CN118215879A

CN118215879A - Display device and light source device thereof

Info

Publication number: CN118215879A
Application number: CN202380014100.7A
Authority: CN
Inventors: 金兑姸; 金成烈; 金亨锡; 朴天淳; 李英敏; 张赫峻
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2022-03-29
Filing date: 2023-01-11
Publication date: 2024-06-18

Abstract

A display device, comprising: a liquid crystal panel; a plurality of light sources emitting light; and a substrate including a plurality of dimming blocks arranged along rows and columns, wherein each of the plurality of dimming blocks includes at least four light sources among the plurality of light sources, and the at least four light sources are connected in series with each other and arranged on a first surface of the substrate along the rows and columns, the substrate includes a plurality of holes extending from the first surface of the substrate to a second surface of the substrate, the first surface of the substrate and the second surface of the substrate are electrically connected to each other through the plurality of holes, and each of the plurality of holes is disposed in a region surrounded by the at least four light sources included in each of the plurality of dimming blocks.

Description

Display device and light source device thereof

Technical Field

The present disclosure relates to a display device and a light source device thereof, and more particularly, to a display device configured to perform local dimming and a light source device thereof.

Background

In general, a display device is an output device that converts acquired or stored electric information into visual information and displays the visual information to a user, and is used in various fields such as home or workplace.

The display device includes a monitor device connected to a personal computer or a server computer, a portable computer apparatus, a navigation terminal device, a general-purpose television apparatus, an Internet Protocol Television (IPTV), a portable terminal device (e.g., a smart phone, a tablet computer, a Personal Digital Assistant (PDA), or a cellular phone), various display devices for reproducing images (e.g., advertisements or movies in the industrial field), or various audio/video systems.

The display device (self-luminous display or non-self-luminous display) includes a light source device that converts electrical information into visual information, and the light source device includes a plurality of light sources configured to independently emit light. The light source may include a Light Emitting Diode (LED) or an Organic Light Emitting Diode (OLED).

In particular, the local dimming technique is applied to a light source device (backlight unit) of a non-self-luminous display to improve contrast of an image. The plurality of light sources are divided into a plurality of dimming blocks, and the driving device may control a driving current supplied to the light sources included in the one or more dimming blocks.

The driving device and the light source (e.g., light emitting diode) may be fixed on the substrate using Surface Mount Technology (SMT). The substrate on which the driving device and the light source are to be mounted may be fixed to an SMT apparatus (e.g., a chip mounter). In addition, a hole may be formed in the substrate, into which a carrier jig for fixing the substrate to the SMT device is inserted.

These holes may interfere with the formation of conductive lines for supplying drive current from the drive device to the light source.

Disclosure of Invention

Technical problem

Provided are a display device and a light source device thereof capable of allowing holes for fixing a substrate to a Surface Mount Technology (SMT) device to be arranged at positions where interference with conductive lines formed on the substrate is minimized.

In addition, a display device and a light source device thereof are provided, which are capable of electrically connecting a first surface and a second surface of a substrate by using a hole provided to fix the substrate to an SMT device.

Technical proposal

According to an aspect of the present disclosure, a display device includes: a liquid crystal panel; a plurality of light sources configured to emit light; and a substrate including a plurality of dimming blocks arranged along rows and columns, wherein each of the plurality of dimming blocks includes at least four light sources among the plurality of light sources, and the at least four light sources are connected in series with each other and arranged on a first surface of the substrate along the rows and columns, the substrate includes a plurality of holes extending from the first surface of the substrate to a second surface of the substrate, the first surface of the substrate and the second surface of the substrate are electrically connected through the plurality of holes, and each of the plurality of holes is in a region surrounded by the at least four light sources of each respective dimming block of the plurality of dimming blocks.

The display device may further include a conductive line on the first surface of the substrate, wherein the conductive line passes between a first dimming block among the plurality of dimming blocks and a second dimming block among the plurality of dimming blocks.

The display device may further include conductive lines disposed on the substrate and connecting at least four light sources of each respective one of the plurality of dimming blocks in series, wherein each of the plurality of holes is disposed between the conductive lines.

Each of the plurality of dimming blocks may include nine light sources arranged in three rows and three columns, and the conductive wire connects the nine light sources in series in a letter "S" shape or a number "2" shape.

The display device may further include: a first driving device configured to control driving currents supplied to at least four light sources in a first group of dimming blocks among the plurality of dimming blocks; and a second driving device configured to control driving currents supplied to at least four light sources in a second group of dimming blocks among the plurality of dimming blocks, wherein the first group of dimming blocks, the second group of dimming blocks, the first driving device, and the second driving device are disposed on the first surface of the substrate.

The display apparatus may further include a first wire disposed on the first surface of the substrate, wherein the first group of dimming blocks and the second group of dimming blocks are arranged along a straight line, the first wire extends from the first driving device to each of the first group of dimming blocks, and the first wire is between the first group of dimming blocks and the second group of dimming blocks.

The display apparatus may further include a second wire configured to transmit the dimming signal to the first driving device, wherein the second wire is disposed between the first and second sets of dimming blocks on the first surface of the substrate.

The display apparatus may further include a first wire disposed on the first surface of the substrate, wherein the first group of dimming blocks is arranged along a plurality of rows and a plurality of columns, the first wire extends from the first driving device to each of the dimming blocks of the first group of dimming blocks, and the first wire is between the first group of dimming blocks arranged along the plurality of rows and the plurality of columns.

The first driving device may be between the first group of dimming blocks and the second driving device may be between the second group of dimming blocks.

The relative position of the first driving device in the first set of dimming blocks may be different from the relative position of the second driving device in the second set of dimming blocks.

Each of the first driving device and the second driving device may include: a first transistor including a control terminal; a capacitor connected to a control terminal of the first transistor; and a second transistor connected to the control terminal of the first transistor.

The display device may further include a ground plate disposed on the second surface of the substrate and electrically connected to the plurality of holes.

Each of the plurality of light sources may include: a light emitting diode disposed on the substrate in a Chip On Board (COB) method; and an optical dome including a cross section having an arc shape or a semicircular shape.

The intensity of a first light beam emitted from a respective light source of the plurality of light sources in a first direction perpendicular to the substrate is less than the intensity of a second light beam emitted from a respective light source of the plurality of light sources in a second direction different from the first direction.

According to an aspect of the present disclosure, a display device includes: a liquid crystal panel; a plurality of light sources configured to emit light; a substrate comprising a plurality of holes electrically connecting a first surface of the substrate to a second surface of the substrate; a plurality of dimming blocks disposed on the first surface of the substrate and arranged along the rows and columns, wherein each of the plurality of dimming blocks includes a plurality of first light sources among the plurality of light sources, the plurality of first light sources of each of the plurality of dimming blocks are arranged on the first surface of the substrate along the rows and columns, and each of the plurality of holes is in an area surrounded by at least four light sources of each of the respective ones of the plurality of dimming blocks.

As is apparent from the description, the display device and the light source device thereof may allow holes for fixing a substrate to a Surface Mount Technology (SMT) apparatus to be provided at positions where interference with conductive lines formed on the substrate is minimized.

Further, the display device and its light source device may electrically connect the first surface of the substrate with the second surface of the substrate by using holes provided to fix the substrate to a Surface Mount Technology (SMT) apparatus.

Drawings

Fig. 1 illustrates an example of an appearance of a display device according to an embodiment of the present disclosure;

fig. 2 illustrates an example of a structure of a display device according to an embodiment of the present disclosure;

fig. 3 illustrates an example of a liquid crystal panel included in a display device according to an embodiment of the present disclosure;

Fig. 4 illustrates an example of a light source device included in a display device according to an embodiment of the present disclosure;

fig. 5 illustrates an example of a light source included in a light source device according to an embodiment of the present disclosure;

Fig. 6 shows an example of a configuration of a display device according to an embodiment of the present disclosure;

Fig. 7 illustrates an example of a dimming block of a light source device included in a display device according to an embodiment of the present disclosure;

fig. 8 is a diagram illustrating an example in which a display device converts image data into dimming data according to an embodiment;

fig. 9 illustrates an example of a dimming driver and a light source device included in a display device according to an embodiment of the present disclosure;

fig. 10 illustrates an example of a driving device included in a display apparatus according to an embodiment of the present disclosure;

Fig. 11 illustrates an example of a dimming driver and a light source device included in a display device according to an embodiment of the present disclosure;

fig. 12 illustrates an example of a driving device included in a display apparatus according to an embodiment of the present disclosure;

fig. 13 illustrates an example of a dimming driver and a light source device included in a display device according to an embodiment of the present disclosure;

fig. 14 illustrates an example of a driving device included in a display apparatus according to an embodiment of the present disclosure;

fig. 15 illustrates an example of a dimming driver and a light source device included in a display device according to an embodiment of the present disclosure;

Fig. 16 illustrates an example of a dimming driver and a light source device included in a display device according to an embodiment of the present disclosure;

Fig. 17 illustrates an example of a first surface of a substrate included in a display device according to an embodiment of the present disclosure;

FIG. 18 illustrates a portion of the substrate shown in FIG. 17;

fig. 19 illustrates an example of a second surface of a substrate included in a display device according to an embodiment of the present disclosure;

FIG. 20 is a cross-sectional view taken in the direction A-A' of FIG. 17;

fig. 21 illustrates an example of a first surface of a substrate included in a display device according to an embodiment of the present disclosure; and

Fig. 22 shows a portion of the substrate shown in fig. 21.

Detailed Description

In the following description, like reference numerals refer to like elements throughout the specification. Well-known functions or constructions are not described in detail since they would obscure one or more exemplary embodiments with unnecessary detail. Terms such as "unit," "module," "member" and "block" can be implemented in hardware or software. According to embodiments, a plurality of "units", "modules", "means" and "blocks" may be implemented as a single component, or a single "unit", "module", "means" and "block" may include a plurality of components.

It will be understood that when an element is referred to as being "connected" to or "connected" to another element, it can be directly or indirectly connected to the other element, with indirect connection including connection via a wireless communication network.

Also, when a component "comprises" or "comprising" an element, unless specifically stated to the contrary, the component may also include other elements without excluding other elements.

Throughout the description, when an element is "on" another element, this includes not only the case where the element is in contact with the other element, but also the case where there is another element between the two elements.

