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:
Jun. 28, 2000
Masahiro Takahashi, Yamatokoriyama, JP;
Yoshiyuki Kokuhata, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A driving method is disclosed which prevents a remaining image from occurring at the time of turning off of the display device. In particular, the driving method for the display device is such that, when the power-supply signal is switched from ON state to OFF state, non-lit-up display data is outputted so that all the pixels are switched to the non-lit-up display. The display elements are maintained in the non-lit-up display state over the entire surface of the display up to completion of a period corresponding to a predetermined number of frames after the frame in which the power-supply OFF signal has been detected. The driving operation, which takes place immediately before the completion of the output of the non-lit-up display data within the non-display period, is maintained until the scanning start signal has risen, and the driver output control signal is switched from ON state to OFF state in synchronism with the rise of the scanning start signal.