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. 24, 2004
Filed:
Jan. 05, 2000
Shigeki Tamai, Nara, JP;
Nobuhisa Sakaguchi, Tenri, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A display drive device of the present invention includes a plurality of cascade connected source driver LSI chips for driving a liquid crystal panel in accordance with an image data signal, and each of the source driver LSI chips includes: a shift register for shifting and transmitting a start pulse signal in synchronization with a clock signal; a sampling memory for sampling the image data signal in accordance with an output of the shift register; and a hold memory for latching a selected image data signal in accordance with a latch signal, wherein a delay circuit for generating the latch signal by delaying the start pulse signal supplied by the shift register in each of the source driver LSI chips is disposed. This arrangement enables the whole device, including a controller, etc., to be produced in a smaller size and at a lower cost.