WO2020062418A1 - Coa上基板、显示面板以及显示装置 - Google Patents

Coa上基板、显示面板以及显示装置 Download PDF

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Publication number
WO2020062418A1
WO2020062418A1 PCT/CN2018/113283 CN2018113283W WO2020062418A1 WO 2020062418 A1 WO2020062418 A1 WO 2020062418A1 CN 2018113283 W CN2018113283 W CN 2018113283W WO 2020062418 A1 WO2020062418 A1 WO 2020062418A1
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Prior art keywords
transparent
light
substrate
coa
intermediate layer
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PCT/CN2018/113283
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English (en)
French (fr)
Inventor
查宝
李吉
陈孝贤
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深圳市华星光电技术有限公司
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Publication of WO2020062418A1 publication Critical patent/WO2020062418A1/zh

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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509Filters, e.g. light shielding masks
    • G02F1/133512Light shielding layers, e.g. black matrix
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1343Electrodes
    • G02F1/134309Electrodes characterised by their geometrical arrangement

Definitions

  • the present application relates to the field of liquid crystal display technology, and in particular, to a COA substrate, a display panel, and a display device.
  • liquid crystal displays are mainly divided into COA (Color Filter On Array) technology and Non-COA technology.
  • COA is a color filter layer that is coated on a completed array (Array) to improve the traditional color filter.
  • Array completed array
  • the upper substrate of the COA display panel based on light alignment includes a transparent substrate (such as a glass substrate), a black matrix layer BM, and a transparent electrode layer ITO as a common electrode, and a black matrix layer.
  • BM is formed on the transparent substrate
  • the transparent electrode layer ITO is formed on the black matrix layer BM and the exposed area of the transparent substrate (the area where the BM is not provided).
  • the conventional display panel has a technical problem that the contact position between the ITO and the glass substrate reflects light.
  • the present application provides a COA upper substrate, a display panel, and a display device to alleviate the technical problem of light reflection at the contact position between the ITO and the glass substrate in the existing display panel.
  • An embodiment of the present application provides a COA substrate, which includes:
  • a black matrix layer disposed on the transparent substrate
  • a transparent intermediate layer disposed on an exposed area of the transparent substrate
  • a transparent electrode layer disposed on the black matrix layer and the transparent intermediate layer
  • the light refractive index of the transparent intermediate layer is between the light refractive index of the transparent substrate and the light refractive index of the transparent electrode layer.
  • the thickness of the transparent intermediate layer is equal to the thickness of the black matrix layer.
  • optical nanoparticles are added in the transparent intermediate layer.
  • the light nanoparticles include at least one of a first light nanoparticle for absorbing yellow-orange light and a second light nanoparticle for cyan-green light.
  • the light nanoparticles include a rhodamine-based derivative.
  • the light nanoparticles include a mixed system of metal nanoparticles and rhodamine-based derivative dyes.
  • the transparent intermediate layer includes at least two transparent material layers.
  • the light refractive index of each transparent material layer increases in the direction from the transparent substrate to the transparent electrode layer.
  • a material of the transparent intermediate layer is a transparent resin.
  • the transparent resin includes poly (1,2-butadiene), poly (2-vinyltetrahydrofuran), poly (2-vinylthiophene), polycarbonate, and polyester resin. At least one of polyethylene, polystyrene, polystyrene-benzonitrile, polyurethane, and polyvinyl chloride.
  • An embodiment of the present application provides a display panel including a TFT lower substrate and a COA upper substrate corresponding to the TFT lower substrate.
  • the COA upper substrate includes:
  • a black matrix layer disposed on the transparent substrate
  • a transparent intermediate layer disposed on an exposed area of the transparent substrate
  • a transparent electrode layer disposed on the black matrix layer and the transparent intermediate layer
  • the light refractive index of the transparent intermediate layer is between the light refractive index of the transparent substrate and the light refractive index of the transparent electrode layer.
  • the thickness of the transparent intermediate layer is equal to the thickness of the black matrix layer.
  • light nanoparticles are added in the transparent intermediate layer.
  • the light nanoparticles include at least one of a first light nanoparticle for absorbing yellow-orange light and a second light nanoparticle for cyan-green light.
  • the light nanoparticles include a rhodamine-based derivative.
  • the light nanoparticles include a mixed system of metal nanoparticles and rhodamine-based derivative dyes.
