CN110488517B - Liquid crystal display panel and manufacturing method thereof - Google Patents
Liquid crystal display panel and manufacturing method thereof Download PDFInfo
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- CN110488517B CN110488517B CN201910765826.XA CN201910765826A CN110488517B CN 110488517 B CN110488517 B CN 110488517B CN 201910765826 A CN201910765826 A CN 201910765826A CN 110488517 B CN110488517 B CN 110488517B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1323—Arrangements for providing a switchable viewing angle
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention provides an array substrate, a color film substrate, a liquid crystal display panel and a manufacturing method of the liquid crystal display panel. The liquid crystal display panel is provided with a plurality of sub-pixel units defined by data lines and gate lines in a crossed mode, and each sub-pixel unit comprises a display area and a visual angle control area; each display area comprises two first sub-pixels, each visual angle control area comprises a second sub-pixel, and under a narrow visual angle, the oblique light leakage of the sub-pixel units is gradually reduced along the direction from the middle part to two sides of a grid line of the liquid crystal display panel. According to the invention, the display area and the visual angle control area are arranged on each sub-pixel unit, the visual angle control electrode is arranged on the array substrate, and under a narrow visual angle, the oblique light leakage of the liquid crystal display panel under the narrow visual angle is changed by changing the voltage on the visual angle control electrode or changing the light transmission area of the second sub-pixel, so that the production cost is reduced, and the image quality displayed by the display panel under the narrow visual angle is improved.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a liquid crystal display panel and a method for manufacturing the liquid crystal display panel.
Background
With the continuous progress of the liquid crystal display technology, the viewing angle of the display has been widened from about 120 ° to over 160 °, and people want to effectively protect business confidentiality and personal privacy while enjoying visual experience brought by a large viewing angle, so as to avoid business loss or embarrassment caused by the leakage of screen information.
The current display device gradually develops towards the direction of wide viewing angle, and no matter the application of mobile phone terminal, desktop display or notebook computer, besides the requirement of wide viewing angle, in many occasions, the display device is also required to have the function of switching between wide viewing angle and narrow viewing angle.
At present, the switching between the wide viewing angle and the narrow viewing angle is generally realized by the shielding function of the shutter, which requires an additional shielding film outside the display device, and is inconvenient to use.
In the conventional viewing angle switching technology, a viewing angle switching electrode is usually disposed in a pixel structure, for example, a viewing angle control electrode is disposed on a Color Filter substrate (CF), but a metal line is required to be formed to reduce resistance when the viewing angle switching is controlled by the Color Filter substrate, so that the overall production cost is increased. In addition, when the front view is performed in the narrow view angle mode, the front view angle has a small variation range (based on the viewing angle perpendicular to the center of the display screen, there is an angle between the viewing angle and the edge of the screen), and the difference of the viewing angles may cause the problem of uneven display of the screen. When the structure is applied to a small-size (such as a 6-inch mobile phone) screen, the problem of uneven picture display caused by the change of the front viewing angle can not occur under a narrow viewing angle, however, when the structure is applied to a medium-size (such as a 13.3-inch notebook computer) or even larger-size screen, the problem of uneven picture display caused by different viewing angles under the narrow viewing angle during the front viewing can occur.
Disclosure of Invention
The invention aims to provide a liquid crystal display device to solve the problems of flickering and uneven brightness of a picture in a narrow viewing angle of the conventional liquid crystal display device.
The technical problem to be solved by the invention is realized by adopting the following technical scheme.
The invention provides an array substrate for manufacturing a liquid crystal display panel, which comprises a plurality of sub-pixel units formed by intersecting and limiting a plurality of data lines and a plurality of gate lines, wherein each sub-pixel unit comprises a first sub-pixel and a second sub-pixel, the area of the second sub-pixel (12) is smaller than that of the first sub-pixel, a pixel electrode is arranged in the first sub-pixel, and a visual angle control electrode strip is arranged in the second sub-pixel; under the narrow viewing angle, the oblique light leakage of the sub-pixel unit (100) is gradually reduced along the direction from the middle part to the two sides of the liquid crystal display panel.
