CN204271086U - A display body with a light extraction structure - Google Patents

A kind of display screen body taking out structure containing light described in the utility model, comprise substrate, be successively set on the light of described surface and take out structure and pixel cell, described pixel cell comprise stack gradually setting the first electrode layer, organic function layer and the second electrode lay described in light take out structure.Described light takes out structure and comprises anti-crosstalk layer, and described anti-crosstalk layer forms continuous print network.Described light taking-up structure also comprises microcylinder light removing layer structure and the surface plasma light of device is extracted.Described first light takes out structure distribution in network.It is to improve light extraction efficiency that light takes out structure, and network is arranged on pixel edge and plays anti-crosstalk, further avoid light crosstalk between pixel, thus obtains the display screen body with higher definition, high-luminous-efficiency.

一种含光取出结构的显示屏体A display body with a light extraction structure

技术领域technical field

本实用新型涉及有机电致发光领域，具体涉及一种光取出效率高且无串扰的的显示屏体。The utility model relates to the field of organic electroluminescence, in particular to a display screen body with high light extraction efficiency and no crosstalk.

背景技术Background technique

经过近三十年的发展，有机电致发光显示屏体(英文全称为OrganicLight Emitting Device，简称为OLED)作为下一代照明和显示技术，具有色域宽、响应快、广视角、无污染、高对比度、平面化等优点，已经在照明和显示上得到一定程度的应用。典型的显示屏体一般包括透明基板1、第一透明电极3、第二电极5、以及设置在两个电极间的有机功能层4。通常底发光OLED的阴极为平面金属，具有良好的反射效果。由于磷光材料的应用,其内量子效率几乎达到了理论的极限值100％,但其外量子效率却只有20％左右,制约外量子效率进一步提高的主要因素是器件的光取出效率。为了提高OLED屏体的光出射效率，通常会在屏体内设计光取出结构。例如内部的散射层、微光栅或者外部的散射膜，透镜膜等。上述设计均会造成屏体表面的严重漫反射，无法在显示屏上应用。After nearly 30 years of development, organic electroluminescent display body (English full name is OrganicLight Emitting Device, referred to as OLED), as the next generation lighting and display technology, has wide color gamut, fast response, wide viewing angle, no pollution, high The advantages of contrast and planarization have been applied to a certain extent in lighting and display. A typical display body generally includes a transparent substrate 1 , a first transparent electrode 3 , a second electrode 5 , and an organic functional layer 4 disposed between the two electrodes. Usually the cathode of the bottom-emitting OLED is a flat metal, which has a good reflection effect. Due to the application of phosphorescent materials, its internal quantum efficiency has almost reached the theoretical limit of 100%, but its external quantum efficiency is only about 20%. The main factor restricting the further improvement of external quantum efficiency is the light extraction efficiency of the device. In order to improve the light output efficiency of the OLED screen body, a light extraction structure is usually designed in the screen body. For example, the internal scattering layer, micro-grating or external scattering film, lens film and so on. All the above designs will cause serious diffuse reflection on the surface of the screen body, which cannot be applied on the display screen.

CN103700783A公开了一种用于有机发光二极管(OLED)光取出的光栅结构，在玻璃基板和透明阳极之间设置有高低折射率材料交替排列构成的栅格结构，折射率材料的横截面为封闭图形，其中与玻璃基板相对的边a平行于与玻璃基板接触的边b，且0≤a≤b(b≠0)；所述高折射率材料的折射率不小于1.8，所述低折射率材料的折射率不大于1.5。该专利申请是在玻璃基板和OLED阳极之间加入折射率高低交替的光栅结构取出波导模式的光，采用高折射率材料与基板接触减少全反射，从而提高OLED器件或屏体的效率。但该方案也是主要基于通过栅格，减少全反射方案，栅格密排。该结构栅格容易造成像素间光线串扰，因此无法在显示中应用。CN103700783A discloses a grating structure used for light extraction of organic light-emitting diodes (OLEDs). A grid structure composed of alternately arranged high and low refractive index materials is arranged between the glass substrate and the transparent anode. The cross section of the refractive index material is a closed figure , wherein the side a opposite to the glass substrate is parallel to the side b in contact with the glass substrate, and 0≤a≤b (b≠0); the refractive index of the high refractive index material is not less than 1.8, and the low refractive index material The refractive index is not greater than 1.5. The patent application is to add a grating structure with alternating high and low refractive index between the glass substrate and the OLED anode to extract the light in the waveguide mode, and use high refractive index materials to contact the substrate to reduce total reflection, thereby improving the efficiency of OLED devices or screens. However, this solution is also mainly based on passing the grid, reducing the total reflection scheme, and the grid is densely packed. This structural grid is prone to cause light crosstalk between pixels, so it cannot be applied in displays.

