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. 14, 2009
Filed:
Apr. 04, 2007
Toshihiro Yajima, Mobara, JP;
Seiichi Nishiyama, Mobara, JP;
Shigetake Takaku, Mobara, JP;
Yoshiharu Takeda, Mobara, JP;
Shigeo Mikoshiba, Tokyo, JP;
Tomokazu Shiga, Kawasaki, JP;
Koji Hashimoto, Kawasaki, JP;
Yusuke Baba, Fuchu, JP;
Toshihiro Yajima, Mobara, JP;
Seiichi Nishiyama, Mobara, JP;
Shigetake Takaku, Mobara, JP;
Yoshiharu Takeda, Mobara, JP;
Shigeo Mikoshiba, Tokyo, JP;
Tomokazu Shiga, Kawasaki, JP;
Koji Hashimoto, Kawasaki, JP;
Yusuke Baba, Fuchu, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Electronic Devices, Ltd., Chiba-ken, JP;
Abstract
A liquid crystal display device includes a liquid crystal display panel and a backlight disposed behind the liquid crystal display panel. The backlight includes: a light source including a discharge tube having no electrodes therein, and first and second electrodes disposed outside the discharge tube; and a power source which supplies first and second high-frequency voltages to the first and second electrodes, respectively. The first and second electrodes are disposed at two ends of the discharge tube in a direction of a longitudinal axis thereof, respectively. A length of a first wiring for coupling the power source to the first electrode is approximately equal to a length of a second wiring for coupling the power source to the second electrode.