The invention provides a color film substrate which is used for manufacturing a liquid crystal display panel and comprises a first color resistor, a second color resistor, a third color resistor and a fourth color resistor, wherein the fourth color resistor and any one of the first color resistor, the second color resistor or the third color resistor are in the same column; under the narrow viewing angle, the oblique light leakage of the sub-pixel unit (100) is gradually reduced along the direction from the middle part to the two sides of the liquid crystal display panel.
The invention also provides a liquid crystal display panel, which comprises an array substrate, a color film substrate and a liquid crystal layer positioned between the array substrate and the color film substrate, wherein the liquid crystal display panel is provided with a plurality of sub-pixel units formed by intersecting and limiting data lines and gate lines, each sub-pixel unit comprises a display area and a visual angle control area, and the area of the visual angle control area is smaller than that of the display area; each display area comprises a first sub-pixel, each visual angle control area comprises a second sub-pixel, a visual angle control electrode strip is arranged on an array substrate in each second sub-pixel, each pixel unit comprises a sub-pixel unit, and oblique light leakage of the sub-pixel units is gradually reduced along the direction from the middle to two sides of the liquid crystal display panel under a narrow visual angle.
Furthermore, each row of the viewing angle control electrode strips are electrically connected to form a viewing angle control electrode.
Furthermore, a viewing angle control voltage signal is applied to one end of the viewing angle control electrode, the light transmission area of each first sub-pixel in the sub-pixel units is equal, and the light transmission area of the second sub-pixels in the sub-pixel units is gradually reduced along the direction from the middle part to the two sides of the liquid crystal display panel.
Furthermore, the viewing angle control voltage signal is applied to the middle part of the viewing angle control electrode, and the aperture ratios of the plurality of sub-pixel units are all equal.
Further, the plurality of viewing angle control electrode stripes are longitudinally divided into at least 2N +1 regions, where N is a natural number greater than 0, and a viewing angle control voltage signal applied to the viewing angle control electrode stripes near the middle region of the liquid crystal display panel is greater than a viewing angle control voltage signal applied to the viewing angle control electrode stripes far from the middle region of the liquid crystal display panel.
Furthermore, each sub-pixel unit comprises two first sub-pixels, two thin film transistors are arranged on the array substrate in each sub-pixel unit, a pixel electrode is arranged on the array substrate in each first sub-pixel, and each pixel electrode is connected to one thin film transistor.
Furthermore, a counter electrode is arranged in an area corresponding to the viewing angle control electrode on the color film substrate, the counter electrode comprises a plurality of counter electrode strips, and each counter electrode strip is arranged corresponding to each viewing angle control electrode strip.
Furthermore, the display area of each pixel unit comprises a first color resistor, a second color resistor and a third color resistor which are arranged on the color film substrate; the visual angle control area of each pixel unit comprises a fourth color resistor arranged on the color film substrate, and the fourth color resistor is a white color resistor or a transparent color resistor.
Further, the area of the fourth color filter gradually decreases in a direction from the middle to both sides of the liquid crystal display panel.
The invention also provides a manufacturing method of the liquid crystal display panel, which comprises the following steps:
providing an array substrate;
forming a gate line on an array substrate;
forming an active layer on the gate line;
forming a data line on the array substrate on which the active layer is formed;
forming a first protective layer on the array substrate on which the data lines are formed;
forming an organic planarization layer on the array substrate on which the first protective layer is formed;
forming a common electrode on the array substrate on which the organic planarization layer is formed;
forming a second protective layer on the array substrate on which the common electrode is formed;
forming a second electrode layer on the array substrate on which the second protective layer is formed;
forming a third metal layer on the array substrate on which the second electrode layer is formed, the third metal layer being used for transmitting the viewing angle control signal to the viewing angle control electrode;
providing a color film substrate, and forming a color film substrate,
forming a color resistance layer and a light shielding layer arranged at an interval with the color resistance layer on a color film substrate, wherein the color resistance layer (211) comprises a first color resistance (21), a second color resistance (22), a third color resistance (23) and a fourth color group (24), and the area of the fourth color resistance (24) is gradually reduced along the direction from the middle part to the two sides of the liquid crystal display panel;
and the color film substrate and the array substrate are paired to form the liquid crystal display panel.
