Display panel and display device

Abstract

The invention discloses a display panel and a display device.The display panel comprises a first polaroid, an array substrate, a liquid crystal layer, an opposite substrate and a second polaroid which are arranged in a stacked mode, the array substrate comprises a thin film transistor device layer, a color filter layer and an alignment layer, and the alignment layer is arranged on the side, close to the opposite substrate, of the color filter layer; at least part of the thin film transistor device layer is arranged on the side, away from the opposite substrate, of the color filter layer. The array substrate further comprises a third polaroid, the third polaroid is arranged between the color filter layer and the alignment layer, the included angle between the transmission axis of the third polaroid and the transmission axis of the second polaroid ranges from 87 degrees to 93 degrees, and the included angle between the transmission axis of the third polaroid and the transmission axis of the first polaroid ranges from-3 degrees to 3 degrees. The contrast ratio of the display panel can be improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] In the process of producing liquid crystal display panels (Liquid Crystal Display) using COA (Color Filter on Array) technology, a color filter layer containing R / G / B color resistance is set on one side of the array substrate, and the light emitted from the backlight source passes through the lower polarizer, the color filter layer containing R / G / B color resistance, the liquid crystal layer and the upper polarizer in sequence.

[0003] However, since the color filter layer scatters light, the polarization state of the linearly polarized light passing through the lower polarizer changes. When the light with changed polarization state passes through the liquid crystal layer and the upper polarizer, dark state light leakage occurs, which reduces the contrast of the display panel.

[0004] Therefore, it is necessary to propose a new technical solution to solve the above technical problems. Summary of the invention

[0005] The purpose of the present application is to provide a display panel and a display device to improve the contrast of the display panel.

[0006] To solve the above problems, the technical solution of this application is as follows:

[0007] In a first aspect, the present application proposes a display panel, comprising:

[0008] An array substrate;

[0009] An opposing substrate, arranged opposite to the array substrate;

[0010] A liquid crystal layer, disposed between the array substrate and the counter substrate;

[0011] A first polarizer is disposed on a side of the array substrate away from the counter substrate; and

[0012] A second polarizer is disposed on a side of the counter substrate away from the array substrate;

[0013] Wherein, the array substrate comprises a thin film transistor device layer, a color filter layer and an alignment layer, wherein the alignment layer is arranged on a side of the color filter layer close to the counter substrate, and at least part of the thin film transistor device layer is arranged on a side of the color filter layer away from the counter substrate;

[0014] The array substrate also includes a third polarizer, which is arranged between the color filter layer and the alignment layer, and the angle between the transmission axis of the third polarizer and the transmission axis of the second polarizer is in the range of 87 degrees to 93 degrees, and the angle between the transmission axis of the third polarizer and the transmission axis of the first polarizer is in the range of -3 degrees to 3 degrees.

[0015] In one embodiment of the present application, the display panel further includes a planarization layer, and the planarization layer is disposed between the color filter layer and the alignment layer;

[0016] Wherein, the third polarizer is arranged on a side of the planarization layer close to the alignment layer.

[0017] In one embodiment of the present application, the color filter layer includes a plurality of color blocking blocks;

[0018] The array substrate further includes:

[0019] a light shielding layer, disposed on a side of the planarization layer close to the alignment layer, the light shielding layer being provided with openings, each of the openings exposing one of the color resist blocks; and

[0020] A first insulating layer, disposed on a side of the planarization layer close to the alignment layer and covering the light shielding layer;

[0021] Wherein, the third polarizer is arranged on a side of the first insulating layer close to the alignment layer.

[0022] In one embodiment of the present application, the third polarizer includes a metal wire grid layer, and the angle between the transmission axis of the metal wire grid layer and the transmission axis of the second polarizer is in the range of 87 degrees to 93 degrees;

[0023] The metal wire grid layer includes a plurality of metal strips arranged in parallel and at intervals, and the angle between the extending direction of the metal strips and the length direction of the transmission axis of the second polarizer is in the range of -3 degrees to 3 degrees;

[0024] The spacing between two adjacent metal strips is a first spacing, the spacing between two side walls of the same opening along the arrangement direction of the multiple metal strips is a second spacing, and the first spacing is smaller than the second spacing.

[0025] In an embodiment of the present application, a ratio of the first spacing to the second spacing is in a range of 2% to 8.75%.

[0026] In one embodiment of the present application, the third polarizer further includes a plurality of filling portions, the filling portions are filled between two adjacent metal strips, and a side of the filling portion away from the first polarizer is flush with a side of the metal strip away from the first polarizer.

[0027] In one embodiment of the present application, the thin film transistor device layer includes a plurality of thin film transistors;

[0028] The array substrate further includes:

[0029] A second insulating layer is disposed on a side of the first insulating layer close to the alignment layer, and the third polarizer is located between the second insulating layer and the first insulating layer;

[0030] A plurality of pixel electrodes are provided on a side of the second insulating layer close to the alignment layer, and the pixel electrodes are electrically connected to the thin film transistor;

[0031] a third insulating layer, disposed on a side of the second insulating layer close to the alignment layer and covering the plurality of pixel electrodes; and

[0032] The common electrode is arranged on a side of the third insulating layer close to the alignment layer.

