Patent ID: 11917893
Assignee: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Optics (Instruments)
Classification: CPC H  C  G | IPC C  G  H

Claim 0:
1. A method for manufacturing a mask plate, comprising:
providing a substrate; and
forming a first opening portion and a second opening portion on the substrate by using an etching method,
wherein the first opening portion comprises a first edge and a second edge that extend linearly, an extending line of the first edge and an extending line of the second edge intersect at a first vertex to form a first corner of the first opening portion,
the second opening portion is at the first corner and protrudes outward, and an edge of the second opening portion intersects with the first edge and the second edge, thereby communicating with the first opening portion,
the first opening portion and the second opening portion are used for evaporation on a display area of an organic light-emitting device, and the second opening portion is used to compensate for a corner of the display area during evaporation,
the edge of the second opening portion is a combination of an arc part and a straight-line part, and the arc part passes through the first vertex.