It will be understood that, although the terms "first," "second," "third," etc. may be used herein to describe various elements, this disclosure should not be limited by these terms. These terms are only used to distinguish one element from another element.

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

The identification code is used for convenience of description, but is not intended to illustrate the order of each step. Each step may be implemented in a different order than shown unless the context clearly indicates otherwise.

Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

Fig. 1 illustrates an example of an appearance of a display device according to an embodiment of the present disclosure.

The display device 10 is a device that processes an image signal received from an external source and visually displays the processed image. The display device 10 is a television, but the present disclosure is not limited thereto. For example, the display apparatus 10 may be implemented in various forms such as a monitor, a portable multimedia device, and a portable communication device, and the shape of the display apparatus 10 is not limited as long as an image can be visually displayed.

The display device 10 may be a large screen display (LFD) installed outdoors (e.g., on a roof of a building or at a bus stop). The term "outdoor" is not limited to the outside of a building, even indoors (e.g., subway station, mall, movie theater, company, store, etc.), as long as the display device is accessed by a large number of people, and thus the display device 10 according to the embodiment may be installed anywhere.

The display apparatus 10 may receive content data including video data and audio data from various content sources and output video and audio corresponding to the video data and the audio data. For example, the display apparatus 10 may receive content data through a broadcast receiving antenna or cable, receive content data from a content playback device, or receive content data from a content providing server of a content provider.

As shown in fig. 1, the display device 10 includes a main body 11 and a screen 12 for displaying an image I.

The main body 11 may form an external appearance of the display apparatus 10, and the main body 11 may include components configured to allow the display apparatus 10 to display an image I and perform various functions. Although the body 11 shown in fig. 1 is in the form of a flat plate, the shape of the body 11 is not limited thereto. For example, the body 11 may have a curved plate shape.

The screen 12 may be formed on the front surface of the main body 11 and display the image I. For example, the screen 12 may display a still image or a moving image. Further, the screen 12 may display a two-dimensional plane image or a three-dimensional image using binocular parallax of the user.

The screen 12 may include a self-light emitting display (e.g., a light emitting diode panel or an organic light emitting diode panel) configured to directly emit light, or a non-self-light emitting display (e.g., a liquid crystal panel) configured to transmit or block light emitted from a light source device (e.g., a backlight unit).

A plurality of pixels P may be formed on the screen 12, and the image I displayed on the screen 12 may be formed by a combination of light emitted from the plurality of pixels P. For example, the image I may be formed on the screen 12 by combining light emitted from the plurality of pixels P into a mosaic.

Each of the plurality of pixels P may emit light of different brightness and different color. In order to emit light of various colors, the plurality of pixels P may include sub-pixels PR, PG, and PB, respectively.

The sub-pixels PR, PG, and PB may include a red sub-pixel PR emitting red light, a green sub-pixel PG emitting green light, and a blue sub-pixel PB emitting blue light. For example, red light may represent a light beam having a wavelength of approximately 620nm (nanometers, parts per billion meters) to 750nm, green light may represent a light beam having a wavelength of approximately 495nm to 570nm, and blue light may represent a light beam having a wavelength of approximately 450nm to 495 nm.

By combining the red light of the red subpixel PR, the green light of the green subpixel PG, and the blue light of the blue subpixel PB, each of the plurality of pixels P may emit light of different brightness and different color.

Fig. 2 illustrates an example of a structure of a display device according to an embodiment of the present disclosure. Fig. 3 illustrates an example of a liquid crystal panel included in a display device according to an embodiment of the present disclosure.

As shown in fig. 2, various components configured to generate an image I on the screen 12 may be provided inside the main body 11.

For example, the main body 11 may include a light source device 100 as a surface light source, a liquid crystal panel 20 configured to block or transmit light emitted from the light source device 100, a control assembly 50 configured to control operations of the light source device 100 and the liquid crystal panel 20, and a power assembly 60 configured to supply power to the light source device 100 and the liquid crystal panel 20. Further, the main body 11 may include a bezel 13, a frame middle mold 14, a bottom chassis 15, and a rear cover 16, which are provided to support and fix the liquid crystal panel 20, the light source device 100, the control assembly 50, and the power assembly 60.

The light source device 100 may include a point light source configured to emit monochromatic light or white light. The light source device 100 may refract, reflect, and scatter light emitted from the point light source, thereby converting the light emitted from the point light source into surface light. As described above, the light source device 100 may refract, reflect, and scatter light emitted from the point light source, thereby emitting uniform surface light toward the front.

The configuration of the light source device 100 will be described in more detail below.

The liquid crystal panel 20 is disposed in front of the light source device 100, and blocks or transmits light emitted from the light source device 100 to form an image I.

The front surface of the liquid crystal panel 20 may form the screen 12 of the display device 10 described above, and the liquid crystal panel 20 may form a plurality of pixels P. In the liquid crystal panel 20, the plurality of pixels P may independently block or transmit light from the light source device 100. The light transmitted through the plurality of pixels P may form an image I displayed on the screen 12.

For example, as shown in fig. 3, the liquid crystal panel 20 may include a first polarizing film 21, a first transparent substrate 22, a pixel electrode 23, a thin film transistor 24, a liquid crystal layer 25, a common electrode 26, a color filter 27, a second transparent substrate 28, and a second polarizing film 29.

The first transparent substrate 22 and the second transparent substrate 28 may fixedly support the pixel electrode 23, the thin film transistor 24, the liquid crystal layer 25, the common electrode 26, and the color filter 27. The first transparent substrate 22 and the second transparent substrate 28 may be formed of tempered glass or transparent resin.

The first polarizing film 21 and the second polarizing film 29 are disposed outside the first transparent substrate 22 and the second transparent substrate 28. Each of the first polarizing film 21 and the second polarizing film 29 may transmit a specific light beam and block (reflect or absorb) other light beams. For example, the first polarizing film 21 may transmit a light beam in the first direction and block (reflect or absorb) other light beams. In addition, the second polarizing film 29 may transmit the light beam in the second direction and block (reflect or absorb) other light beams. In this case, the first direction and the second direction may be perpendicular to each other. Accordingly, polarized light passing through the first polarizing film 21 does not pass through the second polarizing film 29.

The color filter 27 may be disposed inside the second transparent substrate 28. The color filters 27 may include a red color filter 27R transmitting red light, a green color filter 27G transmitting green light, and a blue color filter 27B transmitting blue light. The red color filter 27R, the green color filter 27G, and the blue color filter 27B may be disposed in parallel with each other. The region where the color filter 27 is formed corresponds to the above-described pixel P. The region where the red color filter 27R is formed corresponds to the red sub-pixel PR, the region where the green color filter 27G is formed corresponds to the green sub-pixel PG, and the region where the blue color filter 27B is formed corresponds to the blue sub-pixel PB.

The pixel electrode 23 may be disposed inside the first transparent substrate 22, and the common electrode 26 may be disposed inside the second transparent substrate 28. The pixel electrode 23 and the common electrode 26 may be formed of a conductive metal material, and the pixel electrode 23 and the common electrode 26 may generate an electric field to change the arrangement of the liquid crystal molecules 25a forming the liquid crystal layer 25, as described below.

A Thin Film Transistor (TFT) 24 is disposed inside the first transparent substrate 22. The TFT 24 may transmit or block a current flowing through the pixel electrode 23. For example, in response to turning on (off) or turning off (on) of the TFT 24, an electric field may be formed or removed between the pixel electrode 23 and the common electrode 26.

The liquid crystal layer 25 is formed between the pixel electrode 23 and the common electrode 26, and the liquid crystal layer 25 is filled with liquid crystal molecules 25a. Liquid crystals represent an intermediate state between solid (crystalline) and liquid. The liquid crystal also exhibits optical characteristics according to a change in an electric field. For example, in the liquid crystal, the orientation of molecules forming the liquid crystal may be changed according to a change in an electric field. As a result, the optical characteristics of the liquid crystal layer 25 may vary depending on the presence or absence of an electric field across the liquid crystal layer 25.

A cable 20a configured to transmit image data to the liquid crystal panel 20 and a display driver integrated circuit (DDI) (hereinafter referred to as a "panel driver") 30 configured to process digital image data and output analog image signals are provided at one side of the liquid crystal panel 20.

The cable 20a may electrically connect the control assembly 50 and the power assembly 60 to the panel driver 30, and may also electrically connect the panel driver 30 to the liquid crystal panel 20. The cable 20a may include a flexible flat cable or a flexible film cable.

The panel driver 30 may receive image data and power from the control assembly 50 and the power assembly 60 through the cable 20 a. The panel driver 30 may transmit image data and driving current to the liquid crystal panel 20 through the cable 20 a.

In addition, the cable 20a and the panel driver 30 may be integrally implemented as a film cable, a Chip On Film (COF), or a Tape Carrier Package (TCP). In other words, the panel driver 30 may be disposed on the cable 20 a. However, the present disclosure is not limited thereto, and the panel driver 30 may be disposed on the liquid crystal panel 20.

The control assembly 50 may include a control circuit configured to control the operation of the liquid crystal panel 20 and the light source device 100. For example, the control circuitry may process video signals and/or audio signals from an external content source. The control circuit may transmit the image data to the liquid crystal panel 20 and the dimming data to the light source device 100.

The power assembly 60 may include a power circuit configured to supply power to the liquid crystal panel 20 and the light source device 100. The power circuit may supply power to the light source device 100 to allow the light source device 100 to output a face light. The power circuit may supply power to the liquid crystal panel 20 to allow the liquid crystal panel 20 to block or transmit light of the light source device 100.

The control assembly 50 and the power assembly 60 may be implemented as a printed circuit board and various circuits mounted on the printed circuit board. For example, the power circuit may include a capacitor, a coil, a resistive element, a processor, and a power circuit board on which the capacitor, the coil, the resistive element, and the processor are mounted. Further, the control circuit may include a memory, a processor, and a control circuit board mounted with the memory and the processor.

Fig. 4 illustrates an example of a light source device included in a display device according to an embodiment of the present disclosure. Fig. 5 illustrates an example of a light source included in a light source device according to an embodiment of the present disclosure.

As shown in fig. 4, the light source device 100 may include: a light source module 110 configured to generate light; a reflection sheet 120 configured to reflect light; a diffusion plate 130 configured to uniformly diffuse light; and an optical sheet 140 configured to increase brightness of the emitted light.