通常光取出层采用散射或者光栅等光学结构，通过改变发光的方向，将器件内部的光提取出来。例如CN03147098.X中，通过加入散射颗粒提高光取出；另如KR20110035792通过改变表面形貌提高光取出；还有在Nature photonics|VOL 2|AUGUST 2008中，作者提出采用低折射栅格来提高光取出。因为上述都是从改变发光方向出发，将原本全反射的光提取出来。但发光方向的改变意味着屏体表面像素间光线串扰，导致显示不清晰。Usually, the light extraction layer adopts an optical structure such as scattering or grating, and extracts the light inside the device by changing the direction of light emission. For example, in CN03147098.X, the light extraction is improved by adding scattering particles; another example is KR20110035792, which improves the light extraction by changing the surface morphology; and in Nature photonics|VOL 2|AUGUST 2008, the author proposes to use low refraction grids to improve light extraction . Because the above all start from changing the direction of light emission, and extract the light that was originally totally reflected. However, the change of the light emitting direction means that the light crosstalk between the pixels on the surface of the screen causes the display to be unclear.

OLED光发射过程中，其损失包括了发射电极表面等离子模式、ITO与玻璃表面全发射、玻璃与空气界面全反射等。OLED器件光损失模式包括表面等离子模式、ITO/Glass界面全反射和基板/空气表面全反射三种，具体见图10所述光损失示意图，其中a代表ITO/Glass界面全反射，b代表表面等离子模式光损失，c代表基板/空气表面全反射。上述两份专利文献在于解决ITO/Glass界面损失和基板/空气表面损失两种，对于表面等离子模式损失研究较少。In the process of OLED light emission, its loss includes the surface plasmon mode of the emitting electrode, the total emission of ITO and glass surface, the total reflection of glass and air interface, etc. The light loss modes of OLED devices include surface plasmon mode, ITO/Glass interface total reflection and substrate/air surface total reflection. For details, see the light loss schematic diagram in Figure 10, where a represents ITO/Glass interface total reflection, and b represents surface plasmon The modal light loss, c represents the total reflection of the substrate/air surface. The above two patent documents focus on solving ITO/Glass interface loss and substrate/air surface loss, and there are few studies on surface plasmon mode loss.

CN200410008012公开了一种有机电致发光(EL)显示器件组件包括衬底、有机EL部分、光损耗防止层和微隙层。有机EL部分包含第一电极层、有机发光层和第二电极层,这些层均被构图并堆叠在衬底的上表面上。光损耗防止层用于提高光射出效率。所述光取出层使用气体填充或者抽成真空的微隙层，其分别具有预定间距和预定高度的多个凸起构成的衍射光栅，衍射光栅的图区间距为200nm-2000nm，高度为50-5000nm，每个凸起可以是不同的形状，如圆柱体或者多棱锥体。该方案也是的光路变化图见图11，其发明目的基于减少全发射出发，需要结构密集排布。而且对折射率有特殊要求，需要采用高低交替的折射率，需要分别选择高折射率材质及低折射率材质，对选材有特殊要求。CN200410008012 discloses an organic electroluminescence (EL) display device assembly including a substrate, an organic EL part, a light loss prevention layer and a micro-gap layer. The organic EL part includes a first electrode layer, an organic light emitting layer and a second electrode layer, all of which are patterned and stacked on the upper surface of the substrate. The light loss preventing layer is used to improve light extraction efficiency. The light extraction layer uses a gas-filled or evacuated micro-gap layer, which respectively has a diffraction grating composed of a plurality of protrusions with a predetermined pitch and a predetermined height. 5000nm, each protrusion can be a different shape, such as a cylinder or a pyramid. The optical path change diagram of this solution is also shown in Figure 11. The purpose of the invention is based on the reduction of total emission, which requires a dense arrangement of structures. Moreover, there are special requirements for the refractive index, which requires alternating high and low refractive indices, and it is necessary to select high-refractive-index materials and low-refractive-index materials respectively, and there are special requirements for material selection.

