Organic electroluminescent device having a particular substrate

Details Organic electroluminescent device having a particular substrate Organic electroluminescent device having a particular substrate

1998-08-26

2000-12-19

Patel, Nimeshkumar D.

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313504, 313506, 313509, H01J 162, H01J 6304

Patent

active

061631108

ABSTRACT:
An organic EL device comprises on a substrate an electron injecting electrode, a hole injecting electrode, and an organic layer located between both the electrodes. The substrate has an optical refractive index that is within.+-.0.05 of that of the organic layer. By reducing losses due to a refractive index difference between the substrate and the organic layer, light emission luminance fluctuations can be reduced as much as possible even when there is a variation in the thickness of the organic layer.

REFERENCES:
patent: 5258690 (1993-11-01), Leksell et al.
patent: 5891554 (1999-04-01), Hosokawa et al.

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