Top mount clickpad module for bi-level basin

• US 9,652,057 B2
• Filed: 12/31/2014
• Issued: 05/16/2017
• Est. Priority Date: 12/31/2014
• Status: Active Grant

• Current Assignee: Synaptics Incorporated
• Original Assignee: Synaptics Incorporated
• Inventors: Tan, Yeh-Cheng, Lin, Po-Yu
• Primary Examiner(s): Zhou, Hong
• Application Number:
  US14/588,045
• Publication Number:
  US 20160188020A1
• Time in Patent Office: 867 Days
• Field of Search: 345168, 345169, 345173-174
• CPC Class Codes: G06F 1/169 the I/O peripheral being an integrated pointing device, e.g. trackball in the palm rest area, mini-joystick integrated between keyboard keys, touch pads or touch stripes G06F1/1643 takes precedence; constructional details of pointing devices G06F3/033
• CPC Class Codes: G06F 1/183 Internal mounting support structures, e.g. for printed circuit boards, internal connecting means for buses G06F13/409
• CPC Class Codes: G06F 3/03547 Touch pads, in which fingers can move on a surface
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• 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: G06F 3/0447 Position sensing using the local deformation of sensor cells

Abstract

An input device for use with an electronic system. The input device includes: a substantially planar input surface comprising a capacitive sensor layer configured to sense positional information for an input object, the input surface having a first zone and a second zone, wherein the second zone is configured to deflect in response to force applied to the second zone by the input object; a stiffener substrate having a first portion affixed to a bottom surface of the first zone, and at least one finger extending parallel to and spaced apart from the second zone; and an actuation mechanism disposed between the finger and the second zone.

Claims

1. An input device for use with an electronic system, comprising:

a substantially planar input surface comprising a capacitive sensor layer configured to sense positional information for an input object, the input surface having a first zone and a second zone, wherein the second zone is configured to deflect in response to force applied to the second zone by the input object;

a stiffener substrate comprising;

a first portion affixed to a bottom surface of the first zone,

at least one finger extending parallel to and spaced apart from the second zone, and

at least one T-shaped spring arm co-planar with the first portion; and

an actuation mechanism disposed between the finger and the second zone.

2. The input device of claim 1, further comprising a face sheet affixed to a top surface of the input surface.

3. The input device of claim 1, wherein the first zone does not deflect in response to force applied to the input surface.

4. The input device of claim 3, wherein the capacitive sensor layer comprises a polyethelene terephthalate (PET) substrate.

5. The input device of claim 1, wherein the input device comprises at least one of a force pad and a click pad for sensing force information for the input object.

6. The input device of claim 1, wherein at least part of the second zone is configured to deflect downwardly relative to the first zone in response to applied force in the second zone.

7. The input device of claim 1, wherein the first portion of the stiffener substrate and the at least one finger are formed from a single piece of metal.

8. The input device of claim 1, further comprising a control board disposed between the at least one finger and the second zone.

9. The input device of claim 8, wherein the control board comprises a glass reinforced epoxy laminate (FR4) board.

10. The input device of claim 8, wherein the control board comprises a processor communicatively coupled to the actuation mechanism and the capacitive sensor layer.

11. The input device of claim 1, wherein a junction between the finger and the first portion of the stiffener substrate comprises an embossed step.

12. The input device of claim 11, wherein a restoring force responsive to applied force is supplied by at least one of the finger and the actuation mechanism.

13. The input device of claim 1, wherein the actuation mechanism comprises at least one of:

a snap dome;

a mechanical switch;

an electronic switch;

a resistive sensor;

a capacitive sensor;

a contact switch;

a haptic sensor;

a piezoelectric switch;

a force sensor;

a proximity switch; and

a transcapacitive proximity sensor.

14. The input device of claim 1, wherein the at least one finger comprises first and second fingers extending parallel to and space apart from the second zone, each comprising a respective actuation mechanism thereby forming respective first and second input buttons.

15. An input device for use with an electronic system of the type including a substantially planar deck having a basin extending downwardly from the deck and comprising first and second recessed planar regions, the input device comprising:

an input surface having a first zone substantially coextensive with the first recessed planar region of the basin and configured to sense position information of an input object, and a flexible second zone substantially contiguous with the first zone and overhanging the second recessed planar region of the basin and configured to sense force information of an input object;

a stiffener substrate comprising;

a first portion affixed to a bottom surface of the first zone,

at least one finger extending parallel to and space apart from the flexible second zone, and

at least one T-shaped spring arm co-planar with the first portion, wherein the T-shaped spring arm extends cantilevered over the second recessed planar region of the basin; and

an actuation mechanism disposed between the at least one finger and the second zone.

16. The input device of claim 15, wherein:

the basin comprises an aperture;

a capacitive sensor layer comprises a sensor substrate having a plurality of sensor electrodes; and

the input device further comprises a processing system communicatively coupled to the actuation mechanism and to the sensor electrodes through a connector aligned with the aperture.

17. The input device of claim 16, wherein the sensor electrodes are disposed on a polyethelene terephthalate (PET) layer substrate, and the input device further comprises a face sheet affixed to a top surface of the input surface.

18. The input device of claim 15, wherein at least part of the flexible second zone is configured to deflect downwardly relative to the first zone in response to applied force.

19. The input device of claim 15, wherein the first portion of the stiffener and the at least one finger are formed from a single piece of metal, and further wherein the first zone of the input surface is adhesively secured to the first recessed planar region of the basin.

20. A clickable input device for use with an electronic system, comprising:

an input surface comprising a capacitive sensor layer configured to sense positional information for an input object, and a contiguous bendable portion configured to sense force information for the input object;

a face sheet affixed to the input surface;

a stiffener substrate having a first portion affixed to a bottom surface of the capacitive sensor layer, and a plurality of arms extending parallel to and spaced apart from the bendable portion of input surface;

respective switches disposed between each arm and the bendable portion;

a control board interleaved between the capacitive sensor layer and the stiffener substrate; and

a processing system communicatively coupled to the control board and configured to determine positional and force information for the input object.