Composition containing phosphorescent compound and light emitting device using the same

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United States of America Patent

PATENT NO 10323181
APP PUB NO 20180016492A1
SERIAL NO

15545874

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Abstract

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A composition containing a phosphorescent compound and solvents, which is useful for producing a film having excellent flatness when used in a discharge type application method, is provided. The composition contains a phosphorescent compound, a solvent (A) and a solvent (B), in which the boiling point under 1 atm of the solvent (A) (bpA (° C.)) and the boiling point under 1 atm of the solvent (B) (bpB (° C.)) satisfy formulas (11) and (12), and the content of the solvent (A) (wtA (by weight)) and the content of solvent (B) (wtB (by weight)) satisfy formula (13):

description='In-line Formulae' end='lead'bpB<200° C.≤bpA  (11)description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'70° C.≤bpA−bpB≤120° C.  (12)description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'wtB≤wtA  (13).description='In-line Formulae' end='tail'

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Patent Owner(s)

Patent OwnerAddress
SUMITOMO CHEMICAL COMPANY LIMITEDTOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kakimoto, Hidenobu Osaka, JP 27 96

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