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Organic light emitting diode display panel and preparation method thereof

A technology for light-emitting diodes and display panels, which is applied in semiconductor/solid-state device manufacturing, semiconductor devices, electrical components, etc., can solve problems such as electrode instability, and achieve the effect of reducing contact barrier, realizing ohmic contact, and reducing voltage drop.

Active Publication Date: 2022-05-03
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, electrodes such as Ba and Ca are not stable in air.

Method used

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  • Organic light emitting diode display panel and preparation method thereof
  • Organic light emitting diode display panel and preparation method thereof
  • Organic light emitting diode display panel and preparation method thereof

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Experimental program
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Embodiment Construction

[0024] In order to make the above and other objectives, features, and advantages of the present disclosure more comprehensible, preferred embodiments of the present disclosure will be exemplified below in detail with reference to the attached drawings. Furthermore, the direction terms mentioned in this disclosure, such as up, down, top, bottom, front, back, left, right, inside, outside, side layer, surrounding, center, horizontal, transverse, vertical, longitudinal, axial , radial direction, the uppermost layer or the lowermost layer, etc., are only directions for referring to the attached drawings. Therefore, the directional terms used are used to explain and understand the present disclosure, but not to limit the present disclosure.

[0025] In the figures, structurally similar units are denoted by the same reference numerals.

[0026] figure 2 A schematic structural view of an OLED display panel according to the present disclosure is shown. Depend on figure 2 It can b...

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Abstract

An organic light emitting diode display panel and a preparation method thereof. The organic light emitting diode display panel includes: a backplane and a display device; the display device includes: a plurality of metal wiring layers, a passivation layer, a planarization layer, a plurality of first electrode layers, and a plurality of pixel definition layers; wherein , the display device defines an organic light emitting diode device region and an auxiliary cathode contact hole region with each pixel definition layer as a boundary, and the organic light emitting diode device region and the auxiliary cathode contact hole region are arranged at intervals; The auxiliary cathode contact hole region includes an electrode modification layer disposed on the first electrode layer; wherein the electrode modification layer is formed of a conjugated polymer with an amine group in a side chain. In the disclosure, the voltage drop is reduced and the brightness uniformity of the panel is improved by setting the electrode modification layer.

Description

【Technical field】 [0001] The disclosure relates to the field of display technology, in particular to an organic light emitting diode display panel and a preparation method thereof. 【Background technique】 [0002] A large-size active-matrix organic light-emitting diode (Active-Matrix Organic Light-Emitting Diode, AMOLED) display adopts a top-emitting panel structure, which can fully improve the resolution of the panel. In the top-emitting AMOLED structure, the light emitted by the organic light-emitting diode (OLED) of the front-mounted device structure needs to pass through the electron transport layer and the cathode. Therefore, the electron transport layer and the cathode must have sufficient transparency, so the thinner the cathode, the better, but A reduction in the thickness of the cathode will inevitably increase the resistance of the cathode, which will cause a voltage drop between the center and the periphery of the large-sized panel when the current flows through th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/52H01L27/32H01L21/77
CPCH10K59/122H10K50/81H10K50/824H10K59/1201
Inventor 陈金祥
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD