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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.:

US 12581886 B1

PDFFull Text
Date of Patent:
Mar. 17, 2026

Filed:

Nov. 26, 2020

Protective film forming agent, and method for producing semiconductor chip

Applicant:

Tokyo Ohka Kogyo Co., Ltd., Kawasaki, JP;

Inventor:

Tetsuro Kinoshita, Kawasaki, JP;

Assignee:

TOKYO OHKA KOGYO CO., LTD., Kawasaki, JP;

Attorney:

Knobbe, Martens, Olson & Bear, LLP

Primary Examiner:

John E Uselding

Int. Cl.
CPC ...
H01L 21/78 (2006.01); H01L 23/29 (2006.01); H01L 21/268 (2006.01); H01L 21/3065 (2006.01); H01L 21/311 (2006.01); H01L 23/31 (2006.01);
U.S. Cl.
CPC ...
H01L 21/78 (2013.01); H01L 23/293 (2013.01); H01L 21/268 (2013.01); H01L 21/3065 (2013.01); H01L 21/31105 (2013.01); H01L 21/31127 (2013.01); H01L 23/3192 (2013.01);
Abstract

A protective film forming agent that, in dicing of a semiconductor wafer, is used to form a protective film on the surface of the semiconductor wafer, can form a protective film that has excellent laser processability, and has excellent solubility of a light-absorbing agent; and a method for producing a semiconductor chip using the protective film forming agent. The protective film forming agent includes a water-soluble resin, a light-absorbing agent, a basic compound, and a solvent. The basic compound is an alkylamine, an alkanolamine, an imidazole compound, ammonia, or an alkali metal hydroxide. The light-absorbing agent content of the protective film forming agent is 0.1-10 mass % (inclusive).

Find Patent Forward Citations

Kinoshita, Tetsuro. (2026). Protective film forming agent, and method for producing semiconductor chip (U.S. Patent No. 12581886). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12581886

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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