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:
Nov. 24, 2015
Filed:
May. 09, 2012
Akihito Akai, Kodaira, JP;
Tatsuya Ishii, Kodaira, JP;
Kazuya Endo, Itami, JP;
Shinobu Notomi, Itami, JP;
Akihiro Kodama, Itami, JP;
Akihito Akai, Kodaira, JP;
Tatsuya Ishii, Kodaira, JP;
Kazuya Endo, Itami, JP;
Shinobu Notomi, Itami, JP;
Akihiro Kodama, Itami, JP;
SYNAPTICS DISPLAY DEVICES GK, Tokyo, JP;
Abstract
Provided is a touch sensor panel which can increase the detection sensitivity of a touch relatively readily. The touch sensor panel controller supplies drive electrodes of a touch sensor panel with a high-voltage AC drive signal with its low level set to a negative voltage and drives them. The time of change of a drive waveform supplied to the drive electrodes of the touch sensor panel is shifted relative to the time of change of a drive waveform supplied to a display scan electrode. The touch sensor panel controller uses a charge pump in synchronization with clock signals of more than one phase to produce a high drive voltage to activate drive electrodes of the touch sensor panel, and the clock signals of more than one phase are initialized each time the drive electrode is subjected to AC pulse driving.