WO2017193441A1 - Lcd显示器 - Google Patents

Lcd显示器 Download PDF

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Publication number
WO2017193441A1
WO2017193441A1 PCT/CN2016/085776 CN2016085776W WO2017193441A1 WO 2017193441 A1 WO2017193441 A1 WO 2017193441A1 CN 2016085776 W CN2016085776 W CN 2016085776W WO 2017193441 A1 WO2017193441 A1 WO 2017193441A1
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WO
WIPO (PCT)
Prior art keywords
substrate
layer
liquid crystal
lcd display
polarizing layer
Prior art date
Application number
PCT/CN2016/085776
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English (en)
French (fr)
Inventor
陈黎暄
李泳锐
Original Assignee
深圳市华星光电技术有限公司
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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 US15/109,126 priority Critical patent/US20180101067A1/en
Publication of WO2017193441A1 publication Critical patent/WO2017193441A1/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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • 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
    • 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
    • G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • 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
    • G02F1/133302—Rigid substrates, e.g. inorganic 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133567—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the back side
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136222—Colour filters incorporated in the active matrix substrate

Definitions

  • the present invention relates to the field of liquid crystal display technologies, and in particular, to an LCD display.
  • Liquid crystal display has many advantages such as thin body, power saving, and no radiation, and has been widely used.
  • Most of the liquid crystal display devices on the market are backlight type liquid crystal display devices, which include a liquid crystal display panel and a backlight module.
  • a liquid crystal display panel comprises a CF (Color Filter) substrate, a Thin Film Transistor (TFT) array substrate, a liquid crystal (LC) sandwiched between a color filter substrate and a thin film transistor array substrate, and a sealant.
  • the composition of the box (Sealant).
  • the working principle of the liquid crystal display panel is to place liquid crystal molecules in two parallel glass substrates, control the orientation of the liquid crystal molecules by energizing or not the glass substrate, change the polarization state of the light of the backlight module, and set on both sides of the liquid crystal display panel.
  • the polarizing plate realizes the penetration and blocking of the optical path to achieve the purpose of controlling the amount of light transmission; the light passing through the liquid crystal layer is filtered and absorbed by the color photoresist layer, so that the light of each pixel is emitted by the three primary colors (RGB).
  • RGB three primary colors
  • the composition different pixels corresponding to the light of different colors, using the principle of spatial color mixing, thereby achieving full color display. It can be seen that polarized light and RGB three primary colors are the two most important elements for their display principle to be realized.
  • polarizers mainly include iodine and dye systems.
  • the production principle is to soak a polymer film such as polyvinyl alcohol (PVA) in a solution containing polyvalent iodide ions or polarizing dyes, and then PVA polymer.
  • PVA polyvinyl alcohol
  • PVA molecules Stretching in a single axis direction; PVA molecules are aligned in one direction after being stretched by external force, causing the iodine molecules or dye molecules adsorbed on the PVA molecules to align in the same direction as the PVA molecules; the elongated iodine molecules or dyes after stretching
  • the molecule absorbs light that vibrates in parallel with the long-axis direction of the iodine molecule, and transmits light that vibrates perpendicular to the long-axis direction of the iodine molecule, thereby obtaining a polarizer capable of forming polarized light.
  • a metal grating structure polarizer has also been applied to liquid crystal displays.
  • a TFT (Polyimide, PI) alignment film is further disposed on the TFT substrate and the CF substrate. After the alignment film is in contact with the liquid crystal, the liquid crystal can be pretilted in a certain direction, thereby providing a bearing for the liquid crystal molecules. angle. If the current LCD products are not subjected to the PI process, the liquid crystal will lose its alignment, causing the system to react slowly and appear to be tumbling. However, the PI process requires high-temperature baking (180 to 230 ° C). Generally, a polarizer cannot withstand such a high temperature without quality problems. Therefore, an LCD panel having a PI alignment film is generally used, and the polarizers are externally disposed.
