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:
Oct. 02, 2001
Filed:
Jan. 08, 1999
Ken Kawahata, Miyagi-ken, JP;
LG. Philips LCD Co., Ltd., Seoul, KR;
Abstract
A liquid-crystal display device is provided which is capable of realizing dot inversion driving with fast response speed without using a data driver IC suitable for use with a high voltage. A voltage conversion circuit of the liquid-crystal display device includes a first voltage application circuit formed of a transistor which applies an output voltage as it is from a data driver, a second voltage application circuit, in which other four transistors form a switched capacitor circuit, which converts an output voltage from the data driver into an inverse output voltage and applies it to the data line, and a third voltage application circuit formed of another transistor and the like which applies an auxiliary voltage to the data line before the inverse output voltage is applied to the data line.