WO2016095404A1 - 液晶显示面板、其制作方法及显示装置 - Google Patents

液晶显示面板、其制作方法及显示装置 Download PDF

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Publication number
WO2016095404A1
WO2016095404A1 PCT/CN2015/078258 CN2015078258W WO2016095404A1 WO 2016095404 A1 WO2016095404 A1 WO 2016095404A1 CN 2015078258 W CN2015078258 W CN 2015078258W WO 2016095404 A1 WO2016095404 A1 WO 2016095404A1
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Prior art keywords
liquid crystal
inclined surface
display panel
array substrate
layer
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PCT/CN2015/078258
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English (en)
French (fr)
Inventor
金熙哲
崔贤植
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京东方科技集团股份有限公司
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Priority to US14/895,091 priority Critical patent/US10191330B2/en
Priority to EP15797577.2A priority patent/EP3239771B1/en
Publication of WO2016095404A1 publication Critical patent/WO2016095404A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
    • 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
    • G02F1/1341—Filling or closing of cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133325—Assembling processes
    • G—PHYSICS
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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
    • G02F1/133357—Planarisation layers
    • 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
    • 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
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
    • G02F1/133761—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle with different pretilt angles
    • 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
    • G02F1/133773—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers the alignment material or treatment being different for the two opposite substrates
    • 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
    • G02F1/133776—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers having structures locally influencing the alignment, e.g. unevenness
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/121—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode common or background
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/123—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode pixel

Definitions

  • Embodiments of the present invention relate to a liquid crystal display panel, a method of fabricating the same, and a display device.
  • liquid crystal displays have been widely used in various fields.
  • Liquid crystal displays utilize the physical properties of liquid crystal molecules to control the liquid crystal molecules to flip when energized, so that light energy can pass through liquid crystal molecules, thereby achieving the purpose of display.
  • Advanced Super Dimension Switch (ADDS) mode and In-Plane Switching (IPS) are used to deflect liquid crystal molecules in the horizontal direction when energized, and along certain The direction is arranged to realize image display, which has the advantages of high viewing angle, fast response speed and accurate color reproduction.
  • the conventional liquid crystal display panel includes: a oppositely disposed opposite substrate 01 and an array substrate 02, and a liquid crystal layer 03 filled between the opposite substrate 01 and the array substrate 02, wherein the array substrate 02 includes a lining a base substrate 021, and a gate electrode 022, a gate insulating layer 023, a source and drain electrode 024, and a passivation layer 025 which are sequentially disposed on the base substrate 021, and the array substrate 02 further includes, for example, an active layer, a pixel electrode layer, and a common electrode Other film structures such as layers are not shown in FIG.
  • the liquid crystal layer 03 is composed of liquid crystal molecules having a negative dielectric constant and anisotropy; an opposite surface of the opposite substrate 01 and the array substrate 02 is coated with an alignment film 04 having an opposite rubbing direction (FIG. 1)
  • the arrow shows the rubbing direction), and the alignment film 04 enables the liquid crystal molecules to be aligned neatly in a direction of a certain pretilt angle ⁇ in the initial state, thereby functioning to obtain uniform brightness and high contrast of the liquid crystal display.
  • the liquid crystal molecules in the liquid crystal layer 03 are aligned in a direction of a certain pretilt angle ⁇ , that is, the liquid crystal layer 03
  • the long axis of the liquid crystal molecules is aligned in the same direction as the angle between the opposite substrate 01 and the horizontal plane of the array substrate 02.
  • the liquid crystal molecules have only one tilt state, when viewed from the left side and when viewed from the right side,
  • the phase retardation of the liquid crystal molecules in the liquid crystal layer 03 is different, resulting in a slightly different color observed, that is, the liquid crystal display panel exhibits blue and yellow colors from the left and right viewing angles respectively. Therefore, the above conventional liquid crystal display panel will The phenomenon of different colors observed from the left and right viewing angles appears, which affects the picture quality of the liquid crystal display.
  • a liquid crystal display panel includes: a oppositely disposed opposite substrate and an array substrate, and a liquid crystal layer filled between the opposite substrate and the array substrate, and the opposite surfaces of the opposite substrate and the array substrate are respectively disposed An alignment film having an opposite rubbing direction, the liquid crystal display panel having a plurality of pixel units arranged in an array. Each of the pixel units is divided into two pixel regions along the rubbing direction of the alignment film.
  • each of the pixel units at least one of the opposite substrate or the surface of the array substrate facing the liquid crystal layer is an inclined surface, so that the two pixel regions respectively correspond to
  • the long axis of the liquid crystal molecules in the liquid crystal layer has the same absolute value as the mean angle of the angle between the opposing substrate and the horizontal plane of the array substrate, and the sum is zero.
  • two of the pixel regions in each of the pixel units are equal in size.
  • a surface of the opposite substrate or array substrate corresponding to one of the pixel regions facing the liquid crystal layer is an inclined surface, and a high point of the inclined surface is an alignment film.
  • the side at which the friction starts; the inclination angle of the inclined surface with respect to the horizontal plane of the opposite substrate or the array substrate is 4 times the angle between the long axis of the liquid crystal molecules in the vicinity of the inclined surface and the inclined surface.
  • the inclined surface has an inclination angle of 4 to 20 degrees.
  • the surface of the opposite substrate corresponding to one of the pixel regions and the surface of the array substrate facing the liquid crystal layer are inclined surfaces, and the high point of the inclined surface is oriented a side at which the friction of the film starts;
  • the inclination angle of the inclined surface with respect to the horizontal plane of the opposite substrate and the array substrate is twice the angle between the long axis of the liquid crystal molecules in the vicinity of the inclined surface and the inclined surface.
  • a surface of the opposite substrate facing the liquid crystal layer corresponding to one of the pixel regions is an inclined surface
  • the array substrate corresponding to the other pixel region faces the liquid crystal
  • the surface on one side of the layer is an inclined surface
  • the high point of the inclined surface is the side on which the friction of the alignment film starts;
  • the inclination angle of the inclined surface with respect to the horizontal plane of the opposite substrate and the array substrate is near the inclined surface
  • the angle between the long axis of the liquid crystal molecules and the inclined surface is twice.
