Pressure-sensitive resistance element

• US 4,996,511 A
• Filed: 05/04/1989
• Issued: 02/26/1991
• Est. Priority Date: 05/09/1988
• Status: Expired due to Term

• Current Assignee: Toshiba Silicone Co., Ltd. (General Electric Company)
• Original Assignee: Toshiba Silicone Co., Ltd. (General Electric Company)
• Inventors: Ohkawa, Kazuhiro, Yamazaki, Taro
• Primary Examiner(s): Reynolds, Bruce A.
• Assistant Examiner(s): Lateef, Marvin M.
• Application Number:
  US07/347,088
• Time in Patent Office: 663 Days
• Field of Search: 338/114, 338/99, 338/71
• US Class Current: 338/114
• CPC Class Codes: G01L 1/205 using distributed sensing elements
• CPC Class Codes: H01C 10/10 adjustable by mechanical pressure or force

Abstract

A pressure-sensitive resistance element comprising a first contact electrode formed on a first electrically insulating base plate, a second contact electrode formed on a second electrically insulating base plate disposed facing the first contact electrode, a first and/or a second pressure-sensitive electrically conductive layer formed on the whole surface of at least one of the first and second contact electrode regions, and a first and/or second pressure-sensitive electrically conduct pattern formed on at least one of the pressure-sensitive electrically conductive layer and the contact electrode having no pressure-sensitive electrically conductive layer thereon.

Claims

1. A pressure-sensitive resistance element comprising a first contact electrode formed on a first electrically insulating base plate, a second contact electrode formed on a second electrically insulating base plate disposed facing the first contact electrode, a pressure-sensitive electrically conductive layer formed on the whole surface of at least one of the first and second contact electrode regions, and a pressure-sensitive electrically conductive pattern formed on at least one of the pressure-sensitive electrically conductive layers or the pressure-sensitive electrically conductive layer and the contact electrode having no pressure-sensitive electrically conductive layer thereon.

2. The pressure-sensitive resistance element as claimed in claim 1, wherein the form of the pressure-sensitive electrically conductive pattern is a stripe, lattice or dot.

3. The pressure-sensitive resistance element as claimed in claim 1, wherein a stripe-form pressure-sensitive electrically conductive pattern is formed on the first contact electrode or the first pressure-sensitive electrically conductive layer and a stripe-form pressure-sensitive electrically conductive pattern is formed on the second contact electrode or the second pressure-sensitive electrically conductive layer, said patterns being disposed such that they are in a crossing relation with each other at a right angle.

4. The pressure-sensitive resistance element as claimed in claim 1, wherein the form of the pressure-sensitive electrically conductive pattern is a plurality of stripes.

5. The pressure-sensitive resistance element as claimed in claim 4, wherein said stripes have a line width of from 0.05 mm to 3 mm, the distance between the stripes is from 0.1 mm to 50 mm and the thickness of the stripes if from 5 μ

m to 100 μ

m.

6. The pressure-sensitive resistance element as claimed in claim 1, wherein the form of the pressure-sensitive electrically conductive pattern is a plurality of dots.

7. The pressure-sensitive resistance element as claimed in claim 6, wherein the diameter of the dots is from 0.05 mm to 3 mm, the distance between dots is from 0.1 mm to 50 mm and the thickness of the dots is from 5 μ

m to 100 μ

m.

8. The pressure-sensitive resistance element as claimed in claim 1, wherein the form of the pressure-sensitive electrically conductive pattern is a lattice.

9. The pressure-sensitive resistance element as claimed in claim 8, wherein the lattice has a line width of from 0.05 mm to 3 mm, the distance between lattice lines is from 0.1 mm to 50 mm and the thickness of the lattice is from 5 μ

m to 100 μ

m.

10. The pressure-sensitive resistance element as claimed in claim 1, wherein the first contact electrode ha a pressure-sensitive electrically conductive layer which as a stripe-form pressure-sensitive electrically conductive pattern thereon and the second contact electrode has a stripe-form electrically conductive pattern thereon, which stripe-form electrically conductive patterns are disposed such that they are in a crossing relation with each other at a right angle.

11. The pressure-sensitive resistance element as claimed in claim 1, wherein the first contact electrode has one pressure-sensitive electrically conductive layer thereon without a pressure-sensitive electrically conductive pattern and the second contact electrode has a stripe-form pressure-sensitive electrically conductive pattern thereon.

12. The pressure-sensitive resistance element as claimed in claim 1, wherein the first contact electrode has a pressure-sensitive electrically conductive layer thereon without a pressure-sensitive electrically conductive pattern thereon and the second contact electrode has a lattice-form pressure-sensitive electrically conductive pattern thereon.

13. The pressure-sensitive resistance element as claimed in claim 1, wherein the first contact electrode has a pressure-sensitive electrically conductive layer thereon without a pressure-sensitive electrically conductive pattern thereon and the second contact electrode has a dot-form pressure-sensitive electrically conductive pattern thereon.