CN113376904A - Single-color liquid crystal display panel and double-layer liquid crystal display device - Google Patents
Single-color liquid crystal display panel and double-layer liquid crystal display device Download PDFInfo
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- CN113376904A CN113376904A CN202010161029.3A CN202010161029A CN113376904A CN 113376904 A CN113376904 A CN 113376904A CN 202010161029 A CN202010161029 A CN 202010161029A CN 113376904 A CN113376904 A CN 113376904A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 89
- 239000000758 substrate Substances 0.000 claims abstract description 134
- 239000011159 matrix material Substances 0.000 claims abstract description 50
- 239000010410 layer Substances 0.000 claims abstract description 44
- 125000006850 spacer group Chemical group 0.000 claims abstract description 26
- 239000010409 thin film Substances 0.000 claims abstract description 13
- 238000002161 passivation Methods 0.000 claims abstract description 7
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 4
- 239000002355 dual-layer Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000002834 transmittance Methods 0.000 description 5
- 239000010408 film Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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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
-
- 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
- G02F1/133512—Light shielding layers, e.g. black matrix
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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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Geometry (AREA)
Abstract
The invention relates to the technical field of display, and discloses a monochrome liquid crystal display panel and a double-layer liquid crystal display device, wherein the monochrome liquid crystal display panel comprises: the array substrate and the opposite substrate are oppositely arranged; the array substrate comprises a substrate, and a pixel electrode, a passivation layer and a common electrode which are arranged on the substrate, wherein a thin film transistor switch is formed on the substrate; the monochromatic liquid crystal display panel also comprises a grid signal line and a spacer, and the vertical projection of the common electrode on the substrate covers the vertical projection of the grid signal line on the substrate; the gate signal lines and the spacers have overlapping areas in the vertical projection of the substrate, and the black matrix and the gate signal lines are not overlapped in the vertical projection of the substrate except the overlapping areas. The display panel adopts the common electrode to replace the black matrix to cover the grid signal line, so that the coverage area of the black matrix is reduced, and the aperture opening ratio of the panel is favorably improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a single-color liquid crystal display panel and a double-layer liquid crystal display device.
Background
A Dual-Layer Liquid Crystal Display (LCD) technology (Dual-Layer LCD) that is obtained by stacking two LCD panels, one RGB panel for displaying color and one panel for displaying black and white, modulates light emitted from a backlight at least twice before reaching the eyes of the viewer, thereby producing higher contrast. Due to the superposition design of the double-layer liquid crystal box, the dark part of the picture is darker, so that the contrast of the picture is improved, the image display is clearer, and more details are provided. The monochrome LCD layers below the color LCD layers block light from pixels that should be dark before they reach the color layer that produces the full picture. It effectively acts as a per-pixel filter, controlling brightness more accurately than area-based backlight dimming of most other lcd televisions.
Since the backlight needs to transmit through the dual-layer LCD, the transmittance is much lower, so that the size of the pixel of the monochrome LCD is enlarged in order to increase the transmittance of the screen, and the area ratio of the monochrome pixel to the color pixel is currently 2: 1. Because light needs to pass through the monochromatic display screen and the color display screen, both the two layers of screens have a Black Matrix (BM) design; although the aperture ratio of color display is 78.5%, and the aperture ratio of monochrome display is 80.5%, the actual aperture ratio of the screen is only 62.7%, and the actual transmittance of the screen is only about 3%.
Disclosure of Invention
The invention discloses a monochromatic liquid crystal display panel and a double-layer liquid crystal display device.
In order to achieve the purpose, the invention provides the following technical scheme:
a monochrome liquid crystal display panel for black-and-white display in a dual-layer liquid crystal display device, comprising:
the array substrate and the opposite substrate are oppositely arranged; the array substrate comprises a substrate, and a pixel electrode, a passivation layer and a common electrode which are arranged on the substrate, wherein a plurality of thin film transistor switches distributed in an array are formed on the substrate;
the monochrome liquid crystal display panel further comprises a grid signal line, and the vertical projection of the common electrode on the substrate covers the vertical projection of the grid signal line on the substrate;
the array substrate and the opposite substrate are arranged in a cavity, and the array substrate and the opposite substrate are arranged in the cavity;
the array substrate is provided with a substrate, and the array substrate is provided with an array substrate and a counter substrate which are opposite to each other; and the vertical projection of the black matrix on the substrate covers the vertical projection of the spacer on the substrate, the vertical projection of the gate signal line on the substrate and the vertical projection of at least part of the spacer on the substrate have an overlapping region, and the vertical projection of the black matrix on the substrate and the vertical projection of the gate signal line on the substrate have no overlap except the overlapping region.
