WO2018205313A1 - 液晶面板及液晶显示装置 - Google Patents

液晶面板及液晶显示装置 Download PDF

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Publication number
WO2018205313A1
WO2018205313A1 PCT/CN2017/085847 CN2017085847W WO2018205313A1 WO 2018205313 A1 WO2018205313 A1 WO 2018205313A1 CN 2017085847 W CN2017085847 W CN 2017085847W WO 2018205313 A1 WO2018205313 A1 WO 2018205313A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal panel
substrate
reflective
reflective walls
Prior art date
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PCT/CN2017/085847
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English (en)
French (fr)
Inventor
樊勇
Original Assignee
深圳市华星光电技术有限公司
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Priority to US15/536,900 priority Critical patent/US20190094577A1/en
Publication of WO2018205313A1 publication Critical patent/WO2018205313A1/zh

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Classifications

    • 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
    • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
    • 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
    • G02F1/133377—Cells with plural compartments or having plurality of liquid crystal microcells partitioned by walls, e.g. one microcell per pixel
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13396—Spacers having different sizes
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13398—Spacer materials; Spacer properties
    • 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
    • G02F2201/08—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 light absorbing layer
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/02—Function characteristic reflective

Definitions

  • the present invention relates to the field of display, and in particular to a liquid crystal panel and a liquid crystal display device.
  • PDLC Polymer Dispersed Liquid Crystal, Polymer-dispersed liquid crystal, also known as liquid crystal dimming film, is a method in which a low molecular liquid crystal is mixed with a prepolymer and polymerized under certain conditions to form micron-sized liquid crystal particles uniformly dispersed in a polymer network, and then reused.
  • the dielectric anisotropy of the liquid crystal molecules obtains a material having electrooptic response characteristics.
  • the PDLC mainly works between the scattering state and the transparent state. Specifically, when the driving voltage is not applied, the PDLC cannot form a regular electric field, the optical axis orientation of the liquid crystal particles is disordered, the incident light is scattered, and the PDLC is opaque or Translucent.
  • the optical axes of the liquid crystal particles are arranged in the direction of the electric field, the incident light is not scattered, and the PDLC is transparent.
  • the PDLC has optical switching characteristics driven by an applied electric field, and its transparency increases with the increase of the driving voltage, compared with VA (Vertical). Alignment, vertical alignment) or IPS (In-Plane Switching, The horizontal electric field effect shows that the liquid crystal panel of the technology has a good electro-optic characteristic of the liquid crystal panel with PDLC, and can save cost and power consumption without a polarizer.
  • the present invention provides a liquid crystal panel and a liquid crystal display device, which can improve the contrast of a display image without increasing driving cost and power consumption.
  • a liquid crystal panel includes a color film substrate and an array substrate disposed at a relatively spaced interval, and a PDLC, a plurality of PS and a plurality of reflective walls between the color filter substrate and the array substrate, wherein the plurality of reflective walls are parallel to The direction of the liquid crystal panel is sequentially arranged in the PDLC.
  • Each reflective wall is provided with a plurality of dots, and each of the reflective walls is disposed perpendicular to the color filter substrate and the array substrate, and the reflective wall is used for reflecting the light irradiated thereon.
  • the amount of light after reflection is made smaller than the amount of light before reflection, and the plurality of PSs are sequentially arranged at equal intervals in a direction parallel to the liquid crystal panel, and the number of reflective walls between any two adjacent PSs is the same.
  • a liquid crystal panel includes a first substrate and a second substrate disposed at a relatively spaced interval, and a PDLC and a plurality of reflective walls between the first substrate and the second substrate, the plurality of reflective walls being parallel to the liquid crystal panel
  • the directions are sequentially arranged in the PDLC, and the reflective wall is used to reflect the light irradiated thereto, and the amount of reflected light is smaller than the amount of light before the reflection.
  • a liquid crystal display device includes a backlight module and a liquid crystal panel disposed in a light emitting direction of the backlight module, the liquid crystal panel including a first substrate and a second substrate disposed at a relatively spaced interval, and the first substrate and the first substrate a PDLC between the two substrates and a plurality of reflective walls, the plurality of reflective walls are sequentially disposed in the PDLC in a direction parallel to the liquid crystal panel, the reflective wall is configured to reflect the light irradiated thereon, and the amount of the reflected light Less than the amount of light before reflection.