Further, the second electrode layer includes a pixel electrode and a viewing angle control electrode.
According to the liquid crystal display panel provided by the invention, one row of second sub-pixels are inserted into every two rows of first sub-pixels, the visual angle control electrode is arranged on the array substrate, and the oblique light leakage of the sub-pixel units of the liquid crystal display panel is changed by changing the voltage on the visual angle control electrode or changing the light transmission area of the second sub-pixels under a narrow visual angle, so that the production cost is reduced, and the picture display of the liquid crystal display panel is more uniform at the narrow visual angle.
Drawings
Fig. 1 is a schematic plan view of an array substrate according to a first embodiment of the invention.
Fig. 2 is a partial structural schematic diagram of fig. 1.
Fig. 3 is a schematic plan view of a color filter substrate according to a first embodiment of the present invention.
Fig. 4 is a partial sectional view taken along a-B in fig. 2.
Fig. 5 is a partial sectional view taken along the direction C-D in fig. 2.
Fig. 6 is a partial cross-sectional view of a first sub-pixel in a first embodiment of the present invention.
Fig. 7 is a partial cross-sectional view of a second sub-pixel in the first embodiment of the present invention.
FIG. 8 is a schematic plan view illustrating a liquid crystal display panel according to a second embodiment of the present invention.
Fig. 9 is a schematic plan view of a color filter substrate according to a second embodiment of the present invention.
Fig. 10 is a schematic plan view of an array substrate according to a third embodiment of the invention.
FIG. 11 is a flow chart of a process for fabricating a liquid crystal display panel according to the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects of the present invention will be made with reference to the accompanying drawings and examples.
[ first embodiment ]
Fig. 1 is a schematic plan view illustrating an array substrate according to a first embodiment of the present invention, fig. 2 is a schematic partial view illustrating the array substrate in fig. 1, fig. 3 is a schematic plan view illustrating a color filter substrate according to the first embodiment of the present invention, fig. 4 is a partial cross-sectional view taken along a direction a-B in fig. 2, fig. 5 is a partial cross-sectional view taken along a direction C-D in fig. 2, fig. 6 is a partial cross-sectional view illustrating a first sub-pixel according to the first embodiment of the present invention, and fig. 7 is a partial cross-sectional view illustrating a second sub-pixel according to the first embodiment of the present invention.
Referring to fig. 1 to 7, the present embodiment provides a liquid crystal display panel (not shown), which includes an array substrate 10, a color filter substrate 20, and a liquid crystal layer 30 located between the array substrate 10 and the color filter substrate 20, wherein the liquid crystal display panel is provided with a plurality of sub-pixel units 100, and an area of each sub-pixel unit 100 on the array substrate 10 is defined by two data lines 101 and two gate lines 102 crossing each other; each sub-pixel unit 100 includes a display region 100a and a viewing angle control region 100b, the viewing angle control region 100b has an area smaller than that of the display region 100a, and the display region 100a and the viewing angle control region 100b have an area of 1:0.33, for example, but not limited thereto; each display area 100a includes two first sub-pixels 11, each viewing angle control area 100b includes a second sub-pixel 12, a gate line 102 is disposed between the first sub-pixel 11 and the second sub-pixel 12, a viewing angle control electrode strip 121a is disposed in each second sub-pixel 12, and each row of the viewing angle control electrode strips 121a is electrically connected to form a viewing angle control electrode 121. In this embodiment, the liquid crystal display panel is controlled to be switched between wide and narrow viewing angles by whether or not a voltage signal is applied to one end of the viewing angle control electrode 121. Specifically, the third metal layer 109 is electrically connected to the viewing angle control electrode 121, and the viewing angle control voltage signal is applied to one side of the viewing angle control electrode 121 through the third metal layer 109.
With continued reference to fig. 1 and fig. 2, two thin film transistors 13 are disposed on the array substrate 10 in each sub-pixel unit 100, one pixel electrode 111 is disposed on the array substrate 10 in each first sub-pixel 11, and each pixel electrode 111 is connected to one thin film transistor 13, that is, one thin film transistor 13 in each sub-pixel unit 100 individually controls one first sub-pixel 11, but is not limited thereto.
