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:
Mar. 27, 2007
Filed:
Apr. 10, 2001
Tomohiko Yamamoto, Nara, JP;
Hisashi Nagata, Nara, JP;
Youji Yoshimura, Nara, JP;
Noboru Noguchi, Tenri, JP;
Hideki Ichioka, Nabari, JP;
Koji Fujiwara, Tenri, JP;
Naoto Inoue, Shiki-gun, JP;
Keiichi Tanaka, Tenri, JP;
Tomohiko Yamamoto, Nara, JP;
Hisashi Nagata, Nara, JP;
Youji Yoshimura, Nara, JP;
Noboru Noguchi, Tenri, JP;
Hideki Ichioka, Nabari, JP;
Koji Fujiwara, Tenri, JP;
Naoto Inoue, Shiki-gun, JP;
Keiichi Tanaka, Tenri, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
In an image display device which employs pulse width modulation driving, a voltage which is less than a voltage supplied to signal lines is applied to pixel electrodes. Tones are displayed by shifting phases of waveforms of the signal lines and scanning lines, and polarities of pixels in a signal line direction are inverted alternately. This prevents increase in power consumption which is caused by pulse intervals which become too small at high tone levels, in addition to preventing change in tone level due to external factors such as temperature, or signal delays in a driver or wiring.