WO2020082473A1 - 彩色滤光基板及液晶显示装置 - Google Patents

彩色滤光基板及液晶显示装置 Download PDF

Info

Publication number
WO2020082473A1
WO2020082473A1 PCT/CN2018/116283 CN2018116283W WO2020082473A1 WO 2020082473 A1 WO2020082473 A1 WO 2020082473A1 CN 2018116283 W CN2018116283 W CN 2018116283W WO 2020082473 A1 WO2020082473 A1 WO 2020082473A1
Authority
WO
WIPO (PCT)
Prior art keywords
quantum dot
substrate
layer
filter unit
dot filter
Prior art date
Application number
PCT/CN2018/116283
Other languages
English (en)
French (fr)
Inventor
杨超群
黄长治
Original Assignee
武汉华星光电技术有限公司
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 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US16/335,253 priority Critical patent/US20200133053A1/en
Publication of WO2020082473A1 publication Critical patent/WO2020082473A1/zh

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
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133553—Reflecting elements
    • 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
    • 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

Definitions

  • the present invention relates to the field of display technology, in particular to a color filter substrate and a liquid crystal display device.
  • LCD Liquid crystal display
  • PDAs personal digital assistants
  • digital cameras computer screens or laptop screens, etc.
  • the working principle of a liquid crystal display is to infuse liquid crystal molecules between a thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT Array Substrate) and a color filter substrate (Color Filter Substrate, CF Substrate), and apply it to the two substrates
  • the driving voltage controls the rotation direction of the liquid crystal molecules to refract the light of the backlight module to generate a picture.
  • the color of the liquid crystal display is realized by color filters (CF).
  • Traditional color filters include red, green, and blue photoresists arranged in a certain order. When the light emitted from the backlight passes through the red, green, and blue photoresists, only the corresponding red, green, and blue photoresists The light in the color band can be transmitted to convert the light emitted by the backlight into three colors of red, green and blue.
  • the traditional color filter has poor utilization of light, low transmittance, and the transmission peak of the traditional color resist material is wide, the color density is limited, it is difficult to achieve the shortcomings of wide color gamut, and can no longer satisfy users Requirements for display quality.
  • Quantum dots are spherical semiconductor nanoparticles composed of II-VI, or III-V group elements, and the particle size is generally between a few nanometers and tens of nanometers. Due to the existence of quantum confinement effect, the quantum dot material can change the original continuous energy band into a discrete energy level structure, which can emit visible light when excited by the outside world. The quantum dot material has a smaller half-height width and the emission color can be easily adjusted by the size, structure or composition of the quantum dot material. Therefore, it is used in display devices to replace the existing red photoresist and green For the photoresist and blue photoresist, other structures will continue to use the technical process of the traditional liquid crystal display device.
  • the black matrix is used to separate each quantum dot filter unit to ensure that there is no color mixing between different colors.
  • the current quantum filter unit has a thick film Generally, it is 3-6um, but with the current technology, the black matrix can not achieve the level of 2um or more, so it is difficult to separate different quantum filter units with a single layer of black matrix, and color mixing is likely to occur, resulting in poor display.
  • the object of the present invention is to provide a color filter unit, which can effectively separate each quantum dot filter unit, improve light utilization rate, and avoid color mixing.
  • the object of the present invention is also to provide a liquid crystal display device, which can effectively separate each quantum dot filter unit, improve light utilization rate, and avoid color mixing.
  • the present invention provides a color filter substrate, including a base substrate, a plurality of quantum dot filter units arranged in an array on the base substrate, and a Retaining wall located between each quantum dot filter unit;
  • the retaining wall includes a black matrix layer provided on the base substrate and a reflective layer provided on the black matrix layer.
  • the thickness of the retaining wall is greater than the thickness of the quantum dot filter unit.
  • the reflectivity of the reflective layer is greater than 70%
  • the thickness of the reflective layer is 3 ⁇ m to 6 ⁇ m, and the optical density value of each micrometer thickness of the reflective layer is greater than 1.
  • the color filter substrate further includes a protective layer located on each quantum dot filter unit and the retaining wall, and a water and oxygen barrier layer located between each quantum dot filter unit and the protective layer.
  • the multiple quantum dot filter units include red quantum dot filter units, green quantum dot filter units, and blue quantum dot filter units that are alternately arranged in this order.
  • a blue filter layer is further provided between the red quantum dot filter unit and the base substrate and between the green quantum dot filter unit and the base substrate.
  • the invention also provides a liquid crystal display device, comprising: a backlight module and a liquid crystal display panel located above the backlight module;
