Patent ID: 11925087
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 18:
19. The preparation method of the display substrate according to claim 18, wherein forming the pixel drive circuit in the second display region on the substrate comprises:
sequentially forming an active layer, a gate electrode, a source electrode and a drain electrode in the second display region on the substrate;
forming the plurality of first cathode blockers in the first display region comprises:
forming a first insulating layer on a side of the source electrode and the drain electrode away from the substrate;
forming a second insulating layer provided with a first via on a side of the first insulating layer away from the substrate, wherein the first via exposes the first insulating layer;
forming an anode of the active light-emitting device and an anode of the passive light-emitting device on a side of the second insulating layer away from the substrate;
forming a pixel define layer on a side of the anodes away from the substrate, wherein the pixel define layer is provided with a second via and a pixel opening region, and the second via exposes the first via, and the pixel opening region exposes the anodes;
forming an anode protection layer provided with a third via on a side of the pixel define layer away from the substrate, wherein the third via exposes the first via and the second via;
etching the second insulating layer through dry etch to form the first groove;
removing the anode protection layer;
forming a light-emitting layer in the pixel opening region on a side of the pixel define layer away from the substrate; and
forming a cathode inhibitor layer on a side of the light-emitting layer away from the substrate, wherein on a plane parallel to the display substrate, an orthographic projection of the first groove and an orthographic projection of the cathode inhibitor layer of a same first cathode blocker are alternately disposed.