US 12,393,301 B2
Touch panel, driving method thereof, and electronic terminal
Youngil Ban, Guangdong (CN); and Jinfeng Liu, Guangdong (CN)
Assigned to TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Shenzhen (CN)
Appl. No. 18/269,773
Filed by Huizhou China Star Optoelectronics Display Co., Ltd., Guangdong (CN); and TCL China Star Optoelectronics Technology Co., Ltd., Shenzhen (CN)
PCT Filed Mar. 31, 2023, PCT No. PCT/CN2023/085708
§ 371(c)(1), (2) Date Jun. 27, 2023,
PCT Pub. No. WO2024/169005, PCT Pub. Date Aug. 22, 2024.
Claims priority of application No. 202310145108.9 (CN), filed on Feb. 17, 2023.
Prior Publication US 2025/0021186 A1, Jan. 16, 2025
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/04166 (2019.05) [G06F 3/04164 (2019.05); G06F 3/0446 (2019.05)] 9 Claims
OG exemplary drawing
 
1. A touch panel, comprising:
a touch controller;
a touch layer, comprising a plurality of touch units that are spaced apart; and
a wiring layer, comprising a plurality of touch lines connected between the touch controller and corresponding touch units,
wherein the touch panel further comprises a plurality of switches each connected to two corresponding touch lines such that when the switch is turned on, at least two corresponding touch units form a same touch area to transmit a touch signal to the touch controller;
wherein the touch controller comprises a touch scan controller and a touch read controller;
the plurality of touch lines comprise a plurality of touch scan lines and a plurality of touch read lines, the touch scanning lines connecting to the touch scan controller and corresponding touch units and the touch read lines connecting to the touch read controller and corresponding touch units;
each of the touch scan lines transmitting a corresponding touch scan signal to the corresponding touch unit to control the touch read controller to be electrically connected to the corresponding touch units,
wherein the switch is connected between at least one of two of the touch scan lines or two of the touch read lines;
wherein the touch unit comprises a touch drive circuit and a touch electrode, and the touch drive circuit comprises a switch transistor,
wherein each of the touch scan lines is electrically connected to a gate of a corresponding switch transistor, each of the touch read lines is electrically connected to one of a source or a drain of the corresponding switch transistor, and the other one of the source or the drain of the switch transistor is electrically connected to a corresponding touch electrode;
wherein the touch drive circuit further comprises a leakage transistor, and wherein a gate of the leakage transistor is configured to be loaded with a first voltage signal, one of a source and a drain loaded of the leakage transistor is configured to be loaded with a second voltage signal, and the other one of the source and the drain of the leakage transistor is connected to the corresponding touch electrode.