  • the transparent intermediate layer includes at least two transparent material layers.
  • a material of the transparent intermediate layer is a transparent resin.
  • the transparent resin includes poly (1,2-butadiene), poly (2-vinyltetrahydrofuran), poly (2-vinylthiophene), polycarbonate, polyester resin, At least one of polyethylene, polystyrene, polystyrene-benzonitrile, polyurethane, and polyvinyl chloride.
  • An embodiment of the present application provides a display device including a display panel provided by an embodiment of the present application.
  • the present application provides a new COA upper substrate, a display panel, and a display device.
  • the COA upper substrate includes: a transparent substrate; a black matrix layer disposed on the transparent substrate; and a transparent intermediate layer disposed on the transparent substrate.
  • a transparent electrode layer is disposed on the black matrix layer and the transparent intermediate layer; the light refractive index of the transparent intermediate layer is between the light refractive index of the transparent substrate and the light of the transparent electrode layer.
  • FIG. 1 is a schematic structural diagram of an existing display panel
  • FIG. 2 is a first schematic structural diagram of a substrate on a COA according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of a second structure of a substrate on a COA according to an embodiment of the present application
  • FIG. 4 is a third schematic structural diagram of a substrate on a COA according to an embodiment of the present application.
  • FIG. 5 is a first schematic structural diagram of a display panel according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a second structure of a display panel according to an embodiment of the present application.
  • FIG. 7 is a third structural diagram of a display panel provided by an embodiment of the present application.
  • the present application addresses the technical problem that the contact position of the ITO and the glass substrate in the existing display panel reflects light; the embodiments of the present application can solve this defect.
  • the COA upper substrate 22 provided in this application includes:
  • a black matrix layer 222 is disposed on the transparent substrate 221;
  • the transparent intermediate layer 223 is disposed on an exposed area of the transparent substrate 221;
  • a transparent electrode layer 224 disposed on the black matrix layer 222 and the transparent intermediate layer 223;
  • the light refractive index of the transparent intermediate layer 223 is between the light refractive index of the transparent substrate 221 and the light refractive index of the transparent electrode layer 224.
  • the refractive index n of the transparent substrate that is, the glass substrate
  • the refractive index of the transparent electrode layer that is, indium tin oxide, ITO
  • the material of the transparent intermediate layer is transparent resin and transparent.
  • the refractive index of the resin is between glass and ITO.
  • This embodiment provides a new COA upper substrate, which includes: a transparent substrate; a black matrix layer disposed on the transparent substrate; a transparent intermediate layer disposed on an exposed area of the transparent substrate; a transparent electrode layer, disposed On the black matrix layer and the transparent intermediate layer; the light refractive index of the transparent intermediate layer is between the light refractive index of the transparent substrate and the light refractive index of the transparent electrode layer; thus avoiding
  • the direct contact between ITO and the glass substrate can well reduce the reflectance of light from the ITO, and alleviates the technical problem of light reflection at the contact position between the ITO and the glass substrate in the existing display panel.
  • the transparent electrode layer 224 is uneven.
  • the thickness of the transparent intermediate layer 223 is equal to or slightly smaller than that of the transparent intermediate layer 223.
  • the thickness of the black matrix layer 222 is described so as to maintain flatness and improve contrast.
  • the film thickness of the black matrix layer 222 is lum to 3 um, and the transparent intermediate layer 223 may be lum to 3 um.
  • the light path system When the display device is working, the light path system will generate various stray light, such as yellow orange light or cyan light.
  • stray light such as yellow orange light or cyan light.
  • Light nanoparticles 225 are added in the transparent intermediate layer.
  • the light nanoparticles include at least one of a first light nanoparticle for absorbing yellow-orange light and a second light nanoparticle for cyan-green light.
  • the light nanoparticles include rhodamine-based derivatives.
  • the light nanoparticles include a mixed system of metal nanoparticles and rhodamine-based derivative dyes.
  • the transparent intermediate layer includes at least two transparent material layers, and the light refractive index of each transparent material layer increases in the direction from the transparent substrate to the transparent electrode layer.
  • the transparent intermediate layer 223 includes two transparent material layers, namely a first transparent material layer 2231 and a second transparent material layer 2232.
  • the embodiment of the present application also provides a method for manufacturing a substrate on a COA, which includes the following steps:
  • a light-shielding material is coated on a transparent substrate and processed to form a black matrix layer 222.
