KR102160948B1 - Display Device - Google Patents

Abstract

The present invention is a display panel; A gate driver supplying a gate signal to the display panel; And a data driver supplying a data signal to the display panel, wherein the display panel includes sub-pixels having different sizes for each area in the display area.

Description

Display Device

An embodiment of the present invention relates to a display device.

With the development of information technology, the market for display devices, which is a connection medium between users and information, is growing. Accordingly, a liquid crystal display (LCD), an organic light emitting diode display (OLED), an electrophoretic display (EPD), and a plasma display panel (PDP) ), the use of display devices is increasing.

The display device includes a display panel including subpixels arranged in a matrix form, a driving unit for driving the display panel, and a timing control unit for controlling the driving unit. The driver includes a gate driver that supplies a gate signal to the display panel and a data driver that supplies a data signal to the display panel.

Among the display devices described above, display devices such as a liquid crystal display device and an organic light emitting display device are implemented in a range of small, medium, and large sizes. In the case of a large display device, it is used in various fields, such as being used for cinema television or advertisement by varying the aspect ratio of the display panel.

However, in a conventional display device used for a cinema television, etc., the screen of the display panel is fixed at a specific ratio, so when the input data signal and the screen ratio of the display panel are different, the screen has to be displayed at a distorted ratio. In addition, conventional display devices used for cinema televisions and the like have many limitations, such as being able to display only a fixed aspect ratio.

The present invention for solving the problems of the above-described background technology is to provide a display device capable of realizing a screen having a higher ratio than an input ratio, utilizing a detailed feeling in the center, and improving the appearance of an exterior.

The present invention is a display panel as a means for solving the above problems; A gate driver supplying a gate signal to the display panel; And a data driver supplying a data signal to the display panel, wherein the display panel includes sub-pixels having different sizes for each area in the display area.

The display panel includes a central region, and a left region and a right region positioned to the left and right of the central region, and the sub-pixels formed in the central region and the sub-pixels formed in the left region and the right region are different in size. I can.

The sub-pixels formed in the left and right regions may be larger than the sub-pixels formed in the central region, and the sub-pixels formed in the left and right regions may have the same size.

Sub-pixels formed in the left and right regions may have different sizes according to positions.

The display panel may increase in size as it moves away from the sub-pixel formed in the central area of the display area.

Subpixels having different sizes may have different lengths in a short axis direction, a length in a major axis direction, or a length in a major axis and a minor axis direction.

The present invention has an effect of realizing a screen with a higher ratio than the input ratio, maximizing the detail of the center and improving the sense of appearance of the outer side. In addition, according to the present invention, when a screen having a higher ratio than the input ratio is realized, the distortion ratio of the screen can be reduced, thereby improving display quality. In addition, the present invention has the effect of avoiding the restrictions when implementing a display device used in a cinema television or the like.

1 is a block diagram schematically showing a display device.
FIG. 2 is a schematic configuration diagram of a sub-pixel shown in FIG. 1;
3 is a schematic plan view of a display device.
4 is a configuration diagram of a sub-pixel of a display panel according to a first embodiment of the present invention.
FIG. 5 is a diagram for explaining differences between regions of subpixels according to the configuration of FIG. 4;
6 is a configuration diagram of a sub-pixel of a display panel according to a second exemplary embodiment of the present invention.
7 is a configuration diagram of a sub-pixel of a display panel according to a third exemplary embodiment of the present invention.
8 is an exemplary cross-sectional configuration diagram of a display panel according to a fourth embodiment of the present invention.

Hereinafter, specific details for carrying out the present invention will be described with reference to the accompanying drawings.

1 is a block diagram schematically illustrating a display device, FIG. 2 is a schematic configuration diagram illustrating a sub-pixel illustrated in FIG. 1, and FIG. 3 is a plan view schematically illustrating a display device.

As illustrated in FIG. 1, the display device includes an image supply unit 110, a timing control unit 120, a gate driving unit 130, a data driving unit 140, and a display panel 150.

The image supply unit 110 controls a driving signal including a vertical synchronization signal (Vsync), a horizontal synchronization signal (Hsync), a data enable signal (Data Enable, DE), a clock signal (CLK), and a data signal (DATA). Supply to (120).

