Pressure detecting sensor

Patent metadata

Field	Value
Publication number	US-10955282-B2
Application number	US-201716095428-A
Country	US
Kind code	B2
Filing date	Apr 20, 2017
Priority date	Apr 22, 2016
Publication date	Mar 23, 2021
Grant date	Mar 23, 2021

Abstract

A pressure detecting sensor according to an embodiment of the present invention comprises: a first electrode layer including a plurality of signal electrodes arranged in a first region and a plurality of wiring electrodes arranged in a second region and connected to the plurality of signal electrodes, the first electrode layer being made of a conductive fiber; an elastic dielectric layer arranged in the first region; and a second electrode layer arranged in the elastic dielectric layer, the second electrode layer being made of a conductive fiber.

First claim

The invention claimed is:

1. A pressure detecting sensor comprising:
a first electrode layer which is formed of conductive fibers and comprises a plurality of signal electrodes arranged in a first region, and a plurality of wiring electrodes arranged in a second region and connected to the plurality of signal electrodes;
an elastic dielectric layer disposed in the first region;
a second electrode layer disposed on the elastic dielectric layer and formed of conductive fibers; and
an insulating layer disposed below the first electrode layer.

2. The pressure detecting sensor of claim 1 , further comprising a supporting material disposed in the second region.

3. The pressure detecting sensor of claim 2 , wherein the supporting material is disposed on a side surface of the elastic dielectric layer above the plurality of wiring electrodes, and
wherein hardness of the supporting material is greater than hardness of the elastic dielectric layer.

4. The pressure detecting sensor of claim 2 , wherein the plurality of wiring electrodes are embedded in the supporting material.

5. The pressure detecting sensor of claim 1 , wherein the plurality of signal electrodes and the plurality of wiring electrodes are bent from each other.

6. The pressure detecting sensor of claim 1 , wherein the second electrode layer is connected to a ground.

7. The pressure detecting sensor of claim 6 , wherein patterns matched with an alignment of the plurality of signal electrodes are formed on the second electrode layer.

8. The pressure detecting sensor of claim 7 , wherein the second electrode layer is formed to be not separated by the patterns.

9. The pressure detecting sensor of claim 1 , further comprising a signal transmission portion connected to the first electrode layer and the second electrode layer,
wherein the signal transmission portion comprises:
a first metal electrode connected to the first electrode layer;
a second metal electrode connected to the second electrode layer; and
an insulating layer disposed between the first metal electrode and the second metal electrode, and
wherein at least one of the first metal electrode and the second metal electrode has a mesh structure.

10. The pressure detecting sensor of claim 9 , wherein the first electrode layer comprises the plurality of signal electrodes spaced at certain intervals apart,
wherein the second electrode layer is connected to a ground, and
wherein the second metal electrode has a mesh structure.

11. The pressure detecting sensor of claim 10 , wherein the second metal electrode comprises copper.

12. The pressure detecting sensor of claim 9 , wherein the signal transmission portion comprises a flexible printed circuit board (FPCB).

13. The pressure detecting sensor of claim 12 , wherein the mesh structure is formed overall on one of both surfaces of the FPCB.

14. A pressure detecting device comprising:
a pressure detecting sensor;
a signal processing portion connected to the pressure detecting sensor and configured to process an electrical signal generated by the pressure detecting sensor; and
a control portion connected to the signal processing portion and configured to generate a control signal on the basis of the signal processed by the signal processing portion,
wherein the pressure detecting sensor comprises:
a first electrode layer which is formed of conductive fibers and comprises a plurality of signal electrodes arranged in a first region and a plurality of wiring electrodes arranged in a second region and connected to the plurality of signal electrodes;
an elastic dielectric layer disposed in the first region;
a second electrode layer disposed on the elastic dielectric layer and formed of conductive fibers; and
an insulating layer disposed below the first electrode layer.

Assignees

• Lg Innotek Co Ltd

Inventors

• Choi Man Hue
• Kim Bi Yi
• Kim Ji Hye
• Park Yong Hwa
• Park Hyun Gyu
• Yoon Hyung

Classifications

• G01L9/12 Primary

  by making use of variations in capacitance {, i.e. electric circuits therefor} · CPC title

• G01G7/06

  by electrostatic action · CPC title

• G01G19/44

  for weighing persons · CPC title

• G01L9/08

  by making use of piezoelectric devices {, i.e. electric circuits therefor} · CPC title

• G01G19/413

  using electromechanical or electronic computing means · CPC title