  • the inclined surface has an inclination angle of 2 to 10 degrees.
  • the array substrate includes at least one film layer having a raised structure that produces the inclined surface; and/or the opposite substrate includes at least one film layer having the tilt The raised structure of the face.
  • the film layer having a convex structure is an insulating layer, a semiconductor layer or a conductive layer.
  • the insulating layer material includes silicon nitride, silicon oxide or an organic resin.
  • the inclined plane high point is in the substrate in which the two pixel regions are demarcated, and the film layer of the pixel region having no inclined surface has the same thickness as the high dot film layer, so that the film layer Has a continuous graphic.
  • a display device includes the liquid crystal display panel as described above.
  • a method of fabricating the above liquid crystal display panel comprises: forming a film layer on the array substrate or the opposite substrate; slowly etching the film layer of the array substrate or the opposite substrate to form a film layer pattern having a continuous concave-convex structure; The film layer is subjected to rapid etching in addition to the region where the inclined surface is to be formed, and the region other than the inclined surface to be formed is removed to form a film layer having the inclined surface.
  • the method further includes forming a pattern of the alignment film on the film layer having the inclined surface.
  • FIG. 1 is a schematic structural view of a conventional liquid crystal display panel
  • FIG. 2a to 2e are respectively schematic structural views of a liquid crystal display panel according to an embodiment of the present invention, wherein FIG. 2b is an enlarged schematic view of a portion C of FIG. 2a;
  • FIG. 3 is a flowchart of a method for fabricating a liquid crystal display panel according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a method for fabricating an array substrate of a liquid crystal display panel according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of the method for fabricating an array substrate of a liquid crystal display panel after each step is performed according to an embodiment of the present invention.
  • each film layer in the drawings do not reflect the true proportion of the liquid crystal display panel, and the purpose is only to illustrate the contents of the present invention.
  • the embodiment of the present invention provides a liquid crystal display panel, as shown in FIG. 2a, comprising: a oppositely disposed opposite substrate 10 and an array substrate 20, and a liquid crystal layer 30 filled between the opposite substrate 10 and the array substrate 20,
  • the surface opposite to the opposite substrate 10 and the array substrate 20 is provided with an alignment film 40 having an opposite rubbing direction (the arrow in Fig. 2a shows the rubbing direction).
  • the liquid crystal display panel has a plurality of pixel units arranged in an array. It should be noted that the liquid crystal display panel includes a display area and a peripheral area surrounding the display area, and the plurality of pixel units arranged in a matrix are disposed in the display area.
  • Each pixel unit is divided into two pixel regions A and B along the rubbing direction of the alignment film 40 as shown in FIG. 2a.
  • each of the pixel units at least one of the pixel regions corresponding to the opposite substrate 10 or the surface of the array substrate 20 facing the liquid crystal layer is an inclined surface, so that the two pixel regions A and B respectively correspond to the liquid crystal in the liquid crystal layer 30
  • the long axis of the molecule has the same absolute value as the mean of the angle between the opposing substrate 10 and the horizontal plane of the array substrate 20, and the sum is zero.
  • the phase retardation of the liquid crystal molecules in the liquid crystal layer is different, resulting in a slightly different color observed, that is, the liquid crystal display panel appears blue and yellow from the left and right viewing angles, respectively.
  • the liquid crystal display panel provided by the embodiment of the present invention is divided into two pixel regions in each pixel unit along the rubbing direction of the alignment film, and in each pixel unit, at least The surface of the opposite substrate or the array substrate facing the liquid crystal layer is inclined, for example, the opposite substrate of one pixel region or the surface of the array substrate facing the liquid crystal layer is an inclined surface; or, The surface of the opposite substrate corresponding to the pixel region and the surface of the array substrate facing the liquid crystal layer are inclined surfaces; or the surface of the opposite substrate facing the liquid crystal layer of one pixel region is an inclined surface, and the array corresponding to the other pixel region The surface of the substrate facing the liquid crystal layer side is an inclined surface.
  • the liquid in the liquid crystal layer The crystal molecules respectively have different tilt states in the two pixel regions, so that the long axis of the liquid crystal molecules in the liquid crystal layer corresponding to the two pixel regions respectively has the same absolute value as the mean value of the angle between the opposite substrate and the horizontal plane of the array substrate. And the sum is zero, so that the phase retardation of the liquid crystal molecules in the liquid crystal layer in the two pixel regions is uniform when viewed from the left and right viewing angles, respectively, and thus the colors observed from the left and right viewing angles are the same, thereby further Improve viewing angle characteristics and improve the picture quality of liquid crystal displays.
  • the phase delay is completely uniform.
  • the sizes of the two pixel regions A and B in each pixel unit are generally set to be equal, so that the liquid crystal layer is not observed when viewed from the left and right viewing angles.
  • the phase retardation of some liquid crystal molecules is inconsistent, resulting in a phenomenon in which the colors are different.
  • the liquid crystal display panel in order to make liquid crystal molecules in the liquid crystal layer have different tilt states in two pixel regions, one pixel in each pixel unit
  • the surface of the opposite substrate or the array substrate facing the liquid crystal layer side may be provided as an inclined surface, and the high point of the inclined surface is the side on which the rubbing of the alignment film starts.
  • the surface of the array substrate 20 corresponding to the pixel region B facing the liquid crystal layer 30 is provided as an inclined surface
  • the high point of the inclined surface is the side on which the rubbing of the alignment film 40 starts.
  • Figure 2b is an enlarged schematic view of a portion C of Figure 2a.
