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. 18, 2007
Filed:
May. 17, 2004
Der-jiunn Wang, Hsinchu, TW;
Jing-meng Liu, Hsinchu, TW;
Chao-hsuan Chuang, Jhubei, TW;
Nien-hui Kung, Toufen Township, Miaoli County, TW;
Wen-hung Huang, Yangmei Township, Taoyuan County, TW;
Der-Jiunn Wang, Hsinchu, TW;
Jing-Meng Liu, Hsinchu, TW;
Chao-Hsuan Chuang, Jhubei, TW;
Nien-Hui Kung, Toufen Township, Miaoli County, TW;
Wen-Hung Huang, Yangmei Township, Taoyuan County, TW;
Richtek Technology Corp., Hsinchu, TW;
Abstract
A backlight power controller chip comprises a control circuit connected to two switches to turn on and off two display panels of a dual panel display handheld apparatus. The controller chip individually switches the two switches to control the backlight sources of the two display panels. The controller chip is available for various types of display panels.