WO2017181732A1 - 显示面板及其制作方法、以及显示装置 - Google Patents

显示面板及其制作方法、以及显示装置 Download PDF

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Publication number
WO2017181732A1
WO2017181732A1 PCT/CN2017/000042 CN2017000042W WO2017181732A1 WO 2017181732 A1 WO2017181732 A1 WO 2017181732A1 CN 2017000042 W CN2017000042 W CN 2017000042W WO 2017181732 A1 WO2017181732 A1 WO 2017181732A1
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Prior art keywords
polarizer
liquid crystal
substrate
display panel
crystal molecules
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PCT/CN2017/000042
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English (en)
French (fr)
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王英涛
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京东方科技集团股份有限公司
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Priority to US15/535,427 priority Critical patent/US10324332B2/en
Publication of WO2017181732A1 publication Critical patent/WO2017181732A1/zh

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    • 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
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    • 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
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    • G02F1/1333—Constructional arrangements; Manufacturing methods
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    • 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 
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    • 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
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    • 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
    • G02F1/133528—Polarisers
    • G02F1/133531—Polarisers characterised by the arrangement of polariser or analyser axes
    • 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
    • G02F1/133528—Polarisers
    • G02F1/133538—Polarisers with spatial distribution of the polarisation direction
    • 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
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    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133738—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers for homogeneous alignment
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
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    • G—PHYSICS
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    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
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    • G02F1/133788—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by light irradiation, e.g. linearly polarised light photo-polymerisation
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    • G02F2201/123—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode pixel

Definitions

  • Embodiments of the present disclosure relate to the field of display technologies, and in particular, to a display panel, a method of fabricating the same, and a display device.
  • TFT-LCD Thin Film Transistor Liquid Crystal Display
  • FPD main flat panel display
  • the TFT-LCD includes a first substrate (array substrate), a second substrate (color film substrate), and a liquid crystal layer disposed between the first substrate and the second substrate, wherein the first substrate is provided with a thin film transistor array, and the second substrate A color filter and a black matrix are provided thereon.
  • An upper polarizer is disposed on the second substrate, and a lower polarizer is disposed on the first substrate, wherein a transmission axis of the upper polarizer and the lower polarizer is orthogonal.
  • the TFT-LCD can be classified into a vertical electric field type and a horizontal electric field type.
  • the vertical electric field type TFT-LCD forms a pixel electrode on the first substrate, and forms a common electrode on the second substrate, and the horizontal electric field type TFT-LCD simultaneously forms the pixel electrode and the common electrode on the array substrate.
  • Embodiments of the present disclosure provide a display panel, a manufacturing method thereof, and a display device, which are capable of improving image quality differences at different azimuth angles and improving image quality uniformity.
  • a display panel including disposed opposite to each other a first substrate and a second substrate; a first polarizer disposed on the first substrate, and a second polarizer disposed on the second substrate, wherein the display panel includes a plurality of pixels,
  • the first polarizer and the second polarizer have a plurality of transmission axes, and the directions of the transmission axes of the first polarizer or the second polarizer corresponding to two adjacent pixels are different and identical
  • the direction of the transmission axis of the first polarizer corresponding to the pixel and the direction of the corresponding transmission axis of the second polarizer are perpendicular to each other.
  • the display panel further includes a liquid crystal layer disposed between the first substrate and the second substrate, and liquid crystal molecules corresponding to respective pixels in the liquid crystal layer are dependent on the first polarizer or The direction of the respective pass axis of the second polarizer is oriented such that the liquid crystal molecules in the same layer have a plurality of different orientations.
  • the orientation of the liquid crystal molecules in the liquid crystal layer coincides with the direction of the transmission axis of the first polarizer or the second polarizer.
  • an orientation of a layer of liquid crystal molecules closest to the first polarizer in the liquid crystal layer and a pass axis of one of the first polarizer and the second polarizer The directions are uniform, and the orientation of one layer of liquid crystal molecules closest to the second polarizer in the liquid crystal layer is consistent with the direction of the transmission axis of the other of the first polarizer and the second polarizer .
  • the liquid crystal molecules in the liquid crystal layer are oriented by a photo-alignment technique.
  • the pixel includes one or more of three sub-pixels, R, G, and B.
  • the first polarizer is disposed on a side of the first substrate adjacent to the liquid crystal layer; the second polarizer is disposed on a side of the second substrate adjacent to the liquid crystal layer .
  • the first polarizer and the second polarizer are wire grid polarizers.
  • the angle between the direction of the transmission axis of the first polarizer and the second polarizer corresponding to two adjacent pixels is greater than 0° and less than or equal to 15°.
  • a plurality of pixel electrodes are further included, the direction of which is configured to maintain a predetermined angle with respect to the orientation of the liquid crystal molecules in the liquid crystal layer.
  • the angle of the direction of the pixel electrode and the orientation of the liquid crystal molecules is 0°-7°.
  • the display panel further includes a thin film transistor array disposed on a side of the first substrate and the second substrate adjacent to the liquid crystal layer, and disposed on the first substrate and a color filter and a black matrix of the other of the second substrates adjacent to a side of the liquid crystal layer.
  • the first polarizer and the second polarizer are disposed to have a plurality of transmission axes of different directions, and the first polarizer or the second polarizer corresponding to the adjacent pixels transmits light.
  • the directions of the axes are different.
  • a display device includes any one of the foregoing display panels and a backlight module disposed under the display panel.
  • the display device when the observer observes at different azimuth angles, the observed picture effects are substantially the same, and thus the problem of large difference in image quality observed by different azimuth angles can be improved.
  • a method of fabricating a display panel the display panel includes a plurality of pixels, and the method includes:
  • first polarizer and a second polarizer Forming a first polarizer and a second polarizer on the first substrate and the second substrate, respectively, wherein the first polarizer and the second polarizer have a plurality of transmission axes adjacent to each other a direction of a transmission axis of the first polarizer or the second polarizer corresponding to two pixels, and a transmission axis of the first polarizer corresponding to the same pixel and a second polarizer The directions of the corresponding transmission axes are perpendicular to each other;
  • the first substrate and the second substrate are paired with a cassette.
  • the method further includes: disposing a liquid crystal layer between the first substrate and the second substrate; and according to a transmission axis of the first polarizer or the second polarizer The direction aligns the liquid crystal molecules in the liquid crystal layer such that the liquid crystal molecules located in the same layer have a plurality of different orientations.
  • orienting the liquid crystal molecules in the liquid crystal layer includes: orienting liquid crystal molecules in the liquid crystal layer such that the alignment of the liquid crystal molecules is the same for the same pixel The direction of the transmission axis of the first polarizer or the second polarizer is uniform.
  • orienting the liquid crystal molecules in the liquid crystal layer includes: orienting liquid crystal molecules in the liquid crystal layer such that, for the same pixel, the liquid crystal layer is closest to the first polarizer a layer of liquid crystal molecules having an orientation that coincides with a direction of a transmission axis of one of the first polarizer and the second polarizer, and a layer of liquid crystal molecules closest to the second polarizer in the liquid crystal layer The orientation is consistent with the direction of the transmission axis of the other of the first polarizer and the second polarizer.
  • the angle between the direction of the transmission axis of the first polarizer and the second polarizer corresponding to two adjacent pixels is greater than 0° and less than or equal to 15°.
