Touch responsive control panel

• US 5,610,380 A
• Filed: 07/28/1994
• Issued: 03/11/1997
• Est. Priority Date: 01/28/1992
• Status: Expired due to Term

• Current Assignee: Touchsensor Technologies LLC (Methode Electronics Incorporated)
• Original Assignee: Mogens Nicolaisen
• Inventors: Nicolaisen, Mogens
• Primary Examiner(s): SCOTT, JAMES R
• Application Number:
  US08/256,859
• Time in Patent Office: 957 Days
• Field of Search: 200/600, 200/5 A, 200/52 R, 361/680-682, 341/22, 341/33, 341/34, 307/116
• US Class Current: 200/600
• CPC Class Codes: H03K 17/962 Capacitive touch switches
• CPC Class Codes: H05K 1/16 incorporating printed electric components, e.g. printed resistor, capacitor, inductor

Abstract

A touch sensitive control panel in accordance with the invention includes a plate having a front side and a back side. The front side has at least one marking identifying at least one corresponding touch sensitive area of the plate. Each touch sensitive area when touched by a user completes an operative coupling with one of a plurality of electrodes of at least one electronic circuit disposed on the back side to cause the production of a selected control signal by the at least one electronic circuit to which the operative coupling is completed by touching one touch sensitive area of the front side. The at least one electronic circuit and the plurality of electrodes are held in surface contact with the back side without the use of an intermediate plate.

Claims

1. A touch sensitive control panel comprising:

a plate having a front side and a back side, the front side having at least one marking identifying at least one touch sensitive area of the plate and a conductive layer disposed on the back side being in registration with each touch sensitive area and, each touch sensitive area when touched by a user completing an operative coupling with the conductive layer in registration therewith and one of a plurality of electrodes of at least one electronic circuit disposed on the back side to cause a selected control signal to be produced by the at least one electronic circuit to which the operative coupling is completed by touching one touch sensitive area of the front side; and

wherein

the at least one electronic circuit, each conductive layer and the plurality of electrodes are in direct surface contact with the back side.

2. A touch sensitive control plate in accordance with claim 1 wherein:

the plate is a dielectric material.

3. A touch sensitive control plate in accordance with claim 2 wherein:

the dielectric plate is glass.

4. A touch sensitive control plate in accordance with claim 1 wherein:

the at least one electronic circuit is held on the back side by surface mounting.

5. A touch sensitive control plate in accordance with claim 1 wherein:

the at least one electronic component is held on the back side by cementing.

6. A touch sensitive control plate in accordance with claim 1 wherein:

the at least one electronic component is held on the back side by casting.

7. A touch sensitive control plate in accordance with claim 2 wherein:

the at least one electronic circuit is held on the back side by surface mounting.

8. A touch sensitive control plate in accordance with claim 2 wherein:

the at least one electronic component is held on the back side by cementing.

9. A touch sensitive control plate in accordance with claim 2 wherein:

the at least one electronic component is held on the back side by casting.

10. A touch sensitive control plate in accordance with claim 3 wherein:

the at least one electronic circuit is held on the back side by surface mounting.

11. A touch sensitive control plate in accordance with claim 3 wherein:

the at least one electronic component is held on the back side by cementing.

12. A touch sensitive control plate in accordance with claim 3 wherein:

the at least one electronic component is held on the back side by casting.

13. A touch sensitive control panel in accordance with claim 1 further comprising:

at least one conductive strip disposed on the back side, each conductive strip providing an electrical connection between one of the electrodes and one of the at least one electronic circuit.

14. A touch sensitive control panel in accordance with claim 2 further comprising:

at least one conductive strip disposed on the back side, each conductive strip providing an electrical connection between one of the electrodes and one of the at least one electronic circuit.

15. A touch sensitive control panel in accordance with claim 3 further comprising:

at least one conductive strip disposed on the back side, each conductive strip providing an electrical connection between one of the electrodes and one of the at least one electronic circuit.

16. A touch sensitive control panel in accordance with claim 1 further comprising:

at least one conductive shielding area disposed on the back side, each conductive shielding area being disposed at least in part between at least one electronic circuit and the front sides.

17. A touch sensitive control panel in accordance with claim 2 further comprising:

at least one conductive shielding area disposed on the back side, each conductive shielding area being disposed at least in part between at least one electronic circuit and the front sides.

18. A touch sensitive control panel in accordance with claim 3 further comprising:

at least one conductive shielding area disposed on the back side, each conductive shielding area being disposed at least in part between at least one electronic circuit and the front sides.

19. A touch sensitive control panel in accordance with claim 1 wherein:

at least one of the at least one electronic circuits produces an acknowledgment of touching one of the touch sensitive areas.

20. A touch sensitive control panel in accordance with claim 2 wherein:

at least one of the at least one electronic circuits produces an acknowledgment of touching one of the touch sensitive areas.

21. A touch sensitive control panel in accordance with claim 3 wherein:

at least one of the at least one electronic circuits produces an acknowledgment of touching one of the touch sensitive areas.