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. 30, 2021
Filed:
Oct. 23, 2019
Applicant:
Himax Technologies Limited, Tainan, TW;
Inventors:
Hui-Min Wang, Tainan, TW;
Ren-Hao Ye, Tainan, TW;
Assignee:
HIMAX TECHNOLOGIES LIMITED, Tainan, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/041 (2006.01); G06F 3/044 (2006.01); G02F 1/1333 (2006.01); G02F 1/1335 (2006.01); G06F 3/0354 (2013.01);
U.S. Cl.
CPC ...
G06F 3/04162 (2019.05); G02F 1/13338 (2013.01); G02F 1/133512 (2013.01); G06F 3/03545 (2013.01); G06F 3/0412 (2013.01); G06F 3/0441 (2019.05); G06F 3/0443 (2019.05);
Abstract
A touch-and-display device operated with an active stylus is provided. The touch-and-display device includes a touch-and-display panel and a circuit. In a touch sensing period, the circuit transmits a touch sensing signal to multiple sensing electrodes and determines at least one touched electrode and at least one untouched electrode of the sensing electrodes based on capacitance of the sensing electrodes. In a stylus sensing period, the circuit transmits an uplink signal to the untouched electrodes and applies a direct current voltage to the touched electrodes. The uplink signal is a time-varying signal.