  • a PI-Free process technology in which a material having an alignment function is added to an existing liquid crystal in an additive form (content is about 0.1 to 5%).
  • Additive can be roughly divided into two categories, one is UV-curable monomer (Monomers), which is formed by polymerization on a substrate after ultraviolet light irradiation to form a protrusion to achieve a PI-like alignment, and the other type.
  • Ultra-thin displays have become a hot spot in the market today. How to make displays such as mobile phones and TVs thinner is one of the core tasks of engineers.
  • the present invention provides an LCD display including a lower substrate and an upper substrate disposed opposite to each other, a liquid crystal layer interposed between the lower substrate and the upper substrate, and an edge-lit backlight on a side of the lower substrate. source;
  • the liquid crystal layer is a self-aligned liquid crystal material comprising a material having an alignment function
  • the lower substrate includes a first substrate, a first functional layer on a side of the first substrate adjacent to the liquid crystal layer, and a first layer on a side of the first substrate adjacent to the liquid crystal layer Polarized layer
  • the upper substrate includes a second substrate, a second functional layer on a side of the second substrate adjacent to the liquid crystal layer, and a side of the second substrate adjacent to or away from the liquid crystal layer Second polarizing layer;
  • the first substrate substrate serves as a light guide plate, and a side surface of the first substrate substrate faces the side entrance type backlight as a light incident surface.
  • the lower substrate is a color film substrate
  • the upper substrate is a TFT array substrate.
  • the lower substrate is a TFT array substrate
  • the upper substrate is a color film substrate.
  • the second polarizing layer is located between the second substrate and the second functional layer.
  • the second polarizing layer is located between the second functional layer and the liquid crystal layer, and a buffer layer is disposed on a side of the second polarizing layer adjacent to the liquid crystal layer.
  • the first polarizing layer is located between the first substrate and the first functional layer.
  • the first polarizing layer is located between the first functional layer and the liquid crystal layer, and a buffer layer is disposed on a side of the first polarizing layer adjacent to the liquid crystal layer.
  • the first polarizing layer and the second polarizing layer are an iodine-based polarizing layer, a dye-based polarizing layer, or gold It is a grating polarizing layer.
  • the first base substrate and the second base substrate are glass substrates.
  • the present invention also provides an LCD display comprising a lower substrate and an upper substrate disposed opposite to each other, a liquid crystal layer disposed between the lower substrate and the upper substrate, and an edge-lit backlight on a side of the lower substrate;
  • the liquid crystal layer is a self-aligned liquid crystal material comprising a material having an alignment function
  • the lower substrate includes a first substrate, a first functional layer on a side of the first substrate adjacent to the liquid crystal layer, and a first layer on a side of the first substrate adjacent to the liquid crystal layer a polarizing layer;
  • the upper substrate includes a second substrate, a second functional layer on a side of the second substrate adjacent to the liquid crystal layer, and a side of the second substrate adjacent to or away from the liquid crystal layer Second polarizing layer;
  • the first substrate is used as a light guide plate, and a side surface of the first substrate is used as a light incident surface facing the side-entry backlight;
  • the first polarizing layer and the second polarizing layer are an iodine-based polarizing layer, a dye-based polarizing layer, or a metal grating polarizing layer;
  • the first base substrate and the second base substrate are glass substrates.
  • the present invention provides an LCD display including a lower substrate and an upper substrate disposed opposite to each other, a liquid crystal layer interposed between the lower substrate and the upper substrate, and an edge-lit backlight on a side of the lower substrate.
  • the liquid crystal layer is self-aligned liquid crystal material
  • no PI alignment film is disposed on the upper and lower substrates
  • the polarizing layer of the lower substrate is designed to be built-in
  • the substrate of the following substrate is used as a side-entry backlight
  • the light guide plate eliminates the need for an additional light guide plate and has an ultra-thin LCD module structure with an optimized display.