发明内容Contents of the invention

为此，本实用新型所要解决的是解决现有光取出方案容易造成像素间光线串扰，无法在显示像素中应用的问题。本实用新型提供一种含光取出结构的显示屏体，其中光取出层采用微柱体光取出层结构或在取出结构上设置微孔的方式使得器件的表面等离子光被提取出来，且该结构在一定程度上对像素光线串扰有所改善。同时光取出结构通过在像素边缘设置防串扰层，进一步改善像素间光线串扰，从而获得具有较高的清晰度、高发光效率的显示屏体。Therefore, what the utility model aims to solve is to solve the problem that the existing light extraction scheme easily causes light crosstalk between pixels and cannot be applied in display pixels. The utility model provides a display screen body with a light extraction structure, wherein the light extraction layer adopts a micro-column light extraction layer structure or a microhole is arranged on the extraction structure so that the surface plasmon light of the device is extracted, and the structure To a certain extent, the pixel light crosstalk has been improved. At the same time, the light extraction structure further improves the light crosstalk between pixels by setting an anti-crosstalk layer on the edge of the pixels, so as to obtain a display body with high definition and high luminous efficiency.

为解决上述技术问题，本实用新型采用的技术方案如下：For solving the problems of the technologies described above, the technical scheme that the utility model adopts is as follows:

一种含光取出结构的显示屏体，包括在基板上形成的若干像素单元，每一所述像素单元包括依次堆叠设置的第一电极层、有机功能层和第二电极层，所述像素单元还包括设置在所述基板和第二电极层之间的光取出层，所述光取出层中设置有用以改变第二电极反射界面平整性的若干不同质界面区域，所述不同质界面区域占所述光取出层面积的0.1-30％；优选地，所述不同质界面区域占所述光取出层面积的0.1-20％，优选，0.5-10％，最优选0.5-5％。A display body with a light extraction structure, including several pixel units formed on a substrate, each of which includes a first electrode layer, an organic functional layer and a second electrode layer stacked in sequence, and the pixel unit It also includes a light extraction layer arranged between the substrate and the second electrode layer, the light extraction layer is provided with several different interface regions for changing the flatness of the reflection interface of the second electrode, and the different interface regions occupy 0.1-30% of the area of the light extraction layer; preferably, the heterogeneous interface region accounts for 0.1-20% of the area of the light extraction layer, preferably, 0.5-10%, most preferably 0.5-5%.

相邻所述像素单元之间设置有防串扰层，所述防串扰层的高度大于等于所述光取出层的厚度。An anti-crosstalk layer is disposed between adjacent pixel units, and the height of the anti-crosstalk layer is greater than or equal to the thickness of the light extraction layer.

所述防串扰层为黑色矩阵层或反射材料层。The anti-crosstalk layer is a black matrix layer or a reflective material layer.

所述黑色矩阵层是黑色矩阵层为黑色光阻材料层，所述反射材料层为金属反光材料层或者高反射率的无机盐类材料层。The black matrix layer is a black photoresist material layer, and the reflective material layer is a metal reflective material layer or an inorganic salt material layer with high reflectivity.

所述光取出层为若干微柱体构成的微柱体光取出层，相邻所述微柱体之间为空白区域，所述微柱体构成所述不同质界面区域。The light extraction layer is a micro-pillar light extraction layer composed of several micro-pillars, and there is a blank area between adjacent micro-pillars, and the micro-pillars constitute the heterogeneous interface area.

