US 12,468,427 B2
Display panels and display devices
Shuiqin Shuai, Hubei (CN); and Zengjian Jin, Hubei (CN)
Assigned to WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Hubei (CN)
Appl. No. 18/552,907
Filed by WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Hubei (CN)
PCT Filed May 31, 2023, PCT No. PCT/CN2023/097616
§ 371(c)(1), (2) Date Sep. 28, 2023,
PCT Pub. No. WO2024/229910, PCT Pub. Date Nov. 14, 2024.
Claims priority of application No. 202310538392.6 (CN), filed on May 11, 2023.
Prior Publication US 2025/0085822 A1, Mar. 13, 2025
Int. Cl. G06F 3/044 (2006.01); G06F 3/041 (2006.01); G06F 3/046 (2006.01)
CPC G06F 3/0445 (2019.05) [G06F 3/0416 (2013.01); G06F 3/0446 (2019.05); G06F 3/046 (2013.01); G06F 2203/04106 (2013.01); G06F 2203/04111 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A display panel comprising a touch layer, the touch layer comprising:
a capacitive touch part comprising a plurality of first capacitive touch channels arranged at intervals in a first direction and a plurality of second capacitive touch channels arranged at intervals in a second direction, the first capacitive touch channels extending in the second direction and the second capacitive touch channels extending in the first direction; and
an electromagnetic touch part comprising a plurality of first electromagnetic touch channels arranged at intervals in the first direction and a plurality of second electromagnetic touch channels arranged at intervals in the second direction, the first electromagnetic touch channels extending in the second direction and the second electromagnetic touch channels extending in the first direction;
wherein the first direction intersects the second direction, each of the first capacitive touch channels is disposed between and insulated from two adjacent first electromagnetic touch channels, and each of the second capacitive touch channels is disposed between and insulated from two adjacent second electromagnetic touch channels,
the display panel further comprises a touch driver chip and a switch selection circuit, first ends of all the first electromagnetic touch channels away from the touch driver chip in the second direction are electrically connected to each other; and second ends of all the first electromagnetic touch channels close to the touch driver chip in the second direction are electrically connected to the touch driver chip via the switch selection circuit, and
the switch selection circuit independently turns on or off a connection between each of the first electromagnetic touch channels and the touch driver chip, so that any two first electromagnetic touch channels of all the first electromagnetic touch channels form into a closed electromagnetic coil through the switch selection circuit.