WO2018129766A1 - 一种液晶显示器及其制备方法 - Google Patents

一种液晶显示器及其制备方法 Download PDF

Info

Publication number
WO2018129766A1
WO2018129766A1 PCT/CN2017/071958 CN2017071958W WO2018129766A1 WO 2018129766 A1 WO2018129766 A1 WO 2018129766A1 CN 2017071958 W CN2017071958 W CN 2017071958W WO 2018129766 A1 WO2018129766 A1 WO 2018129766A1
Authority
WO
WIPO (PCT)
Prior art keywords
pixel
sub
liquid crystal
crystal display
blue
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/071958
Other languages
English (en)
French (fr)
Inventor
马超
陈孝贤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US15/500,294 priority Critical patent/US20180217450A1/en
Publication of WO2018129766A1 publication Critical patent/WO2018129766A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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
    • 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
    • G02F1/133621—Illuminating devices providing coloured light
    • 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
    • G02F1/133617—Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
    • 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
    • G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
    • G02F1/133788—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by light irradiation, e.g. linearly polarised light photo-polymerisation
    • 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
    • G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/52—RGB geometrical arrangements
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/06—Materials and properties dopant

Definitions

  • the invention belongs to the field of liquid crystal display, and relates to a liquid crystal display and a preparation method thereof.
  • a liquid crystal display includes a CF (color filter) substrate and an Array substrate, and a transparent electrode is present on the opposite side of the substrate.
  • a layer of liquid crystal molecules is sandwiched between the two substrates, and the liquid crystal display controls the orientation of the liquid crystal molecules by an electric field, changes the polarization state of the light, and achieves the purpose of display by penetrating and blocking the optical path by the polarizing plate.
  • TFT-LCD Thin Film Transistor Liquid Crystal Display
  • VA vertical alignment
  • IPS in plane swiching
  • FFS far field swiching
  • the alignment technology widely used in TFT-LCD production is the brush alignment method.
  • the brush alignment method can provide strong alignment ability of liquid crystal molecules, but in the process of brushing, due to the contact friction of the flannel, static electricity and particle contamination are generated, and these pollutions often directly cause damage to the liquid crystal element.
  • the well-known non-contact alignment method is an alignment agent that irradiates a sensitizer with a line of ultraviolet light, which is called ultraviolet alignment method, referred to as optical alignment.
  • the light alignment is irradiated with the ultraviolet light of the line bias on the polymer polymer alignment agent having the sensitizer, and the advantage is that the surface of the glass substrate can be prevented from being contaminated, the alignment of the small area can be performed, and the reticle can be patterned.
  • the parameters of the liquid crystal cell such as the pretilt angle, the surface orientation intensity, and the like, can be controlled.
  • the general alignment agent of the photo-alignment method can be divided into three categories: the first type is the alignment film after being irradiated to the line ultraviolet light, in the direction of the polarization.
  • the molecules on the bond will bond to the molecules of the growth bond, so that the alignment film has an anisotropic distribution, and the liquid crystal molecules are aligned along the molecular direction of the long bond;
  • the second type is the long bond molecule in the direction of the polarization after the alignment film is illuminated. It will be destroyed by ultraviolet light, causing the alignment film to produce an anisotropic distribution, and the liquid crystal molecules will be aligned along the unbroken long bond molecules.
  • the third type is cis-trans, which generally uses an aligning agent containing azo molecules, and the alignment agent forms different alignment directions before and after illumination. All three types of alignment films produce good alignment, with high opening, high contrast and fast response.
  • quantum dots As an emerging display material, quantum dots have been widely recognized and paid attention to.
  • a quantum dot is a quasi-zero-dimensional nanomaterial composed of a small number of atoms. Roughly speaking, the dimensions of the three dimensions of quantum dots are all below 100 nanometers (nm), and the appearance is just like a tiny dot. The movement of internal electrons in all directions is limited, so the quantum confinement effect (quantum) The confinement effect) is particularly remarkable.
  • the excitation spectrum is wide and continuous, the emission spectrum is narrow and symmetrical, the color is adjustable, the photochemical stability is high, and the fluorescence lifetime is long, which is an ideal luminescent material.
  • quantum dots have two main types depending on the way energy is obtained, one is photoluminescence, and the other is electroluminescence.
  • the quantum dot luminescence color is the size effect of the quantum dot, that is, by controlling the shape, structure and size of the quantum dot to adjust its electron gap state, the size of the exciton binding energy, and the electron blue shift of the exciton energy.
  • liquid crystal display comprising:
  • a plurality of pixel structures each of which is composed of a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and an area of the blue sub-pixel is greater than or equal to a sum of a red sub-pixel and a green sub-pixel area.
  • the pixel structure is square.
  • the area of the blue sub-pixel occupies 1/2 of the area of each pixel structure, and the area of the red sub-pixel and the green sub-pixel is equal.
  • the red sub-pixel and the green sub-pixel are square in shape, each occupying 1/4 of the area of the pixel structure.
  • the pixel structures are arranged in an array.
  • the liquid crystal display backlight is blue light
  • the blue sub-pixel is illuminated by the backlight color
  • the red sub-pixel and the green sub-pixel are respectively doped with red and green quantum dot materials
  • liquid crystal display backlight is white light
  • the blue sub-pixel, the red sub-pixel and the green sub-pixel are respectively doped with blue, red and green quantum dot materials.
  • the mass fraction of the blue, red and green quantum dot materials is from 4% to 20%.
  • liquid crystal display comprises:
  • a plurality of pixel structures each of which is composed of a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and an area of the blue sub-pixel is greater than or equal to a sum of a red sub-pixel and a green sub-pixel area.