  • a light-shielding material is coated on a transparent substrate 221 formed of a glass substrate, and then a pattern corresponding to the black matrix layer 222 is formed through exposure, development, and peeling processes.
  • a transparent resin doped with light nanoparticles is deposited on the exposed areas of the black matrix layer 222 and the transparent substrate 221, and processed to form a transparent intermediate layer 223.
  • a transparent resin doped with light nanoparticles is deposited on the exposed areas of the black matrix layer 222 and the transparent substrate 221, and then a transparent intermediate layer 223 is formed through exposure, development, and peeling processes. Corresponding pattern.
  • the black matrix layer 222 and the transparent intermediate layer 223 are coated with a transparent conductive material, and processed to form a transparent electrode layer 224.
  • a layer of ITO transparent conductive material is coated on the black matrix layer 222 and the transparent intermediate layer 223, and a pattern corresponding to the transparent electrode layer 224 is formed through exposure, development, and peeling processes.
  • the embodiment of the present application further provides a method for manufacturing a substrate on a COA, including the following steps:
  • a transparent resin doped with light nanoparticles is deposited on a transparent substrate and processed to form a transparent intermediate layer 223.
  • a transparent resin doped with light nanoparticles is deposited on a transparent substrate 221 formed on a glass substrate, and then a pattern corresponding to the transparent intermediate layer 223 is formed through exposure, development, and baking processes. .
  • a light-shielding material is coated on the exposed area of the transparent substrate 221 and processed to form a black matrix layer 222.
  • a light-shielding material is coated on a transparent substrate 221 formed of a glass substrate, and then a pattern corresponding to the black matrix layer 222 is formed through exposure, development, and baking processes.
  • the black matrix layer 222 and the transparent intermediate layer 223 are coated with a transparent conductive material, and processed to form a transparent electrode layer 224.
  • a layer of ITO transparent conductive material is coated on the black matrix layer 222 and the transparent intermediate layer 223, and a pattern corresponding to the transparent electrode layer 224 is formed through exposure, development, and baking processes .
  • the display panel provided in this application includes a TFT lower substrate 21 and a COA upper substrate 22 corresponding to the TFT lower substrate 21;
  • the COA upper substrate 22 includes:
  • a black matrix layer 222 is disposed on the transparent substrate 221;
  • the transparent intermediate layer 223 is disposed on an exposed area of the transparent substrate 221;
  • a transparent electrode layer 224 disposed on the black matrix layer 222 and the transparent intermediate layer 223;
  • the light refractive index of the transparent intermediate layer 223 is between the light refractive index of the transparent substrate 221 and the light refractive index of the transparent electrode layer 224.
  • the refractive index n of the transparent substrate that is, the glass substrate
  • the refractive index of the transparent electrode layer that is, indium tin oxide, ITO
  • the refractive index of the resin is between glass and ITO.
  • the internal COA upper substrate includes: a transparent substrate; a black matrix layer disposed on the transparent substrate; a transparent intermediate layer disposed on an exposed area of the transparent substrate; transparent An electrode layer disposed on the black matrix layer and the transparent intermediate layer; a light refractive index of the transparent intermediate layer is between a light refractive index of the transparent substrate and a light refractive index of the transparent electrode layer; In this way, direct contact between the ITO and the glass substrate is avoided, and the reflectivity of the light out of the ITO can be well reduced, and the technical problem of light reflection at the contact position between the ITO and the glass substrate in the existing display panel is alleviated.
  • the transparent electrode layer 224 is uneven.
  • the thickness of the transparent intermediate layer 223 is equal to or slightly less than The thickness of the black matrix layer 222 is described so as to maintain flatness and improve contrast.
  • the film thickness of the black matrix layer 222 is lum to 3 um, and the transparent intermediate layer 223 may be lum to 3 um.
  • the light path system will generate various stray light, such as yellow orange light or cyan light.
  • Light nanoparticles 225 are added in the transparent intermediate layer.
  • the light nanoparticles include at least one of a first light nanoparticle for absorbing yellow-orange light and a second light nanoparticle for cyan-green light.
  • the light nanoparticles include rhodamine-based derivatives.
  • the light nanoparticles include a mixed system of metal nanoparticles and rhodamine-based derivative dyes.
  • the transparent intermediate layer includes at least two transparent material layers, and the light refractive index of each transparent material layer increases in the direction from the transparent substrate to the transparent electrode layer.
