DISPLAY SUBSTRATE AND PREPARATION METHOD THEREFOR, AND DISPLAY APPARATUS

WIPO Patent Application WO/2022/204918

A1

A display substrate and a preparation method therefor, and a display apparatus. The display substrate comprises a base, a driving circuit layer arranged on the base, and a light-emitting structure layer arranged on the side of the driving circuit layer that is away from the base, wherein the driving circuit layer comprises a transistor; the light-emitting structure layer comprises a first electrode, a pixel defining layer, an organic light-emitting layer and a second electrode, the first electrode being connected to a drain electrode of the transistor, and the organic light-emitting layer being located between the first electrode and the second electrode; and the pixel defining layer comprises a plurality of first retaining walls and a plurality of second retaining walls, the height of the first retaining walls is less than the height of the second retaining walls, and the first retaining walls and the second retaining walls define, in a crossing manner, a plurality of pixel opening regions, which comprise first pixel opening regions and second pixel opening regions, the area of the first pixel opening regions is larger than the area of the second pixel opening regions, and a first pixel opening region and a second pixel opening region that are adjacent are partitioned by a first retaining wall.

ZHANG YUE (CN)
CUI YING (CN)
SUN LI (CN)

PCT/CN2021/083843

October 06, 2022

March 30, 2021

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BOE TECHNOLOGY GROUP CO LTD (CN)

H01L27/32; H01L51/56

CN109273499A	2019-01-25
CN111463353A	2020-07-28
US20070132356A1	2007-06-14
US20110198598A1	2011-08-18

AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE (CN)

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