  • the surface of the array substrate 20 corresponding to the pixel region B facing the liquid crystal layer 30 is provided as an inclined surface
  • the angle between the long axis of the liquid crystal molecules in the vicinity of the inclined surface of the liquid crystal layer 30 and the inclined surface is ⁇
  • the inclined surface is opposite to
  • the inclination angle ⁇ of the horizontal plane of the array substrate 20 is set to be four times the angle between the long axis and the inclined surface of the liquid crystal molecules in the vicinity of the inclined surface in the liquid crystal layer 30, that is, the inclined surface is opposite to the opposite substrate 10 or the array substrate 20
  • the angle ⁇ between the long axis of the liquid crystal molecules in the vicinity of the inclined surface with respect to the horizontal plane of the array substrate 20 is 3 ⁇ , and is opposite in the pixel region B.
  • the angle between the long axis of the liquid crystal molecules near the surface of the substrate relative to the horizontal plane of the counter substrate 10 is - ⁇
  • the average value of the angle between the long axis of the liquid crystal molecules corresponding to the two pixel regions A and B and the horizontal plane of the opposite substrate or the array substrate has the same absolute value, and the liquid crystal molecules corresponding to the two pixel regions A and B respectively
  • the sum of the average of the long axis and the angle of the opposite substrate or the horizontal plane of the array substrate is zero, that is, cancel each other.
  • liquid crystal display panel in order to make liquid crystal molecules in the liquid crystal layer have different tilt states in two pixel regions, in each pixel unit.
  • the surface of the opposite substrate corresponding to one pixel region and the surface of the array substrate facing the liquid crystal layer may be disposed as an inclined surface, and the high point of the inclined surface is the side where the friction of the alignment film starts, as shown in FIG. 2c and FIG. 2d.
  • the surfaces of the counter substrate 10 corresponding to the pixel region B and the surface of the array substrate 20 facing the liquid crystal layer 30 are respectively provided as inclined surfaces, and the high point of the inclined surface is the side on which the rubbing of the alignment film 40 starts.
  • the inclination angle ⁇ of the inclined surface with respect to the horizontal plane of the opposite substrate 10 and the array substrate 20 may be set to be twice the angle between the long axis and the inclined surface of the liquid crystal molecules in the vicinity of the inclined surface in the liquid crystal layer 30, that is, the inclination
  • the inclination angle ⁇ 2 ⁇ of the surface with respect to the horizontal plane of the opposite substrate 10 and the array substrate 20.
  • the longitudinal axis of the liquid crystal molecules in the vicinity of the inclined surface is opposite to the horizontal plane of the opposite substrate 10 and the array substrate 20
  • the long axis of the liquid crystal molecules in the pixel region A may be opposite to the array substrate 20
  • the angle of the horizontal plane - ⁇ cancels.
  • the long axis of the liquid crystal molecules corresponding to the two pixel regions A and B respectively has the same absolute value as the mean value of the angle between the opposite substrate and the horizontal plane of the array substrate, and the liquid crystal molecules corresponding to the two pixel regions A and B respectively
  • the sum of the average of the long axis and the angle between the opposing substrate and the horizontal plane of the array substrate is zero, that is, cancel each other out.
  • the above liquid crystal display panel provided by the embodiment of the present invention
  • the surface of the opposite substrate facing the liquid crystal layer corresponding to one pixel region may be set as an inclined surface.
  • the surface of the array substrate corresponding to the other pixel region facing the liquid crystal layer is an inclined surface, and the high point of the inclined surface is the side where the rubbing of the alignment film starts.
  • the pixel region A corresponds to the opposite direction.
  • the surface of the substrate 10 facing the liquid crystal layer 30 is provided as an inclined surface, and the surface of the array substrate 20 corresponding to the pixel region B facing the liquid crystal layer 30 is provided as an inclined surface, and the high point of the inclined surface is the start of the rubbing of the alignment film 40.
  • the inclined surface is opposite to the opposite substrate 10 and
  • the inclination angle ⁇ of the horizontal plane of the array substrate 20 may be set to be twice the angle between the long axis of the liquid crystal molecules and the inclined surface in the vicinity of the inclined surface in the liquid crystal layer 30.
  • the second embodiment and the third embodiment can better tilt the liquid crystal molecules in the liquid crystal layer in the two pixel regions A and B, respectively, with respect to the first embodiment, but
  • the manufacturing process of the second embodiment and the third embodiment are both complicated.
  • the specific implementation manner may be designed according to actual needs, which is not limited herein.
  • the inclination angle of the inclined surface As shown in FIG. 2a, it is necessary to set the inclination angle of the inclined surface to be 4 times of the angle between the long axis of the liquid crystal molecule and the inclined surface in the vicinity of the inclined surface, and the angle between the long axis of the liquid crystal molecule and the inclined surface near the inclined surface is liquid crystal.
  • the pretilt angle of the molecules is generally set to 1 to 5 degrees, and therefore, the inclination angle of the inclined surface with respect to the horizontal plane of the opposite substrate and the array substrate should be set to 4 to 20 degrees.
  • the inclination angle of the inclined surface is a pretilt angle of the liquid crystal molecules and is generally set to 1 to 5 degrees, and therefore, the inclination angle of the inclined surface with respect to the horizontal plane of the opposite substrate and the array substrate should be set to 2 to 10 degrees.
  • the array substrate in order to make the array substrate have an inclined surface, includes at least one film layer having a surface facing the liquid crystal layer side of the array substrate corresponding to one pixel region.
  • the convex structure of the inclined surface is as shown in Fig. 2a.
  • the flat layer on the array substrate 20 has a convex structure 28 in which the surface of the array substrate 20 corresponding to the pixel region B facing the liquid crystal layer is an inclined surface.
  • other film layers may have a convex structure that produces an inclined surface, which will not be described herein.
  • the opposite substrate in order to have an inclined surface of the opposite substrate, includes at least one film layer, the film layer There is a convex structure in which the surface of the opposite substrate facing the liquid crystal layer corresponding to one pixel region is an inclined surface.
  • the flat layer on the counter substrate 10 has a convex structure 29 in which the surface of the counter substrate 10 corresponding to the pixel region B facing the liquid crystal layer is an inclined surface.
  • other film layers may have a convex structure that produces an inclined surface, which will not be described herein.