  • the transparent intermediate layer 223 includes two transparent material layers, that is, a first transparent material layer 2231 and a second transparent material layer 2232.
  • the present application also provides a display device, which includes a display panel provided by an embodiment of the present application.
  • the present application provides a new COA upper substrate, a display panel, and a display device.
  • the inner COA upper substrate includes: a transparent substrate; a black matrix layer disposed on the transparent substrate; and a transparent intermediate layer disposed on the transparent substrate.
  • a transparent electrode layer disposed on the black matrix layer and the transparent intermediate layer; the light refractive index of the transparent intermediate layer is between the light refractive index of the transparent substrate and the transparent electrode layer.

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Abstract

本申请提供一种COA上基板、显示面板以及显示装置,其COA上基板包括透明基板,黑色矩阵层,透明中间层,透明电极层,透明中间层的光折射率介于所述透明基板的光折射率和所述透明电极层的光折射率之间;透明中间层避免了ITO与玻璃基板直接接触,缓解了现有显示面板存在ITO与玻璃基板的接触位置反光的技术问题。

Description

COA上基板、显示面板以及显示装置 技术领域
本申请涉及液晶显示技术领域,尤其涉及一种COA上基板、显示面板以及显示装置。
背景技术
目前液晶显示器主要有COA (Color Filter On Array)技术和Non-COA技术之分,COA是将彩色光阻涂布于已完成的阵列(Array)上形成彩色滤光层,可以改善传统彩色滤光片开口率低的问题。
如图1所示,基于光配向的COA显示面板的上基板(即COA上基板)包括:透明基板(如玻璃基板)、黑色矩阵层BM、以及作为公共电极的透明电极层ITO,黑色矩阵层BM形成于透明基板上,透明电极层ITO形成于黑色矩阵层BM和透明基板的裸露区域(没有设置BM的区域)上,在ITO与玻璃基板的接触位置,由于两者对光线的折射率相差较大(玻璃基板的折射率n=1.50,ITO的折射率n=1.80),ITO会反光,对液晶显示器的光透过率以及对比度都会有一定的影响。
即现有显示面板存在ITO与玻璃基板的接触位置会反光的技术问题。
技术问题
本申请提供一种COA上基板、显示面板以及显示装置,以缓解现有显示面板存在的ITO与玻璃基板的接触位置反光的技术问题。
技术解决方案
为解决上述问题,本申请提供的技术方案如下:
本申请实施例提供了一种COA上基板,其包括:
透明基板;
黑色矩阵层,设置在所述透明基板上;
透明中间层,设置在所述透明基板的裸露区域上;
透明电极层,设置在所述黑色矩阵层以及所述透明中间层上;
其中,所述透明中间层的光折射率介于所述透明基板的光折射率和所述透明电极层的光折射率之间。
在本申请的COA上基板中,所述透明中间层的厚度等于所述黑色矩阵层的厚度。