The timing control unit 120 outputs a gate timing control signal GDC for controlling an operation timing of the gate driving unit 130 and a data timing control signal DDC for controlling an operation timing of the data driving unit 140. The timing control unit 120 supplies the data signal DATA together with the data timing control signal DDC to the data driver 140.

The gate driver 130 outputs a gate signal while shifting the level of the gate voltage in response to the gate timing control signal GDC supplied from the timing control unit 120. The gate driver 130 supplies a gate signal to the subpixels SP included in the display panel 150 through the gate lines GL1 to GLm. The gate driver 130 is formed in the form of an integrated circuit (IC) or is formed on the display panel 150 in a gate-in panel method.

The data driving unit 140 samples and latches the data signal DATA in response to the data timing control signal DDC supplied from the timing control unit 120, and converts a digital signal into an analog signal in response to the gamma reference voltage. Convert and print. The data driver 140 supplies a data signal DATA to the sub-pixels SP included in the display panel 150 through the data lines DL1 to DLn. The data driver 140 is formed in an integrated circuit (IC) form.

The display panel 150 displays an image in response to the gate signal supplied from the gate driver 130 and the data signal DATA supplied from the data driver 140. The display panel 150 includes subpixels SP that emit light or control light to display an image.

As shown in FIG. 2, one sub-pixel operates in response to a switching transistor SW connected to a gate line GL1 and a data line DL1, and a data signal DATA supplied through the switching transistor SW. And a pixel circuit (PC). Depending on the configuration of the pixel circuit PC, the sub-pixels SP are configured as a liquid crystal display panel including a liquid crystal device or an organic light emitting display panel including an organic light emitting device.

When the display panel 150 is composed of a liquid crystal display panel, it is a TN (Twisted Nematic) mode, VA (Vertical Alignment) mode, IPS (In Plane Switching) mode, FFS (Fringe Field Switching) mode or ECB (Electrically Controlled Birefringence) Implemented in mode. When the display panel 150 is composed of an organic light emitting display panel, this is implemented in a top-emission method, a bottom-emission method, or a dual-emission method. However, the sub-pixel is not limited to a liquid crystal device or an organic light emitting device, and may be configured in other forms (eg, an electrophoretic device).

As shown in FIG. 3, devices included in the display device may be configured as follows. The gate driver 130 may be present in plural according to the resolution and size of the display panel 150 and may be mounted on the first flexible substrate 131 attached to the first side (left) of the display panel 150. have. Since the gate driver 130 may be configured to correspond to the resolution and size of the display panel 150, it may be mounted on a flexible substrate attached to the second side (right side) as well as the first side. Accordingly, the gate signal output from the gate driver 130 is supplied through gate lines connected to the sub-pixels of the display panel 150.

The data driver 140 may be present in a plurality according to the resolution and size of the display panel 150 and is mounted on the second flexible substrate 145 attached to the third side (upper or lower) of the display panel 150 Can be. Accordingly, the data signal output from the data driver 140 is supplied through data lines connected to the sub-pixels of the display panel 150.

The timing control unit 120 is mounted on the first external substrate 125. The first external substrate 125 is electrically connected to the second external substrate 147 through the first connection substrate 127. The second external substrate 147 is electrically connected to the plurality of second flexible substrates 145 on which the plurality of data driving units 140 are mounted. Accordingly, the data signal and various timing control signals output from the timing control unit 120 are supplied to the gate driving unit 130 and the data driving unit 140 through the first connection board 127 and the second external board 147. do.

The image supply unit 110 is mounted on the third external substrate 115. The third external substrate 115 is electrically connected to the first external substrate 135 through the second connection substrate 117. Accordingly, the driving signal output from the image supply unit 110 is supplied to the timing control unit 120 through the second connection substrate 117.

The above-described display device is implemented as a large display device that can be used for cinema television or advertisement by varying the aspect ratio of the display panel. Meanwhile, in a conventional display device used for a cinema television, etc., the screen of the display panel is fixed at a specific ratio, so when the input data signal and the screen ratio of the display panel are different, the screen has to be displayed at a distorted ratio. In addition, conventional display devices used for cinema televisions and the like have many limitations, such as being able to display only a fixed aspect ratio. The present invention is proposed as follows in order to improve and overcome the disadvantages of a display device used in a conventional cinema television or the like.

<First Example>

FIG. 4 is a configuration diagram of a sub-pixel of a display panel according to a first exemplary embodiment of the present invention, and FIG. 5 is a diagram illustrating differences between regions of sub-pixels according to the configuration of FIG. 4.

