Transparent display and illumination device

• US 9,385,340 B2
• Filed: 06/07/2013
• Issued: 07/05/2016
• Est. Priority Date: 10/19/2012
• Status: Active Grant

• Current Assignee: Universal Display Corporation
• Original Assignee: Universal Display Corporation
• Inventors: Hack, Michael, Ma, Ruiqing, Krall, Emory, Jackson, Duncan, Billings, Eoin
• Primary Examiner(s): MENZ, DOUGLAS M
• Application Number:
  US13/912,961
• Publication Number:
  US 20140110681A1
• Time in Patent Office: 1,124 Days
• Field of Search: 257/40
• US Class Current: 1/1
• CPC Class Codes: H10K 2102/3031 Two-side emission, e.g. transparent OLEDs [TOLED]
• CPC Class Codes: H10K 50/805 Electrodes
• CPC Class Codes: H10K 59/121 characterised by the geometry or disposition of pixel elements

Abstract

A transparent emissive device is provided. The device may include one or more OLEDs having an anode, a cathode, and an organic emissive layer disposed between the anode and the cathode. In some configurations, the OLEDs may be non-transparent. The device may also include one or more locally transparent regions, which, in combination with the non-transparent OLEDs, provides an overall device transparency of 5% or more.

Claims

1. A device comprising:

a light emitting first device comprising a first region and a second region;

wherein the first device transmits light through the first region and a first surface of the first device emits light from the second region, wherein the first region is transparent and the second region is substantially non-transparent, regardless of power being applied to the device; and

wherein the device has an overall transparency of at least 5%.

2. The device as recited in claim 1, wherein a second surface of the first device emits light from the second region.

3. The device as recited in claim 2, wherein the second region of the second surface comprises a single-pixel OLED.

4. The device as recited in claim 3, wherein the second region substantially surrounds a portion of the first region.

5. The device as recited in claim 2, wherein a spectrum of light emitted from the second surface is different from a spectrum of light emitted from the first surface.

6. The device as recited in claim 2, wherein light emitted by the second surface is controllable independently of light emitted by the first surface.

7. The device as recited in claim 1, wherein the first surface provides a full-color display.

8. The device as recited in claim 1, wherein the second surface provides a general illumination.

9. The device as recited in claim 1, wherein the second region has a local transparency of less than 5%.

10. The device as recited in claim 1, wherein the second region has a local transparency of less than 1%.

11. The device as recited in claim 1, wherein the device has an overall transparency of at least 10%.

12. The device as recited in claim 1, wherein the second region has a local transparency of less than 1% and wherein the device has an overall transparency of at least 10%.

13. The device as recited in claim 1, wherein the device comprises a first plurality of OLEDs, each of the first plurality of OLEDs configured to emit light from the first surface of the second region.

14. The device as recited in claim 13, wherein each of the first plurality of OLEDs is configured to emit light only through the second region.

15. The device as recited in claim 14, wherein the second region has a local transparency of less than 5%.

16. The device as recited in claim 14, wherein the device has an overall transparency of at least 10%.

17. The device as recited in claim 13, wherein the device comprises a second plurality of OLEDs, each of the second plurality of OLEDs configured to emit light from the second surface of the second region.

18. The device as recited in claim 17, wherein each of the plurality of OLEDs is configured to emit light only though the second region.

19. The device as recited in claim 13, wherein the first plurality of OLEDs occupy not more than about 75% of the total area of the display.

20. The device as recited in claim 19, wherein at least 70% of the area of the display not occupied by the first plurality of OLEDs has a local transparency of at least 25%.

21. The device as recited in claim 19, wherein at least 70% of the area of the display not occupied by the first plurality of OLEDs has a local transparency of at least 50%.

22. The device as recited in claim 17, wherein the device comprises a plurality of regions, each region containing:

one or more of the first plurality of OLEDs; and

a transparent region having a local transparency of at least 25%.

23. The device as recited in claim 22, each of the plurality of regions comprising one or more of the second plurality of OLEDs.

24. The device as recited in claim 1, further comprising a camera.

25. The device as recited in claim 24, further comprising an OLED configured to emit light from a second surface of the device.

26. The device as recited in claim 25, wherein the OLED emits light at a non-visible wavelength.

27. The device of claim 26, wherein the non-visible wavelength is infrared.

28. The device of claim 26, wherein the second region of the first surface comprises a display capable of displaying an image captured by the camera using the non-visible wavelength light.

29. The device of claim 28, wherein the first region is transparent to visible light.

30. The device as recited in claim 1, further comprising a plastic substrate.

31. The device as recited in claim 1, wherein the device is of a type selected from the group consisting of:

a flat panel display, a monitor, a television, a billboard, a heads-up display, a flexible display, a cell phone, a PDA, a laptop computer, a digital camera, a camcorder, a viewfinder, a micro-display, a vehicle display, a wall, and a sign.

32. The device as recited in claim 2, wherein the second surface of the first device is disposed on an opposite surface of the light emitting device relative to the first surface of the first device.