Patent ID: 11908410
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A display substrate, comprising a base substrate, and a plurality of repeating units, an intermediate layer, and a pixel definition layer on the base substrate,
wherein each of the plurality of repeating units comprises a plurality of sub-pixels, and each of the plurality of sub-pixels comprises a light-emitting element and a pixel circuit for driving the light-emitting element to emit light;
the light-emitting element comprises a first light-emitting voltage application electrode, a second light-emitting voltage application electrode, and a light-emitting layer between the first light-emitting voltage application electrode and the second light-emitting voltage application electrode;
wherein in a direction perpendicular to a surface of the base substrate, the pixel definition layer is located on a side of the first light-emitting voltage application electrode of the light-emitting element of each of the plurality of sub-pixels away from the base substrate and comprises a plurality of openings;
in the direction perpendicular to the surface of the base substrate, the pixel circuit is located between the intermediate layer and the base substrate, the light-emitting element is located on a side of the intermediate layer away from the base substrate, the intermediate layer comprises a plurality of via holes, and the first light-emitting voltage application electrode of the light-emitting element of each of the plurality of sub-pixels is connected to the pixel circuit of each of the plurality of sub-pixels through a corresponding via hole of the plurality of via holes;
the first light-emitting voltage application electrode of the light-emitting element of each of the plurality of sub-pixels comprises an extension portion extending from an edge of an opening, corresponding to the first light-emitting voltage application electrode of the light-emitting element of each of the plurality of sub-pixels, of the plurality of openings to a via hole, corresponding to the first light-emitting voltage application electrode of the light-emitting element of each of the plurality of sub-pixels, of the plurality of via holes;
the plurality of sub-pixels comprise a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel, a color of light emitted by the light-emitting element of the first sub-pixel is identical to a color of light emitted by the light-emitting element of the second sub-pixel, and a shape of the first light-emitting voltage application electrode of the light-emitting element of the first sub-pixel is different from a shape of the first light-emitting voltage application electrode of the light-emitting element of the second sub-pixel;
a shape of the extension portion of the first light-emitting voltage application electrode of the light-emitting element of the first sub-pixel is different from a shape of the extension portion of the first light-emitting voltage application electrode of the light-emitting element of the second sub-pixel, and an area of the extension portion of the first light-emitting voltage application electrode of the light-emitting element of the first sub-pixel is different from an area of the extension portion of the first light-emitting voltage application electrode of the light-emitting element of the second sub-pixel; and
an extending direction of the extension portion of the first light-emitting voltage application electrode of the light-emitting element of the first sub-pixel and an extending direction of the extension portion of the first light-emitting voltage application electrode of the light-emitting element of the second sub-pixel both are different from an extending direction of the extension portion of the first light-emitting voltage application electrode of the light-emitting element of the third sub-pixel and an extending direction of the extension portion of the first light-emitting voltage application electrode of the light-emitting element of the fourth sub-pixel.