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:
Dec. 11, 2012
Filed:
Jul. 24, 2009
Kentaroh Irie, Osaka, JP;
Fumikazu Shimoshikiryoh, Osaka, JP;
Masae Kawabata, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A plurality of groups each of which includes a plurality of scanning signal lines are sequentially selected; a polarity of the data signal electric potentials in one (first group) of sequentially-selected groups is set to be different from that of the other (second group) of the two groups; two pieces of dummy scan periods are put between (i) a horizontal scan period corresponding to a last horizontal scan in the first group and (ii) a horizontal scan period corresponding to a first horizontal scan in the second group; dummy signal electric potentials are supplied to the data signal line in the dummy scan periods; and a time period from when a scanning pulse which corresponds to the last horizontal scan in the first group becomes nonactive to when the dummy scan period is started is set to be longer than a time period from when a scanning pulse corresponding to one of consecutive two horizontal scans becomes nonactive in the first group to when a horizontal scan period corresponding to the other of the consecutive two horizontal scans is started. This makes it possible to enhance display quality in a case where the data signal line is subjected to the block-reversal driving.