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. 05, 2013
Filed:
Sep. 30, 2008
Chien-hung Tsai, Tainan, TW;
Jia-hui Wang, Tainan, TW;
Ching-chung Lee, Tainan County, TW;
Himax Technologies Limited, Tainan, TW;
NCKU Research & Development Foundation, Tainan, TW;
Abstract
An output buffer and a source driver for a display panel are provided. The output buffer includes a differential input stage, a bias current source, a feedback module, and an output stage. The differential input stage has a first input terminal and a second input terminal receiving a first input signal and a second input signal respectively, and a first output terminal. The bias module provides a bias current to the differential input stage. The output stage has a second output terminal coupled to the first input terminal for providing an output current to the second output terminal based on a signal of the first output terminal. The feedback module adjusts the bias current and the output current based on the first input signal and the second input signal. The output buffer has ability of switching the output voltage to be low level and high level in high-speed.