  • the present invention provides a reflective wall in a PDLC. After the light scattered by the PDLC is irradiated onto the reflective wall, the reflective wall causes the amount of reflected light to be smaller than the amount of light before the reflection, so that the amount of light transmitted through the PDLC is greatly reduced, thereby increasing the display.
  • the difference in brightness of the image in the scattering state and the transparent state improves the contrast of the displayed image. Since the present invention does not increase the thickness of the liquid crystal layer, the driving voltage is not greatly increased, and the driving cost and power consumption are not required to be increased.
  • FIG. 1 is a cross-sectional view showing the structure of a liquid crystal panel according to an embodiment of the present invention
  • FIG. 2 is a cross-sectional view showing the structure of a liquid crystal panel according to another embodiment of the present invention.
  • FIG 3 is a cross-sectional view showing the structure of a liquid crystal display device according to an embodiment of the present invention.
  • FIG. 1 is a liquid crystal panel according to an embodiment of the invention.
  • the liquid crystal panel 10 includes array substrates (Thin Film) disposed at relatively spaced intervals Transistor Substrate, TFT substrate or Array substrate 11 and color filter substrate (Color Filter Substrate, CF substrate or color filter substrate 12, and PDLC 13 and a plurality of reflective walls 14 between the two substrates.
  • the PDLC 13 is located in the liquid crystal cell formed by the array substrate 11 and the color filter substrate 12.
  • a plurality of reflective walls 14 are sequentially spaced apart from each other in the direction parallel to the liquid crystal panel 10, that is, in the horizontal direction in the drawing. 13 in.
  • the plurality of reflective walls 14 can directly abut the array substrate 11 and the color filter substrate 12, and the reflective walls 14 can be disposed perpendicular to the array substrate 11 and the color filter substrate 12.
  • one end of the reflective wall 14 can abut the common electrode located at the outermost side of the color filter substrate 12, and the other end of the reflective wall 14 can abut the protective layer located at the outermost side of the array substrate 11.
  • the common electrode is the liquid crystal panel 10 that is not disposed on the color filter substrate 12 side
  • one end of the reflective wall 14 can abut against the color filter located at the outermost side of the color filter substrate 12, and at this time, the reflective wall 14 The other end may still abut the protective layer located at the outermost side of the array substrate 11.
  • PDLC When a driving voltage is applied to the liquid crystal panel 10, PDLC
  • the optical axes of the liquid crystal particles in 13 are arranged in the direction of the electric field, and the incident light perpendicular to the liquid crystal panel 10 is not scattered by the liquid crystal particles, and the PDLC 13 is transparent.
  • the driving voltage is not applied to the liquid crystal panel 10
  • the PDLC 13 can not form a regular electric field, the optical axis orientation of the liquid crystal particles is disordered, and the incident light is scattered by the liquid crystal particles.
  • PDLC 13 is opaque or translucent (ie, working in a scattering state), and after being scattered to the reflective wall 14 by the scattered light, the reflective wall 14 makes the amount of reflected light smaller than the amount of light before the reflection, so that the PDLC is transmitted through the PDLC.
  • the amount of light of 13 is greatly reduced, thereby increasing the brightness difference of the displayed image in the scattering state and the transparent state, and improving the contrast of the displayed image.
  • this embodiment only needs to be in the PDLC.
  • the addition of the reflective wall 14 in 13 increases the contrast of the displayed image by adding a mesh wall structure having a low reflectance (for example, the reflectance of the reflective wall 14 is less than 40%), compared to the prior art.
  • the embodiment does not need to increase the thickness of the liquid crystal cell, so that the driving voltage is not greatly increased, and the driving cost and power consumption are not required to be increased.
  • the scattered light that is irradiated on the reflective wall 14 may be uneven, and a spot may be formed on the reflective wall 14, thereby affecting the display quality.
  • the reflective wall 14 of the present embodiment may be distributed with a plurality of dots to further reduce the reflectivity of the reflective wall 14 (including the spot region). At this time, this embodiment is equivalent to the PDLC.