The light source module 110 may include: a plurality of light sources 111 configured to emit light; and a substrate 112 configured to support/fix the plurality of light sources 111.

The plurality of light sources 111 may be arranged in a predetermined pattern to allow light to be emitted at a uniform brightness. The plurality of light sources 111 may be disposed such that the distance between one light source and the light source adjacent thereto is the same.

For example, as shown in fig. 4, a plurality of light sources 111 may be arranged along rows and columns. Accordingly, the plurality of light sources may be arranged such that an approximate square is formed by four adjacent light sources. In addition, any one of the light sources may be disposed adjacent to the four light sources, and the distances between one light source and the four adjacent light sources may be approximately the same.

Alternatively, the plurality of light sources may be arranged such that three adjacent light sources form an approximately equilateral triangle. In this case, one light source may be disposed adjacent to six light sources, and the distances between one light source and six adjacent light sources may be approximately the same.

However, the pattern in which the plurality of light sources 111 are arranged is not limited to the above-described pattern, and the plurality of light sources 111 may be arranged in various patterns to allow light to be emitted at uniform brightness.

The light source 111 may employ an element configured to emit monochromatic light (light of a specific wavelength, or light of a single peak wavelength, such as blue light) or white light (light of a plurality of peak wavelengths, such as mixed light of red light, green light, and blue light) in various directions by receiving electric power.

Each of the plurality of light sources 111 may include a Light Emitting Diode (LED) 190 and an optical dome 180.

In order to reduce the thickness of the display device 10, it is necessary to reduce the thickness of the light source device 100. The thickness of the plurality of light sources 111 needs to be reduced to reduce the thickness of the light source device 100, thereby simplifying the structure thereof.

The LED 190 may be directly attached to the substrate 112 in a Chip On Board (COB) method. In other words, the light source 111 may comprise the LED 190, wherein the light emitting diode chip or die is directly attached to the substrate 112 without additional packaging.

The LED 190 may be fabricated as a flip-chip type LED. For the flip-chip type LED 190, when a light emitting diode corresponding to a semiconductor element is adhered to the substrate 112, an electrode pattern of the semiconductor element may be soldered to the substrate 112 as it is without using an intermediate medium such as a metal lead (wiring) or a Ball Grid Array (BGA). Accordingly, since the metal wire (wiring) or the ball grid array is omitted, the size of the light source 111 including the flip-chip LED 190 can be reduced.

In the above description, the flip-chip type LED 190 directly fused to the substrate 112 in the chip-on-board method is described, but the light source 111 is not limited to the flip-chip type LED. Alternatively, the light source 111 may include a packaged LED.

The optical dome 180 may cover the LED 190. The optical dome 180 may prevent or inhibit damage to the LED 190 caused by external mechanical action and/or damage to the LED 190 caused by chemical action.

The optical dome 180 may have a dome shape formed in such a manner that the sphere is cut to a surface excluding the center thereof, or may have a hemispherical shape formed in such a manner that the sphere is cut to a surface including the center thereof. The vertical cross-section of the optical dome 180 may be an arc shape or a semicircular shape.

The optical dome 180 may be formed of silicon or epoxy. For example, molten silicon or epoxy may be discharged through a nozzle onto the LED 190, and the discharged silicon or epoxy may be cured, thereby forming the optical dome 180.

Accordingly, the shape of the optical dome 180 may vary depending on the viscosity of the liquid silicon or epoxy. For example, in a state where the optical dome 180 is manufactured using silicon having a thixotropic index of about 2.7 to 3.3 (suitably 3.0), the optical dome 180 may include a dome ratio of approximately 0.25 to 0.31 (suitably 0.28) indicating a ratio of a height of the dome to a diameter of a bottom of the dome (height of the dome/diameter of the bottom).

The optical dome 180 may be optically transparent or translucent. Light emitted from the LED 190 may be emitted to the outside through the optical dome 180.

In this case, the dome-shaped optical dome 180 may refract light like a lens. For example, light emitted from the LED 190 may be refracted by the optical dome 180 and thus may be dispersed.

As described above, the optical dome 180 may disperse light emitted from the LED 190 and protect the LED 190 from external mechanical and/or chemical or electrical effects.

In the above description, although the optical dome 180 in the form of a silicon dome is described, the light source 111 is not limited to include the optical dome 180. Alternatively, the light source 111 may include a lens for dispersing light emitted from the LED.

The substrate 112 may fix the plurality of light sources 111 to prevent a change in the position of the light sources 111. Further, the substrate 112 may provide the light source 111 with power for the light source 111 to emit light.

The substrate 112 may fix a plurality of light sources 111. The substrate 112 may be provided by a Printed Circuit Board (PCB) or synthetic resin or tempered glass on which conductive power lines for supplying power to the light source 111 are formed.

The reflective sheet 120 may reflect light emitted from the plurality of light sources 111 to a front side or a direction near the front side.

In the reflection sheet 120, a plurality of through holes 120a are formed at positions corresponding to each of the plurality of light sources 111 of the light source module 110. In addition, the light source 111 of the light source module 110 may pass through the through hole 120a and protrude to the front of the reflection sheet 120. Accordingly, the plurality of light sources 111 may emit light in front of the reflective sheet 120. The reflective sheet 120 may reflect light emitted from the plurality of light sources 111 toward the reflective sheet 120 toward the diffusion plate 130.

The diffusion plate 130 may be disposed in front of the light source module 110 and the reflection sheet 120, and may uniformly distribute light emitted from the light source 111 of the light source module 110.

As described above, the plurality of light sources 111 are disposed at equal intervals on the rear surface of the light source device 100, and thus luminance unevenness may occur according to the positions of the plurality of light sources 111.

Within the diffusion plate 130, the diffusion plate 130 may diffuse light emitted from the plurality of light sources 111 to eliminate luminance unevenness caused by the plurality of light sources 111. In other words, the diffusion plate 130 may uniformly emit the non-uniform light of the plurality of light sources 111 to the front surface.

The optical sheet 140 may include various sheets for improving brightness and brightness uniformity. For example, the optical sheet 140 may include a light conversion sheet 141, a diffusion sheet 142, a prism sheet 143, and a reflective polarizer 144.

The sheet or film included in the optical sheet 140 is not limited to the sheet or film shown in fig. 4, and the optical sheet 140 may include more kinds of sheets, such as a protective sheet or film.

Fig. 6 shows an example of a configuration of a display device according to an embodiment of the present disclosure. Fig. 7 illustrates an example of a dimming block of a light source device included in a display device according to an embodiment of the present disclosure. Fig. 8 is a diagram illustrating an example in which a display device converts image data into dimming data according to an embodiment.

As shown in fig. 6, the display apparatus 10 may include a content receiver 80, an image processor 90, a panel driver 30, a liquid crystal panel 20, a dimming driver 170, and a light source apparatus 100.

The content receiver 80 may include: a receiving terminal 81 arranged to receive content including video signals and/or audio signals from a content source; and a tuner 82.

The receiving terminal 81 may receive video signals and audio signals from a content source through a cable. For example, the reception terminal 81 may include a component (YPbPr/RGB) terminal, a composite (composite video blanking and synchronization, CVBS) terminal, an audio terminal, a High Definition Multimedia Interface (HDMI) terminal, and a Universal Serial Bus (USB) terminal.

The tuner 82 may receive a broadcast signal from a broadcast receiving antenna or a cable. The tuner 82 may extract a broadcast signal of a channel selected by the user from among broadcast signals. For example, among a plurality of broadcast signals received through a broadcast receiving antenna or a cable, the tuner 82 may transmit a broadcast signal having a frequency corresponding to a channel selected by a user and may block broadcast signals having other frequencies.

As described above, the content receiver 80 may receive video signals and audio signals from a content source through the receiving terminal 81 and/or the tuner 82. The content receiver 80 may output the video signal and/or the audio signal received through the receiving terminal 81 and/or the tuner 82 to the image processor 90.

The image processor 90 includes: a processor 91 configured to process image data; and a memory 92 configured to memorize/store a program and data for processing image data.

The memory 92 may store programs and data for processing video signals and/or audio signals. The memory 92 may temporarily store data generated in the processing of the video signal and/or the audio signal.

The memory 92 may include non-volatile memory (e.g., read-only memory (ROM) and flash memory) and volatile memory (e.g., static random access memory (S-RAM) and dynamic random access memory (D-RAM)).

The processor 91 may receive video signals and/or audio signals from the content receiver 80. The processor 91 may decode the video signal into image data. The processor 91 may generate dimming data from the image data. In addition, the processor 91 may output the image data and the dimming data to the panel driver 30 and the dimming driver 170, respectively.

The image processor 90 may generate image data and dimming data based on the video signal obtained by the content receiver 80. Further, the image processor 90 may transmit the image data and the dimming data to the liquid crystal panel 20 and the light source device 100, respectively.

The image data may include information about the intensity of light transmitted by a plurality of pixels (or a plurality of sub-pixels) included in the liquid crystal panel 20. The image data may be supplied to the liquid crystal panel 20 through the panel driver 30.

The liquid crystal panel 20 includes a plurality of pixels configured to transmit or block light, and the plurality of pixels are arranged in a matrix form. In other words, the plurality of pixels may be arranged along a plurality of rows and a plurality of columns.

The panel driver 30 may receive image data from the image processor 90. The panel driver 30 may drive the liquid crystal panel 20 according to the image data. In other words, the panel driver 30 may convert image data (hereinafter referred to as "digital image data") as a digital signal into an analog image signal as an analog voltage signal. The panel driver 30 may supply an analog image signal to the liquid crystal panel 20. The light characteristics (e.g., light transmittance) of a plurality of pixels included in the liquid crystal panel 20 may vary according to the analog image signal.

The panel driver 30 may include a timing controller, a data driver, and a scan driver.

The timing controller may receive image data from the image processor 90. The timing controller may output the image data and the driving control signal to the data driver and the scan driver. The driving control signals may include a scan control signal and a data control signal. The scan control signal and the data control signal may be used to control the operation of the scan driver and the operation of the data driver, respectively.

The scan driver may receive a scan control signal from the timing controller. In response to the scan control signal, the scan driver may activate an input of any one of the plurality of lines in the liquid crystal panel 20. In other words, the scan driver may convert pixels included in one row among a plurality of pixels arranged along a plurality of rows and a plurality of columns into a state capable of receiving an analog image signal. In this case, other pixels (pixels other than the pixels activated by the scan driver) may not receive the analog image signal.

