Stock material or miscellaneous articles – Composite – Of metal
Patent
1993-04-27
1994-09-13
Ryan, Patrick J.
Stock material or miscellaneous articles
Composite
Of metal
428690, 428917, 313504, 25230116, B32B 900
Patent
active
053467728
ABSTRACT:
An organic electroluminescent device comprises an anode, a positive-hole transport layer of organic compound, an emitting layer of organic compound, and a cathode which are laminated in sequence, wherein the emitting layer comprises a pyrimidopyrimidine derivative. This device emits with a high luminance and high emission efficiency.
REFERENCES:
patent: 5153073 (1992-10-01), Ohnuma et al.
patent: 5256945 (1993-10-01), Imai et al.
Nakashima et al., "Synthesis of Pyrimido [5,4-d] Pyrimidine Derivatives and Their UV Absorption and Fluorescence Spectral Properties," Dyes and Pigments, 12 (1990) 21-26.
Akiyama Shuzo
Funaki Jun
Imai Kunio
Murayama Ryuji
Nakashima Kenichiro
Jewik Patrick R.
Pioneer Electronic Corporation
Ryan Patrick J.
LandOfFree
Organic electroluminescence device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Organic electroluminescence device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Organic electroluminescence device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1119414