  • the pixel structure is a square, and each pixel structure is divided into four sub-areas of equal area.
  • the area of the blue sub-pixel occupies 1/2 of the area of each pixel structure, and the area of the red sub-pixel and the green sub-pixel is equal.
  • the red sub-pixel and the green sub-pixel are square in shape, each occupying 1/4 of the area of the pixel structure.
  • the pixel structures are arranged in an array.
  • the liquid crystal display backlight is blue light
  • the blue sub-pixel is illuminated by the backlight color
  • the red sub-pixel and the green sub-pixel are respectively doped with red and green quantum dot materials
  • liquid crystal display backlight is white light
  • the blue sub-pixel, the red sub-pixel and the green sub-pixel are respectively doped with blue, red and green quantum dot materials.
  • the mass fraction of the blue, red and green quantum dot materials is from 4% to 20%.
  • the color filter or the array substrate is arranged in the following manner:
  • the glass substrate is placed on the carrying platform, and the alignment agent on the glass substrate is irradiated with ultraviolet light by a reticle, and the linear ultraviolet light passes through the light transmitting region of the reticle to be irradiated on the pixel structure, thereby
  • the alignment agent on the pixel structure illuminated by the light forms a first alignment direction, keeps the illuminating direction of the reticle and the line ultraviolet light, and rotates the bearing platform to respectively perform optical alignment on other regions of the pixel structure to obtain different alignment directions.
  • Orientation film is used to obtain different alignment directions.
  • the color filter or the array substrate is arranged in the following manner:
  • the glass substrate is placed on the carrying platform, and the alignment agent on the glass substrate is irradiated with ultraviolet light at a certain irradiation angle by using the reticle, and the linear ultraviolet light passes through the transparent region of the reticle to be irradiated to the pixel.
  • a certain sub-area of the structure so that the alignment agent on the sub-area forms a first alignment direction, keeping the illuminating direction of the reticle and the line ultraviolet light, and rotating the bearing platform three times in a certain direction, each rotation angle For 90°, the other three sub-areas are optically aligned, and the second, third, and fourth alignment directions are sequentially formed, thereby obtaining an alignment film having four alignment directions, so that each pixel structure has four alignment directions. region.
  • the array side glass substrate is opposed to the color filter during the alignment process.
  • the initial position of the side glass substrate is rotated by 90°.
  • the shape of the reticle used in the alignment process is the same as the shape of the pixel structure, including a light transmitting region and a light shielding region, and the light transmitting region has the same shape as the red sub-pixel or the green sub-pixel. .
  • the irradiation angle ⁇ of the ultraviolet light is 88°-89.7°.
  • the provided pixel structure increases the area of the blue pixel, improves the blue light efficiency, and combines the provided pixel structure with the blue light-emitting quantum dot, so that the liquid crystal display can be added without additional cost.
  • FIG. 1 is a schematic diagram of a pixel structure.
  • Figure 2 is a schematic view of a photomask.
  • 3 is a schematic vertical view of the color filter aligned with the array substrate.
  • a liquid crystal display comprising:
  • each pixel structure being composed of a red sub-pixel, a green sub-pixel, and a blue sub-pixel, each pixel structure being divided into four equal-sized square sub-regions, the blue sub-pixels occupying two adjacent pixels For a sub-area, the area of the blue sub-pixel is twice the area of the red sub-pixel or the green sub-pixel.
  • the blue sub-pixels are illuminated by the backlight, and the pixel structures are arranged in an array.
  • the liquid crystal display is prepared by preparing and surface-treating the color filter and the array substrate according to a common TFT-LCD process.
  • the RGB color film is prepared by using a material doped with quantum dots, and the preparation method is: sequentially coating the red color and the green color excited by the blue light on the side surface of the color filter.
  • the transparent photoresist material of the quantum dot, the doping ratio of the red and green quantum dots may be 4% to 20% (mass ratio), and the film is dried by using a color filter process technology similar to that in the TFT-LCD process.
  • the shape exposure and development operations are performed to etch a pattern matching the cover.
  • the color filter and the array-side glass substrate are matched.
  • the shape of the reticle used is the same as the shape of the pixel structure, and includes a light transmitting region and a light shielding region, and the light transmitting region has the same shape as the one sub-region.
  • the alignment method of the color filter substrate is: placing the glass substrate on the bearing platform, and then applying the line polarized ultraviolet light to illuminate the glass substrate through the light transmitting area at a certain irradiation angle 88 (88°-89.7°) (at this time, it is considered
  • the horizontal direction of the substrate is 0°
  • the mask is kept unchanged
  • the rotating glass substrate is supported by 90° (clockwise or counterclockwise).
  • the repeated line is biased by ultraviolet light to align the movement ⁇ keep the mask and the ultraviolet light direction is not
  • the rotating glass substrate carries the platform 90° (same direction as the previous step), and so on, until one pixel structure (pixel) is divided into four regions for exposure alignment.
  • the aligning illumination mode of the array substrate is: placing the glass substrate on the bearing platform, applying the line polarized ultraviolet light to illuminate the glass substrate through the light transmission port at a certain irradiation angle 88 (88°-89.7°) (compared with the color filter alignment) , so that the initial position of the peeling substrate is 90°), keep the mask unchanged, rotate the glass substrate 90° (clockwise or counterclockwise), repeat the line ultraviolet light to illuminate the alignment action ⁇ keep the mask and UV
  • the illumination direction is unchanged, the rotating glass substrate carries the platform 90° (same direction as the previous step), and so on, until one pixel structure is divided into four regions for exposure alignment.
  • the color filter and the array substrate are paired such that the alignment directions of the upper and lower substrates exhibit a pair of mutually perpendicular directions (90° difference) and are combined with a blue backlight.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Liquid Crystal (AREA)
  • Geometry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)

