WO2018205314A1 - 液晶显示面板及液晶显示器 - Google Patents

液晶显示面板及液晶显示器 Download PDF

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Publication number
WO2018205314A1
WO2018205314A1 PCT/CN2017/085937 CN2017085937W WO2018205314A1 WO 2018205314 A1 WO2018205314 A1 WO 2018205314A1 CN 2017085937 W CN2017085937 W CN 2017085937W WO 2018205314 A1 WO2018205314 A1 WO 2018205314A1
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Prior art keywords
electrode layer
liquid crystal
substrate
crystal display
light
Prior art date
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PCT/CN2017/085937
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English (en)
French (fr)
Inventor
陈帅
Original Assignee
深圳市华星光电技术有限公司
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Filing date
Publication date
Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to JP2019561980A priority Critical patent/JP6976353B2/ja
Priority to EP17909178.0A priority patent/EP3623864A4/en
Priority to KR1020197036375A priority patent/KR102252148B1/ko
Priority to US15/544,881 priority patent/US10359673B2/en
Publication of WO2018205314A1 publication Critical patent/WO2018205314A1/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
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
    • G02F1/133707—Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134345—Subdivided pixels, e.g. for grey scale or redundancy
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134381—Hybrid switching mode, i.e. for applying an electric field with components parallel and orthogonal to the 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
    • G02F1/1343—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
    • 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
    • G02F2201/122—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode having a particular pattern
    • 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

  • the present invention relates to the field of liquid crystal display technologies, and in particular, to a liquid crystal display panel and a liquid crystal display.
  • liquid crystal display since the liquid crystal display panel itself does not emit light, the backlight provided by the backlight module must be used to display the image on the liquid crystal display.
  • a liquid crystal display device of the prior art includes a liquid crystal display panel 101, upper polarizing plates 1021 and lower polarizing plates 1022 located on upper and lower surfaces of the liquid crystal display panel 101, and a lower polarizing plate 1022 located away from the liquid crystal display panel 101.
  • the backlight 103 on the side of the liquid crystal display panel 101; wherein the liquid crystal display panel 101 includes an array substrate 1011, a color filter substrate 1012, and a liquid crystal layer disposed between the array substrate 1011 and the color filter substrate 1012. 1013.
  • the liquid crystal display in the existing structure When the liquid crystal display in the existing structure is displayed in a dark state, light leakage often occurs. For example, a small portion of the light emitted by the backlight 103 of the liquid crystal display is not incident perpendicularly to the liquid crystal display panel 101, and the portion of the light is polarized by the lower polarizer 1022 and the liquid crystal molecules in the liquid crystal layer 1013.
  • the optical axis is incident on the liquid crystal layer 1013 at an angle; wherein, for the liquid crystal molecules in the liquid crystal display panel 101, when the liquid crystal display is displayed in a dark state, the optical axis direction thereof is perpendicular to the liquid crystal display panel 101 arrangement.
  • the linearly polarized light incident obliquely to the liquid crystal layer 1013 undergoes a birefringence effect to form elliptically polarized light, which cannot be completely absorbed when it is incident on the upper polarizer 1021, thereby causing The light leakage occurs when the liquid crystal display is displayed in a dark state, and the contrast is further limited.
  • An object of the present invention is to provide a liquid crystal display panel capable of improving dark state light leakage and improving display effect.
  • Another object of the present invention is to provide a liquid crystal display using the above liquid crystal display panel.
  • the present invention provides a liquid crystal display panel comprising a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer between the first substrate and the second substrate, wherein a display area of the liquid crystal display panel is provided a plurality of sub-pixel regions arranged in a matrix and a light-shielding region between two adjacent sub-pixel regions, wherein a first electrode layer is disposed on a side of the first substrate adjacent to the liquid crystal layer, the first The electrode layer corresponds to the sub-pixel region and the light-shielding region, and the second substrate is disposed adjacent to the liquid crystal layer with a second electrode layer and a third electrode layer that are independent of each other, and the second electrode layer corresponds to In the sub-pixel region, the third electrode layer corresponds to the light-shielding region, and the third electrode layer is provided with a through hole.
  • the light shielding protrusion is further disposed on the second substrate, the light shielding protrusion corresponds to the light shielding area, and the third electrode layer covers the light shielding protrusion.
  • the light-shielding protrusion has a T shape, and a convex portion of the light-shielding protrusion protrudes from the through hole.