  • the film layer having a convex structure may be an insulating layer, a semiconductor layer or a conductive layer, that is, the material of the protruding structure may be an insulating layer material, a semiconductor layer material, or a conductive layer.
  • the semiconductor layer material includes a-Si or IGZO, etc.
  • the conductive layer material includes metal aluminum, metal copper, ITO or IZO, etc.
  • the insulating layer material includes silicon nitride, silicon oxide or organic resin.
  • the inclined plane high point O is at the boundary of two pixel regions, and the film layer of the pixel region having no inclined surface has The same thickness as the high-point O film layer allows the film layer to have a continuous pattern, and this continuous film layer having an inclined surface can reduce light leakage in the middle portion of each pixel unit.
  • the array substrate of the liquid crystal display panel provided by the embodiment of the present invention further has other film layer structures such as an active layer, a pixel electrode layer, an insulating layer, and a common electrode layer, and a thin film transistor, a gate line, a data line, and the like. Structures, these specific structures may be implemented in various ways, and are not limited herein.
  • the embodiment of the present invention further provides a method for fabricating the liquid crystal display panel provided by the embodiment of the present invention.
  • the principle of solving the problem is similar to the foregoing liquid crystal display panel. Therefore, the implementation of the method can be referred to the implementation of the liquid crystal display panel. The repetitions are not repeated here.
  • the manufacturing method of the liquid crystal display panel provided by the embodiment of the present invention, as shown in FIG. 3, includes the following steps:
  • the etching in step S302 is a slow etching, and the lateral etching rate is greater than the longitudinal etching rate.
  • the etching in step S303 is rapid etching, and the lateral etching rate is lower than the longitudinal etching rate. rate.
  • the method further includes forming a pattern of the alignment film on the film layer having the inclined surface.
  • a method for fabricating an array substrate in a liquid crystal display panel according to an embodiment of the present invention is described in detail in a specific example. As shown in FIG. 4, the method includes the following steps:
  • a pattern including the gate electrode 22 and the gate insulating layer 23 is sequentially formed on the base substrate 21, and then an insulating layer opposite to the gate electrode 22 is formed on the base substrate on which the gate insulating layer 23 is formed.
  • a source drain 24 is formed, and then a pattern of the passivation layer 25 is formed on the source and drain electrodes 24;
