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Organic light-emitting diode, its manufacturing method, and display device

A technology of light-emitting diodes and organic light-emitting layers, which is applied in semiconductor/solid-state device manufacturing, electrical components, electric solid-state devices, etc., can solve problems such as shrinkage of light-emitting areas and affect product yield, and achieve the effect of solving shrinkage

Active Publication Date: 2018-07-13
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the ESL (Etch Stop Layer) structure backplane is matched with the LTC structure, which is prone to serious shrinkage of the light-emitting area in the follow-up reliability evaluation (RA, that is, reliability test), which affects the product yield.

Method used

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  • Organic light-emitting diode, its manufacturing method, and display device
  • Organic light-emitting diode, its manufacturing method, and display device
  • Organic light-emitting diode, its manufacturing method, and display device

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Embodiment Construction

[0020] In order for those skilled in the art to better understand the technical solution of the present disclosure, an organic light emitting diode, a manufacturing method thereof, and a display device including the organic light emitting diode provided in the present disclosure will be described below in conjunction with the drawings and specific embodiments. described in further detail.

[0021] figure 1 is a schematic cross-sectional view of an OLED according to a comparative example of the present invention. refer to figure 1 , the OLED 100 according to a comparative example of the present invention includes: a substrate 110; a planarization layer 120 formed on the substrate 110; a first electrode layer 130 formed on the planarization layer 120; an organic light emitting layer 140 formed On the first electrode layer 130 ; the second electrode layer 150 is formed on the organic light emitting layer 140 .

[0022] Such as figure 1 As shown, the OLED according to this com...

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Abstract

The present invention relates to an organic light emitting diode (OLED), a manufacturing method thereof, and a display device including the OLED. The OLED includes: a substrate; a planarization layer formed on the substrate; a first electrode layer formed on the planarization layer; an organic light emitting layer formed on the first electrode layer; and a second electrode layer , formed on the organic light emitting layer, wherein a portion of the first electrode layer corresponding to an edge of the planarization layer has a through hole. The present invention can provide a structure with hidden openings, which can effectively solve the situation of shrinkage without increasing the complexity of the process in the manufacturing process.

Description

technical field [0001] The present invention relates to the field of display technology, and more specifically, relates to an organic light emitting diode, a preparation method thereof, and a display device including the organic light emitting diode. Background technique [0002] In the process of manufacturing an organic light emitting diode (OLED) display device, in order to reduce costs and improve production efficiency, several testing processes are usually included in the manufacturing process. [0003] Among them, the life test unit LTC (Life Test Cell) structure is an effective test method, which can well verify the follow-up unit experiment of OLED and the test of luminous life, as well as the overall product tape-out (EN, that is, Evaluation Notice) test evaluation. Therefore, a step of preparing a backplane with an LTC structure is included in the manufacturing process of many OLED display devices. At present, the ESL (Etch Stop Layer) structure backplane with the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/50H01L51/52H01L51/56H01L27/32
CPCH10K59/00H10K50/00H10K50/805H10K71/00
Inventor 张建业李伟孙宏达
Owner BOE TECH GRP CO LTD