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Display substrate, manufacturing method thereof and display device

A technology for displaying substrates and manufacturing methods, which is applied in semiconductor/solid-state device manufacturing, organic semiconductor devices, electrical components, etc., and can solve the problems of high resistivity, large impedance, and large voltage drop of IZO

Active Publication Date: 2020-02-18
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the resistivity of IZO is relatively large, and if it is used in medium and large-sized display panels, the impedance of the IZO cathode is relatively large
Due to the large impedance of the IZO cathode, the voltage drop (or voltage rise Vss IR Rise) on the cathode is relatively large, resulting in poor display effect of the display panel

Method used

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  • Display substrate, manufacturing method thereof and display device
  • Display substrate, manufacturing method thereof and display device
  • Display substrate, manufacturing method thereof and display device

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Embodiment Construction

[0040] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is illustrative only, and in no way restricts the disclosure, its application or uses. The present disclosure can be implemented in many different forms and is not limited to the embodiments described here. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that relative arrangements of parts and steps, compositions of materials, numerical expressions and numerical values ​​set forth in these embodiments should be interpreted as illustrative only and not as limiting, unless specifically stated otherwise.

[0041] "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distin...

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Abstract

The invention provides a display substrate, a manufacturing method thereof and a display device. The display substrate includes a back plate, a transistor layer on one side of the back plate, a firstplanarization layer on one side, far away from the back plate, of the transistor layer, an auxiliary cathode layer on one side, far away from the transistor layer, of the first planarization layer, asecond planarization layer on one side, far away from the first planarization layer, of the auxiliary cathode layer, and a light-emitting element layer on one side, far away from the auxiliary cathodelayer, of the second planarization layer. The light-emitting element layer includes a main cathode layer. And the main cathode layer is electrically connected with the auxiliary cathode layer. In thepresent disclosure, the auxiliary cathode layer is provided on one side of the back plate, and damage to the light emitting element in the manufacturing process can be reduced.

Description

technical field [0001] The present disclosure relates to the field of display technology, in particular to a display substrate, a manufacturing method thereof, and a display device. Background technique [0002] With the maturity of OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) technology, more and more customers and R&D companies are pursuing high-performance OLED display panels, such as high PPI (Pixels Per Inch, the number of pixels per inch, also That is, the pixel density) of the display panel. Top emission technology is one of the effective means to achieve high PPI display. For top emission technology, the development of transparent cathodes and reflective anodes is required. Currently, the widely used transparent cathode is IZO (Indium Zinc Oxide, indium zinc oxide), which has a high transmittance. However, the resistivity of IZO is relatively high, and if it is used in a display panel of a medium or large size, the impedance of the IZO cathode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L27/32H01L21/77
CPCH10K59/179H10K59/1201H10K59/80522H10K59/122H10K59/124H10K59/1315H10K59/126H10K50/824H10K50/822H10K59/131H10K71/00H10K2102/351
Inventor 徐攀
Owner BOE TECH GRP CO LTD