The data driver may receive image data and a data control signal from the timing controller. The data driver may output image data on the liquid crystal panel 20 in response to the data control signal. For example, the data driver may receive digital image data from the timing controller. The data driver may convert digital image data into analog image signals. In addition, the data driver may supply analog image signals to pixels included in one row and input-activated by the scan driver. At this time, the pixels activated by the scan driver may receive analog image signals. The optical characteristics (e.g., light transmittance) of the input activated pixels may vary according to the received analog image signal.

As described above, the panel driver 30 may drive the liquid crystal panel 20 according to the image data. Accordingly, an image corresponding to the image data may be displayed on the liquid crystal panel 20.

In addition, the dimming data may include information about the intensity of light emitted from a plurality of light sources (or a plurality of dimming blocks) included in the light source device 100. Dimming data may be provided to the light source device 100 through the dimming driver 170.

The light source device 100 may include a plurality of light sources 111 configured to emit light. The plurality of light sources 111 are arranged in a matrix form. In other words, the plurality of light sources 111 may be arranged along a plurality of rows and a plurality of columns.

The light source device 100 may be divided into a plurality of dimming blocks 200. In addition, each of the plurality of dimming blocks 200 may include at least one light source.

The light source device 100 may diffuse light emitted from the plurality of light sources 111, thereby outputting surface light. The liquid crystal panel 20 may include a plurality of pixels, and the plurality of pixels may be controlled to allow the plurality of pixels to transmit or block light. An image may be formed from light passing through each of the plurality of pixels.

At this time, in order to darken a dark portion of an image, the light source device 100 may turn on/off a plurality of light sources corresponding to the dark portion of the image. Accordingly, since a dark portion of the image is darkened, the contrast of the image can be improved.

As described above, the operation of the light source device 100 controlling the plurality of light sources 111 to allow the plurality of light sources 111 to emit light in the region corresponding to the bright portion of the image and to allow the plurality of light sources 111 not to emit light in the region corresponding to the dark portion of the image is hereinafter referred to as "local dimming".

For the local dimming, the plurality of light sources 111 included in the light source device 100 may be divided into a plurality of dimming blocks 200, as shown in fig. 7. Fig. 7 shows eight rows and ten columns for a total of 80 dimming blocks, but the number and arrangement of the dimming blocks are not limited to those shown in fig. 7.

Each of the plurality of dimming blocks 200 may include at least one light source 111. The light source device 100 may supply the same driving current to the light sources 111 included in the same dimming block 200, and the light sources 111 included in the same dimming block 200 may emit light of the same brightness. For example, the light sources 111 included in the same dimming block 200 may be connected in series with each other, and thus, the same driving current may be supplied to the light sources 111 included in the same dimming block 200.

In addition, the light source apparatus 100 may further include a driving circuit configured to control a driving current supplied to the light source 111 included in each of the plurality of dimming blocks 200. Each driving circuit may be provided to correspond to the dimming block 200. In other words, each driving circuit may drive the dimming block 200.

As described above, since the light sources 111 included in the dimming block 200 are connected in series with each other, the light sources 111 included in the dimming block 200 may be integrally operated and integrally formed.

Hereinafter, "supplying a driving current to the dimming block" may mean the same meaning as "supplying a driving current to a light source included in the dimming block".

Fig. 7 shows dimming blocks 200 each including nine light sources 111, but the number and arrangement of the light sources 111 included in each dimming block 200 are not limited to those shown in fig. 7.

As described above, the image processor 90 may provide the light source device 100 with dimming data for local dimming. The dimming data may include information about the brightness of each of the plurality of dimming blocks 200. For example, the dimming data may include information about the intensity of light output by the light source 111 included in each of the plurality of dimming blocks 200.

The image processor 90 may obtain dimming data from the image data.

The image processor 90 may convert the image data into dimming data in various ways. For example, as shown in fig. 8, the image processor 90 may divide the image I into a plurality of image blocks IB based on the image data. The number of the plurality of image blocks IB may be the same as the number of the plurality of dimming blocks 200, and each of the plurality of image blocks IB may correspond to each of the plurality of dimming blocks 200.

The image processor 90 may obtain the luminance values L of the plurality of dimming blocks 200 from the image data of the plurality of image blocks IB. In addition, the image processor 90 may generate dimming data by combining the luminance values L of the plurality of dimming blocks 200.

For example, the image processor 90 may obtain the luminance value L of each of the plurality of dimming blocks 200 based on the maximum value of the luminance values of the pixels included in each image block IB.

One image block may include a plurality of pixels, and image data of one image block may include image data of a plurality of pixels (e.g., red data, green data, blue data, etc.). The image processor 90 may calculate a luminance value of each pixel based on the image data of each pixel.

The image processor 90 may determine the maximum value among the luminance values of each pixel included in the image block as the luminance value of the dimming block corresponding to the image block. For example, the image processor 90 may determine the maximum value among the luminance values of each pixel included in the i-th image block IB (i) as the luminance value L (i) of the i-th dimming block, and the maximum value among the luminance values of each pixel included in the j-th image block IB (j) as the luminance value L (j) of the j-th dimming block.

The image processor 90 may generate dimming data by combining the luminance values of the plurality of dimming blocks 200.

Dimming driver 170 may receive dimming data from image processor 90. The dimming driver 170 may drive the light source device 100 according to the dimming data. The dimming data may include information about the brightness of each of the plurality of dimming blocks 200 or information about the brightness of the light source 111 included in the plurality of dimming blocks 200.

The dimming driver 170 may convert dimming data, which is a digital voltage signal, into an analog driving current.

In the active matrix driving method, the dimming driver 170 may sequentially supply an analog dimming signal to a driving circuit corresponding to the dimming block 200.

The plurality of dimming blocks 200 may be divided into a plurality of groups. The driving currents may be simultaneously supplied to the dimming blocks included in the same group, and the driving currents may be sequentially supplied to the dimming blocks included in different groups at different times. The dimming driver 170 may activate the dimming block 200 included in one of the groups and may provide an analog dimming signal to the activated dimming block. The dimming driver 170 may activate the dimming blocks 200 included in another group and may provide an analog dimming signal to the activated dimming blocks.

For example, dimming blocks 200 located in the same row may belong to the same group, and dimming blocks 200 located in different rows may belong to different groups. The dimming driver 170 may activate the dimming blocks 200 included in any one row and provide an analog dimming signal to the activated dimming blocks. Thereafter, the dimming driver 170 may activate the input of the dimming block 200 included in another row and provide an analog dimming signal to the dimming block 200 whose input is activated.

The driving circuit of each dimming block 200 may provide an analog driving current corresponding to the analog dimming signal to the light source module 110. The light source 111 included in the light source module 110 may emit light by simulating a driving current. The light sources 111 included in the same dimming block 200 may emit light of the same intensity according to the dimming data. In addition, the light sources 111 included in the different dimming blocks 200 may emit light of different intensities according to the dimming data.

The case where the dimming driver 170 sequentially supplies the analog dimming signal to the plurality of dimming blocks 200 in the active matrix method will be described in more detail.

Fig. 9 illustrates an example of a dimming driver and a light source device included in a display device according to an embodiment of the present disclosure. Fig. 10 illustrates an example of a driving device included in a display apparatus according to an embodiment of the present disclosure.

Referring to fig. 9 and 10, the display apparatus 10 includes a dimming driver 170, a plurality of driving devices 300 (i.e., driving devices 310, 320, 330, 340, 350, 360, 370, 380, and 390), and a plurality of light sources 111.

Each of the plurality of light sources 111 may include a light emitting diode, and may be divided into a plurality of dimming blocks 200 (i.e., dimming blocks 210, 220, 230, 240, 250, 260, 270, 280, and 290). For example, the light sources 111 included in the same dimming block 200 may be connected in series with each other and supplied with the same driving current.

The plurality of driving devices 300 may receive the analog dimming signal from the dimming driver 170 and supply driving currents to the plurality of light sources 111 in response to the received analog dimming signal.

As shown in fig. 10, a plurality of light sources 111 included in one dimming block 200 may receive current from the same driving device 300. For example, the plurality of light sources 111 included in the first dimming block 210 may receive driving currents from the first driving device 310. The plurality of light sources 111 included in the second dimming block 220 may receive a driving current from the second driving device 320. The plurality of light sources 111 included in the third dimming block 230 may receive a driving current from the third driving device 330. In the same manner, the plurality of light sources 111 included in the nth dimming blocks 240, 250, 260, 270, 280 and 290 may receive driving currents from the nth driving devices 340, 350, 360, 370, 380 and 390.

When the input is activated by the dimming driver 170, the driving device 300 may receive an analog dimming signal from the dimming driver 170 and store the received analog dimming signal. When the input is deactivated, the plurality of driving devices 300 may supply driving currents corresponding to the pre-stored analog dimming signals to the plurality of light sources 111.

A plurality of scan lines S1, S2, and S3 configured to supply scan signals from the dimming driver 170 to the plurality of driving devices 300, and a plurality of data lines D1, D2, and D3 configured to supply analog dimming signals from the dimming driver 170 to the plurality of driving devices 300 may be provided.

The plurality of dimming blocks 200 may be arranged along a plurality of rows and a plurality of columns. The driving devices 300 corresponding to the dimming blocks 200 included in the same row may share the same scan line. For example, the first, second and third driving devices 310, 320 and 330 may share the first scan line S1, and the fourth, fifth and sixth driving devices 340, 350 and 360 may share the second scan line S2. In addition, the seventh, eighth and ninth driving devices 370, 380 and 390 may share the third scan line S3.

In addition, the driving devices 300 corresponding to the dimming blocks 200 included in the same column may share the same data line. For example, the first driving device 310, the fourth driving device 340, and the seventh driving device 370 may share the first data line D1. The second driving device 320, the fifth driving device 350, and the eighth driving device 380 may share the second data line D2. In addition, the third driving device 330, the sixth driving device 360, and the ninth driving device 390 may share the third data line D3.

The inputs of the plurality of driving devices 300 may be activated by the scan signal of the dimming driver 170, and the driving device 300 whose input is activated may receive the analog dimming signal of the dimming driver 170.

For example, when the dimming driver 170 outputs a scan signal through the first scan line S1, the first, second and third driving devices 310, 320 and 330 may receive an analog dimming signal through the first, second and third data lines D1, D2 and D3, respectively. On the other hand, the other driving devices 340, 350, 360, 370, 380, and 390 do not receive the analog dimming signal.