[0033] In one embodiment of the present application, the thin film transistor device layer includes a plurality of thin film transistors;

[0034] The array substrate further includes:

[0035] A plurality of pixel electrodes are provided on a side of the color filter layer close to the alignment layer, and the pixel electrodes are electrically connected to the thin film transistor;

[0036] A third insulating layer is provided on a side of the pixel electrode close to the alignment layer;

[0037] a common electrode, disposed on a side of the third insulating layer close to the alignment layer; and

[0038] a fourth insulating layer, disposed on a side of the common electrode close to the alignment layer;

[0039] Wherein, the third polarizer is located between the fourth insulating layer and the alignment layer.

[0040] In one embodiment of the present application, a transmission axis of the third polarizer is perpendicular to a transmission axis of the second polarizer, and a transmission axis of the third polarizer is parallel to a transmission axis of the first polarizer.

[0041] In a second aspect, the present application proposes a display device, which includes the display panel, the display panel includes an array substrate, an opposing substrate, a liquid crystal layer, a first polarizer and a second polarizer, the opposing substrate is arranged opposite to the array substrate; the liquid crystal layer is arranged between the array substrate and the opposing substrate; the first polarizer is arranged on a side of the array substrate away from the opposing substrate; the second polarizer is arranged on a side of the opposing substrate away from the array substrate; the array substrate includes a thin film transistor device layer, a color filter layer and an alignment layer, the alignment layer is arranged on a side of the color filter layer close to the opposing substrate, and at least part of the thin film transistor device layer is arranged on a side of the color filter layer away from the opposing substrate; the array substrate also includes a third polarizer, the third polarizer is arranged between the color filter layer and the alignment layer, the angle between the transmission axis of the third polarizer and the transmission axis of the second polarizer is in the range of 87 degrees to 93 degrees, and the angle between the transmission axis of the third polarizer and the transmission axis of the first polarizer is in the range of -3 degrees to 3 degrees.

[0042] In one embodiment of the present application, the display device further includes a backlight module, and the backlight module is arranged on a side of the first polarizer away from the array substrate;

[0043] Wherein, the light emitting side of the backlight module is arranged toward the first polarizer.

[0044] In the present application, since the color filter layer scatters the light, the polarization state of the linear polarized light passing through the first polarizer changes. The present application arranges a third polarizer between the color filter layer and the alignment layer, and the third polarizer filters the delayed light after passing through the color filter again to become linear polarized light, so that the light with the changed polarization state is re-polarized, and the re-polarized linear polarized light passes through the liquid crystal layer and the second polarizer in sequence, which can improve the dark state light leakage problem caused by the color filter layer scattering light in the traditional display panel, and improve the contrast of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a schematic diagram of a first embodiment of a display panel of the present application;

[0046] Figure 2 is a schematic diagram of an embodiment of the third polarizer of the present application;

[0047] Figure 3 is a schematic diagram of a second embodiment of a display panel of the present application;

[0048] Figure 4 is a schematic diagram of a third embodiment of a display panel of the present application;

[0049] Figure 5It is a schematic diagram of an embodiment of a display device of the present application. DETAILED DESCRIPTION

[0050] The meanings of the terms used in this specification and claims correspond to the meanings commonly understood by those of ordinary skill in the art to which this application belongs. The terms used in this specification and claims are only for the purpose of facilitating the description and understanding of this application, and are not intended to limit this application to the narrow interpretation of the specific terms used in the specification and claims.

[0051] See also Figure 5 The present application proposes a display device 1000, which may be a mobile phone, a tablet computer, an e-reader, an electronic display screen, a laptop computer, a mobile phone, an augmented reality (AR) or virtual reality (VR) display device 1000, a media player, a wearable device, a digital camera, a car navigation system, etc. The display device 1000 includes a display panel 100.

[0052] The present application proposes a display panel 100, which may be a liquid crystal display panel 100 (LCD). The embodiments of the present application are described by taking the liquid crystal display panel 100 as an example.

[0053] Since the virtual reality display device 1000 has very high requirements for resolution and display, in a virtual reality display device 1000 with a pixel density (Pixels Per Inch, PPI) as high as 1500 PPI or 1700 PPI, the size of the pixel (Pixel) is made smaller and smaller, resulting in more obvious electric field interference between pixels, and the electric field interference will affect the deflection of the liquid crystal. Therefore, the contrast of the virtual reality display device 1000 will be lower than that of other display devices 1000, and the virtual reality display device 1000 is more likely to have dark state light leakage problems. The present application improves the display panel 100 of the virtual reality display device 1000 to improve the dark state light leakage problem of the high-resolution virtual reality display device 1000 and improve the contrast of the virtual reality display device 1000.

[0054] Optional, see Figure 1 The display panel 100 includes an array substrate 10, an opposing substrate 30, a liquid crystal layer 40, a first polarizer 50, and a second polarizer 60. The opposing substrate 30 is disposed opposite to the array substrate 10. The liquid crystal layer 40 is disposed between the array substrate 10 and the opposing substrate 30. The first polarizer 50 is disposed on a side of the array substrate 10 away from the opposing substrate 30. The second polarizer 60 is disposed on a side of the opposing substrate 30 away from the array substrate 10.

