Organic light emitting devices having reduced pixel shrinkage
First Claim
Patent Images
1. An organic light emitting device comprising an array of pixels, wherein each pixel comprises an emissive layer comprising a phosphorescent emissive material, and wherein the pixel shrinkage is less than about 10% area when operated at about 10 mA/cm2 constant dc current for at least 1000 hours at room temperature.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to organic light emitting devices (OLEDs), and more specifically to efficient OLEDs comprising an array of pixels and having reduced pixel shrinkage. The devices of the present invention comprise further relates to materials for use as emissive materials which give reduced shrinkage when incorporated into an OLED.
59 Citations
44 Claims
- 1. An organic light emitting device comprising an array of pixels, wherein each pixel comprises an emissive layer comprising a phosphorescent emissive material, and wherein the pixel shrinkage is less than about 10% area when operated at about 10 mA/cm2 constant dc current for at least 1000 hours at room temperature.
-
29. An organic light emitting device comprising an array of pixels, wherein each pixel comprises an emissive layer comprising a phosphorescent emissive material, and wherein the pixel shrinkage is less than about 10 μ
- m shrinkage when operated at about 10 mA/cm2 constant dc current for at least 1000 hours at room temperature.
- View Dependent Claims (30, 31, 32, 33)
- 34. An organic light emitting device comprising an emissive layer, wherein the emissive layer comprises a phosphorescent emissive material of the formula Ib
- 40. A compound having the formula Ib
Specification