As shown in FIG. 4, the display panel 150 according to the first embodiment of the present invention includes a central area CA and a non-central area LA and RA located around the central area CA. The size of the formed sub-pixels is different. Since the central area CA and the non-central areas LA and RA are areas for displaying an image, they are included in the display area of the display panel 150.

Specifically, the display panel 150 is divided into a center area CA, a left area LA, and a right area RA. The second and third sub-pixels SP_la and SP_ra formed in the left area LA and the right area RA are formed larger than the first sub-pixel SP_ca formed in the center area CA. That is, the sizes of the first, second, and third sub-pixels SP_ca, SP_la, and SP_ra are formed to have a relationship of SP_la> SP_ca <SP_ra. In addition, the sizes of the second and third sub-pixels SP_la and SP_ra are formed to have a relationship of SP_la = SP_ra.

In the case of the first sub-pixel SP_ca formed in the center area CA and the second and third sub-pixels SP_la and SP_ra formed in the left area LA and the right area RA, the first axis direction (x, The length of the minor axis direction) is the same, but the length of the second axis direction (y, major axis direction) is different.

Specifically, the first, second, and third subpixels SP_ca, SP_la, and SP_ra have the same length in the first axis direction (x), but the length in the second axis direction (y) is the second and third subpixels. (SP_la, SP_ra) is longer. However, this is only an example, and the second and third sub-pixels compared to the first sub-pixel (SP_ca) in order to vary the size of the first sub-pixel (SP_ca) and the second and third sub-pixels (SP_la, SP_ra) The lengths of the first axis direction (x) and the second axis direction (y) of (SP_la, SP_ra) may be increased together.

In this way, increasing the size of the sub-pixels located in the non-central areas (LA, RA) rather than the center area (CA) can increase the visual immersion, so that the screen can be expressed with a larger aspect ratio compared to the preset aspect ratio. do. For example, in the first embodiment, even if an image is supplied in a 16:9 aspect ratio, a screen can be expressed in a 21:9 aspect ratio. However, it should be understood that the above example assumes that the input data signal has an aspect ratio of 16:9, so that the size of the sub-pixels is configured to be suitable for the aspect ratio of 21:9. Therefore, the aspect ratio substantially implemented on the display panel may also vary in various forms according to changes in the aspect ratio of the input data signal and the size of the sub-pixels.

On the other hand, when the sub-pixels are configured in the shape as shown in FIG. 4, a difference occurs in the number of sub-pixels formed in the center area CA, the left area LA, and the right area RA.

As shown in FIG. 5, the number of subpixels formed in the left area LA and the right area RA is greater than the number of subpixels formed in the center area CA. This is because the size of the sub-pixels formed in the left area LA and the right area RA is larger than the size of the sub-pixels formed in the center area CA.

Supplementing the explanation, since each region is limited, if the size of the subpixel in the region increases, the number of subpixels that can be formed in the limited region decreases. Conversely, if the size of the subpixel decreases, the number of subpixels becomes relatively small. This is because there are many. Therefore, the number of subpixels SP_ca, SP_la, and SP_ra formed in the center area CA, the left area LA, and the right area RA is the left area LA <center area CA> the right area RA Have a relationship.

<Second Example>

6 is a configuration diagram of a sub-pixel of a display panel according to a second exemplary embodiment of the present invention.

As shown in FIG. 6, the display panel 150 according to the second embodiment of the present invention includes a central area CA and a non-central area LA and RA positioned around the central area CA. The size of the formed sub-pixels is different. Since the central area CA and the non-central areas LA and RA are areas for displaying an image, they are included in the display area of the display panel 150. In particular, the size of the sub-pixels formed in the non-central regions LA and RA is also different.

Specifically, the display panel 150 is divided into a center area CA, a left area LA, and a right area RA. The second and third sub-pixels SP_la and SP_ra formed in the side area LA and the right area RA are formed larger than the first sub-pixel SP_ca formed in the center area CA. That is, the sizes of the first, second, and third sub-pixels SP_ca, SP_la, and SP_ra are formed to have a relationship of SP_la> SP_ca <SP_ra. In addition, the sizes of the second and third sub-pixels SP_la and SP_ra are formed to have a relationship of SP_la = SP_ra.