Abstract

一种液晶显示器，包括：多个像素结构，每个像素结构由红色子像素、绿色子像素和蓝色子像素构成，其中蓝色子像素的面积大于或等于红色子像素和绿色子像素面积之和。该液晶显示器具备高曝光精度、高对比、快速响应和高分辨的特点。

Description

一种液晶显示器及其制备方法
本申请要求享有2017年1月13日提交的名称为“一种液晶显示器及其制备方法”的中国专利申请CN201710025425.1的优先权，其全部内容通过引用并入本文中。
技术领域
本发明属于液晶显示领域，涉及一种液晶显示器及其制备方法。
背景技术
液晶显示器(LCD)包含CF(color filter，彩色滤光片)基板和Array(阵列)基板，基板相对内侧存在透明电极。两片基板之间夹一层液晶分子，液晶显示器通过电场对液晶分子取向的控制，改变光的偏振状态，并藉由偏光板实现光路的穿透与阻挡，实现显示的目的。
TFT-LCD(薄膜晶体管液晶显示屏)由于具有低的功耗、优异的画面品质以及较高的生产良率等优异性能，已经逐渐占据了显示领域的主导地位。现在液晶面板根据显示模式的不同主要分为VA(vertical alignment，垂直配向)、IPS(in plane swiching，平面转换)和小尺寸常用的FFS(fringe field swiching，边缘场开关)技术。这些不同的显示技术中，配向方式又各有不同。目前在TFT-LCD生产中较为广泛应用的配向技术是磨刷配向法。磨刷配向法可以提供液晶分子较强的配向能力，但是在磨刷的过程中，由于利用绒布接触式的摩擦，会产生静电和颗粒的污染，而这些污染往往直接造成液晶元件的损坏。因此，为了避免静电和颗粒的污染，也为了比较容易的控制液晶分子的配向方式，研究者都在不断研究改进非接触式的配向方式。利用非接触式的配向方式，可以根据一些特定的图形的遮罩来制作小面积的配向，进而制作一些特别需求的液晶元件。其中被大家熟知的非接触式配向方法为用线偏紫外光照射有感光剂的配向剂，称之为紫外光配向法，简称光配向。
光配向利用线偏的紫外光照射在具有感光剂的高分子聚合物配向剂上，其优点为可避免玻璃基板表面的污染、可以进行小面积的配向、透过光罩可作图形的配向，利用入射光的角度与照射时间的长短，可以控制液晶单元的参数，如预倾角、表面定向强度等。一般光配向法的配向剂可以分为三大类：第一类为配向膜在照射到线偏紫外光后，在偏极方向 上的分子会键结成长键的分子，使得配向膜具有异方性的分布，液晶分子就顺着长键分子方向排列；第二类为配向膜光照后，在偏极方向上的长键分子会被紫外光所破坏，使配向膜产生非等向的分布，液晶分子就会顺着未被破坏的长键分子方向排列。第三类为cis-trans，一般是使用含有偶氮分子的配向剂，配向剂照光前后会形成不同的排列方向。此三类配向膜都可以产生不错的配向效果,具有高开口、高对比和快速响应等优点。
量子点作为新兴的显示器用材料，已经得到了广泛的认可和关注。量子点(quantum dot)是准零维(quasi-zero-dimensional)的纳米材料，由少量的原子所构成。粗略地说，量子点三个维度的尺寸都在100纳米(nm)以下，外观恰似一极小的点状物，其内部电子在各方向上的运动都受到局限，所以量子限域效应(quantum confinement effect)特别显著。其激发光谱宽且连续分布，发射光谱窄而对称，颜色可调，光化学稳定性高，荧光寿命长，是一种理想的发光材料。当前量子点根据能量的获得方式不同而主要有两类，其一为光致发光，其二为电致发光。量子点发光颜色是通过量子点的尺寸效应，即通过控制量子点的形状、结构和尺寸，以调节其能隙宽度、激子束缚能的大小以及激子的能量蓝移等电子状态。
