US 11,656,704 B2
Driving circuit
Shu-Hao Huang, Hsin-Chu (TW); and Sung-Yu Su, Hsin-Chu (TW)
Assigned to AU OPTRONICS CORPORATION, Hsin-Chu (TW)
Filed by AU Optronics Corporation, Hsin-Chu (TW)
Filed on Oct. 27, 2021, as Appl. No. 17/511,610.
Claims priority of application No. 110120830 (TW), filed on Jun. 8, 2021.
Prior Publication US 2022/0391034 A1, Dec. 8, 2022
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01); G09G 3/20 (2006.01)
CPC G06F 3/0412 (2013.01) [G06F 3/044 (2013.01); G09G 3/2092 (2013.01); G09G 2310/08 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A driving circuit, comprising:
a driving transistor;
a capacitor, electrically coupled to a gate terminal of the driving transistor;
a reset circuit, electrically coupled to the gate terminal of the driving transistor, and configured to reset an electric potential of the gate terminal of the driving transistor, wherein the reset circuit comprises a first transistor, a second transistor, and a third transistor, wherein the first transistor is configured to receive a first control signal;
a touch sensing electrode;
a sensing circuit, electrically coupled between the touch sensing electrode and the gate terminal of the driving transistor, wherein the sensing circuit comprises:
a fourth transistor, electrically coupled between the touch sensing electrode and the gate terminal of the driving transistor, with a gate terminal of the fourth transistor configured to receive a second control signal, wherein the fourth transistor is configured to change the electric potential of the gate terminal of the driving transistor according to a ratio of a difference between a high logic level and a low logic level of the second control signal to capacitance value related to the touch sensing electrode; and
a read circuit, wherein the read circuit is electrically coupled to the driving transistor, and the read circuit is configured to transmit a touch sensing signal according to the electric potential of the gate terminal of the driving transistor.