TOUCH SCREEN COUPLING HAVING TACTILE RESPONSE CAPABILITY

• US 20110234527A1
• Filed: 03/24/2010
• Published: 09/29/2011
• Est. Priority Date: 03/24/2010
• Status: Active Grant

• Current Assignee: Whirlpool Corporation
• Original Assignee: Whirlpool Corporation
• Inventors: LEAR, CRAIG C., MUTSCHLER, JESS E., BORGES, JOAO EDUARDO SANTANA, ZIMMERMANN, CESARIO, SETUBAL, PHABIO JUNCKES, BURCHILL, MELISSA J.
• Granted Patent: US 8,416,214 B2
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: D06F 34/32 characterised by graphical features, e.g. touchscreens
• CPC Class Codes: H03K 17/962 Capacitive touch switches
• CPC Class Codes: H03K 2217/960755 Constructional details of capacitive touch and proximity switches

Abstract

The presently described technology relates to an appliance control panel system having a control panel interface comprising at least one capacitive touch key, and a circuit board assembly comprising at least one input receiver pad. The control panel interface and the circuit board assembly are not in direct contact with each other. The input receiver pad can be comprised of a conductive material. Certain embodiments also provide a control panel having at least one conductive extender. The extender can be situated between the control panel interface and the circuit board assembly. The capacitive touch key is in electrical connection with the input receiver pad. An method for controlling an appliance with a control panel is also disclosed.

Claims

1. An appliance control panel system comprising:

a control panel interface comprising at least one capacitive touch key;

a circuit board assembly comprising at least one input receiver pad, said at least one input receiver pad comprising at least one conductive material; and

at least one conductive extender;

wherein said control panel interface is not in direct contact with said circuit board assembly, said conductive extender is situated between said control panel interface and said circuit board assembly, and said at least one capacitive touch key is in electrical connection with said at least one input receiver pad.

2. The appliance control panel system of claim 1, wherein said receiver pad surface is adaptable for installation of a tactile switch pad.

3. The appliance control panel system of claim 2, wherein said receiver pad surface comprises at least one tactile switch connector for connection to a tactile switch.

4. The appliance control panel system of claim 1, wherein said conductive extender comprises at least one foam block and at least one conductive band on at least a portion of the exterior surface of said foam pad.

5. The appliance control panel system of claim 4, wherein said conductive band surrounds at least 4 contingent sides of said foam block.

6. The appliance control panel system of claim 5, wherein at least one surface of said conductive extender is in contact with said control panel interface surface, and at least one surface of said conductive extender is in contact with said receiver pad surface.

7. The appliance control panel system of claim 1, wherein the receiver pad is comprised of a metal material.

8. The appliance control panel system of claim 7, wherein the receiver pad is comprised of copper.

9. The appliance control panel system of claim 1, wherein the receiver pad is rectangular in shape.

10. The appliance control panel system of claim 9, wherein the corners of the receiver pad are rounded.

11. The appliance control panel system of claim 1, wherein the interface surface is comprised of a plastic material.

12. The appliance control panel system of claim 1, wherein said conductive extender transmits a signal to said at least one receiver pad when a finger touches said capacitive touch key.

13. The appliance control panel system of claim 1, wherein the signal to noise ratio of the system is at least about 6 to 1.

14. The appliance control panel system of claim 13, wherein the signal to noise ratio of the system is at least about 8 to 1.

15. A printed circuit board assembly adaptable for use with each of a capacitive touch control panel and a tactile touch panel comprising:

a printed circuit board;

a receptor panel electrically connected to said printed circuit board, said receptor panel comprising at least one receiver pad, said receiving pad comprising at least one conductive surface and at least one tactile switch connector.

16. The printed circuit board assembly of claim 15, wherein said tactile switch connector comprises at least two soldering pads.

17. The printed circuit board assembly of claim 15, further comprising a tactile switch electrically connected to said receiving pad.

18. The printed circuit board assembly of claim 15, wherein said receiving pad has a surface adapted for electrical connection to a conductive extender, wherein said conductive extender is comprised of at least one foam block surrounded by at least one conductive band.

19. A method for controlling an appliance comprising:

providing a control panel having a control panel interface comprising at least one tactile key;

providing a circuit board assembly comprising at least one input receiver pad, said at least one input receiver pad comprising at least one conductive material; and

providing at least one tactile extender;

wherein said control panel interface is not in direct contact with said circuit board assembly, said tactile extender is positioned between said control panel interface and said circuit board assembly, and said at least one tactile key is in mechanical connection with said at least one input receiver pad.

20. The method for controlling an appliance of claim 19, wherein said input receiver pad comprises a tactile switch, said tactile extender configured to activate said tactile switch when a user presses said tactile key.