发明内容
本发明一方面提供了一种液晶显示器，该液晶显示器包括：
多个像素结构，每个像素结构由红色子像素、绿色子像素和蓝色子像素构成，蓝色子像素的面积大于或等于红色子像素和绿色子像素面积之和。
根据本发明优选的实施方式，所述像素结构为正方形。
根据本发明的优选实施方式，所述蓝色子像素的面积占每个像素结构面积的1/2，红色子像素与绿色子像素的面积相等。优选地，所述红色子像素和绿色子像素形状均为正方形，各占像素结构的面积的1/4。
根据本发明优选的实施方式，所述像素结构成阵列方式排布。
根据本发明优选的实施方式，所述液晶显示器背光为蓝光，蓝色子像素依靠背光颜色发光，红色子像素和绿色子像素分别掺杂有红色和绿色量子点材料；
或所述液晶显示器背光为白光，蓝色子像素、红色子像素和绿色子像素分别掺杂有蓝色、红色和绿色量子点材料。
根据本发明优选的实施方式，所述蓝色、红色和绿色量子点材料的质量分数为4％-20％。
根据本发明的另一方面，提供了所述的液晶显示器的制备方法，包括以下步骤：
S1、分别对彩色滤光片和阵列基板进行制备和表面处理；
S2、光配向，在彩色滤光片基板和阵列基板上分别涂布配向剂，光照形成配向膜；
S3、将彩色滤光片和阵列基板进行对组。
其中，该液晶显示器包括：
多个像素结构，每个像素结构由红色子像素、绿色子像素和蓝色子像素构成，蓝色子像素的面积大于或等于红色子像素和绿色子像素面积之和。
根据本发明优选的实施方式，所述像素结构为正方形，每个像素结构分为四个面积相等的子区域。
根据本发明的优选实施方式，所述蓝色子像素的面积占每个像素结构面积的1/2，红色子像素与绿色子像素的面积相等。优选地，所述红色子像素和绿色子像素形状均为正方形，各占像素结构的面积的1/4。
根据本发明优选的实施方式，所述像素结构成阵列方式排布。
根据本发明优选的实施方式，所述液晶显示器背光为蓝光，蓝色子像素依靠背光颜色发光，红色子像素和绿色子像素分别掺杂有红色和绿色量子点材料；
或所述液晶显示器背光为白光，蓝色子像素、红色子像素和绿色子像素分别掺杂有蓝色、红色和绿色量子点材料。
根据本发明优选的实施方式，所述蓝色、红色和绿色量子点材料的质量分数为4％-20％。
根据本发明优选的实施方式，所述彩色滤光片或阵列基板配向方式为：
将玻璃基板放置于承载平台上，利用光罩对所述玻璃基板上的配向剂进行线偏紫外光照射，线偏紫外光穿过光罩的透光区而对应照射在像素结构上，从而使被光照射的像素结构上的配向剂形成第一配向方向，保持光罩和线偏紫外光照射方向不变，旋转承载平台，分别对像素结构的其他区域进行光配向，得到具有不同配向方向的配向膜。
根据本发明的一种优选实施方式，所述彩色滤光片或阵列基板配向方式为：
将玻璃基板放置于承载平台上，利用光罩对所述玻璃基板上的配向剂按照一定的照射角度进行线偏紫外光照射，线偏紫外光穿过光罩的透光区而对应照射在像素结构的某一子区域上，从而使该子区域上的配向剂形成第一配向方向，保持光罩和线偏紫外光照射方向不变，按照一定方向依次旋转承载平台3次，每次旋转角度为90°，分别对另外三个子区域进行光配向，依次形成第二、第三、第四配向方向，从而得到具有四种配向方向的配向膜，使每一个像素结构具有四种配向方向的子区域。
根据本发明优选的实施方式，在配向过程中，所述阵列侧玻璃基板相对于彩色滤光片 侧玻璃基板的初始位置旋转90°。
根据本发明优选的实施方式，在配向过程中使用的光罩的形状与所述像素结构形状相同，包括透光区和遮光区，透光区与所述红色子像素或绿色子像素的形状相同。
