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:
Jul. 03, 2001
Filed:
Jan. 30, 1997
Applicant:
Inventors:
Kiyoshi Yamamoto, Tokyo, JP;
Shoji Kamasako, Tokyo, JP;
Assignee:
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/36 ;
U.S. Cl.
CPC ...
G09G 3/36 ;
Abstract
A liquid crystal display apparatus includes a liquid crystal display panel which indicates information represented by a contrast of the segments of the liquid crystal display when a drive voltage is applied to the display. A temperature meter measures the temperature of the LCD panel and the ambient temperature. A drive voltage setting device sets the drive voltage to be voltage to be applied to the LCD panel so as to maintain a constant contrast in accordance with the temperature value measured by the temperature meter. A drive voltage supply supplies the drive voltage set by the drive voltage setting device to the LCD panel.