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. 01, 2008
Filed:
Dec. 30, 2003
Toshitsugu Wakabayashi, Tokyo, JP;
Toshitsugu Wakabayashi, Tokyo, JP;
Abstract
A backlight system for use with a liquid-crystal display provides longer lamp lifetime through uniform temperature distribution, offers improved brightness uniformity and enhanced power-supply system efficiency, and ensures safety through lowered voltages. Linear lamps () are divided into left and right approximately in the middle. The distance that heat travels is therefore shorter than when linear lamps have a length extending throughout the horizontal direction, which enables more uniform temperature distribution on the entire screen and lengthens the lifetime of linear lamps (). Furthermore, stray current is halved to achieve uniform brightness and enhanced inverter efficiency and safety can be easily ensured through lowered voltages.