  • the liquid crystal molecules in the liquid crystal layer are oriented using a photo-alignment technique.
  • the method further includes forming a plurality of pixel electrodes on the first substrate or the second substrate, wherein
  • the angle between the direction of the pixel electrode and the orientation of the liquid crystal molecules is 0°-7°.
  • the first polarizer and the second polarizer are disposed to have a plurality of different directions of the transmission axis, and the adjacent pixels correspond to the first polarizer or the second polarizer
  • the direction of the transmission axis is different.
  • Figure 1 shows schematically the various azimuths of the observer
  • FIG. 2 schematically illustrates a cross-sectional view of a display panel provided in accordance with a first embodiment of the present disclosure
  • 3a and 3b schematically illustrate the directions of the gate lines of the first polarizer and the second polarizer in the embodiment of the present disclosure, wherein the directions of the transmission axes of the first polarizer and the second polarizer are perpendicular to the direction of the gate lines ;
  • FIG. 4 schematically illustrates a cross-sectional view of a display panel provided in accordance with a second embodiment of the present disclosure
  • FIG. 5 schematically illustrates a cross-sectional view of a display panel provided in accordance with a third embodiment of the present disclosure
  • FIG. 6 schematically illustrates a cross-sectional view of a display device provided in accordance with an embodiment of the present disclosure
  • FIG. 7 illustrates a flow chart of a method of fabricating a display panel provided in accordance with an embodiment of the present disclosure.
  • the directions of the transmission axes of the upper polarizer and the lower polarizer of the TFT-LCD are entirely perpendicular to each other.
  • the azimuth observed angle
  • the image quality of the side view and the front view are largely different, especially at 45° and 135° as shown in FIG.
  • the picture quality was the worst. This is mainly due to the optical properties of the liquid crystal molecules.
  • the refractive index and optical path of the liquid crystal molecules are different, and the degree of rotation of the liquid crystal molecules to the light is also different, so that the upper polarizer and the lower polarizer have different occlusions of light at different azimuth angles. effect. From the perspective of the observer, when the side is observed, light leakage occurs, which causes a problem of uneven image quality in each orientation.
  • An embodiment of the present disclosure provides a display panel including: a first substrate and a second substrate disposed opposite to each other; a liquid crystal layer disposed between the first substrate and the second substrate; and a first disposed on the first substrate a polarizer, and a second polarizer disposed on the second substrate.
  • the first polarizer and the second polarizer have a plurality of transmission axes, and the directions of the transmission axes of the first polarizer or the second polarizer corresponding to two adjacent pixels are different, and the same as the same pixel
  • the direction of the transmission axis of the first polarizer and the corresponding transmission axis of the second polarizer are perpendicular to each other.
  • the liquid crystal layer includes a plurality of liquid crystal molecules, and when the first polarizer and the second polarizer are disposed to have a plurality of transmission axes, the orientation of the liquid crystal molecules in the liquid crystal layer can be adaptively adjusted. So that the liquid crystal molecules located in the same layer have different orientations. As will be described in detail below, the orientation of the liquid crystal molecules is different due to the different implementation principles of the different mode display panels. The relationship of the direction of the transmission axis of the polarizer is also different.
  • the first polarizer and the second polarizer are disposed to have a plurality of transmission axes of different directions, and the first polarizer or the second polarizer corresponding to the adjacent pixels transmits light.
  • the directions of the axes are different, that is, each pixel corresponds to the direction of one transmission axis, and the directions of the transmission axes corresponding to the adjacent two pixels are different.
  • orientation of liquid crystal molecules means an orientation when no voltage is applied to liquid crystal molecules.
  • direction of the transmission axis refers to the polarization direction of light after natural light passes through the polarizer.
  • FIG. 2 schematically illustrates a cross-sectional view of a display panel 200 provided in accordance with a first embodiment of the present disclosure.
  • the display panel 200 includes at least a first substrate 201 (lower substrate) and a second substrate 202 (upper substrate) disposed opposite to each other, and a liquid crystal layer 203 disposed between the first substrate 201 and the second substrate 202.
  • a first polarizer 204 lower polarizer
  • a second polarizer 205 disposed on a side of the second substrate 202 adjacent to the liquid crystal layer 203 (on Polarizer).
  • the first polarizer 204 and the second polarizer 205 each have a plurality of different transmission axis directions, and the two polarization directions 204, 205 corresponding to the same pixel are perpendicular to the transmission axis direction, and the adjacent two pixels correspond to The direction of the transmission axis of the first polarizer 204 or the second polarizer 205 is different.
  • the first polarizer 204 and the second polarizer 205 have a plurality of different directions of the transmission axis in the entire panel, which can prevent the observer from obtaining a better picture when facing the panel, in the side view panel. A poor picture is obtained, so the observed image quality differences at different azimuth angles can be improved. Further, in the present embodiment, by disposing the first polarizer 204 and the second polarizer 205 on the inner sides of the first substrate 201 and the second substrate 202, the problem of L0mura failure of the display panel can be reduced, and at the same time, it can be further reduced Light leaks.
  • the display panel 200 further includes a TFT array layer 206 formed of a plurality of thin film transistors (TFTs) formed on the first substrate. More specifically, As shown in FIG. 2, a TFT array layer is formed on a side of the first polarizer adjacent to the liquid crystal layer, and an insulating layer 208 is disposed between the TFT array layer and the first polarizer.
  • the display panel 200 further includes a color film layer 207 disposed on the second substrate.
  • the color film layer 207 is disposed on a side of the second polarizer adjacent to the liquid crystal layer, and an insulating layer 208 is disposed between the color film layer 207 and the second polarizer 205, wherein the color film layer 207 is provided with Color filter and black matrix BM.
  • first polarizer 204 and the second polarizer 205 may be Wire Grid Polarizers (WGPs).
  • WGPs Wire Grid Polarizers
  • the wire grid polarizer can be a metal wire grid polarizer comprising a metallic material or metal particles. It should be noted that the shaded portions of the first polarizer and the second polarizer shown in FIG. 2 are the gate lines of the wire grid, and do not indicate the direction of the transmission axis of the polarizer. Actually, for the metal wire grid polarization The direction of the transmission axis is perpendicular to the direction of the gate line.
  • a polarizer made of a polyvinyl alcohol (PVA) film is generally used.
  • PVA polyvinyl alcohol
  • a wire grid polarizer comprising a metal material or metal particles is used.
  • a wire grid polarizer having a plurality of transmission axis directions may be formed by any of the following methods:
  • a metal thin film may be formed using a metal target, and then a wire grid polarizer having a plurality of transmission axis directions is formed by an etching process, wherein a transmission axis direction is perpendicular to a direction of a wire grid on the wire grid polarizer;
  • the above polymer monomer may include an acrylic monomer such as methyl acrylate, ethyl acrylate, n-butyl acrylate, n-butyl methacrylate or the like.
  • acrylic monomer such as methyl acrylate, ethyl acrylate, n-butyl acrylate, n-butyl methacrylate or the like.
  • other embodiments are also possible.
  • the first polarizer 204 and the second polarizer 205 can have at least 3 different directions of transmission axes.