  • a flat layer 26 is formed.
  • a photoresist (not shown) is formed on the flat layer 26.
  • a photoresist opening portion is formed after exposure and development of the photoresist, the photoresist opening portion corresponding to a region other than the convex structure.
  • the flat layer is etched using the exposed and developed photoresist as a mask.
  • the etching process is controlled such that the lateral etch rate is greater than the longitudinal etch rate such that the lateral etch width is greater than the photoresist opening portion, as shown in FIG. 5c, forming a planar layer having a continuous relief structure 27 in each pixel unit. Graphics.
  • a slow etch is performed to form a pattern of a flat layer having a continuous relief structure 27.
  • the array substrate in the liquid crystal display panel provided by the embodiment of the present invention is produced by the above steps S401 to S405 provided by the examples.
  • the embodiment of the invention further provides a display device, which comprises the above liquid crystal display panel provided by the embodiment of the invention, and the display device can be: a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigation device, etc.
  • the display device can be: a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigation device, etc.
  • a product or part that has a display function are understood by those skilled in the art, and are not described herein, nor should they be construed as limiting the invention.

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Abstract

一种液晶显示面板、其制作方法及显示装置。该液晶显示面板包括：相对设置的对向基板（10）和阵列基板（20），以及液晶层（30），在对向基板（10）和阵列基板（20）相对的表面分别设置有具有相反摩擦方向的取向膜（40），液晶显示面板具有多个呈阵列排布的像素单元，在每个像素单元沿着取向膜的摩擦方向分为两个像素区域（A，B），至少任一像素区域对应的对向基板（10）或阵列基板（20）面向液晶层（30）一侧的表面为倾斜面，使两个像素区域（A，B）分别对应的液晶层（30）中的液晶分子的长轴与对向基板（10）和阵列基板（20）所在水平面的夹角的均值具有相同的绝对值，且和为零。

Description

液晶显示面板、其制作方法及显示装置 技术领域
本发明的实施例涉及一种液晶显示面板、其制作方法及显示装置。
背景技术
目前，液晶显示器已被广泛地应用于各种领域，液晶显示是利用液晶分子的物理性质，在通电时控制液晶分子翻转，使光能透过液晶分子，从而达到显示的目的。高级超维场转换技术(ADvanced Super Dimension Switch，简称ADS)模式和平面转换技术(In-Plane Switching，简称IPS)，都是在通电时，使液晶分子在水平方向上产生偏转，并且沿一定的方向排列，来实现图像显示，具有可视角度高，响应速度快，色彩还原准确等优势。
如图1所示，现有的液晶显示面板包括：相对设置的对向基板01与阵列基板02，以及填充在对向基板01和阵列基板02之间的液晶层03，其中阵列基板02包括衬底基板021，以及依次设置在衬底基板021上的栅极022、栅绝缘层023、源漏极024和钝化层025，阵列基板02还会包括诸如有源层、像素电极层和公共电极层等其他膜层结构，在图1中未示出。液晶层03是由介电常数为负且各向异性的液晶分子构成；在上述对向基板01和阵列基板02相对的表面分别涂布了一层具有相反摩擦方向的取向膜04(图1中箭头示出了摩擦方向)，取向膜04能使液晶分子在初始情况下沿一定的预倾角δ的方向整齐地排列，起到使液晶显示器得到均匀的亮度和高的对比度的作用。
由于在对向基板01和阵列基板02相对的表面分别涂布了一层具有相反摩擦方向的取向膜04，使液晶层03中的液晶分子沿一定的预倾角δ的方向排列，即液晶层03中的液晶分子的长轴与对向基板01和阵列基板02所在水平面的夹角方向沿同一个方向排列，此时液晶分子只有一种倾斜状态，从左侧观察时和从右侧观察时，液晶层03中的液晶分子的相位延迟是不同的，导致观察到的色彩稍有不同，即从左右视角分别观察到液晶显示面板呈现出蓝色和黄色，因此，上述现有的液晶显示面板会出现分别从左右视角观察到的色彩不同的现象，而影响液晶显示器的画面品质。
发明内容
根据本发明的实施例，提供一种液晶显示面板。该液晶显示面板包括：相对设置的对向基板和阵列基板，以及填充在所述对向基板和阵列基板之间的液晶层，在所述对向基板和所述阵列基板相对的表面分别设置有具有相反摩擦方向的取向膜，所述液晶显示面板具有多个呈阵列排布的像素单元。在每个所述像素单元沿着所述取向膜的摩擦方向分为两个像素区域。在每个所述像素单元中，至少任一所述像素区域对应的所述对向基板或所述阵列基板面向所述液晶层一侧的表面为倾斜面，使两个所述像素区域分别对应的液晶层中的液晶分子的长轴与所述对向基板和阵列基板所在水平面的夹角的均值具有相同的绝对值，且和为零。
