US 11,954,296 B2
Flexible capacitive tactile sensor and method for manufacturing same and tactile sensing system
Yuan Dai, Shenzhen (CN); Peng Lu, Shenzhen (CN); Zhengyou Zhang, Shenzhen (CN); and Chuanfei Guo, Shenzhen (CN)
Assigned to TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED, Shenzhen (CN)
Filed by TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED, Shenzhen (CN)
Filed on Feb. 17, 2022, as Appl. No. 17/673,948.
Application 17/673,948 is a continuation of application No. PCT/CN2020/126402, filed on Nov. 4, 2020.
Claims priority of application No. 202010068204.4 (CN), filed on Jan. 20, 2020.
Prior Publication US 2022/0171502 A1, Jun. 2, 2022
Int. Cl. G06F 3/044 (2006.01)
CPC G06F 3/0447 (2019.05) [G06F 3/0446 (2019.05)] 19 Claims
OG exemplary drawing
 
1. A flexible capacitive tactile sensor, comprising:
a first flexible electrode layer, on which a first electrode array is disposed, the first electrode array comprising m series-connected electrodes parallel to a second direction;
a second flexible electrode layer, on which a second electrode array is disposed, the second electrode array comprising n series-connected electrodes parallel to a first direction, the first electrode array and the second electrode array being disposed opposite to each other, and the first direction being different from the second direction; and
an ion gel thin film dielectric layer, disposed between the first flexible electrode layer and the second flexible electrode layer, the first electrode array, the second electrode array, and the ion gel thin film dielectric layer forming m×n electric double layer capacitors, each of the electric double layer capacitors working independently as a tactile sensor, and m and n being positive integers;
wherein a length of at least one of a plurality of electrodes of the first electrode array or the second electrode array in the first direction is a first length, and a length of the at least one electrode in the second direction is a second length,
a distance between the electrodes on the first electrode array connected in series in the second direction being less than the second length,
a distance between the electrodes on the second electrode array connected in series in the first direction being less than the first length,
a distance between the electrodes on the first electrode array in the first direction being a third length, and a distance between the electrodes on the second electrode array in the second direction being a fourth length, and
the first length, the second length, the third length, and the fourth length being less than 5 millimeters.