  • the liquid crystal display panel includes: a color filter substrate, a counter substrate opposite to the color filter substrate, and a liquid crystal layer between the color filter substrate and the counter substrate; the backlight module is located The side of the opposite substrate away from the color filter substrate;
  • the color filter substrate includes a first base substrate, a plurality of quantum dot filter units arranged in an array arranged on the first base substrate, and each quantum located on the first base substrate Retaining wall between point filter units;
  • the retaining wall includes a black matrix layer provided on the first base substrate and a reflective layer provided on the black matrix layer.
  • the thickness of the retaining wall is greater than the thickness of the quantum dot filter unit.
  • the reflectivity of the reflective layer is greater than 70%
  • the thickness of the reflective layer is 3 ⁇ m to 6 ⁇ m, and the optical density value of the reflective layer per 1 ⁇ m thickness is greater than 1.
  • the color filter substrate further includes a protective layer located on each quantum dot filter unit and the blocking wall, and a water and oxygen barrier layer located between each quantum dot filter unit and the protective layer.
  • the plurality of quantum dot filter units include red quantum dot filter units, green quantum dot filter units, and blue quantum dot filter units that are alternately arranged in sequence;
  • a blue filter layer is further provided between the red quantum dot filter unit and the base substrate and between the green quantum dot filter unit and the base substrate.
  • the liquid crystal display device further includes a first polarizing layer and a second polarizing layer;
  • the first polarizing layer is located between the opposite substrate and the backlight module, and the second polarizing layer is located between the color filter substrate and the liquid crystal layer.
  • the present invention provides a color filter substrate.
  • the color filter substrate includes a base substrate, a plurality of quantum dot filter units arranged in an array on the base substrate, and a quantum dot filter unit provided on the base substrate A retaining wall;
  • the retaining wall includes a black matrix layer provided on the base substrate and a reflective layer provided on the black matrix layer, the thickness of the retaining wall is greater than the thickness of the quantum dot filter unit
  • the reflective layer can re-reflect the light irradiated on its surface to the quantum dot filter unit for secondary use, improve the light utilization rate and prevent the light from passing through to other quantum dot filter units to cause color mixing.
  • the invention also provides a liquid crystal display device, which can effectively separate each quantum dot filter unit, improve light utilization rate and avoid color mixing.
  • FIG. 1 is a structural diagram of a color filter substrate of the present invention
  • FIG. 2 is a structural diagram of a liquid crystal display device of the present invention.
  • the present invention provides a color filter substrate, including a base substrate 10, a plurality of quantum dot filter units 20 arranged in an array on the base substrate 10, and the substrate A barrier wall 30 between the quantum dot filter units 20 located on the substrate 10;
  • the retaining wall 30 includes a black matrix layer 31 disposed on the base substrate 10 and a reflective layer 32 disposed on the black matrix layer 31.
  • the thickness of the retaining wall 30 is greater than that of the quantum dot filter unit 20 thickness.
  • the reflective layer 32 by stacking the reflective layer 32 on the black matrix layer 31 to form a barrier wall 30 to separate each quantum dot filter unit 20, the lack of the thickness of the black matrix layer 31 can be made up so that the thickness of the barrier wall 30 is greater than the quantum dots
  • the light on the surface of the reflective layer 32 includes the light excited by the quantum dot filter unit 20 and the incident backlight.
  • the reflective layer 32 can also block the light irradiated on the surface from entering the other quantum dot filter unit 20. Avoid color mixing and ensure the display effect.
  • the present invention provides that the reflectivity of the reflective layer 32 is greater than 70%, the thickness of the reflective layer 32 is 3 ⁇ m to 6 ⁇ m, and the optical thickness of the reflective layer 32 per micron thickness
  • the density values are all greater than 1, so as to ensure that most of the light irradiated on the surface of the reflective layer 32 is reflected back into the quantum dot filter unit 20, and the remaining part is absorbed by the reflective layer 32, effectively preventing the light from traversing into the quantum dot filter unit 20 , Causing color mixing or color shift.
  • the color filter substrate further includes a protective layer 40 located on each quantum dot filter unit 20 and barrier wall 30, and a water oxygen barrier layer 50 located between each quantum dot filter unit 20 and protective layer 40,
  • the water-oxygen barrier layer 50 is used to prevent the quantum dot filter unit 20 from being penetrated by water-oxygen, resulting in device failure.
  • the plurality of quantum dot filter units 20 include a red quantum dot filter unit R, a green quantum dot filter unit G, and a blue quantum dot filter unit B that are alternately arranged in this order.
  • a blue filter layer 60 is also provided between the light unit R and the base substrate 10 and between the green quantum dot filter unit G and the base substrate 10, the red quantum dot filter unit R, the green quantum dot filter unit G And blue quantum dot filter unit B are used to generate red light, green light and blue light under the excitation of the incident backlight, respectively, and the blue light filter layer 60 is used for further filtering the red light and green light to remove The blue light component improves the color purity.