根据本发明优选的实施方式，所述光配向过程中，紫外光的照射角度Θ为88°-89.7°。
在本发明中，所提供的像素结构增大了蓝色像素的面积，使蓝光效率提高，使用所提供的像素结构与蓝光激发量子点结合，使该液晶显示器在不增加额外成本的情况下，具备高曝光精度、更广的视角、高色饱和度、无色偏、高对比、快速响应和高分辨的特点。
附图说明
附图用来提供对本发明的进一步理解，并且构成说明书的一部分，与本发明的实施例共同用于解释本发明，并不构成对本发明的限制。在附图中：
图1为像素结构示意图。
图2是光罩示意图。
图3是彩色滤光片与阵列基板配向后相互垂直示意图。
图4是单侧配向后液晶导向示意图。
具体实施方式
以下结合实施例对本发明进行详细说明，但本发明并不受下述实施例限定。
实施例1
一种液晶显示器，该液晶显示器包括：
多个像素结构，每个像素结构由红色子像素、绿色子像素和蓝色子像素构成，每个像素结构分为4个大小相等的正方形子区域，所述蓝色子像素占据相邻的两个子区域，蓝色子像素的面积是红色子像素或绿色子像素面积的两倍。其中蓝色子像素依靠背光发光，像素结构成阵列方式排布。
所述的液晶显示器的制备方法为：按照常用的TFT-LCD制程，分别对彩色滤光片和阵列基板进行制备和表面处理。其中，彩色滤光片基板在配向层涂布前，RGB彩膜采用掺杂有量子点的材料制备，制备方法为：在彩色滤光片侧表面依次涂布混有可蓝光激发的红色、绿色量子点的透明光阻材料，红色和绿色量子点的掺杂比例可为4％～20％(质量比)，采用类似TFT-LCD制程中彩色滤光片制程技术，对该膜进行烘干，并进行形曝光和显影动作，蚀刻出与罩搭配的图案。
在进行成盒制程时，涂布完光配向聚合物后，对彩色滤光片和阵列侧玻璃基板进行配 向动作，所使用的光罩的形状与所述像素结构形状相同，包括透光区和遮光区，所述透光区与所述一个子区域的形状相同。
所述彩色滤光片基板配向照射方式为：将玻璃基板放置于承载平台，然后施加线偏紫外光以一定的照射角度Θ(88°-89.7°)通过透光区照射玻璃基板(此时认为基板水平方向摆放呈0°)，保持光罩不变，旋转玻璃基板承载平台90°(顺时针或逆时针均可)，重复线偏紫外光照射配向动作→保持光罩以及紫外光照方向不变，旋转玻璃基板承载平台90°(与上一步保持相同方向)，以此类推，直至一个像素结构(pixel)被分为4个区域的曝光配向完成。
所述阵列基板配向照射方式为：将玻璃基板放置于承载平台，施加线偏紫外光以一定的照射角度Θ(88°-89.7°)通过透光口照射玻璃基板(相较彩色滤光片配向，使剥离基板初始水平方向摆放位置呈90°)，保持光罩不变，旋转玻璃基板90°(顺时针或逆时针均可)，重复线偏紫外光照射配向动作→保持光罩以及紫外光照方向不变，旋转玻璃基板承载平台90°(与上一步保持相同方向)，以此类推，直至一个像素结构被分为4个区域的曝光配向完成。
将彩色滤光片和阵列基板进行对组，使得上下基板的配向方向呈现相互垂直方向的对组(相差90°)，并搭配蓝光背光。
虽然在上文中已经参考了一些实施例对本发明进行了描述，然而在不脱离本发范围的情况下，可以对其进行各种改进。本发明所披露的各个实施例中的各项特征均可通过任意方式相互结合起来使用，在本说明书中未对这些组合的情况进行穷举性的描述仅仅是出于省略篇幅和节约资源的考虑。因此，本发明并不局限于文中公开的特定实施例，而是落入权利要求的范围的所有技术方案。
附图标记说明
1   光罩遮光区
2   光罩透光区
3   线偏紫外光
4   彩色滤光片基板
5   阵列基板

