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:
Jul. 01, 2008
Filed:
Mar. 19, 2007
Chin-der Wey, Miaoli County, TW;
Tsung-shiun Lee, Hsin-Chu, TW;
Hung-chih Lin, Hsin-Chu, TW;
Wei-chung Chuang, Hsin-Chu, TW;
Chin-Der Wey, Miaoli County, TW;
Tsung-Shiun Lee, Hsin-Chu, TW;
Hung-Chih Lin, Hsin-Chu, TW;
Wei-Chung Chuang, Hsin-Chu, TW;
Au Optronics Corp., Hsin-Chu, TW;
Abstract
An inverter unit including a converter, a transformer, a feedback circuit and an open lamp lock circuit is provided. The converter receives a drive signal, and outputs a duty voltage signal accordingly. The transformer is selectively coupled with a lamp of a display panel module, and receives the duty voltage signal. When the transformer is coupled with the lamp, the transformer outputs an output voltage to the lamp according to the duty voltage signal to light up the lamp. The feedback circuit receives a feedback signal from the lamp, and outputs a feedback voltage signal accordingly. The open lamp lock circuit is coupled with the feedback circuit, receives a control signal, selectively receives the feedback voltage signal, and disables the drive signal selectively according to the feedback voltage signal and the control signal.