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:
Jan. 10, 2006
Filed:
Jul. 24, 2001
Tomoaki Kawada, Mobara, JP;
Akio Tezuka, Mobara, JP;
Hisao Hirayama, Mobara, JP;
Toshitsugu Miyawaki, Mobara, JP;
Masataka Natori, Abiko, JP;
Tomoaki Kawada, Mobara, JP;
Akio Tezuka, Mobara, JP;
Hisao Hirayama, Mobara, JP;
Toshitsugu Miyawaki, Mobara, JP;
Masataka Natori, Abiko, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Electronic Devices Co., Ltd., Chiba-ken, JP;
Abstract
In a liquid crystal display device having the so-called side-edge type backlight system which comprises: a liquid crystal display panel; a light guide plate being disposed opposite to a main surface of the liquid crystal panel; and a linear lamp being disposed along one of sides of the light guide plate, the present invention provides a plurality of grooves at a corner area of an edge of the light guide plate along which the linear lamp is disposed so that the plurality of grooves are extended in a direction slanted to the edge of the light guide plate. In accordance with this structural feature, the present invention enables a high quality image display performance of the liquid crystal display panel by suppressing the display irregularity appearing therein effectively.