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:
Apr. 22, 2003
Filed:
May. 26, 2000
Applicant:
Inventors:
Nobuo Shimizu, Shiga, JP;
Yasuhiro Kosaka, Shiga, JP;
Assignee:
NEC Electronics Corporation, Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/36 ;
U.S. Cl.
CPC ...
G09G 3/36 ;
Abstract
A horizontal driver in a LCD driver includes a D/A converter having a PROM decoder block and an NROM decoder block for driving a LCD panel in a dot reversible driving scheme. Each data line receives alternately a gray-scale signal having a positive polarity generated by a PROM decoder and a gray-scale signal having a negative polarity generated by an NROM decoder, and an odd-numbered data line and an even-numbered data line receive gray-scale signals having opposite polarities. The order of the decoders is matched by a switching block with the order of the data lines by switching the display data and the gray-scale signals.