  • the present invention also provides a liquid crystal display device, including: a backlight module 1 and a liquid crystal display panel 2 located above the backlight module 1;
  • the liquid crystal display panel 2 includes: a color filter substrate 21, a counter substrate 22 opposite to the color filter substrate 21, and a liquid crystal layer 23 between the color filter substrate 21 and the counter substrate 22;
  • the backlight module 1 is located on a side of the opposite substrate 22 away from the color filter substrate 21;
  • the color filter substrate 21 includes a first base substrate 10, a plurality of quantum dot filter units 20 arranged in an array on the first base substrate 10, and the first base substrate 10 The retaining wall 30 between the quantum dot filter units 20 on the top;
  • the retaining wall 30 includes a black matrix layer 31 disposed on the first base substrate 10 and a reflective layer 32 disposed on the black matrix layer 31.
  • the thickness of the retaining wall 30 is greater than the quantum dot filter The thickness of the light unit 20.
  • the reflective layer 32 by stacking the reflective layer 32 on the black matrix layer 31 to form a barrier wall 30 to separate each quantum dot filter unit 20, the lack of the thickness of the black matrix layer 31 can be made up so that the thickness of the barrier wall 30 is greater than the quantum dots
  • the light on the surface of the reflective layer 32 includes the light excited by the quantum dot filter unit 20 and the incident backlight.
  • the reflective layer 32 can also block the light irradiated on the surface from entering the other quantum dot filter unit 20. Avoid color mixing and ensure the display effect.
  • the present invention provides that the reflectivity of the reflective layer 32 is greater than 70%, the thickness of the reflective layer 32 is 3 ⁇ m to 6 ⁇ m, and the optical thickness of the reflective layer 32 per micron thickness
  • the density values are all greater than 1, so as to ensure that most of the light irradiated on the surface of the reflective layer 32 is reflected back into the quantum dot filter unit 20, and the remaining part is absorbed by the reflective layer 32, effectively preventing the light from traversing into the quantum dot filter unit 20 , Causing color mixing or color shift.
  • the color filter substrate further includes a protective layer 40 located on each quantum dot filter unit 20 and barrier wall 30, and a water oxygen barrier layer 50 located between each quantum dot filter unit 20 and protective layer 40,
  • the water-oxygen barrier layer 50 is used to prevent the quantum dot filter unit 20 from being penetrated by water-oxygen, resulting in device failure.
  • the plurality of quantum dot filter units 20 include a red quantum dot filter unit R, a green quantum dot filter unit G, and a blue quantum dot filter unit B that are alternately arranged in this order.
  • a blue filter layer 60 is also provided between the light unit R and the base substrate 10 and between the green quantum dot filter unit G and the base substrate 10, the red quantum dot filter unit R, the green quantum dot filter unit G And blue quantum dot filter unit B are used to generate red light, green light and blue light under the excitation of the incident backlight, respectively, and the blue light filter layer 60 is used for further filtering the red light and green light to remove The blue light component improves the color purity.
  • the counter substrate 22 is an array substrate on which a thin film transistor array is formed.
  • a spacer 90 for supporting a gap between the opposed substrate 22 and the color filter substrate 21 is further formed between the opposed substrate 22 and the color filter substrate 21, the spacer 90
  • the main spacer and the auxiliary spacer with a height smaller than the main spacer are included, and the spacer 90 is located above the area where the retaining wall 30 is located.
  • the present invention adjusts the position of the polarizer of the liquid crystal display device.
  • the liquid crystal display device further includes a first polarizing layer 70 and The second polarizing layer 80; the first polarizing layer 70 is located between the opposite substrate 22 and the backlight module 1, the second polarizing layer 80 is located between the color filter substrate 21 and the liquid crystal layer 23, by The second polarizing layer 80 is located between the color filter substrate 21 and the liquid crystal layer 23 to avoid the problem that the light generated by the quantum dot filter unit 20 is unpolarized light and cannot be emitted from the polarizing layer.
  • the polarizing axes of the first polarizing layer 70 and the second polarizing layer 80 are perpendicular.
  • the second polarizing layer 80 is a metal grating polarizing layer.
  • the present invention provides a color filter substrate.
  • the color filter substrate includes a base substrate, a plurality of quantum dot filter units arranged in an array on the base substrate, and a quantum dot filter unit provided on the base substrate A retaining wall;
  • the retaining wall includes a black matrix layer provided on the base substrate and a reflective layer provided on the black matrix layer, the thickness of the retaining wall is greater than the thickness of the quantum dot filter unit
  • the reflective layer can re-reflect the light irradiated on its surface to the quantum dot filter unit for secondary use, improve the light utilization rate and prevent the light from passing through to other quantum dot filter units to cause color mixing.
  • the invention also provides a liquid crystal display device, which can effectively separate each quantum dot filter unit, improve light utilization rate and avoid color mixing.

