On-Display-Sensor Stack

• US 20130181911A1
• Filed: 01/17/2012
• Published: 07/18/2013
• Est. Priority Date: 01/17/2012
• Status: Abandoned Application

• Current Assignee: Atmel Corporation (Microchip Technology Incorporated)
• Original Assignee: David Brent Guard
• Inventors: Yilmaz, Esat, Guard, David Brent
• Application Number:
  US13/351,903
• Publication Number:
  US 20130181911A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• 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 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: H03K 17/9622 using a plurality of detectors, e.g. keyboard
• CPC Class Codes: H03K 2217/96031 Combination of touch switch and LC display
• CPC Class Codes: H03K 2217/960755 Constructional details of capacitive touch and proximity switches

Abstract

In one embodiment, an electronic display includes a display stack including one or more layers; and drive or sense electrodes of a touch sensor substantially disposed on one or more of the layers on or within the display stack. The drive or sense electrodes are made of a conductive mesh of conductive material.

Claims

1. An electronic display comprising:

a display stack comprising one or more layers; and

drive or sense electrodes of a touch sensor substantially disposed on one or more of the layers on or within the display stack, the drive or sense electrodes being made of a conductive mesh of conductive material.

2. The electronic display of claim 1, wherein one or more of the layers of the display stack is between the conductive mesh and a cover layer of the display stack.

3. The electronic display of claim 1, wherein one or more of the layers of the display stack on which the touch sensor is disposed has an optical function modifying an optical property of light.

4. The electronic display of claim 3, wherein the optical function comprises color filtering.

5. The electronic display of claim 3, wherein the optical function comprises polarization.

6. The electronic display of claim 1, wherein the conductive mesh comprises a plurality of mesh segments, each of the mesh segments comprise a plurality of lines of conductive material, each of the lines of conductive material having a width within a range of approximately 1 to approximately 10 μ

m.

7. The electronic display of claim 6, wherein a contribution of the lines of conductive material to the attenuation of light through the conductive mesh is within a range of approximately 1 to approximately 10%.

8. The electronic display of claim 1, wherein the conductive mesh substantially covers an entire touch-sensitive area of the touch sensor disposed on one or more of the layers.

9. The electronic display of claim 1, wherein the conductive material comprises gold, aluminum, copper, silver, gold-based, aluminum-based, silver-based, or copper-based, or carbon nanotubes.

10. The electronic display of claim 1, wherein the electrodes, a track, and a connection pad of the touch sensor may be formed from a same conductive material.

11. A device comprising:

an electronic display comprising a display stack comprising one or more layers; and

drive or sense electrodes of a touch sensor substantially disposed on one or more of the layers on or within the display stack, the drive or sense electrodes being made of a conductive mesh of conductive material; and

a computer-readable non-transitory storage medium embodying logic that is configured when executed to control the touch sensor.

12. The device of claim 11, wherein one or more of the layers of the display stack is between the conductive mesh and a cover layer of the display stack.

13. The device of claim 11, wherein one or more of the layers of the display stack on which the touch sensor is disposed has an optical function modifying an optical property of light.

14. The device of claim 13, wherein the optical function comprises color filtering.

15. The device of claim 13, wherein the optical function comprises polarization.

16. The device of claim 11, wherein the conductive mesh comprises a plurality of mesh segments, each of the mesh segments comprise a plurality of lines of conductive material, each of the lines of conductive material having a width within a range of approximately 1 to approximately 10 μ

m.

17. The device of claim 16, wherein a contribution of the lines of conductive material to the attenuation of light through the conductive mesh is within a range of approximately 1 to approximately 10%.

18. The device of claim 11, wherein the conductive mesh substantially covers an entire touch-sensitive area of the touch sensor disposed on one or more of the layers.

19. The device of claim 11, wherein the conductive material comprises gold, aluminum, copper, silver, gold-based, aluminum-based, silver-based, or copper-based, or carbon nanotubes.

20. The device of claim 11, wherein the electrodes, a track, and a connection pad of the touch sensor may be formed from a same conductive material.

21. An electronic display comprising:

a cover panel;

a display stack comprising one or more layers, one or more of the layers of the display stack has an optical function modifying an optical property of light;

an adhesive layer between the cover panel and a top layer of a display stack; and

drive or sense electrodes of a touch sensor substantially disposed on one or more of the layers on or within the display stack, the drive or sense electrodes being made of a conductive mesh of conductive material.