Light emitting element and light emitting device

Details Light emitting element and light emitting device Light emitting element and light emitting device

2011-05-10

2011-05-10

Patel, Nimeshkumar D (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S512000, C313S504000, C428S690000

Reexamination Certificate

active

07940002

ABSTRACT:
A light emitting element of the invention includes n pieces of light emitting layers (n is a natural number) between first and second electrodes. A first layer and a second layer are provided between the mthlight emitting layer (m is a natural number of 1≦m≦n) and the m+1thlight emitting layer. The first and second layers are contacted to each other. The first layer contain a substance that transports holes easily and a substance with an electron accepting property. The second layer contains a substance that transports electrons easily and a substance with an electron donating property. Molybdenum oxide is used as the substance with the electron accepting property.

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