In the monochrome liquid crystal display panel, the monochrome liquid crystal display panel comprises an array substrate and an opposite substrate which are oppositely arranged, the array substrate comprises a substrate, a pixel electrode, a passivation layer and a common electrode which are arranged on the substrate, a plurality of thin film transistor switches distributed in an array are formed on the substrate, a black matrix is arranged on one side of the opposite substrate facing the array substrate, the monochrome liquid crystal display panel also comprises a grid signal line and a spacer layer, the spacer layer comprises a plurality of spacers, the vertical projection of the black matrix on the substrate covers the vertical projection of each thin film transistor switch on the substrate, the vertical projection of the black matrix on the substrate covers the vertical projection of each spacer on the substrate, the vertical projection of the grid signal line on the substrate and the vertical projection of at least part of the spacer on the substrate have an overlapping region, and the vertical projection of the black matrix on the substrate and the vertical projection of the grid signal line on the substrate do not overlap with the part of the grid signal line except the overlapping region, and the vertical projection of the common electrode on the substrate covers the vertical projection of the gate signal line on the substrate. On one hand, the monochrome liquid crystal display panel is covered by the black matrix at the corresponding position of the thin film transistor and the corresponding position of the spacer, so that the light leakage of the display panel is avoided; on the other hand, a black matrix above the grid signal line is cancelled, and the common electrode is adopted to cover the grid signal line, so that the grid signal line is positioned without light leakage. As for the metal reflection problem, because the monochrome liquid crystal display panel is applied to the double-layer liquid crystal display device, and the monochrome liquid crystal display panel is positioned on the light incident side of the color liquid crystal display panel, the ambient light incident on the monochrome liquid crystal display panel can be ignored, and the normal display cannot be influenced by canceling the black matrix above the grid signal line.
The monochrome liquid crystal display panel provided by the invention adopts the common electrode to replace the black matrix to cover the grid signal line, so that the coverage area of the black matrix is reduced, and the aperture opening ratio of the panel is favorably improved.
Therefore, the single-color liquid crystal display panel improves the aperture opening ratio of the display panel by changing the panel structure, thereby improving the integral transmittance of the screen of the double-layer liquid crystal display device.
Preferably, the width of the gate signal line is 3 to 6 μm.
Preferably, the gate trace and the gate signal line are prepared in the same layer.
Preferably, the common electrode is made of indium tin oxide.
The invention also provides a double-layer liquid crystal display device, which comprises any one of the monochrome liquid crystal display panels and the color liquid crystal display panel, wherein the monochrome liquid crystal display panel is used for performing black and white display, and the color liquid crystal display panel is used for performing color display, and the monochrome liquid crystal display panel is arranged on the light incident side of the color liquid crystal display panel.
Preferably, the liquid crystal display panel further comprises a backlight source arranged on the light incident side of the single-color liquid crystal display panel.
Drawings
Fig. 1 is a schematic structural diagram of a dual-layer lcd device according to an embodiment of the present invention;
FIG. 2 is a flow chart of a process for fabricating a film layer of a monochrome LCD panel according to an embodiment of the present invention;
FIG. 3a is a projection of a monochromatic liquid crystal display panel on an array substrate in the prior art;
FIG. 3b is a projection of a black matrix on an opposite substrate in a monochrome LCD panel of the prior art;
FIG. 3c is a shadow of a single color liquid crystal display panel formed after the cell pairs of FIGS. 3a and 3 b;
FIG. 4a is a projection of a monochrome LCD panel on an array substrate according to an embodiment of the present invention;
FIG. 4b is a schematic diagram of a projection of a black matrix on an opposite substrate in a monochrome LCD panel according to an embodiment of the present invention;
FIG. 4c is a shadow of a single color liquid crystal display panel formed after the cell pair of FIGS. 4a and 4 b;
FIG. 5 is a schematic diagram of a pixel design of a dual-layer LCD device according to an embodiment of the present invention;
FIG. 6 is an enlarged view of the point A in FIG. 5;
FIG. 7 is a schematic view of the structure at A-A in FIG. 6;
FIG. 8 is a schematic view of the structure at B-B in FIG. 6;
FIG. 9 is a prior art color LCD panel design;
FIG. 10 is a prior art black matrix design for a monochrome LCD panel;
FIG. 11 shows the display effect of the prior art after the color LCD panel and the single-color LCD panel are bonded;
FIG. 12 is a schematic diagram of a color LCD panel of a dual-layer LCD device according to an embodiment of the present invention;
FIG. 13 is a black matrix design of a single-color LCD panel in a dual-layer LCD device according to an embodiment of the present invention;
fig. 14 shows the display effect of the double-layer lcd device according to the embodiment of the present invention after the color lcd panel and the single-color lcd panel are bonded together;
FIG. 15 is a diagram illustrating the display effect of a prior art dual-layer LCD device;
fig. 16 shows the display effect of the dual-layer lcd device according to the present invention.
