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Display substrate, preparation method thereof, and display device

A display substrate and backplane technology, which is applied in semiconductor/solid-state device manufacturing, electrical components, electric solid-state devices, etc., can solve problems affecting the display effect of OLED display substrates, reducing the effective light-emitting area of ​​the light-emitting layer, and easily corroding the light-emitting layer. , to avoid the reduction of the effective luminous area, improve the display effect, and improve the luminous efficiency

Pending Publication Date: 2020-09-11
BOE TECH GRP CO LTD
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  • Abstract
  • Description
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Problems solved by technology

However, the pixel defining layer easily generates oxygen (O 2 ) and / or water vapor (H 2 O) and other gases
The gas easily corrodes the light-emitting layer in the OLED, resulting in a decrease in the effective light-emitting area of ​​the light-emitting layer, which in turn easily leads to a decrease in the luminous efficiency of the OLED and affects the display effect of the OLED display substrate.

Method used

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

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Embodiment Construction

[0031] The technical solutions in some embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments provided by the present invention belong to the protection scope of the present invention.

[0032] Unless the context requires otherwise, throughout the specification and claims, the term "comprising" is interpreted in an open and inclusive sense, ie "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiment", "example" or "some examples" are intended to indicate specific features, structures related to the embodiment or examples , material or characteristic is included in at least one embodiment or example of the inven...

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Abstract

The embodiment of the invention discloses a display substrate, a preparation method thereof, and a display device, and relates to the technical field of display. The situation that gases such as O2 and / or H2O corrode a light-emitting layer is reduced or even avoided, and the display effect of the display substrate is improved. The display substrate comprises a back plate, a pixel defining layer, agas absorption layer and a plurality of light emitting layers. The pixel defining layer is arranged on one side of the back plate, and the pixel defining layer is provided with a plurality of openings. The gas absorption layer is arranged on one side, far away from the back plate, of the pixel defining layer; andthe orthographic projection of the gas absorption layer on the back plate is locatedwithin the orthographic projection range of the pixel defining layer on the back plate, or the orthographic projection of the gas absorption layer on the back plate coincides with the orthographic projection of the pixel defining layer on the back plate. One light emitting layer is at least partially located in one opening. The display substrate, the preparation method thereof and the display device, provided by the embodiment of the invention, are used for image display.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display substrate, a preparation method thereof, and a display device. Background technique [0002] Organic Light Emitting Diode (OLED) has been widely used in the display field due to its advantages of self-luminescence, low driving voltage, high luminous efficiency, fast response and flexible display. [0003] Currently, in an OLED display substrate, a pixel defining layer is usually provided, so as to use the pixel defining layer to define a plurality of sub-pixel regions of the OLED display substrate. However, the pixel defining layer easily generates oxygen (O 2 ) and / or water vapor (H 2 O) and other gases. The gas easily erodes the light-emitting layer in the OLED, resulting in a decrease in the effective light-emitting area of ​​the light-emitting layer, which in turn easily leads to a decrease in the light-emitting efficiency of the OLED and affects the display eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L51/56H01L27/32H01L21/77
CPCH10K59/122H10K59/1201H10K59/874H10K50/846H10K71/00
Inventor 马坤张晓晋王丹赵梦高荣荣
Owner BOE TECH GRP CO LTD
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