Referring to fig. 3, fig. 6 and fig. 7, the structure of the sub-pixel unit 100 on the color filter substrate 20 is shown in fig. 3, wherein the aperture ratio of the second sub-pixel 12 is gradually decreased from the middle to both sides of the liquid crystal display panel. That is, the aperture ratio of the second sub-pixel 12 in the middle of the liquid crystal display panel is the largest, and the aperture ratios of the second sub-pixels 12 at both sides of the liquid crystal display panel are the smallest. Under a narrow viewing angle, from the middle to both sides of the liquid crystal display panel, as the aperture ratio of the second sub-pixel 12 decreases, the oblique light leakage also decreases, so that the contrast and brightness of the sub-pixel unit 100 can be balanced, and the display image quality can be improved.
Specifically, in this embodiment, each pixel unit 110 includes three sub-pixel units 100, and the display area 100a of each pixel unit 110 includes a first color resistor 21, a second color resistor 22, and a third color resistor 23 that are disposed on the color film substrate 20 at intervals; the viewing angle control area 100b of each pixel unit 110 includes a fourth color resistor 24 disposed on the color filter substrate 20, where the fourth color resistor 24 is a white color resistor or a transparent color resistor, and an area of the fourth color resistor 24 gradually decreases from the middle to both sides of the liquid crystal display panel, that is, an aperture ratio of the fourth color resistor 24 gradually decreases from the middle to both sides, for example, the aperture ratio of the fourth color resistor 24 ranges from 0.2 to 0.33, the aperture ratio of the middle is 0.33 that is the largest, and the aperture ratios of both sides are 0.2 that is the smallest. The design can improve the whitening phenomenon and improve the front-view contrast and the image quality of the narrow visual angle. A light-shielding layer (not shown), such as a Black Matrix (BM), is disposed on the color filter substrate 20 and between the first color resistor 21, the second color resistor 22, the third color resistor 23, and the fourth color resistor 24. Further, the light shielding width of the light shielding layer between the fourth color filter 24 and the display area 100a gradually increases from the middle to both sides, so that light leakage at a narrow viewing angle can be avoided by using the light shielding layer, and the aperture ratio of the display area and the light leakage area of the fourth color filter 24 can be effectively increased at the same time.
With reference to fig. 2 to 5, the first sub-pixel 11 includes an array substrate 10 and a gate line 102 disposed on the array substrate 10, an active layer 103 is disposed on the gate line 102, a data line 101 is disposed on the active layer 103, a first passivation layer 104 is disposed over the data line 101, an organic planarization layer 105 is disposed over the first passivation layer 104, a common electrode 106 is disposed on the organic planarization layer 105, a second passivation layer 108 is disposed over the common electrode 106, and a pixel electrode 111 is disposed over the second passivation layer 108. In the second sub-pixel 12, it includes an array substrate 10 and a gate line 102 disposed on the array substrate 10, an active layer 103 is disposed on the gate line 102, a data line 101 is disposed on the active layer 103, a first protective layer 104 is disposed above the data line 101, an organic planarization layer 105 is disposed above the first protective layer 104, a common electrode 106 is disposed on the organic planarization layer 105, a second protective layer 108 is disposed above the common electrode 106, and a viewing angle control electrode 121 is disposed above the second protective layer 108.
Fig. 6 is a partial sectional view of a first sub-pixel in a first embodiment of the present invention, and fig. 7 is a partial sectional view of a second sub-pixel in the first embodiment of the present invention. Referring to fig. 6 and 7, a pair of side electrode stripes 122 is disposed on the color filter substrate 20 in the second sub-pixel 12, the pair of side electrode stripes 122 is disposed opposite to the viewing angle control electrode 121 in the second sub-pixel 12, when a viewing angle control voltage signal is applied to the viewing angle control electrode 121, a deflection electric field is formed between the array substrate 10 in the second sub-pixel 12 and the color filter substrate 20, and no deflection electric field is formed between the array substrate 10 in the first sub-pixel 11 and the color filter substrate 20, so that liquid crystal molecules 30 in the second sub-pixel 12 are deflected, and liquid crystal molecules 30 in the first sub-pixel 11 are not deflected, thereby realizing narrow viewing angle display; when no viewing angle control voltage signal is applied to the viewing angle control electrode 121, no deflection electric field is formed between the array substrate 10 and the color filter substrate 20 in the second sub-pixel 12 and between the array substrate 10 and the color filter substrate 20 in the first sub-pixel 11, so that the liquid crystal molecules 30 in the second sub-pixel 12 and the liquid crystal molecules 30 in the first sub-pixel 11 are not deflected, thereby realizing wide viewing angle display.