  • the third electrode layer includes a plurality of strip electrodes arranged at intervals, and each of the strip electrodes is provided with a plurality of the through holes.
  • the light shielding protrusion extends along the length direction of the strip electrode.
  • the black matrix is further disposed on the first substrate, the black matrix corresponds to the light shielding region, and the first electrode layer covers the black matrix.
  • the first substrate is a color film substrate
  • the first electrode layer is a common electrode layer
  • the second substrate is an array substrate
  • the second electrode layer is a pixel electrode layer.
  • the first substrate is an array substrate
  • the first electrode layer is a pixel electrode layer
  • the second substrate is a color film substrate
  • the second electrode layer is a common electrode layer.
  • the first electrode layer and the second electrode layer are both made of a transparent conductive material.
  • the present invention provides a liquid crystal display including a backlight and a liquid crystal display panel, the backlight and the liquid crystal display panel are stacked, the liquid crystal display panel includes a first substrate and a second substrate disposed opposite to each other, and is located at the a liquid crystal layer between the first substrate and the second substrate, wherein the display area of the liquid crystal display panel is provided with a plurality of sub-pixel regions arranged in a matrix and a light shielding region between the adjacent sub-pixel regions Providing a first electrode layer on a side of the first substrate adjacent to the liquid crystal layer, The first electrode layer corresponds to the sub-pixel region and the light-shielding region, and the second substrate is disposed adjacent to the liquid crystal layer with a second electrode layer and a third electrode layer independent of each other, the second The electrode layer corresponds to the sub-pixel region, and the third electrode layer corresponds to the light-shielding region, wherein the third electrode layer is provided with a through hole.
  • the light shielding protrusion is further disposed on the second substrate, the light shielding protrusion corresponds to the light shielding area, and the third electrode layer covers the light shielding protrusion.
  • the light-shielding protrusion has a T shape, and a convex portion of the light-shielding protrusion protrudes from the through hole.
  • the third electrode layer includes a plurality of strip electrodes arranged at intervals, and each of the strip electrodes is provided with a plurality of the through holes.
  • the light shielding protrusion extends along the length direction of the strip electrode.
  • the black matrix is further disposed on the first substrate, the black matrix corresponds to the light shielding region, and the first electrode layer covers the black matrix.
  • the first substrate is a color film substrate
  • the first electrode layer is a common electrode layer
  • the second substrate is an array substrate
  • the second electrode layer is a pixel electrode layer.
  • the first substrate is an array substrate
  • the first electrode layer is a pixel electrode layer
  • the second substrate is a color film substrate
  • the second electrode layer is a common electrode layer.
  • the first electrode layer and the second electrode layer are both made of a transparent conductive material.
  • a first electrode layer is disposed on a side of the first substrate adjacent to the liquid crystal layer, the first electrode layer corresponds to the sub-pixel region and the light-shielding region, and the second substrate is disposed adjacent to the liquid crystal layer with the second electrode independent of each other.
  • a third electrode layer corresponding to the sub-pixel region, the third electrode layer corresponding to the light-shielding region, wherein the third electrode layer is provided with a through hole.
  • FIG. 1 is a schematic cross-sectional view of a prior art liquid crystal display panel.
  • FIG. 2 is a schematic cross-sectional view showing the liquid crystal display panel of the present invention when it is not energized.
  • FIG. 3 is a schematic cross-sectional view of the liquid crystal display panel of FIG. 2 in a dark state.
  • FIG. 4 is a schematic structural diagram of a third electrode layer according to an embodiment of the present invention.
  • Fig. 5 is a reverse plan view of liquid crystal molecules.
  • FIG. 6 is a schematic structural diagram of a liquid crystal display according to an embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view of the liquid crystal display panel of the present invention when it is not energized.
  • the liquid crystal display panel of the present invention includes a first substrate 21, a second substrate 22, and a liquid crystal layer 23.
  • the display area of the liquid crystal display panel is provided with a plurality of sub-pixel regions 201 arranged in a matrix and a light blocking region 202 between the adjacent sub-pixel regions 201.
  • the first substrate 21 is disposed opposite to the second substrate 22 , and the liquid crystal layer 23 is filled between the first substrate 21 and the second substrate 22 .
  • the liquid crystal layer 23 includes liquid crystal molecules 230 having a negative dielectric anisotropy and a plurality of reactive monomers mixed in the liquid crystal molecules 230.