  • FIG. 1 is a schematic structural view of a first embodiment of an LCD display of the present invention
  • FIG. 2 is a schematic structural view of a second embodiment of an LCD display of the present invention.
  • FIG. 3 is a schematic structural view of a third embodiment of an LCD display of the present invention.
  • FIG. 4 is a schematic structural view of a fourth embodiment of an LCD display of the present invention.
  • the LCD includes a lower substrate 10 and an upper substrate 20 disposed opposite to each other, and a liquid crystal layer interposed between the lower substrate 10 and the upper substrate 20. 30, and a side-entry backlight 40 on the side of the lower substrate 10;
  • the liquid crystal layer 30 is a self-aligned liquid crystal material, and includes a material having an alignment function
  • the lower substrate 10 includes a first substrate substrate 11, a first functional layer 12 on a side of the first substrate substrate 11 adjacent to the liquid crystal layer 30, and a first substrate substrate 11 and the first substrate a first polarizing layer 13 between the functional layers 12;
  • the upper substrate 20 includes a second substrate 21, a second functional layer 22 on a side of the second substrate 21 adjacent to the liquid crystal layer 30, and a second substrate 21 away from the second substrate a second polarizing layer 23 on one side of the liquid crystal layer 30;
  • the first substrate substrate 11 serves as a light guide plate, and a side surface of the first substrate substrate 11 serves as a light incident surface facing the side-entry backlight 40.
  • the lower substrate 10 is a color filter substrate
  • the upper substrate 20 is a TFT array substrate.
  • the first functional layer 12 and the second functional layer 22 are respectively a functional layer (CF side) of the color filter substrate, such as a color film layer, or an Arry side of the TFT array substrate, such as a TFT array layer.
  • the present invention utilizes a process of PI-Free, wherein the liquid crystal layer 30 is a self-aligned liquid crystal material, that is, no PI alignment film is disposed on the upper and lower substrates 20 and 10. Therefore, the first polarizing layer 13 is The built-in design does not have the risk of being damaged by high temperature in the PI process, and the first substrate 11 of the lower substrate 10 is used as the light guide plate of the side-entry backlight 40, thereby eliminating the need for an additional light guide plate, so that the LCD display Ultra-thin module structure with optimized display.
  • the material having an alignment function in the liquid crystal layer 30 is a UV-curable monomer, and can be polymerized on the upper and lower substrates 20 and 10 to form a protrusion under ultraviolet light irradiation to achieve a PI-like alignment, or It is a small molecule containing a strong polar group and a liquid crystal component group, and is vertically aligned on the inorganic surfaces of the upper and lower substrates 20 and 10 by physical adsorption or chemical reaction to function as a vertical alignment.
  • the first polarizing layer 13 and the second polarizing layer 23 are an iodine-based polarizing layer, a dye-based polarizing layer, or a metal grating polarizing layer. Since the liquid crystal layer 30 is designed as a self-aligned liquid crystal material, the PI alignment film is not disposed on the upper and lower substrates 20 and 10. Therefore, the first polarizing layer 13 and the second polarizing layer 23 are iodine-based organic materials. The polarizing layer or the dye-based polarizing layer is also not at risk of being damaged by high temperature baking (180 to 230 ° C) in the PI process. Specifically, the first base substrate 11 and the second base substrate 21 are glass substrates.
  • the lower substrate 10 is a TFT array substrate
  • the upper substrate is The substrate 20 is a color filter substrate
  • the first functional layer 12 is correspondingly a functional layer on the TFT array substrate
  • the second functional layer 22 is correspondingly a functional layer on the color filter substrate; the other is the same as the first embodiment. I will not repeat them here.
  • FIG. 3 is a schematic structural view of a third embodiment of an LCD display according to the present invention.