所述光取出层包括光取出本体材料和在光取出本体材料中设置的若干微孔，所述微孔构成所述不同质界面区域。The light extraction layer includes a light extraction body material and several micropores arranged in the light extraction body material, and the microholes constitute the heterogeneous interface region.

所述微柱体或微孔贯穿于所述光取出层，所述微柱体或微孔的中心线垂直于所述基板。The micro-pillars or micro-holes run through the light extraction layer, and the center lines of the micro-pillars or micro-holes are perpendicular to the substrate.

所述微柱体或微孔的横截面为规则形状和/或不规则形状。The micropillars or micropores have regular and/or irregular cross-sections.

相邻所述微柱体或微孔之间的最短距离0<d≤100μm。The shortest distance between adjacent micropillars or micropores is 0<d≤100 μm.

所述光取出层的厚度为1-10000nm，优选10-3000nm。The thickness of the light extraction layer is 1-10000 nm, preferably 10-3000 nm.

所述有机发光层包括空穴注入层、空穴传输层、发光层、电子传输层和电子注入层中的一层或其组合；The organic light-emitting layer includes one or a combination of a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer and an electron injection layer;

所述光取出层设置在所述基板、第一电极、空穴注入层、空穴传输层、发光层、电子传输层、电子注入层和第二电极层中任意相邻的两层之间。The light extraction layer is disposed between any adjacent two layers of the substrate, the first electrode, the hole injection layer, the hole transport layer, the light emitting layer, the electron transport layer, the electron injection layer and the second electrode layer.

所述显示屏体为顶发光模式、底发光模式或白光+滤光膜模式。The display body is in top emission mode, bottom emission mode or white light+filter film mode.

本实用新型的上述技术方案相比现有技术具有以下优点：Compared with the prior art, the above-mentioned technical solution of the utility model has the following advantages:

(1)本实用新型提供一种含光取出结构的显示屏体，其中光取出层为采用微柱体光取出层结构或在光取出层上设置微孔的方式使得器件的表面等离子光被提取出来，同时通过在像素边缘设置防串扰层，进一步改善像素间光线串扰，从而获得具有较高的清晰度、高发光效率的显示屏体。所以外界进入屏体的光线，大部分以镜面反射形式反射出去，有效减少了光线在像素之间的串扰，进一步提高了光取出的效率。大量测试实验验证表明，采用含有该光取出层的器件，其光取出效率可以提高20％以上。(1) The utility model provides a display body with a light extraction structure, wherein the light extraction layer adopts a micro-column light extraction layer structure or sets microholes on the light extraction layer so that the surface plasmon light of the device is extracted At the same time, by setting an anti-crosstalk layer on the edge of the pixels, the light crosstalk between pixels is further improved, so as to obtain a display body with high definition and high luminous efficiency. Therefore, most of the light entering the screen from the outside is reflected in the form of mirror reflection, which effectively reduces the crosstalk of light between pixels and further improves the efficiency of light extraction. A large number of tests and experiments have shown that the light extraction efficiency of the device containing the light extraction layer can be increased by more than 20%.

(2)所述光取出层旨在解决表面等离子模式光损失，采用微柱体结构或在光取出层上设置微孔构成不同质界面区域，所述微柱体或微孔的面积占发光面积的0.1-30％，优选为0.1-20％，再优选为0.5-10％，最优选0.5-5％。这是由于表面等离子模式光沿着反射电极表面传播，横向传输距离大，只需在较大间隔内打破反射电极平面性，就可以获得较好光取出效果。因此设置的构成不同质界面区域的微柱体或微孔的面积占比非常少，最优占比范围为0.5-5％，且单个尺寸小于人眼相应使用距离的最小分辨尺寸。光取出层的材质及折射率等均无特殊要求，不需要特殊高折射或低折射材质的材料，从而选材更加广泛。(2) The light extraction layer is designed to solve the light loss of the surface plasmon mode, adopting a micro-pillar structure or setting micro-holes on the light-extraction layer to form a heterogeneous interface area, and the area of the micro-pillars or micro-holes accounts for the light-emitting area 0.1-30%, preferably 0.1-20%, more preferably 0.5-10%, most preferably 0.5-5%. This is because the surface plasmon mode light propagates along the surface of the reflective electrode, and the lateral transmission distance is large. Only by breaking the planarity of the reflective electrode within a relatively large interval can a better light extraction effect be obtained. Therefore, the area ratio of the micropillars or micropores that constitute the heterogeneous interface area is very small, the optimal ratio range is 0.5-5%, and the individual size is smaller than the minimum resolution size of the corresponding use distance of the human eye. There are no special requirements on the material and refractive index of the light extraction layer, and there is no need for special high or low refraction materials, so the selection of materials is more extensive.

