MULTICONTACT TRANSPARENT TACTILE SENSOR BASED ON A METALIZED SURFACE DEPOSITION

• US 20100289507A1
• Filed: 12/19/2008
• Published: 11/18/2010
• Est. Priority Date: 12/19/2007
• Status: Abandoned Application

• Current Assignee: Stantum SAS
• Original Assignee: Stantum SAS
• Inventors: Olivier, Julien, Largillier, Guillaume, Joguet, Pascal
• Application Number:
  US12/808,841
• Publication Number:
  US 20100289507A1
• Time in Patent Office: Days
• US Class Current: 324/686
• CPC Class Codes: G06F 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• 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: G06F 3/047 using sets of wires, e.g. crossed wires

Abstract

A multicontact transparent tactile sensor including two at least partially conducting transparent layers, the layers being spaced apart by an insulating transparent material. At least one of the layers includes a transparent sheet on which is deposited an array of conducting tracks whose width is less than 80 microns.

Claims

1-15. -15. (canceled)

16. A multicontact transparent tactile sensor comprising:

two at least partially conductive transparent layers spaced by an insulative transparent material, wherein at least one of the layers consists of a transparent film on which is deposited an array of conductive tracks having a width less than 80 microns.

17. A tactile sensor according to claim 16, wherein each of the two layers consists of a transparent film on which is deposited an array of conductive tracks electrically insulated from each other, the width of which is less than 80 microns.

18. A tactile sensor according to claim 17, wherein the array of conductive tracks consists of an opaque conductive material.

19. A tactile sensor according to claim 17, wherein the array of conductive tracks of the two layers are perpendicular to each other.

20. A tactile sensor according to claim 16, wherein the other transparent layer includes a transparent conductive surface coating.

21. A tactile sensor according to claim 20, wherein the other transparent layer includes a conductive ITO surface coating.

22. A tactile sensor according to claim 20, wherein the other transparent layer includes a capacitive sensor.

23. A tactile sensor according to claim 22, wherein the other transparent layer includes a sprayed capacitive sensor.

24. A tactile sensor according to claim 16, wherein the upper layer consists of a polyester film with a thickness of 125 microns.

25. A tactile sensor according to claim 16, wherein the upper layer consists of a glass film with a thickness of 20 microns.

26. A tactile sensor according to claim 16, wherein the lower layer consists of a glass plate with a dimension between 0.1 and 3 millimeters inclusive.

27. A tactile sensor according to claim 16, wherein the lower layer consists of a flexible glass film.

28. A tactile sensor according to claim 16, wherein the interlayer spacing is between 12 and 40 microns inclusive.

29. A tactile sensor according to claim 16, wherein the conductive tracks of the same array of conductive tracks are parallel and equally spaced.

30. A tactile sensor according to claim 16, wherein the array of conductive tracks consists of deposited thin metal wires the width of which is less than 80 microns.