US 11,989,370 B2
Electrostatic input device
Hiroshi Shigetaka, Fukushima (JP)
Assigned to ALPS ALPINE CO., LTD., Tokyo (JP)
Filed by ALPS ALPINE CO., LTD., Tokyo (JP)
Filed on Feb. 22, 2023, as Appl. No. 18/172,475.
Application 18/172,475 is a continuation of application No. PCT/JP2021/032307, filed on Sep. 2, 2021.
Claims priority of application No. 2020-167755 (JP), filed on Oct. 2, 2020.
Prior Publication US 2023/0195261 A1, Jun. 22, 2023
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/0418 (2013.01) [G06F 3/04164 (2019.05); G06F 3/044 (2013.01); G06F 2203/04107 (2013.01); G06F 2203/04108 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electrostatic input device, comprising:
a plurality of first detection electrodes that are configured to detect approach of an object within a first distance from a detection face;
a second detection electrode that is provided between the plurality of first detection electrodes and configured to detect approach of an object within a second distance from the detection face, where the second distance is longer than the first distance;
a detection circuit that is configured to detect change in capacitance of the plurality of first detection electrodes and the second detection electrode;
a plurality of first interconnects that respectively electrically connect the plurality of first detection electrodes and the detection circuit to each other; and
a plurality of first noise cancelling interconnects that are same in number as the plurality of first interconnects,
wherein the plurality of first noise cancelling interconnects are electrically connected to the detection circuit, and are respectively configured to obtain noise having a same phase as noise respectively obtained by the plurality of first interconnects.