WO2020124911A1 - 滤光片及滤光片制备方法 - Google Patents

滤光片及滤光片制备方法 Download PDF

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Publication number
WO2020124911A1
WO2020124911A1 PCT/CN2019/083880 CN2019083880W WO2020124911A1 WO 2020124911 A1 WO2020124911 A1 WO 2020124911A1 CN 2019083880 W CN2019083880 W CN 2019083880W WO 2020124911 A1 WO2020124911 A1 WO 2020124911A1
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Prior art keywords
black matrix
layer
matrix layer
color filter
filter
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French (fr)
Inventor
余文静
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to US16/484,287 priority Critical patent/US20210356636A1/en
Publication of WO2020124911A1 publication Critical patent/WO2020124911A1/zh
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/201—Filters in the form of arrays
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/877—Arrangements for extracting light from the devices comprising scattering means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K59/8792—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers

Definitions

  • the present disclosure relates to the field of display technology, and in particular, to an optical filter and a method for manufacturing the optical filter.
  • OLED Organic Light Emitting Diode
  • the quality of the screen display affects the user's experience.
  • the display of the screen is better, but when the display device is outdoors, some light is relatively
  • the light reduces the contrast of the device and the display effect of the screen.
  • a layer of polarizer (POL) is often attached to the top of the screen, but while POL absorbs external sunlight, it also absorbs about 55% of the light emitted by the OLED. Therefore, it makes most display devices emit light As the rate decreases, the contrast of the display device decreases.
  • the contrast of the screen of the existing display device is low, the loss of light in the filter in the OLED display panel is large, the light density under the low temperature BM is low, it cannot fully absorb the outside sunlight, and cannot meet the consumer's use requirements. Need to propose further improvement and improvement programs.
  • an optical filter including a base substrate and a black matrix layer and a color filter layer on the base substrate, wherein the black matrix layer is provided in any two Between the color filter layers, the color filter is only provided on each pixel unit corresponding to the color filter, and the black matrix layer includes a lower black matrix layer, an intermediate layer and an upper black layer A matrix layer, the intermediate layer of the black matrix layer is composed of several particles, and the material of the particles is a black ball capable of astigmatism.
  • the thickness of the black matrix layer is smaller than that of the color filter layer.
  • the material of the particles is a light-absorbing material.
  • the diameter of the particles is less than 1000 nm.
  • the filter is disposed on the touch panel.
  • the filter includes:
  • the black matrix layer is provided between any two of the color filter layers, the color filter is only provided on each pixel unit corresponding to the color filter, the black matrix layer It includes a lower black matrix layer, an intermediate layer and an upper black matrix layer.
  • the intermediate layer of the black matrix layer is composed of several particles.
  • the thickness of the black matrix layer is smaller than that of the color filter layer.
  • the material of the particles is a light-absorbing material.
  • the material of the particles is a black ball that can diffuse light.
  • the diameter of the particles is less than 1000 nm.
  • an optical filter including the following steps:
  • S100 Arrange a color filter layer on the base substrate, and place the color filter only on each pixel unit corresponding to the color filter;
  • S101 An open black matrix is provided between any two of the color filter layers on the base substrate.
  • the step 101 further includes:
  • a particle layer is further provided on the lower black matrix layer
  • S203 Set another black matrix layer on the particle layer.
  • the color filter of the present disclosure is only provided on its corresponding R, G, and B pixel units.
  • the new black matrix it has The structural characteristics of the three layers, the particles in the middle layer can further scatter and absorb the light, thus reducing the emission and re-emission of light, thereby improving the contrast of the display panel, and thereby improving the display effect of the display panel.
  • FIG. 1 is a schematic structural view of a filter and a black matrix module in the first embodiment of the disclosure