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)
  • Liquid Crystal (AREA)
  • Optical Filters (AREA)

Abstract

一种彩色滤光基板（21）及液晶显示装置。彩色滤光基板（21）包括衬底基板（10）、设于衬底基板（10）上的阵列排布的多个量子点滤光单元（20）及设于衬底基板（10）上位于各个量子点滤光单元（20）之间的挡墙（30）；挡墙（30）包括设于衬底基板（10）上的黑色矩阵层（31）以及设于黑色矩阵层（31）上的反射层（32），挡墙（30）的厚度大于量子点滤光单元（20）的厚度，反射层（32）能够将照射到其表面的光线重新反射到量子点滤光单元（20）中进行二次利用，提升光线利用率的同时避免光线穿越到其他量子点滤光单元（20）中出现混色。

Description

彩色滤光基板及液晶显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种彩色滤光基板及液晶显示装置。
背景技术
液晶显示器(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。如：液晶电视、移动电话、个人数字助理(PDA)、数字相机、计算机屏幕或笔记本电脑屏幕等，在平板显示领域中占主导地位。
液晶显示器的工作原理是在薄膜晶体管阵列基板(Thin Film Transistor Array Substrate，TFT Array Substrate)与彩色滤光片基板(Color Filter Substrate，CF Substrate)之间灌入液晶分子，并在两片基板上施加驱动电压来控制液晶分子的旋转方向，以将背光模组的光线折射出来产生画面。
液晶显示器的色彩是依靠彩色滤光片(CF，color filter)来实现的。传统的彩色滤光片包括有按一定顺序排列红色光阻、绿色光阻及蓝色光阻，从背光源发出的光，经过红色、绿色、及蓝色光阻时，只有对应红色、绿色、及蓝色波段的光可以透过，以将背光源发出的光线转换成红绿蓝三种颜色的光线。然而，传统的彩色滤光片存在对光线的利用率不佳，透过率低下，且传统色阻材料的透射峰较宽，色浓度受限，难以实现广色域的缺点，已不能满足用户对显示画质的要求。
量子点(Quantum Dots，QDs)是一种由Ⅱ-Ⅵ、或Ⅲ-Ⅴ族元素组成的球形半导体纳米微粒，粒径一般在几纳米至数十纳米之间。量子点材料由于量子限域效应的存在，原本连续的能带变成分立的能级结构，受外界激发后可发射可见光。量子点材料由于其发光峰具有较小的半高宽且发光颜色可通过量子点材料的尺寸、结构或成分进行简易调节，因此，将其应用在显示装置中取代现有的红色光阻、绿色光阻及蓝色光阻，其他结构会继续沿用传统液晶显示装置的技术工艺，用黑色矩阵分隔各个量子点滤光单元，保证不同颜色间不出现混色现象，但目前的量子滤光单元的膜厚一般为3～6um，而以目前的技术黑色矩阵还不能做到2um以上的水准，因此单纯依靠一层黑色矩阵很难将不同量子滤光单元分割开来，容易出现混色，导致显示不良。
发明内容
本发明的目的在于提供一种彩色滤光单元，能够有效分隔各个量子点滤光单元，提升光线利用率的同时避免混色。
本发明的目的还在于提供一种液晶显示装置，能够有效分隔各个量子点滤光单元，提升光线利用率的同时避免混色。
为实现上述目的，本发明提供一种彩色滤光基板，包括衬底基板、设于所述衬底基板上的阵列排布的多个量子点滤光单元及设于所述衬底基板上的位于各个量子点滤光单元之间的挡墙；
所述挡墙包括设于所述衬底基板上的黑色矩阵层及设于所述黑色矩阵层上的反射层，所述挡墙的厚度大于所述量子点滤光单元的厚度。
所述反射层的反射率大于70％；
所述反射层的厚度为3μm～6μm，且每一微米厚度的反射层的光学密度值均大于1。
所述彩色滤光基板还包括位于各个量子点滤光单元和挡墙上的保护层以及位于各个量子点滤光单元和保护层之间的水氧阻隔层。
所述多个量子点滤光单元包括依次交替排列的红色量子点滤光单元、绿色量子点滤光单元及蓝色量子点滤光单元。
在所述红色量子点滤光单元和衬底基板之间以及绿色量子点滤光单元和衬底基板之间还设有蓝光过滤层。