  • the second polarizing layer 23 is located at the second functional layer 22 and the Between the liquid crystal layers 30, in order to prevent the second polarizing layer 23 from being directly damaged by contact with the liquid crystal layer 30, a buffer layer (not shown) is further provided on the side of the second polarizing layer 23 close to the liquid crystal layer 30.
  • Others are the same as the first embodiment, and are not described herein again.
  • the lower substrate 10 is a TFT array substrate, and the upper substrate 20 is colored.
  • the first functional layer 12 is correspondingly a functional layer on the TFT array substrate
  • the second functional layer 22 is correspondingly a functional layer on the color film substrate
  • the second polarizing layer 23 is located at the second lining
  • the bottom substrate 21 and the second functional layer 22 are the same as the first embodiment, and are not described herein again.
  • the position of the first polarizing layer 13 on the lower substrate 10 and the position of the second polarizing layer 23 on the upper substrate 20 can be arbitrarily matched.
  • the first polarizing layer may be located between the first base substrate 11 and the first functional layer 12 or between the first functional layer 12 and the liquid crystal layer 30, of course, when A functional layer 12 includes a plurality of functional layer structures, and the first polarizing layer 13 may also be located in the first functional layer 12; and when the first polarizing layer 13 is located in the first functional layer 12 and When the liquid crystal layer 30 is interposed, in order to prevent the first polarizing layer 13 from being directly damaged by contact with the liquid crystal layer 30, a buffer layer is further provided on the side of the first polarizing layer 13 close to the liquid crystal layer 30.