(3)本实用新型通过设置防串扰层，具体采用黑色矩阵层或反射层，可以减少光取出单元的侧面光损失，提高像素单元的光利用率，同时可以提高有机发光显示器件的对比度，具有较高的光取出效率，具有广泛的应用。(3) The utility model can reduce the side light loss of the light extraction unit by setting an anti-crosstalk layer, specifically a black matrix layer or a reflective layer, improve the light utilization rate of the pixel unit, and can improve the contrast of the organic light-emitting display device at the same time. High light extraction efficiency, with a wide range of applications.

附图说明Description of drawings

为了使本实用新型的内容更容易被清楚的理解，下面根据本实用新型的具体实施例并结合附图，对本实用新型作进一步详细的说明，其中：In order to make the content of the utility model easier to be clearly understood, the utility model is described in further detail below according to specific embodiments of the utility model in conjunction with the accompanying drawings, wherein:

图1是本实用新型含光取出结构的显示屏体的结构示意图；Fig. 1 is the structure schematic diagram of the display screen body of the utility model containing the light extraction structure;

图2为本实用新型第二实施方式的结构示意图；Fig. 2 is the structural representation of the second embodiment of the utility model;

图3为含光取出结构的底发光OLED显示屏；Figure 3 is a bottom-emitting OLED display with a light extraction structure;

图4为含光取出结构的顶发光OLED显示屏；Figure 4 is a top-emitting OLED display with a light extraction structure;

图5为含光取出结构的白光加CF结构OLED显示屏；Figure 5 is a white light plus CF structure OLED display with a light extraction structure;

图6为微柱体的横截面图；Fig. 6 is the cross-sectional view of microcolumn;

图7为微柱体另一实施方式的横截面图；Figure 7 is a cross-sectional view of another embodiment of the micropillar;

图8为设置有微孔的光取出层横截面图；Fig. 8 is a cross-sectional view of a light extraction layer provided with microholes;

图9为微柱体呈六边形排布的结构示意图；Fig. 9 is a structural schematic diagram of micro cylinders arranged in a hexagonal shape;

图10为OLED光损失模式示意图；10 is a schematic diagram of OLED light loss mode;

图11为现有技术光路示意图；FIG. 11 is a schematic diagram of an optical path in the prior art;

图中附图标记表示为：1-基板，2-第一电极层，3-光取出层，4-有机功能层，5-第二电极，6-微柱体，7-彩色滤光片，10-防串扰层，13-微孔。The reference numerals in the figure are represented as: 1-substrate, 2-first electrode layer, 3-light extraction layer, 4-organic functional layer, 5-second electrode, 6-micro-pillar, 7-color filter, 10-anti-crosstalk layer, 13-microhole.

具体实施方式Detailed ways

为了使本实用新型的目的、技术方案和优点更加清楚，下面将结合附图对本实用新型的实施方式作进一步地详细描述。In order to make the purpose, technical solution and advantages of the utility model clearer, the implementation of the utility model will be further described in detail below in conjunction with the accompanying drawings.