[0055] The array substrate 10 includes a thin film transistor device layer 11, a color filter layer 12 and an alignment layer 13. The alignment layer 13 is disposed on a side of the color filter layer 12 close to the counter substrate 30, and at least part of the thin film transistor device layer 11 is disposed on a side of the color filter layer 12 away from the counter substrate 30.

[0056] The array substrate 10 further includes a third polarizer 14 , which is disposed between the color filter layer 12 and the alignment layer 13 .

[0057] Optionally, the angle between the transmission axis of the third polarizer 14 and the transmission axis of the second polarizer 60 is in the range of 87 degrees to 93 degrees, and the angle between the transmission axis of the third polarizer 14 and the transmission axis of the first polarizer 50 is in the range of -3 degrees to 3 degrees.

[0058] In the present application, since the color filter layer 12 scatters the light, the polarization state of the linear polarized light passing through the first polarizer 50 changes. In the present application, by arranging the third polarizer 14 between the color filter layer 12 and the alignment layer 13, the third polarizer 14 filters the delayed light after passing through the color filter again into linear polarized light, so that the light with the changed polarization state is re-polarized, and the re-polarized linear polarized light sequentially passes through the liquid crystal layer 40 and the second polarizer 60, which can improve the dark state light leakage problem caused by the scattering of light by the color filter layer 12 in the traditional display panel 100, and improve the contrast of the display panel 100.

[0059] It should be understood that the display mode of the conventional liquid crystal display panel 100 can be divided into a normally black mode and a normally white mode. Taking the normally white mode as an example, when no operating voltage is applied to the liquid crystal, the rod-shaped liquid crystal molecules will be arranged in a posture that is approximately lying flat. At this time, the light can pass through the first polarizer 50 and the second polarizer 60 to the greatest extent, and appear in a bright state. When a voltage is applied to the liquid crystal, the liquid crystal will stand at different angles depending on the voltage. The greater the voltage, the steeper the angle of the liquid crystal, and the less light penetrates the first polarizer 50 and the second polarizer 60, until the liquid crystal stands vertically, and the light can hardly pass through, and appears in a dark state. The display principle of the liquid crystal display panel is mainly to use the electric field to control the orientation of the liquid crystal molecules. The anisotropy of the refractive index of the liquid crystal causes the transmittance to change, thereby displaying an image.

[0060] The linearly polarized light passing through the first polarizer 50 is not scattered, and after passing through the vertically standing liquid crystal, it cannot pass through the second polarizer 60. At this time, the contrast of the liquid crystal display panel is improved.

[0061] However, the linearly polarized light passing through the first polarizer 50 is scattered, which changes the polarization state of the light. At this time, a part of the scattered light can still pass through the second polarizer 60 after passing through the vertically standing liquid crystal, resulting in dark state light leakage, which reduces the contrast of the display panel 100. The present application aims to repolarize the scattered light, reduce the risk of dark state light leakage, and improve the display effect.

[0062] Optionally, the transmission axis of the third polarizer 14 is perpendicular to the transmission axis of the second polarizer 60, and the transmission axis of the third polarizer 14 is parallel to the transmission axis of the first polarizer 50. In this case, the transmittance of the display panel 100 can be further improved, and the problem of dark state light leakage of the display panel 100 can be improved.

[0063] However, it should be understood that in the manufacturing process of the display panel 100, due to the influence of the process accuracy, it is difficult to simultaneously achieve that the transmission axis of the third polarizer 14 is completely parallel to the transmission axis of the first polarizer 50, and the transmission axis of the third polarizer 14 is completely perpendicular to the transmission axis of the second polarizer 60. Due to the fluctuation of the process, when attaching the first polarizer 50, the second polarizer 60 and the third polarizer 14, it is impossible to accurately attach them to the preset position at a preset angle. On the other hand, the product of the polarizer will also have precision errors, so that there is a slight deviation between the actual transmission axis and the calibrated transmission axis. Therefore, when the angle between the transmission axis of the third polarizer 14 and the transmission axis of the second polarizer 60 is in the range of 87 degrees to 93 degrees, and the angle between the transmission axis of the third polarizer 14 and the transmission axis of the first polarizer 50 is in the range of -3 degrees to 3 degrees, the problem of dark state light leakage of the display panel 100 can be further improved without affecting the transmittance of the display panel 100, and the contrast of the display panel 100 can be improved.

[0064] Optionally, the angle between the transmission axis of the third polarizer 14 and the transmission axis of the second polarizer 60 is 87 degrees, 87.1 degrees, 87.2 degrees, 87.3 degrees, 87.4 degrees, 87.5 degrees, 87.6 degrees, 87.7 degrees, 87.8 degrees, 87.9 degrees, 88 degrees, 88.1 degrees, 88.2 degrees, 88.3 degrees, 88.4 degrees, 88.5 degrees, 88.6 degrees, 88.7 degrees, 88.8 degrees, 88.9 degrees, 89 degrees, 89.1 degrees, 89.2 degrees, 89.3 degrees, 89.4 degrees, 89.5 degrees, 89.6 degrees, 89.7 degrees, A value selected from the group consisting of 89.8 degrees, 89.9 degrees, 90 degrees, 90.1 degrees, 90.2 degrees, 90.3 degrees, 90.4 degrees, 90.5 degrees, 90.6 degrees, 90.7 degrees, 90.8 degrees, 90.9 degrees, 91 degrees, 91.1 degrees, 91.2 degrees, 91.3 degrees, 91.4 degrees, 91.5 degrees, 91.6 degrees, 91.7 degrees, 91.8 degrees, 91.9 degrees, 92 degrees, 92.1 degrees, 92.2 degrees, 92.3 degrees, 92.4 degrees, 92.5 degrees, 92.6 degrees, 92.7 degrees, 92.8 degrees, 92.9 degrees, and 93 degrees. As the angle between the transmission axis of the third polarizer 14 and the transmission axis of the second polarizer 60 approaches 90 degrees, the contrast of the display panel 100 is improved more.

