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:
Feb. 28, 2023
Filed:
Feb. 05, 2016
Hitachi Chemical Dupont Microsystems, Ltd., Tokyo, JP;
Tadamitsu Nakamura, Hitachi, JP;
HD MICROSYSTEMS, LTD., Tokyo, JP;
Abstract
A positive-type photosensitive resin composition comprises a (a) polybenzoxazole precursor, a (b) crosslinking agent, a (c) photosensitive agent, and a (d) solvent, wherein the (a) component comprises a structural unit represented by Formula (1) below, and the (b) component is a compound represented by Formula (2) below. In Formula (1), U is a bivalent organic group, a single bond, —O—, or —SO—, V is a group comprising an aliphatic structure, and the carbon number in the aliphatic structure is 1 to 30. In Formula (2), Ris independently a hydrogen atom or a group represented by —CH—O—R. At least one of the plurality of Rs is a group represented by —CH—O—R. Ris independently a hydrogen atom or an alkyl group having 1 to 6 carbon atoms.