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. 16, 2024
Filed:
Apr. 03, 2020
Applicant:
Toppan Printing Co., Ltd., Tokyo, JP;
Inventor:
Takehiro Nishi, Tokyo, JP;
Assignee:
TOPPAN PRINTING CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C 14/04 (2006.01); C23C 14/24 (2006.01); B05C 21/00 (2006.01); H10K 71/16 (2023.01); H05B 33/10 (2006.01); H10K 71/00 (2023.01);
U.S. Cl.
CPC ...
H10K 71/166 (2023.02); C23C 14/042 (2013.01); C23C 14/24 (2013.01); H05B 33/10 (2013.01); H10K 71/00 (2023.02);
Abstract
A vapor deposition mask includes a front surface, a back surface opposite to the front surface, and inner surfaces defining the respective mask holes. Each mask hole extends between the front surface and the back surface. In a plan view of the front surface, each mask hole includes a large opening, which is located at the front surface, and a small opening, which is located inside the large opening. At least a section of each mask hole has a shape of an inverted frustum extending between the large opening and the small opening. Each inner surface includes a stepped surface spreading from the small opening toward the large opening.