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:
Jun. 05, 2012
Filed:
Feb. 19, 2009
Yoshifumi Sekiguchi, Hitachiota, JP;
Naoki Iwasaki, Mobara, JP;
Yoshihiro Imajo, Mobara, JP;
Panasonic Liquid Crystal Display Co., Ltd., Hyogo, JP;
Hitachi Displays, Ltd., Chiba, JP;
Abstract
A liquid crystal display device is provided with a backlight where there is little inconsistency in the temperature in the fluorescent lamps and which can illuminate the liquid crystal panel well even when the structure is thin. The liquid crystal display has a liquid crystal panel and a backlight for illuminating this panel, wherein when the side of the liquid crystal panel on which the backlight is placed is a rear side and the side which faces the backlight is a front side, the backlight has: a housing having a side with an opening; a number of fluorescent lamps in long tube form which are placed inside the housing; and a light source drive circuit with a coil which drives the number of fluorescent lamps, where the number of fluorescent lamps are placed at the bottom of a lower frame which forms the housing, the bottom of the lower frame has such a form that a recess towards the front side is provided at a predetermined location, the light source drive circuit is placed on the rear side of the lower frame and in a region in the recess towards the front side at the bottom of the lower frame, and a metal plate is provided between the rear side of the lower frame and the coil mounted in the light source drive circuit.