本实用新型可以以许多不同的形式实施，而不应该被理解为限于在此阐述的实施例。相反，提供这些实施例，使得本公开将是彻底和完整的，并且将把本实用新型的构思充分传达给本领域技术人员，本实用新型将仅由权利要求来限定。在附图中，为了清晰起见，会夸大层和区域的尺寸和相对尺寸。应当理解的是，当元件例如层、区域或基板被称作“形成在”或“设置在”另一元件“上”时，该元件可以直接设置在所述另一元件上，或者也可以存在中间元件。相反，当元件被称作“直接形成在”或“直接设置在”另一元件上时，不存在中间元件。This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of the invention to those skilled in the art, and the present invention will only be defined by the appended claims. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. It will be understood that when an element such as a layer, region or substrate is referred to as being "formed on" or "disposed on" another element, it can be directly on the other element or present middle element. In contrast, when an element is referred to as being "directly formed on" or "directly disposed on" another element, there are no intervening elements present.

如图1所示，本实用新型的一种含光取出结构的显示屏体，包括在基板1上形成的若干像素单元，每一所述像素单元包括依次堆叠设置的第一电极层2、有机功能层4和第二电极层5，所述像素单元还包括设置在所述基板和第二电极层5之间的光取出层3，所述光取出层3中设置有用以改变第二电极反射界面平整性的若干不同质界面区域，所述不同质界面区域占所述光取出层面积的0.1-30％；优选0.1-20％，进一步优选至0.5-10％，最优选0.5-5％。As shown in Figure 1, a display body with a light extraction structure of the present invention includes several pixel units formed on a substrate 1, each of which includes a first electrode layer 2 stacked in sequence, an organic The functional layer 4 and the second electrode layer 5, the pixel unit also includes a light extraction layer 3 arranged between the substrate and the second electrode layer 5, the light extraction layer 3 is provided with a material for changing the reflection of the second electrode Several heterogeneous interface regions of interface flatness, the heterogeneous interface regions account for 0.1-30% of the area of the light extraction layer; preferably 0.1-20%, more preferably 0.5-10%, most preferably 0.5-5%.

相邻所述像素单元之间设置有防串扰层10，所述防串扰层10的高度大于等于所述光取出层3的厚度。如图1所示，所述防串扰层10的高度大于等于所述微柱形光取出层的厚度。第一电极层2设置在所述基板的上方，光取出层、有机功能层4和第二电极层5形成在第一电极结构上方。An anti-crosstalk layer 10 is disposed between adjacent pixel units, and the height of the anti-crosstalk layer 10 is greater than or equal to the thickness of the light extraction layer 3 . As shown in FIG. 1 , the height of the anti-crosstalk layer 10 is greater than or equal to the thickness of the microcolumnar light extraction layer. The first electrode layer 2 is arranged above the substrate, and the light extraction layer, the organic functional layer 4 and the second electrode layer 5 are formed above the first electrode structure.

所述防串扰层10为黑色矩阵层，具体为黑色光阻材料层，比如采用分散有炭黑或有机黑色颜料等材料的光刻胶，或黑色的金属如Cr等。The anti-crosstalk layer 10 is a black matrix layer, specifically a black photoresist material layer, such as a photoresist dispersed with carbon black or organic black pigment, or a black metal such as Cr.

所述光取出层3的位置没有特别限定，可以设置在基板和第二电极之间的任意两层之间。如图1所示，所述光取出层3设置在基第一电极层2和有机功能层4之间。所述有机功能层包括空穴注入层、空穴传输层、发光层、电子注入层和电子传输层；所述微柱体光取出层设置在上述任意两层的界面之间。所述光取出层的厚度为1-10000nm，优选10-3000nm。The position of the light extraction layer 3 is not particularly limited, and may be disposed between any two layers between the substrate and the second electrode. As shown in FIG. 1 , the light extraction layer 3 is disposed between the first electrode layer 2 and the organic functional layer 4 . The organic functional layer includes a hole injection layer, a hole transport layer, a light emitting layer, an electron injection layer and an electron transport layer; the microcolumn light extraction layer is arranged between the interface of any two layers above. The thickness of the light extraction layer is 1-10000 nm, preferably 10-3000 nm.