[ second embodiment ]
Fig. 8 is a schematic plan structure view of a liquid crystal display panel according to a second embodiment of the present invention, and fig. 9 is a schematic plan structure view of a color film substrate according to the second embodiment of the present invention. Referring to fig. 8 to 9, the difference between the present embodiment and the first embodiment is that the aperture ratio of each sub-pixel unit 100 is equal, that is, the light transmission area of each sub-pixel unit 100 is equal, and the viewing angle control voltage signal is applied to the middle of the viewing angle control electrode 121 on the array substrate 10 through the third metal layer 109, that is, the viewing angle control voltage signal is not input from one end of the viewing angle control electrode 121. When the viewing angle control voltage signal is applied to the middle of the viewing angle control electrode 121, the resistance gradually increases as it extends toward both ends along the direction of the gate line 102 (refer to fig. 8), the voltage on the viewing angle control electrode 121 gradually decreases as the resistance increases, and correspondingly, the electric field in the viewing angle control area 100b also decreases. That is, the electric field of the viewing angle control area 100b gradually decreases from the middle of the liquid crystal display panel to the two ends along the direction of the gate line 102, so that the light leakage in the oblique direction of the sub-pixel unit 100 is reduced, and finally the display panel can generate a uniform display image at a narrow viewing angle.
At this time, in an embodiment of the present invention, the viewing angle control area 100b of each pixel unit 110 includes a fourth color group disposed on the color film substrate 20, and areas of the fourth color groups 24 are equal along a direction from the middle to both sides of the liquid crystal display panel; however, the area of the fourth color filter 24 may be gradually decreased along the direction from the middle to both sides of the liquid crystal display panel, so that a better picture display effect can be obtained at a narrow viewing angle.
For details, please refer to the first embodiment for other structures and components of the present embodiment, which are not described herein.
[ third embodiment ]
Fig. 10 is a schematic plan view of an array substrate according to a third embodiment of the invention. Referring to fig. 10, the difference between the present embodiment and the first embodiment is that each row of the viewing angle control electrodes 121 is divided into at least three regions along the direction parallel to the gate lines 102, and the viewing angle control voltage signal applied to the viewing angle control electrode 121 near the middle of the liquid crystal display panel is greater than the viewing angle control voltage signal applied to the viewing angle control electrode 121 far from the middle of the liquid crystal display panel. That is, the electric field of the viewing angle control region 100b gradually decreases from the middle of the liquid crystal display panel, extending toward both ends along the direction of the gate line 102.
The plurality of viewing angle control electrode stripes 121a are longitudinally divided into at least 2N +1(N is a natural number greater than 0) regions, and a viewing angle control voltage signal applied to the viewing angle control electrode stripes 121a near the middle region of the liquid crystal display panel is greater than a viewing angle control voltage signal applied to the viewing angle control electrode stripes 121a far from the middle region of the liquid crystal display panel.
In the present embodiment, each row of viewing angle control electrodes 12 is divided into, for example, five regions, i.e., an I-th region, an II-th region, a III-th region, an IV-th region, and a V-th region, where the II-th region and the III-th region are symmetrically disposed and the V-th region and the IV-th region are symmetrically disposed; a viewing angle control voltage signal U is applied to the viewing angle control electrode 121 in the I-th region (middle region)IA viewing angle control voltage signal U is applied to the viewing angle control electrodes 121 of the second and third regionsIIA viewing angle control voltage signal U is applied to the viewing angle control electrodes 121 of the V-th and IV-th regionsIIIWherein U isI＞UII＞UIIIThat is, the electric field of the viewing angle control area 100b is gradually decreased from the middle to both sides of the liquid crystal display panel, so that the light leakage in the oblique direction of the pixel unit 110 is reduced, and finally the display panel can generate a uniform display picture at a narrow viewing angle.