例如，在每个所述像素单元中的两个所述像素区域大小相等。
例如，在每个所述像素单元中，一个所述像素区域对应的所述对向基板或阵列基板面向所述液晶层一侧的表面为倾斜面，且所述倾斜面的高点为取向膜的摩擦开始的一侧；所述倾斜面相对于所述对向基板或阵列基板所在水平面的倾斜角为所述倾斜面附近的液晶分子长轴与所述倾斜面的夹角的4倍。
例如，所述倾斜面的倾斜角为4度至20度。
例如，在每个所述像素单元中，一个所述像素区域对应的所述对向基板和阵列基板面向所述液晶层一侧的表面均为倾斜面，且所述倾斜面的高点为取向膜的摩擦开始的一侧；所述倾斜面相对于所述对向基板和阵列基板所在水平面的倾斜角为倾斜面附近的液晶分子长轴与所述倾斜面的夹角的2倍。
例如，在每个所述像素单元中，一个所述像素区域对应的所述对向基板面向所述液晶层一侧的表面为倾斜面，另一像素区域对应的所述阵列基板面向所述液晶层一侧的表面为倾斜面，且所述倾斜面的高点为取向膜的摩擦开始的一侧；所述倾斜面相对于所述对向基板和阵列基板所在水平面的倾斜角为倾斜面附近的液晶分子长轴与所述倾斜面的夹角的2倍。
例如，所述倾斜面的倾斜角为2度至10度。
例如，所述阵列基板包括至少一膜层，所述膜层具有产生所述倾斜面的凸起结构；和/或所述对向基板包括至少一膜层，所述膜层具有产生所述倾斜面的凸起结构。
例如，具有凸起结构的所述膜层为绝缘层、半导体层或导电层。
例如，所述绝缘层材料包括氮化硅、氧化硅或有机树脂。
例如，在每个像素单元中，倾斜面高点处于两个像素区域分界的基板中，不具有倾斜面的像素区域的膜层具有与所述高点膜层相同的厚度，使所述膜层具有连续的图形。
根据本发明的实施例，提供一种显示装置。该显示装置包括如上所述的液晶显示面板。
根据本发明的实施例，提供一种上述液晶显示面板的制作方法。该方法包括：在阵列基板或对向基板上形成一膜层；对所述阵列基板或对向基板的膜层进行缓慢刻蚀，形成具有连续凹凸结构的膜层图形；对具有连续凹凸结构图形的膜层中除将要形成倾斜面之外的其他区域进行快速刻蚀，去除掉除将要形成倾斜面之外的其他区域，以形成具有倾斜面的膜层。
例如，所述方法还包括在所述具有倾斜面的膜层上形成取向膜的图形。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例，而非对本发明的限制。
图1为现有的液晶显示面板的结构示意图；
图2a至图2e分别为本发明实施例提供的液晶显示面板的结构示意图，其中图2b是图2a中的部分C的放大示意图；
图3为本发明实施例提供的液晶显示面板的制作方法的流程图；
图4为本发明实施例提供的液晶显示面板的阵列基板的制作方法的流程图；
图5a至图5e分别为本发明实施例提供的液晶显示面板的阵列基板的制作方法中在各步骤执行后的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合附图，对本发明实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例 是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
附图中各膜层的厚度和区域的形状不反映液晶显示面板的真实比例，目的只是示意说明本发明内容。
本发明实施例提供了一种液晶显示面板，如图2a所示，包括：相对设置的对向基板10和阵列基板20，以及填充在对向基板10和阵列基板20之间的液晶层30，在对向基板10和阵列基板20相对的表面分别设置有具有相反摩擦方向的取向膜40(图2a中箭头示出了摩擦方向)。该液晶显示面板具有多个呈阵列排布的像素单元。需要说明的是，液晶显示面板包括显示区域和围绕显示区域的外围区域，所述多个呈矩阵排布的像素单元设置在所述显示区域中。
在每个像素单元沿着取向膜40的摩擦方向分为两个像素区域A和B，如图2a所示。
在每个像素单元中，至少任一像素区域对应的对向基板10或阵列基板20面向液晶层一侧的表面为倾斜面，使两个像素区域A和B分别对应的液晶层30中的液晶分子的长轴与对向基板10和阵列基板20所在水平面的夹角的均值具有相同的绝对值，且和为零。
在现有的液晶显示面板中，当液晶层中的液晶分子的长轴与对向基板和阵列基板所在水平面的夹角方向都沿同一个方向排列时，即液晶分子只有一种倾斜状态时，从左侧观察时和从右侧观察时，液晶层中的液晶分子的相位延迟不同，导致观察到的颜色稍有不同，即从左右视角分别观察到液晶显示面板呈现出蓝色和黄色。为了避免分别从左右视角观察到的色彩不同的问题，本发明实施例提供的液晶显示面板在每个像素单元沿着取向膜的摩擦方向分为两个像素区域，在每个像素单元中，至少任一像素区域对应的对向基板或阵列基板面向液晶层一侧的表面为倾斜面，例如：一个像素区域对应的对向基板或阵列基板面向液晶层一侧的表面为倾斜面；或，一个像素区域对应的对向基板和阵列基板面向液晶层一侧的表面均为倾斜面；或，一个像素区域对应的对向基板面向液晶层一侧的表面为倾斜面，另一像素区域对应的阵列基板面向液晶层一侧的表面为倾斜面。由于具有上述倾斜面，液晶层中的液 晶分子分别在两个像素区域具有不同的倾斜状态，使两个像素区域分别对应的液晶层中的液晶分子的长轴与对向基板和阵列基板所在水平面的夹角的均值具有相同的绝对值，且和为零，这样可以保证分别从左右视角观察时，液晶层中的液晶分子在两个像素区域的相位延迟是一致的，因此分别从左右视角观察到的色彩是相同的，从而可以进一步改善视角特性，提高液晶显示器的画面品质。
例如，在本发明实施例提供的上述液晶显示面板中，为了进一步能够保证分别从左右视角观察时，两个像素区域分别对应的液晶层中的液晶分子在两个像素区域A和B中总的相位延迟是完全一致的，如图2a所示，在每个像素单元中的两个像素区域A和B的大小一般设置为相等，这样就不会出现分别从左右视角观察时，液晶层中的一部分液晶分子的相位延迟不一致而导致色彩不相同的现象。
在一种实施方式中，在本发明实施例提供的上述液晶显示面板中，为了使液晶层中的液晶分子在两个像素区域中具有各自不同的倾斜状态，在每个像素单元中，一个像素区域对应的对向基板或阵列基板面向液晶层一侧的表面可以设置为倾斜面，且倾斜面的高点为取向膜的摩擦开始的一侧。例如，如图2a所示，像素区域B对应的阵列基板20面向液晶层30一侧的表面设置为倾斜面，且倾斜面的高点为取向膜40的摩擦开始的一侧。图2b是图2a中的部分C的放大示意图。
