# US 2024/0201411 A1 · Capacitance sensor and capacitance sensor manufacturing method

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- Number: US 2024/0201411 A1
- Document ID: US20240201411A1
- Status: Published application
- Kind: A1
- Application number: 18/539,523
- Filed: 2023-12-14
- Published: 2024-06-20
- Earliest claimed: 2022-12-16
- Assignees: Honda Motor Co., Ltd.; The University of British Columbia
- Applicants: Honda Motor Co., Ltd.; The University of British Columbia
- Inventors: Ryusuke Ishizaki; Fumiya Hamatsu; John D W Madden; Kieran Morton; Austin Weir; Mirza Saquib Sarwar
- Web page: https://patentgrep.com/patent/US20240201411A1

## CPC

- G01V 3/088: {operating with electric fields (G01V3/082 takes precedence)}
- G01V 3/08: operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices (with electromagnetic waves G01V3/12)
- G01V: GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS (means for indicating the location of accidentally buried, e.g. snow-buried, persons A63B29/02)

## Abstract

A capacitance sensor made of a plurality of layers includes: a first layer including a first electrode; and a second layer including a second electrode and arranged to face the first layer, wherein at least one of the first layer and the second layer is an elastomer layer which is a dielectric and is made of an elastically deformable elastomer, and the elastomer layer is bonded by an adhesion layer formed by applying an elastomer in a pre-curing state that is a material identical to the first layer or the second layer and curing the elastomer.

## Claims

### Claim 1

A capacitance sensor made of a plurality of layers, the capacitance sensor comprising:
a first layer including a first electrode; and
a second layer including a second electrode and arranged to face the first layer,
wherein at least one of the first layer and the second layer is an elastomer layer which is a dielectric and is made of an elastically deformable elastomer, and
the elastomer layer is bonded by an adhesion layer formed by applying an elastomer in a pre-curing state that is a material identical to the first layer or the second layer and curing the elastomer.

### Claim 2 (depends on 1)

The capacitance sensor according to claim 1, including
between the first layer and the second layer, a plurality of pillars extending in a lamination direction, in which the first layer and the second layer face each other, and arranged to be spaced from each other in a direction intersecting the lamination direction,
wherein the pillars are bonded by the adhesion layer, which is a material made of an elastomer identical to the first layer or the second layer.

### Claim 3 (depends on 2)

The capacitance sensor according to claim 2,
wherein the pillar is integrally formed with at least one of the first layer and the second layer.

### Claim 4

A capacitance sensor manufacturing method of a capacitance sensor made of a plurality of layers and comprising: a first layer including a first electrode; and a second layer including a second electrode arranged to face the first layer, the capacitance sensor manufacturing method including:
a preparation step in which an elastomer layer that is a dielectric and is made of an elastically deformable elastomer is formed as at least one of the first layer and the second layer; and
a bonding step in which an elastomer in a pre-curing state that is a material identical to the first layer or the second layer is applied and then cured, and an adhesion layer that bonds the elastomer layer is formed.

### Claim 5 (depends on 4)

The capacitance sensor manufacturing method according to claim 4,
wherein a plurality of pillars that extend in a lamination direction in which the first layer and the second layer face each other, are arranged to be spaced from each other in a direction intersecting the lamination direction, and are a material identical to the first layer or the second layer are provided between the first layer and the second layer, and
in the bonding step, the pillars are bonded by the adhesion layer.