At this time, in an embodiment of the present invention, the viewing angle control area 100b of each pixel unit 110 includes a fourth color group disposed on the color film substrate 20, and areas of the fourth color groups 24 are equal along a direction from the middle to both sides of the liquid crystal display panel; however, the area of the fourth color filter 24 may be gradually decreased along the direction from the middle to both sides of the liquid crystal display panel, so that a better picture display effect can be obtained at a narrow viewing angle.
For details, please refer to the first embodiment for other structures and components of the present embodiment, which are not described herein.
Fig. 11 is a flow chart of a manufacturing process of the liquid crystal display panel of the present invention, and with reference to fig. 1 to 5 and fig. 11, the present invention further provides a manufacturing method of the liquid crystal display panel, wherein the manufacturing method of the liquid crystal display panel includes:
providing an array substrate 10;
forming a gate line 102 on the array substrate 10;
forming an active layer 103 on the gate line 102;
forming a data line 101 on the array substrate 10 on which the active layer 103 is formed;
forming a first protective layer 104 on the array substrate 10 on which the data line 101 is formed;
forming an organic planarization layer 105 on the array substrate 10 on which the first protective layer 104 is formed;
forming a common electrode 106 on the array substrate 10 on which the organic planarization layer 105 is formed;
forming a second protective layer 108 on the array substrate 10 on which the common electrode 106 is formed;
forming a second electrode layer including a pixel electrode 111 and a viewing angle control electrode 121 on the array substrate 10 on which the second protective layer 108 is formed;
forming a third metal layer 109 on the array substrate 10 on which the second electrode layer is formed, the third metal layer 109 being used to transmit the viewing angle control signal to the viewing angle control electrode 121;
providing a color film substrate 20, and forming a color resistance layer 211 on the color film substrate 20;
and the color film substrate 20 and the array substrate 10 are paired to form a liquid crystal display panel.
The color film substrate 20 and the array substrate 10 are paired.
Referring to fig. 1 to 7 and 11, the liquid crystal display panel includes a plurality of pixel units 110, and a display area 100a of each pixel unit 110 includes a first color resist 21, a second color resist 22 and a third color resist 23 disposed on a color film substrate 20; the viewing angle control area 100b of each pixel unit 110 includes a fourth color filter 24 disposed on the color filter substrate 20, and the fourth color filter 24 is a white color filter or a transparent color filter.
Specifically, the first color resistor 21 is, for example, any one of a red color resistor, a green color resistor, and a blue color resistor, the second color resistor 22 is, for example, any one of a red color resistor, a green color resistor, and a blue color resistor, and the third color resistor 23 is, for example, any one of a red color resistor, a green color resistor, and a blue color resistor. The colors of the first color resistor 21, the second color resistor 22 and the third color resistor 23 are different, but the areas of the three color resistors are equal.
In one embodiment of the present invention, the area of the fourth color resistor 24 is gradually decreased in a direction from the middle to both sides of the liquid crystal display panel. In other embodiments, the areas of the fourth color resistors 24 may all be equal.
The embodiment of the invention also provides an array substrate 10, which comprises a plurality of sub-pixel units 100 defined by a plurality of data lines 101 and a plurality of gate lines 102 in a crossed manner, wherein each sub-pixel unit 100 comprises a first sub-pixel 11 and a second sub-pixel 12, a pixel electrode 111 is arranged in the first sub-pixel 11, a viewing angle control electrode strip 121a is arranged in the second sub-pixel 12, and oblique light leakage of the sub-pixel units (100) is gradually reduced along the direction from the middle to two sides of the liquid crystal display panel under a narrow viewing angle.
The embodiment of the present invention further provides a color filter substrate 20, which includes a first color resistor 21, a second color resistor 22, a third color resistor 23, and a fourth color resistor 24, where the fourth color resistor 24 is in the same column as any one of the first color resistor 21, the second color resistor 22, or the third color resistor 23, and the fourth color resistor 24 is a white color resistor or a transparent color resistor. Further, the area of the fourth color resistor 24 is gradually reduced along the direction from the middle to both sides of the liquid crystal display panel, and the oblique light leakage of the sub-pixel unit (100) is gradually reduced along the direction from the middle to both sides of the liquid crystal display panel under the narrow viewing angle.
