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. 22, 2011
Filed:
Aug. 07, 2008
Ming-yan Yang, Taoyuan, TW;
Chin-long Yang, Bade, TW;
Chao-jung Lin, Bade, TW;
Darfon Electronics Corp., Gueishan, Taoyuan, TW;
Abstract
The invention discloses a backlight apparatus. The backlight apparatus includes a power source, a lamp, a balance transformer, a detecting circuit, a judging module, and a controlling module. The balance transformer includes a primary winding electrically connected to the power source and a secondary winding corresponding to the primary winding and electrically connected to the lamp. The detecting circuit is used for detecting a current generated by the secondary winding and generating a first voltage according to the current. The judging module is used for judging whether the value of the first voltage is smaller than a default value. The controlling module is used for controlling the power source according to a judgment made by the judging module.