  • the liquid crystal molecules 230 are liquid crystal materials having a deflection orientation characteristic which is generated in a specific direction by applying a driving voltage, which achieves a different deflection orientation by a threshold value of the applied driving voltage, and liquid crystal when no voltage is applied to the liquid crystal display panel.
  • the liquid crystal molecules 230 of the layer 23 are vertically oriented;
  • the reactive monomer is a polymerizable monomer, which includes an acrylate resin monomer molecule, a methacrylate resin monomer molecule, a vinyl resin monomer molecule, and a vinyloxy group. Any combination of resin monomer molecules, epoxy resin monomer molecules, and the like.
  • a first electrode layer 211 is disposed on a side of the first substrate 21 adjacent to the liquid crystal layer 23 , and the first electrode layer 211 corresponds to the sub-pixel region 201 and the light shielding region 202 .
  • the second substrate 22 is disposed adjacent to the liquid crystal layer 23 with a second electrode layer 222 and a third electrode that are independent of each other. Layer 223. That is, the voltages applied to the second electrode layer 222 and the third electrode layer 223 can be separately controlled.
  • the second electrode layer 222 corresponds to the sub-pixel region 201
  • the third electrode layer 223 corresponds to the light-shielding region 202
  • the third electrode layer 223 is provided with a through hole (not numbered). That is, the liquid crystal layer 23 is interposed between the first electrode layer 211 and the second electrode layer 222 / the third electrode layer 223.
  • FIG. 3 is a schematic cross-sectional view of a liquid crystal display panel in a dark state according to the present invention.
  • the liquid crystal display panel is in a dark state (ie, in an energized state)
  • the first electrode layer 211 and the third electrode layer 223 are energized, and the second electrode layer 222 is powered off.
  • the liquid crystal molecules 230 between the first electrode layer 211 and the second electrode layer 222 have a driving voltage, that is, the liquid crystal molecules 230 of the sub-pixel region 201 maintain a vertical orientation, and the sub-pixel region
  • the first electrode layer 211 and the third electrode layer 223 are voltage-loaded to form a certain voltage difference between the first electrode layer 211 and the third electrode layer 223.
  • the liquid crystal molecules 230 are deflected by the voltage difference (driving voltage). Meanwhile, since the third electrode layer 223 is provided with a through hole, the liquid crystal molecules 230 in the region near the through hole are deflected by the boundary electric field, and the liquid crystal molecules 230 are deflected away from the through hole, that is, in the liquid crystal layer 23.
  • the liquid crystal molecules 230 will have multiple tilting directions, resulting in multiple fields to achieve multi-domain segmentation.
  • the first substrate 21 may be a color film substrate, the first electrode layer 211 is a common electrode layer; correspondingly, the second substrate 22 is an array substrate, The two electrode layer 222 is a pixel electrode layer.
  • the second substrate 22 may include a glass substrate 226 and a color resist layer 225 disposed on the glass substrate 226.
  • the color resist layer 225 is interposed between the glass substrate 226 and the second electrode layer 222. / between the third electrode layers 223. It can be understood that the color resist layer 225 includes a red resist, a green resist, and a blue resist.
  • the color resistance colors of adjacent sub-pixel regions 201 are different.
  • a polarizer (not shown) is disposed on the first substrate 21 and the second substrate 22, respectively, and the polarizer on the first substrate 21 and the second substrate 22
  • the polarizing directions of the polarizers are perpendicular to each other, that is, the polarizing directions of the two polarizers are different by 90 degrees.
  • the data lines pass through the second substrate 22 (array substrate)
  • the via hole supplies power to the second electrode layer 222 (pixel electrode), and the third electrode 223 is powered by a trace on the periphery of the second substrate 22.
  • the second substrate 22 is further provided with a light shielding protrusion 24 .
  • the light shielding protrusion 24 corresponds to the light shielding area 202. Specifically, the light-shielding protrusions 24 are disposed above the boundary of adjacent color resists.
  • the third electrode layer 223 covers the light shielding protrusions 24 .
  • the light-shielding protrusions 24 have the following advantages in addition to the light-shielding effect: the space of the light-shielding region 202 is smaller than the space of the sub-pixel region 201, and the liquid crystal molecules 230 located in the light-shielding region 202 are more easily moved to the sub-pixel region by the driving voltage. 201 is deflected to achieve better filtering stray light effects.
  • the light-shielding protrusions 24 are T-shaped, and the convex portions of the light-shielding protrusions 24 protrude from the through holes.
