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. 20, 2026
Filed:
May. 02, 2022
Applicant:
Disco Corporation, Tokyo, JP;
Inventors:
Senichi Ryo, Tokyo, JP;
Yuki Ikeda, Tokyo, JP;
Yukinobu Ohura, Tokyo, JP;
Toshiyuki Yoshikawa, Tokyo, JP;
Assignee:
DISCO CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/304 (2006.01); C09D 5/32 (2006.01); C09D 7/20 (2018.01); C09D 7/41 (2018.01); C09D 129/04 (2006.01); H01L 21/78 (2006.01); H01L 23/29 (2006.01); C08K 5/08 (2006.01); H01L 23/31 (2006.01);
U.S. Cl.
CPC ...
H01L 21/78 (2013.01); C09D 5/32 (2013.01); C09D 7/20 (2018.01); C09D 7/41 (2018.01); C09D 129/04 (2013.01); H01L 23/293 (2013.01); C08K 5/08 (2013.01); H01L 23/3157 (2013.01);
Abstract
A protective film substance for laser processing includes a solution including a water-soluble resin, an organic solvent, and a light absorbent. The solution has an absorbance, i.e., an absorbance converted for a solution diluted 200 times, equal to 0.05 or more per an optical path length of 1 cm at a wavelength of 532 nm. Alternatively, the protective film substance for laser processing includes a solution including a water-soluble resin, an organic solvent, and a polyhydroxyanthraquinone derivative.