本发明还提供一种液晶显示装置，包括：背光模组及位于所述背光模组上方的液晶显示面板；
所述液晶显示面板包括：彩色滤光基板、与所述彩色滤光基板相对设置的对置基板及位于所述彩色滤光基板和对置基板之间的液晶层；所述背光模组位于所述对置基板远离所述彩色滤光基板的一侧；
所述彩色滤光基板包括第一衬底基板、设于所述第一衬底基板上的阵列排布的多个量子点滤光单元及设于所述第一衬底基板上的位于各个量子点滤光单元之间的挡墙；
所述挡墙包括设于所述第一衬底基板上的黑色矩阵层及设于所述黑色矩阵层上的反射层，所述挡墙的厚度大于所述量子点滤光单元的厚度。
所述反射层的反射率大于70％；
所述反射层的厚度为3μm～6μm，且每1μm厚度的反射层的光学密度值均大于1。
所述彩色滤光基板还包括位于各个量子点滤光单元和挡墙上的保护层 以及位于各个量子点滤光单元和保护层之间的水氧阻隔层。
所述多个量子点滤光单元包括依次交替排列的红色量子点滤光单元、绿色量子点滤光单元及蓝色量子点滤光单元；
在所述红色量子点滤光单元和衬底基板之间以及绿色量子点滤光单元和衬底基板之间还设有蓝光过滤层。
所述液晶显示装置还包括第一偏光层和第二偏光层；
所述第一偏光层位于所述对置基板与背光模组之间，所述第二偏光层位于彩色滤光基板与液晶层之间。
本发明的有益效果：本发明提供一种彩色滤光基板。所述彩色滤光基板包括衬底基板、设于所述衬底基板上的阵列排布的多个量子点滤光单元及设于所述衬底基板上的位于各个量子点滤光单元之间的挡墙；所述挡墙包括设于所述衬底基板上的黑色矩阵层及设于所述黑色矩阵层上的反射层，所述挡墙的厚度大于所述量子点滤光单元的厚度，所述反射层能够将照射到其表面的光线重新反射到量子点滤光单元中进行二次利用，提升光线利用率的同时避免光线穿越到其他量子点滤光单元中出现混色。本发明还提供一种液晶显示装置，能够有效分隔各个量子点滤光单元，提升光线利用率的同时避免混色。
附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为本发明的彩色滤光基板的结构图；
图2为本发明的液晶显示装置的结构图。
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，本发明提供一种彩色滤光基板，包括衬底基板10、设于所述衬底基板10上的阵列排布的多个量子点滤光单元20及设于所述衬底基板10上位于的各个量子点滤光单元20之间的挡墙30；
所述挡墙30包括设于所述衬底基板10上的黑色矩阵层31及设于所述黑色矩阵层31上的反射层32，所述挡墙30的厚度大于所述量子点滤光单 元20的厚度。
需要说明的是，通过在黑色矩阵层31上叠加反射层32形成挡墙30分隔各个量子点滤光单元20，能够弥补黑色矩阵层31厚度的不足，使得挡墙30的厚度大于所述量子点滤光单元20的厚度，并且通过所述反射层32的设置，能够将照射到其表面的光线重新反射到量子点滤光单元20中进行二次利用，以提升光线的利用率，其中照射到反射层32表面的光线包括量子点滤光单元20激发的光和入射的背光，进一步地，所述反射层32还能够阻挡照射到其表面的光线射入其他的量子点滤光单元20中，避免混色现象，保证显示效果。
为了保证反射层32的反射及挡光效果，本发明设置所述反射层32的反射率大于70％，所述反射层32的厚度为3μm～6μm，且每一微米厚度的反射层32的光学密度值均大于1，从而保证照射到反射层32表面的光线大部分被反射回量子点滤光单元20中，剩余的部分被反射层32吸收，有效避免光线穿越到量子点滤光单元20中，造成混色或者色偏。
具体地，所述彩色滤光基板还包括位于各个量子点滤光单元20和挡墙30上的保护层40以及位于各个量子点滤光单元20和保护层40之间的水氧阻隔层50，所述水氧阻隔层50用于防止所述量子点滤光单元20被水氧渗透，造成器件不良。
具体地，所述多个量子点滤光单元20包括依次交替排列的红色量子点滤光单元R、绿色量子点滤光单元G及蓝色量子点滤光单元B，在所述红色量子点滤光单元R和衬底基板10之间以及绿色量子点滤光单元G和衬底基板10之间还设有蓝光过滤层60，所述红色量子点滤光单元R、绿色量子点滤光单元G及蓝色量子点滤光单元B分别用于在入射的背光的激发下产生红光、绿光及蓝光，所述蓝光过滤层60用于所述红光和绿光进行进一步的过滤，去除其中的蓝光成分，提升色彩纯度。