  • FIG. 2 is a schematic structural diagram of a filter and a black matrix module in a second embodiment of the disclosure
  • FIG. 1 is a schematic structural diagram of the filter and the black matrix module of the present disclosure.
  • the black matrix 11 and the color filter 12 are provided on the base substrate 13, and the color filter 12 is provided only on its corresponding R, G, B pixel unit, the black matrix 11 is provided between any two of the color filters 12.
  • thin film transistors and other devices are provided between the substrate 10 and the base substrate 13.
  • the color filter 12 is a light emitting area, and is a color filter of type R, G, and B, respectively.
  • the color filter 12 in the present disclosure is only provided on the corresponding R, G, and B pixel units, and the other regions are not provided with color filters 12. In this way, after the light enters, it will filter and get different colors of light.
  • the black matrix 11 is a non-light emitting area, which is arranged between the color filters 12 in order, and then absorbs the incident light
  • FIG. 2 is a schematic diagram of the filter and the black matrix module structure when light enters in the embodiment of the present disclosure.
  • the black matrix 21 and the color filter 22 are provided on the base substrate 23, the color filter 22 is only provided on the corresponding R, G, and B pixel units, and the black matrix 21 is provided Between any two of the color filters 22, the thickness of the black matrix 21 is smaller than the thickness of the color filters 22.
  • the black matrix 21 in the non-light emitting area absorbs all or most of the incident light 24, so as to reduce the influence of the transmitted light 24 on the contrast of the display screen.
  • the absorption of light by the black matrix 11 directly affects the contrast of the display.
  • FIG. 3 is an enlarged schematic diagram of the black matrix structure in the disclosed embodiment.
  • the intermediate particle layer 31 is provided on the lower black matrix layer 30, and the upper black matrix layer 32 is provided on the intermediate particle layer 31.
  • the present disclosure adopts a black matrix layer with a three-layer structure.
  • the material of the intermediate particle is a light absorbing material, which may be some black balls.
  • these particles The diameter of the ball is less than 1000 nm.
  • these particle black balls can also reflect or scatter the light again, and part of the reflected or scattered light will enter the upper black matrix layer 32 again and be further absorbed. Some of the light that has not yet been filtered by the intermediate particle layer 31 will then reach the lower black matrix layer 30. These remaining light will be further absorbed in the lower black matrix layer 30. Therefore, the external light 33 passes through the upper black matrix layer 32, the middle After the particle layer 31 and the lower black matrix layer 30, only a small part of light remains, and most of the light is absorbed.
  • the total thickness of the black matrix layer of the three-layer structure of the present disclosure is the same as the thickness of the black matrix layer prepared in the prior art, so that the thickness of the black matrix layer structure of the present disclosure is no less than that of the prior art
  • the thickness of the black matrix layer is thicker, and it also fully guarantees the light absorption effect of the black matrix layer.
  • the display composed of the filter and the black matrix module in the present disclosure will have higher contrast. The display effect is also better.
  • the present disclosure also provides a display panel including the optical filter of the foregoing embodiment, and the display panel may be a touch panel or an OLED display panel.
  • FIG. 4 is a flowchart of an optical filter manufacturing process of the present disclosure. It includes the following steps:
  • S40 Arrange a color filter layer on the base substrate, and the color filter is only provided on each pixel unit corresponding to the color filter;
  • S41 An open black matrix is provided between any two of the color filter layers on the base substrate.
  • step S41 when the black matrix is specifically prepared, since the black matrix of the present disclosure has a multi-layer structure, step S41 further includes:
  • a particle layer is further provided on the lower black matrix layer

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Electroluminescent Light Sources (AREA)
  • Optical Filters (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种滤光片及滤光片制备方法，滤光片包括衬底基板（13，23）及黑矩阵层（11，21）和彩色滤光片层（12，22），黑矩阵层（11，21）包括下层黑矩阵层（30）、中间层（31）和上层黑矩阵层（32），中间层（31）由若干粒子组成，粒子能够进一步对光线（24，33）进行散射和吸收，减少光线（24，33）的透过，提高了显示面板的对比度和显示效果。