在本申请的COA上基板中,所述透明中间层内添加有光纳米粒子。
在本申请的COA上基板中,所述光纳米粒子包括用于吸收黄橙光的第一光纳米粒子、以及用于吸收青绿光的第二光纳米粒子中的至少一种。
在本申请的COA上基板中,所述光纳米粒子包括罗丹明类衍生物。
在本申请的COA上基板中,所述光纳米粒子包括金属纳米颗粒-罗丹明类衍生物染料的混合体系。
在本申请的COA上基板中,所述透明中间层包括至少两层透明材料层。
在本申请的COA上基板中,在从透明基板到透明电极层的方向上,各透明材料层的光折射率递增。
在本申请的COA上基板中,所述透明中间层的材料为透明树脂。
在本申请的COA上基板中,所述透明树脂包括聚(1,2-丁二烯)、聚(2-乙烯基四氢呋喃)、聚(2-乙烯基噻吩)、聚碳酸酯、聚酯树脂、聚乙烯、聚苯乙烯、聚苯乙烯-苯烯腈、聚亚安酯、聚氯乙烯中的至少一种。
本申请实施例提供了一种显示面板,其包括:TFT下基板、以及与所述TFT下基板对应设置的COA上基板;所述COA上基板包括:
透明基板;
黑色矩阵层,设置在所述透明基板上;
透明中间层,设置在所述透明基板的裸露区域上;
透明电极层,设置在所述黑色矩阵层以及所述透明中间层上;
其中,所述透明中间层的光折射率介于所述透明基板的光折射率和所述透明电极层的光折射率之间。
在本申请的显示面板中,所述透明中间层的厚度等于所述黑色矩阵层的厚度。
在本申请的显示面板中,所述透明中间层内添加有光纳米粒子。
在本申请的显示面板中,所述光纳米粒子包括用于吸收黄橙光的第一光纳米粒子、以及用于吸收青绿光的第二光纳米粒子中的至少一种。
在本申请的显示面板中,所述光纳米粒子包括罗丹明类衍生物。
在本申请的显示面板中,所述光纳米粒子包括金属纳米颗粒-罗丹明类衍生物染料的混合体系。
在本申请的显示面板中,所述透明中间层包括至少两层透明材料层。
在本申请的显示面板中,所述透明中间层的材料为透明树脂。
在本申请的显示面板中,所述透明树脂包括聚(1,2-丁二烯)、聚(2-乙烯基四氢呋喃)、聚(2-乙烯基噻吩)、聚碳酸酯、聚酯树脂、聚乙烯、聚苯乙烯、聚苯乙烯-苯烯腈、聚亚安酯、聚氯乙烯中的至少一种。
本申请实施例提供了一种显示装置,其包括本申请实施例提供的显示面板。
有益效果
本申请通过提供一种新的COA上基板、显示面板以及显示装置,其COA上基板包括:透明基板;黑色矩阵层,设置在所述透明基板上;透明中间层,设置在所述透明基板的裸露区域上;透明电极层,设置在所述黑色矩阵层以及所述透明中间层上;所述透明中间层的光折射率介于所述透明基板的光折射率和所述透明电极层的光折射率之间;这样就避免了ITO与玻璃基板直接接触,可以很好的降低光线在ITO出的反射率,缓解了现有显示面板存在ITO与玻璃基板的接触位置反光的技术问题。
附图说明
为了更清楚地说明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单介绍,显而易见地,下面描述中的附图仅仅是发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为现有显示面板的结构示意图
图2为本申请实施例提供的COA上基板的第一种结构示意图;
图3为本申请实施例提供的COA上基板的第二种结构示意图;
图4为本申请实施例提供的COA上基板的第三种结构示意图;
图5为本申请实施例提供的显示面板的第一种结构示意图;
图6为本申请实施例提供的显示面板的第二种结构示意图;
图7为本申请实施例提供的显示面板的第三种结构示意图。
本发明的实施方式
以下各实施例的说明是参考附加的图示,用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语,例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等,仅是参考附加图式的方向。因此,使用的方向用语是用以说明及理解本申请,而非用以限制本申请。在图中,结构相似的单元是用以相同标号表示。
本申请针对现有显示面板存在的ITO与玻璃基板的接触位置会反光的技术问题;本申请实施例能够解决该缺陷。
如图2所示,本申请提供的COA上基板22包括:
透明基板221;
黑色矩阵层222,设置在所述透明基板221上;
透明中间层223,设置在所述透明基板221的裸露区域上;