请参阅图2，本发明还提供一种液晶显示装置，包括：背光模组1及位于所述背光模组1上方的液晶显示面板2；
所述液晶显示面板2包括：彩色滤光基板21、与所述彩色滤光基板21相对设置的对置基板22及位于所述彩色滤光基板21和对置基板22之间的液晶层23；所述背光模组1位于所述对置基板22远离所述彩色滤光基板21的一侧；
所述彩色滤光基板21包括第一衬底基板10、设于所述第一衬底基板10上的阵列排布的多个量子点滤光单元20及设于所述第一衬底基板10上的位于各个量子点滤光单元20之间的挡墙30；
所述挡墙30包括设于所述第一衬底基板10上的黑色矩阵层31及设于所述黑色矩阵层31上的反射层32，所述挡墙30的厚度大于所述量子点滤光单元20的厚度。
需要说明的是，通过在黑色矩阵层31上叠加反射层32形成挡墙30分隔各个量子点滤光单元20，能够弥补黑色矩阵层31厚度的不足，使得挡墙30的厚度大于所述量子点滤光单元20的厚度，并且通过所述反射层32的设置，能够将照射到其表面的光线重新反射到量子点滤光单元20中进行二次利用，以提升光线的利用率，其中照射到反射层32表面的光线包括量子点滤光单元20激发的光和入射的背光，进一步地，所述反射层32还能够阻挡照射到其表面的光线射入其他的量子点滤光单元20中，避免混色现象，保证显示效果。
为了保证反射层32的反射及挡光效果，本发明设置所述反射层32的反射率大于70％，所述反射层32的厚度为3μm～6μm，且每一微米厚度的反射层32的光学密度值均大于1，从而保证照射到反射层32表面的光线大部分被反射回量子点滤光单元20中，剩余的部分被反射层32吸收，有效避免光线穿越到量子点滤光单元20中，造成混色或者色偏。
具体地，所述彩色滤光基板还包括位于各个量子点滤光单元20和挡墙30上的保护层40以及位于各个量子点滤光单元20和保护层40之间的水氧阻隔层50，所述水氧阻隔层50用于防止所述量子点滤光单元20被水氧渗透，造成器件不良。
具体地，所述多个量子点滤光单元20包括依次交替排列的红色量子点滤光单元R、绿色量子点滤光单元G及蓝色量子点滤光单元B，在所述红色量子点滤光单元R和衬底基板10之间以及绿色量子点滤光单元G和衬底基板10之间还设有蓝光过滤层60，所述红色量子点滤光单元R、绿色量子点滤光单元G及蓝色量子点滤光单元B分别用于在入射的背光的激发下产生红光、绿光及蓝光，所述蓝光过滤层60用于所述红光和绿光进行进一步的过滤，去除其中的蓝光成分，提升色彩纯度。
具体地，所述对置基板22为阵列基板，其上形成有薄膜晶体管阵列。
具体地，所述对置基板22与彩色滤光基板21之间还形成有用于支撑所述对置基板22与彩色滤光基板21之间的间隙的隔垫物90，所述隔垫物90包括主隔垫物和高度小于主隔垫物的辅助隔垫物，所述隔垫物90位于所述挡墙30所在的区域的上方。
具体地，由于量子点滤光单元20产生的光线为非偏振光，因此本发明对液晶显示装置的偏光片的位置进行了调整，具体为：所述液晶显示装置 还包括第一偏光层70和第二偏光层80；所述第一偏光层70位于所述对置基板22与背光模组1之间，所述第二偏光层80位于彩色滤光基板21与液晶层23之间，通过将所述第二偏光层80位于彩色滤光基板21与液晶层23之间，以避免量子点滤光单元20产生的光线为非偏振光，无法从偏光层中出射的问题。
具体地，第一偏光层70和第二偏光层80的偏振轴垂直。
优选地，所述第二偏光层80为金属光栅偏振层。
综上所述，本发明提供一种彩色滤光基板。所述彩色滤光基板包括衬底基板、设于所述衬底基板上的阵列排布的多个量子点滤光单元及设于所述衬底基板上的位于各个量子点滤光单元之间的挡墙；所述挡墙包括设于所述衬底基板上的黑色矩阵层及设于所述黑色矩阵层上的反射层，所述挡墙的厚度大于所述量子点滤光单元的厚度，所述反射层能够将照射到其表面的光线重新反射到量子点滤光单元中进行二次利用，提升光线利用率的同时避免光线穿越到其他量子点滤光单元中出现混色。本发明还提供一种液晶显示装置，能够有效分隔各个量子点滤光单元，提升光线利用率的同时避免混色。
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权利要求的保护范围。

