Organic light emitting display apparatus

Details Organic light emitting display apparatus Organic light emitting display apparatus

2006-05-18

2009-11-17

Jackson, Jr., Jerome (Department: 2815)

Active solid-state devices (e.g., transistors, solid-state diode

Organic semiconductor material

C257SE51018

Reexamination Certificate

active

07619244

ABSTRACT:
The present invention provides a top emission type organic light emitting display apparatus in which manufacture it is possible to prevent the organic film from being oxidized when the upper transparent electrode is formed, and which is capable of emitting light at a low voltage. This organic light emitting display apparatus includes an organic light emitting layer and an upper electrode and a lower electrode sandwiching the said organic light emitting layer between them, and is of a structure in which the light emitted from the organic light emitting layer is taken out from the upper electrode side, wherein a buffer layer mostly made of an oxide with its Gibbs free energy generated at around the melting point being lower than −300 kJ/mol is provided between the organic light emitting layer and the upper electrode, the side of the organic layer which is in contact with the buffer layer being doped with an electron donative dopant.

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