如图6-图8所示，所述光取出层3为若干微柱体6构成的微柱体光取出层，相邻所述微柱体6之间为空白区域，所述微柱体6构成所述不同质界面区域。微柱体的横截面形状没有特别要求，可以为任何规则形状或不规则形状，或者规则形状和不规则形状的组合。当微柱体6为图6所示的圆柱体时，所述所柱体的半径r≤50μm，相邻所述微柱体6中心线之间的间距d≤100μm。当微柱体6横截面为图7所示的三角形时，三角形外切圆的半径的r≤50μm，相邻所述三角形的最短距离d≤100μm。所述微柱体6的横截面面积为光取出层3整体发光面积的0.1-30％，优选0.5-10％，最优选0.5-5％。所述微柱体6可以选用的材料没有特别限定，可以为任何透明和易图形化的导电材料或绝缘材料。微柱体结构面积占比非常小，则不用太多考虑材料的导电性及透光率等，可设置于基板和第二电极层之间的任何相邻两层之间。作为另一种实施方式，如图8所示，所述光取出层3包括光取出本体材料和在光取出本体材料中设置的若干微孔13，所述微孔13构成所述不同质界面区域。微孔13贯穿于所述光取出层3，其中心线垂直于所述基板1。光取出层3设置位置也可以在基板和第二电极之间的任意相邻的两层之间。在光取出层3上设置微孔结构，由于材料本身界面较大，如设置在ITO与玻璃表面，则选择透光率较高的材料；如设置在ITO与有机层界面，则选择具有一定导电性的透明材料。如位于有机材料界面，则选择有对应传输能力的材料较好。As shown in Figures 6-8, the light extraction layer 3 is a micro-pillar light extraction layer composed of several micro-pillars 6, and there is a blank area between the adjacent micro-pillars 6, and the micro-pillars 6 The heterogeneous interface region is formed. There is no special requirement for the cross-sectional shape of the micropillars, and it can be any regular shape or irregular shape, or a combination of regular shape and irregular shape. When the micro cylinders 6 are cylinders as shown in FIG. 6 , the radius r of the cylinders is ≤50 μm, and the distance d between the centerlines of adjacent micro cylinders 6 is ≤100 μm. When the cross-section of the micropillar 6 is a triangle as shown in FIG. 7 , the radius r of the circumscribed circle of the triangle is ≤50 μm, and the shortest distance d between adjacent triangles is ≤100 μm. The cross-sectional area of the micropillars 6 is 0.1-30%, preferably 0.5-10%, and most preferably 0.5-5% of the total light emitting area of the light extraction layer 3 . The material that can be selected for the micropillars 6 is not particularly limited, and can be any transparent and easy-to-pattern conductive material or insulating material. The area ratio of the micro-column structure is very small, so there is no need to consider too much the conductivity and light transmittance of the material, and it can be arranged between any two adjacent layers between the substrate and the second electrode layer. As another embodiment, as shown in FIG. 8, the light extraction layer 3 includes a light extraction body material and several microholes 13 arranged in the light extraction body material, and the microholes 13 constitute the heterogeneous interface region . The microhole 13 runs through the light extraction layer 3 , and its center line is perpendicular to the substrate 1 . The location of the light extraction layer 3 may also be between any adjacent two layers between the substrate and the second electrode. The microporous structure is arranged on the light extraction layer 3. Since the interface of the material itself is relatively large, if it is arranged on the surface of ITO and glass, a material with higher light transmittance is selected; if it is arranged on the interface of ITO and the organic layer, it is selected to have certain conductivity. Sexy transparent material. If it is located at the interface of organic materials, it is better to choose materials with corresponding transmission capabilities.

其中微柱体为圆柱体，所述微柱体采用图7所示的六边形排布方式为优选方式。Wherein the micro-pillars are cylinders, and the hexagonal arrangement of the micro-pillars as shown in FIG. 7 is a preferred manner.

本实用新型的含光取出结构的显示屏体在制备过程中，第一电极层1、有机功能层4和第二电极层5的制备均为本领域常规技术，在沉积微柱体光取出层时，可以通过使用掩膜板沉积微柱体。如果光取出层上设置微孔，是先沉积光取出层3，然后再通过刻蚀方式形成微孔13。In the preparation process of the display screen body with light extraction structure of the present invention, the preparation of the first electrode layer 1, the organic functional layer 4 and the second electrode layer 5 are all conventional techniques in the field, and the light extraction layer of the deposited micro-column , the micropillars can be deposited by using a mask. If microholes are provided on the light extraction layer, the light extraction layer 3 is deposited first, and then the microholes 13 are formed by etching.