  • the second polarizing layer 23 may be located on a side of the second base substrate 21 away from the liquid crystal layer 30, between the second base substrate 21 and the second functional layer 22. Or between the second functional layer 22 and the liquid crystal layer 30.
  • the second polarizing layer 23 may also be located in the second function.
  • a buffer layer is designed on a side of the second polarizing layer 23 adjacent to the liquid crystal layer 30.
  • the LCD display of the present invention includes a lower substrate and an upper substrate disposed opposite to each other, a liquid crystal layer interposed between the lower substrate and the upper substrate, and an edge-lit backlight on a side of the lower substrate.
  • the liquid crystal layer is a self-aligned liquid crystal material, and no PI alignment film is disposed on the upper and lower substrates, and the polarizing layer of the lower substrate is designed to be built-in, and the substrate of the following substrate is used as a guide for the side-entry backlight.
  • Light board which eliminates the need for additional light guides and has an optimized display Ultra-thin LCD module structure.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Liquid Crystal (AREA)

Abstract

一种LCD显示器，包括相对设置的下基板(10)与上基板(20)、夹设于下基板(10)与上基板(20)之间的液晶层(30)、及位于下基板(10)一侧的侧入式背光源(40)，液晶层(30)为自取向液晶材料，包含具有配向功能的材料；利用PI-Free的制程工艺，上基板（20）和下基板（10）上不设置PI配向膜，下基板（10）的第一偏光层（13）设计为内置式，并以下基板（10）的第一衬底基板(11)作为侧入式背光源（40）的导光板，从而不需额外设置导光板，具有最佳化显示的超薄LCD模组结构。

Description

LCD显示器 技术领域
本发明涉及液晶显示技术领域，尤其涉及一种LCD显示器。
背景技术
液晶显示装置(Liquid Crystal Display，LCD)具有机身薄、省电、无辐射等众多优点，得到了广泛的应用。现有市场上的液晶显示装置大部分为背光型液晶显示装置，其包括液晶显示面板及背光模组(backlight module)。通常液晶显示面板由彩膜(CF，Color Filter)基板、薄膜晶体管(TFT，Thin Film Transistor)阵列基板、夹于彩膜基板与薄膜晶体管阵列基板之间的液晶(Liquid Crystal，LC)及密封胶框(Sealant)组成。
液晶显示面板的工作原理是在两片平行的玻璃基板当中放置液晶分子，通过玻璃基板通电与否来控制液晶分子取向，改变背光模组的光线的偏振状态，并藉由液晶显示面板两侧设置的偏光板实现光路的穿透与阻挡，达到控制透光量的目的；通过彩色光阻层将透过液晶层的光线进行过滤吸收，使得每个像素的光在射出后都是由三原色(RGB)构成，不同的像素对应发出不同颜色的光，利用空间混色原理，从而实现全彩显示。可见，偏振光和RGB三原色是其显示原理得以实现最重要的两个要素。
