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. 22, 2012
Filed:
May. 16, 2008
Kyu-young Chung, Seoul, KR;
Kyu-young Chung, Seoul, KR;
Samsung Electronics Co., Ltd., Gyeonggi-Do, KR;
Abstract
Provided is an output buffer, which may be included in a source driver of a liquid crystal display (LCD) device. The output buffer may include a differential amplification unit and an output unit. The differential amplification unit may generate control currents by amplifying the difference between the voltages of an analog image signal and a signal output from the output buffer. The output unit outputs the amplified analog image signal in response to the control currents. The amount of bias current used to drive the differential amplification unit increases during a charge recycling period, and the amount of quiescent current flowing through the output unit decreases during the charge recycling period. The amount of the bias current used to drive the differential amplification unit decreases during a driving period, and the amount of the quiescent current flowing through the output unit increases during the driving period.