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:
May. 26, 2015
Filed:
Jan. 10, 2012
Akizumi Fujioka, Osaka, JP;
Akinori Kubota, Osaka, JP;
Akizumi Fujioka, Osaka, JP;
Akinori Kubota, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A liquid crystal display devices () each include a touch panel (), a liquid crystal panel (), a touch panel controller (), a liquid crystal driving controller (timing generator) (), oscillation circuits (), a correcting circuit (), and a frequency counter (). The frequency counter () counts a reference clock signal CLK supplied from the oscillation circuit () or (). The correcting circuit () determines, in accordance with information supplied from the frequency counter (), whether or not a frequency of the reference clock signal CLK is a predetermined frequency. In a case where the frequency of the reference clock signal CLK is not the predetermined frequency, the correcting circuit () corrects (i) a frequency at which the liquid crystal panel () is driven or (ii) a frequency at which sensing of the touch panel () is carried out.