  • the corresponding space above the through hole is the smallest
  • the corresponding space above the third electrode layer 223 is second
  • the corresponding space above the second electrode layer 222 (corresponding to the sub-pixel area 201) is the largest.
  • the purpose of this arrangement is to form a tendency for the liquid crystal molecules 230 to deflect toward the sub-pixel region 201, and the liquid crystal molecules 230 corresponding to the positions of the via holes are deflected toward the outside of the via holes (the regions corresponding to the third electrodes) by the boundary electric field.
  • the liquid crystal molecules 230 corresponding to the three electrode layers 223 are deflected toward the sub-pixel region 201, thereby achieving a better filtering stray light effect.
  • FIG. 4 is a schematic structural diagram of a third electrode layer according to an embodiment of the present invention.
  • the third electrode layer 223 includes a plurality of strip electrodes 227 arranged at intervals, and each of the strip electrodes 227 is provided with a plurality of the through holes 228.
  • the plurality of strip electrodes are electrically connected in one unit.
  • the strip electrode 227 is formed to extend in the Y direction, wherein the X direction is perpendicular to the Y direction. Further, the light-shielding protrusions 24 extend along the length direction of the strip electrodes 227.
  • FIG. 5 is a reverse plan view of liquid crystal molecules.
  • the length of the light-shielding protrusion in the Y direction can be made larger than the length in the X direction. That is, the light-shielding protrusions 24 extend in the longitudinal direction of the strip electrodes. It can be understood that the length of the through hole 228 on the strip electrode 227 in the Y direction is greater than its length in the X direction.
  • a black matrix 25 is further disposed on the first substrate 21, the black matrix 25 corresponds to the light shielding region 202, and the first electrode layer 211 covers the black matrix 25.
  • the black matrix 25 is interposed between the first substrate 21 and the first electrode layer 211. It can be understood that the black matrix 25 can further enhance the shading effect of the liquid crystal display panel.