透明电极层224,设置在所述黑色矩阵层222以及所述透明中间层上223;
其中,所述透明中间层223的光折射率介于所述透明基板221的光折射率和所述透明电极层224的光折射率之间。
在一种实施例中,透明基板,即玻璃基板的折射率n=1.50,透明电极层,即氧化铟锡ITO的折射率n=1.80,为了降低成本,透明中间层的材料为透明树脂,透明树脂的折射率介于玻璃和ITO之间。
在一种实施例中,所述透明树脂包括聚(1,2-丁二烯)(其折射率n=1.51)、聚(2-乙烯基四氢呋喃)(其折射率n=1.55)、聚(2-乙烯基噻吩)(n=其折射率1.6376)、聚碳酸酯(n=其折射率1.60)、聚酯树脂(其折射率n=1.523~1.54)、聚乙烯(其折射率n=1.50~1.54)、聚苯乙烯(其折射率n=1.6)、聚苯乙烯-苯烯腈(其折射率n=1.56~1.57)、聚亚安酯(其折射率n=1.50~1.60)、聚氯乙烯(其折射率n=1.54)中的一种或多种的混合物。
本实施例提供一种新的COA上基板,其包括:透明基板;黑色矩阵层,设置在所述透明基板上;透明中间层,设置在所述透明基板的裸露区域上;透明电极层,设置在所述黑色矩阵层以及所述透明中间层上;所述透明中间层的光折射率介于所述透明基板的光折射率和所述透明电极层的光折射率之间;这样就避免了ITO与玻璃基板直接接触,可以很好的降低光线在ITO出的反射率,缓解了现有显示面板存在ITO与玻璃基板的接触位置反光的技术问题。
在图1所示的现有显示装置中,透明电极层224不平坦,为了增强COA上基板的平坦性,提升对比度;如图2所示,所述透明中间层223的厚度等于或者略小于所述黑色矩阵层222的厚度,这样可以保持平坦性,提升对比度。一般情况下,黑色矩阵层222的膜厚为lum 至3um,透明中间层223可以为lum 至3um。
在显示装置工作时,光路系统将产生各种各样的杂光,如黄橙光或青绿光,为了吸收光路系统中的黄橙光或青绿光,进而提升色域,如图3所示,所述透明中间层内添加有光纳米粒子225。
在一种实施例中,所述光纳米粒子包括用于吸收黄橙光的第一光纳米粒子、以及用于吸收青绿光的第二光纳米粒子中的至少一种。
在一种实施例中,所述光纳米粒子包括罗丹明类衍生物。
在一种实施例中,所述光纳米粒子包括金属纳米颗粒-罗丹明类衍生物染料的混合体系。
在一种实施例中,为了进一步降低反射,所述透明中间层包括至少两层透明材料层,在从透明基板到透明电极层的方向上,各透明材料层的光折射率递增。
如图4所示,透明中间层223包括两层透明材料层,即第一透明材料层2231和第二透明材料层2232,此时,第一透明材料层2231包括聚乙烯(其折射率n=1.50~1.54)、聚(1,2-丁二烯)(其折射率n=1.51)、聚亚安酯(其折射率n=1.50~1.60)、聚酯树脂(其折射率n=1.523~1.54)、聚氯乙烯(其折射率n=1.54)、聚(2-乙烯基四氢呋喃)(其折射率n=1.55)、以及聚苯乙烯-苯烯腈(其折射率n=1.56~1.57)中的一种或多种的混合物,第二透明材料层2232包括聚碳酸酯(n=其折射率1.60)、聚苯乙烯(其折射率n=1.6)、聚(2-乙烯基噻吩)(n=其折射率1.6376)中的一种或多种的混合物。
在一种实施例中,本申请实施例同时提供了一种用于COA上基板的制作方法,包括以下的几个步骤:
首先,在透明基板上涂覆遮光材料,并经处理形成黑色矩阵层222。
在一种实施例中,如图3所示,在玻璃基板形成的透明基板221上涂覆遮光材料,然后经曝光、显影和剥离处理形成黑色矩阵层222对应的图案。
接着,在黑色矩阵层222和透明基板221的裸露区域上沉积掺杂有光纳米粒子的透明树脂,并经处理形成透明中间层223。
在一种实施例中,如图3所示,在黑色矩阵层222和透明基板221的裸露区域上沉积掺杂有光纳米粒子的透明树脂,然后经曝光、显影和剥离处理形成透明中间层223对应的图案。
接着,在黑色矩阵层222和透明中间层223上涂敷透明导电材料,并经处理形成透明电极层224。
在一种实施例中,如图3所示,在黑色矩阵层222和透明中间层223上涂敷一层ITO透明导电材料,并经曝光、显影和剥离处理形成透明电极层224对应的图案。
本申请实施例还提供了一种用于COA上基板的制作方法,包括以下的几个步骤:
