IP Library › Granted Patent US 7,026,597
Granted Patent B2
US 7,026,597 · App. 10/409,841 · Granted Apr 11, 2006

OLED display with integrated elongated photosensor

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Quick Facts
Patent No.
US 7,026,597
App. No.
10/409,841
Granted
Apr 11, 2006
Kind
B2
Abstract

An OLED display with a photosensor includes a substrate; a display area comprising an array of addressable OLEDs formed on the substrate; and an elongated photosensor formed on the substrate and located along an edge of the display area and responsive to ambient illumination to generate a feedback signal in response thereto, the elongated photosensor having a first conductive electrode that extends the length of the photosensor and a second conductive electrode.

Claims (27)

1. An OLED display with a photosensor, comprising:

a) a substrate;

b) display area comprising an array of addressable OLEDs formed on the substrate; and

c) an elongated photosensor formed on the substrate and located along an edge of the display area and responsive to ambient illumination to generate a feedback signal in response thereto, the elongated photosensor having a first conductive electrode that extends the length of the photosensor and a second conductive electrode;

wherein the elongated photosensor comprises an elongated semiconductor diode having a first elongated semiconductor of a first conductivity type in electrical contact with the first electrode, and a second elongated semiconductor of a second conductivity type in electrical contact with the first semiconductor and with the second conductive electrode, and further wherein the first electrode includes a conductive opaque portion extending along the length of the photosensor.

2. The OLED display claimed in claim 1 , wherein the OLED display is a bottom emitting display and the first electrode is located between the second electrode and the substrate.

3. The OLED display claimed in claim 1 , wherein the display area is a rectangular area and further comprising an elongated photosensor located at each edge of the rectangular display area.

4. The OLED display claimed in claim 1 , wherein the display area is a rectangular area and the elongated photosensor extends around a corner of the rectangular display area.

5. The OLED display claimed in claim 1 , wherein the photosensor surrounds the display area.

6. The OLED display claimed in claim 1 , wherein the display includes a plurality of photosensors each of which is individually addressable.

7. The OLED display claimed in claim 1 , wherein the display includes a plurality of photosensors which are connected in parallel.

8. The OLED display claimed in claim 1 , wherein the first electrode further comprises a less conductive transparent portion located over a light receiving surface of the photosensor.

9. The OLED display claimed in claim 8 , wherein the transparent portion of the first electrode comprises transparent thin metal film or ITO.

10. The OLED display claimed in claim 9 , wherein the OLED display is a top emitting display and the second electrode is located between the first electrode and the substrate.

11. The OLED display claimed in claim 1 , wherein the first electrode extends around the periphery of the photosensor.

12. The OLED display claimed in claim 11 , wherein the first electrode further comprises a less conductive transparent portion located over a light receiving surface of the photo sensor.

13. The OLED display claimed in claim 1 , wherein the opaque portion extends along an edge of the photosensor.

14. The OLED display claimed in claim 1 , wherein the opaque portion extends through a central region of the photosensor.

15. The OLED display claimed in claim 1 , wherein the first electrode includes a conductive opaque portion extending beneath a light receiving surface of the photosensor.

16. The OLED display claimed in claim 1 , wherein the second electrode extends the length of the photosensor.

17. The OLED display claimed in claim 16 , wherein the first electrode includes a conductive opaque portion extending along a long edge of the photosensor.

18. The OLED display claimed in claim 17 , wherein the first electrode further comprises a less conductive transparent portion located over a light receiving surface of the photosensor.

19. The OLED display claimed in claim 16 , wherein the second electrode includes a conductive opaque portion extending beneath a light receiving surface of the photosensor.

20. The OLED display claimed in claim 1 , wherein the photosensor is an organic photosensor.

21. The OLED display claimed in claim 1 , wherein the photosensor is a silicon photosensor.

22. The OLED display claimed in claim 1 , further comprising a color filter located over a light receiving surface of the photosensor.

23. The OLED display claimed in claim 1 , wherein the photosensor is a thin film device.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 26, 2010
From: EASTMAN KODAK COMPANY
To: GLOBAL OLED TECHNOLOGY LLC
Reel/Frame 023998/0368 →