  • the first substrate 21 may also be an array substrate, and the first electrode layer 211 is a pixel electrode layer; correspondingly, the second substrate 22 is a color film substrate.
  • the second electrode layer 222 is a common electrode layer. That is, at this time, the third electrode layer 23 is disposed on the color filter substrate.
  • the first electrode layer 211 and the second electrode layer 222 are both made of a transparent conductive material.
  • the materials of the first electrode layer 211 and the second electrode layer 222 may be the same or different, and may be, for example, indium tin oxide (ITO), indium zinc oxide (IZO), or the like. Any combination of materials of electrical and electrical conductivity.
  • FIG. 6 is a schematic structural diagram of a liquid crystal display according to an embodiment of the present invention.
  • the present invention also provides a liquid crystal display 500 including a backlight 40 and a liquid crystal display panel 50, and the backlight 50 and the liquid crystal display panel 40 are stacked.
  • the backlight 40 is disposed adjacent to the array substrate of the liquid crystal display panel 50.
  • the backlight 40 provides light to the liquid crystal display panel 50.
  • the liquid crystal display panel 50 is the liquid crystal display panel of any of the above embodiments.

Abstract

一种液晶显示面板（50）和液晶显示器（500），液晶显示面板（50）包括相对设置的第一基板（21）和第二基板（22）、及位于第一基板（21）与第二基板（22）之间的液晶层（23），液晶显示面板（50）的显示区内设有多个呈矩阵状排布的子像素区域（201）和位于两相邻子像素区域（201）之间的遮光区域（202），第一基板（21）邻近液晶层（23）的一侧设置有第一电极层（211），第一电极层（211）对应于子像素区域（201）及遮光区域（202），第二基板（22）邻近液晶层（23）的一侧设置有相互独立的第二电极层（222）和第三电极层（223），第二电极层（222）对应于子像素区域（201），第三电极层（223）对应于遮光区域（202），第三电极层（223）上设置有通孔，能够改善液晶显示面板（50）的暗态漏光问题。

Description

液晶显示面板及液晶显示器
本发明要求2017年5月9日递交的发明名称为“液晶显示面板及液晶显示器”的申请号201710322465.2的在先申请优先权，上述在先申请的内容以引入的方式并入本文本中。
技术领域
本发明涉及液晶显示技术领域，尤其涉及一种液晶显示面板及液晶显示器。
背景技术
液晶显示器(liquid crystal display，简称LCD)中由于液晶显示面板本身不发光，必须借助背光源模组提供的背光源才能使液晶显示器显示影像。
如图1所示，现有技术中的液晶显示器包括液晶显示面板101、分别位于所述液晶显示面板101上下表面的上偏光片1021和下偏光片1022、以及位于所述下偏光片1022背离所述液晶显示面板101一侧的背光源103；其中，所述液晶显示面板101包括阵列基板1011、彩膜基板1012、以及设置于所述阵列基板1011和所述彩膜基板1012之间的液晶层1013。