In addition, when the dimming driver 170 outputs a scan signal through the second scan line S2, the fourth, fifth and sixth driving devices 340, 350 and 360 may receive an analog dimming signal through the first, second and third data lines D1, D2 and D3, respectively. On the other hand, the other driving devices 310, 320, 330, 370, 380, and 390 do not receive the analog dimming signal.

In response to receiving the analog dimming signal, each of the plurality of driving devices 300 may store the received analog dimming signal and supply driving currents to the plurality of light sources according to the stored analog dimming signal.

For example, when the dimming driver 170 outputs a scan signal through the first scan line S1, the fourth driving device 340, the fifth driving device 350, and the sixth driving device 360 may supply driving currents to the plurality of light sources 111 included in each of the fourth dimming block 240, the fifth dimming block 250, and the sixth dimming block 260, respectively.

Further, when the dimming driver 170 outputs a scan signal through the second scan line S2, the first, second and third driving devices 310, 320 and 330 may supply driving currents to the plurality of light sources 111 included in each of the first, second and third dimming blocks 210, 220 and 230, respectively.

By the active matrix driving method, the plurality of driving devices 300 may sequentially receive the analog dimming signal from the dimming driver 170, and the plurality of driving devices 300 may supply the driving current to the plurality of light sources 111 even when the input is deactivated (i.e., in a state in which the plurality of driving devices 300 do not receive the analog dimming signal from the dimming driver 170).

In addition, by performing the active matrix driving method, the number of pins of the dimming driver 170 for providing the analog dimming signal to the plurality of dimming blocks 200 is reduced. In addition, the number of signal lines for supplying the analog dimming signal from the dimming driver 170 to the plurality of dimming blocks 200 is reduced. Accordingly, the number of dimming blocks 200 may be increased without limiting the pin count of the dimming driver 170.

The plurality of driving devices 300 may include circuits of various topologies to implement an active matrix driving method.

For example, as shown in fig. 10, each of the plurality of driving devices 300 may include a capacitive two-transistor (1C 2T) topology.

Each of the plurality of driving devices 300 may include a driving circuit 301, the driving circuit 301 including a driving transistor Tdr, a switching transistor Tsw, and a storage capacitor Cst.

The driving transistor Tdr includes an input terminal 301a, an output terminal 301b, and a control terminal 301c. The input terminal 301a of the driving transistor Tdr may be connected to the power supply Vdd, and the output terminal 301b may be connected to the plurality of light sources 111. The driving transistor Tdr may supply driving current to the plurality of light sources 111 based on the voltage at the control terminal 301c.

The storage capacitor Cst is disposed between the output terminal 301b and the control terminal 301c of the driving transistor Tdr. The storage capacitor Cst may output a constant voltage by storing an input charge. The driving transistor Tdr may supply a driving current to the plurality of light sources 111 based on the voltage output by the storage capacitor Cst.

The switching transistor Tsw further includes an input terminal 301d, an output terminal 301e, and a control terminal 301f. The input terminal 301D of the switching transistor Tsw may be connected to the data line D1 or D2, and the output terminal 301e of the switching transistor Tsw may be connected to the control terminal 301c of the driving transistor Tdr. The control terminal 301f of the switching transistor Tsw may be connected to the scan line S1 or S2.

The switching transistor Tsw may be turned on by a scan signal of the scan line S1, S2, or S3, and may transmit an analog dimming signal of the data line D1, D2, or D3 to the storage capacitor Cst and the driving transistor Tdr. The analog dimming signal of the data line D1, D2, or D3 may be input to the control terminal 301c of the driving transistor Tdr, and the driving transistor Tdr may supply a driving current corresponding to the analog dimming signal to the plurality of light sources 111. The storage capacitor Cst may store charge from the analog dimming signal and output a voltage corresponding to the analog dimming signal.

Thereafter, even when the input of the scan signal is stopped and the switching transistor Tsw is turned off, the storage capacitor Cst may still output a voltage corresponding to the analog dimming signal, and the driving transistor Tdr may still supply a driving current corresponding to the analog dimming signal to the plurality of light sources 111.

The circuit shown in fig. 10 is an example of the driving device 300, but is not limited thereto. For example, the driving device 300 may include a 3T1C topology circuit in which transistors are added to compensate for the body effect of the driving transistor Tdr.

The driving device 300 may be provided as a single chip integrated with the circuit shown in fig. 10. In other words, the circuit shown in fig. 10 may be integrated in a single semiconductor chip.

As described above, each driving device 300 may supply a driving current to the light source 111 included in one dimming block 200. In this case, each driving device 300 may receive a scan signal through one scan line and an analog dimming signal through one data line.

Fig. 11 illustrates an example of a dimming driver and a light source device included in a display device according to an embodiment of the present disclosure. Fig. 12 illustrates an example of a driving device included in a display apparatus according to an embodiment of the present disclosure.

Referring to fig. 11 and 12, the display apparatus 10 includes a dimming driver 170, a plurality of driving devices 400 (i.e., driving devices 410, 420, and 430), and a plurality of light sources 111.

The plurality of driving devices 400 may receive the analog dimming signal from the dimming driver 170 and supply driving currents to the plurality of light sources 111 in response to the received analog dimming signal.

The plurality of light sources 111 may include light emitting diodes, and may be divided into a plurality of dimming blocks 200 (i.e., dimming blocks 210, 220, 230, 240, 250, 260, 270, 280, and 290). For example, the light sources 111 included in the same dimming block 200 may be connected in series with each other and supplied with the same driving current.

As shown in fig. 11, each driving device 400 may supply driving current to the light sources 111 included in the three dimming blocks 200 located in the same row. For example, the first driving device 410 may supply driving currents to the plurality of light sources 111 included in the first, second, and third dimming blocks 210, 220, and 230. The second driving device 420 may supply driving currents to the plurality of light sources 111 included in the fourth, fifth, and sixth dimming blocks 240, 250, and 260. The third driving device 430 may supply driving currents to the plurality of light sources 111 included in the seventh, eighth, and ninth dimming blocks 270, 280, and 290.

The driving device 400 may supply different driving currents to the light sources 111 included in the different dimming blocks 200 according to the analog dimming signal. For example, the first driving device 410 may supply the first driving current to the light source 111 included in the first dimming block 210 according to the analog dimming signal. The second driving device 420 may supply a second driving current to the light source 111 included in the second dimming block 220 according to the analog dimming signal. The third driving device 430 may supply a third driving current to the light sources 111 included in the third dimming block 230 according to the analog dimming signal.

The input of the driving device 400 may be activated by the scan signal of the dimming driver 170. When the input is activated, the driving device 400 may receive an analog dimming signal from the dimming driver 170, store the received analog dimming signal, and supply a driving current corresponding to the received analog dimming signal to the plurality of light sources 111. Further, when the input is deactivated, the driving device 400 may supply a driving current corresponding to the stored analog dimming signal to the plurality of light sources 111.

For example, when the dimming driver 170 outputs a scan signal through the first scan line S1, the input of the first driving device 410 may be activated. The first driving device 410 may receive and store the analog dimming signal through the first, second and third data lines D1, D2 and D3. The first driving device 410 may supply driving currents to the light sources 111 of the first, second, and third dimming blocks 210, 220, and 230 according to the received analog dimming signals.

Thereafter, when the dimming driver 170 outputs a scan signal through the second scan line S2, the input of the second driving device 420 may be activated. The second driving device 420 may receive and store the analog dimming signal through the first, second and third data lines D1, D2 and D3. The second driving device 420 may supply driving currents to the light source 111 of the fourth dimming block 240, the light source 111 of the fifth dimming block 250, and the light source 111 of the sixth dimming block 260 according to the received analog dimming signal. At this time, the input of the first driving device 410 is deactivated, but the first driving device 410 may supply driving currents to the light sources 111 of the first, second, and third dimming blocks 210, 220, and 230 according to the stored analog dimming signal.

As described above, the first driving device 400 may receive the analog dimming signal through the plurality of data lines D1, D2, and D3, and may receive the scan signal through the scan line S1. Based on the reception of the scan signals, the first driving device 400 may supply driving currents to the plurality of dimming blocks 210, 220, and 230 according to the plurality of analog dimming signals.

To implement the active matrix driving method, the plurality of driving devices 400 may include driving circuits 401, 402, and 403 as shown in fig. 12. In an embodiment, each of the driving circuits 401, 402, and 403 may correspond to each of the dimming blocks.

Each of the plurality of driving devices 400 may include: a first driving circuit 401 configured to drive the dimming blocks 210, 240, and 270 of the first column; a second driving circuit 402 configured to drive the dimming blocks 220, 250, and 280 of the second column; and a third driving circuit 403 configured to drive the dimming blocks 230, 260, and 290 of the third column.

Each of the driving circuits 401, 402, and 403 may include a driving transistor Tdr, a switching transistor Tsw, and a storage capacitor Cst. The configuration of each of the driving circuits 401, 402, and 403 may be the same as the configuration of the driving circuit 301 described with reference to fig. 10.

At this time, the first driving circuit 401, the second driving circuit 402, and the third driving circuit 403 may share a single scan line. Further, the first driving circuit 401, the second driving circuit 402, and the third driving circuit 403 may receive analog dimming signals from different data lines (e.g., data lines D1, D2, and D3 as shown in fig. 12).

Fig. 12 is merely an example of the driving device 400, and thus the present disclosure is not limited thereto.

As described above, each driving device 400 may supply driving current to a plurality of dimming blocks 200 disposed at the same row (or included in the same group). In this case, the driving device 400 may receive a scan signal through a single scan line and simultaneously receive a plurality of analog dimming signals through a plurality of data lines.

Fig. 13 illustrates an example of a dimming driver and a light source device included in a display device according to an embodiment of the present disclosure. Fig. 14 illustrates an example of a driving device included in a display apparatus according to an embodiment of the present disclosure.

Referring to fig. 13 and 14, the display apparatus 10 includes a dimming driver 170, a plurality of driving devices 500 (i.e., driving devices 510, 520, and 530), and a plurality of light sources 111.

The plurality of driving devices 500 may receive the analog dimming signal from the dimming driver 170 and supply driving currents to the plurality of light sources 111 in response to the received analog dimming signal.