Icon: 1-a monochrome liquid crystal display panel; 11-a substrate; 12-an opposing substrate; 13-pixel electrode; 14-a gate signal line; 15-a passivation layer; 16-a common electrode; 17-a black matrix; 2-color liquid crystal display panel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a double-layer liquid crystal display device, which comprises a monochrome liquid crystal display panel 1 and a color liquid crystal display panel 2, wherein the monochrome liquid crystal display panel 1 is used for performing black-and-white display, the color liquid crystal display panel 2 is used for performing color display, and the monochrome liquid crystal display panel 1 is arranged on the light inlet side of the color liquid crystal display panel 2, as shown in figure 1.
Referring to fig. 7 and 8, in the single-color liquid crystal display panel 1 of the dual-layer liquid crystal display device provided by the present invention, the black matrix 17 above the gate signal line 14 is eliminated, and the common electrode 16 is covered above the gate signal line 14, so that the position of the gate signal line 14 does not leak light, and as for the metal reflection problem, since the single-color liquid crystal display panel 1 is located on the light incident side of the color liquid crystal display panel 2, the ambient light incident on the single-color liquid crystal display panel 1 can be ignored, and the single-color liquid crystal display panel 1 mainly serves as a filter of the color liquid crystal display panel 2, and thus the normal display is not affected.
The invention provides a monochrome liquid crystal display panel 1 for black and white display in a double-layer liquid crystal display device, comprising:
an array substrate and an opposing substrate 12 disposed opposite to each other; the array substrate comprises a substrate 11, and a pixel electrode 13, a passivation layer 15 and a common electrode 16 (as shown in fig. 2, 6, 7 and 8) disposed on the substrate 11, wherein a plurality of thin film transistor switches are formed on the substrate 11 in an array distribution; the monochrome liquid crystal display panel 1 further comprises a gate signal line 14, and the vertical projection of the common electrode 16 on the substrate 11 covers the vertical projection of the gate signal line 14 on the substrate 11;
the array substrate further comprises a spacer layer arranged between the array substrate and the opposite substrate 12, wherein the spacer layer comprises a plurality of spacers;
the array substrate further comprises a black matrix 17 formed on one side of the opposite substrate 12 facing the array substrate, and the vertical projection of the black matrix 17 on the substrate 11 covers the vertical projection of each thin film transistor switch on the substrate 11; and the vertical projection of the black matrix 17 on the substrate 11 covers the vertical projection of each spacer on the substrate 11, the vertical projection of the gate signal line 14 on the substrate 11 and the vertical projection of at least part of the spacer on the substrate 11 have an overlapping region, and the vertical projection of the black matrix 17 on the substrate 11 and the vertical projection of the gate signal line 14 on the substrate 11 have no overlap except the overlapping region.
In the monochrome liquid crystal display panel 1, the monochrome liquid crystal display panel 1 comprises an array substrate and an opposite substrate 12 which are oppositely arranged, the array substrate comprises a substrate 11, a pixel electrode 13, a passivation layer 15 and a common electrode 16 which are arranged on the substrate 11, a plurality of thin film transistor switches distributed in an array are formed on the substrate 11, a black matrix 17 is arranged on one side of the opposite substrate 12 facing the array substrate, the monochrome liquid crystal display panel 1 further comprises a gate signal line 14 and a spacer layer, the spacer layer comprises a plurality of spacers, the vertical projection of the black matrix 17 on the substrate 11 covers the vertical projection of each thin film transistor switch on the substrate 11, the vertical projection of the black matrix 17 on the substrate 11 covers the vertical projection of each spacer on the substrate 11, the vertical projection of the gate signal line 14 on the substrate 11 and the vertical projection of at least part of the spacers on the substrate 11 have an overlapping region, and the vertical projection of the black matrix 17 on the substrate 11 has no overlap with the vertical projection of the gate signal line 14 on the substrate 11 except the overlapping area, and the vertical projection of the common electrode 16 on the substrate 11 covers the vertical projection of the gate signal line 14 on the substrate 11. On one hand, the monochrome liquid crystal display panel 1 is covered by the black matrix 17 at the position corresponding to the thin film transistor and the position corresponding to the spacer, so as to avoid light leakage of the display panel, as shown in fig. 6 and 8; on the other hand, the black matrix 17 above the gate signal line 14 is eliminated, and the common electrode 16 is used to cover the gate signal line 14, so that the gate signal line 14 is not leaked light, as shown in fig. 6 and 7.