In addition, the size of the sub-pixels formed in the left area LA is also different. For example, the 2-2 sub-pixel SP_la2 formed outside the left area LA is the 2-1 sub-pixel SP_la1 formed inside the left area LA. Is formed larger. This is the same between the sub-pixels formed in the right area RA, so the 3-2 sub-pixel SP_ra2 formed outside the right area RA is formed larger than the 3-1 sub-pixel SP_ra1 formed inside the right area RA. do. That is, the size of sub-pixels located in the same area varies according to positions.

In the second embodiment, as in the first embodiment, the first sub-pixel SP_ca formed in the center area CA, and the second and third sub-pixels SP_la formed in the left area LA and the right area RA. To vary the size of SP_ra), the length of the first axis direction (x, minor axis direction) or the length of the second axis direction (y, major axis direction), or the first axis direction (x) and the second axis direction (y) You can vary the length.

If the sizes of the sub-pixels formed in the left area LA and the right area RA are changed by location as in the second embodiment, the size of the sub-pixels is drastically different, so that heterogeneous feelings that may occur when displaying an image can be alleviated.

In this way, if the size of the sub-pixels located in the non-central areas LA and RA is increased than the central area CA, it is possible to visually increase the sense of immersion, so even if an image is supplied in an aspect ratio of 16:9, for example, 21: The screen can be expressed with an aspect ratio of 9. However, it should be understood that the above example assumes that the input data signal has an aspect ratio of 16:9, so that the size of the sub-pixels is configured to be suitable for the aspect ratio of 21:9.

Meanwhile, the sizes of the center area CA, the left area LA, and the right area RA defined in the first and second embodiments described above may vary according to an aspect ratio to be implemented. That is, in the drawing, the ratio of the center area CA, the left area LA, and the right area RA is set to be 1:1:1, but this may be changed in a form such as 1:2:1.

<Third Example>

7 is a configuration diagram of a sub-pixel of a display panel according to a third exemplary embodiment of the present invention.

As shown in FIG. 7, in the display panel 150 according to the third exemplary embodiment of the present invention, the sizes of sub-pixels are different in all areas.

Specifically, the subpixels of the display panel 150 increase in size from the center area CP to the left end area LP or the right end area RP. For example, it can be seen by looking at a change in the size of the outer left sub-pixel SP_lae adjacent to the left end region LP, the central sub-pixel SP_ca formed in the central region CP, and the sub-pixels formed therebetween. As another example, a change in size of the outer right sub-pixel SP_rae adjacent to the right end region RP, the central sub-pixel SP_ca formed in the central region CP, and the sub-pixels formed therebetween can be seen.

The above description merely shows that the size increases along the directions of x1 and x2 so that the size change of the subpixels of one line placed in the first axis direction (x) can be compared. Therefore, the sub-pixels of the display panel 150 are formed to increase in size as the distance increases from the center area CP. Accordingly, the size of the sub-pixels is also in the second axis direction y according to the same rule as in FIG. It will increase.

In the third embodiment, as in the first and second embodiments, in order to increase the size based on the central sub-pixel SP_ca formed in the central region CP, the length or the first axis direction (x, short axis direction) is The length in the biaxial direction (y, the major axis direction) or the length in the first axis direction (x) and the second axis direction (y) may be different.

As in the third embodiment, if the size of all sub-pixels is increased based on the central sub-pixel SP_ca formed in the central region CP, the size of the sub-pixels is drastically different, so that the heterogeneous feeling that may occur during image expression can be further alleviated. I can. In addition, as the size of the sub-pixels gradually increases toward the outside, an effect of enhancing the sense of immersion and presence is expected.

In this way, increasing the size of the sub-pixels gradually increases the size of the sub-pixels as they move away from the center area CP. Therefore, even if an image is supplied in a 16:9 aspect ratio, the screen can be expressed in a 21:9 aspect ratio. You will be able to. However, it should be understood that the above example assumes that the input data signal has an aspect ratio of 16:9, so that the size of the sub-pixels is configured to be suitable for the aspect ratio of 21:9.

<Fourth Example>

8 is an exemplary diagram illustrating a cross-sectional configuration of a display panel according to a fourth exemplary embodiment of the present invention.

The first to third embodiments described above may be applied to various types of display panels according to an arrangement or implementation method of sub-pixels. However, in the fourth embodiment of the present invention, an example will be described that is applied to the structure shown in FIG. 8 below.