[0065] Optionally, the angle between the transmission axis of the third polarizer 14 and the transmission axis of the first polarizer 50 is -3 degrees, -2.9 degrees, -2.8 degrees, -2.7 degrees, -2.6 degrees, -2.5 degrees, -2.4 degrees, -2.3 degrees, -2.2 degrees, -2.1 degrees, -2 degrees, -1.9 degrees, -1.8 degrees, -1.7 degrees, -1.6 degrees, -1.5 degrees, -1.4 degrees, -1.3 degrees, -1.2 degrees, -1.1 degrees, -1 degree, -0.9 degrees, -0.8 degrees, -0.7 degrees, -0.6 degrees, -0. .5 degree, -0.4 degree, -0.3 degree, -0.2 degree, -0.1 degree, 0 degree, 0.1 degree, 0.2 degree, 0.3 degree, 0.4 degree, 0.5 degree, 0.6 degree, 0.7 degree, 0.8 degree, 0.9 degree, 1 degree, 1.1 degree, 1.2 degree, 1.3 degree, 1.4 degree, 1.5 degree, 1.6 degree, 1.7 degree, 1.8 degree, 1.9 degree, 2 degree, 2.1 degree, 2.2 degree, 2.3 degree, 2.4 degree, 2.5 degree, 2.6 degree, 2.7 degree, 2.8 degree, 2.9 degree, 3 degree. As the transmission axis of the third polarizer 14 and the transmission axis of the first polarizer 50 are closer to 0 degree, the transmittance of the display panel 100 is improved more.

[0066] See also Figure 5Optionally, the display device 1000 further includes a backlight module 200 , which is disposed on a side of the first polarizer 50 away from the array substrate 10 . The light emitting side of the backlight module 200 is disposed toward the first polarizer 50 .

[0067] Optionally, the backlight module 200 includes a lamp board. The lamp board includes a plurality of lamp beads arranged in an array. The lamp beads include a light-emitting chip. When the display screen of the display device 1000 is a dark screen, the power of the light-emitting chip can be reduced, thereby reducing the light output brightness of the backlight module 200, further improving the problem of dark state light leakage, and improving the contrast of the display device 1000.

[0068] Optionally, the angle between the transmission axis of the first polarizer 50 and the transmission axis of the second polarizer 60 is in the range of 87 degrees to 93 degrees. Among them, the angle between the transmission axis of the first polarizer 50 and the transmission axis of the second polarizer 60 is 87 degrees, 87.1 degrees, 87.2 degrees, 87.3 degrees, 87.4 degrees, 87.5 degrees, 87.6 degrees, 87.7 degrees, 87.8 degrees, 87.9 degrees, 88 degrees, 88.1 degrees, 88.2 degrees, 88.3 degrees, 88.4 degrees, 88.5 degrees, 88.6 degrees, 88.7 degrees, 88.8 degrees, 88.9 degrees, 89 degrees, 89.1 degrees, 89.2 degrees, 89.3 degrees, 89.4 degrees, 89.5 degrees, 89.6 degrees, 89.7 degrees, One of 89.8 degrees, 89.9 degrees, 90 degrees, 90.1 degrees, 90.2 degrees, 90.3 degrees, 90.4 degrees, 90.5 degrees, 90.6 degrees, 90.7 degrees, 90.8 degrees, 90.9 degrees, 91 degrees, 91.1 degrees, 91.2 degrees, 91.3 degrees, 91.4 degrees, 91.5 degrees, 91.6 degrees, 91.7 degrees, 91.8 degrees, 91.9 degrees, 92 degrees, 92.1 degrees, 92.2 degrees, 92.3 degrees, 92.4 degrees, 92.5 degrees, 92.6 degrees, 92.7 degrees, 92.8 degrees, 92.9 degrees, and 93 degrees. Due to the limitation of process accuracy, it is currently impossible to make the transmission axis of the first polarizer 50 completely perpendicular to the transmission axis of the second polarizer 60. When the transmission axis of the first polarizer 50 and the transmission axis of the second polarizer 60 are within the range of 87 to 93 degrees, a higher transmittance and contrast ratio can be obtained, thereby improving the display effect. As the transmission axis of the first polarizer 50 and the transmission axis of the second polarizer 60 are closer to 90 degrees, the contrast ratio of the display panel 100 is improved.

