Lighting apparatus with flexible OLED area illumination light source and fixture
View Patent ↗Lighting apparatus includes a solid-state area illumination light source, having: a planar flexible substrate, a flexible organic light emitting diode (OLED) layer deposited on the flexible substrate, the organic light emitting diode layer including first and second electrodes for providing electrical power to the OLED layer, a flexible encapsulating cover covering the OLED layer, and first and second conductors electrically connected to the first and second electrodes, and extending beyond the encapsulating cover for making electrical contact to the first and second electrodes by an external power source, whereby the light source may be stored in a space saving planar configuration; and a lighting fixture for removably receiving and holding the light source in a curved 3 dimensional configuration, the lighting fixture including a support for holding the light source in the curved configuration and contacts for providing electrical contact between said first and second conductors and an external power source.
1. A solid-state area illumination light source adapted to be removably installed by a user in a lighting fixture and held in and supported by the lighting fixture in a curved three-dimensional configuration, comprising:
a) a planar flexible substrate;
b) a flexible organic light emitting diode (OLED) layer deposited on the flexible substrate, the organic light emitting diode layer including first and second electrodes for providing electrical power to the OLED layer;
c) a flexible encapsulating cover covering the OLED layer;
d) first and second conductors electrically connected to the first and second electrodes, and extending beyond the encapsulating cover for making electrical contact to the first and second electrodes by an external power source; and
e) wherein the light source is sufficiently flexible to be flexed in a curved three-dimensional configuration and also to be packed in a planar configuration for compact storage and shipment.
2. The solid-state area illumination light source claimed in claim 1 , wherein a plurality of solid-state area illumination light sources in planar configurations are stacked and packed together for compact storage and shipment.
3. The solid-state area illumination light source claimed in claim 1 , wherein the light source defines a body portion and one or more tab portions; the first and second conductors being located on the tab portion(s).
4. The solid-state area illumination light source claimed in claim 3 , wherein the tab portion(s) include an orientation feature for orienting the light source in a socket.
5. The solid-state area illumination light source claimed in claim 3 , wherein the first and second conductors are located on both sides of the tab portion, whereby the light source can be inserted into a socket in either of two orientations.
6. The solid-state area illumination light source claimed in claim 5 , wherein the light source defines tabs that are located at opposite edges of the substrate.
7. The solid-state area illumination light source claimed in claim 1 , wherein the first and second conductors are located at one or more edges of the light source.
8. The solid-state area illumination light source claimed in claim 7 , wherein the first and second conductors are located at opposite edges of the light source.
9. The solid-state area illumination light source claimed in claim 1 , wherein the light source emits light from one side of the flexible substrate and the first and second conductors are located on an opposite side.
10. The solid-state area illumination light source claimed in claim 1 , wherein the encapsulating cover is a coated layer.
11. The solid-state area illumination light source claimed in claim 1 , wherein the OLED layer is continuous over the substrate.
12. The solid-state area illumination light source claimed in claim 1 , wherein the light source operates on standard power.
13. The solid-state area illumination light source claimed in claim 12 , wherein the standard power is selected from the group consisting of 110 volt AC, 220 volt AC, 24 volt DC, 12 volt DC, and 6 volt DC.
14. The solid-state area illumination light source claimed in claim 1 , wherein the support is transparent.
15. The solid-state area illumination light source claimed in claim 1 , wherein the flexible substrate is transparent, and light is emitted from the OLED layer through the flexible substrate.
16. The solid-state area illumination light source claimed in claim 1 , wherein the encapsulating cover is transparent, and light is emitted from the OLED layer through the encapsulating cover.
17. The solid-state area illumination light source claimed in claim 1 , wherein the light source emits light from only one side of the substrate and further includes a reflective layer on the other side of the substrate.
18. The solid-state area illumination light source claimed in claim 1 , wherein the light source emits light through both the substrate and the encapsulating cover.
19. The solid-state area illumination light source claimed in claim 1 , wherein the light source has a rectangular shape adapted to be held in a cylindrical configuration.
20. The solid-state area illumination light source claimed in claim 1 , wherein the light source has an elongated rectangular shape adapted to be held in a spiral configuration.
21. The solid-state area illumination light source claimed in claim 1 , wherein the light source is has the shape of a ring segment adapted to be held in a conical configuration.