Description

滤光片及滤光片制备方法 技术领域
本揭示涉及显示技术领域，尤其涉及一种滤光片及滤光片制备方法。
 背景技术
有机发光二极管（OrganicLightEmitting Diode，OLED）具有自发光性、广视角、高对比、低耗电和制程简单等优点，已成为整个消费市场上的主流产品。
移动设备等其他显示设备在使用时，屏幕显示效果的好坏影响着用户的使用体验，当在光线较弱的室内使用时，屏幕的显示效果较好，但是当显示设备在室外等一些光线相对强烈的地方使用时，光线使得设备的对比度降低，屏幕显示效果的下降。目前，常在屏幕的上方贴附一层偏光片（Polarizer，POL），但是POL在吸收外界太阳光的同时，也将OLED发出的光吸收了55%左右，因此，使得大部分显示设备的发光率降低，显示设备的对比度下降。或者是在提升设备对比度时，在彩色滤光片（ColorFilter，CF）之间填充低温黑矩阵（BlackMatrix，BM），以使非发光区域的太阳光也被吸收，但是，这种方法由于制程问题，低温的BM会导致光密度（OpticalDensity，OD）值不够大，不能完全吸收外界的太阳光而再次穿透出去。
 技术问题
现有显示设备屏幕的对比度较低，OLED显示面板中滤光片中光线的损耗较大，低温的BM下光密度较低，不能完全吸收外界太阳光，不能满足消费者的使用需求。需要提出进一步的完善和改进方案。
 技术解决方案
为解决上述技术问题，本揭示提供的技术方案如下：
根据本公开实施例的第一方面，提供了一种滤光片，包括，衬底基板及衬底基板上的黑矩阵层和彩色滤光片层，其中，所述黑矩阵层设置在任意两个所述彩色滤光片层之间，所述彩色滤光片只设置在所述彩色滤光片对应的各像素单元之上，所述黑矩阵层包括下层黑矩阵层、中间层和上层黑矩阵层，所述黑矩阵层的所述中间层为若干粒子所组成，所述粒子的材料为可散光的黑球。
根据本揭示一实施例，所述黑矩阵层的厚度小于所述彩色滤光片层。
根据本揭示一实施例，所述粒子的材料为吸光材料。
根据本揭示一实施例，所述粒子的直径小于1000nm。
根据本揭示一实施例，所述滤光片设置在触控面板之上。
根据本揭示的第二个方面，还提供了一种滤光片，所述滤光片包括：
衬底基板，以及
衬底基板上的黑矩阵层和彩色滤光片层，
其中，所述黑矩阵层设置在任意两个所述彩色滤光片层之间，所述彩色滤光片只设置在所述彩色滤光片对应的各像素单元之上，所述黑矩阵层包括下层黑矩阵层、中间层和上层黑矩阵层，所述黑矩阵层的所述中间层为若干粒子所组成。
根据本揭示一实施例，所述黑矩阵层的厚度小于所述彩色滤光片层。
根据本揭示一实施例，所述粒子的材料为吸光材料。
根据本揭示一实施例，所述粒子的材料为可散光的黑球。
根据本揭示一实施例，所述粒子的直径小于1000nm。
根据本揭示的第三方面，还提供了一种滤光片的制备方法，包括以下步骤：
S100：在衬底基板上布置彩色滤光片层，将所述彩色滤光片只设置在所述彩色滤光片对应的各像素单元之上；
S101：在衬底基板上的任意两个所述彩色滤光片层之间设置开口的黑色矩阵。
根据本揭示一实施例，所述步骤101还包括：
S201：首先设置下层黑色矩阵层；
S202：再在所述下层黑色矩阵层上设置一层粒子层；
S203：在所述粒子层上再设置一层黑色矩阵层。
 有益效果
综上所述，本揭示的有益效果为：
通过对现有的显示面板中的滤光片及黑色矩阵进行改进，本揭示的彩色滤光片只设置在其对应的R、G、B各像素单元之上，在新的黑色矩阵中，具有三层的结构特性，中间层的粒子能够进一步对光线进行散射并吸收，这样，减少光线的发射和再次射出的情况，从而提高了显示面板的对比度，进而提高显示面板的显示效果。
 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揭示的一些实施例，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为本揭示第一种实施例中滤光片及黑色矩阵模组结构示意图；
图2为本揭示第二种实施例中滤光片及黑色矩阵模组结构示意图；
图3为本揭示实施例中黑色矩阵层放大示意图；
图4为本揭示的滤光片的制备工艺流程图。
 本发明的最佳实施方式
下面将结合本揭示实施例中的附图，对本揭示实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本揭示一部分实施例，而不是全部的实施例。基于本揭示中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本揭示保护的范围。