Claims (10)

  1. 一种彩色滤光基板，包括衬底基板、设于所述衬底基板上的阵列排布的多个量子点滤光单元及设于所述衬底基板上的位于各个量子点滤光单元之间的挡墙；
    所述挡墙包括设于所述衬底基板上的黑色矩阵层及设于所述黑色矩阵层上的反射层，所述挡墙的厚度大于所述量子点滤光单元的厚度。
  2. 如权利要求1所述的彩色滤光基板，其中，所述反射层的反射率大于70％；
    所述反射层的厚度为3μm～6μm，且每一微米厚度的反射层的光学密度值均大于1。
  3. 如权利要求1所述的彩色滤光基板，还包括位于各个量子点滤光单元和挡墙上的保护层以及位于各个量子点滤光单元和保护层之间的水氧阻隔层。
  4. 如权利要求1所述的彩色滤光基板，其中，所述多个量子点滤光单元包括依次交替排列的红色量子点滤光单元、绿色量子点滤光单元及蓝色量子点滤光单元。
  5. 如权利要求1所述的彩色滤光基板，其中，在所述红色量子点滤光单元和衬底基板之间以及绿色量子点滤光单元和衬底基板之间还设有蓝光过滤层。
  6. 一种液晶显示装置，包括：背光模组及位于所述背光模组上方的液晶显示面板；
    所述液晶显示面板包括：彩色滤光基板、与所述彩色滤光基板相对设置的对置基板及位于所述彩色滤光基板和对置基板之间的液晶层；所述背光模组位于所述对置基板远离所述彩色滤光基板的一侧；
    所述彩色滤光基板包括第一衬底基板、设于所述第一衬底基板上的阵列排布的多个量子点滤光单元及设于所述第一衬底基板上位于各个量子点滤光单元之间的挡墙；
    所述挡墙包括设于所述第一衬底基板上的黑色矩阵层及设于所述黑色矩阵层上的反射层，所述挡墙的厚度大于所述量子点滤光单元的厚度。
  7. 如权利要求6所述的液晶显示装置，其中，所述反射层的反射率大于70％；
    所述反射层的厚度为3μm～6μm，且每一微米厚度的反射层的光学密 度值均大于1。
  8. 如权利要求6所述的液晶显示装置，其中，所述彩色滤光基板还包括位于各个量子点滤光单元和挡墙上的保护层以及位于各个量子点滤光单元和保护层之间的水氧阻隔层。
  9. 如权利要求6所述的液晶显示装置，其中，所述多个量子点滤光单元包括依次交替排列的红色量子点滤光单元、绿色量子点滤光单元及蓝色量子点滤光单元；
    在所述红色量子点滤光单元和衬底基板之间以及绿色量子点滤光单元和衬底基板之间还设有蓝光过滤层。
  10. 如权利要求6所述的液晶显示装置，还包括第一偏光层和第二偏光层；
    所述第一偏光层位于所述对置基板与背光模组之间，所述第二偏光层位于彩色滤光基板与液晶层之间。
PCT/CN2018/116283 2018-10-25 2018-11-19 彩色滤光基板及液晶显示装置 WO2020082473A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/335,253 US20200133053A1 (en) 2018-10-25 2018-11-19 Color filter substrate and liquid crystal display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811253620.0A CN109375410A (zh) 2018-10-25 2018-10-25 彩色滤光基板及液晶显示装置
CN201811253620.0 2018-10-25

Publications (1)

Publication Number Publication Date
WO2020082473A1 true WO2020082473A1 (zh) 2020-04-30

Family

ID=65402097

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/116283 WO2020082473A1 (zh) 2018-10-25 2018-11-19 彩色滤光基板及液晶显示装置

Country Status (2)

Country Link
CN (1) CN109375410A (zh)
WO (1) WO2020082473A1 (zh)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110007508A (zh) * 2019-04-30 2019-07-12 深圳市华星光电技术有限公司 彩膜基板、液晶显示面板及液晶显示装置
CN110161743B (zh) * 2019-05-17 2021-08-10 京东方科技集团股份有限公司 一种基板及其制备方法、液晶显示面板及液晶显示装置
CN110109294A (zh) * 2019-05-24 2019-08-09 京东方科技集团股份有限公司 一种液晶显示面板、制作方法和显示装置
CN110196516A (zh) * 2019-06-25 2019-09-03 深圳市华星光电半导体显示技术有限公司 一种显示面板及其显示装置
CN112310300A (zh) * 2019-07-23 2021-02-02 群创光电股份有限公司 发光装置以及制作发光装置的方法
CN110646980B (zh) * 2019-09-29 2022-07-29 京东方科技集团股份有限公司 一种液晶显示器
CN110962427A (zh) * 2019-11-25 2020-04-07 Tcl华星光电技术有限公司 量子点膜
CN110970546B (zh) * 2019-12-19 2021-10-15 京东方科技集团股份有限公司 显示基板及其制作方法、拼接显示装置
CN111416048B (zh) * 2020-04-02 2022-09-09 京东方科技集团股份有限公司 显示装置、显示装置的盖板的制作方法
CN111338124A (zh) * 2020-04-13 2020-06-26 武汉华星光电技术有限公司 一种量子点显示面板、量子点显示装置及其制备方法
CN114846395B (zh) * 2020-12-02 2024-06-07 京东方科技集团股份有限公司 彩膜基板及其制造方法、显示面板、显示装置
CN114690470A (zh) * 2020-12-28 2022-07-01 上海仪电显示材料有限公司 彩色滤光基板及其制作方法、液晶显示装置
CN113659058B (zh) * 2021-08-20 2023-10-20 京东方科技集团股份有限公司 一种发光器件及其制备方法、显示装置
US11971623B2 (en) 2021-12-14 2024-04-30 Huizhou China Star Optoelectronics Display Co., Ltd. Display screen, display device and method for manufacturing display screen
CN114242874A (zh) * 2021-12-14 2022-03-25 惠州华星光电显示有限公司 显示屏、显示装置及显示屏的制作方法
CN114488603A (zh) * 2022-02-21 2022-05-13 深圳市华星光电半导体显示技术有限公司 量子点彩膜基板及其制备方法、显示面板