As shown in fig. 13, each driving device 500 may supply driving current to the light sources 111 included in the three dimming blocks 200 located in the same column. For example, the first driving device 510 may supply driving currents to the plurality of light sources 111 included in the first, fourth, and seventh dimming blocks 210, 240, and 270. The second driving device 520 may supply driving currents to the plurality of light sources 111 included in the second, fifth, and eighth dimming blocks 220, 250, and 280. The third driving device 530 may supply driving currents to the plurality of light sources 111 included in the third, sixth and ninth dimming blocks 230, 260 and 290.

The driving device 500 may supply different driving currents to the light sources 111 included in the different dimming blocks 200 according to the analog dimming signal.

Each driving device 500 may include driving circuits 501, 502, and 503 as shown in fig. 14. Each of the driving circuits 501, 502, and 503 may correspond to each of the dimming blocks 200, and an input of each of the driving circuits 501, 502, and 503 may be activated by a scan signal of the dimming driver 170. When the input is activated, the driving circuits 501, 502, and 503 may receive an analog dimming signal from the dimming driver 170.

For example, when the dimming driver 170 outputs a scan signal through the first scan line S1, inputs of the first driving circuit 501 of the first, second and third driving devices 510, 520 and 530 may be activated. The first driving device 510 may receive an analog dimming signal through the first data line D1. The second driving device 520 may receive the analog dimming signal through the second data line D2. The third driving device 530 may receive the analog dimming signal through the third data line D3.

Thereafter, when the dimming driver 170 outputs a scan signal through the second scan line S2, the inputs of the second driving circuits 502 of the first, second and third driving devices 510, 520 and 530 may be activated. The first driving device 510 may receive an analog dimming signal through the first data line D1. The second driving device 520 may receive the analog dimming signal through the second data line D2. The third driving device 530 may receive the analog dimming signal through the third data line D3.

As described above, each driving device 500 may receive a scan signal through a plurality of scan lines S1, S2, and S3, and an analog dimming signal through a data line D1, D2, or D3. The driving device 500 may sequentially supply driving currents to the plurality of dimming blocks 200 based on sequentially receiving the scan signals.

To implement the active matrix driving method, the plurality of driving devices 500 may include a driving circuit as shown in fig. 14.

Each of the plurality of driving devices 500 may include: a first driving circuit 501 configured to drive the dimming blocks 210, 220, and 230 of the first row; a second driving circuit 502 configured to drive the dimming blocks 240, 250, and 260 of the second row; and a third driving circuit 503 configured to drive the dimming blocks 270, 280, and 290 of the third row.

Each of the first, second, and third driving circuits 501, 502, and 503 may include a driving transistor Tdr, a switching transistor Tsw, and a storage capacitor Cst. The configuration of each of the first driving circuit 501, the second driving circuit 502, and the third driving circuit 503 may be the same as the configuration of the driving circuit (driving device) described with reference to fig. 10.

At this time, the first driving circuit 501, the second driving circuit 502, and the third driving circuit 503 may share a single data line. Further, the inputs of the first driving circuit 501, the second driving circuit 502, and the third driving circuit 503 may be activated by scan signals through different scan lines.

Fig. 14 is only an example of the driving device 500, and thus the present disclosure is not limited thereto.

As described above, each driving device 500 may supply a driving current to the plurality of dimming blocks 200 disposed in the same row. In this case, the driving device 500 may receive the scan signal through a plurality of scan lines and simultaneously receive a plurality of analog dimming signals through a single data line.

In addition, each driving device 500 may supply a driving current to the light sources 111 included in the plurality of dimming blocks 200.

The plurality of dimming blocks 200 may be arranged in a matrix form, and the plurality of dimming blocks 200 may be driven in an active matrix driving method.

For example, each driving device 500 may supply a driving current to each dimming block 200 (specifically, the light source 111 included in the dimming block 200) in an active matrix driving method.

As another example, each driving device 500 may supply driving current to a plurality of dimming blocks 200 included in the same group (or the same row). In other words, the driving device 500 may include driving circuits (e.g., 501, 502, and 503) configured to supply driving currents to the plurality of dimming blocks 200 included in the same group.

In an embodiment, each driving device may receive a scan signal through a single scan line and a plurality of analog dimming signals through a plurality of data lines. In addition, each driving device may include a single scan pin contacting a single scan line, and a plurality of data pins respectively connected to a plurality of data lines.

In an embodiment, each driving device may supply driving current to a plurality of dimming blocks 200 included in different groups (or different rows). In other words, the driving device may include a driving circuit configured to supply driving currents to the plurality of dimming blocks 200 included in the different groups.

In an embodiment, each driving device may sequentially receive a plurality of scan signals through a plurality of scan lines and sequentially receive a plurality of analog dimming signals through a single data line. In addition, each driving device may include a plurality of scan pins contacting a plurality of scan lines, and a single data pin connected to a single data line.

Fig. 15 illustrates an example of a dimming driver and a light source device included in a display device according to an embodiment of the present disclosure.

Referring to fig. 15, the display apparatus 10 includes a dimming driver 170, a plurality of driving devices 600 (i.e., driving devices 610 and 620), and a plurality of light sources 111.

The plurality of driving devices 600 may receive the analog dimming signal from the dimming driver 170 and supply driving currents to the plurality of light sources 111 in response to the received analog dimming signal.

As shown in fig. 15, each driving device 600 may supply driving current to light sources included in six dimming blocks arranged along two rows and three columns (2×3). For example, the first driving device 610 may supply driving currents to the light sources included in the first, second, third, fourth, fifth, and sixth dimming blocks 210, 220, 230, 240, 250, and 260.

Each driving device 600 may include six driving circuits corresponding to six dimming blocks 200. For example, the first driving device 610 may include first, second, third, fourth, fifth, and sixth driving circuits corresponding to the first, second, third, fourth, fifth, and sixth dimming blocks 210, 220, 230, 240, 250, and 260, respectively.

The driving circuit may drive the six dimming blocks, respectively. For example, when the dimming driver 170 outputs a scan signal through the first scan line S1, inputs of the first, second, and third driving circuits included in the first driving device 610 may be activated. The input activated first, second and third driving circuits may receive analog dimming signals through the first, second and third data lines D1, D2 and D3 and supply driving currents to the first, second and third dimming blocks 210, 220 and 230.

When the dimming driver 170 outputs a scan signal through the second scan line S2, inputs of the fourth, fifth, and sixth driving circuits included in the first driving device 61 0 may be activated. The input activated fourth, fifth and sixth driving circuits may receive analog dimming signals through the first, second and third data lines D1, D2 and D3 and supply driving currents to the fourth, fifth and sixth dimming blocks 240, 250 and 260.

As described above, each driving device 600 may receive a scan signal through the plurality of scan lines S1 and S2, and may receive an analog dimming signal through the plurality of data lines D1, D2, and D3.

The number of scan lines S1 and S2 connected to the driving device 600 may correspond to the number of rows to which the dimming block 200 driven by the driving device 600 belongs. In addition, the number of pins through which the driving device 600 receives the scan signal may correspond to the number of rows to which the dimming block 200 driven by the driving device 600 belongs.

The number of data lines D1, D2, and D3 connected to the driving device 600 may correspond to the number of columns to which the dimming block 200 driven by the driving device 600 belongs. In addition, the number of pins through which the driving device 600 receives the analog dimming signal may correspond to the number of columns to which the dimming block 200 driven by the driving device 600 belongs.

Referring to fig. 16, the display apparatus 10 includes a dimming driver 170, a plurality of driving devices 700 (i.e., driving devices 710 and 720), and a plurality of light sources 111.

The plurality of driving devices 700 may receive the analog dimming signal from the dimming driver 170 and supply driving currents to the plurality of light sources 111 in response to the received analog dimming signal.

As shown in fig. 16, each driving device 700 may supply driving current to light sources included in six dimming blocks arranged in three rows and two columns (3×2). For example, the first driving device 710 may supply driving currents to the light sources included in the first, second, fourth, fifth, seventh, and eighth dimming blocks 210, 220, 240, 250, 270, and 280.

Each driving device 700 may include six driving circuits corresponding to six dimming blocks. For example, the first driving device 710 may include first, second, fourth, fifth, seventh, and eighth driving circuits corresponding to the first, second, fourth, fifth, seventh, and eighth dimming blocks 210, 220, 240, 250, 270, and 280, respectively.

The driving circuit may drive the six dimming blocks, respectively. For example, when the dimming driver 170 outputs a scan signal through the first scan line S1, inputs of the first and second driving circuits included in the first driving device 710 may be activated. The input activated first and second driving circuits may receive analog dimming signals through the first and second data lines D1 and D2 and supply driving currents to the first and second dimming blocks 210 and 220.

When the dimming driver 170 outputs a scan signal through the second scan line S2, inputs of the fourth and fifth driving circuits included in the first driving device 710 may be activated. The input activated fourth and fifth driving circuits may receive analog dimming signals through the first and second data lines D1 and D2 and supply driving currents to the fourth and fifth dimming blocks 240 and 250.

When the dimming driver 170 outputs a scan signal through the third scan line S3, inputs of the seventh and eighth driving circuits included in the first driving device 710 may be activated. The input activated seventh and eighth driving circuits may receive the analog dimming signal through the first and second data lines D1 and D2 and supply the driving current to the seventh and eighth dimming blocks 270 and 280.

As described above, each driving device 700 may receive a scan signal through the plurality of scan lines S1, S2, and S3, and may receive an analog dimming signal through the plurality of data lines D1 and D2.

The number of scan lines S1, S2, and S3 connected to the driving device 700 may correspond to the number of rows to which the dimming block 200 driven by the driving device 700 belongs. In addition, the number of pins through which the driving device 700 receives the scan signal may correspond to the number of rows to which the dimming block 200 driven by the driving device 700 belongs.

The number of data lines D1 and D2 connected to the driving device 700 may correspond to the number of columns to which the dimming block 200 driven by the driving device 700 belongs. In addition, the number of pins through which the driving device 700 receives the analog dimming signal may correspond to the number of columns to which the dimming block 200 driven by the driving device 700 belongs.

As shown in fig. 15 and 16, even when the driving device drives the same number of dimming blocks, the number of scan signals and the number of analog dimming signals received by the driving device may be different according to the arrangement of the driven dimming blocks. Accordingly, the driving device 600 shown in fig. 15 is different from the driving device 700 shown in fig. 16.

