The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 04, 2022
Filed:
Nov. 14, 2017
Boe Technology Group Co., Ltd., Beijing, CN;
Ordos Yuansheng Optoelectronics Co., Ltd., Inner Mongolia, CN;
Long Jin, Beijing, CN;
Fuqiang Tang, Beijing, CN;
Chun Chieh Huang, Beijing, CN;
Yu Jing, Beijing, CN;
BOE TECHNOLOGY GROUP CO., LTD., Beijing, CN;
ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., Ordos, CN;
Abstract
A mask plate and a mask sheet are provided. The mask plate includes a first mask sheet and a second mask sheet, the first mask sheet includes a first mask area located in a middle region of the first mask sheet and first peripheral areas located on both sides of the first mask area in a first direction, a thickness of the first mask area is less than a thickness of the first peripheral areas to form a first concave portion; the second mask sheet includes a second mask area located in a middle region of the second mask sheet and second peripheral areas located on both sides of the second mask area in a second direction, a thickness of the second mask area is less than a thickness of the second peripheral areas to form a second concave portion.