Claims (19)

  1. 一种液晶显示器，该液晶显示器包括：
    多个像素结构，每个像素结构由红色子像素、绿色子像素和蓝色子像素构成，其中蓝色子像素的面积大于或等于红色子像素和绿色子像素面积之和。
  2. 根据权利要求1所述的液晶显示器，其中，所述像素结构为正方形。
  3. 根据权利要求1所述的液晶显示器，其中，所述蓝色子像素的面积占每个像素结构面积的1/2，红色子像素与绿色子像素的面积相等。
  4. 根据权利要求1所述的液晶显示器，其中，所述像素结构成阵列方式排布。
  5. 根据权利要求1所述的液晶显示器，其中，所述液晶显示器背光为蓝光，蓝色子像素依靠背光颜色发光，红色子像素和绿色子像素中分别掺杂有可蓝光激发红色和绿色量子点材料。
  6. 根据权利要求1所述的液晶显示器，其中，所述液晶显示器背光为白光，蓝色子像素、红色子像素和绿色子像素中分别掺杂有蓝色、红色和绿色量子点材料。
  7. 根据权利要求5所述的液晶显示器，其中，所述红色和绿色量子点材料的质量分数分别为4％-20％。
  8. 根据权利要求6所述的液晶显示器，其中，所述蓝色、红色和绿色量子点材料的质量分数分别为4％-20％。
  9. 一种液晶显示器的制备方法，包括以下步骤：
    S1、分别对彩色滤光片和阵列基板进行制备和表面处理；
    S2、光配向，在彩色滤光片基板和阵列基板上分别涂布配向剂，光照形成配向膜；
    S3、将彩色滤光片和阵列基板进行对组；
    其中，该液晶显示器包括多个像素结构，每个像素结构由红色子像素、绿色子像素和蓝色子像素构成，蓝色子像素的面积大于或等于红色子像素和绿色子像素面积之和。
  10. 根据权利要求9所述的方法，其中，所述像素结构为正方形。
  11. 根据权利要求9所述的方法，其中，所述蓝色子像素的面积占每个像素结构面积的1/2，红色子像素与绿色子像素的面积相等。
  12. 根据权利要求9所述的方法，其中，所述像素结构成阵列方式排布。
  13. 根据权利要求9所述的方法，其中，所述液晶显示器背光为蓝光，蓝色子像素依靠背光颜色发光，红色子像素和绿色子像素分别掺杂有可蓝光激发红色和绿色量子点材料或所述液晶显示器背光为白光，蓝色子像素、红色子像素和绿色子像素分别掺杂有蓝色、红色和绿色量子点材料。
  14. 根据权利要求13所述的方法，其中，所述蓝色、红色或绿色量子点材料的质量分数分别为4％-20％。
  15. 根据权利要求11所述的方法，其中，所述彩色滤光片或阵列基板配向方式为：
    将玻璃基板放置于承载平台上，利用光罩对所述玻璃基板上的配向剂进行线偏紫外光照射，线偏紫外光穿过光罩的透光区而对应照射在像素结构上，从而使被光照射的像素结构上的配向剂形成第一配向方向，保持光罩和线偏紫外光照射方向不变，旋转承载平台，分别对像素结构的其他区域进行光配向，得到具有不同配向方向的配向膜。
  16. 根据权利要求15所述的方法，其中，所述承载平台旋转3次，每次旋转角度为90°。
  17. 根据权利要求16所述的方法，其中，在配向过程中，所述阵列侧玻璃基板相对于彩色滤光片侧玻璃基板的初始位置旋转90°。
  18. 根据权利要求15所述的方法，其中，在配向过程中使用的光罩的形状与所述像素结构形状相同，包括透光区和遮光区，透光区与所述红色子像素或者绿色子像素的形状相同。
  19. 根据权利要求15所述的方法，其中，所述光配向过程中，线偏紫外光的照射角度Θ为88°-89.7°。
PCT/CN2017/071958 2017-01-13 2017-01-20 一种液晶显示器及其制备方法 Ceased WO2018129766A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/500,294 US20180217450A1 (en) 2017-01-13 2017-01-20 Liquid crystal display device and method for manufacturing the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710025425.1A CN106773216A (zh) 2017-01-13 2017-01-13 一种液晶显示器及其制备方法
CN201710025425.1 2017-01-13

