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:
Feb. 06, 2007
Filed:
Oct. 11, 2004
Ching-lung Chang, Taoyuan County, TW;
Yao-tung Wang, Taoyuan, TW;
Ching-Lung Chang, Taoyuan County, TW;
Yao-Tung Wang, Taoyuan, TW;
Chunghwa Picture Tubes, Ltd., Taipei, TW;
Abstract
A backlight module and a feedback circuit structure thereof are provided. The backlight module comprises a plurality of tubes, a driving module, and the feedback circuit structure. The feedback circuit structure comprises a substrate, a plurality of tube contacts, a plurality of independent feedback contacts and at least a common feedback contact. The tube contacts, the independent feedback contacts and the common feedback contact are disposed on the substrate. Each independent feedback contact is electrically connected to one of the tube contacts. The common feedback contact is electrically connected to one of the independent feedback contacts. An independent feedback can proceed by transmitting feedback signals from each independent feedback contact to a corresponding lamp tube. A common feedback can proceed by first coupling the independent feedback contacts together and then transmitting feedback signals from the common feedback contact to a multiple of lamp tubes.