According to the liquid crystal display panel provided by the invention, the display area (100a) and the visual angle control area (100b) are arranged in each sub-pixel unit 100, the visual angle control electrode 121 is arranged on the array substrate 10, and under a narrow visual angle, the oblique light leakage of the sub-pixel units 100 in the front view of the liquid crystal display panel is changed by changing the voltage on the visual angle control electrode 121 or changing the light transmission area of the second sub-pixels 12, so that the production cost is reduced, and the image quality of the picture display of the liquid crystal display panel in the narrow visual angle is improved.
As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The liquid crystal display panel comprises an array substrate (10), a color film substrate (20) and a liquid crystal layer (30) positioned between the array substrate (10) and the color film substrate (20), and is characterized in that a plurality of sub-pixel units (100) formed by crossing and limiting data lines (101) and gate lines (102) are arranged on the liquid crystal display panel, each sub-pixel unit (100) comprises a display area (100a) and a visual angle control area (100b), and the area of the visual angle control area (100b) is smaller than that of the display area (100 a); each display area (100a) comprises a first sub-pixel (11), each viewing angle control area (100b) comprises a second sub-pixel (12), a viewing angle control electrode strip (121a) is arranged on the array substrate (10) in each second sub-pixel (12), and each pixel unit (110) comprises the sub-pixel unit (100); under a narrow viewing angle, along the direction from the middle part to two sides of the liquid crystal display panel, the oblique light leakage of the sub-pixel unit (100) is gradually reduced; each row of the visual angle control electrode strips (121a) are electrically connected to form a visual angle control electrode (121), a visual angle control voltage signal is applied to one end of each visual angle control electrode (121), the light transmission area of each first sub-pixel (11) in the sub-pixel units (100) is equal, and the light transmission area of the second sub-pixels (12) in the sub-pixel units (100) is gradually reduced along the direction from the middle to two sides of the liquid crystal display panel.
2. The liquid crystal display panel comprises an array substrate (10), a color film substrate (20) and a liquid crystal layer (30) positioned between the array substrate (10) and the color film substrate (20), and is characterized in that a plurality of sub-pixel units (100) formed by crossing and limiting data lines (101) and gate lines (102) are arranged on the liquid crystal display panel, each sub-pixel unit (100) comprises a display area (100a) and a visual angle control area (100b), and the area of the visual angle control area (100b) is smaller than that of the display area (100 a); each display area (100a) comprises a first sub-pixel (11), each viewing angle control area (100b) comprises a second sub-pixel (12), a viewing angle control electrode strip (121a) is arranged on the array substrate (10) in each second sub-pixel (12), and each pixel unit (110) comprises the sub-pixel unit (100); under a narrow viewing angle, along the direction from the middle part to two sides of the liquid crystal display panel, the oblique light leakage of the sub-pixel units (100) is gradually reduced, a viewing angle control voltage signal is applied to the middle part of the viewing angle control electrode (121), and the aperture opening ratios of the sub-pixel units (100) are all equal; a visual angle control voltage signal is applied to the middle of a visual angle control electrode (121) on the array substrate (10) through a third metal layer (109), and the visual angle control voltage signal is not input from one end of the visual angle control electrode (121); when a viewing angle control voltage signal is applied to the middle of the viewing angle control electrode (121), it extends toward both ends along the direction of the gate line (102).
