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:
Apr. 16, 2013
Filed:
Sep. 21, 2011
Hitoshi Kondou, Chiba, JP;
Shougo Yamada, Chiba, JP;
Ryousuke Asami, Chiba, JP;
Katsunori Shimada, Chiba, JP;
Hitoshi Kondou, Chiba, JP;
Shougo Yamada, Chiba, JP;
Ryousuke Asami, Chiba, JP;
Katsunori Shimada, Chiba, JP;
DIC Corporation, Tokyo, JP;
Abstract
The present invention provides a triarylmethane compound and a color filter containing the compound in a blue pixel portion, the triarylmethane compound being capable of providing a colored material which causes little change in hue over a long period of time even under high temperature or light irradiation. For example, when used for preparing a blue pixel portion of a color filter, the triarylmethane compound is capable of providing a liquid crystal display device or the like which can provide a high-brightness liquid crystal display having excellent brightness over a long period of time even under high temperature or light irradiation. The triarylmethane compound contains, as a counter anion for a basic triarylmethane dye cation, a heteropolyoxometalate anion represented by (PMoWO)/6 wherein y=an integer of 1, 2, or 3, and the color filter contains the triarylmethane compound in a blue pixel portion.