As for the metal reflection problem, since the monochrome lcd panel 1 is applied to the dual-layer lcd device, and the monochrome lcd panel 1 is located at the light incident side of the color lcd panel 2, the ambient light incident on the monochrome lcd panel 1 can be ignored, and the cancellation of the black matrix 17 above the gate signal line 14 does not affect the normal display.
The monochrome liquid crystal display panel 1 provided by the invention adopts the common electrode 16 to replace the black matrix 17 to cover the grid signal line 14, so that the coverage area of the black matrix 17 is reduced, and the aperture opening ratio of the panel is favorably improved.
Therefore, the monochrome lcd panel 1 improves the aperture ratio of the display panel by changing the panel structure, thereby improving the transmittance of the entire screen of the dual-layer lcd device.
It should be noted that, the black matrix 17 is disposed at a position corresponding to the spacer, that is, the black matrix 17 is used to shield the spacer, so as to prevent the light leakage phenomenon at the position corresponding to the spacer.
It should be noted that the vertical projection of the black matrix 17 on the substrate 11 covers the vertical projection of the pixel light leakage area on the substrate 11, and the pixel light leakage area refers to the area corresponding to a Thin Film Transistor (TFT).
Specifically, when the monochrome liquid crystal display panel 1 is manufactured, as shown in fig. 2, the following steps are performed:
step S101, preparing a pixel electrode;
step S102, preparing a grid;
step S103, preparing a gate insulating layer;
step S104, preparing an active layer;
s105, preparing a source electrode and a drain electrode;
step S105, preparing a buffer layer;
and S105, preparing a common electrode.
In addition to the above-described configuration, the gate signal line 14 is preferably provided to have a width of 3 μm to 6 μm.
Since the width of the gate signal line 14 in the prior art is generally 7 μm, the monochrome liquid crystal display panel 1 according to the present invention can further reduce the possibility of light leakage of the display panel after removing the black matrix 17 at the portion corresponding to the gate signal line 14 by reducing the width of the gate signal line 14 compared to the prior art.
On the basis of the above technical solution, in order to reduce the number of manufacturing steps of the display panel, an optional embodiment is as follows: the gate trace and the gate signal line 14 are fabricated in the same layer.
The preparation material of the common electrode 16 in the monochrome liquid crystal display panel 1 provided by the invention is indium tin oxide.
It should be noted that although Indium Tin Oxide (ITO) is a transparent conductive material, ITO is used as the common electrode 16 and completely covers the gate signal line 14, so as to shield the electric field of the gate signal line 14, and further, the light leakage problem is not generated.
Specifically, fig. 3a is a projection of a monochromatic liquid crystal display panel 1 on an array substrate in the prior art; FIG. 3b is a projection of a black matrix 17 on the opposite substrate 12 in the monochrome LCD panel 1 of the prior art; FIG. 3c is a shadow of the monochrome liquid crystal display panel 1 formed after the cell alignment of FIGS. 3a and 3 b; fig. 4a is a projection of a monochrome lcd panel 1 provided by an embodiment of the present invention on an array substrate; FIG. 4b is a schematic diagram of the projection of the black matrix 17 on the opposite substrate 12 in the monochrome LCD panel 1 according to the embodiment of the present invention; FIG. 4c is a shadow of the monochrome liquid crystal display panel 1 formed after the cell alignment of FIGS. 4a and 4 b; FIG. 5 is a schematic diagram of a pixel design of a dual-layer LCD device according to an embodiment of the present invention; FIG. 6 is an enlarged view of the point A in FIG. 5; FIG. 7 is a schematic view of the structure at A-A in FIG. 6; FIG. 8 is a schematic view of the structure at B-B in FIG. 6; FIG. 9 is a prior art design of a color LCD panel 2; FIG. 10 shows a black matrix 17 design of a monochrome LCD panel 1 of the prior art; FIG. 11 shows the display effect of the prior art after the color LCD panel 2 and the single-color LCD panel 1 are bonded together; FIG. 12 shows a color LCD panel 2 of a two-layer LCD device according to an embodiment of the present invention; FIG. 13 shows a black matrix 17 design of a single-color LCD panel 1 of a dual-layer LCD device according to an embodiment of the present invention; fig. 14 shows the display effect of the two-layer lcd device according to the embodiment of the present invention after the color lcd panel 2 and the single-color lcd panel 1 are bonded.
