Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2005-08-23
2005-08-23
Yamnitzky, Marie (Department: 1774)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C313S504000, C257S040000, C528S008000, C528S394000, C528S425000, C568S003000, C568S607000, C568S626000, C570S183000
Reexamination Certificate
active
06933063
ABSTRACT:
Provided are spirobifluorene compounds which can provide excellent processibility with improved solubility in organic solvents, an electroluminescence (EL) polymer obtained therefrom and an EL element having the same. The EL polymer comprising repeating units of the following formula:wherein R1and R2are identical or different and are independently a straight-chain or branched alkyl group having from 1 to 22 carbon atoms or an aryl group substituted by C1-C22alkyl, and at least one of the R1and R2contains one or more atoms selected from the group consisting of O, N, S, Si and Ge.
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Taek Ahn, et al., Blue Electroluminescent Polymers: Control of Conjugation Length by Kink Linkages and Substituents in the Poly(p-phenylenevinylene)-Related Copolymers,Micromolecules1999, 32, 3279-3285.
Chu Hye Yong
Do Lee-Mi
Kim Seong Hyun
Lee Hyo-young
Lee Jeong Ik
Blakely & Sokoloff, Taylor & Zafman
Electronics and Telecommunications Research Institute
Yamnitzky Marie
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