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A full-color organic electroluminescence device

A luminescence, red light-emitting technology, applied in the direction of circuits, electrical components, electric solid-state devices, etc., can solve the problem of color shift of RGB three-primary color devices, achieve high color accuracy, improve display effect, and improve cost performance

Active Publication Date: 2022-05-13
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many technical difficulties in the traditional production of large-scale full-color OLED light-emitting devices, including problems such as Cross-talk and color shift of traditional RGB three-primary color devices.

Method used

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  • A full-color organic electroluminescence device
  • A full-color organic electroluminescence device
  • A full-color organic electroluminescence device

Examples

Experimental program
Comparison scheme
Effect test

manufacture Embodiment 1

[0099] Manufacturing steps process:

[0100] (1) On the control circuit 1, a reflective electrode layer 2a with a thickness of ITO(7nm) / Ag(100nm) / ITO(7nm) was fabricated by magnetron sputtering, and its film resistance was 9Ω / □. Subsequently, the reflective electrode layer 2a is patterned, and the first electrode isolation column and the second electrode isolation column are fabricated on the processed reflective electrode, wherein the first electrode isolation column has a trapezoidal structure, and the second trapezoidal isolation column is an inverted structure. Ladder structure. All the reflective electrode patterns and the isolation columns of the first electrode are processed by the same photolithography process used in traditional liquid crystal panels. The photoresist material used for the first electrode isolation column and the second electrode isolation column is ZPN1168 photoresist material produced by Zeon Co., Ltd. of Japan.

[0101] (2) After completing the fa...

manufacture Embodiment 2

[0130] Complete the entire full-color OLED light-emitting device according to the steps of Manufacturing Example 1, the difference is that in the preparation process of the blue OLED device, the process of step e) and step d) is repeated after step f) to form a three-layer blue OLED light-emitting device;

manufacture Embodiment 3

[0132] Complete the whole full-color OLED light-emitting device according to the steps of Manufacturing Example 1, the difference is that LiF in steps (3) and (6) is replaced by BaF 2 ;

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Abstract

The invention relates to a full-color organic electroluminescence device, which belongs to the technical field of light-emitting device production and manufacture. The full-color organic electroluminescent device is a stacked structure, which includes, from bottom to top, a control circuit layer, a blue OLED device layer, a first buffer layer, a combination layer of light extraction and light color conversion functions, a second buffer layer and packaging layer; the light extraction and light color conversion functional combination layer includes: a light extraction functional area arranged in the blue light-emitting pixel unit area, a red light-color conversion functional area arranged in the red light-emitting pixel unit area, and a red light-color conversion functional area arranged in the green light-emitting pixel unit area The green light color conversion function area of ​​the unit area. The invention can effectively solve the problems of corss-talk and color shift of traditional RGB three-primary color devices, has the advantages of good visual effect, high yield rate, and convenient size and size, and is conducive to improving the cost performance of light-emitting devices and making OLED technology enter households. In the field of high-end large-size display applications.

Description

technical field [0001] The invention relates to a full-color organic electroluminescent device, which belongs to the technical field of light-emitting device production and manufacturing, and specifically relates to a full-color organic electroluminescent light-emitting device manufactured by light-color conversion technology. Background technique [0002] With the continuous development and progress of OLED technology, OLED display technology has been widely used in mobile phones, TVs, and computers. Compared with inorganic electroluminescent devices, organic electroluminescent devices have a wide range of material selection, can realize full-color display from blue light region to red light region, low driving voltage, high luminous brightness and luminous efficiency, wide viewing angle, and fast response speed. Fast, and easy to realize many advantages such as large area and flexible display, so it has developed rapidly in the past few years. At present, the research in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32
CPCH10K59/38
Inventor 段炼赵鑫栋叶中华张兆超李崇
Owner TSINGHUA UNIV
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