Backlit haptic key

• US 8,542,133 B2
• Filed: 11/10/2011
• Issued: 09/24/2013
• Est. Priority Date: 07/06/2007
• Status: Active Grant

• Current Assignee: Synaptics Incorporated
• Original Assignee: Synaptics Incorporated
• Inventors: Peterson, Cody George, Huska, Andrew Parris, Schlosser, James William
• Primary Examiner(s): Warren, David S.
• Application Number:
  US13/293,120
• Publication Number:
  US 20130015985A1
• Time in Patent Office: 684 Days
• Field of Search: 341 22- 34, 345156-157, 846/15, 846/53
• US Class Current: 341/27
• CPC Class Codes: G06F 3/016 Input arrangements with force or tactile feedback as computer generated output to the user
• CPC Class Codes: G06F 3/0202 Constructional details or processes of manufacture of the input device
• 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
• CPC Class Codes: H01H 2215/052 piezoelectric
• CPC Class Codes: H01H 2217/032 Feedback about selected symbol, e.g. display
• CPC Class Codes: H01H 2219/018 Electroluminescent panel
• CPC Class Codes: H01H 2219/039 Selective or different modes of illumination
• CPC Class Codes: H03K 17/965 Switches controlled by moving an element forming part of the switch
• CPC Class Codes: H03K 2217/96042 with illumination

Abstract

Various embodiments provide keyboards that utilize electrically-deformable material as an actuating mechanism to provide haptic feedback to a user of the keyboard. In at least some embodiments, the electrically-deformable material is utilized to impart, to a depressed key or keyboard element, a multi-vectored movement that produces a perceived acceleration of the key or keyboard element thus providing a user with haptic feedback which simulates a snapover movement. In at least some embodiments, a light source can be mounted or otherwise positioned relatively close to and beneath the top surface of one or more keys or keyboard elements to backlight a portion or portions of a keyboard.

Claims

1. An apparatus comprising:

at least one key positioned on the apparatus;

an actuating mechanism operatively associated with the key, the actuation mechanism being configured to both actuate the key and to facilitate light transmission therethough the actuation mechanism;

a light source configured to illuminate the key through the actuating mechanism.

2. An apparatus as recited in claim 1, wherein the actuating mechanism comprises electrically-deformable material.

3. An apparatus as recited in claim 1, wherein the actuating mechanism comprises an electroactive polymer (EAP).

4. An apparatus as recited in claim 1, wherein the actuating mechanism material is translucent.

5. An apparatus as recited in claim 1, wherein the light source is positioned beneath at least part of the actuating mechanism.

6. An apparatus as recited in claim 1, wherein the light source comprises an electroluminescent light source.

7. An apparatus as recited in claim 1, wherein the light source is further configured to backlight only a sub-region of the key.

8. A keyboard comprising:

a plurality of separately movable keys positioned on the keyboard, each of one or more of the plurality of keys have operatively associated therewith;

an actuation mechanism positioned thereunder its associated key, wherein the actuation mechanism is configured to;

provide haptic feedback to a user engaging its associated key, and

facilitate light transmission therethrough the actuation mechanism and to its associated key; and

at least one light source positioned beneath at least one of the plurality of keys and configured to backlight one or more of the plurality of keys by light from the light source, wherein only a portion of at least one individual key has light from the light source passing therethrough.

9. A keyboard as recited in claim 8, wherein the actuation mechanism comprises electrically deformable material.

10. A keyboard as recited in claim 8, wherein the electrically-deformable material is translucent.

11. A keyboard as recited in claim 8, wherein the at least one light source is positioned beneath at least part of the actuation mechanism.

12. A keyboard as recited in claim 8, wherein the at least one light source comprises an electroluminescent light source.

13. A method comprising:

receiving an input associated with illuminating a keyboard portion of a keyboard having a plurality of keys, wherein one or more of the plurality of keys are actuated by an electrically-deformable material configured to facilitate light transmission therethrough to its associated key; and

responsive to receiving the input, illuminating the keyboard portion, wherein the illuminating includes emitting light from a light source positioned beneath at least a portion of a top surface of at least some of the plurality of keys of the keyboard and passing the emitted light through at least a portion of the top surface of the one or more illuminated keys.

14. A method as recited in claim 13, wherein the receiving comprises receiving a user input.

15. A method as recited in claim 13, wherein the receiving comprises receiving an input responsive to a depressed key.

16. A method as recited in claim 13, wherein the receiving comprises receiving an input from an application.

17. A method as recited in claim 13, wherein the keyboard portion comprises a subset of the plurality of keys.

18. A method as recited in claim 13, wherein the keyboard portion comprises an individual key of the plurality of keys.

19. A method as recited in claim 13, wherein the keyboard portion comprises a sub-region of an individual key of the plurality of keys.

20. A method as recited in claim 13, further comprising:

receiving another input associated with terminating illumination of the keyboard portion; and

responsive to receiving the input associated with terminating illumination, terminating illumination of the keyboard portion.