Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2008-07-25
2010-12-07
Tarazano, D. Lawrence (Department: 1786)
Stock material or miscellaneous articles
Composite
Of inorganic material
C313S504000, C548S433000, C427S058000, C427S066000
Reexamination Certificate
active
07846559
ABSTRACT:
A heterocyclic compound represented by Formula 1 below:X is selected from the group consisting of nitrogen, boron, and phosphorous; and Ar1, Ar2, Ar3and Ar4are each independently selected from the group consisting of a C6-C30 substituted or unsubstituted aryl group, a C6-C30 substituted or unsubstituted aryloxy group, a C4-C20 substituted or unsubstituted heterocyclic group, and a C6-C20 fused polycyclic group.The heterocyclic compound can be included in emission layers of top emission and bottom emission organic light emitting devices.
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Hwang Seok-Hwan
Kim Young-Kook
Kwak Yoon-Hyun
Lee Chang-Ho
Samsung Mobile Display Co., Ltd.
Stein McEwen, LLP
Tarazano D. Lawrence
Yang J. L.
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