  • the angle between the direction of the transmission axis of the first polarizer 204 and the second polarizer 205 corresponding to two adjacent pixels may be set to be greater than 0° and less than or equal to 15°, optionally, Can be set to 5°.
  • 3a and 3b schematically illustrate the directions of the gate lines of the first polarizer and the second polarizer in the embodiment of the present disclosure, wherein the directions of the transmission axes of the first polarizer and the second polarizer are perpendicular to the direction of the gate lines . As shown in FIG.
  • the direction of the gate line of the first polarizer may include 0°, 15°, 30°, 45°, 60°, 75°, 90°, and correspondingly, the transmission axis direction of the first polarizer Including 90°, 105°, 120°, 135°, 150°, 165°, 180°.
  • the direction of the gate line of the second polarizer includes 90°, 105°, 120°, 135°, 150°, 165°, 180°, and accordingly, the transmission axis direction of the second polarizer includes 0°, 15°, 30°, 45°, 60°, 75°, 90°. It will be appreciated that other arrangements of the directions of the transmission axes of the first polarizer and the second polarizer are also possible.
  • the first polarizer 204 and the second polarizer 205 are disposed to have a plurality of different transmission axis directions, respectively.
  • the liquid crystal molecules corresponding to the respective pixels in the liquid crystal layer 203 may be configured according to the first polarizer 204 or
  • the direction of the transmission axis of the second polarizer 205 is oriented such that the orientations of the liquid crystal molecules located in the same layer (in the same plane) are different.
  • the liquid crystal molecules in the liquid crystal layer 203 may be oriented in a direction parallel to the transmission axis of the first polarizer 204 (ie, perpendicular to the wire grid direction of the first polarizer 204).
  • the liquid crystal layer 203 is The orientation of the liquid crystal molecules corresponding to the pixel R is also parallel to the plane of the paper. This arrangement allows liquid crystal molecules located in the same layer (the same plane) to have different orientations. When the observer faces the screen and the side view screen, the difference in the perceived light leakage is not large. With this setting, it is possible to improve the problem that the image quality difference between the different azimuth observations is large.
  • the liquid crystal molecules can be aligned by an optical alignment (OA) technique.
  • OA optical alignment
  • the basic principle of the photo-alignment technique is to align the liquid crystal molecules by utilizing the anisotropy produced by the photochemical reaction of the ultraviolet photopolymer monomer material.
  • a photosensitive polymer film may be coated on the substrate and then irradiated with ultraviolet polarized light. Only the photosensitive group parallel to the polarization direction of the polarized light undergoes a photochemical reaction, and anisotropy is generated on the oriented film to induce liquid crystal molecular orientation. . It will be appreciated that other orientation techniques are also possible.
  • the display panel further includes a common electrode and a pixel electrode (not shown) for controlling the rotation of the liquid crystal molecules.
  • the common electrode and the pixel electrode may be a surface electrode or a pixel electrode.
  • the orientation of the pixel electrode can be appropriately adjusted so that the direction of the pixel electrode is configured to maintain the orientation of the liquid crystal molecules in the liquid crystal layer 203.
  • the angle of the direction of the pixel electrode and the orientation of the liquid crystal molecules may be set to be about 0°-7°.
  • the pixel electrode is a strip electrode
  • the common electrode is a surface electrode
  • the pixel electrode and the common electrode are both disposed on the first substrate 201 side.
  • the liquid crystal molecules may be oriented to coincide with the direction of the transmission axis of the first polarizer, and the direction of the pixel electrode is set to maintain a predetermined angle with the orientation of the liquid crystal molecules in the liquid crystal layer 203 to accommodate Adjustment of the orientation of liquid crystal molecules.
  • both the pixel electrode and the common electrode are strip electrodes, and the pixel electrode and the common electrode are both disposed on the side of the first substrate 201.
  • liquid crystal molecules can also be oriented to coincide with the direction of the transmission axis of the first polarizer, and the directions of the pixel electrode and the common electrode are set to remain predetermined with respect to the orientation of the liquid crystal molecules in the liquid crystal layer 203. Angle to accommodate adjustment of the orientation of the liquid crystal molecules.
  • orientation of the liquid crystal molecules and the direction of the pixel electrode are not limited to only this Two modes, other modes that can utilize this orientation of liquid crystal molecules and the orientation of the pixel electrodes are also possible.
  • the pixels described in the embodiments of the present disclosure are pixels in a broad sense, which may include one or more of three sub-pixels of R, G, and B.
  • the directions of the transmission axes of the first polarizers corresponding to the two adjacent sub-pixels are different, and the transmission axis of the first polarizer corresponding to the same sub-pixel and the corresponding transmission axis of the second polarizer The directions are perpendicular to each other.
  • the corresponding transmission axis of the polarizer between the sub-pixel and the sub-pixel is different, and the problem of large difference in image quality observed at different azimuth angles can be further improved.
  • adjacent two pixels formed by mixing three sub-pixels of R, G, B
  • the direction of the transmission axis and the corresponding transmission axis of the second polarizer are perpendicular to each other.
  • the TFT array layer 206 is formed on the first substrate, and the color film layer 207 is disposed on the second substrate. It will be appreciated that it is also possible to form the TFT array layer 206 on the second substrate and to provide the color film layer 207 on the first substrate. In this case, it is necessary to adaptively adjust the orientation of the liquid crystal molecules and the direction of the pixel electrodes.
  • FIG. 4 schematically illustrates a cross-sectional view of a display panel 200 provided in accordance with a second embodiment of the present disclosure.
  • the same reference numerals are used for the same components as those of the first embodiment, and the explanation of the same components in the first embodiment is also applicable to the present embodiment, and the repeated description will be omitted.
  • the structure of the display panel 200 according to the second embodiment is different from that of the display panel 200 of the first embodiment shown in FIG. 2, in that the orientation of the liquid crystal molecules and the configuration of the electrodes are different from those of the first embodiment.
  • a layer of liquid crystal molecules closest to the first polarizer 204 in the liquid crystal layer 203 is oriented to coincide with the direction of the transmission axis of the first polarizer 204, and the liquid crystal layer 203
  • a layer of liquid crystal molecules closest to the second polarizer 205 is oriented to coincide with the direction of the transmission axis of the second polarizer 205.
  • the direction of the transmission axis of the first polarizer 204 corresponding to the pixel R is horizontal, and the liquid crystal molecules close to the first polarizer 204 are oriented in the horizontal direction ( Parallel to the paper surface, and the direction of the transmission axis of the second polarizer 205 corresponding to the pixel R (perpendicular to the direction of the grid line in the figure) is perpendicular to In the direction of the paper, the liquid crystal molecules near the second polarizer 205 are oriented in a direction perpendicular to the plane of the paper.
  • the alignment rules of other pixels are similar to the pixel R.
  • a pixel electrode and a common electrode are disposed on the first substrate and the second substrate to generate a vertical electric field for driving the rotation of the liquid crystal molecules.
  • the remaining configuration is basically the same as that of the first embodiment.
  • the pixel electrode and the common electrode are both surface electrodes, and are respectively located on the first substrate and the second substrate, and
  • the liquid crystal molecules are oriented to be spiral in one pixel, and therefore, the liquid crystal molecules can be oriented in the manner of the present embodiment such that liquid crystal molecules in the same layer (the same plane) have different orientations.
