TRANSPARENT MULTI-TACTILE SENSOR

• US 20100117974A1
• Filed: 04/03/2008
• Published: 05/13/2010
• Est. Priority Date: 04/05/2007
• Status: Abandoned Application

• Current Assignee: Stantum SAS
• Original Assignee: Stantum SAS
• Inventors: Olivier, Julien, Joguet, Pascal
• Application Number:
  US12/594,563
• Publication Number:
  US 20100117974A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/04146 using pressure sensitive conductive elements delivering a boolean signal and located between crossing sensing lines, e.g. located between X and Y sensing line layers
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires

Abstract

The disclosure relates to a transparent multi-tactile sensor including a transparent semi-conducting active layer provided between two transparent conducting layers arranged as an array of cells formed by the intersection of rows and columns, characterised in that it comprises a control circuit successively supplying each semi-conducting portion corresponding to a cell, said control circuit including a means for analyzing the variation in the electrical characteristics due to the deformation of one or more sensor areas, each area including one or more cells, the semi-conducting characteristic of said intermediate layer making said cells independent from the measuring circuit.

Claims

1. A transparent multi-tactile sensor comprising a transparent semi-conducting active layer located between two transparent conducting layers arranged in a matrix of cells formed by the intersection of rows and columns, a control circuit successively supplying each semi-conducting portion corresponding to a cell said control circuit including an analyzer operably analyzing the variation in the electrical characteristics caused by the deformation of one or several zones of the sensor, with each zone including one or several cells, the semi-conducting characteristic of said intermediate layer making it possible to make the cells independent of the measuring circuit.

2. A transparent multi-tactile sensor according to claim 1, wherein the semi-conducting layer is made of an organic or polymeric material delivered in a thin layer.

3. a transparent multi-tactile sensor according to claim 2, wherein the semi-conducting layer is electrically insulated from one of the adjacent layers using a spacer-held gap, such insulation being locally broken by the deformation of the activated tactile zone.

4. A transparent multi-tactile sensor according to claim 3, wherein the semi-conducting layer is electrically insulated from one of the adjacent layers using a transparent conducting material, the electrical characteristics of which are locally modified by the deformation of the activated tactile zone.

5. A transparent multi-tactile sensor according to claim 4, wherein the electrical characteristics of the semi-conducting layer are locally modified by the deformation of the activated tactile zone.

6. A transparent multi-tactile sensor according to claim 1, wherein the variation in the electrical characteristics of the activated tactile zone depends on the pressure exerted on said tactile zone.

7. A transparent multi-tactile sensor according to claim 6, wherein the semi-conducting layer locally emits light when it is submitted to the electrical activation of a cell, all the local light emissions assimilating it to a display device.

8. A transparent multi-tactile sensor according to claim 1, wherein the control circuit supplies two scanning frequencies, one for displaying, the other one for reading the position of at least one activated tactile zone.