Organic luminescence device

Details Organic luminescence device Organic luminescence device

2005-07-12

2005-07-12

Yamnitzky, Marie (Department: 1774)

Stock material or miscellaneous articles

Composite

Of inorganic material

C428S917000, C313S504000, C313S506000, C544S229000, C544S230000, C546S014000, C546S015000, C556S406000

Reexamination Certificate

active

06916555

ABSTRACT:
In an organic luminescence device formed of one or plural layers of organic films between an anode and a cathode, at least one layer is any one of a luminescence layer, an electron injection layer and an electron-transporting layer and is formed of at least a spiro compound of formula (I-a) or (I-b) having a carbon atom or a silicon atom as a spiro atom and having four ring structures including at least one nitrogen atom-containing ring structure. By the use of the spiro compound of the formula (I-a) or (I-b), the resultant organic luminescence device produces a high-luminance fluorescent luminescence at a low voltage for a long period of time.

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