  • a gatekeeper with low reflectivity has been added to 13.
  • the outer surface of the reflective wall 14 may also be provided with a light absorbing layer for absorbing the scattered light that is irradiated to the reflective wall 14 so that the amount of light after the reflection is smaller than the amount of light before the reflection, thereby further reducing the reflectance of the reflective wall 14 and improving the display.
  • the contrast of the image may also be provided with a light absorbing layer for absorbing the scattered light that is irradiated to the reflective wall 14 so that the amount of light after the reflection is smaller than the amount of light before the reflection, thereby further reducing the reflectance of the reflective wall 14 and improving the display. The contrast of the image.
  • the reflective wall 14 can be made of an insulating material.
  • FIG. 2 is a liquid crystal panel according to another embodiment of the present invention.
  • the liquid crystal panel 20 includes an array substrate 21 and a color filter substrate 22 which are disposed at a relatively spaced interval, and a PDLC between the two substrates. 23.
  • the PDLC 23 is located in the liquid crystal cell formed by the array substrate 11 and the color filter substrate 12.
  • a plurality of spacers 25 are sequentially disposed at equal intervals in a direction parallel to the liquid crystal panel 20 for controlling the liquid crystal cell to have a uniform thickness.
  • a plurality of reflective walls 24 are sequentially spaced apart from the PDLC in a direction parallel to the liquid crystal panel 20. 23 in.
  • the number of reflective walls 24 between any two adjacent spacers 25 may be the same.
  • the distance between adjacent two reflective walls 24 may be equal. That is, the plurality of reflective walls 24 of the present embodiment can be evenly distributed on the PDLC. 23 in.
  • PDLC When a driving voltage is applied to the liquid crystal panel 20, PDLC The optical axes of the liquid crystal particles in 23 are arranged in the direction of the electric field, and the incident light perpendicular to the liquid crystal panel 20 is not scattered by the liquid crystal particles, and the PDLC 23 is transparent. And when the driving voltage is not applied to the liquid crystal panel 20, the PDLC 23 can not form a regular electric field, the optical axis orientation of the liquid crystal particles is disordered, and the incident light is scattered by the liquid crystal particles.
  • the reflective wall 24 makes the amount of reflected light smaller than the amount of light before the reflection, so that the PDLC is transmitted through the PDLC.
  • the amount of light of 23 is greatly reduced, thereby increasing the brightness difference of the displayed image in the scattering state and the transparent state, and improving the contrast of the displayed image.
  • this embodiment only needs to be in the PDLC.
  • the addition of the reflective wall 24 in 23, that is, the addition of a sheet-like structure having a low reflectance, can improve the contrast of the displayed image.
  • this embodiment does not need to increase the thickness of the liquid crystal cell, and therefore does not The drive voltage is greatly increased without increasing drive cost and power consumption.
  • the present invention also provides a liquid crystal display device.
  • the liquid crystal display device 30 includes a backlight module 31 and a liquid crystal panel 32 disposed in a light emitting direction of the backlight module 31 .
  • the backlight module 31 includes a collimated backlight for emitting incident light perpendicular to the liquid crystal panel 32.
