Patent ID: 11917865
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 0:
1. A display substrate, comprising:
a substrate,
a plurality of pixels, and
a pixel definition layer on the substrate, wherein:
the plurality of pixels comprise long sides and short sides formed in pixel opening areas defined by the pixel definition layer;
the pixel definition layer comprises long-side sections adjacent to the long sides, and short-side sections adjacent to the short sides, and heights of the long-side sections are greater than heights of the short-side sections;
a length l1 of at least one of the long sides, a length l2 of at least one of the short sides, a height h1 of at least one of the long-side sections, and a height h2 of at least one of the short-side sections satisfy h1/h2=(⅓˜¾)l1/l2 to form a film with a uniform thickness in the pixel opening areas; and
the pixel definition layer comprises a lyophilic material layer, and a lyophobic material layer on a side of the lyophilic material layer away from the substrate; a thickness s1 of the lyophobic material layer, and a thickness s2 of the lyophilic material layer of a long-side section satisfy s1≥½*s2 to improve the uniformity of the thickness of the film in the pixel opening areas.