在本揭示的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本揭示和简化描述，此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本揭示的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
本实施例中，如图1所示，图1为本揭示的滤光片和黑色矩阵模组结构示意图。基板10，黑色矩阵11，彩色滤光片12，衬底基板13。所述黑色矩阵11和所述彩色滤光片12设置在衬底基板13上，并且，所述彩色滤光片12只设置在其对应的R、G、B像素单元之上，所述黑矩阵11设置在任意两个所述彩色滤光片12之间。其中，在具体的显示器产品中，基板10和衬底基板13之间会设置有薄膜晶体管等其他器件。彩色滤光片12为发光区域，分别为R、G、B类型的彩色滤光片。与传统的整片式彩色滤光片不同的是，本揭示中的所述彩色滤光片12只设置在其对应的各R、G、B像素单元之上，其他区域不设置彩色滤光片12。这样，在光线射入后会过滤并得到不同颜色的光。黑色矩阵11为非发光区域，依次设置在彩色滤光片12之间，进而对射入的光线吸收
如图2所示，图2为本揭示实施例中滤光片和黑色矩阵模组结构在光线射入时的示意图。基板20，黑色矩阵21，彩色滤光片22，衬底基板23，光线24。所述黑色矩阵21和彩色滤光片22设置在所述衬底基板23上面，所述彩色滤光片22只设置在其对应的R、G、B像素单元之上，所述黑矩阵21设置在任意两个所述彩色滤光片22之间，黑色矩阵21的厚度小于彩色滤光片22的厚度。正常情况下，非发光区域黑色矩阵21会将射入的光线24全部吸收或者是绝大部分的吸收，以减小透过的光线24对显示器屏幕对比度的影响。黑色矩阵11对光线的吸收情况直接影响到显示器的对比度，如果透过黑色矩阵11的光线过多，显示器屏幕的对比度就会较低，显示效果就会差，因此，需要尽可能的使光线在经过黑色矩阵21时，被全部吸收，或者只有很少部分光线能透过黑色矩阵21。
如图3所示，图3为本揭示实施例中黑色矩阵结构的放大示意图。下层黑色矩阵层30，中间粒子层31，上层黑色矩阵层32，外界光线33。其中，中间粒子层31设置在下层黑色矩阵层30上，上层黑色矩阵层32设置在中间粒子层31之上。为了保证光线能够最大化的被黑色矩阵吸收，本揭示本揭示采用了三层结构式的黑色矩阵层。外界光线33通过非发光区域上层黑色矩阵32时，会被吸收一部分，没有被吸收的另一部分外界光线33会到达中间粒子层31，中间粒子的材料为吸光材料，可以为一些黑球，这些粒子球的直径小于1000nm。同时这些粒子黑球还能对光线再次反射或者散射，部分被反射或散射的光线会再次进入上层黑色矩阵层32而被进一步吸收。还有部分仍未被中间粒子层31过滤的光线会接着到达下层黑色矩阵层30，这些剩余的光线在下层黑色矩阵层30进一步被吸收，因此，外界光线33在经过上层黑色矩阵层32、中间粒子层31、下层黑色矩阵层30后，只能剩余很少一部分光线，大部分光线都被吸收。其中，本揭示的三层式结构的黑色矩阵层的总厚度与现有技术中所制备的黑色矩阵层的厚度相同，这样，本揭示的黑色矩阵层结构的厚度并不会比现有技术的黑色矩阵层的厚度更厚，同时还充分的保证了黑色矩阵层的吸光效果，与一般的显示器的相比，由本揭示中的滤光片和黑色矩阵模组组成的显示器的对比度会更高，显示效果也较好。
本揭示还提供了一种显示面板，所述显示面板中包括上述实施例的滤光片，所述显示面板可以为触控面板或者OLED显示面板。
本揭示还提供了一种滤光片的制备方法，如图4所示，图4为本揭示的滤光片的制备工艺流程图。包括以下步骤：
S40：在衬底基板上布置彩色滤光片层，所述彩色滤光片只设置在所述彩色滤光片对应的各像素单元之上；
S41：在衬底基板上的任意两个所述彩色滤光片层之间设置开口的黑色矩阵。
S42：形成新的滤光片模组。
其中，上述的步骤S41中，在具体制备黑色矩阵时，由于本揭示的黑色矩阵为多层结构，因此，步骤S41还包括：
S51：首先设置下层黑色矩阵层；
S52：再在所述下层黑色矩阵层上设置一层粒子层；
S53：在所述粒子层上再设置一层黑色矩阵层。
以上对本揭示实施例所提供的一种滤光片、显示面板及滤光片的制备方法进行了详细的介绍，本文中应用了具体个例对本揭示的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本揭示的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本揭示各实施例的技术方案的范围。