Publications (1)

Publication Number Publication Date
WO2018129766A1 true WO2018129766A1 (zh) 2018-07-19

Family

ID=58945495

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/071958 Ceased WO2018129766A1 (zh) 2017-01-13 2017-01-20 一种液晶显示器及其制备方法

Country Status (3)

Country Link
US (1) US20180217450A1 (zh)
CN (1) CN106773216A (zh)
WO (1) WO2018129766A1 (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108828828B (zh) * 2018-06-25 2020-11-24 深圳市华星光电技术有限公司 改善量子点液晶显示器的显示画面偏黄的方法及量子点液晶显示器
CN108983509B (zh) * 2018-07-25 2021-03-23 Tcl华星光电技术有限公司 液晶显示模组以及液晶显示装置
KR102746317B1 (ko) 2019-05-24 2024-12-24 삼성디스플레이 주식회사 양자점-폴리머 복합체 패턴, 그 제조방법, 및 이를 포함하는 전자 소자
CN110993824A (zh) * 2019-12-19 2020-04-10 京东方科技集团股份有限公司 Oled显示屏及其制备方法、显示装置
CN111583876B (zh) * 2020-05-29 2021-06-01 深圳市华星光电半导体显示技术有限公司 背光模组制备方法及装置
CN118647966A (zh) * 2022-02-14 2024-09-13 高通股份有限公司 显示掩模层生成和运行时调整
CN114879414A (zh) * 2022-04-26 2022-08-09 成都中电熊猫显示科技有限公司 一种显示面板和显示装置
CN114935855B (zh) * 2022-05-24 2024-07-12 Tcl华星光电技术有限公司 显示面板、显示面板制备方法及显示装置
CN114864652B (zh) * 2022-07-08 2022-12-09 惠科股份有限公司 显示面板、显示模组和显示装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000187231A (ja) * 1998-12-24 2000-07-04 Hitachi Ltd 液晶表示装置
US6100861A (en) * 1998-02-17 2000-08-08 Rainbow Displays, Inc. Tiled flat panel display with improved color gamut
JP2001255520A (ja) * 2000-03-10 2001-09-21 Fuji Photo Film Co Ltd カラー液晶表示素子
KR20030056350A (ko) * 2001-12-28 2003-07-04 엘지.필립스 엘시디 주식회사 액정표시패널과 그의 구동장치 및 구동방법
JP2009229791A (ja) * 2008-03-24 2009-10-08 Hitachi Displays Ltd 液晶表示装置
CN105487301A (zh) * 2016-02-15 2016-04-13 深圳市华星光电技术有限公司 垂直光配向方法及液晶显示面板的制作方法
CN105511155A (zh) * 2016-02-22 2016-04-20 深圳市华星光电技术有限公司 量子点彩色滤光片的制造方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3240125B2 (ja) * 1998-08-24 2001-12-17 松下電器産業株式会社 反射型液晶表示素子
JP5770073B2 (ja) * 2011-11-25 2015-08-26 株式会社ジャパンディスプレイ 表示装置及び電子機器
CN102736314B (zh) * 2012-06-29 2015-03-25 京东方科技集团股份有限公司 一种液晶面板及其制作方法以及液晶显示器
CN103235442B (zh) * 2013-04-22 2016-07-06 京东方科技集团股份有限公司 一种彩膜基板、显示面板及显示装置
CN104576696B (zh) * 2014-12-22 2017-12-19 昆山国显光电有限公司 一种像素结构及采用该像素结构的有机发光显示器
CN104716163B (zh) * 2015-03-26 2018-03-16 京东方科技集团股份有限公司 像素结构以及显示基板和显示装置
CN104778919A (zh) * 2015-04-16 2015-07-15 上海善星实业有限公司 一种oled面板及驱动方法和蒸镀用的fmm
CN105261635A (zh) * 2015-10-29 2016-01-20 Tcl集团股份有限公司 发光二极管像素排列结构、印刷型显示装置及制备方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6100861A (en) * 1998-02-17 2000-08-08 Rainbow Displays, Inc. Tiled flat panel display with improved color gamut
JP2000187231A (ja) * 1998-12-24 2000-07-04 Hitachi Ltd 液晶表示装置
JP2001255520A (ja) * 2000-03-10 2001-09-21 Fuji Photo Film Co Ltd カラー液晶表示素子
KR20030056350A (ko) * 2001-12-28 2003-07-04 엘지.필립스 엘시디 주식회사 액정표시패널과 그의 구동장치 및 구동방법
JP2009229791A (ja) * 2008-03-24 2009-10-08 Hitachi Displays Ltd 液晶表示装置
CN105487301A (zh) * 2016-02-15 2016-04-13 深圳市华星光电技术有限公司 垂直光配向方法及液晶显示面板的制作方法
CN105511155A (zh) * 2016-02-22 2016-04-20 深圳市华星光电技术有限公司 量子点彩色滤光片的制造方法

