Tactile surface

• US 8,760,413 B2
• Filed: 10/15/2009
• Issued: 06/24/2014
• Est. Priority Date: 01/08/2009
• Status: Active Grant

• Current Assignee: Synaptics Incorporated
• Original Assignee: Synaptics Incorporated
• Inventors: Peterson, Cody George, Krumpelman, Douglas M., Huska, Andrew P.
• Primary Examiner(s): Beck, Alexander S
• Assistant Examiner(s): BOGALE, AMEN W
• Application Number:
  US12/580,002
• Publication Number:
  US 20100171715A1
• Time in Patent Office: 1,713 Days
• Field of Search: 345/173, 345/174, 345/161, 341/22, 341/23, 341/27, 341/33, 341/34, 715/701, 715/702, 200/600
• US Class Current: 345/173
• CPC Class Codes: G06F 3/016 Input arrangements with force or tactile feedback as computer generated output to the user
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: H01H 13/85 characterised by tactile feedback features
• CPC Class Codes: H01H 2003/008 with a haptic or a tactile feedback controlled by electrical means, e.g. a motor or magnetofriction
• CPC Class Codes: H01H 2215/05 electromechanical

Abstract

In one or more embodiments, a device includes a surface and an actuator mechanism operably associated with the surface. The actuator mechanism is configured to provide tactile feedback to a user responsive to an electrical signal. In at least some embodiments, the actuator mechanism comprises a pair of spaced-apart substrates each of which supports a conductive layer of material. A dielectric material and an adjacent air gap may be interposed between the substrates. Drive circuitry is operably connected to the spaced-apart substrates and is configured to drive the conductive layers of material with an electrical signal. This signal may be responsive to sensing a touch input on the surface or other appropriate event.

Claims

1. A device comprising:

a housing;

a surface responsive to user engagement, the surface supported by the housing;

an actuator mechanism operably associated with the surface, the actuator mechanism comprising a pair of conductive layers maintained in a spaced-apart configuration by a peripheral spring mechanism disposed between the pair of conductive layers defining an air space between the pair of conductive layers, one of the pair of conductive layers associated with the surface and operable to move relative to the other conductive layer; and

drive circuitry configured to drive the conductive layers with an electrical signal that increases an attractive force between the conductive layers, the electrical signal applied in response to an engagement provided by the user at the surface, the attractive force causing movement of at least one of the conductive layers relative to the other of the conductive layers, the movement causing a compression of the peripheral spring mechanism reducing the air space between the pair of conductive layers thereby providing tactile feedback to the user.

2. The device of claim 1, further comprising a solid dielectric material interposed between the pair of spaced-apart conductive layers.

3. The device of claim 1, wherein the surface comprises a touch sensitive surface.

4. The device of claim 1, wherein the surface comprises a touch screen.

5. The device of claim 1, wherein the surface comprises a touch pad.

6. The device of claim 1, wherein the surface comprises a keyboard.

7. The device of claim 1, wherein the surface comprises a touch sensitive control panel.

8. The device of claim 1, further comprising a display operably adjacent one of the spaced-apart conductive layers.

9. The device of claim 1, wherein the device comprises a hand-held device.

10. The device of claim 1, wherein the device is configured for use in a vehicle.

11. The device of claim 1, wherein the peripheral spring mechanism is configured to decompress upon a change in the electrical signal that decreases the attraction between the pair of conductive layers, the decompression causing at least one of the conductive layers to move away from the other of the conductive layers and restore the air space between the pair of conductive layers.

12. The device of claim 1, wherein the conductive layers are disposed upon spaced-apart clear material substrates.

13. The device of claim 1, wherein each conductive layer comprises indium tin oxide.

14. The device of claim 2, wherein the dielectric material comprises glass or plastic.

15. The device of claim 1, wherein the drive circuitry is configured to utilize different drive profiles.

16. A material assembly comprising:

a surface responsive to user engagement provided with a first conductive layer;

a second conductive layer operably associated with the first conductive layer;

a peripheral spring mechanism interposed between the first and second conductive layers defining an air space between the first and second conductive layers;

wherein at least one of the first or second conductive layers is configured to be driven toward the other conductive layer when an electrical signal is applied to at least one of the first or second conductive layers to cause movement of the first conductive layer relative to the second conductive layer, the movement causing a compression of the peripheral spring mechanism reducing the air space between the first and second conductive layers thereby providing tactile feedback to a user.

17. The material assembly of claim 16, further comprising a solid dielectric material interposed between the first and second conductive layers.

18. The material assembly of claim 16, wherein the material assembly is configured to form part of a hand-held device.

19. The material assembly of claim 16, wherein the first and second conductive layers are disposed upon first and second substrates comprising a clear material.

20. The material assembly of claim 16, wherein the peripheral spring mechanism is configured to decompress upon a change in the electrical signal that decreases the attraction between the conductive layers, the decompression causing the first conductive layer to move away from the second conductive layer and restore the air space between the conductive layers.

21. The material assembly of claim 16, wherein at least one conductive layer is disposed on a substrate composed of a non-conductive material.

22. The material assembly of claim 21, wherein the at least one conductive layer comprises a clear conductive material.

23. The material assembly of claim 21, wherein the at least one conductive comprises indium tin oxide.

24. The material assembly of claim 17, wherein the dielectric material comprises glass or plastic.

25. The material assembly of claim 16 further comprising a housing supporting the material assembly.

26. The material assembly of claim 16 further comprising a housing supporting the material assembly, wherein the housing defines a hand-held device.

27. The material assembly of claim 16, wherein surface responsive to user engagement comprises a touch screen.

28. The material assembly of claim 16, wherein surface responsive to user engagement comprises a touchpad.

29. The material assembly of claim 16, wherein surface responsive to user engagement comprises a key on a keyboard.

30. The material assembly of claim 16, wherein surface responsive to user engagement comprises a touch sensitive control panel.

31. The material assembly of claim 16, wherein surface responsive to user engagement comprises a knob.

32. A method comprising:

sensing a user input at a surface responsive to user engagement, the surface associated with a first conductive layer;

responsive to sensing the user input, applying an electrical signal to increase an attractive force between the first conductive layer and a second conductive layer, the first and second conductive layers separated by a peripheral spring mechanism disposed between the pair of conductive layers defining an air space between the first and second conductive layers, the attractive force causing movement of at least one of the conductive layers relative to the other of the conductive layers, the movement causing a compression of the peripheral spring mechanism reducing the air space between the first and second conductive layers thereby providing tactile feedback to the user responsive to said sensing.

33. The method of claim 32 further comprising after said sensing and before said applying, ascertaining an input location associated with the user input.

34. The method of claim 32 further comprising:

after said sensing and before said applying, ascertaining an input location associated with the user input; and

ascertaining a user interface element associated with the input location.

35. The method of claim 32 further comprising:

after said sensing and before said applying, ascertaining an input location associated with the user input;

ascertaining a user interface element associated with the input location; and

responsive to ascertaining the user interface element, selecting an electrical signal profile associated with the user interface element, wherein applying the electrical signal comprises applying the electrical signal profile.

36. The method of claim 32, wherein the device comprises a hand-held device.