现在常用的偏光片主要有碘系和染料系，其制作原理为将聚乙烯醇(polyvinyl alcohol，PVA)等高分子膜浸泡于含多价碘离子或偏光染料的溶液中，再将PVA高分子以单一轴方向拉伸；PVA分子受外力拉伸后会在一个方向上排列，促使吸附在PVA分子上的碘分子或染料分子和PVA分子同方向排列；拉伸后的细长碘分子或染料分子会吸收平行于碘分子长轴方向振动的光，透过垂直于碘分子长轴方向振动的光，即得到能够形成偏振光的偏光片。另外，金属光栅结构的偏光片也已在液晶显示得以应用。
通常TFT基板及CF基板上还分别设有一层聚酰亚胺(Polyimide，PI)配向膜，该配向膜与液晶接触后，能够使得液晶产生一定方向的预倾角，从而给液晶分子提供一个承载的角度。现行的LCD产品如果不进行PI制程，液晶将失去配向，导致系统的反应偏慢，并出现乱倒的现象。但是，PI制程需要高温烘烤(180～230℃)，一般的偏光片无法承受如此高的温度而不发生品质问题，因此通常具有PI配向膜的LCD面板，其偏光片都为外置式，设置于TFT基板和CF基板的外侧。为解决上述PI配向膜所存在的问 题，目前本领域内，已提出一种PI-Free的制程工艺，将具有配向功能的材料以添加剂(Additive)的形式加入到现行液晶中(含量约在0.1～5％之间)，形成自取向液晶材料，其中Additive大致可分为两类，一类是紫外光固化的单体(Monomers)，在紫外光照射下在基板上聚合后形成凸起从而达到类似PI配向的目的，另一类是同时含有强极性基团和液晶成分基团的小分子，采用物理吸附或化学反应的方式垂直排列在基板的无机表面而起到垂直配向作用，以取代原来的PI配向层，达到垂直配相的目的。
超薄显示器在今天已经成为市场的热点，如何使得显示器例如手机，电视的厚度更薄，是工程师的核心工作之一。
发明内容
本发明的目的在于提供一种LCD显示器，具有最佳化显示的超薄LCD模组结构。
为实现上述目的，本发明提供一种LCD显示器，包括相对设置的下基板与上基板、夹设于下基板与上基板之间的液晶层、及位于所述下基板一侧的侧入式背光源；
所述液晶层为自取向液晶材料，包含具有配向功能的材料；
所述下基板包括第一衬底基板、位于所述第一衬底基板靠近所述液晶层一侧的第一功能层、及位于所述第一衬底基板靠近所述液晶层侧的第一偏光层；
所述上基板包括第二衬底基板、位于所述第二衬底基板靠近所述液晶层一侧的第二功能层、及位于所述第二衬底基板靠近或远离所述液晶层一侧的第二偏光层；
所述第一衬底基板作为导光板，所述第一衬底基板的一侧面作为入光面正对所述侧入式背光源。
所述下基板为彩膜基板，所述上基板为TFT阵列基板。
所述下基板为TFT阵列基板，所述上基板为彩膜基板。
所述第二偏光层位于所述第二衬底基板与所述第二功能层之间。
所述第二偏光层位于所述第二功能层与所述液晶层之间，所述第二偏光层靠近所述液晶层的一侧上设有缓冲层。
所述第一偏光层位于第一衬底基板与所述第一功能层之间。
所述第一偏光层位于所述第一功能层与所述液晶层之间，所述第一偏光层靠近所述液晶层的一侧上设有缓冲层。
所述第一偏光层与第二偏光层为碘系偏光层、染料系偏光层、或者金 属光栅偏光层。
所述第一衬底基板与第二衬底基板为玻璃基板。
本发明还提供一种LCD显示器，包括相对设置的下基板与上基板、设于下基板与上基板之间的液晶层、及位于所述下基板一侧的侧入式背光源；
所述液晶层为自取向液晶材料，包含具有配向功能的材料；
所述下基板包括第一衬底基板、位于所述第一衬底基板靠近所述液晶层一侧的第一功能层、及位于所述第一衬底基板靠近所述液晶层一侧的第一偏光层；
所述上基板包括第二衬底基板、位于所述第二衬底基板靠近所述液晶层一侧的第二功能层、及位于所述第二衬底基板靠近或远离所述液晶层一侧的第二偏光层；
所述第一衬底基板作为导光板，所述第一衬底基板的一侧面作为入光面正对所述侧入式背光源；
其中，所述第一偏光层与第二偏光层为碘系偏光层、染料系偏光层、或者金属光栅偏光层；
其中，所述第一衬底基板与第二衬底基板为玻璃基板。
本发明的有益效果：本发明提供的LCD显示器，包括相对设置的下基板与上基板、夹设于下基板与上基板之间的液晶层、及位于所述下基板一侧的侧入式背光源，利用PI-Free的制程工艺，液晶层为自取向液晶材料，上下基板上不设置PI配向膜，下基板的偏光层设计为内置式，并以下基板的衬底基板作为侧入式背光源的导光板，从而不需额外设置导光板，具有最佳化显示的超薄LCD模组结构。
附图说明
下面结合附图，通过对本发明的具体实施方式详细描述，将使本发明的技术方案及其他有益效果显而易见。
附图中，