首先,在透明基板上沉积掺杂有光纳米粒子的透明树脂,并经处理形成透明中间层223。
在一种实施例中,如图3所示,在玻璃基板形成的透明基板221上沉积掺杂有光纳米粒子的透明树脂,然后经曝光、显影和烘烤处理形成透明中间层223对应的图案。
接着,在透明基板221的裸露区域上涂覆遮光材料,并经处理形成黑色矩阵层222。
在一种实施例中,如图3所示,在玻璃基板形成的透明基板221上涂覆遮光材料,然后经曝光、显影和烘烤处理形成黑色矩阵层222对应的图案。
接着,在黑色矩阵层222和透明中间层223上涂敷透明导电材料,并经处理形成透明电极层224。
在一种实施例中,如图3所示,在黑色矩阵层222和透明中间层223上涂敷一层ITO透明导电材料,并经曝光、显影和烘烤处理形成透明电极层224对应的图案。
如图5所示,本申请提供的显示面板包括TFT下基板21、以及与所述TFT下基板21对应设置的COA上基板22;所述COA上基板22包括:
透明基板221;
黑色矩阵层222,设置在所述透明基板221上;
透明中间层223,设置在所述透明基板221的裸露区域上;
透明电极层224,设置在所述黑色矩阵层222以及所述透明中间层上223;
其中,所述透明中间层223的光折射率介于所述透明基板221的光折射率和所述透明电极层224的光折射率之间。
在一种实施例中,透明基板,即玻璃基板的折射率n=1.50,透明电极层,即氧化铟锡ITO的折射率n=1.80,为了降低成本,透明中间层的材料为透明树脂,透明树脂的折射率介于玻璃和ITO之间。
在一种实施例中,所述透明树脂包括聚(1,2-丁二烯)(其折射率n=1.51)、聚(2-乙烯基四氢呋喃)(其折射率n=1.55)、聚(2-乙烯基噻吩)(n=其折射率1.6376)、聚碳酸酯(n=其折射率1.60)、聚酯树脂(其折射率n=1.523~1.54)、聚乙烯(其折射率n=1.50~1.54)、聚苯乙烯(其折射率n=1.6)、聚苯乙烯-苯烯腈(其折射率n=1.56~1.57)、聚亚安酯(其折射率n=1.50~1.60)、聚氯乙烯(其折射率n=1.54)中的一种或多种的混合物。
本实施例提供一种新的显示面板,其内部的COA上基板包括:透明基板;黑色矩阵层,设置在所述透明基板上;透明中间层,设置在所述透明基板的裸露区域上;透明电极层,设置在所述黑色矩阵层以及所述透明中间层上;所述透明中间层的光折射率介于所述透明基板的光折射率和所述透明电极层的光折射率之间;这样就避免了ITO与玻璃基板直接接触,可以很好的降低光线在ITO出的反射率,缓解了现有显示面板存在ITO与玻璃基板的接触位置反光的技术问题。
在图1所示的现有显示装置中,透明电极层224不平坦,为了增强COA上基板的平坦性,提升对比度;如图5所示,所述透明中间层223的厚度等于或者略小于所述黑色矩阵层222的厚度,这样可以保持平坦性,提升对比度。一般情况下,黑色矩阵层222的膜厚为lum 至3um,透明中间层223可以为lum 至3um。
在显示装置工作时,光路系统将产生各种各样的杂光,如黄橙光或青绿光,为了吸收光路系统中的黄橙光或青绿光,进而提升色域,如图6所示,所述透明中间层内添加有光纳米粒子225。
在一种实施例中,所述光纳米粒子包括用于吸收黄橙光的第一光纳米粒子、以及用于吸收青绿光的第二光纳米粒子中的至少一种。
在一种实施例中,所述光纳米粒子包括罗丹明类衍生物。
在一种实施例中,所述光纳米粒子包括金属纳米颗粒-罗丹明类衍生物染料的混合体系。
在一种实施例中,为了进一步降低反射,所述透明中间层包括至少两层透明材料层,在从透明基板到透明电极层的方向上,各透明材料层的光折射率递增。
如图7所示,透明中间层223包括两层透明材料层,即第一透明材料层2231和第二透明材料层2232,此时,第一透明材料层2231包括聚乙烯(其折射率n=1.50~1.54)、聚(1,2-丁二烯)(其折射率n=1.51)、聚亚安酯(其折射率n=1.50~1.60)、聚酯树脂(其折射率n=1.523~1.54)、聚氯乙烯(其折射率n=1.54)、聚(2-乙烯基四氢呋喃)(其折射率n=1.55)、以及聚苯乙烯-苯烯腈(其折射率n=1.56~1.57)中的一种或多种的混合物,第二透明材料层2232包括聚碳酸酯(n=其折射率1.60)、聚苯乙烯(其折射率n=1.6)、聚(2-乙烯基噻吩)(n=其折射率1.6376)中的一种或多种的混合物。