[0069] Optionally, the counter substrate 30 includes a glass substrate 32 and an optical adhesive layer 31 . The optical adhesive layer 31 is disposed between the liquid crystal layer 40 and the glass substrate 32 , and the glass substrate 32 is disposed between the second polarizer 60 and the optical adhesive layer 31 .

[0070] Optionally, the thin film transistor device layer 11 includes a plurality of thin film transistors.

[0071] Optionally, the array substrate 10 further includes a plurality of pixel electrodes, a third insulating layer 20 and a common electrode 21. The pixel electrode is disposed between the color filter layer 12 and the alignment layer 13, the third insulating layer 20 is disposed between the pixel electrode and the alignment layer 13, and the common electrode 21 is disposed between the third insulating layer 20 and the alignment layer 13. One pixel electrode corresponds to one pixel, and one thin film transistor is electrically connected to one pixel electrode. The film layer where the plurality of pixel electrodes are located is defined as a pixel electrode layer 19, and the material of the pixel electrode and the common electrode 21 includes transparent indium tin oxide (ITO).

[0072] Optionally, the material of the alignment layer 13 includes polyimide.

[0073] Optionally, the third polarizer 14 may be an absorption polarizer. The absorption polarizer is a polarizer formed by coating a dichroic dye, wherein the dichroic dye may be one or more of iodine, azo, anthraquinone, and naphthylimide compounds.

[0074] Optional, see Figure 2 The third polarizer 14 may also be a wire grid polarizer. The wire grid polarizer may be formed by nano-imprinting on the surface of a metal film.

[0075] Optionally, the third polarizer 14 includes a metal wire grid layer 141 , and an angle between a transmission axis of the metal wire grid layer 141 and a transmission axis of the second polarizer 60 is in a range of 87 degrees to 93 degrees.

[0076] Optionally, the metal wire grid layer 141 includes a plurality of metal strips 142 arranged in parallel and at intervals, and an angle between an extension direction Y of the metal strips 142 and a length direction of a transmission axis of the second polarizer 60 is in a range of -3 degrees to 3 degrees.

[0077] When the third polarizer 14 is a metal wire grid polarizer, it has higher transmittance and higher polarization degree than the polarizer formed by dichroic dyes.

[0078] It should be understood that when non-polarized light is incident on the metal wire grid layer 141, the polarized light component parallel to the extension direction Y of the metal strips 142 is reflected by the metal wire grid layer 141, or is absorbed due to work done on the internal electrons of the metal strips 142, and the polarized light component parallel to the arrangement direction X of the metal strips 142 continues to propagate through the metal wire grid layer 141, thereby obtaining polarized light.

[0079] Optionally, the extension direction Y of the metal strips 142 is perpendicular to the arrangement direction X of the plurality of metal strips 142. Since the transmission axis of the metal wire grid layer 141 is parallel to the arrangement direction X of the plurality of metal strips 142, and the transmission axis of the metal wire grid layer 141 needs to be perpendicular to the transmission axis of the second polarizer 60, the arrangement direction X of the plurality of metal strips 142 is perpendicular to the transmission axis of the second polarizer 60, and the extension direction Y of the metal strips 142 is parallel to the transmission axis of the second polarizer 60. In this embodiment, the problem of dark state light leakage can be further improved, and the contrast of the display panel 100 can be improved.

[0080] Optionally, in the process of forming the metal wire grid layer 141 on the metal film without nanoimprinting, the third polarizer 14 further includes a substrate 143, and the material of the substrate 143 is glass. The metal wire grid layer 141 is arranged on one side of the substrate 143. In the process of setting the third polarizer 14, the third polarizer 14 including the substrate 143 and the metal wire grid layer 141 is arranged on the corresponding film layer, thereby improving the flatness of the metal wire grid layer 141 and protecting the metal wire grid layer 141 from damage to ensure that its polarization degree meets the working requirements.

[0081] Optionally, the third polarizer 14 further includes a flattened portion. The flattened portion is filled between two adjacent metal strips 142, and the side of the flattened portion is connected to the side of the metal strip 142. The side of the flattened portion away from the first polarizer 50 is flush with the side of the metal strip 142 away from the first polarizer 50.

[0082] Since the metal wire grid layer 141 is formed by a plurality of metal strips 142 arranged at intervals, the interval between two adjacent metal strips 142 arranged at intervals is a first interval L1. The existence of the first interval L1 will affect the flatness of other film layers located above the third polarizer 14, thereby reducing the forward light extraction efficiency of the display panel 100. In this embodiment, by filling a flattened portion between two adjacent metal strips 142, the step difference caused by the interval arrangement of the plurality of metal strips 142 is eliminated, and the flatness of other film layers located above the third polarizer 14 is improved, thereby improving the forward light extraction efficiency of the display panel 100.

[0083] The material of the filling portion may be optically clear adhesive (OCA).

[0084] See also Figure 1 , in the first embodiment of the present application:

[0085] Optionally, the color filter includes a plurality of color blocks 12a. The color block 12a may be one of a red color block 12a, a green color block 12a, and a blue color block 12a. The color blocks 12a of different colors are made of different materials. In the actual manufacturing process, the color blocks 12a of different colors have different thicknesses, which may affect the flatness of other film layers above the color filter, thereby affecting the forward light extraction efficiency of the display panel 100.