并且，为了保证两个像素区域分别对应的液晶分子的长轴与对向基板或阵列基板所在水平面的夹角的均值具有相同的绝对值，且和为零，如图2a和2b所示，当像素区域B对应的阵列基板20面向液晶层30一侧的表面设置为倾斜面时，液晶层30中倾斜面附近的液晶分子的长轴与该倾斜面的夹角大小为γ，该倾斜面相对于阵列基板20所在水平面的倾斜角θ则设置为液晶层30中倾斜面附近的液晶分子的长轴与倾斜面的夹角大小的4倍，即该倾斜面相对于对向基板10或阵列基板20所在水平面的倾斜角θ＝4γ。当该倾斜面相对于阵列基板20所在水平面的倾斜角θ为4γ时，则倾斜面附近的液晶分子的长轴相对于阵列基板20所在水平面的夹角η为3γ，而在像素区域B中对向基板表面附近的液晶分子长轴相对于对向基板10所在水平面的夹角为-γ，像素区域B中的液晶分子的长轴相对于水平面平均下来的夹角为(-γ+3γ) /2＝γ,可以与像素区域A中的液晶分子的长轴相对于阵列基板20所在水平面的夹角-γ相抵消。即两个像素区域A和B分别对应的液晶分子的长轴与对向基板或阵列基板所在水平面的夹角的均值具有相同的绝对值，并且，两个像素区域A和B分别对应的液晶分子的长轴与对向基板或阵列基板所在水平面的夹角的均值之和为零，即相互抵消。
例如，在另一种实施方式中，在本发明实施例提供的上述液晶显示面板中，为了使液晶层中的液晶分子在两个像素区域中具有各自不同的倾斜状态，在每个像素单元中，一个像素区域对应的对向基板和阵列基板面向液晶层一侧的表面均可以设置为倾斜面，且倾斜面的高点为取向膜的摩擦开始的一侧，如图2c和图2d所示，像素区域B对应的对向基板10和阵列基板20面向液晶层30一侧的表面分别设置为倾斜面，且倾斜面的高点为取向膜40的摩擦开始的一侧。
为了保证两个像素区域分别对应的液晶分子的长轴与对向基板或阵列基板所在水平面的夹角的均值具有相同的绝对值，且和为零，如图2c和图2d所示，当像素区域B对应的对向基板10和阵列基板20面向液晶层30一侧的表面分别设置为倾斜面时，液晶层30中倾斜面附近的液晶分子的长轴与该倾斜面的夹角大小为γ，该倾斜面相对于对向基板10和阵列基板20所在水平面的倾斜角α均可以设置为液晶层30中倾斜面附近的液晶分子的长轴与倾斜面的夹角大小的2倍，即该倾斜面相对于对向基板10和阵列基板20所在水平面的倾斜角α＝2γ。当该倾斜面相对于对向基板10和阵列基板20所在水平面的倾斜角α均为2γ时，则倾斜面附近的液晶分子的长轴相对于对向基板10和阵列基板20所在水平面的夹角均为γ，像素区域B中的液晶分子的长轴相对于水平面平均下来的夹角为(γ+γ)/2＝γ，可以与像素区域A中的液晶分子的长轴相对于阵列基板20所在水平面的夹角-γ相抵消。即两个像素区域A和B分别对应的液晶分子的长轴与对向基板和阵列基板所在水平面的夹角的均值具有相同的绝对值，并且，两个像素区域A和B分别对应的液晶分子的长轴与对向基板和阵列基板所在水平面的夹角的均值之和为零，即相互抵消。可见，对向基板10和阵列基板20的倾斜面的倾斜角之和为倾斜面附近的液晶分子的长轴与倾斜面的夹角大小的4倍，即α+α＝4γ。
例如，在另一种实施方式中，在本发明实施例提供的上述液晶显示面板 中，为了使液晶层中的液晶分子在两个像素区域中具有各自不同的倾斜状态，在每个像素单元中，一个像素区域对应的对向基板面向液晶层一侧的表面可以设置为倾斜面，另一像素区域对应的阵列基板面向液晶层一侧的表面为倾斜面，且该倾斜面的高点为取向膜的摩擦开始的一侧，如图2e所示，像素区域A对应的对向基板10面向液晶层30一侧的表面设置为倾斜面，像素区域B对应的阵列基板20面向液晶层30一侧的表面设置为倾斜面，且倾斜面的高点为取向膜40的摩擦开始的一侧。
并且，为了保证两个像素区域分别对应的液晶分子的长轴与对向基板或阵列基板所在水平面的夹角的均值具有相同的绝对值，且和为零，该倾斜面相对于对向基板10和阵列基板20所在水平面的倾斜角β可以设置为液晶层30中倾斜面附近的液晶分子长轴与倾斜面的夹角的2倍。
在上述三种实施方式中，第二种实施方式和第三种实施方式相对于第一种实施方式，可以更好地使液晶层中的液晶分子分别在两个像素区域A和B倾斜，但第二种实施方式和第三种实施方式的制作工艺都较复杂，在具体实施时，具体选用哪种实施方式可以根据实际需要进行设计，在此不做限定。
如图2a所示，需要设置倾斜面的倾斜角为倾斜面附近的液晶分子长轴与倾斜面的夹角的4倍，又由于倾斜面附近的液晶分子长轴与倾斜面的夹角为液晶分子的预倾角且一般设置为1度至5度，因此，该倾斜面相对于对向基板和阵列基板所在水平面的倾斜角应设置为4度至20度。
如图2c至图2e所示，需要设置倾斜面的倾斜角为倾斜面附近的液晶分子长轴与倾斜面的夹角的2倍，又由于倾斜面附近的液晶分子长轴与倾斜面的夹角为液晶分子的预倾角且一般设置为1度至5度，因此，该倾斜面相对于对向基板和阵列基板所在水平面的倾斜角应设置为2度至10度。
例如，在本发明实施例提供的上述液晶显示面板中，为了使阵列基板具有倾斜面，阵列基板包括至少一膜层，该膜层具有使一个像素区域对应的阵列基板面向液晶层一侧的表面为倾斜面的凸起结构，如图2a所示。例如，阵列基板20上的平坦层具有使像素区域B对应的阵列基板20面向液晶层一侧的表面为倾斜面的凸起结构28。同样地，也可以是其他膜层具有产生倾斜面的凸起结构，在此不做赘述。
例如，为了使对向基板具有倾斜面，对向基板包括至少一膜层，该膜层 具有使一个像素区域对应的对向基板面向液晶层一侧的表面为倾斜面的凸起结构。如图2d所示，在对向基板10上的平坦层具有使像素区域B对应的对向基板10面向液晶层一侧的表面为倾斜面的凸起结构29。同样地，也可以是其他膜层具有产生倾斜面的凸起结构，在此不做赘述。
在本发明实施例提供的上述液晶显示面板中，具有凸起结构的膜层可以为绝缘层、半导体层或导电层，即凸起结构的材料可以为绝缘层材料，半导体层材料，或者导电层材料。例如，半导体层材料包括a-Si或IGZO等，导电层材料包括金属铝、金属铜、ITO或IZO等，绝缘层材料包括氮化硅、氧化硅或有机树脂等。
在本发明实施例提供的上述液晶显示面板中，如图2d所示，在每个像素单元中，倾斜面高点O处于两个像素区域分界处，不具有倾斜面的像素区域的膜层具有与高点O膜层相同的厚度，使膜层具有连续的图形，这种连续的具有倾斜面的膜层可以减少每个像素单元中间部分的漏光。
例如，本发明实施例提供的液晶显示面板的阵列基板上还具有诸如有源层、像素电极层、绝缘层和公共电极层等其他膜层结构，以及形成有薄膜晶体管、栅线、数据线等结构，这些具体结构可以有多种实现方式，在此不做限定。
本发明实施例还提供了一种本发明实施例提供的上述液晶显示面板的制作方法，由于该方法解决问题的原理与前述液晶显示面板相似，因此该方法的实施可以参见液晶显示面板的实施，重复之处不再赘述。
例如，本发明实施例提供的液晶显示面板的制作方法，如图3所示，包括以下步骤：
S301、在阵列基板或对向基板上形成一膜层；
S302、对阵列基板或对向基板的膜层进行刻蚀，形成具有连续凹凸结构的膜层图形；
S303、对具有连续凹凸结构图形的膜层中除将要形成倾斜面之外的其他区域进行刻蚀，去除掉除将要形成倾斜面之外的其他区域，以形成具有倾斜面的膜层。
