US 11,906,834 B2
Touch panel with different density of electrodes in the edge area and display device
Dongchen Huang, Guangdong (CN); and Chingyuan Cheng, Guangdong (CN)
Assigned to HUIZHOU CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
Appl. No. 16/962,520
Filed by HUIZHOU CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
PCT Filed May 20, 2020, PCT No. PCT/CN2020/091205
§ 371(c)(1), (2) Date Jul. 16, 2020,
PCT Pub. No. WO2021/227101, PCT Pub. Date Nov. 18, 2021.
Claims priority of application No. 202010387077.4 (CN), filed on May 9, 2020.
Prior Publication US 2023/0111303 A1, Apr. 13, 2023
Int. Cl. G02F 1/13 (2006.01); G02F 1/1333 (2006.01); G06F 3/044 (2006.01); G06F 3/041 (2006.01)
CPC G02F 1/13338 (2013.01) [G06F 3/0412 (2013.01); G06F 3/0445 (2019.05); G06F 3/0446 (2019.05); G06F 2203/04111 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A touch panel, wherein the touch panel comprises a first area including a central area of the touch panel and a second area surrounding the first area, and further comprises touch electrodes for touch detection, and the touch electrodes comprises:
a plurality of first electrodes, wherein the plurality of first electrodes are located in the first area, and the plurality of first electrodes are arranged in parallel; and
a plurality of second electrodes, wherein the plurality of second electrodes are located in the second area, the plurality of second electrodes are arranged in parallel, an arrangement density of the plurality of first electrodes is greater than an arrangement density of the plurality of second electrodes, each of the plurality of first electrodes and each of the plurality of second electrodes have the same size, a first gap is provided between the two adjacent first electrodes of the plurality of first electrodes, a second gap is provided between the two adjacent second electrodes of the plurality of second electrodes, and a width of the first gap is smaller than a width of the second gap,
wherein a width of the second gap away from the first area is larger than a width of the second gap close to the first area, a width of the first gap close to the second area is larger than a width of the first gap away from the second area, or each of the first gaps has the same width,
wherein the touch electrodes further comprises a plurality of third electrodes, the plurality of third electrodes are located in the first area, the plurality of third electrodes intersect with the plurality of first electrodes, and the plurality of third electrodes are insulated from the plurality of first electrodes, and
wherein an arrangement density of the plurality of third electrodes is equal to the arrangement density of the plurality of first electrodes.