US 12,135,849 B2
Touch display substrate and driving method therefor, and display device
Peng Liu, Beijing (CN); Peirong Huo, Beijing (CN); Hong Liu, Beijing (CN); Chao Liang, Beijing (CN); Aiyu Ding, Beijing (CN); Zhenhong Xiao, Beijing (CN); Yongqiang Zhang, Beijing (CN); Yusheng Liu, Beijing (CN); Jingyi Xu, Beijing (CN); Jiantao Liu, Beijing (CN); and Bo Li, Beijing (CN)
Assigned to ORDOS YUANSHENG OPTOELECTRONICS CO. LTD., Inner Mongolia (CN); and BOE TECHNOLOGY GROUP CO, LTD., Beijing (CN)
Appl. No. 17/789,243
Filed by ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., Inner Mongolia (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Aug. 4, 2021, PCT No. PCT/CN2021/110655
§ 371(c)(1), (2) Date Jun. 27, 2022,
PCT Pub. No. WO2022/068384, PCT Pub. Date Apr. 7, 2022.
Claims priority of application No. 202011059250.4 (CN), filed on Sep. 30, 2020.
Prior Publication US 2023/0043173 A1, Feb. 9, 2023
Int. Cl. G06F 3/041 (2006.01)
CPC G06F 3/04164 (2019.05) [G06F 3/0412 (2013.01)] 18 Claims
OG exemplary drawing
 
15. A method for driving a touch display substrate, comprising:
in a display stage, providing a control signal at an effective potential by each of first control lines and second control lines, and controlling a connected touch electrode and a connected target signal line to be conducted and the connected touch electrode and a connected touch signal line to be conducted by each signal transmission circuit in response to the control signal, wherein the target signal line and the touch signal line output common electrode signals to the touch electrode conducted with the target signal line and the touch signal line; and
in an ith touch stage of n touch stages, providing a control signal at an effective potential by a first control line connected to an ith signal transmission circuit in at least two signal transmission circuits connected to each touch signal line, and providing a control signal at ineffective potential by a second control line connected to the ith signal transmission circuit; providing a control signal at the effective potential by a second control line connected to another signal transmission circuit, other than the ith signal transmission circuit, in the at least two signal transmission circuits, and providing a control signal at the ineffective potential by a first control line connected to the another signal transmission circuit; controlling a connected touch electrode and the connected target signal line to be conducted by the ith signal transmission circuit in response to the control signal at the effective potential provided by the first control line, wherein the target signal line outputs a touch modulation signal to the touch electrode conducted with the target signal line; and controlling the connected touch electrode and the connected touch signal line to be conducted by the another signal transmission circuit in response to the control signal at the effective potential provided by the second control line, wherein the touch signal line receives a touch signal fed back by the touch electrode conducted with the touch signal line;
wherein n is a number of the signal transmission circuits connected to each touch signal line, n is an integer greater than 1, and i is a positive integer not greater than n;
wherein each signal transmission circuit comprises a first signal transmission sub-circuit and a second signal transmission sub-circuit;
the first signal transmission sub-circuit is connected to the first control line, the target signal line, and the touch electrode, and the first signal transmission sub-circuit is configured to control the conduction/non-conduction between the touch electrode and the target signal line in response to the control signal provided by the first control line; and
the second signal transmission sub-circuit is connected to the second control line, the touch signal line, and the touch electrode, and the second signal transmission sub-circuit is configured to control the conduction/non-conduction between the touch electrode and the touch signal line in response to the control signal provided by the second control line; and
wherein the first signal transmission sub-circuit comprises a first signal transmission unit and a second signal transmission unit; and the first control line comprises a first sub-control line and a second sub-control line; wherein
the first signal transmission unit is connected to the first sub-control line, the target signal line, and one touch electrode, and the first signal transmission unit is configured to control the conduction/non-conduction between the touch electrode and the target signal line in response to a first control signal provided by the first sub-control line; and
the second signal transmission unit is connected to the second sub-control line, the target signal line, and one touch electrode, and the second signal transmission unit is configured to control the conduction/non-conduction between the touch electrode and the target signal line in response to a second control signal provided by the second sub-control line;
wherein the first control signal and the second control signal are complementary.