例如，步骤S302中的刻蚀为缓慢刻蚀，横向刻蚀速率大于纵向刻蚀速率。例如，步骤S303中的刻蚀为快速刻蚀，横向刻蚀速率小于纵向刻蚀速 率。
例如，本发明实施例提供的上述液晶显示面板的制作方法中，在执行步骤S303之后，还包括，在具有倾斜面的膜层上形成取向膜的图形。
下面以一个具体的实例详细的说明本发明实施例提供的液晶显示面板中阵列基板的制作方法，如图4所示，包括以下步骤：
S401、在衬底基板上依次形成包括栅极、栅绝缘层、源漏极和钝化层的图形；
例如，如图5a所示，首先在衬底基板21上依次形成包括栅极22、栅绝缘层23的图形，然后在形成栅绝缘层23的衬底基板上形成与栅极22绝缘的相对而置的源漏极24，之后在源漏极24上形成钝化层25的图形；
S402、在形成有钝化层的衬底基板上形成平坦层，在平坦层上形成光刻胶并对光刻胶进行曝光和显影。
例如，如图5b所示，形成平坦层26。光刻胶(未示出)形成在平坦层26上。在对光刻胶进行曝光和显影之后形成光刻胶开口部分，该光刻胶开口部分对应于凸起结构之外的区域。
S403、对平坦层进行刻蚀，形成具有连续凹凸结构的平坦层图形；
例如，以曝光、显影后的光刻胶作为掩模，对平坦层进行蚀刻。控制蚀刻工艺，使得横向刻蚀速率大于纵向刻蚀速率，从而横向刻蚀宽度大于光刻胶开口部分，如图5c所示，在每个像素单元中，形成具有连续凹凸结构27的平坦层的图形。
例如，进行缓慢刻蚀，以形成具有连续凹凸结构27的平坦层的图形
S404、对具有连续凹凸结构图形的平坦层中除将要形成凸起结构之外的其他区域进行刻蚀，去除掉除将要形成凸起结构之外的其他区域，以形成具有凸起结构的平坦层；
例如，对具有连续凹凸结构27的平坦层中除将要形成凸起结构之外的其他区域进行快速刻蚀，去除掉除将要形成凸起结构之外的其他区域，以形成具有凸起结构28的平坦层的图形；
S405、在形成具有凸起结构的平坦层上形成取向膜的图形；
为了使液晶层中的液晶分子具有相反摩擦方向，如图5e所示，需要在形成具有凸起结构28的平坦层上形成取向膜40的图形。
另外，在制作阵列基板的过程中一般还会制作诸如有源层、像素电极层、绝缘层和公共电极层等其他膜层结构，以及薄膜晶体管、栅线、数据线等结构，在此不做赘述。
至此，经过实例提供的上述步骤S401至S405制作出了本发明实施例提供的上述液晶显示面板中的阵列基板。
本发明实施例还提供了一种显示装置，包括本发明实施例提供的上述液晶显示面板，该显示装置可以为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。对于该显示装置的其它必不可少的组成部分均为本领域的普通技术人员应该理解具有的，在此不做赘述，也不应作为对本发明的限制。该显示装置的实施可以参见上述液晶显示面板的实施例，重复之处不再赘述。
以上所述仅是本发明的示范性实施方式，而非用于限制本发明的保护范围，本发明的保护范围由所附的权利要求确定。
本申请要求于2014年12月19日递交的第201410806465.6号中国专利申请的优先权，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。

Claims (14)

  1. 一种液晶显示面板，包括：相对设置的对向基板和阵列基板，以及填充在所述对向基板和阵列基板之间的液晶层，在所述对向基板和所述阵列基板相对的表面分别设置有具有相反摩擦方向的取向膜，所述液晶显示面板具有多个呈阵列排布的像素单元，其中：
    在每个所述像素单元沿着所述取向膜的摩擦方向分为两个像素区域；
    在每个所述像素单元中，至少任一所述像素区域对应的所述对向基板或所述阵列基板面向所述液晶层一侧的表面为倾斜面，使两个所述像素区域分别对应的液晶层中的液晶分子的长轴与所述对向基板和阵列基板所在水平面的夹角的均值具有相同的绝对值，且和为零。
  2. 如权利要求1所述的液晶显示面板，其中，在每个所述像素单元中的两个所述像素区域大小相等。
  3. 如权利要求2所述的液晶显示面板，其中，在每个所述像素单元中，一个所述像素区域对应的所述对向基板或阵列基板面向所述液晶层一侧的表面为倾斜面，且所述倾斜面的高点为取向膜的摩擦开始的一侧；
    所述倾斜面相对于所述对向基板或阵列基板所在水平面的倾斜角为所述倾斜面附近的液晶分子长轴与所述倾斜面的夹角的4倍。
  4. 如权利要求3所述的液晶显示面板，其中，所述倾斜面的倾斜角为4度至20度。
  5. 如权利要求2所述的液晶显示面板，其中，在每个所述像素单元中，一个所述像素区域对应的所述对向基板和阵列基板面向所述液晶层一侧的表面均为倾斜面，且所述倾斜面的高点为取向膜的摩擦开始的一侧；
    所述倾斜面相对于所述对向基板和阵列基板所在水平面的倾斜角为倾斜面附近的液晶分子长轴与所述倾斜面的夹角的2倍。
  6. 如权利要求2所述的液晶显示面板，其中，在每个所述像素单元中，一个所述像素区域对应的所述对向基板面向所述液晶层一侧的表面为倾斜面，另一像素区域对应的所述阵列基板面向所述液晶层一侧的表面为倾斜面，且所述倾斜面的高点为取向膜的摩擦开始的一侧；
    所述倾斜面相对于所述对向基板和阵列基板所在水平面的倾斜角为倾斜 面附近的液晶分子长轴与所述倾斜面的夹角的2倍。
  7. 如权利要求5或6所述的液晶显示面板，其中，所述倾斜面的倾斜角为2度至10度。
  8. 如权利要求1-7任一项所述的液晶显示面板，其中，所述阵列基板包括至少一膜层，所述膜层具有产生所述倾斜面的凸起结构；和/或
    所述对向基板包括至少一膜层，所述膜层具有产生所述倾斜面的凸起结构。
  9. 如权利要求8所述的液晶显示面板，其中，具有凸起结构的所述膜层为绝缘层、半导体层或导电层。
  10. 如权利要求9所述的液晶显示面板，其中，所述绝缘层材料包括氮化硅、氧化硅或有机树脂。
  11. 如权利要求8所述的液晶显示面板，其中，在每个像素单元中，倾斜面高点处于两个像素区域分界的基板中，不具有倾斜面的像素区域的膜层具有与所述高点膜层相同的厚度，使所述膜层具有连续的图形。
  12. 一种显示装置，包括如权利要求1-11任一项所述的液晶显示面板。
  13. 一种如权利要求1-11任一项所述液晶显示面板的制作方法，包括：
    在阵列基板或对向基板上形成一膜层；
    对所述阵列基板或对向基板上的膜层进行刻蚀，形成具有连续凹凸结构的膜层图形；
    对具有连续凹凸结构图形的膜层中除将要形成倾斜面之外的其他区域进行刻蚀，去除掉除将要形成倾斜面之外的其他区域，以形成具有倾斜面的膜层。
  14. 如权利要求13所述的方法，还包括在所述具有倾斜面的膜层上形成取向膜的图形。
PCT/CN2015/078258 2014-12-19 2015-05-05 液晶显示面板、其制作方法及显示装置 WO2016095404A1 (zh)

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