US 12,307,044 B1
Touch detection circuit
Jia-Ming He, Tainan (TW); and Yaw-Guang Chang, Tainan (TW)
Assigned to HMAX TECHNOLOGIES LIMITED, Tainan (TW)
Filed by HIMAX TECHNOLOGIES LIMITED, Tainan (TW)
Filed on Jan. 11, 2024, as Appl. No. 18/409,812.
Int. Cl. G06F 3/041 (2006.01)
CPC G06F 3/0418 (2013.01) 17 Claims
OG exemplary drawing
 
1. A signal receiver of a touch detection circuit, comprising:
a signal receiving line, receiving a driving signal through a first capacitor and coupled to a plurality of display pixel circuits through a second capacitor;
a signal processing circuit, coupled to the signal receiving line, receiving a received signal on the signal receiving line and generate a touch detection information according to the received signal; and
a compensation circuit, coupled to the signal receiving line, generating a first compensation current according to driving currents of a plurality of source driving circuits, generating a second compensation current according to sinking currents of the source driving circuits, and generating a compensation signal according to the first compensation current and the second compensation current.