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:
Mar. 26, 1996
Filed:
Mar. 01, 1994
Ryutaro Harada, Shinjuku, JP;
Satoshi Mitamura, Shinjuku, JP;
Abstract
A black matrix substrate is provided with a substrate, and a black pattern formed on the substrate. The black pattern includes at least metal particles in a resin pattern, which comprises resin formed in a pattern shape. The metal particles have such a particle diameter distribution that particles having particle diameters in a range of 5 nm to 50 nm are not less than 80% of the total particles. A projected area density at a conversion of 600 .ANG. thickness of the metal particles in the black pattern, is not less than 60%. An optical density of the black matrix substrate is not less than 1.5. A color filter, which has a high contrast ratio, can be constructed by use of this black matrix substrate. Further, a liquid crystal display device, which has a good image quality, can be constructed by use of this color filter.