It should be noted that, as shown in fig. 3a to 3c and fig. 4a to 4c, the projection area of each film layer except the black matrix 17 on the array substrate in the monochrome lcd panel 1 provided by the embodiment of the present invention in fig. 4a is the same as the projection area of each film layer except the black matrix 17 on the array substrate in fig. 3a in the prior art, and the projection area of the black matrix 17 on the opposite substrate 12 in the monochrome lcd panel 1 provided by the embodiment of the present invention in fig. 4b is significantly smaller than the projection area of the black matrix 17 on the opposite substrate 12 in fig. 3b in the prior art, based on which, after the array substrate and the opposite substrate 12 are aligned, the shadow area of the monochrome lcd panel 1 provided by the embodiment of the present invention as shown in fig. 4c is smaller than the shadow area of the monochrome lcd panel in the prior art in fig. 3 c.
The aperture ratio of the color liquid crystal display panel 2 designed in the double-layer liquid crystal display device provided by the invention is 78.5%, the aperture ratio of the single-color liquid crystal display panel 1 is 80.5%, the actual aperture ratio of the whole device screen is 66%, and the overall aperture ratio is improved by 5% compared with the original design screen. Specifically, as shown in fig. 15 and 16, compared with the prior art, the light shielding effect of the region B in the dual-layer liquid crystal display device provided by the present invention is not changed, and the actual light transmission area of the region a in the dual-layer liquid crystal display device provided by the present invention is greatly increased.
On the basis of the technical scheme, the double-layer liquid crystal display device further comprises a backlight source arranged on the light incident side of the single-color liquid crystal display panel 1.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A monochrome liquid crystal display panel for black and white display in a two-layer liquid crystal display device, comprising:
the array substrate and the opposite substrate are oppositely arranged; the array substrate comprises a substrate, and a pixel electrode, a passivation layer and a common electrode which are arranged on the substrate, wherein a plurality of thin film transistor switches distributed in an array are formed on the substrate;
the monochrome liquid crystal display panel further comprises a grid signal line, and the vertical projection of the common electrode on the substrate covers the vertical projection of the grid signal line on the substrate;
the array substrate and the opposite substrate are arranged in a cavity, and the array substrate and the opposite substrate are arranged in the cavity;
the array substrate comprises an array substrate, a counter substrate and a black matrix, wherein the array substrate is arranged on the opposite substrate, and the vertical projection of the black matrix on the substrate covers the vertical projection of each thin film transistor switch on the substrate; and the vertical projection of the black matrix on the substrate covers the vertical projection of each spacer on the substrate, the vertical projection of the gate signal line on the substrate and the vertical projection of at least part of the spacer on the substrate have an overlapping region, and the vertical projection of the black matrix on the substrate and the vertical projection of the gate signal line on the substrate have no overlap except the overlapping region.
2. The monochrome liquid crystal display panel according to claim 1, wherein the width of the gate signal line is 3 μm to 6 μm.
3. The monochrome liquid crystal display panel of claim 1, wherein the gate electrode and the gate signal line are fabricated in the same layer.
4. The monochrome liquid crystal display panel of any of claims 1-3, wherein the common electrode is made of indium tin oxide.
5. A two-layer liquid crystal display device comprising the monochrome liquid crystal display panel according to any one of claims 1 to 4 for performing black-and-white display and a color liquid crystal display panel for performing color display, the monochrome liquid crystal display panel being provided on a light incident side of the color liquid crystal display panel.
6. The bi-layer lcd device of claim 5, further comprising a backlight disposed at the light incident side of the monochrome lcd panel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010161029.3A CN113376904A (en) | 2020-03-10 | 2020-03-10 | Single-color liquid crystal display panel and double-layer liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010161029.3A CN113376904A (en) | 2020-03-10 | 2020-03-10 | Single-color liquid crystal display panel and double-layer liquid crystal display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024000410A1 (en) * | 2022-06-30 | 2024-01-04 | 京东方科技集团股份有限公司 | Liquid crystal light control panel and display apparatus |
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| US20100045906A1 (en) * | 2006-11-30 | 2010-02-25 | Tsuyoshi Tokuda | Active matrix substrate, liquid crystal display panel, liquid crystal display element, liquid crystal display device, and substrate for liquid crystal display panels |
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