IP Library Granted Patent US 8,570,449
Granted Patent B2
US 8,570,449 · App. 12/566,477 · Granted Oct 29, 2013

Light sensitive display with pressure sensor

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Quick Facts
Patent No.
US 8,570,449
App. No.
12/566,477
Granted
Oct 29, 2013
Kind
B2
Abstract

A system comprising a display having a stack of layers configured to display an image, multiple elements included in the stack of layers and a pressure sensor. Each of the multiple elements is configured to sense light. The pressure sensor is distinct from the multiple elements and is configured to sense a pressure applied to the display.

Claims (35)

1. A system comprising:

a display comprising a stack of layers configured to display an image;

multiple elements included in the stack of layers, wherein each of the multiple elements is configured to sense light;

a pressure sensor distinct from the multiple elements and configured to sense a pressure applied to the display; and

a processor configured to detect an object based on output from the multiple elements and output from the pressure sensor.

2. The display of claim 1 , wherein the processor is configured to determine that the object has touched the display based on

output from the multiple elements indicating a region of sensed light intensity below a threshold level of sensed light intensity, and

output from the pressure sensor exceeding a threshold level.

3. The display of claim 1 , wherein the processor is configured to determine that the object is hovering over the display based on

output from the multiple elements indicating a region of sensed light intensity below a threshold level of sensed light intensity, and

output from the pressure sensor falling within a threshold level.

4. The system of claim 1 , wherein the pressure sensor comprises pressure sensitive tape.

5. The system of claim 4 , wherein the pressure sensitive tape is located directly between a pair of layers of the display.

6. The system of claim 4 , wherein the pressure sensitive tape is located directly between the display and a support for the display.

7. The system of claim 1 , wherein the pressure sensor comprises an accelerometer.

8. The system of claim 1 , wherein the pressure sensor comprises a piezoelectric device.

9. The system of claim 1 , wherein the pressure sensor comprises a capacitive sensor.

10. The system of claim 1 , wherein the pressure sensor comprises a resistive sensor.

11. The system of claim 1 , wherein the pressure sensor comprises an inductive sensor.

12. The system of claim 1 , wherein the pressure sensor comprises a laser vibrometer.

13. The system of claim 1 , wherein the pressure sensor comprises a light emitting diode vibrometer.

14. A display comprising:

a stack of layers configured to display an image;

multiple elements included in the stack of layers, wherein each of the multiple elements is configured to sense light;

a pressure sensor distinct from the multiple elements and configured to sense a pressure applied to the display; and

a processor configured to detect an object based on output from the multiple elements and output from the pressure sensor.

15. The display of claim 14 , wherein the processor is configured to determine that the object has touched the display based on

output from the multiple elements indicating a region of sensed light intensity below a threshold level of sensed light intensity, and

output from the pressure sensor exceeding a threshold level.

16. The display of claim 14 , wherein the processor is configured to determine that the object is hovering over the display based on

output from the multiple elements indicating a region of sensed light intensity below a threshold level of sensed light intensity, and

output from the pressure sensor falling within a threshold level.

17. The display of claim 14 , wherein the pressure sensor comprises pressure sensitive tape.

18. The display of claim 17 , wherein the pressure sensitive tape is located directly between a pair of layers of the display.

19. The display of claim 14 , wherein the pressure sensor comprises an accelerometer.