Interactive Display Devices And Methods Of Making The Same

• US 20070080956A1
• Filed: 09/28/2006
• Published: 04/12/2007
• Est. Priority Date: 10/07/2005
• Status: Abandoned Application

• Current Assignee: Integrated Digital Technologies, Inc. (InterDigital, Inc.)
• Original Assignee: Integrated Digital Technologies, Inc. (InterDigital, Inc.)
• Inventors: FANN, Sen-Shyong
• Application Number:
  US11/536,403
• Publication Number:
  US 20070080956A1
• Time in Patent Office: Days
• US Class Current: 345/207
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/042 by opto-electronic means
• CPC Class Codes: H01L 27/14681 Bipolar transistor imagers

Abstract

An interactive display device in one example may include: a first substrate and a second substrate spaced apart from each other for providing a display area; a plurality of display control elements in a first matrix over the first substrate; a plurality of first data lines over the first substrate, each of the first data lines being coupled with one or more corresponding display control elements; and a plurality of first scan lines over the first substrate, each of the first scan lines being coupled with one or more corresponding display control elements. Additionally, the interactive display device may further include: a plurality of photo sensors in a second matrix over the first substrate, the photo sensors providing an interface for receiving input information; a plurality of second data lines over the first substrate, each of the second data lines being coupled with one or more corresponding photo sensors; and a plurality of second scan lines over the first substrate, each of the second scan lines being coupled with one or more corresponding photo sensors for activating the at least one corresponding photo sensor.

Claims

1. An interactive display device comprising:

a first substrate and a second substrate spaced apart from each other for providing a display area;

a plurality of display control elements in a first matrix over the first substrate, the display control elements controlling the information displayed by the display area;

a plurality of first data lines over the first substrate, each of the first data lines being coupled with at least one corresponding display control element;

a plurality of first scan lines over the first substrate, each of the first scan lines being coupled with at least one corresponding display control element;

a plurality of photo sensors in a second matrix over the first substrate, the photo sensors providing an interface for receiving input information;

a plurality of second data lines over the first substrate, each of the second data lines being coupled with at least one corresponding photo sensor; and

a plurality of second scan lines over the first substrate, each of the second scan lines being coupled with at least one corresponding photo sensor for activating the at least one corresponding photo sensor.

2. The interactive display device according to claim 1, wherein the interactive display device is coupled to a computing system that is capable of providing the information being displayed by the display area and being controlled by the input information received by the interactive display device.

3. The interactive display device according to claim 1, wherein at least some of the first scan lines also act as the second scan lines.

4. The interactive display device according to claim 1, wherein at least some of the first data lines also act as the second data lines.

5. The interactive display device according to claim 1, wherein each of the photo sensors comprises a photo transistor comprising:

a gate coupled to a corresponding second scan line;

a drain region coupled to one of a voltage source or the gate terminal; and

a source region coupled to a corresponding second data line.

6. The interactive display device according to claim 1, wherein each of the photo sensors comprises a photo transistor comprising:

a photo transistor gate coupled to a voltage source;

a photo transistor drain region coupled to the voltage source; and

a photo transistor source region; and

a switching transistor comprising;

a switching transistor gate coupled to a corresponding second scan line;

a switching transistor drain region coupled to the photo transistor source region; and

a switching transistor source region coupled to a corresponding second data line.

7. The interactive display device according to claim 1, wherein the first matrix and the second matrix are arranged so that the number of the display control elements in a horizontal direction is x times the number of the photo sensors in the horizontal direction and the number of the display control elements in a vertical direction is y times the number of the photo sensors in the vertical direction, wherein each of x and y is an integer.

8. The interactive display device according to claim 1, wherein the photo sensors provide location information of at least one of a light beam projected onto the interactive display device and an object or a shadow of the object on or near the interactive display device, wherein at least one of the light beam and the object provides an input information to the interactive display device.

9. The interactive display device according to claim 1, wherein each of the photo sensors comprises a dual-transistor photo transistor having a gate, two source regions, and one shared drain region.

10. The interactive display device according to claim 1, wherein the photo sensors and the display control elements comprise semiconductor components that are fabricated together.

11. The interactive display device according to claim 1, wherein the second data lines are coupled to an object shadow analysis circuit.

12. An interactive display device comprising:

a first substrate and a second substrate spaced apart from each other for providing a display area;

a plurality of display control elements in a first matrix over the first substrate, the display control elements controlling the information displayed by the display area;

a plurality of first data lines over the first substrate, each of the first data lines being coupled with at least one corresponding display control element;

a plurality of first scan lines over the first substrate, each of the first scan lines being coupled with at least one corresponding display control element;

a plurality of photo sensors in a second matrix over the first substrate, the photo sensors providing an interface for receiving input information, wherein at least some of the first scan lines are coupled to at least one corresponding photo sensor for activating the at least one corresponding photo sensor; and

a plurality of second data lines over the first substrate, each of the second data lines being coupled with at least one corresponding photo sensor.

13. The interactive display device according to claim 12, wherein the interactive display device is coupled to a computing system that is capable of providing the information being displayed by the display area and being controlled by the input information received by the interactive display device.

14. The interactive display device according to claim 12, wherein each of the photo sensors comprises a photo transistor comprising:

a gate coupled to a corresponding first scan line;

a drain region coupled to one of a voltage source or the gate terminal; and

a source region coupled to a corresponding second data line.

15. The interactive display device according to claim 12, wherein each of the photo sensors comprises a photo transistor comprising:

a photo transistor gate coupled to a voltage source;

a photo transistor drain region coupled to the voltage source; and

a photo transistor source region; and

a switching transistor comprising;

a switching transistor gate coupled to a corresponding first scan line;

a switching transistor drain region coupled to the photo transistor source region; and

a switching transistor source region coupled to a corresponding second data line.

16. The interactive display device according to claim 12, wherein the first matrix and the second matrix are arranged so that the number of the display control elements in a horizontal direction is x times the number of the photo sensors in the horizontal direction and the number of the display control elements in a vertical direction is y times the number of the photo sensors in the vertical direction, wherein each of x and y is an integer.

17. The interactive display device according to claim 12, wherein the photo sensors provide location information of at least one of a light beam projected onto the interactive display device and an object or a shadow of the object on or near the interactive display device, wherein at least one of the light beam and the object provides an input information to the interactive display device.

18. The interactive display device according to claim 12, wherein each of the photo sensors comprises a dual-transistor photo transistor having a gate, two source regions, and one shared drain region.

19. The interactive display device according to claim 12, wherein the photo sensors and the display control elements comprise semiconductor components that are fabricated together.

20. The interactive display device according to claim 12, wherein the second data lines are coupled to an object shadow analysis circuit.

21. An interactive display device comprising:

a first substrate and a second substrate spaced apart from each other for providing a display area;

a plurality of display control elements in a first matrix over the first substrate, the display control elements controlling the information displayed by the display area;

a plurality of first data lines over the first substrate, each of the first data lines being coupled with at least one corresponding display control element;

a plurality of first scan lines over the first substrate, each of the first scan lines being coupled with at least one corresponding display control elements;

a plurality of photo sensors in a second matrix over the first substrate, the photo sensors providing an interface for receiving input information, wherein the second matrix overlap with a portion of the first matrix so that some of the photo sensors are adjacent to or in the proximity of some of the display control elements.