As illustrated in FIG. 8A, the first to third embodiments described above may be applied to the flat display panel 150.

As shown in (b) of FIG. 8, the first to third embodiments described above can be applied to the curved display panel 150 bent in the direction in which the viewer is positioned.

As shown in (c) of FIG. 8, the first to third embodiments described above basically take a planar shape, but a first variable (or concave type) that can be bent in the direction r1, the direction in which the viewer is located. ) It can be applied to the display panel 150.

As shown in (d) of FIG. 8, the first to third embodiments described above basically take a planar shape, but a second variable (or convex type) that can be bent in the direction r2, which is the opposite direction in which the viewer is positioned. ) It can be applied to the display panel 150.

Meanwhile, when the first to third embodiments are applied to the display panel 150 of the type shown in FIGS. 8A to 8D, a driving device, a circuit part, and a mechanism part designed in the same way as before may be used. . The explanation is as follows.

① Display panel structure:

The central portion of the display panel is designed to have the same sub-pixel structure and size as in the conventional (16:9 ratio display panel).

Sub-pixels are arranged and configured so that the size of sub-pixels is increased in the outer portion of the display panel, and the ratio of the entire screen of the display panel is 21:9.

② Circuit part:

It is configured in the same way as the conventional circuit diagram of the ratio (16:9 ratio display panel), and the position of the data driver is positioned to match the metal line of the outer portion of the display panel.

③ Mechanism (backlight unit or cover, etc.):

It is configured in the same way as the conventional circuit diagram of the ratio (16:9 ratio display panel), and the backlight unit or cover is configured according to the location of the data driver.

However, when the aspect ratio of the input data signal is difficult to apply to the change in the size of the sub-pixel or the aspect ratio to be implemented, the data signal or the like needs to be varied, so a different driving device may be required. Therefore, in this case, it is necessary to change the design of the device and change the algorithm.

As described above, since the present invention implements a Novel Cinema TV (NCT) in a liquid crystal display (LCD) or an organic light emitting display (OLED) using a thin film transistor (TFT), the following effects can be expected.

1. With a general 16:9 video (UHD, FHD), it is possible to implement a 21:9 ratio (UHD, FHD) on the outside while maintaining the detail in the center.

2. While using the same circuit configuration used in conventional 16:9 ratio display panels (UHD, FHD), it is possible to increase the ratio such as 21:9 ratio.

3. It can be implemented by using the same interface used in conventional 16:9 ratio display panels (UHD, FHD). However, it can be implemented by appropriately changing the interface according to the structural change of the display panel.

As described above, the present invention has an effect of realizing a screen having a higher ratio than the input ratio, utilizing the detail in the center, and improving the sense of appearance of the outside. In addition, according to the present invention, when a screen having a higher ratio than the input ratio is realized, the distortion ratio of the screen can be reduced, thereby improving display quality. In addition, the present invention has the effect of avoiding the restrictions when implementing a display device used in a cinema television or the like.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the technical configuration of the present invention described above is in other specific forms without changing the technical spirit or essential features of the present invention by those skilled in the art. It will be appreciated that it can be implemented. Therefore, the embodiments described above are illustrative in all respects and should be understood as non-limiting. In addition, the scope of the present invention is indicated by the claims to be described later rather than the detailed description. In addition, all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

110: image supply unit 120: timing control unit
130: gate driving unit 140: data driving unit
150: display panel CA: center area
LA: left area RA: right area
SP_ca, SP_la, SP_ra: first, second and third sub-pixels

Claims (6)

Display panel;
A gate driver supplying a gate signal to the display panel; And
A data driver supplying a data signal to the display panel,
The display panel has sub-pixels having different sizes for each area in the display area,
The display panel
A central region, and a left region and a right region positioned to the left and right of the central region,
And the sub-pixels formed in the left area and the right area are larger than the sub-pixels formed in the center area. delete The method of claim 1,
The display device, wherein the size of the subpixels formed in the left area and the right area is the same. The method of claim 1,
And the sub-pixels formed in the left area and the right area have different sizes according to positions. The method of claim 1,
The display panel
And the size increases as the distance from the sub-pixel formed in the central area of the display area increases. The method of claim 1,
Sub-pixels of different sizes are
A display device, characterized in that the length in the minor axis direction, the length in the major axis direction, or the length in the major axis and the minor axis direction are different.

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