  • FIG. 5 schematically illustrates a cross-sectional view of a display panel 200 provided in accordance with a third embodiment of the present disclosure.
  • the same reference numerals are used for the same components as those of the first embodiment, and the explanation of the same components in the first embodiment is also applicable to the present embodiment, and the repeated description will be omitted.
  • the structure of the display panel 200 according to the third embodiment is different from that of the display panel 200 of the first embodiment shown in FIG. 2, which differs in the positions of the first polarizer 204 and the second polarizer 205.
  • the first polarizer 204 is disposed on a side of the first substrate 201 remote from the liquid crystal layer 203
  • the second polarizer 205 is disposed on the second substrate 202 away from the liquid crystal layer 203.
  • the remaining configuration is basically the same as that of the first embodiment.
  • an embodiment of the present disclosure further provides a display device including any one of the display panels 200 provided in the first to third embodiments, and a backlight module 300 disposed under the display panel 200 . Since the display device provided by the present embodiment includes the display panel provided by the above embodiment, the explanation of the same components in the above embodiment is also applicable to the present embodiment, and the repeated description will be omitted.
  • any backlight module well known in the art such as an edge-lit backlight module and a direct-lit backlight module, can be used.
  • the first polarizer and the second polarizer are disposed to have a plurality of different directions of the transmission axis, and the adjacent pixels correspond to the first polarizer or the second polarizer
  • the direction of the transmission axis is different.
  • Embodiments of the present disclosure also provide a method of fabricating a display panel. Since the manufacturing method provided in this embodiment is used to manufacture the display panel in the above embodiment, the explanation of the same components in the above embodiment is also applicable to the present embodiment, and the repeated description will be omitted.
  • the manufacturing method of the display panel includes:
  • S701 forming a first substrate and a second substrate, respectively, wherein the first substrate and the second substrate may be made of glass or plastic materials;
  • S702 forming a first polarizer and a second polarizer on the first substrate and the second substrate, respectively, wherein the first polarizer and the second polarizer have a plurality of transmission axes, and the corresponding two pixels correspond to the first The direction of the transmission axis of a polarizer or a second polarizer is different, and the direction of the transmission axis of the first polarizer corresponding to the same pixel and the direction of the corresponding transmission axis of the second polarizer are perpendicular to each other;
  • the above manufacturing method further includes: disposing a liquid crystal layer between the first substrate and the second substrate; and aligning the liquid crystal in the liquid crystal layer according to a direction of a light transmission axis of the first polarizer or the second polarizer The molecules are oriented such that the liquid crystal molecules in the same layer have a plurality of different orientations.
  • orienting the liquid crystal molecules in the liquid crystal layer comprises: orienting liquid crystal molecules in the liquid crystal layer such that the alignment of the liquid crystal molecules with the first polarizer or the second polarizer is the same pixel The direction of the transmission axis is the same.
