Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2004-07-28
2008-05-20
Patel, Nimeshkumar D. (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C313S498000, C313S503000, C313S506000
Reexamination Certificate
active
07375462
ABSTRACT:
The present invention relates to an organic electroluminescent display device comprising a UV stabilizer and provides an organic electroluminescent display device whose characteristics are not degraded by ultraviolet rays even after being exposed to sunlight by providing an organic electroluminescent display device comprising a substrate, a first electrode formed on the substrate, a light emitting layer formed on the first electrode, and a second electrode formed on the upper part of the light emitting layer, wherein the light emitting layer is doped with a UV stabilizer, and the UV stabilizer has an absorption range of 420 nm or less.
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Chin Byung-Doo
Kim Mu-Hyun
Lee Seong-Taek
Suh Min-Chul
Yang Nam-Choul
H.C. Park & Associates PLC
Patel Nimeshkumar D.
Quarterman Kevin
Samsung SDI & Co., Ltd.
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