US 11,054,933 B2
Touch sensor circuit and touch sensor method
Ching-Lin Jen, Hsinchu (TW); Ssu-Che Yang, Hsinchu (TW); Chia-Yi Chu, Hsinchu (TW); Chung-Lin Chiang, Hsinchu (TW); Yao-Jui Chang, Hsinchu (TW); and Keng-Nan Chen, Hsinchu (TW)
Assigned to SILICON INTEGRATED SYSTEMS CORP., Hsinchu (TW)
Filed by Silicon Integrated Systems Corp., Hsinchu (TW)
Filed on Nov. 21, 2018, as Appl. No. 16/198,145.
Claims priority of application No. 106140603 (TW), filed on Nov. 22, 2017.
Prior Publication US 2019/0155441 A1, May 23, 2019
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/0416 (2013.01) [G06F 3/044 (2013.01); G06F 3/041662 (2019.05); G06F 2203/04104 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A touch sensor circuit, comprising:
a driving circuit configured to generate a driving signal;
a self-capacitive sensor circuit configured to generate a self-capacitive sensing result;
a mutual-capacitive sensor circuit configured to generate a mutual-capacitive sensing result after receiving the driving signal when a voltage of a node between the self-capacitive sensor circuit and the mutual capacitive sensor circuit reaches a reference voltage; and
a control circuit configured to generate a sensing result according to the self-capacitive sensing result and the mutual-capacitive sensing result.