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:
Jan. 13, 2004
Filed:
Mar. 13, 2001
Applicant:
Inventor:
Junichiro Nakayama, Tajimi, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/36 ;
U.S. Cl.
CPC ...
G09G 3/36 ;
Abstract
A liquid crystal data display device has a liquid crystal panel unit, and a backlight unit is further equipped with an illuminometer for measuring ambient illuminance. Panel brightness Bp (cd/m ) is done by using an equation Bp=a×1n (I)+b when ambient illuminance is I (1x), wherein 10<a<340, and 50<b<250.