Organic light emitting devices for illumination
First Claim
1. A method of fabricating an illumination source, capable of producing light, having a CRI value of at least about 80, the method comprising:
- fabricating a first stripe, having a first area, the first stripe comprising a first organic emissive layer, adapted to emit a first spectrum of light;
fabricating a second stripe, having a second area, the second stripe comprising a second organic emissive layer, adapted to emit a second spectrum of light; and
connecting a drive voltage supply across each stripe;
wherein each stripe has an aspect ratio greater than about 4 and a width greater than about 0.5 mm;
the first organic emissive layer in the first stripe emits the first spectrum of light, the second organic emissive layer in the second stripe emits the second spectrum of light, and the first spectrum of light is different from the second spectrum of light when a voltage is applied across the first and second stripes; and
a combination of the light emitted from the emissive layers has a CRI value of at least about 80.
0 Assignments
0 Petitions
Accused Products
Abstract
An organic light emitting device an a method of obtaining illumination from such a device is provided. The device has a plurality of regions, each region having an organic emissive layer adapted to emit a different spectrum of light. The regions in combination emit light suitable for illumination purposes. The area of each region may be selected such that the device is more efficient than an otherwise equivalent device having regions of equal size. The regions may have an aspect ratio of at least about four. All parts of any given region may be driven at the same current.
-
Citations
22 Claims
-
1. A method of fabricating an illumination source, capable of producing light, having a CRI value of at least about 80, the method comprising:
-
fabricating a first stripe, having a first area, the first stripe comprising a first organic emissive layer, adapted to emit a first spectrum of light;
fabricating a second stripe, having a second area, the second stripe comprising a second organic emissive layer, adapted to emit a second spectrum of light; and
connecting a drive voltage supply across each stripe;
whereineach stripe has an aspect ratio greater than about 4 and a width greater than about 0.5 mm;
the first organic emissive layer in the first stripe emits the first spectrum of light, the second organic emissive layer in the second stripe emits the second spectrum of light, and the first spectrum of light is different from the second spectrum of light when a voltage is applied across the first and second stripes; and
a combination of the light emitted from the emissive layers has a CRI value of at least about 80. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
-
22. A method of fabricating an illumination source, capable of producing light, having a CRI value of at least about 80, the method comprising:
-
fabricating a plurality of stripes, each stripe having an area, and comprising an organic emissive layer, adapted to emit a spectrum of light, wherein each stripe has an aspect ratio greater than about 4 and a width greater than about 0.5 mm; and
connecting a drive voltage supply across each stripe;
whereinwhen a voltage is applied across the plurality of stripes, the stripes emit at least two different spectra of light; and
a combination of the emitted spectra of light has a CRI value of at least about 80.
-
Specification