3. The liquid crystal display panel comprises an array substrate (10), a color film substrate (20) and a liquid crystal layer (30) positioned between the array substrate (10) and the color film substrate (20), and is characterized in that a plurality of sub-pixel units (100) formed by crossing and limiting data lines (101) and gate lines (102) are arranged on the liquid crystal display panel, each sub-pixel unit (100) comprises a display area (100a) and a visual angle control area (100b), and the area of the visual angle control area (100b) is smaller than that of the display area (100 a); each display area (100a) comprises a first sub-pixel (11), each viewing angle control area (100b) comprises a second sub-pixel (12), a viewing angle control electrode strip (121a) is arranged on the array substrate (10) in each second sub-pixel (12), each pixel unit (110) comprises the sub-pixel unit (100), and the aperture ratios of the sub-pixel units (100) are all equal; under a narrow viewing angle, along the direction from the middle part to two sides of the liquid crystal display panel, the oblique light leakage of the sub-pixel unit (100) is gradually reduced, the plurality of viewing angle control electrode strips (121a) are longitudinally divided into at least 2N +1 areas, wherein N is a natural number larger than 0, and a viewing angle control voltage signal applied to the viewing angle control electrode strip (121a) close to the middle part of the liquid crystal display panel is larger than a viewing angle control voltage signal applied to the viewing angle control electrode strip (121a) far away from the middle part of the liquid crystal display panel.
4. The lcd panel according to any one of claims 1 to 3, wherein each of the sub-pixel units (100) comprises two first sub-pixels (11), two thin film transistors (13) are disposed on the array substrate (10) in each of the sub-pixel units (100), one pixel electrode (111) is disposed on the array substrate (10) in each of the first sub-pixels (11), and each of the pixel electrodes (111) is connected to one of the thin film transistors (13).
5. The lcd panel according to any one of claims 1 to 3, wherein the display region (100a) of each pixel unit (110) comprises a first color resist (21), a second color resist (22) and a third color resist (23) disposed on a color filter substrate (20); the visual angle control area (100b) of each pixel unit (110) comprises a fourth color resistor (24) arranged on a color film substrate (20), and the fourth color resistor (24) is a white color resistor or a transparent color resistor.
6. The liquid crystal display panel according to claim 5, wherein the area of the fourth color resistance (24) is gradually decreased in a direction from the middle to both sides of the liquid crystal display panel.
7. A method for manufacturing a liquid crystal display panel according to any one of claims 1 to 6, comprising:
providing an array substrate (10);
forming a gate line (102) on the array substrate (10);
forming an active layer (103) on the gate line (102);
forming a data line (101) on the array substrate (10) on which the active layer is formed;
forming a first protective layer (104) on the array substrate (10) on which the data line (101) is formed;
forming an organic planarization layer (105) on the array substrate (10) on which the first protective layer (104) is formed;
forming a common electrode (106) on the array substrate (10) on which the organic planarization layer (105) is formed;
forming a second protective layer (108) on the array substrate (10) on which the common electrode (106) is formed;
forming a second electrode layer on the array substrate (10) on which the second protective layer (108) is formed, the second electrode layer including a pixel electrode (111) and a viewing angle control electrode (121);
forming a third metal layer (109) on the array substrate (10) on which the second electrode layer is formed, the third metal layer (109) for transmitting a viewing angle control signal to a viewing angle control electrode (121);
providing a color film substrate (20),
forming a color resistance layer (211) and a light shielding layer arranged at an interval with the color resistance layer on the color film substrate (20), wherein the color resistance layer (211) comprises a first color resistance (21), a second color resistance (22), a third color resistance (23) and a fourth color group (24), and the area of the fourth color resistance (24) is gradually reduced along the direction from the middle part to the two sides of the liquid crystal display panel;
and the color film substrate (20) and the array substrate (10) are paired to form a liquid crystal display panel.
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| CN1991472A (en) * | 2005-12-28 | 2007-07-04 | Lg.菲利浦Lcd株式会社 | Liquid crystal display device and method of controlling viewing angle thereof |
| CN108549173A (en) * | 2018-03-05 | 2018-09-18 | 昆山龙腾光电有限公司 | Backlight module, liquid crystal display device and driving method |
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| JP2018072757A (en) * | 2016-11-04 | 2018-05-10 | セイコーエプソン株式会社 | Microlens array substrate and manufacturing method thereof, electro-optical device and manufacturing method thereof, and electronic apparatus |
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| CN1991472A (en) * | 2005-12-28 | 2007-07-04 | Lg.菲利浦Lcd株式会社 | Liquid crystal display device and method of controlling viewing angle thereof |
| CN108549173A (en) * | 2018-03-05 | 2018-09-18 | 昆山龙腾光电有限公司 | Backlight module, liquid crystal display device and driving method |
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