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. 11, 2000
Filed:
Mar. 25, 1997
Applicant:
Inventor:
Ju-Cheon Yeo, Seoul, KR;
Assignee:
LG Electronics Inc., Seoul, KR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345 99 ; 345 98 ; 345100 ;
Abstract
A ramp signal application type of data driver in a liquid crystal display. The data driver includes a plurality of shift registers and sample and hold circuits that sample data lines. A plurality of timing control parts receive the sampled data from the sample and hold circuits and n timing signals having different periods from each other to thereby perform a logical operation. A plurality of transistors receive a ramp signal and are switched in accordance with the signals output by the timing control parts to output the ramp signal based on when the transistor is on and off.