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. 08, 2005
Filed:
Jul. 17, 2001
Tatsuo Hamamoto, Mobara, JP;
Yoshifumi Tomita, Mobara, JP;
Tomoaki Tsuboka, Mobara, JP;
Minoru Hiroshima, Chousei, JP;
Tatsuo Hamamoto, Mobara, JP;
Yoshifumi Tomita, Mobara, JP;
Tomoaki Tsuboka, Mobara, JP;
Minoru Hiroshima, Chousei, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a liquid crystal display device comprising color filters therein, the present invention provides a color-converting material in at least one of the color filters which converts a part of an incident light of the at least one of the color filters into a light in a specific wavalength range together with a filter material passing the light in the specific wavelength range, so as to prevent deterioration of color purity of the light emitted thereby and to improve efficiency of optical utilization therein.