As described above, the driving device may supply the driving current to the light sources 111 included in the plurality of dimming blocks. In this case, the dimming blocks supplied with the driving current by the same driving device may form a "driving region" on the substrate. In other words, the driving region may indicate a region occupied by the plurality of dimming blocks 200 driven by a single driving device in the light source apparatus 100 or the display apparatus 10.

Fig. 17 illustrates an example of a first surface of a substrate included in a display device according to an embodiment of the present disclosure. Fig. 18 is a diagram showing a portion of the substrate shown in fig. 17. Fig. 19 illustrates an example of a second surface of a substrate included in a display device according to an embodiment of the present disclosure. FIG. 20 is a cross-sectional view taken along the direction A-A' shown in FIG. 17.

Referring to fig. 17, 18, 19, and 20, a plurality of light sources 111 configured to emit monochromatic light (e.g., blue light) and a plurality of driving devices 1100 configured to control driving currents supplied to each of the plurality of light sources 111 may be disposed on a first surface 112a on the substrate 112.

The plurality of light sources 111 may include light sources connected to each other in series, and the light sources connected to each other in series may form the dimming block 1200. For example, nine light sources connected in series with each other may form a dimming block, as shown in fig. 17. In other words, the plurality of light sources 111 disposed on the substrate 112 may be divided into the plurality of dimming blocks 1200.

Each of the plurality of driving devices 1100 may drive the dimming block 1200. Specifically, each of the plurality of driving devices 1100 may control a driving current supplied to the dimming block 1200. For example, the first driving device 1110 may drive the light sources of the first, second, third, and fourth dimming blocks 1210, 1220, 1230, and 1240. The first, second, third and fourth dimming blocks 1210, 1220, 1230 and 1240 may be arranged along four rows and one column. The second driving device 1120 may drive the light sources of the fifth, sixth, seventh and eighth dimming blocks 1250, 1260, 1270 and 1280. The fifth, sixth, seventh and eighth dimming blocks 1250, 1260, 1270, 1280 may be arranged along four rows and columns.

Conductive lines 1310, 1320, and 1330 through which a driving current flows may be disposed on the first surface 112a of the substrate 112. For example, the conductive lines 1310, 1320, and 1330 formed on the first surface 112a may include: a first line 1310 connected between the light sources 111 to allow a driving current to be supplied to each of the light sources 111; a second line 1320 connecting the driving device 1100 to the light source 111 to allow a driving current to be supplied from the driving device 1100 to the light source 111 of each dimming block 1200; and a third line 1330 connecting the dimming driver 170 to the driving device 1100 to allow a dimming signal to be transmitted to the driving device 1100.

The first line 1310 may connect the light sources 111 forming each dimming block 1200 in series with each other. The light sources 111 forming each dimming block 1200 may be arranged along rows and columns so as to be arranged in a matrix form. For example, nine light sources 111 forming a single dimming block may be arranged along three rows and three columns, as shown in fig. 18. Nine light sources 111 may be connected in series by eight first lines 1310. The eight first lines 1310 may connect the nine light sources 111 to each other in the form of a zigzag or english letter "S" or a number "2".

The light sources 111 forming each dimming block 1200 may be connected in different patterns through the first line 1310. For example, as shown in fig. 18, the light sources forming each of the first and second dimming blocks 1210 and 1220 may be connected in a first pattern (english letter "S") through a first line. The light sources forming each of the third and fourth dimming blocks 1230 and 1240 may be connected in a second pattern (digital "2") through a first line.

As described above, the first line 1310 may electrically connect the light sources 111 in the dimming block 1200 to each other.

Each of the second lines 1320 may connect the driving device 1100 to the dimming block 1200. The second wire 1320 may be disposed between the dimming blocks 1210, 1220, 1230, and 1240 driven by the first driving device 1110 and the dimming blocks 1250, 1260, 1270, and 1280 driven by the second driving device 1120. In other words, the second line 1320 may be disposed between a first driving region including the light source driven by the first driving device 1110 and a second driving region including the light source driven by the second driving device 1120.

The second line 1320 may extend from the driving device 1100 toward the dimming block 1200 in a certain direction. For example, the first, second, third and fourth dimming blocks 1210, 1220, 1230 and 1240 connected to the first driving device 1110 may be arranged in a straight line in the y-axis direction, as shown in fig. 18. The second line 1320 may extend from the first driving device 1110 to the first, second, third, and fourth dimming blocks 1210, 1220, 1230, and 1240 in the y-axis direction.

As described above, the second line 1320 may extend in a predetermined direction (e.g., the y-axis direction shown in fig. 18) between the dimming blocks 1200.

The third line 1330 may extend from the dimming driver 170 to the driving device 1100 to transmit the scan signal and the dimming signal of the dimming driver 170 to the driving device 1100.

As shown in fig. 18, the third line 1330 may be disposed between the dimming blocks 1200 and may extend in the same direction as the second line 1320 extends.

As described above, the second wire 1320 and the third wire 1330 for driving and controlling the light source 111 may be disposed between the dimming blocks 1200, particularly between the driving regions, and may extend in a predetermined direction (e.g., the y-axis direction shown in fig. 18). The first line 1310 connecting the light sources 111 to each other may be disposed between the light sources in the dimming block.

As described above, various electronic components (e.g., light sources, driving devices, conductive lines, etc.) for emitting light may be disposed on the first surface 112a of the substrate 112.

On the other hand, a conductive ground plate 1500 connected only to the ground of the display device 10 may be disposed on the second surface 112b of the substrate 112. For example, a pattern (e.g., lines) for driving and controlling the light source 111 may not be formed on the conductive ground plate 1500 provided on the second surface 112b of the substrate 112, as shown in fig. 19.

Accordingly, in the process of manufacturing the substrate 112, a mask for forming a pattern on the second surface 112b of the substrate 112 may not be required, and an etching process for forming a pattern on the second surface 112b may not be required. Accordingly, a process of manufacturing the substrate 112 can be simplified and a cost of manufacturing the substrate 112 can be reduced.

A plurality of holes 1400 may be formed on the substrate 112. As shown in fig. 20, each of the plurality of holes 1400 may penetrate the substrate 112 to extend from the first surface 112a to the second surface 112b of the substrate 112. Each of the plurality of holes 1400 may be larger than the via 1510.

The aperture 1400 of the substrate 112 may be used in a variety of ways.

The hole 1400 of the substrate 112 may be used to fix the substrate 112 in a process of mounting the light source 111 and the driving device 1100 to the substrate 112.

For example, the light source 111 and the driving device 1100 may be mounted to the substrate 112 by a Surface Mount Technology (SMT). The substrate 112 may be fixed to a carrier jig to prevent the substrate 112 from moving during the process of mounting the light source 111 and the driving device 1100 to the substrate 112.

The carrier clamp may include fixing protrusions or fixing pins for fixing the substrate 112. The fixing protrusions or fixing pins of the carrier jig may be inserted into holes 1400 formed in the substrate 112 to fix the substrate 112. In a state where the fixing protrusion or the fixing pin of the carrier jig is inserted into the hole 1400 and the substrate 112 is fixed to the carrier jig, the light source 111 and the driving device 1100 may be mounted on the substrate 112 by heat and pressure.

The holes 1400 may be approximately uniformly provided on the substrate 112 so as to disperse heat and pressure applied to the light source 111 and the driving device 1100, thereby mounting the light source 111 and the driving device 1100 to the substrate 112.

The holes 1400 of the substrate 112 may be used as vias.

The light source 111 may be connected in series between an output terminal of the driving device 1100 and ground through the first line 1310. For example, among the nine light sources shown in fig. 18, the light source at the first end may be electrically connected to the driving device through the second wire. In addition, among the nine light sources shown in fig. 18, the light source at the second end may be electrically connected to ground. Specifically, among the nine light sources shown in fig. 18, the light source at the second end may be electrically connected to the ground plate 1500 of the second surface 112b through the via 1510 penetrating the substrate 112. Each via 1510 may extend from the first surface 112a to the second surface 112b of the substrate 112 by penetrating the substrate 112.

In addition, various ground patterns may be disposed on the first surface 112a of the substrate 112. The ground pattern provided on the first surface 112a may protect the circuitry of the substrate 112 from electromagnetic interference (EMI) generated by the control assembly 50 and/or the power assembly 60, and the ground pattern may ensure electromagnetic compatibility (EMC). In addition, a ground plate 1500, which is also connected to the ground of the display device 10, may be disposed on the second surface 112b of the substrate 112.

In order to connect the ground pattern disposed on the first surface 112a to the ground of the display device, the ground plate 1500 of the second surface 112b may be electrically connected to the ground pattern disposed on the first surface 112a through the via 1510 and/or the hole 1400.

In order to electrically connect the ground plate 1500 of the second surface 112b to the ground pattern provided on the first surface 112a, a conductive material (e.g., a metal film) may be applied to the inside of the hole 1400, as shown in fig. 20. In other words, the hole 1400 formed in the substrate 112 may be used as a through hole.

The potential of the ground plate 1500 may vary due to the charge accumulated in the ground plate 1500. Accordingly, the light source 111 and/or the driving device 1100 may malfunction, or the light source 111 and/or the driving device 1100 may be damaged due to a large surge current flowing into the light source 111 and/or the driving device 1100.

The holes 1400 may be approximately uniformly disposed on the substrate 112 to allow the ground plate 1500 to maintain a uniform potential.

The diameter of each hole 1400 may be slightly smaller than the distance between the light sources 111, but the holes 1400 may interfere with the arrangement of the conductive lines. Thus, the aperture 1400 may be configured so as not to interfere with the placement of the conductive lines 1310, 1320, 1330.

The first line 1310 may connect the light sources 111 in the dimming blocks 1200 in series with each other, and the second line 1320 and/or the third line 1330 may be disposed between the dimming blocks 1200.

Each hole 1400 may be provided inside the dimming block 1200 so as not to interfere with the arrangement of the conductive wires 1310, 1320, and 1330.

As shown in fig. 18, the light sources 111 may be arranged along rows and columns so as to be arranged in a matrix form, and the first line 1310 may be provided in the form of english letter "S" or number "2" along the light sources 111. Accordingly, there are areas between the light sources 111 where the first line 1310 is not provided.

