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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 11905356 B1

PDFFull Text
Date of Patent:
Feb. 20, 2024

Filed:

Mar. 03, 2022

Bismaleimide compound, composition containing same, polybenzoxazole, and semiconductor device

Applicant:

Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;

Inventors:

Naoki Kawamoto, Tokyo, JP;

Firyon Ko, Tokyo, JP;

Taihei Koumoto, Tokyo, JP;

Assignee:

Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;

Attorney:

NIELDS, LEMACK & FRAME, LLC.

Primary Examiner:

Arrie L Reuther

Assistant Examiner:

David L Miller

Int. Cl.
CPC ...
C07D 207/24 (2006.01); C08F 222/40 (2006.01); C08L 79/08 (2006.01); C08J 5/18 (2006.01); C07D 207/22 (2006.01); H01L 23/532 (2006.01); H01L 23/29 (2006.01); H01L 21/027 (2006.01); C08F 122/40 (2006.01); C08F 22/40 (2006.01); C08F 236/14 (2006.01);
U.S. Cl.
CPC ...
C08F 222/408 (2020.02); C07D 207/22 (2013.01); C07D 207/24 (2013.01); C08J 5/18 (2013.01); C08L 79/085 (2013.01); C08F 22/40 (2013.01); C08F 122/40 (2013.01); C08F 222/40 (2013.01); C08F 222/404 (2020.02); C08F 222/406 (2020.02); C08F 236/14 (2013.01); C08J 2379/08 (2013.01); H01L 21/0271 (2013.01); H01L 23/293 (2013.01); H01L 23/5329 (2013.01);
Abstract

An object of the present invention is to provide a novel photosensitive resin precursor that can be developed with an alkali and ring-closed even at low temperatures, and preferably has excellent thermal properties and excellent electric properties after curing, and also to provide a use application thereof. As means for achieving the object, disclosed are a bismaleimide compound comprising, in one molecule, two partial structures in each of which a carbon atom having a substituent represented by the following formula (A) (wherein Y represents a direct bond or a divalent linking group), and a carbon atom having a hydroxy group are directly bonded to each other, a polymer which is a self-polymer of the bismaleimide compound, and a benzoxazole which is an intramolecular dehydrated ring-closed product of the polymer.

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