  • the liquid crystal panel 32 may be the liquid crystal panel 10 shown in FIG. 1 or the liquid crystal panel 20 shown in FIG. 2. Therefore, the liquid crystal display device 30 has the advantageous effects that the liquid crystal panels 10 and 20 can produce.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Dispersion Chemistry (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种液晶面板（10）及液晶显示装置（30），液晶面板（10）包括相对间隔设置的第一基板（11）和第二基板（12），以及位于第一基板（11）和第二基板（12）之间的PDLC（13）和多个反射墙（14），多个反射墙（14）沿平行于液晶面板（10）的方向依次间隔设置于PDLC（13）中，反射墙（14）用于对照射至其上的光进行反射，并使得反射后的光量小于反射前的光量。

Description

液晶面板及液晶显示装置
【技术领域】
本发明涉及显示领域，具体涉及一种液晶面板及液晶显示装置。
【背景技术】
PDLC（Polymer Dispersed Liquid Crystal, 聚合物分散液晶）又叫液晶调光膜，是将低分子液晶与预聚物相混合，并在一定条件下经聚合反应，形成微米级的液晶微粒均匀地分散在高分子网络中，再利用液晶分子的介电各向异性获得具有电光响应特性的材料。PDLC主要工作在散射态和透明态之间，具体地：在未施加驱动电压时，PDLC无法形成有规律的电场，液晶微粒的光轴取向呈现无序状态，入射光被散射，PDLC呈不透明或半透明状。在施加驱动电压时，液晶微粒的光轴沿电场方向排列，入射光不会被散射，PDLC呈透明状。可见，PDLC在外加电场的驱动下具备光开关特性，而且其透明程度会随着驱动电压的增大而增大，相比较于采用VA（Vertical Alignment, 垂直配向）或IPS（In-Plane Switching, 横向电场效应显示）技术的液晶面板，具有PDLC的液晶面板具有良好的电光特性，可以无需偏光片，节省成本和功耗。
但是，当前基于PDLC的液晶面板存在对比度低等缺点。为了提高显示图像的对比度，现有技术一般采用增加液晶层厚度的方式，这无疑会导致驱动电压大幅增加，从而增加驱动成本和功耗。
【发明内容】
有鉴于此，本发明提供一种液晶面板及液晶显示装置，能够提高显示图像的对比度，且无需增加驱动成本和功耗。
本发明一实施例的液晶面板，包括相对间隔设置的彩膜基板和阵列基板，以及位于彩膜基板和阵列基板之间的PDLC、多个PS和多个反射墙，多个反射墙沿平行于液晶面板的方向依次间隔设置于PDLC中，每一反射墙设置有多个网点，且每一反射墙均与彩膜基板和阵列基板垂直设置，反射墙用于对照射至其上的光进行反射，并使得反射后的光量小于反射前的光量，多个PS沿平行于液晶面板的方向依次等间隔设置，且任意相邻两个PS之间的反射墙的数量相同。
本发明一实施例的液晶面板，包括相对间隔设置的第一基板和第二基板，及位于第一基板和第二基板之间的PDLC和多个反射墙，多个反射墙沿平行于液晶面板的方向依次间隔设置于PDLC中，反射墙用于对照射至其上的光进行反射，并使得反射后的光量小于反射前的光量。
本发明一实施例的液晶显示装置包括背光模组以及设置于背光模组的出光方向上的液晶面板，该液晶面板包括相对间隔设置的第一基板和第二基板，及位于第一基板和第二基板之间的PDLC和多个反射墙，多个反射墙沿平行于液晶面板的方向依次间隔设置于PDLC中，反射墙用于对照射至其上的光进行反射，并使得反射后的光量小于反射前的光量。
有益效果：本发明在PDLC中设置反射墙，被PDLC散射的光在照射到反射墙后，反射墙使得反射后的光量小于反射前的光量，使得透过PDLC的光量大大减少，从而增大显示图像在散射态和透明态时的亮度差距，提高显示图像的对比度，由于本发明并未增加液晶层的厚度，因此不会大幅增加驱动电压，无需增加驱动成本和功耗。
【附图说明】
图1是本发明一实施例的液晶面板的结构剖面示意图；
图2是本发明另一实施例的液晶面板的结构剖面示意图；