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110176328A1 (en) * 2008-07-28 2011-07-21 Munisamy Anandan UV LED Based color pixel backlight incorporating quantum dots for increasing color gamut of LCD
US20130242228A1 (en) * 2012-03-15 2013-09-19 Samsung Display Co., Ltd. Liquid crystal display and manufacturing method thereof
CN105242448A (zh) * 2015-11-11 2016-01-13 深圳市华星光电技术有限公司 彩色滤光基板的制作方法及彩色滤光基板
CN105259696A (zh) * 2015-11-16 2016-01-20 深圳市华星光电技术有限公司 彩色滤光基板的制作方法
CN105717723A (zh) * 2016-04-20 2016-06-29 深圳市华星光电技术有限公司 蓝相液晶显示装置及其制作方法
CN105929590A (zh) * 2016-07-08 2016-09-07 京东方科技集团股份有限公司 显示基板、显示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110176328A1 (en) * 2008-07-28 2011-07-21 Munisamy Anandan UV LED Based color pixel backlight incorporating quantum dots for increasing color gamut of LCD
US20130242228A1 (en) * 2012-03-15 2013-09-19 Samsung Display Co., Ltd. Liquid crystal display and manufacturing method thereof
CN105242448A (zh) * 2015-11-11 2016-01-13 深圳市华星光电技术有限公司 彩色滤光基板的制作方法及彩色滤光基板
CN105259696A (zh) * 2015-11-16 2016-01-20 深圳市华星光电技术有限公司 彩色滤光基板的制作方法
CN105717723A (zh) * 2016-04-20 2016-06-29 深圳市华星光电技术有限公司 蓝相液晶显示装置及其制作方法
CN105929590A (zh) * 2016-07-08 2016-09-07 京东方科技集团股份有限公司 显示基板、显示装置

Also Published As

Publication number Publication date
CN109375410A (zh) 2019-02-22

Similar Documents

Publication Publication Date Title
WO2020082473A1 (zh) 彩色滤光基板及液晶显示装置
US20200133053A1 (en) Color filter substrate and liquid crystal display device
US11175537B2 (en) Display device
CN107153297B (zh) 显示面板及显示设备
CN110764291B (zh) 可实现视角切换的显示装置及其显示方法、制作方法
US20170261807A1 (en) Polarizer sheet, liquid crystal display device and fabricating method of polarizer sheet
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
US10989953B2 (en) Display panel, manufacturing method thereof, and display device
JP2007139904A (ja) 表示素子及びこれを備えた表示装置
WO2020168669A1 (zh) 量子点液晶显示器
JP2013235141A (ja) カラー液晶表示装置
WO2019227669A1 (zh) 显示面板及显示装置
WO2022007154A1 (zh) 一种液晶显示面板
US20240103315A1 (en) Display panel and manufacture method thereof, display apparatus
WO2018064855A1 (zh) 圆偏光片、液晶显示器和电子装置
WO2020155279A1 (zh) 光学膜层和显示装置
KR20020073278A (ko) 디스플레이장치
WO2023208144A1 (zh) 液晶显示面板以及显示装置
WO2013031361A1 (ja) 液晶表示パネルおよび液晶表示装置
KR20120133085A (ko) 디스플레이 장치용 광학필름, 그 제조방법 및 이를 구비하는 디스플레이 장치
CN110609411A (zh) 液晶显示面板和显示装置
JP2013186171A (ja) 液晶表示装置
WO2024026925A1 (zh) 一种液晶显示面板
WO2023028828A1 (zh) 光学叠层结构、显示模组、终端及相关制备方法
US11886072B2 (en) Color filter substrate, array substrate, and display panel

Legal Events

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

Ref document number: 18937615

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: 18937615

Country of ref document: EP

Kind code of ref document: A1