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. 17, 2004
Filed:
Feb. 13, 2001
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A liquid crystal display apparatus and a data driver of the present invention is provided with a sampling pulse generating circuit. The sampling pulse generating circuit is provided with a shift register for shift operation having a plurality of set-reset type flip-flops, and analog switches whose opening and closing of each analog switch is controlled in response to each output of the respective flip-flops so that a clock signal is outputted during the opening as a sampling pulse. Sampling of the image signal is carried out in accordance with the sampling pulses. The pulse width of the sampling pulse varies depending on the duty ratio of the clock signal, thereby ensuring to avoid that active periods of the adjoining sampling pulses overlap with each other.