现有结构中的液晶显示器在暗态显示时，经常会出现漏光现象。例如，对于所述液晶显示器的背光源103发出的光线有少部分光不能垂直入射到所述液晶显示面板101，这部分光经过所述下偏光片1022起偏后与液晶层1013中的液晶分子的光轴呈一定角度入射到所述液晶层1013；其中，对于所述液晶显示面板101中的液晶分子，在所述液晶显示器为暗态显示时，其光轴方向垂直于所述液晶显示面板101排列。由于液晶分子的双折射特性，这部分斜向入射到液晶层1013的线偏振光会发生双折射效应而形成椭圆偏振光，当其入射到所述上偏光片1021时无法被完全吸收，从而导致了液晶显示器在暗态显示时发生漏光现象，并进一步限制了其对比度的提高。
发明内容
本发明的目的在于提供一种液晶显示面板，能够改善暗态漏光，提升显示 效果。
本发明的另一目的在于提供一种采用上述液晶显示面板的液晶显示器。
为了实现上述目的，本发明实施方式提供如下技术方案：
本发明提供一种液晶显示面板，包括相对设置的第一基板和第二基板、及位于所述第一基板与所述第二基板之间的液晶层，所述液晶显示面板的显示区内设有多个呈矩阵状排布的子像素区域和位于两相邻子像素区域之间的遮光区域，所述第一基板邻近所述液晶层的一侧设置有第一电极层，所述第一电极层对应于所述子像素区域及所述遮光区域，所述第二基板邻近所述液晶层的一侧设置有相互独立的第二电极层和第三电极层，所述第二电极层对应于所述子像素区域，所述第三电极层对应于所述遮光区域，其中，所述第三电极层上设置有通孔。
其中，所述第二基板上还设置有遮光突起物，所述遮光突起物对应于所述遮光区域，所述第三电极层覆盖于所述遮光突起物上。
其中，所述遮光突起物呈T形，所述遮光突起物的凸出部分凸出于所述通孔。
其中，所述第三电极层包括多个间隔排布的条状电极，每个条状电极上设置有多个所述通孔。
其中，所述遮光突起物沿所述条状电极长度方向延伸。
其中，所述第一基板上还设置有黑矩阵，所述黑矩阵对应于所述遮光区域，所述第一电极层覆盖所述黑矩阵。
其中，所述第一基板为彩膜基板，所述第一电极层为公共电极层；所述第二基板为阵列基板，所述第二电极层为像素电极层。
其中，所述第一基板为阵列基板，所述第一电极层为像素电极层；所述第二基板为彩膜基板，所述第二电极层为公共电极层。
其中，所述第一电极层和所述第二电极层均采用透明导电材料制成。
本发明提供一种液晶显示器，包括背光源和液晶显示面板，所述背光源与所述液晶显示面板层叠设置，所述液晶显示面板包括相对设置的第一基板和第二基板、及位于所述第一基板与所述第二基板之间的液晶层，所述液晶显示面板的显示区内设有多个呈矩阵状排布的子像素区域和位于两相邻子像素区域之间的遮光区域，所述第一基板邻近所述液晶层的一侧设置有第一电极层，所 述第一电极层对应于所述子像素区域及所述遮光区域，所述第二基板邻近所述液晶层的一侧设置有相互独立的第二电极层和第三电极层，所述第二电极层对应于所述子像素区域，所述第三电极层对应于所述遮光区域，其中，所述第三电极层上设置有通孔。
其中，所述第二基板上还设置有遮光突起物，所述遮光突起物对应于所述遮光区域，所述第三电极层覆盖于所述遮光突起物上。
其中，所述遮光突起物呈T形，所述遮光突起物的凸出部分凸出于所述通孔。
其中，所述第三电极层包括多个间隔排布的条状电极，每个条状电极上设置有多个所述通孔。
其中，所述遮光突起物沿所述条状电极长度方向延伸。
其中，所述第一基板上还设置有黑矩阵，所述黑矩阵对应于所述遮光区域，所述第一电极层覆盖所述黑矩阵。
其中，所述第一基板为彩膜基板，所述第一电极层为公共电极层；所述第二基板为阵列基板，所述第二电极层为像素电极层。
其中，所述第一基板为阵列基板，所述第一电极层为像素电极层；所述第二基板为彩膜基板，所述第二电极层为公共电极层。
其中，所述第一电极层和所述第二电极层均采用透明导电材料制成。
本发明实施例具有如下优点或有益效果：
本发明中在第一基板邻近液晶层的一侧设置有第一电极层，第一电极层对应于子像素区域及遮光区域，第二基板邻近液晶层的一侧设置有相互独立的第二电极层和第三电极层，第二电极层对应于子像素区域，第三电极层对应于遮光区域，其中，第三电极层上设置有通孔。液晶显示面板处于暗态时，位于所述第一电极层和所述第三电极层之间的液晶分子在电压差(驱动电压)的作用下发生偏转，达到多域分割的效果，在上下基板垂直正交的偏光片的作用下被滤掉，由此改善了液晶显示面板的暗态漏光问题。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述 中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是现有技术液晶显示面板剖面结构示意图。
图2为本发明液晶显示面板未通电时剖面示意图。
图3为图2所示液晶显示面板暗态时剖面示意图。
图4为本发明实施例提供的第三电极层的结构示意图。
图5为液晶分子倒向俯视图。
图6为本发明实施例提供的液晶显示器结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动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。