对应的,本申请也提供了一种显示装置,其包括本申请实施例提供的显示面板。
根据上述实施例可知:
本申请通过提供一种新的COA上基板、显示面板以及显示装置,其内部的COA上基板包括:透明基板;黑色矩阵层,设置在所述透明基板上;透明中间层,设置在所述透明基板的裸露区域上;透明电极层,设置在所述黑色矩阵层以及所述透明中间层上;所述透明中间层的光折射率介于所述透明基板的光折射率和所述透明电极层的光折射率之间;这样就避免了ITO与玻璃基板直接接触,可以很好的降低光线在ITO出的反射率,缓解了现有显示面板存在ITO与玻璃基板的接触位置反光的技术问题。
综上所述,虽然本申请已以优选实施例揭露如上,但上述优选实施例并非用以限制本申请,本领域的普通技术人员,在不脱离本申请的精神和范围内,均可作各种更动与润饰,因此本申请的保护范围以权利要求界定的范围为准。

Claims (20)

  1. 一种COA上基板,其包括:
    透明基板;
    黑色矩阵层,设置在所述透明基板上;
    透明中间层,设置在所述透明基板的裸露区域上;
    透明电极层,设置在所述黑色矩阵层以及所述透明中间层上;
    其中,所述透明中间层的光折射率介于所述透明基板的光折射率和所述透明电极层的光折射率之间。
  2. 根据权利要求1所述的COA上基板,其中,所述透明中间层的厚度等于所述黑色矩阵层的厚度。
  3. 根据权利要求1所述的COA上基板,其中,所述透明中间层内添加有光纳米粒子。
  4. 根据权利要求3所述的COA上基板,其中,所述光纳米粒子包括用于吸收黄橙光的第一光纳米粒子、以及用于吸收青绿光的第二光纳米粒子中的至少一种。
  5. 根据权利要求3所述的COA上基板,其中,所述光纳米粒子包括罗丹明类衍生物。
  6. 根据权利要求3所述的COA上基板,其中,所述光纳米粒子包括金属纳米颗粒-罗丹明类衍生物染料的混合体系。
  7. 根据权利要求1所述的COA上基板,其中,所述透明中间层包括至少两层透明材料层。
  8. 根据权利要求7所述的COA上基板,其中,在从透明基板到透明电极层的方向上,各透明材料层的光折射率递增。
  9. 根据权利要求1所述的COA上基板,其中,所述透明中间层的材料为透明树脂。
  10. 根据权利要求8所述的COA上基板,其中,所述透明树脂包括聚(1,2-丁二烯)、聚(2-乙烯基四氢呋喃)、聚(2-乙烯基噻吩)、聚碳酸酯、聚酯树脂、聚乙烯、聚苯乙烯、聚苯乙烯-苯烯腈、聚亚安酯、聚氯乙烯中的至少一种。
  11. 一种显示面板,其包括:TFT下基板、以及与所述TFT下基板对应设置的COA上基板;所述COA上基板包括:
    透明基板;
    黑色矩阵层,设置在所述透明基板上;
    透明中间层,设置在所述透明基板的裸露区域上;
    透明电极层,设置在所述黑色矩阵层以及所述透明中间层上;
    其中,所述透明中间层的光折射率介于所述透明基板的光折射率和所述透明电极层的光折射率之间。
  12. 根据权利要求11所述的显示面板,其中,所述透明中间层的厚度等于所述黑色矩阵层的厚度。
  13. 根据权利要求11所述的显示面板,其中,所述透明中间层内添加有光纳米粒子。
  14. 根据权利要求13所述的显示面板,其中,所述光纳米粒子包括用于吸收黄橙光的第一光纳米粒子、以及用于吸收青绿光的第二光纳米粒子中的至少一种。
  15. 根据权利要求13所述的显示面板,其中,所述光纳米粒子包括罗丹明类衍生物。
  16. 根据权利要求13所述的显示面板,其中,所述光纳米粒子包括金属纳米颗粒-罗丹明类衍生物染料的混合体系。
  17. 根据权利要求11所述的显示面板,其中,所述透明中间层包括至少两层透明材料层。
  18. 根据权利要求11所述的显示面板,其中,所述透明中间层的材料为透明树脂。
  19. 根据权利要求18所述的显示面板,其中,所述透明树脂包括聚(1,2-丁二烯)、聚(2-乙烯基四氢呋喃)、聚(2-乙烯基噻吩)、聚碳酸酯、聚酯树脂、聚乙烯、聚苯乙烯、聚苯乙烯-苯烯腈、聚亚安酯、聚氯乙烯中的至少一种。
  20. 一种显示装置,其包括权利要求11所述的显示面板。
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