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. 03, 1998
Filed:
Dec. 06, 1996
Tokyo Ohka Kogyo Co., Ltd., Kanagawa, JP;
Abstract
A photosensitive resin composition for forming light shielding films is of particular utility in forming a black matrix for use in display elements such as of a CRT display, a liquid crystal panel, a plasma display and the like. The photosensitive resin composition is comprised of a photopolymerizable compound, a photopolymerization initiator, and light shielding materials composed of an oxide of copper and an oxide or oxides of at least one metal selected from iron, manganese, chromium, cobalt and nickel. The black matrix so obtained is conducive to high heat resistance, greatly light shielding and sharp image contrast as well as to excellent electrical insulation resistance. For use in the plasma display in particular, a black matrix is producible by coating of the photosensitive resin composition on a given substrate, followed by exposure of the coat to selective irradiation with active light rays to form a pattern therein and by subsequently burning of the pattern.