[0086] Optionally, the display panel 100 further includes a planarization layer 15. The planarization layer 15 is disposed between the color filter layer 12 and the alignment layer 13, and the third polarizer 14 is disposed on a side of the planarization layer 15 close to the alignment layer 13. In this embodiment, the planarization layer 15 is disposed on a side of the color filter layer 12 close to the alignment layer 13, thereby improving the flatness of the third polarizer 14 disposed above the planarization layer 15, eliminating the step difference caused by the different thicknesses between the color blocks 12a of different colors, and improving the flatness of the third polarizer 14 and other film layers located above the color filter layer 12, thereby improving the forward light extraction efficiency of the display panel 100.

[0087] Optionally, the display panel 100 further includes a second insulating layer 18, a plurality of pixel electrodes, a third insulating layer 20, and a common electrode 21. The second insulating layer 18 is disposed on a side of the third polarizer 14 close to the alignment layer 13. A plurality of pixel electrodes are disposed on a side of the second insulating layer 18 close to the alignment layer 13. The third insulating layer 20 is disposed on a side of the second insulating layer 18 close to the alignment layer 13 and covers the plurality of pixel electrodes. The common electrode 21 is disposed on a side of the third insulating layer 20 close to the alignment layer 13. The pixel electrode is electrically connected to the thin film transistor of the thin film transistor device layer 11 to control the deflection of the liquid crystal.

[0088] In this embodiment, the third polarizer 14 is arranged on a side of the pixel electrode away from the alignment layer 13 . When the third polarizer 14 is a metal wire grid polarizer, the interference of the metal wire grid polarizer on the liquid crystal deflection electric field can be reduced, thereby improving the contrast and display effect of the display panel 100 .

[0089] In a manufacturing process of the display panel 100 , after the planarization layer 15 is formed on the color filter layer 12 , a metal film is formed on the planarization layer 15 . The metal film is subjected to nano-imprinting treatment to form the third polarizer 14 , which includes a metal wire grid layer 141 .

[0090] In another manufacturing process of the display panel 100 , after the planarization layer 15 is formed on the color filter layer 12 , the third polarizer 14 including the substrate 143 and the metal wire grid layer 141 is disposed on the planarization layer 15 .

[0091] See also Figure 3 , in the second embodiment of the present application:

[0092] In order to avoid redundancy, the second embodiment of the present application will describe parts different from the first embodiment of the present application.

[0093] The second embodiment of the present application is different from the first embodiment of the present application in that:

[0094] Optionally, the array substrate 10 further includes a light shielding layer 16 and a first insulating layer 17. The light shielding layer is disposed on a side of the planarization layer 15 close to the alignment layer 13. The first insulating layer 17 is disposed on a side of the planarization layer 15 close to the alignment layer 13 and covers the light shielding layer 16. The third polarizer 14 is disposed on a side of the first insulating layer 17 close to the alignment layer 13.

[0095] Optionally, the material of the light shielding layer 16 includes metal, and the metal includes at least one of molybdenum, chromium, iron, aluminum, and copper.

[0096] Optionally, the material of the light shielding layer 16 includes metal oxide, which includes at least one of iron oxide, molybdenum oxide and aluminum oxide.

[0097] Optionally, the material of the light shielding layer 16 may be silicide, including molybdenum silicide.

[0098] Optionally, the light shielding layer 16 may be a black matrix layer (Black Matrix, BM), and the material of the black matrix layer includes black organic photoresist.

[0099] Optionally, the light shielding layer 16 is provided with an opening 16 a , and one opening 16 a exposes one color resist block 12 a .

[0100] A shading layer 16 including a plurality of openings 16a is provided between the third polarizer 14 and the color filter layer 12. On the one hand, the crosstalk between light of different colors of adjacent pixels can be reduced, thereby improving the display effect. On the other hand, after the polarized light passing through the first polarizer 50 is scattered by the color filter layer 12, light output at multiple angles will be formed. The light output at multiple angles will form an angle with the normal direction. The small-angle light output with a smaller angle with the normal direction can increase the forward light output intensity of the display panel 100, thereby improving the display effect. The large-angle light output with a larger angle with the normal direction will cause color deviation and affect the display effect. By providing the shading layer 16, the light output at a large angle can be preliminarily filtered out, thereby reducing the influence of color deviation on the display effect.

[0101] When the material of the light shielding layer 16 is metal, metal has a high reflectivity. The light shielding layer 16 can reflect and reuse the light with a large viewing angle passing through the color filter layer 12, thereby preventing the light with a large viewing angle from being absorbed or causing crosstalk to adjacent pixels, thereby improving the transmittance and contrast of the display panel 100.

[0102] Optionally, the spacing between the two side walls of the same opening 16a along the arrangement direction X of the plurality of metal strips 142 is a second spacing L2. Within a certain range, as the second spacing L2 decreases, the light output with a large viewing angle that can pass through the opening 16a also decreases, and the opening 16a has a stronger initial filtering effect on the light output with a large viewing angle.

[0103] Optionally, in the metal wire grid layer 141, the gap between two adjacent metal strips 142 forms a first gap portion, and the width of the first gap portion is the first spacing L1. The orthographic projection of at least one first gap portion on the light shielding layer 16 is located in the region where the opening 16a is located.