请参阅图2，图2为本发明液晶显示面板未通电时剖面示意图。本发明的液晶显示面板包括第一基板21、第二基板22、液晶层23。所述液晶显示面板的显示区内设有多个呈矩阵状排布的子像素区域201和位于两相邻子像素区域201之间的遮光区域202。所述第一基板21与所述第二基板22相对设置，所述液晶层23填充于所述第一基板21和所述第二基板22之间。本实施例优选液晶层23包括介电各向异性(DielectricAnisotropy)为负的液晶分子230以及混合于液晶分子230之中的多个反应单体。其中，液晶分子230为具有通过施加驱动电压即在特定方向上发生偏转取向特性的液晶材料，其通过施加的驱动电压的阀值以实现不同的偏转取向，并且在液晶显示面板未施加电压时液晶层23的液晶分子230为竖直取向；反应单体为聚合性单体，其包括丙烯酸酯类树脂单体分子、甲基丙烯酸酯类树脂单体分子、乙烯基树脂单体分子、乙烯氧基树脂单体分子、环氧树脂单体分子等的任意组合。
所述第一基板21邻近所述液晶层23的一侧设置有第一电极层211，所述第一电极层211对应于所述子像素区域201及所述遮光区域202。所述第二基板22邻近所述液晶层23的一侧设置有相互独立的第二电极层222和第三电极 层223。也就是说，可以分别控制加载在所述第二电极层222和所述第三电极层223上的电压。其中，所述第二电极层222对应于所述子像素区域201，所述第三电极层223对应于所述遮光区域202，所述第三电极层223上设置有通孔(未编号)。也就是说，所述液晶层23介于所述第一电极层211与所述第二电极层222/所述第三电极层223之间。
请参阅图3。图3为本发明液晶显示面板暗态时剖面示意图。当液晶显示面板处于暗态时(即通电状态)，所述第一电极层211和所述第三电极层223通电，所述第二电极层222断电。此时，所述第一电极层211和所述第二电极层222之间的液晶分子230由于没有驱动电压的作用，即子像素区域201的液晶分子230保持竖直取向，所述子像素区域201不透光；所述第一电极层211和所述第三电极层223皆有电压加载，形成一定的电压差，位于所述第一电极层211和所述第三电极层223之间的液晶分子230在电压差(驱动电压)的作用下发生偏转。同时，由于所述第三电极层223上设置有通孔，通孔附近的区域的液晶分子230会在边界电场的作用下，液晶分子230向偏离通孔的方向偏转，即液晶层23中的液晶分子230会具有多个倾倒方向，从而产生多个场域以达到多域分割的效果。当有杂散光经过液晶分子230层时，会经过各对应的子像素区域201的液晶分子230的长轴，入射光的偏振态不发生改变，在上下基板垂直正交的偏光片的作用下被滤掉，由此改善了液晶显示面板的暗态漏光问题。
本发明一种可能的实现方式中，所述第一基板21可以为彩膜基板，所述第一电极层211为公共电极层；相应的，所述第二基板22为阵列基板，所述第二电极层222为像素电极层。具体的，所述第二基板22可以包括玻璃基板226及设置于所述玻璃基板226上的色阻层225，所述色阻层225介于所述玻璃基板226和所述第二电极层222/第三电极层223之间。可以理解的是，所述色阻层225包括红色阻、绿色阻和蓝色阻。相邻子像素区域201的色阻颜色不相同。此外，本领域技术人员可以理解的是，第一基板21上和第二基板22上分别还设置有偏光片(图未示出)，第一基板21上的偏光片与第二基板22上的偏光片的偏光方向相互垂直，即两个偏光片的偏光方向相差90度。
进一步具体的，在该实施例中，数据线经过第二基板22(阵列基板)上 的via hole(过孔)为所述第二电极层222(像素电极)供电，第三电极223由第二基板22外围的走线进行供电。
本发明一种可能的实现方式中，所述第二基板22上还设置有遮光突起物24。所述遮光突起物24对应于所述遮光区域202。具体的，所述遮光突起物24设置于相邻色阻的交界处上方。所述第三电极层223覆盖于所述遮光突起物24上。所述遮光突起物24除遮光作用外还有如下用处：使得遮光区域202的空间较子像素区域201的空间小，位于遮光区域202的液晶分子230在驱动电压的作用下更容易向子像素区域201偏转，从而实现更好的过滤杂光效果。
优选的，所述遮光突起物24呈T形，所述遮光突起物24的凸出部分凸出于所述通孔。可以理解是的，通孔上方对应的空间最小，第三电极层223上方对应的空间次之，第二电极层222上方对应的空间(对应于子像素区域201)最大。这样设置的目的在于，可以形成液晶分子230向子像素区域201偏转的趋势，通孔对应位置的液晶分子230会在边界电场的作用下偏向通孔外侧(第三电极对应的区域)偏转，第三电极层223对应的液晶分子230会偏向子像素区域201偏转，从而实现更好的过滤杂光效果。
具体的，请参阅图4，图4为本发明实施例提供的第三电极层的结构示意图。所述第三电极层223包括多个间隔排布的条状电极227，每个条状电极227上设置有多个所述通孔228。所述多个条状电极电性连接成一个整体。所述条状电极227沿Y方向延伸而成，其中，X方向与Y方向垂直。更进一步的，所述遮光突起物24沿所述条状电极227的长度方向延伸。
需要说明的是，在液晶显示面板的实际使用过程中相比于X方向和Y方向的漏光情况，X方向的漏光更值得被关注。请结合参阅图5，图5为液晶分子倒向俯视图。在实际的设计过程中，应当确保液晶分子230更多的倒向X方向，Y方向的偏转可以相对少一些。因而，对于遮光凸起物24结构的上可以使得遮光突起的在Y方向的长度大于其在X方向的长度。即所述遮光突起物24沿所述条状电极长度方向延伸。可以理解的是，所述条状电极227上的所述通孔228在Y方向的长度大于其在X方向的长度。
进一步的，所述第一基板21上还设置有黑矩阵25，所述黑矩阵25对应于所述遮光区域202，所述第一电极层211覆盖所述黑矩阵25。所述黑矩阵 25介于所述第一基板21和所述第一电极层211之间。可以理解的是，所述黑矩阵25可以进一步增强液晶显示面板的遮光效果。
