Integrated LED/OLED lighting system

• US 9,661,709 B2
• Filed: 03/26/2015
• Issued: 05/23/2017
• Est. Priority Date: 03/28/2014
• Status: Active Grant

• Current Assignee: Universal Display Corporation
• Original Assignee: Universal Display Corporation
• Inventors: Krall, Emory, Paynter, Jason
• Primary Examiner(s): Husar, Stephen F
• Application Number:
  US14/669,926
• Publication Number:
  US 20150282269A1
• Time in Patent Office: 789 Days
• CPC Class Codes: F21S 8/06 by suspension
• CPC Class Codes: F21V 7/0016 on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
• CPC Class Codes: F21Y 2105/00 Planar light sources
• CPC Class Codes: F21Y 2113/20 of different form
• CPC Class Codes: F21Y 2115/15 Organic light-emitting diodes [OLED]
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 45/60 Circuit arrangements for operating LEDs comprising organic material, e.g. for operating organic light-emitting diodes [OLED] or polymer light-emitting diodes [PLED]
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

A light unit is provided that includes a frame having a top face and a bottom face, with the bottom face at least partially overlapping the top face in some configurations. A non-OLED light source is disposed on the top face and configured to emit light away from the top face. An OLED light source is disposed on the bottom face and configured to emit light away from the bottom face.

Claims

1. A light unit, comprising:

a frame comprising a top face and a bottom face, wherein the bottom face at least partially overlaps the top face;

a non-OLED light source disposed on the top face and configured to emit light away from the top face; and

an OLED light source disposed on the bottom face and configured to emit light away from the bottom face.

2. The light unit of claim 1, wherein the OLED light source is configured to block a portion of light emitted by the non-OLED light source.

3. The light unit of claim 1, comprising a circuit board disposed within the frame.

4. The light unit of claim 1, wherein the non-OLED light source comprises an LED light source.

5. The light unit of claim 1, wherein the non-OLED tight source comprises an LED light source, and the LED light source is tunable to emit a characteristic comprising a selected color of light.

6. The light unit of claim 1, wherein the non-OLED light source comprises an LED light source, and the LED light source is tunable to emit a characteristic comprising a selected brightness.

7. The light unit of claim 1, wherein the OLED light source is tunable to emit a characteristic comprising a selected color of light.

8. The light unit of claim 1, wherein the OLED light source is tunable to emit a characteristic comprising a selected brightness.

9. The light unit of claim 1, wherein, when the light unit is disposed in an assembly affixed to a surface:

light emitted by the OLED light source is directly visible;

at least a portion of light emitted directly by the non-OLED light source is blocked from view by the light unit; and

light emitted by the non-OLED light source is indirectly visible after reflection from the surface, when viewed from a viewing region closer to a face of the light unit on which the OLED light source is disposed than to a face of the light unit on which the non-OLED light source is disposed.

10. The light unit of claim 1, wherein the frame comprises a shape selected from the group consisting of:

an ellipse, a triangle, a rectangle, a trapezoid, a rhombus, a pentagon, a hexagon, and a heptagon.

11. An assembly, comprising:

a housing comprising one or more unit receptacles; and

at least one light unit disposed in a unit receptacle, the at least one light unit comprising;

a frame comprising a top face and a bottom face, wherein the top face at least partially overlaps the bottom face;

a non-OLED light source disposed on the top face and configured emit light away from the top face; and

an OLED light source disposed on the bottom face and configured to emit light away from the bottom face.

12. The assembly of claim 11, comprising at least one passive unit disposed in a unit receptacle, the passive unit comprising a material at least partially transparent to light.

13. The assembly of claim 11, wherein at least one unit receptacle comprises an opening.

14. The assembly of claim 11, wherein the OLED light source is configured to block a portion of light emitted by the non-OLED light source.

15. The assembly of claim 11, comprising a circuit board disposed within the frame.

16. The assembly of claim 11, wherein the non-LED light source comprises an LED light source.

17. The assembly of claim 11, wherein the non-LED light source comprises an LED light source, and the LED light source is tunable to emit a characteristic comprising at least one of the group consisting of a selected color of light and a selected brightness.

18. The assembly of claim 11, wherein the OLED light source is tunable to emit a characteristic comprising a selected color of light.

19. The assembly of claim 11, wherein the OLED light source is tunable to emit a characteristic comprising a selected brightness.

20. The assembly of claim 11, wherein, when the assembly is affixed to a surface:

light emitted by each OLED light source is directly visible;

at least a portion of light emitted directly by each non-OLED light source is blocked from view by the at least one light unit disposed in the unit receptacle; and

light emitted by each non-OLED light source is indirectly visible after reflection from the surface, when viewed from a viewing region closer to a face of the at least one light unit on which the OLED light source is disposed than to a face of the at least one light unit on which the non-OLED light source is disposed.