| CPC G06F 3/0445 (2019.05) [G06F 3/04144 (2019.05); G06F 3/0447 (2019.05); G06F 3/0412 (2013.01); G06F 3/0414 (2013.01); G06F 3/0446 (2019.05); G06F 2203/04104 (2013.01); G06F 2203/04105 (2013.01)] | 16 Claims |
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1. A three-dimensional touch sensor, comprising a first electrode layer and a second electrode layer disposed in different planes, wherein the second electrode layer is deformable in a direction opposite to the first electrode layer;
wherein the first electrode layer comprises:
a plurality of transmitting electrodes disposed in an array, wherein the adjacent transmitting electrodes electrically are connected to each other in a first direction;
a plurality of pressure sensing electrodes disposed in an array, wherein the adjacent pressure sensing electrodes are electrically connected to each other in the first direction, and the pressure sensing electrodes and the transmitting electrodes are distributed in a staggered manner and insulated from each other;
wherein the second electrode layer comprises:
a plurality of pressure receiving electrodes disposed in an array, wherein the adjacent pressure receiving electrodes are electrically connected to each other in a second direction, and the second direction is perpendicular to the first direction;
wherein the pressure receiving electrodes and the pressure sensing electrodes are aligned with respect to each other, and the pressure receiving electrodes and the transmitting electrodes are disposed in a staggered manner,
wherein the second electrode layer comprises a deformation supporting layer and a passivation layer, the deformation support layer is disposed between the first electrode layer and the passivation layer, and the pressure receiving electrodes are disposed in the passivation layer,
wherein a first spacer and a second spacer are further disposed in the deformation supporting layer, the first spacer is disposed between the transmitting electrodes and the pressure receiving electrodes, the second spacer is disposed between the pressure sensing electrodes and the pressure receiving electrodes, and a height of the second spacer is smaller than a height of the first spacer, the first spacer being used for maintaining a distance between the pressure receiving electrodes and the transmitting electrodes unchanged, and the second spacer being used for maintaining a certain gap between the pressure receiving electrodes and the pressure sensing electrodes.
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