  • orienting the liquid crystal molecules in the liquid crystal layer comprises: orienting liquid crystal molecules in the liquid crystal layer such that the alignment of a liquid crystal molecule closest to the first polarizer in the liquid crystal layer is the same for the same pixel
  • the direction of the transmission axis of one of the first polarizer and the second polarizer is uniform, and the orientation of one layer of liquid crystal molecules closest to the second polarizer in the liquid crystal layer is different from that of the first polarizer and the second polarizer
  • the direction of one of the transmission axes is the same.
  • the angle between the first polarizer and the second polarizer corresponding to the adjacent two pixels is greater than 0° and less than or equal to 15°.
  • the method further includes forming more on the first substrate or the second substrate a pixel electrode, wherein a direction of the pixel electrode is maintained at a predetermined angle with respect to an orientation of liquid crystal molecules in the liquid crystal layer.
  • the angle between the direction of the pixel electrode and the orientation of the liquid crystal molecules is about 0°-7°.
  • the display panel may be any one of an FFS mode, an IPS mode, a TN mode, and a VA (Vertical Alignment) mode.
  • an element or layer when an element or layer is referred to as being “on” another element or layer, it may be directly on the other element or layer, or an element or layer may be present; likewise, when the element or layer is When the other element or layer is "under”, it may be directly under the other element or layer, or there may be at least one intermediate element or layer; when the element or layer is referred to as being between the two or two layers It may be a single element or layer between two or two layers, or more than one intermediate element or layer may be present.

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Abstract

一种显示面板(200)及其制作方法、以及显示装置，所述显示面板(200)包括彼此相对设置的第一基板(201)和第二基板(202)；设置在所述第一基板(201)上的第一偏振器(204)，以及设置在所述第二基板(202)上的第二偏振器(205)，其中，所述显示面板(200)包括多个像素，所述第一偏振器(204)和所述第二偏振器(205)两者都具有多个透光轴，相邻两个像素对应的所述第一偏振器(204)或所述第二偏振器(205)的透光轴的方向不同，并且与同一像素对应的所述第一偏振器(204)的透光轴与所述第二偏振器(205)的相应透光轴的方向彼此垂直。该显示面板(200)能够改善不同方位观察的画质不均的问题。

Description

显示面板及其制作方法、以及显示装置
相关申请的交叉引用
本申请要求于2016年04月22日递交的中国专利申请第201610255493.2号的优先权和权益，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。
技术领域
本公开的实施例涉及显示技术领域，尤其涉及一种显示面板及其制作方法、以及显示装置。
背景技术
薄膜晶体管液晶显示装置(Thin Film Transistor Liquid Crystal Display，简称TFT-LCD)是一种主要的平板显示装置(Flat Panel Display，FPD)。因其具有体积小、功耗低、无辐射以及制作成本相对较低等特点，而越来越多地应用于高性能显示领域当中。
TFT-LCD包括第一基板(阵列基板)、第二基板(彩膜基板)和设置在第一基板和第二基板之间的液晶层，其中第一基板上设置有薄膜晶体管阵列，第二基板上设置有彩色滤光片和黑矩阵。在第二基板上设置有上偏振器，在第一基板上设置有下偏振器，其中上偏振器和下偏振器的透光轴正交。根据驱动液晶的电场的方向不同，TFT-LCD可分为垂直电场型和水平电场型。其中垂直电场型TFT-LCD在第一基板上形成像素电极，在第二基板上形成公共电极，而水平电场型TFT-LCD在阵列基板上同时形成像素电极和公共电极。
发明内容
本公开实施例提供了一种显示面板及其制造方法和显示装置，其能够改善不同方位角的画质差异，提高画质均匀性。
根据本公开的一个实施例，提供一种显示面板，包括彼此相对设置的 第一基板和第二基板；设置在所述第一基板上的第一偏振器，以及设置在所述第二基板的上的第二偏振器，其中，所述显示面板包括多个像素，所述第一偏振器和所述第二偏振器具有多个透光轴，相邻两个像素对应的所述第一偏振器或所述第二偏振器的透光轴的方向不同，并且与同一像素对应的所述第一偏振器的透光轴与所述第二偏振器的相应透光轴的方向彼此垂直。
在一个示例中，所述显示面板还包括设置在所述第一基板和所述第二基板之间的液晶层，所述液晶层中各个像素对应的液晶分子依赖于所述第一偏振器或所述第二偏振器的相应透光轴的方向被取向，以使位于同一层的所述液晶分子具有多种不同的取向。
在一个示例中，对于同一像素，所述液晶层中的液晶分子的取向与所述第一偏振器或所述第二偏振器的透光轴的方向一致。
在一个示例中，对于同一像素，所述液晶层中最靠近所述第一偏振器的一层液晶分子的取向与所述第一偏振器和所述第二偏振器中的一个的透光轴的方向一致，并且所述液晶层中最靠近所述第二偏振器的一层液晶分子的取向与所述第一偏振器和所述第二偏振器中的另一个的透光轴的方向一致。
在一个示例中，所述液晶层中的所述液晶分子通过光取向技术来取向。
在一个示例中，所述像素包括R、G、B三种亚像素中的一种或多种。
在一个示例中，所述第一偏振器设置在所述第一基板的靠近所述液晶层的一侧；所述第二偏振器设置在所述第二基板的靠近所述液晶层的一侧。
在一个示例中，所述第一偏振器和所述第二偏振器为线栅偏振器。
