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:
May. 22, 2012
Filed:
Jun. 04, 2010
Yung-chun Lin, Taoyuan County, TW;
Po-wen Wang, Taipei County, TW;
Chin-sheng Chueh, Taoyuan, TW;
Jiun-wei Tseng, Changhua County, TW;
Yung-Chun Lin, Taoyuan County, TW;
Po-Wen Wang, Taipei County, TW;
Chin-Sheng Chueh, Taoyuan, TW;
Jiun-Wei Tseng, Changhua County, TW;
Qisda Corporation, Taoyuan County, TW;
Abstract
In order to provide open-lamp protection to a backlight module, a pseudo open-lamp voltage is first generated according to the current flowing through a light source. If the backlight module receives a mode signal corresponding to a high contrast mode, a compensation voltage is added to the pseudo open-lamp voltage for generating a reference voltage. If the reference voltage is larger than a feedback voltage received from an input node of the light source, a driving voltage is outputted to the light source.