Organic electroluminescent device with reduced initial drive...

Details Organic electroluminescent device with reduced initial drive... Organic electroluminescent device with reduced initial drive...

2004-03-26

2009-06-23

Glick, Edward J (Department: 2882)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S498000, C313S504000

Reexamination Certificate

active

07550919

ABSTRACT:
In an organic EL device, a hole injection electrode (anode) made of a transparent electrode. A first hole injection layer made of CuPc, a second hole injection layer made of CFx, a hole transport layer and alight emitting layer each made of an organic material are formed in this order on the hole injection electrode. An electron injection electrode (cathode) is further formed on the light emitting layer. The first hole injection layer made of CuPc absorbs ultraviolet light, so that the organic EL device can be prevented from deterioration by the ultraviolet light. The second hole injection layer made of CFx promotes injection of holes, so that the initial drive voltage can be reduced.

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