图3是本发明一实施例的液晶显示装置的结构剖面示意图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明所提供的各个示例性的实施例的技术方案进行清楚、完整地描述。在不冲突的情况下，下述各个实施例以及实施例中的特征可以相互组合。
请参阅图1，为本发明一实施例的液晶面板。所述液晶面板10包括相对间隔设置的阵列基板（Thin Film Transistor Substrate，TFT基板或Array基板）11和彩膜基板（Color Filter Substrate，CF基板或彩色滤光片基板）12，以及位于两基板之间的PDLC 13和多个反射墙14。
PDLC 13位于阵列基板11和彩膜基板12形成的液晶盒内。
沿平行于液晶面板10的方向，即沿图中水平方向，多个反射墙14依次间隔设置于PDLC 13中。在实际应用场景中，多个反射墙14可以直接与阵列基板11和彩膜基板12相抵接，并且反射墙14可以均与阵列基板11和彩膜基板12垂直设置。例如，反射墙14的一端可以抵接于位于彩膜基板12最外侧的公共电极，反射墙14的另一端可以抵接于位于阵列基板11最外侧的保护层。又例如，对于公共电极为未设置于彩膜基板12一侧的液晶面板10，反射墙14的一端可以抵接于位于彩膜基板12最外侧的彩色滤光片，此时，反射墙14的另一端可以仍然抵接于位于阵列基板11最外侧的保护层。
在对液晶面板10施加驱动电压时，PDLC 13中的液晶微粒的光轴沿电场方向排列，垂直于液晶面板10的入射光不会被液晶微粒散射，PDLC 13呈透明状。而在未对液晶面板10施加驱动电压时，PDLC 13无法形成有规律的电场，液晶微粒的光轴取向呈现无序状态，入射光被液晶微粒散射，此时PDLC 13呈不透明或半透明状（即工作在散射态），被散射的光在照射到反射墙14后，反射墙14使得反射后的光量小于反射前的光量，使得透过PDLC 13的光量大大减少，从而增大显示图像在散射态和透明态时的亮度差距，提高显示图像的对比度。
可见，本实施例只需在PDLC 13中增加反射墙14，即增加一种具有低反射率（例如该反射墙14的反射率低于40%）的网墙结构，就能提高显示图像的对比度，相比较于现有技术，本实施例并未也无需增加液晶盒的厚度，因此不会大幅增加驱动电压，无需增加驱动成本和功耗。
在PDLC 13工作在散射态时，照射在反射墙14上的散射光有可能不均匀，会在反射墙14上形成光斑，从而影响显示品质。为了避免因出现该光斑而影响显示品质，本实施例的反射墙14可以分布有多个网点，进一步降低反射墙14（包括在光斑区域）的反射率。此时，本实施例相当于在PDLC 13中增加了一种具有低反射率的网闸。
当然，反射墙14的外表面也可以设置有吸光层，用于吸收照射至反射墙14的散射光，使得反射后的光量小于反射前的光量，从而进一步降低反射墙14的反射率，提高显示图像的对比度。
另外，为了避免因反射墙14带电对PDLC 13中液晶微粒的偏转造成影响，所述反射墙14可以由绝缘材料制得。
请参阅图2，为本发明另一实施例的液晶面板。所述液晶面板20包括相对间隔设置的阵列基板21和彩膜基板22，以及位于两基板之间的PDLC 23、多个反射墙24和多个间隔物（Photo Spacer, PS）25。
PDLC 23位于阵列基板11和彩膜基板12形成的液晶盒内。
多个间隔物25沿平行于液晶面板20的方向依次等间隔设置，用于控制所述液晶盒具有均匀的厚度。
沿平行于液晶面板20的方向，多个反射墙24依次间隔设置于PDLC 23中。可选地，任意相邻两个间隔物25之间的反射墙24的数量可以相同。另外，对于位于相邻两个间隔物25之间的反射墙24，相邻两个反射墙24的距离可以相等。也就是说，本实施例的多个反射墙24可以均匀分布于PDLC 23中。
在对液晶面板20施加驱动电压时，PDLC 23中的液晶微粒的光轴沿电场方向排列，垂直于液晶面板20的入射光不会被液晶微粒散射，PDLC 23呈透明状。而在未对液晶面板20施加驱动电压时，PDLC 23无法形成有规律的电场，液晶微粒的光轴取向呈现无序状态，入射光被液晶微粒散射，此时PDLC 23工作在散射态，被散射的光在照射到反射墙24后，反射墙24使得反射后的光量小于反射前的光量，使得透过PDLC 23的光量大大减少，从而增大显示图像在散射态和透明态时的亮度差距，提高显示图像的对比度。
可见，本实施例只需在PDLC 23中增加反射墙24，即增加一种具有低反射率的片状结构，就能提高显示图像的对比度，相比较于现有技术，本实施例并未也无需增加液晶盒的厚度，因此不会大幅增加驱动电压，无需增加驱动成本和功耗。
