公开(公告)号：US20230081114A1

公开(公告)日：2023-03-16

申请号：US17897442

申请日：2022-08-29

Applicant: Futaba Corporation

Inventor： Satoshi IDE ,  Keisuke TAKATA ,  Fumitaka MIYAO ,  Kazuki IMAJO

IPC: G01L1/14 ,  G06F3/044

Abstract: A capacitive pressure sensor (1) using mutual capacitance type is provided. The capacitive pressure sensor (1) comprises a dielectric layer (2), a ground electrode (3), transmission electrodes (4), reception electrodes (5) and a controller (6). The transmission electrodes and reception electrodes have a matrix structure (FIG. 3). An electric field is generated between the transmission electrodes and the reception electrodes by the controller. When the dielectric layer is deformed by a pressure applied to the ground electrode, a capacitance of the dielectric layer changes. The controller detects the unit detection area (10) where the capacitance changes and the pressure corresponding to the change in the capacitance.

公开(公告)号：US20220397466A1

公开(公告)日：2022-12-15

申请号：US17838599

申请日：2022-06-13

Applicant: Futaba Corporation

Inventor： Satoshi IDE ,  Yuhi TAGUCHI

IPC: 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：US20220397467A1

公开(公告)日：2022-12-15

申请号：US17839537

申请日：2022-06-14

Applicant: FUTABA CORPORATION

Inventor： Satoshi IDE ,  Yuhi TAGUCHI

IPC: G01L1/14 ,  G06F3/044

Abstract: A capacitive pressure sensor is provided. The capacitive pressure sensor comprises a dielectric layer, a light-transmitting first electrode, a second electrode, a display layer and a measuring device. The dielectric layer is made of a foam. The first electrode is disposed on a first surface of the dielectric layer, wherein a pressure is applied to the first electrode. The second electrode is disposed on a second surface of the dielectric layer opposite to the first surface. The second electrode includes a plurality of unit electrodes having a predetermined shape. The display layer is disposed between the first electrode and the dielectric layer or between the second electrode and the dielectric layer. The measuring device is 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.