Also Published As

Publication number Publication date
CN106773216A (zh) 2017-05-31
US20180217450A1 (en) 2018-08-02

Similar Documents

Publication Publication Date Title
WO2018129766A1 (zh) 一种液晶显示器及其制备方法
US10534223B2 (en) Display panel and manufacture thereof
US9766493B2 (en) Liquid crystal display
TW556031B (en) Non-rubbing liquid crystal alignment method
CN105487301B (zh) 垂直光配向方法及液晶显示面板的制作方法
CN104730754B (zh) 液晶显示面板
WO2017092090A1 (zh) 量子点彩膜基板的制作方法
CN101622572A (zh) 液晶显示装置及其制造方法
TWI452399B (zh) 液晶顯示面板及其製造方法
WO2017080036A1 (zh) Pdlc显示装置的制作方法及pdlc显示装置
US10365512B2 (en) Display panel
US8797643B2 (en) Light irradiation apparatus
US20150015840A1 (en) Liquid crystal display device and manufacturing method for the same, and liquid crystal alignment regulation force decision method
WO2019223203A1 (zh) 在液晶面板中内置偏光片的方法、液晶显示装置及其制作方法
US20100128205A1 (en) Display substrate and method for manufacturing the same
US11275275B2 (en) Photoalignment method and photoalignment device
KR101874396B1 (ko) 퀀텀 로드 발광 표시장치 및 이의 제조 방법
CN100440011C (zh) 形成定向层的方法和利用其制造液晶显示器件的方法
CN107255891B (zh) 一种显示装置的制作方法
WO2020024404A1 (zh) 掩膜版及柔性液晶显示面板的制备方法
CN109491137B (zh) 光调制量子点彩色显示器及其制造方法
KR100730498B1 (ko) 액정 표시 소자 및 그의 제조 방법
WO2018171046A1 (zh) 显示面板和显示面板的制程
JP2000227595A (ja) 液晶表示素子の製造方法
Gao et al. 72‐2: Invited Paper: Color‐Conversion Liquid Crystal Display with In‐Cell Polarizer

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 15500294

Country of ref document: US

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17891545

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17891545

Country of ref document: EP

Kind code of ref document: A1