Claims (12)

  1. 一种滤光片，包括，
    衬底基板，以及
    衬底基板上的黑矩阵层和彩色滤光片层，
    其中，所述黑矩阵层设置在任意两个所述彩色滤光片层之间，所述彩色滤光片只设置在所述彩色滤光片对应的各像素单元之上，所述黑矩阵层包括下层黑矩阵层、中间层和上层黑矩阵层，所述黑矩阵层的所述中间层为若干粒子所组成，所述粒子的材料为可散光的黑球。
  2. 根据权利要求1所述的滤光片，其中所述黑矩阵层的厚度小于所述彩色滤光片层。
  3. 根据权利要求1所述的滤光片，其中所述粒子的材料为吸光材料。
  4. 根据权利要求3所述的滤光片，其中所述粒子的直径小于1000nm。
  5. 根据权利要求1所述的滤光片，其中所述滤光片设置在触控面板之上。
  6. 一种滤光片，包括，
    衬底基板，以及
    衬底基板上的黑矩阵层和彩色滤光片层，
    其中，所述黑矩阵层设置在任意两个所述彩色滤光片层之间，所述彩色滤光片只设置在所述彩色滤光片对应的各像素单元之上，所述黑矩阵层包括下层黑矩阵层、中间层和上层黑矩阵层，所述黑矩阵层的所述中间层为若干粒子所组成。
  7. 根据权利要求6所述的滤光片，其中所述黑矩阵层的厚度小于所述彩色滤光片层。
  8. 根据权利要求6所述的滤光片，其中所述粒子的材料为吸光材料。
  9. 根据权利要求7所述的滤光片，其中所述粒子的材料为可散光的黑球。
  10. 根据权利要求8所述的滤光片，其中所述粒子的直径小于1000nm。
  11. 一种滤光片的制备方法，包括以下步骤：
    S100：在衬底基板上布置彩色滤光片层，所述彩色滤光片只设置在所述彩色滤光片对应的各像素单元之上；
    S101：在衬底基板上的任意两个所述彩色滤光片层之间设置开口的黑色矩阵。
  12. 根据权利要求11所述的滤光片制备方法，其中，所述步骤101还包括：
    S201：首先设置下层黑色矩阵层；
    S202：再在所述下层黑色矩阵层上设置一层粒子层；
    S203：在所述粒子层上再设置一层黑色矩阵层。
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