在一个示例中，相邻两个像素对应的所述第一偏振器和所述第二偏振片的透光轴方向的夹角为大于0°且小于或等于15°。
在一个示例中，还包括多个像素电极，其方向被配置为与所述液晶层中的液晶分子的取向保持预定的角度。
在一个示例中，所述像素电极的方向与所述液晶分子的取向的夹角为0°-7°。
在一个示例中，所述显示面板还包括设置在所述第一基板和所述第二基板中的一个的靠近所述液晶层的一侧的薄膜晶体管阵列，以及设置在所述第一基板和所述第二基板中的另一个的靠近所述液晶层的一侧的彩色滤光片和黑矩阵。
在本公开实施例提供的显示面板中，第一偏振器和第二偏振器设置为具有多个不同方向的透光轴，且相邻像素对应的第一偏振器或第二偏振器的透光轴的方向不同，当观察者在不同方位角处观察时，观察到的画面效果基本一致，因此可以改善不同方位角观察的画质差异较大的问题。
根据本公开的另一个实施例，提供一种显示装置包括前述任意一种显示面板和设置在所述显示面板下方的背光模组。
根据本公开实施例提供的显示装置中，当观察者在不同方位角处观察时，观察到的画面效果基本一致，因此可以改善不同方位角观察的画质差异较大的问题。
根据本公开的又一个实施例，提供一种显示面板的制作方法，所述显示面板包括多个像素，所述方法包括：
分别形成第一基板和第二基板；
在所述第一基板上和所述第二基板上分别形成第一偏振器和第二偏振器，其中，所述第一偏振器和所述第二偏振器具有多个透光轴，相邻两个像素对应的所述第一偏振器或所述第二偏振器的透光轴的方向不同，并且与同一像素对应的所述第一偏振器的透光轴与所述第二偏振器的相应透光轴的方向彼此垂直；
将所述第一基板和所述第二基板对盒。
在一个示例中，所述方法还包括：将液晶层设置在所述第一基板和所述第二基板之间；以及根据所述第一偏振器或所述第二偏振器的透光轴的方向对所述液晶层中的液晶分子进行取向，以使位于同一层的所述液晶分子具有多种不同的取向。
在一个示例中，对所述液晶层中的液晶分子进行取向包括：对所述液晶层中的液晶分子进行取向，以使对于同一像素，所述液晶分子的取向与 所述第一偏振器或所述第二偏振器的透光轴的方向一致。
在一个示例中，对所述液晶层中的液晶分子进行取向包括：对所述液晶层中的液晶分子进行取向，以使对于同一像素，所述液晶层中最靠近所述第一偏振器的一层液晶分子的取向与所述第一偏振器和所述第二偏振器中的一个的透光轴的方向一致，并且所述液晶层中最靠近所述第二偏振器的一层液晶分子的取向与所述第一偏振器和所述第二偏振器中的另一个的透光轴的方向一致。
在一个示例中，相邻两个像素对应的所述第一偏振器和所述第二偏振片的透光轴方向的夹角为大于0°且小于或等于15°。
在一个示例中，采用光取向技术对所述液晶层中的所述液晶分子取向。
在一个示例中，所述方法还包括：在所述第一基板上或所述第二基板形成多个像素电极，其中，
所述像素电极的方向与所述液晶分子的取向的夹角为0°-7°。
根据本公开实施例提供的方法制作的显示面板，第一偏振器和第二偏振器设置为具有多个不同方向的透光轴，且相邻像素对应的第一偏振器或第二偏振器的透光轴的方向不同，当观察者在不同方位角处观察时，观察到的画面效果基本一致，因此可以改善不同方位角观察的画质差异较大的问题。
附图说明
为了更清楚地说明本公开实施例中的技术方案，下面将对本公开实施例描述中所需要使用的附图作简单地介绍。显而易见地，本文中描述的附图仅用于对所选择的实施例的说明的目的，并不是所有可能的实施方式，并且不旨在限制本申请的范围，其中：
图1示意性示出观察者的各个方位角；
图2示意性示出根据本公开的第一实施例提供的显示面板的截面图；
图3a和3b示意性示出本公开实施例中第一偏振器和第二偏振器的栅线的方向，其中第一偏振器和第二偏振器的透光轴的方向与栅线的方向垂直；
图4示意性示出根据本公开的第二实施例提供的显示面板的截面图；
图5示意性示出根据本公开的第三实施例提供的显示面板的截面图；
图6示意性示出根据本公开的实施例提供的显示装置的截面图；
图7示出根据本公开实施例提供的显示面板的制作方法的流程图。
贯穿这些附图的各个视图，相应的参考编号指示相应的部件或特征。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，现将参照附图更全面地描述示例性的实施例。
如在本文中已经描述的，TFT-LCD的上偏振器和下偏振器的透光轴方向整体上是彼此垂直的。在观察显示器期间，当从显示器的正面往侧面变换方位角(观察角)时，发现在侧面观察与正面观察的画质具有较大差异，尤其是在如图1所示的45°、135°、225°以及315°处观察时，画质最差。这主要是由于液晶分子的光学特性造成的。具体地，在不同方位角处，液晶分子的折射率和光程不同，液晶分子对光的旋转的程度也不同，因此在不同的方位角处，上偏振器和下偏振器对光具有不同的遮挡效果。从观察者的角度看，在侧面观察时，会出现漏光的现象，因此导致各个方位画质不均匀的问题。
本公开的实施例提供一种显示面板，其包括：彼此相对设置的第一基板和第二基板；设置在第一基板和第二基板之间的液晶层；设置在第一基板上的第一偏振器，以及设置在第二基板的上的第二偏振器。第一偏振器和第二偏振器具有多个透光轴，相邻两个像素对应的所述第一偏振器或第二偏振器的透光轴的方向不同，并且与同一像素对应的所述第一偏振器的透光轴与所述第二偏振器的相应透光轴的方向彼此垂直。
应当理解，所述液晶层中包括多层液晶分子，当第一偏振器和第二偏振器被设置为具有多个透光轴时，可以将液晶层中的液晶分子的取向进行适应性的调整，以使位于同一层的液晶分子具有不同的取向。如在下文将详细描述的，由于不同模式显示面板的实现原理不同，液晶分子的取向与 偏振器的透光轴的方向的关系也不同。
在该实施例中，如上所述，将第一偏振器和第二偏振器设置为具有多个不同方向的透光轴，且相邻像素对应的第一偏振器或第二偏振器的透光轴的方向不同，也就是说，每个像素对应一个透光轴的方向，并且相邻两个像素对应的透光轴的方向不同。当观察者在不同方位角处观察时，观察到的画面效果基本一致，因此可以改善不同方位角观察的画质差异较大的问题。
需要说明的是，在本文的公开中，“液晶分子的取向”是指在未对液晶分子施加电压时的取向。此外，“透光轴的方向”是指自然光经过偏振器后光的偏振方向。
图2示意性示出根据本公开的第一实施例提供的显示面板200的截面图。
如图2所示，显示面板200至少包括彼此相对设置的第一基板201(下基板)和第二基板202(上基板)、设置在第一基板201和第二基板202之间的液晶层203、设置在第一基板201的靠近液晶层203的一侧的第一偏振器204(下偏振器)，以及设置在第二基板202的靠近液晶层203的一侧的第二偏振器205(上偏振器)。第一偏振器204和第二偏振器205都具有多个不同的透光轴方向，并且与同一像素对应的两个偏振器204、205的透光轴方向垂直，相邻的两个像素对应的第一偏振器204或第二偏振器205的透光轴方向不同。
通过这种配置，在整个面板中，第一偏振器204和第二偏振器205具有多个不同方向的透光轴，能够避免观察者在正视面板时获得较好的画面，在侧视面板时获得较差的画面，因此可以改善不同方位角的观察到的画质差异。此外，在本实施例中，通过将第一偏振器204和第二偏振器205设置在第一基板201和第二基板202的内侧，可以降低显示面板的L0mura不良的问题，同时还可以进一步减少漏光。
在本实施例中，显示面板200还包括由多个薄膜晶体管(TFT)形成的TFT阵列层206，该TFT阵列层206形成在第一基板上。更具体地， 如图2所示，TFT阵列层形成在第一偏振器的靠近液晶层的一侧，并且在TFT阵列层和第一偏振器之间设置有绝缘层208。显示面板200还包括设置在第二基板上的彩膜层207。更具体地，彩膜层207设置在第二偏振器的靠近液晶层的一侧，并且在彩膜层207和第二偏振器205之间设置有绝缘层208，其中，彩膜层207设置有彩色滤光片和黑矩阵BM。
在本实施例中，第一偏振器204和第二偏振器205可以为线栅偏振器(Wire Grid Polarizer，WGP)。
线栅偏振器可以为包含金属材料或者金属粒子的金属线栅偏振器。需要说明的是，在图2中示出的第一偏振器和第二偏振器的阴影部分是线栅的栅线，并不表示偏振器的透光轴方向，实际上，对于金属线栅偏振器，透光轴的方向与栅线的方向垂直。
在相关的技术中，通常使用由聚乙烯醇(PVA)薄膜制成的偏振器，当背光模组中的光入射到偏振器时，只将入射光中的一个偏振分量通过，而另外一个偏振分量被吸收，这样一来，将造成光线的大量损失，使得光线利用率大大降低。在本公开的实施例中，使用包含金属材料或者金属粒子的线栅偏振器。当光线入射至线栅偏振器时，在金属表面的自由电子的震荡作用下，将与线栅平行震动的电场矢量分量的光线几乎全部反射，而将垂直于线栅的电场矢量分量的光线几乎全部透过，并且被线栅反射的那部分光线能够再次被利用，因此可以提高光的利用率。