For example, the conductive lines are not disposed in the region surrounded by the four light sources 1211, 1212, 1213, and 1214 adjacent to each other in the first dimming block 1210. Accordingly, the first hole 1410 provided in the region surrounded by the four light sources 1211, 1212, 1213, and 1214 adjacent to each other in the first dimming block 1210 does not interfere with the arrangement of the first wire 1310.

On the other hand, the second wire 1320 and/or the third wire 1330 may be disposed in a region between the dimming blocks 1200. In particular, the second line 1320 extending from the first driving device 1110 to the dimming blocks 1210, 1220, 1230, and 1240 and the third line 1330 extending from the dimming driver 170 to the first driving device 1110 may be disposed between the dimming blocks 1210, 1220, 1230, and 1240 driven by the first driving device 1110 and the dimming blocks 1250, 1260, 1270, and 1280 driven by the second driving device 1120. When the first hole 1410 is disposed between the dimming blocks 1210, 1220, 1230, and 1240 and the dimming blocks 1250, 1260, 1270, and 1280, the first hole 1410 may interfere with the arrangement of the second wire 1320 and/or the third wire 1330.

As described above, the hole 1400 may be provided in the dimming block 1200 so as not to interfere with the arrangement of the second wire 1320 and/or the third wire 1330. In particular, the aperture 1400 may be disposed in a substantially rectangular region surrounded by four light sources adjacent to each other. The four light sources may be light sources in one dimming block and are connected in series with each other.

Fig. 21 illustrates an example of a first surface of a substrate included in a display device according to an embodiment of the present disclosure. Fig. 22 is a diagram showing a portion of the substrate shown in fig. 21.

Referring to fig. 21 and 22, a plurality of light sources 111 configured to emit monochromatic light (e.g., blue light) and a plurality of driving devices 1600 configured to control driving currents supplied to each of the plurality of light sources 111 may be disposed on a first surface 112a on the substrate 112.

The plurality of light sources 111 may include light sources 111 connected to each other in series, and the light sources 111 connected to each other in series may form a dimming block 1700, as shown in fig. 21.

Each of the plurality of driving devices 1600 may drive the dimming block 1700. Specifically, each of the plurality of driving devices 1600 may control a driving current supplied to the dimming block 1700. For example, the first driving device 1610 may drive the light sources 111 of the first, second, third, fourth, fifth, and sixth dimming blocks 1710, 1720, 1730, 1740, 1750, and 1760, as shown in fig. 22. The dimming blocks 1710, 1720, 1730, 1740, 1750, and 1760 driven by the first driving device 1610 may be arranged in three rows and two columns.

Conductive lines 1810, 1820, and 1830 may be disposed on the first surface 112a of the substrate 112, the conductive lines 1810, 1820, and 1830 including a first line 1810 connected between the light sources 111, a second line 1820 connecting the driving device 1600 to the light sources 111, and a third line 1830 connecting the dimming driver 170 to the driving device 1600.

The first wire 1810 may connect the light sources 111 forming each dimming block 1700 in series with each other. As shown in fig. 22, eight first lines 1810 may connect nine light sources 111 to each other in the form of a zigzag or english letter "S" or a number "2" in the dimming block.

Each second line 1820 may connect the driving device 1600 to the dimming block 1700. The second line 1820 may be disposed between dimming blocks driven by a single driving device. For example, the second line 1820 may be disposed between the dimming blocks 1710, 1720, 1730, 1740, 1750, and 1760 driven by the first driving device 1610.

Dimming blocks 1710, 1720, 1730, 1740, 1750, and 1760 may be arranged along three rows and two columns. Dimming blocks 1710, 1720, and 1730 may be disposed in a first column, and dimming blocks 1740, 1750, and 1760 may be disposed in a second column. The second line 1820 may be disposed between the dimming blocks 1710, 1720, and 1730 of the first column and the dimming blocks 1740, 1750, and 1760 of the second column.

The second line 1820 may extend from the driving device 1600 toward the dimming block 1700 in a specific direction. As shown in fig. 22, the second line 1820 may extend from the first driving device 1610 to the first dimming block 1710, the second dimming block 1720, the third dimming block 1730, the fourth dimming block 1740, the fifth dimming block 1750, and the sixth dimming block 1760 in the y-axis direction.

The third line 1830 may extend from the dimming driver 170 to the driving device 1600 to transmit the scan signal and the dimming signal of the dimming driver 170 to the driving device 1600.

The third line 1830 may be disposed between the dimming blocks. However, the third line 1830 may be disposed outside the dimming block 1700 driven by one driving device 1600.

As shown in fig. 22, the third line 1830 may be disposed outside the dimming blocks 1710, 1720, 1730, 1740, 1750 and 1760 driven by the driving device 1610. In addition, the third line 1830 may be disposed between the dimming blocks 1710, 1720, 1730, 1740, 1750, and 1760 driven by the driving device 1610 and the dimming blocks driven by another driving device.

As described above, the second line 1820 may be disposed between dimming blocks driven by one driving device. In addition, the third line 1830 may be disposed between dimming blocks driven by different driving devices.

A plurality of holes 1900 may be formed on the substrate 112. Each of the plurality of holes 1900 may penetrate the substrate 112 to extend from the first surface 112a to the second surface 112b of the substrate 112.

The holes 1900 of the substrate 112 may be used to secure the substrate 112 during the process of mounting the light source 111 and the drive device 1600 to the substrate 112. The holes 1900 may be used as through holes.

The diameter of each hole 1900 may be slightly smaller than the distance between the light sources 111, but the holes 1900 may interfere with the arrangement of the conductive wires. Thus, the holes 1900 may be configured so as not to interfere with the placement of the conductive lines.

Each aperture 1900 may be provided in the dimming block 1700 so as not to interfere with the arrangement of the conductive wires 1810, 1820, and 1830.

As shown in fig. 22, the light sources 111 may be arranged along rows and columns so as to be arranged in a matrix form, and the first line 1810 may be disposed along the light sources 111 in the form of english letter "S" or number "2". Accordingly, there are areas between the light sources 111 where the first lines 1810 are not disposed. For example, the conductive wires are not disposed in the region surrounded by the four light sources 1711, 1712, 1713, and 1714 adjacent to each other in the first dimming block 1710.

Each hole 1900 may be disposed in an area surrounded by four light sources adjacent to each other in the dimming block. Four light sources adjacent to each other may be connected in series with each other. Accordingly, each aperture 1900 may be configured to not interfere with the arrangement of the first wire 1810, the second wire 1820, and/or the third wire 1830.

Although a few embodiments of the present disclosure have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.

Claims

1. A display device, comprising:

a liquid crystal panel;

A plurality of light sources configured to emit light; and

A substrate comprising a plurality of dimming blocks arranged along rows and columns,

Wherein each of the plurality of dimming blocks includes at least four light sources among the plurality of light sources, and the at least four light sources are connected in series with each other and arranged on the first surface of the substrate in rows and columns,

Wherein the substrate includes a plurality of holes extending from the first surface of the substrate to a second surface of the substrate,

Wherein the first surface of the substrate and the second surface of the substrate are electrically connected by the plurality of holes, and

Wherein each of the plurality of holes is in an area surrounded by the at least four light sources of each respective one of the plurality of dimming blocks.

2. The display device of claim 1, further comprising conductive lines on the first surface of the substrate,

Wherein the conductive wire passes between a first dimming block among the plurality of dimming blocks and a second dimming block among the plurality of dimming blocks.

3. The display device of claim 1, further comprising a conductive line disposed on the substrate and connecting the at least four light sources of each respective one of the plurality of dimming blocks in series,

Wherein each of the plurality of holes is disposed between the conductive lines.

4. The display device of claim 3, wherein each of the plurality of dimming blocks comprises nine light sources arranged along three rows and three columns, and

Wherein the conductive wire connects the nine light sources in series in the shape of letter "S" or the shape of number "2".

5. The display device according to claim 1, further comprising:

A first driving device configured to control driving currents supplied to at least four light sources in a first group of dimming blocks among the plurality of dimming blocks; and

A second driving device configured to control driving currents supplied to at least four light sources in a second group of the dimming blocks among the plurality of dimming blocks,

Wherein the first group of dimming blocks, the second group of dimming blocks, the first driving device and the second driving device are disposed on the first surface of the substrate.

6. The display device of claim 5, further comprising a first wire disposed on the first surface of the substrate,

Wherein the first group of dimming blocks and the second group of dimming blocks are arranged along a straight line,

Wherein the first wire extends from the first driving device to each of the first set of dimming blocks, and

Wherein the first wire is between the first set of dimming blocks and the second set of dimming blocks.

7. The display apparatus of claim 6, further comprising a second wire configured to transmit a dimming signal to the first driving device,

Wherein the second wire is disposed on the first surface of the substrate between the first set of dimming blocks and the second set of dimming blocks.

8. The display device of claim 5, further comprising a first wire disposed on the first surface of the substrate,

Wherein the first group of dimming blocks is arranged along a plurality of rows and a plurality of columns,

Wherein the first wire is between the first set of dimming blocks arranged along the plurality of rows and the plurality of columns.

9. The display apparatus of claim 8, further comprising a second wire configured to transmit a dimming signal to the first driving device, wherein the second wire is disposed between the first set of dimming blocks and the second set of dimming blocks on the first surface of the substrate.

10. The display apparatus of claim 5, wherein the first driving device is between the first set of dimming blocks and the second driving device is between the second set of dimming blocks.

11. The display apparatus of claim 10, wherein a relative position of the first driving device in the first set of dimming blocks is different from a relative position of the second driving device in the second set of dimming blocks.

12. The display apparatus according to claim 5, wherein each of the first driving device and the second driving device comprises:

A first transistor including a control terminal;

A capacitor connected to the control terminal of the first transistor; and

And a second transistor connected to the control terminal of the first transistor.

13. The display device of claim 1, further comprising a ground plate disposed on the second surface of the substrate and electrically connected to the plurality of holes.

14. The display device of claim 1, wherein each of the plurality of light sources comprises:

The light-emitting diode is arranged on the substrate by a chip-on-board (COB) method; and

An optical dome includes a cross-section having an arcuate shape or a semi-circular shape.

15. The display device of claim 14, wherein an intensity of a first light beam emitted from a respective light source of the plurality of light sources in a first direction perpendicular to the substrate is less than an intensity of a second light beam emitted from the respective light source of the plurality of light sources in a second direction different from the first direction.