公开(公告)号：US11965786B2

公开(公告)日：2024-04-23

申请号：US17838599

申请日：2022-06-13

Applicant: Futaba Corporation

Inventor： Satoshi Ide ,  Yuhi Taguchi

IPC: G01L1/14

CPC classification number: G01L1/14

Abstract: There is provided a capacitive pressure sensor comprising: a dielectric layer; a first electrode disposed on a first surface of the dielectric layer and to which a pressure is applied; a second electrode disposed on a second surface of the dielectric layer opposite to the first surface and including a plurality of unit electrodes having a predetermined shape; and a measuring device configured to detect a measurement value of a capacitance of the dielectric layer for each unit electrode by causing a potential difference between the first electrode and the second electrode. An electrode area of the unit electrode is determined using an actual measurement data indicating a relationship between a change amount of the measurement value detected for each unit electrode by the measuring device when a pressure is applied to the first electrode and the electrode area of the unit electrode and using a minimum value of the change amount of the measurement value determined by conditions including the number of detection steps of a pressure detected for each unit electrode by the measuring device.

公开(公告)号：US11157124B2

公开(公告)日：2021-10-26

申请号：US16984869

申请日：2020-08-04

Applicant: Futaba Corporation

Inventor： Tsubasa Mitsuhashi ,  Toshimitsu Fuyuki ,  Yuichi Tabata ,  Yuhi Taguchi

IPC: G06F3/044 ,  G06F3/047

Abstract: A touch panel device includes: a plurality of detection regions arranged in a matrix form; and a transmission wiring element and a receiving wiring element formed for each detection region, wherein a transmission wiring arrangement region with the transmission wiring element, the plurality of detection regions, and a receiving wiring arrangement region with the receiving wiring element are formed being aligned in one direction, wherein a value calculated from a formula as follows is smaller than a target value for a coordinate position precision: AW+2*BW−TC, wherein BW is an interval width from one of the detection regions to a next of the detection regions via the receiving wiring arrangement region and the transmission wiring arrangement region in the one direction, AW is a width for the detection regions in the one direction, and TC is a touch diameter.