图1为本发明LCD显示器的第一实施例的结构示意图；
图2为本发明LCD显示器的第二实施例的结构示意图；
图3为本发明LCD显示器的第三实施例的结构示意图；
图4为本发明LCD显示器的第四实施例的结构示意图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明 的优选实施例及其附图进行详细描述。
请参阅图1，为本发明的LCD显示器的第一实施例的结构示意图，所述LCD包括相对设置的下基板10与上基板20、夹设于下基板10与上基板20之间的液晶层30、及位于所述下基板10一侧的侧入式背光源40；
所述液晶层30为自取向液晶材料，包含具有配向功能的材料；
所述下基板10包括第一衬底基板11、位于所述第一衬底基板11靠近所述液晶层30一侧的第一功能层12、及位于第一衬底基板11与所述第一功能层12之间第一偏光层13；
所述上基板20包括第二衬底基板21、位于所述第二衬底基板21靠近所述液晶层30一侧的第二功能层22、及位于所述第二衬底基板21远离所述液晶层30一侧的第二偏光层23；
所述第一衬底基板11作为导光板，所述第一衬底基板11的一侧面作为入光面正对所述侧入式背光源40。具体地，所述下基板10为彩膜基板，所述上基板20为TFT阵列基板。则第一功能层12和第二功能层22相应的为彩膜基板的功能层(CF side)，如彩膜层，或TFT阵列基板的功能层(Arry side)，如TFT阵列层。
需要说明的是，本发明利用了PI-Free的制程工艺，所述液晶层30为自取向液晶材料，即上、下基板20、10上不设置PI配向膜，因此，第一偏光层13为内置式设计而不存在在PI制程中被高温损坏的风险，进而将下基板10的第一衬底基板11作为侧入式背光源40的导光板，从而不需额外设置导光板，使得LCD显示器具有最佳化显示的超薄模组结构。
具体地，所述液晶层30中具有配向功能的材料为紫外光固化的单体，在紫外光照射下能够在上、下基板20、10上聚合形成凸起从而达到类似PI配向的目的，或者是同时含有强极性基团和液晶成分基团的小分子，采用物理吸附或化学反应的方式垂直排列在上、下基板20、10的无机表面而起到垂直配向作用。
具体地，所述第一偏光层13与第二偏光层23为碘系偏光层、染料系偏光层、或者金属光栅偏光层。由于本发明将液晶层30设计为自取向液晶材料，上、下基板20、10上不设置PI配向膜，因此，所述第一偏光层13与第二偏光层23即使为有机材料的碘系偏光层或染料系偏光层也不存在在PI制程中被高温烘烤(180～230℃)而损坏的风险。具体地，所述第一衬底基板11与第二衬底基板21为玻璃基板。
请参阅图2，为本发明LCD显示器第二实施例的结构示意图，与上述第一实施例相比，在本实施例中，所述下基板10为TFT阵列基板，所述上 基板20为彩膜基板，所述第一功能层12相应为TFT阵列基板上的功能层，所述第二功能层22相应为彩膜基板上的功能层；其他与第一实施例均相同，在此不再赘述。
请参阅图3，为本发明LCD显示器第三实施例的结构示意图，与上述第一实施例相比，在本实施例中，所述第二偏光层23位于所述第二功能层22与所述液晶层30之间，为了防止第二偏光层23直接与液晶层30接触而被破坏，在第二偏光层23靠近所述液晶层30的一侧上还设有缓冲层(未图示)，其他与第一实施例均相同，在此不再赘述。
请参阅图4，为本发明LCD显示器第四实施例的结构示意图，与上述第一实施例相比，在本实施例中，所述下基板10为TFT阵列基板，所述上基板20为彩膜基板，所述第一功能层12相应为TFT阵列基板上的功能层，所述第二功能层22相应为彩膜基板上的功能层；所述第二偏光层23位于所述第二衬底基板21与所述第二功能层22之间；其他与第一实施例均相同，在此不再赘述。
需要说明的是，在本发明中，所述第一偏光层13在下基板10上的位置与在第二偏光层23在上基板20上的位置可任意搭配。其中，所述第一偏光层可以位于第一衬底基板11与所述第一功能层12之间、或者位于所述第一功能层12与所述液晶层30之间，当然当所述第一功能层12包括多个功能层结构，所述第一偏光层13也可以位于所述第一功能层12之中；而当所述第一偏光层13位于所述第一功能层12与所述液晶层30之间时，为了防止第一偏光层13直接与液晶层30接触而被破坏，在第一偏光层13靠近所述液晶层30的一侧上还需设有缓冲层。而对于所述第二偏光层23，其可以位于所述第二衬底基板21远离所述液晶层30的一侧、位于所述第二衬底基板21与所述第二功能层22之间、或者位于所述第二功能层22与所述液晶层30之间，当然若所述第二功能层22包括多个功能层结构，所述第二偏光层23也可以位于所述第二功能层22之中；当所述第二偏光层23位于所述第二功能层22与所述液晶层30之间时，为了防止第二偏光层23直接与液晶层30接触而被破坏，在第二偏光层23靠近所述液晶层30的一侧上设计缓冲层。
