US 12,307,041 B2
Touch panel
Hui Hua, Beijing (CN); Yuju Chen, Beijing (CN); and Yingzi Wang, Beijing (CN)
Assigned to BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 18/246,611
Filed by BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Apr. 27, 2022, PCT No. PCT/CN2022/089462
§ 371(c)(1), (2) Date Mar. 24, 2023,
PCT Pub. No. WO2023/206117, PCT Pub. Date Nov. 2, 2023.
Prior Publication US 2024/0302917 A1, Sep. 12, 2024
Int. Cl. G06F 3/041 (2006.01); G06F 3/01 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/04164 (2019.05) [G06F 3/016 (2013.01); G06F 3/04146 (2019.05); G06F 3/0445 (2019.05); G06F 3/0446 (2019.05); G06F 3/0448 (2019.05)] 17 Claims
OG exemplary drawing
 
1. A touch panel, comprising a control substrate, a touch layer and a piezoelectric layer that are stacked,
wherein the control substrate comprises a first substrate and a control circuit layer arranged on the first substrate, and the touch layer and the piezoelectric layer are located on the control substrate,
the control circuit layer comprises a control circuit, and the control circuit is electrically connected with the touch layer and the piezoelectric layer respectively, and is configured to apply electrical signals to the touch layer and the piezoelectric layer and/or receive electrical signals from the touch layer and the piezoelectric layer respectively,
wherein the touch panel further comprises a second substrate, wherein the touch layer and the piezoelectric layer are arranged on the second substrate, and
the second substrate, the touch layer and the piezoelectric layer are arranged as a whole on a side of the control circuit layer away from the first substrate,
wherein the touch layer and the piezoelectric layer are respectively arranged on a same side of the second substrate, and
the touch panel further comprises an electromagnetic shielding layer arranged between the touch layer and the piezoelectric layer,
wherein the touch layer is arranged on a side of the piezoelectric layer away from the control substrate,
the touch panel further comprises a cover plate on a surface of the touch layer away from the control substrate, and a surface of the cover plate away from the control substrate becomes a touch surface of the touch panel,
wherein the electromagnetic shielding layer is grounded or be applied with a fixed low-level voltage, and the touch panel further includes an interval insulating layer arranged between the electromagnetic shielding layer and the piezoelectric layer.