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:
Sep. 30, 2008
Filed:
Aug. 24, 2006
Shu-ming Chang, Hsinhua, TW;
Yu-pei Huang, Hsinhua, TW;
Shen-yao Liang, Hsinhua, TW;
Shwang-shi Bai, Hsinhua, TW;
Shu-Ming Chang, Hsinhua, TW;
Yu-Pei Huang, Hsinhua, TW;
Shen-Yao Liang, Hsinhua, TW;
Shwang-Shi Bai, Hsinhua, TW;
Himax Technologies Limited, Tainan County, TW;
Abstract
A backlight driver circuit has a transformer, a switching circuit and a plurality of switch devices. The switching circuit couples a DC voltage to a primary side of the transformer and alternates polarities thereof so that an AC voltage is generated on a secondary side of the transformer to turn on the backlight blocks. The switch devices are respectively connected between one of the backlight blocks and the transformer, and the AC voltage turns the backlight blocks on when the switch devices are turned on.