US 11,853,507 B2
Display device with built-in touch panel, and method for controlling display device with built-in touch panel
Kazutoshi Kida, Kameyama (JP); and Yasuhiro Sugita, Kameyama (JP)
Assigned to Sharp Display Technology Corporation, Kameyama (JP)
Filed by Sharp Display Technology Corporation, Kameyama (JP)
Filed on Mar. 3, 2022, as Appl. No. 17/685,876.
Claims priority of application No. 2021-035292 (JP), filed on Mar. 5, 2021.
Prior Publication US 2022/0283703 A1, Sep. 8, 2022
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/041662 (2019.05) [G06F 3/0412 (2013.01); G06F 3/0443 (2019.05)] 8 Claims
OG exemplary drawing
 
1. A display device with a built-in touch panel, the display device comprising:
a plurality of thin film transistors;
a plurality of gate lines connected to the plurality of thin film transistors, extending in a first direction, and disposed side by side in a second direction orthogonal to the first direction;
a gate drive circuit configured to sequentially supply a gate signal to the plurality of gate lines;
a plurality of touch drive electrodes disposed side by side in the second direction;
a plurality of detection electrodes disposed alternately with the plurality of touch drive electrodes in the second direction and forming an electrostatic capacitance with the plurality of touch drive electrodes;
a mutual capacitance acquisition circuit configured to supply a touch drive signal for mutual capacitance detection to the plurality of touch drive electrodes and acquire a mutual capacitance detection signal from the plurality of detection electrodes; and
a self-capacitance acquisition circuit configured to supply a touch drive signal for self-capacitance detection to the plurality of detection electrodes and acquire a self-capacitance detection signal from the plurality of detection electrodes,
wherein each of the plurality of touch drive electrodes and the plurality of detection electrodes overlaps at least one of the plurality of gate lines in a plan view, and
the self-capacitance acquisition circuit is configured to supply the touch drive signal for self-capacitance detection to at least one of the plurality of detection electrodes while the gate signal is being supplied to gate lines of the plurality of gate lines overlapping any one of the plurality of touch drive electrodes,
wherein the mutual capacitance acquisition circuit is configured to, while the gate signal is being supplied to gate lines of the plurality of gate lines overlapping any one of the plurality of touch drive electrodes, execute a first supply process to supply the touch drive signal for mutual capacitance detection to other touch drive electrode of the plurality of touch drive electrodes, and
the mutual capacitance acquisition circuit is configured to, while the gate signal is being supplied to gate lines of the plurality of gate lines overlapping any one of the plurality of detection electrodes, execute a second supply process to supply the touch drive signal for mutual capacitance detection to the other touch drive electrode before executing the first supply process.