综上所述，本发明的LCD显示器，包括相对设置的下基板与上基板、夹设于下基板与上基板之间的液晶层、及位于所述下基板一侧的侧入式背光源，利用PI-Free的制程工艺，液晶层为自取向液晶材料，上下基板上不设置PI配向膜，下基板的偏光层设计为内置式，并以下基板的衬底基板作为侧入式背光源的导光板，从而不需额外设置导光板，具有最佳化显示的 超薄LCD模组结构。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明后附的权利要求的保护范围。

Claims (16)

  1. 一种LCD显示器，包括相对设置的下基板与上基板、设于下基板与上基板之间的液晶层、及位于所述下基板一侧的侧入式背光源；
    所述液晶层为自取向液晶材料，包含具有配向功能的材料；
    所述下基板包括第一衬底基板、位于所述第一衬底基板靠近所述液晶层一侧的第一功能层、及位于所述第一衬底基板靠近所述液晶层一侧的第一偏光层；
    所述上基板包括第二衬底基板、位于所述第二衬底基板靠近所述液晶层一侧的第二功能层、及位于所述第二衬底基板靠近或远离所述液晶层一侧的第二偏光层；
    所述第一衬底基板作为导光板，所述第一衬底基板的一侧面作为入光面正对所述侧入式背光源。
  2. 如权利要求1所述的LCD显示器，其中，所述下基板为彩膜基板，所述上基板为TFT阵列基板。
  3. 如权利要求1所述的LCD显示器，其中，所述下基板为TFT阵列基板，所述上基板为彩膜基板。
  4. 如权利要求1所述的LCD显示器，其中，所述第二偏光层位于所述第二衬底基板与所述第二功能层之间。
  5. 如权利要求1所述的LCD显示器，其中，所述第二偏光层位于所述第二功能层与所述液晶层之间，所述第二偏光层靠近所述液晶层的一侧上设有缓冲层。
  6. 如权利要求1所述的LCD显示器，其中，所述第一偏光层位于第一衬底基板与所述第一功能层之间。
  7. 如权利要求1所述的LCD显示器，其中，所述第一偏光层位于所述第一功能层与所述液晶层之间，所述第一偏光层靠近所述液晶层的一侧上设有缓冲层。
  8. 如权利要求1所述的LCD显示器，其中，所述第一偏光层与第二偏光层为碘系偏光层、染料系偏光层、或者金属光栅偏光层。
  9. 如权利要求1所述的LCD显示器，其中，所述第一衬底基板与第二衬底基板为玻璃基板。
  10. 一种LCD显示器，包括相对设置的下基板与上基板、设于下基板与上基板之间的液晶层、及位于所述下基板一侧的侧入式背光源；
    所述液晶层为自取向液晶材料，包含具有配向功能的材料；
    所述下基板包括第一衬底基板、位于所述第一衬底基板靠近所述液晶层一侧的第一功能层、及位于所述第一衬底基板靠近所述液晶层一侧的第一偏光层；
    所述上基板包括第二衬底基板、位于所述第二衬底基板靠近所述液晶层一侧的第二功能层、及位于所述第二衬底基板靠近或远离所述液晶层一侧的第二偏光层；
    所述第一衬底基板作为导光板，所述第一衬底基板的一侧面作为入光面正对所述侧入式背光源；
    其中，所述第一偏光层与第二偏光层为碘系偏光层、染料系偏光层、或者金属光栅偏光层；
    其中，所述第一衬底基板与第二衬底基板为玻璃基板。
  11. 如权利要求10所述的LCD显示器，其中，所述下基板为彩膜基板，所述上基板为TFT阵列基板。
  12. 如权利要求10所述的LCD显示器，其中，所述下基板为TFT阵列基板，所述上基板为彩膜基板。
  13. 如权利要求10所述的LCD显示器，其中，所述第二偏光层位于所述第二衬底基板与所述第二功能层之间。
  14. 如权利要求10所述的LCD显示器，其中，所述第二偏光层位于所述第二功能层与所述液晶层之间，所述第二偏光层靠近所述液晶层的一侧上设有缓冲层。
  15. 如权利要求10所述的LCD显示器，其中，所述第一偏光层位于第一衬底基板与所述第一功能层之间。
  16. 如权利要求10所述的LCD显示器，其中，所述第一偏光层位于所述第一功能层与所述液晶层之间，所述第一偏光层靠近所述液晶层的一侧上设有缓冲层。
PCT/CN2016/085776 2016-05-09 2016-06-15 Lcd显示器 WO2017193441A1 (zh)

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