本发明还提供一种液晶显示装置。如图3所示，所述液晶显示装置30包括背光模组31以及设置于背光模组31的出光方向上的液晶面板32。背光模组31包括准直型背光源，用于发出垂直于液晶面板32的入射光。该液晶面板32可以为图1所示的液晶面板10，也可以为图2所示的液晶面板20，因此，所述液晶显示装置30具有上述液晶面板10、20所能产生的有益效果。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，例如各实施例之间技术特征的相互结合，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (20)

  1. 一种液晶面板，其中，所述液晶面板包括相对间隔设置的彩膜基板和阵列基板，以及位于所述彩膜基板和阵列基板之间的聚合物分散液晶PDLC、多个间隔物PS和多个反射墙，所述多个反射墙沿平行于所述液晶面板的方向依次间隔设置于所述PDLC中，每一所述反射墙设置有多个网点，且每一所述反射墙均与所述彩膜基板和阵列基板垂直设置，所述反射墙用于对照射至其上的光进行反射，并使得反射后的光量小于反射前的光量，所述多个PS沿平行于所述液晶面板的方向依次等间隔设置，且任意相邻两个所述PS之间的反射墙的数量相同。
  2. 根据权利要求1所述的液晶面板，其中，所述反射墙包括绝缘材料制得的片状结构。
  3. 根据权利要求1所述的液晶面板，其中，所述反射墙的外表面设置有吸光层。
  4. 根据权利要求1所述的液晶面板，其中，在相邻两个所述PS之间，相邻两个所述反射墙的距离相等。
  5. 一种液晶面板，其中，所述液晶面板包括相对间隔设置的第一基板和第二基板，以及位于所述第一基板和第二基板之间的聚合物分散液晶PDLC和多个反射墙，所述多个反射墙沿平行于所述液晶面板的方向依次间隔设置于所述PDLC中，所述反射墙用于对照射至其上的光进行反射，并使得反射后的光量小于反射前的光量。
  6. 根据权利要求5所述的液晶面板，其中，每一所述反射墙均与所述第一基板和第二基板垂直设置。
  7. 根据权利要求5所述的液晶面板，其中，每一所述反射墙均设置有多个网点。
  8. 根据权利要求5所述的液晶面板，其中，所述反射墙包括绝缘材料制得的片状结构。
  9. 根据权利要求5所述的液晶面板，其中，所述反射墙的外表面设置有吸光层。
  10. 根据权利要求5所述的液晶面板，其中，所述液晶面板还包括设置于所述第一基板和第二基板之间的多个间隔物PS，所述多个PS沿平行于所述液晶面板的方向依次等间隔设置，且任意相邻两个所述PS之间的反射墙的数量相同。
  11. 根据权利要求10所述的液晶面板，其中，在相邻两个所述PS之间，相邻两个所述反射墙的距离相等。
  12. 根据权利要求5所述的液晶面板，其中，所述第一基板和第二基板分别为彩膜基板和阵列基板。
  13. 一种液晶显示装置，其中，所述液晶显示装置包括背光模组以及设置于所述背光模组的出光方向上的液晶面板，所述液晶面板包括相对间隔设置的彩膜基板和阵列基板，以及位于所述彩膜基板和阵列基板之间的聚合物分散液晶PDLC和多个反射墙，所述多个反射墙沿平行于所述液晶面板的方向依次间隔设置于所述PDLC中，所述反射墙用于对照射至其上的光进行反射，并使得反射后的光量小于反射前的光量。
  14. 根据权利要求13所述的液晶显示装置，其中，所述背光模组包括准直型背光源。
  15. 根据权利要求13所述的液晶显示装置，其中，每一所述反射墙均与所述第一基板和第二基板垂直设置。
  16. 根据权利要求13所述的液晶显示装置，其中，每一所述反射墙均设置有多个网点。
  17. 根据权利要求13所述的液晶显示装置，其中，所述反射墙包括绝缘材料制得的片状结构。
  18. 根据权利要求13所述的液晶显示装置，其中，所述反射墙的外表面设置有吸光层。
  19. 根据权利要求13所述的液晶显示装置，其中，所述液晶面板还包括设置于所述第一基板和第二基板之间的多个间隔物PS，所述多个PS沿平行于所述液晶面板的方向依次等间隔设置，且任意相邻两个所述PS之间的反射墙的数量相同。
  20. 根据权利要求19所述的液晶显示装置，其中，在相邻两个所述PS之间，相邻两个所述反射墙的距离相等。
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