本发明另一种可能的实现方式中，所述第一基板21还可以为阵列基板，所述第一电极层211为像素电极层；相应的，所述第二基板22为彩膜基板，所述第二电极层222为公共电极层。也就是说，此时所述第三电极层23设置于彩膜基板上。可以理解的是，所述第一电极层211和所述第二电极层222均采用透明导电材料制成。进一步的，所述第一电极层211和所述第二电极层222的材料可以相同也可以不相同，例如可以为氧化铟锡(ITO)、氧化铟锌(IZO)或者是其他同时具有透光性和导电性的材料的任意组合。
请参阅图6。图6为本发明实施例提供的液晶显示器结构示意图。本发明还提供一种液晶显示器500，所述液晶显示器500包括背光源40和液晶显示面板50，所述背光源50与所述液晶显示面板40层叠设置。具体的，所述背光源40靠近液晶显示面板50的阵列基板设置。所述背光源40为所述液晶显示面板50提供光线。其中，所述液晶显示面板50为上述任一实施例的液晶显示面板。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上所述的实施方式，并不构成对该技术方案保护范围的限定。任何在上述实施方式的精神和原则之内所作的修改、等同替换和改进等，均应包含在该技术方案的保护范围之内。

Claims (18)

  1. 一种液晶显示面板，其中，包括相对设置的第一基板和第二基板、及位于所述第一基板与所述第二基板之间的液晶层，所述液晶显示面板的显示区内设有多个呈矩阵状排布的子像素区域和位于两相邻子像素区域之间的遮光区域，所述第一基板邻近所述液晶层的一侧设置有第一电极层，所述第一电极层对应于所述子像素区域及所述遮光区域，所述第二基板邻近所述液晶层的一侧设置有相互独立的第二电极层和第三电极层，所述第二电极层对应于所述子像素区域，所述第三电极层对应于所述遮光区域，其中，所述第三电极层上设置有通孔。
  2. 如权利要求1所述的液晶显示面板，其中，所述第二基板上还设置有遮光突起物，所述遮光突起物对应于所述遮光区域，所述第三电极层覆盖于所述遮光突起物上。
  3. 如权利要求2所述的液晶显示面板，其中，所述遮光突起物呈T形，所述遮光突起物的凸出部分凸出于所述通孔。
  4. 如权利要求2所述的液晶显示面板，其中，所述第三电极层包括多个间隔排布的条状电极，每个条状电极上设置有多个所述通孔。
  5. 如权利要求4所述的液晶显示面板，其中，所述遮光突起物沿所述条状电极长度方向延伸。
  6. 如权利要求1所述的液晶显示面板，其中，所述第一基板上还设置有黑矩阵，所述黑矩阵对应于所述遮光区域，所述第一电极层覆盖所述黑矩阵。
  7. 如权利要求1所述的液晶显示面板，其中，所述第一基板为彩膜基板，所述第一电极层为公共电极层；所述第二基板为阵列基板，所述第二电极层为像素电极层。
  8. 如权利要求1所述的液晶显示面板，其中，所述第一基板为阵列基板，所述第一电极层为像素电极层；所述第二基板为彩膜基板，所述第二电极层为公共电极层。
  9. 如权利要求1所述的液晶显示面板，其中，所述第一电极层和所述第二电极层均采用透明导电材料制成。
  10. 一种液晶显示器，其中，包括背光源和液晶显示面板，所述背光源与所述液晶显示面板层叠设置，所述液晶显示面板包括相对设置的第一基板和第二基板、及位于所述第一基板与所述第二基板之间的液晶层，所述液晶显示面板的显示区内设有多个呈矩阵状排布的子像素区域和位于两相邻子像素区域之间的遮光区域，所述第一基板邻近所述液晶层的一侧设置有第一电极层，所述第一电极层对应于所述子像素区域及所述遮光区域，所述第二基板邻近所述液晶层的一侧设置有相互独立的第二电极层和第三电极层，所述第二电极层对应于所述子像素区域，所述第三电极层对应于所述遮光区域，其中，所述第三电极层上设置有通孔。
  11. 如权利要求10所述的液晶显示器，其中，所述第二基板上还设置有遮光突起物，所述遮光突起物对应于所述遮光区域，所述第三电极层覆盖于所述遮光突起物上。
  12. 如权利要求11所述的液晶显示器，其中，所述遮光突起物呈T形，所述遮光突起物的凸出部分凸出于所述通孔。
  13. 如权利要求11所述的液晶显示器，其中，所述第三电极层包括多个间隔排布的条状电极，每个条状电极上设置有多个所述通孔。
  14. 如权利要求13所述的液晶显示器，其中，所述遮光突起物沿所述条状电极长度方向延伸。
  15. 如权利要求10所述的液晶显示器，其中，所述第一基板上还设置有 黑矩阵，所述黑矩阵对应于所述遮光区域，所述第一电极层覆盖所述黑矩阵。
  16. 如权利要求10所述的液晶显示器，其中，所述第一基板为彩膜基板，所述第一电极层为公共电极层；所述第二基板为阵列基板，所述第二电极层为像素电极层。
  17. 如权利要求10所述的液晶显示器，其中，所述第一基板为阵列基板，所述第一电极层为像素电极层；所述第二基板为彩膜基板，所述第二电极层为公共电极层。
  18. 如权利要求10所述的液晶显示器，其中，所述第一电极层和所述第二电极层均采用透明导电材料制成。
PCT/CN2017/085937 2017-05-09 2017-05-25 液晶显示面板及液晶显示器 WO2018205314A1 (zh)

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