[0104] Optionally, the first spacing L1 is smaller than the second spacing L2. Since the metal wire grid layer 141 is formed by nanoimprinting, and the opening 16a is formed by patterning on the light shielding layer 16, the patterning includes dry etching, wet etching, photoresist etching, plasma etching and other processing methods, and the specific processing method is related to the material of the light shielding layer 16. Therefore, the first spacing L1 between two adjacent metal strips 142 is smaller than the second spacing L2 of the opening 16a.

[0105] It can be understood that the gap between the two side walls of the opening 16a along the arrangement direction X of the metal strips 142 forms a second gap portion. The first gap portion and the second gap portion at least partially overlap in the thickness direction of the display panel 100. The first spacing L1 is smaller than the second spacing L2, which can be understood as a design in which a large hole overlaps a small hole, wherein the second gap portion is a large hole and the first gap portion is a small hole. The opening 16a performs preliminary filtering on the light with a large viewing angle. When the material of the light shielding layer 16 is metal, the light shielding layer 16 reflects and reuses the light with a too large light output angle, thereby avoiding the large viewing angle from affecting the display effect and reusing the large viewing angle light output. When the light preliminarily filtered through the opening 16a reaches the metal wire grid layer 141, only the light that meets the preset light output angle can pass through the second gap portion between two adjacent metal strips 142 in the metal light shielding layer 16. The second gap portion plays the role of filtering again to ensure that the large viewing angle light output is filtered out as much as possible, further improving the contrast and display effect of the display panel 100.

[0106] Optionally, the ratio of the first interval L1 to the second interval L2 is in the range of 2% to 8.75%.

[0107] When the ratio of the first spacing L1 to the second spacing L2 is within the above range, the filtering effect of the light with a large viewing angle is better, and the contrast and display effect of the display panel 100 can be improved. The ratio of the first spacing L1 to the second spacing L2 is 2%, 2.25%, 2.5%, 2.75%, 3%, 3.25%, 3.5%, 3.75%, 4%, 4.25%, 4.5%, 4.75%, 5%, 5.25%, 5.5%, 5.75%, 6%, 6.25%, 6.5%, 6.75%, 7%, 7.25%, 7.5%, 7.75%, 8%, 8.25%, 8.5%, 8.75%.

[0108] When the display panel 100 of the present application is used for a high-resolution virtual reality display device 1000, the pixel density of the high-resolution virtual reality display device 1000 is 1700PPI. In the display panel 100 of 1700PPI, the value range of the first spacing L1 is in the range of 50 nanometers to 140 nanometers, and the value range of the second spacing L2 is in the range of 1600 nanometers to 2500 nanometers. Among them, although the reduction of the first spacing L1 will increase the polarization degree, it will also reduce the light output rate of some viewing angles. Therefore, the first spacing L1 needs to be specifically set according to the transmittance requirements and contrast requirements of the actual product. When the value range of the first spacing L1 is between 80 nanometers and 120 nanometers, a better balance can be achieved between transmittance and contrast.

[0109] In order to improve the flatness of the film layer above the shading layer 16 , a filling portion may be filled in the opening 16 a , and the side of the filling portion filled in the opening 16 a away from the first polarizer 50 is flush with the side of the shading layer 16 away from the first polarizer 50 .

[0110] In a manufacturing process of the display panel 100 , after forming the first insulating layer 17 on the light shielding layer 16 , a metal film is formed on the first insulating layer 17 . The metal film is subjected to nano-imprinting processing to form the third polarizer 14 , which includes a metal wire grid layer 141 .

[0111] In another manufacturing process of the display panel 100 , after the first insulating layer 17 is formed on the light shielding layer 16 , the third polarizer 14 including the substrate 143 and the metal wire grid layer 141 is disposed on the first insulating layer 17 .

[0112] See also Figure 4 , in the third embodiment of the present application:

[0113] In order to avoid redundancy, the third embodiment of the present application will describe the parts that are different from the first and second embodiments of the present application.

[0114] The second embodiment of the present application is different from the first embodiment and the second embodiment of the present application in that:

[0115] Optionally, the array substrate 10 further includes a fourth insulating layer 22 , which is disposed on a side of the common electrode 21 close to the alignment layer 13 . The third polarizer 14 is disposed between the fourth insulating layer 22 and the alignment layer 13 .

[0116] In this embodiment, the third polarizer 14 is disposed close to the alignment layer 13. The linear polarized light passing through the third polarizer 14 can directly reach the liquid crystal layer 40, reducing the distance of the linear polarized light to reach the liquid crystal layer 40, thereby preventing the linear polarized light from being scattered or interfered by other film layers between the third polarizer 14 and the liquid crystal layer 40, thereby improving the contrast and display effect of the display panel 100.

[0117] In a manufacturing process of the display panel 100 , after forming the fourth insulating layer 22 on the common electrode 21 , a metal film is formed on the fourth insulating layer 22 , and the metal film is nano-imprinted to form the third polarizer 14 , which includes a metal wire grid layer 141 .

[0118] In another manufacturing process of the display panel 100 , after the fourth insulating layer 22 is formed on the light shielding layer 16 , the third polarizer 14 including the substrate 143 and the metal wire grid layer 141 is disposed on the fourth insulating layer 22 .