在示例性的实施例中，可以通过以下任一种方法形成具有多个透光轴方向的线栅偏振器：
1)可以使用金属靶材形成金属薄膜，然后通过蚀刻工艺形成具有多个透光轴方向的线栅偏振器，其中，透光轴方向与线栅偏振器上的线栅的方向垂直；
2)分别在第一基板201和第二基板202上涂覆包括聚合物单体和金属粒子的混合物层，然后对该混合物层进行构图以形成具有不同方向的多个线栅，其中，透光轴方向与线栅偏振器上的线栅的方向垂直；
3)在第一基板201和第二基板202上聚合物单体和金属粒子的混合物 层，对对应预设位置处的混合物层进行固化处理，其他位置的物质去除，进而在第一基板201和第二基板202上形成由间隔设置的凸起构成的图案以形成具有不同方向的多个线栅，其中，透光轴方向与线栅偏振器上的线栅的方向垂直。
上述的聚合物单体可以包括丙烯酸系单体，例如丙烯酸甲酯、丙烯酸乙酯、丙烯酸正丁酯、甲基丙烯酸正丁酯等。当然，其他实施例也是可行的。
在可选的实施例中，第一偏振器204和第二偏振器205可以具有至少3个不同方向的透光轴。在一个实施例中，可以将相邻两个像素对应的第一偏振器204和第二偏振器205的透光轴方向的夹角设置为大于0°且小于或等于15°，可选地，可以设置为5°。图3a和3b示意性示出本公开实施例中第一偏振器和第二偏振器的栅线的方向，其中第一偏振器和第二偏振器的透光轴的方向与栅线的方向垂直。如图3a所示，第一偏振器的栅线的方向可以包括0°、15°、30°、45°、60°、75°、90°，相应地，第一偏振器的透光轴方向包括90°、105°、120°、135°、150°、165°、180°。如图3b所示，第二偏振器的栅线的方向包括90°、105°、120°、135°、150°、165°、180°，相应地，第二偏振器的透光轴方向包括0°、15°、30°、45°、60°、75°、90°。可以理解，第一偏振器和第二偏振器的透光轴的方向的其他设置也是可行的。
如上所述，第一偏振器204和第二偏振器205被设置为分别具有多个不同的透光轴方向。为了使液晶层203中液晶分子的取向配合第一偏振器204和第二偏振器205的透光轴的方向，可以将液晶层203中各个像素对应的液晶分子配置为根据第一偏振器204或第二偏振器205的透光轴的方向来取向，以使得位于同一层(同一个平面内)的液晶分子的取向不同。在本实施例中，对于同一像素，液晶层203中液晶分子可以被取向为平行于第一偏振器204透光轴的方向(即，与第一偏振器204的线栅方向垂直)。如图2所示，对于像素R，如果第一偏振器204的与像素a相对应的栅线的方向垂直于纸面，相当于透光轴的方向平行于纸面，那么液晶层203中 与像素R对应的液晶分子的取向也为平行于纸面。这种设置使得位于同一层(同一个平面)内的液晶分子具有不同的取向。当观察者正视屏幕和侧视屏幕时，感受到的漏光差异也不大。通过该设置，可以改善不同方位角观察的画质差异较大的问题。
在本实施例中，可以通过光取向(Optical Alignment，OA)技术对液晶分子进行取向。光取向技术的基本原理是，利用紫外光敏聚合物单体材料光化学反应产生的各向异性，使液晶分子定向排列。例如，可以在基板上涂覆一层光敏高分子膜，然后用紫外偏振光照射，只有与偏振光偏振方向平行的光敏基团发生光化学反应，取向膜上产生各向异性，从而诱导液晶分子取向。可以理解，其他的取向技术也是可行的。
在本实施例中，显示面板还包括用于控制液晶分子的旋转的公共电极和像素电极(图中未示出)。公共电极和像素电极可以为面电极或像素电极。
在本实施例中，像素电极为条状电极时，在设计像素电极时，可以将像素电极的取向进行适当的调整，使得像素电极的方向被配置为与液晶层203中的液晶分子的取向保持预定的角度，以便于在施加电压时控制液晶分子的旋转。在一个实施例中，像素电极的方向与液晶分子的取向的夹角可以设置为大约0°-7°。
例如，在使用FFS(Fringe-Field Switching，边缘场开关)模式的显示面板中，像素电极为条状电极，公共电极为面电极，像素电极和公共电极都设置在第一基板201一侧。对于这种显示面板，可以将液晶分子取向为与第一偏振器的透光轴的方向一致，并且将像素电极的方向设置为与液晶层203中的液晶分子的取向保持预定的角度，以适应对液晶分子的取向的调整。在使用IPS(In Plane Switching，平面开关)模式的显示面板中，像素电极和公共电极都为条状电极，且像素电极和公共电极都设置在第一基板201一侧。对于这种显示面板，同样可以将液晶分子取向为与第一偏振器的透光轴的方向一致，并且将像素电极和公共电极的方向设置为与液晶层203中的液晶分子的取向保持预定的角度，以适应对液晶分子的取向的调整。当然，液晶分子的这种取向以及像素电极的方向不限于只适于这 两种模式，其他可以利用液晶分子的这种取向以及像素电极的方向的模式也是可行的。
在本公开实施例中描述的像素是广义上的像素，其可以包括R、G、B三个亚像素中的一种或多种。
在一个示例中，相邻两个亚像素对应的第一偏振器的透光轴的方向不同，并且与同一亚像素对应的第一偏振器的透光轴与第二偏振器的相应透光轴的方向彼此垂直。在这种设置中，亚像素与亚像素之间对应的偏振器的透光轴不同，能够进一步改善不同方位角观察的画质差异较大的问题。
在另一个示例中，相邻两个像素(由R、G、B三个亚像素混合形成)对应的第一偏振器的透光轴的方向不同，并且与同一像素对应的第一偏振器的透光轴与第二偏振器的相应透光轴的方向彼此垂直。
需要说明的，在图2所示的实施例中，TFT阵列层206形成在第一基板上，彩膜层207设置在第二基板上。可以理解，将TFT阵列层206形成在第二基板上，并且将彩膜层207设置在第一基板上也是可行的。在这种情况下，需要对液晶分子的取向以及像素电极的方向作适应性的调整。
图4示意性示出根据本公开的第二实施例提供的显示面板200的截面图。在该实施例中，对于与第一实施例相同的部件，使用相同的参考编号，并且在第一实施例中对相同部件的解释说明也适用于本实施例，将省略重复的描述。
根据第二实施例的显示面板200的结构不同于在图2示出的第一实施例的显示面板200，其不同之处在于液晶分子的取向和电极的配置与第一实施例不同。在该实施例中，如图4所示，将液晶层203中最靠近第一偏振器204的一层液晶分子被取向为与第一偏振器204的透光轴的方向一致，并且液晶层203中最靠近第二偏振器205的一层液晶分子被取向为与第二偏振器205的透光轴的方向一致。例如，对于像素R，与像素R对应的第一偏振器204的透光轴方向(与图中栅线方向垂直)为水平方向，那么将靠近第一偏振器204的液晶分子取向为水平方向(平行于纸面)，而与像素R对应的第二偏振器205的透光轴方向(与图中栅线方向垂直)为垂直于 纸面的方向，那么将靠近第二偏振器205的液晶分子取向为垂直于纸面的方向。其他像素的取向规则与像素R类似。此外，在本实施例中，像素电极和公共电极(图中未示出)设置在第一基板和第二基板上，以产生用于驱动液晶分子旋转的垂直电场。剩余的配置基本上与第一实施例的配置相同。
例如，在使用TN(Twisted Nematic，扭曲向列)模式的显示面板，根据TN模式显示面板的工作原理，像素电极和公共电极都为面电极，并且分别位于第一基板和第二基板上，并且液晶分子被取向为在一个像素内呈螺旋状，因此，可以按照本实施例中的方式对液晶分子取向，以使得在同一层(同一个平面)中的液晶分子具有不同的取向。
图5示意性示出根据本公开的第三实施例提供的显示面板200的截面图。在该实施例中，对于与第一实施例相同的部件，使用相同的参考编号，并且在第一实施例中对相同部件的解释说明也适用于本实施例，将省略重复的描述。
根据第三施例的显示面板200的结构不同于在图2示出的第一实施例的显示面板200，其不同之处在于第一偏振器204和第二偏振器205的位置。在该实施例中，如图5所示，第一偏振器204设置在第一基板201的远离液晶层203的一侧，并且第二偏振器205设置在第二基板202的远离液晶层203的一侧。剩余的配置基本上与第一实施例的配置相同。
如图6所示，本公开的实施例还提供一种显示装置包括上述第一至第三实施例中提供的任意一种显示面板200，以及设置在显示面板200下方的背光模组300。由于本实施例提供的显示装置包括上述实施例提供的显示面板，因此，在上述实施例中对相同部件的解释说明也适用于本实施例，将省略重复的描述。
在本实施例中，可以采用任何本领域熟知的背光模组，例如侧光式背光模组和直下式背光模组。
