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. 29, 2012
Filed:
Oct. 27, 2008
Chien-hung Tsai, Tainan, TW;
Jia-hui Wang, Tainan, TW;
Jing-chuan Qiu, Tainan, TW;
Chen-yu Wang, Tainan County, TW;
Chien-Hung Tsai, Tainan, TW;
Jia-Hui Wang, Tainan, TW;
Jing-Chuan Qiu, Tainan, TW;
Chen-Yu Wang, Tainan County, TW;
Himax Technologies Limited, Tainan, TW;
NCKU Research & Development Foundation, Tainan, TW;
Abstract
A source driving circuit adapted to drive a display panel is provided herein. The source driving circuit includes a first output buffer and a second output buffer responsible for enhancing signals with different polarities respectively. As for the first output buffer, the first output buffer includes a first differential input stage, a first output stage and a second output stage. The first output stage includes a first level adjustment circuit and a first self-bias providing circuit. The first level adjustment circuit provides a first level voltage according to input signals received by the first differential input stage, such that the second output stage thereby provides a first charge current and a second charge current to output a first output signal based on the first level voltage. The first self-bias providing circuit provides a first biased voltage associated with one input signal to control the first level adjustment circuit to operate.