[0119] Optionally, the material of the first insulating layer 17 , the second insulating layer 18 , the third insulating layer 20 , and the fourth insulating layer 22 includes at least one of silicon oxide, silicon nitride, and silicon oxynitride.

[0120] See also Figure 5 , the present application proposes a display device 1000 .

[0121] In order to avoid redundancy, the display device 1000 of the present application will describe the parts that are different from the display panel 100 of the third embodiment of the present application.

[0122] The display device 1000 includes a display panel 100 and a backlight module 200 . The backlight module 200 is disposed on a side of the first polarizer 50 away from the array substrate 10 . The light emitting side of the backlight module 200 is disposed toward the first polarizer 50 .

[0123] The above is a detailed description of the specific implementation of the present application. The above implementation disclosed in the present application is only the preferred implementation of the present application. For ordinary technicians in this field, many modifications and improvements can be made without departing from the concept of the present application. These modifications and improvements all fall within the scope of protection defined by the claims of the present application.

Claims

1. A display panel, characterized in that: include: An array substrate; An opposing substrate, arranged opposite to the array substrate; A liquid crystal layer, disposed between the array substrate and the counter substrate; A first polarizer, disposed on a side of the array substrate away from the counter substrate; as well as A second polarizer is disposed on a side of the counter substrate away from the array substrate; Wherein, the array substrate comprises a thin film transistor device layer, a color filter layer and an alignment layer, wherein the alignment layer is arranged on a side of the color filter layer close to the counter substrate, and at least part of the thin film transistor device layer is arranged on a side of the color filter layer away from the counter substrate; The array substrate also includes a third polarizer, which is arranged between the color filter layer and the alignment layer, and the angle between the transmission axis of the third polarizer and the transmission axis of the second polarizer is in the range of 87 degrees to 93 degrees, and the angle between the transmission axis of the third polarizer and the transmission axis of the first polarizer is in the range of -3 degrees to 3 degrees.

2. The display panel according to claim 1, wherein: The display panel further comprises a planarization layer, wherein the planarization layer is disposed between the color filter layer and the alignment layer; Wherein, the third polarizer is arranged on a side of the planarization layer close to the alignment layer.

3. The display panel according to claim 2, wherein: The color filter layer includes a plurality of color blocking blocks; The array substrate further includes: a light shielding layer, disposed on a side of the planarization layer close to the alignment layer, the light shielding layer being provided with openings, each of the openings exposing one of the color resist blocks; and A first insulating layer, disposed on a side of the planarization layer close to the alignment layer and covering the light shielding layer; Wherein, the third polarizer is arranged on a side of the first insulating layer close to the alignment layer.

4. The display panel according to claim 3, wherein: The third polarizer includes a metal wire grid layer, and the angle between the transmission axis of the metal wire grid layer and the transmission axis of the second polarizer is in the range of 87 degrees to 93 degrees; The metal wire grid layer includes a plurality of metal strips arranged in parallel and at intervals, and the angle between the extending direction of the metal strips and the length direction of the transmission axis of the second polarizer is in the range of -3 degrees to 3 degrees; The spacing between two adjacent metal strips is a first spacing, the spacing between two side walls of the same opening along the arrangement direction of the multiple metal strips is a second spacing, and the first spacing is smaller than the second spacing.

5. The display panel according to claim 4, wherein: A ratio of the first interval to the second interval is in a range of 2% to 8.75%.

6. The display panel according to claim 4, wherein: The third polarizer further includes a plurality of flattened portions, wherein the flattened portions are filled between two adjacent metal strips, and a side of the flattened portions away from the first polarizer is flush with a side of the metal strip away from the first polarizer.

7. The display panel according to any one of claims 3 to 6, characterized in that: The thin film transistor device layer includes a plurality of thin film transistors; The array substrate further includes: A second insulating layer is disposed on a side of the first insulating layer close to the alignment layer, and the third polarizer is located between the second insulating layer and the first insulating layer; A plurality of pixel electrodes are provided on a side of the second insulating layer close to the alignment layer, and the pixel electrodes are electrically connected to the thin film transistor; a third insulating layer, disposed on a side of the second insulating layer close to the alignment layer and covering the plurality of pixel electrodes; and The common electrode is arranged on a side of the third insulating layer close to the alignment layer.

8. The display panel according to any one of claims 1 to 6, characterized in that: The thin film transistor device layer includes a plurality of thin film transistors; The array substrate further includes: A plurality of pixel electrodes are provided on a side of the color filter layer close to the alignment layer, and the pixel electrodes are electrically connected to the thin film transistor; A third insulating layer is provided on a side of the pixel electrode close to the alignment layer; a common electrode, disposed on a side of the third insulating layer close to the alignment layer; and a fourth insulating layer, disposed on a side of the common electrode close to the alignment layer; Wherein, the third polarizer is located between the fourth insulating layer and the alignment layer.

9. The display panel according to any one of claims 1 to 6, characterized in that: The transmission axis of the third polarizer is perpendicular to the transmission axis of the second polarizer, and the transmission axis of the third polarizer is parallel to the transmission axis of the first polarizer.

10. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 9.

Images