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US 2004/0070335 A1Published application
Oled device having improved light output
AssigneeEastman Kodak Company
InventorRonald S. Cok
Life of this patent
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Abstract
An OLED device includes a substrate; an OLED having a first electrode formed over the substrate, a layer of organic light emitting material formed over the first electrode, and a second electrode formed over the layer of organic light emitting material to define a light emitting area, wherein the light emitted by the OLED experiences undesirable waveguiding in the device; and a topographical feature located within the light emitting area for disrupting the waveguiding, whereby the light emitting efficiency of the light emitting area is improved.
Claims19
An OLED device, comprising:
- a) a substrate;
- b) an OLED having a first electrode formed over the substrate, a layer of organic light emitting material formed over the first electrode, and a second electrode formed over the layer of organic light emitting material to define a light emitting area, wherein the light emitted by the OLED experiences undesirable waveguiding in the device;
- and
- c) a topographical feature located within the light emitting area for disrupting the waveguiding, whereby the light emitting efficiency of the light emitting area is improved.
1 more element
Dependencies are inferred from the claim text.