在该实施例提供的显示装置中，将第一偏振器和第二偏振器设置为具有多个不同方向的透光轴，且相邻像素对应的第一偏振器或第二偏振器的 透光轴的方向不同。当观察者在不同方位角处观察时，观察到的画面效果基本一致，因此可以改善不同方位角观察的画质差异较大的问题。
本公开的实施例还提供一种显示面板的制作方法。由于本实施例提供的制作方法用于制作上述实施例中的显示面板，因此，在上述实施例中对相同部件的解释说明也适用于本实施例，将省略重复的描述。
如图7所示，显示面板的制作方法包括：
S701：分别形成第一基板和第二基板，其中，第一基板和第二基板可以由玻璃或塑料材料制成；
S702：在第一基板上和第二基板上分别形成第一偏振器和第二偏振器，其中，第一偏振器和第二偏振器具有多个透光轴，相邻两个像素对应的第一偏振器或第二偏振器的透光轴的方向不同，并且与同一像素对应的第一偏振器的透光轴与第二偏振器的相应透光轴的方向彼此垂直；
S703：将第一基板和第二基板对盒。
在一个实施例中，上述制作方法还包括：将液晶层设置在第一基板和第二基板之间；以及根据第一偏振器或第二偏振器的透光轴的方向对液晶层中的液晶分子进行取向，以使位于同一层的液晶分子具有多种不同的取向。
在一个实施例中，对所述液晶层中的液晶分子进行取向包括：对液晶层中的液晶分子进行取向，以使对于同一像素，液晶分子的取向与第一偏振器或第二偏振器的透光轴的方向一致。
在一个实施例中，对液晶层中的液晶分子进行取向包括：对液晶层中的液晶分子进行取向，以使对于同一像素，液晶层中最靠近第一偏振器的一层液晶分子的取向与第一偏振器和第二偏振器中的一个的透光轴的方向一致，并且液晶层中最靠近第二偏振器的一层液晶分子的取向与第一偏振器和第二偏振器中的另一个的透光轴的方向一致。
在一个实施例中，相邻两个像素对应的第一偏振器和第二偏振片的透光轴方向的夹角为大于0°且小于或等于15°。
在一个实施例中，所述方法还包括：在第一基板或第二基板上形成多 个像素电极，其中，像素电极的方向与液晶层中的液晶分子的取向保持预定的角度。可选地像素电极的方向与液晶分子的取向的夹角约为0°-7°。
在一个实施例中，显示面板可以为FFS模式、IPS模式、TN模式、VA(Vertical Alignment，垂直取向)模式中的任一种。
需要说明的是，在本公开的描述中，术语“上”、“之上”、“下”、“之下”、“顶”、“底”、“之间”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。例如，当元件或层被称为在另一元件或层“上”时，它可以直接在该另一元件或层上，或者可以存在中间的元件或层；同样，当元件或层被称为在另一元件或层“下”时，它可以直接在该另一元件或层下，或者可以存在至少一个中间的元件或层；当元件或层被称为在两元件或两层“之间”时，其可以为该两元件或两层之间的唯一的元件或层，或者可以存在一个以上的中间元件或层。
此外，在本公开的描述中，当介绍本申请的元素及其实施例时，冠词“一”、“一个”、“该”和“所述”旨在表示存在一个或者多个要素。除非另有说明，“多个”的含义是两个或两个以上。用语“包含”、“包括”、“含有”和“具有”旨在包括性的并且表示可以存在除所列要素之外的另外的要素。术语“第一”、“第二”仅用于描述的目的，而不能理解为指示或暗示相对重要性。
以上为了说明和描述的目的提供了实施例的前述描述。其并不旨在是穷举的或者限制本申请。特定实施例的各个元件或特征通常不限于特定的实施例，但是，在合适的情况下，这些元件和特征是可互换的并且可用在所选择的实施例中，即使没有具体示出或描述。同样也可以以许多方式来改变。这种改变不能被认为脱离了本申请，并且所有这些修改都包含在本申请的范围内。

Claims (20)

  1. 一种显示面板，包括
    彼此相对设置的第一基板和第二基板；
    设置在所述第一基板上的第一偏振器，以及
    设置在所述第二基板的上的第二偏振器，其中，
    所述显示面板包括多个像素，所述第一偏振器和所述第二偏振器具有多个透光轴，相邻两个像素对应的所述第一偏振器或所述第二偏振器的透光轴的方向不同，并且与同一像素对应的所述第一偏振器的透光轴与所述第二偏振器的相应透光轴的方向彼此垂直。
  2. 根据权利要求1所述的显示面板，其中，所述显示面板还包括设置在所述第一基板和所述第二基板之间的液晶层，所述液晶层中各个像素对应的液晶分子依赖于所述第一偏振器或所述第二偏振器的相应透光轴的方向被取向，以使位于同一层的所述液晶分子具有多种不同的取向。
  3. 根据权利要求2所述的显示面板，其中，对于同一像素，所述液晶层中的液晶分子的取向与所述第一偏振器或所述第二偏振器的透光轴的方向一致。
  4. 根据权利要求2所述的显示面板，其中，对于同一像素，所述液晶层中最靠近所述第一偏振器的一层液晶分子的取向与所述第一偏振器和所述第二偏振器中的一个的透光轴的方向一致，并且所述液晶层中最靠近所述第二偏振器的一层液晶分子的取向与所述第一偏振器和所述第二偏振器中的另一个的透光轴的方向一致。
  5. 根据权利要求2至4中任一项所述的显示面板，其中，所述液晶层中的所述液晶分子通过光取向技术来取向。
  6. 根据权利要求1至4中任一项所述的显示面板，其中，所述像素包括R、G、B三种亚像素中的一种或多种。
  7. 根据权利要求2至6中任一项所述的显示面板，其中，所述第一偏振器设置在所述第一基板的靠近所述液晶层的一侧；所述第二偏振器设置在所述第二基板的靠近所述液晶层的一侧。
  8. 根据权利要求1至6中任一项所述的显示面板，其中，所述第一偏振器和所述第二偏振器为线栅偏振器。
  9. 根据权利要求1至6中任一项所述的显示面板，其中，相邻两个像素对应的所述第一偏振器和所述第二偏振片的透光轴方向的夹角为大于0°且小于或等于15°。
  10. 根据权利要求2至6中任一项所述的显示面板，其中，还包括设置在所述第一基板或所述第二基板上的多个像素电极，其方向被配置为与所述液晶层中的液晶分子的取向保持预定的角度。
  11. 根据权利要求10所述的显示面板，其中，所述像素电极的方向与所述液晶分子的取向的夹角为0°-7°。
  12. 根据权利要求2至11中任一项所述的显示面板，其中，所述显示面板还包括设置在所述第一基板和所述第二基板中的一个的靠近所述液晶层的一侧的薄膜晶体管阵列，以及设置在所述第一基板和所述第二基板中的另一个的靠近所述液晶层的一侧的彩色滤光片和黑矩阵。
  13. 一种显示装置，包括权利要求1至12中任一项所述的显示面板和设置在所述显示面板下方的背光模组。
  14. 一种显示面板的制作方法，所述显示面板包括多个像素，所述方法包括：
    分别形成第一基板和第二基板；
    在所述第一基板上和所述第二基板上分别形成第一偏振器和第二偏振器，其中，所述第一偏振器和所述第二偏振器具有多个透光轴，相邻两个像素对应的所述第一偏振器或所述第二偏振器的透光轴的方向不同，并且与同一像素对应的所述第一偏振器的透光轴与所述第二偏振器的相应透光轴的方向彼此垂直；
    将所述第一基板和所述第二基板对盒。
  15. 根据权利要求14所述的制作方法，其中，所述方法还包括：
    将液晶层设置在所述第一基板和所述第二基板之间；以及
    根据所述第一偏振器或所述第二偏振器的透光轴的方向对所述液晶层 中的液晶分子进行取向，以使位于同一层的所述液晶分子具有多种不同的取向。
  16. 根据权利要求15所述的制作方法，其中，对所述液晶层中的液晶分子进行取向包括：
    对所述液晶层中的液晶分子进行取向，以使对于同一像素，所述液晶分子的取向与所述第一偏振器或所述第二偏振器的透光轴的方向一致。
  17. 根据权利要求15所述的制作方法，其中，对所述液晶层中的液晶分子进行取向包括：
    对所述液晶层中的液晶分子进行取向，以使对于同一像素，所述液晶层中最靠近所述第一偏振器的一层液晶分子的取向与所述第一偏振器和所述第二偏振器中的一个的透光轴的方向一致，并且所述液晶层中最靠近所述第二偏振器的一层液晶分子的取向与所述第一偏振器和所述第二偏振器中的另一个的透光轴的方向一致。
  18. 根据权利要求15至17中任一项所述的制作方法，其中，采用光取向技术对所述液晶层中的所述液晶分子取向。
  19. 根据权利要求14至17中任一项所述的制作方法，其中，相邻两个像素对应的所述第一偏振器和所述第二偏振片的透光轴方向的夹角为大于0°且小于或等于15°。
  20. 根据权利要求15至17中任一项所述的制作方法，其中，所述方法还包括：
    在所述第一基板上或所述第二基板形成多个像素电极，其中，所述像素电极的方向与所述液晶分子的取向的夹角为0°-7°。
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