Saturated color organic light emitting devices
First Claim
1. An organic light emitting device, comprising:
- a first electrode comprising a transparent metallic oxide;
a second electrode;
at least one organic layer disposed between the first electrode and the second electrode, the at least one organic layer including an emissive layer, wherein the emissive layer includes an emissive material with an intrinsic emission spectrum having a peak emission wavelength in the visible spectrum less than 500 nm; and
a color saturation enhancement layer disposed between the first electrode and the second electrode and in direct contact with the first electrode, wherein the color saturation enhancement layer consists essentially of one or more metals or conductive doped inorganic semiconductors;
wherein the color enhancement saturation layer has an index of refraction at least 0.2 different from that of the at least one organic layer and is in direct contact with the at least one organic layer;
wherein the color saturation enhancement layer has a thickness of 1-10 nm; and
wherein the reflectivity of the color saturation enhancement layer is in the range 5% to 30% for the peak wavelength in the intrinsic emission spectrum of the emissive material.
1 Assignment
0 Petitions
Accused Products
Abstract
An organic light emitting device is provided. The device has a first electrode, a second electrode, and an emissive layer disposed between the first and second electrodes. The emissive layer includes an emissive material with an intrinsic emission spectrum having a peak emission wavelength in the visible spectrum less than 500 nm. The device includes a color saturation enhancement layer in direct contact with the first electrode. The color saturation enhancement layer consists essentially of one or more metals or conductive doped inorganic semiconductors, and has an index of refraction at least 0.2 different from that of the organic layers. The color saturation enhancement layer has a thickness of 1-10 nm. The reflectivity of the color saturation enhancement layer is in the range 5% to 30% for the peak wavelength in the intrinsic emission spectrum of the emissive material. Preferably, the color saturation enhancement layer is disposed between the first and second electrodes.
41 Citations
19 Claims
-
1. An organic light emitting device, comprising:
-
a first electrode comprising a transparent metallic oxide; a second electrode; at least one organic layer disposed between the first electrode and the second electrode, the at least one organic layer including an emissive layer, wherein the emissive layer includes an emissive material with an intrinsic emission spectrum having a peak emission wavelength in the visible spectrum less than 500 nm; and a color saturation enhancement layer disposed between the first electrode and the second electrode and in direct contact with the first electrode, wherein the color saturation enhancement layer consists essentially of one or more metals or conductive doped inorganic semiconductors; wherein the color enhancement saturation layer has an index of refraction at least 0.2 different from that of the at least one organic layer and is in direct contact with the at least one organic layer; wherein the color saturation enhancement layer has a thickness of 1-10 nm; and wherein the reflectivity of the color saturation enhancement layer is in the range 5% to 30% for the peak wavelength in the intrinsic emission spectrum of the emissive material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. An organic light emitting device, comprising:
-
a first electrode comprising a transparent metallic oxide; a second electrode; an emissive layer disposed between the first electrode and the second electrode, wherein the emissive layer includes an emissive material with an intrinsic emission spectrum having a peak emission wavelength in the visible spectrum less than 500 nm; and a color saturation enhancement layer in direct contact with the first electrode, wherein the color saturation enhancement layer consists essentially of one or more metals or conductive doped inorganic semiconductors; wherein the color enhancement saturation layer has an index of refraction at least 0.2 different from that of the first electrode and is disposed between the first electrode and the second electrode and in direct contact with the emissive layer; wherein the color saturation enhancement layer has a thickness of 1-10 nm; and wherein the reflectivity of the color saturation enhancement layer is in the range 5% to 30% for the peak wavelength in the intrinsic emission spectrum of the emissive material.
-
Specification