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:
Oct. 16, 2012
Filed:
Dec. 19, 2011
Applicants:
Takahiro Kobayashi, Okayama, JP;
Motonobu Yoshikawa, Osaka, JP;
Yuichi Nishikoji, Kyoto, JP;
Inventors:
Assignee:
Panasonic Corporation, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01);
U.S. Cl.
CPC ...
Abstract
A backlight apparatus is provided that enables a balance of brightness to be maintained over the entire area of a display screen and long life to be achieved. The surface of substrateis opposite the rear surface of liquid crystal panel. LEDsare placed on the surface of substrate. LED drive circuitssupply LEDswith a current that causes LEDsto emit light that illuminates liquid crystal panel. LED drive circuitssupply a lower current to LEDsplaced in an area having a higher ambient temperature within the surface area of substrate