Patent ID: 11903234
Assignee: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A preparation method of a display substrate, comprising:
forming a display region and an opening region, wherein the display region surrounds the opening region, and
forming a first barrier wall between the display region and the opening region, wherein the first barrier wall surrounds the opening region and comprises a first metal layer structure on a base substrate, and a recess is formed on at least one side surface, surrounding the opening region, of the first metal layer structure;
wherein the display region comprises a first electrode layer, a second electrode layer and an organic functional layer between the first electrode layer and the second electrode layer for forming a light emitting device, the organic functional layer is disconnected at the side surface, comprising the recess, of the first barrier wall;
an indentation direction of the recess is parallel to the base substrate.