Compositions – Organic luminescent material containing compositions
Reexamination Certificate
2005-01-18
2005-01-18
Yamnitzky, Marie (Department: 1774)
Compositions
Organic luminescent material containing compositions
C252S301350, C106S031320, C347S100000, C427S066000, C428S690000, C428S917000
Reexamination Certificate
active
06843937
ABSTRACT:
A composition for an organic EL element which can form a high precision pattern in a simple manner and in a short time and a method of manufacturing the organic EL element are disclosed. By using the composition, optimum film design and luminescence characteristic can be easily obtained, and an adjustment of a luminescence efficiency can also be easily performed. The composition for an organic EL element comprises a precursor of a conjugated organic polymer compound for forming at least one luminescent layer (106), (107), (108) having a certain color and at least one kind of fluorescent dye for changing the luminescence characteristic of the luminescent layer. The luminescent layer is made from a pattern formed by an ink-jet method. As for the precursor, a precursor of PPV, PPV derivative or the like is preferably used. Further, it is preferable that the composition for the organic EL element satisfies at least one of the conditions including a contact angle of 30 to 170 degrees with respect to a nozzle surface of a nozzle provided in a head of an ink-jet device used for the ink-jet method for discharging the composition, a viscosity of 1 to 20 cp and a surface tension of 20 to 70 dyne/cm.
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Kanbe Sadao
Kiguchi Hiroshi
Seki Shun-ichi
Oliff & Berridg,e PLC
Seiko Epson Corporation
Yamnitzky Marie
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