作为本实用新型的其他实施方式，微柱体光取出层可以为多层。As other embodiments of the present invention, the micro-pillar light extraction layer may be multi-layered.

作为另一种实施方式，如图2所示，本实用新型的防串扰层10采用反射材料制备，所述反射材料层为金属反光材料，如Al、Mo、Cr等，或者高反射率的无机盐类材料，如硫酸钡等。所述防串扰层的高度为彩色滤光片7、第一电极层2和微柱体光取出层三者厚度之和。As another embodiment, as shown in Figure 2, the anti-crosstalk layer 10 of the present invention is made of reflective material, and the reflective material layer is a metal reflective material, such as Al, Mo, Cr, etc., or an inorganic material with high reflectivity Salt materials, such as barium sulfate, etc. The height of the anti-crosstalk layer is the sum of the thicknesses of the color filter 7, the first electrode layer 2 and the micro-pillar light extraction layer.

图3所示为含光取出结构的底发光OLED显示屏，防串扰层10在基板上形成连续的网格结构，第一电极层2、微柱体光取出层，有机功能层和第二电极层5形成在所述网格结构中，第二电极层5为反射电极，第一电极层2为透明电极。第一电极层2和光取出层3设置在所述网格结构中，所述防串扰层10的高度等于所述像素单元的高度。Figure 3 shows a bottom-emitting OLED display with a light extraction structure, the anti-crosstalk layer 10 forms a continuous grid structure on the substrate, the first electrode layer 2, the micro-column light extraction layer, the organic functional layer and the second electrode Layer 5 is formed in the grid structure, the second electrode layer 5 is a reflective electrode, and the first electrode layer 2 is a transparent electrode. The first electrode layer 2 and the light extraction layer 3 are arranged in the grid structure, and the height of the anti-crosstalk layer 10 is equal to the height of the pixel unit.

图4所示为含光取出结构的顶发光OLED显示屏，防串扰层10在基板1上形成连续的网格结构，微柱体光取出层、第二电极层5、有机功能层和第一电极层2形成在所述网格结构中，第二电极层5为反射电极，第一电极层2为透明电极。所述防串扰层10的高度等于所述像素单元的高度。Figure 4 shows a top-emission OLED display with a light extraction structure, the anti-crosstalk layer 10 forms a continuous grid structure on the substrate 1, the micro-column light extraction layer, the second electrode layer 5, the organic functional layer and the first The electrode layer 2 is formed in the grid structure, the second electrode layer 5 is a reflective electrode, and the first electrode layer 2 is a transparent electrode. The height of the anti-crosstalk layer 10 is equal to the height of the pixel units.

图5为含光取出结构的白光加彩色滤光片CF结构OLED显示屏，防串扰层10在基板1上形成连续的网格结构，微柱体光取出层、第二电极层5、有机功能层、第一电极层2和彩色滤光片7形成在所述网格结构中，，第二电极层5为反射电极，第一电极层2为透明电极，彩色滤光片7为红色滤光片、绿色滤光片或蓝色滤光片，所述防串扰层10的高度等于所述第一电极层2和彩色滤光片7的厚度之和。Figure 5 is a white light plus color filter CF structure OLED display with a light extraction structure, the anti-crosstalk layer 10 forms a continuous grid structure on the substrate 1, the micro-pillar light extraction layer, the second electrode layer 5, and the organic function layer, the first electrode layer 2 and the color filter 7 are formed in the grid structure, the second electrode layer 5 is a reflective electrode, the first electrode layer 2 is a transparent electrode, and the color filter 7 is a red filter sheet, green filter or blue filter, the height of the anti-crosstalk layer 10 is equal to the sum of the thicknesses of the first electrode layer 2 and the color filter 7 .

显然，上述实施例仅仅是为清楚地说明所作的举例，而并非对实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本实用新型的保护范围之中。Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in different forms can also be made. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the protection scope of the present utility model.