Organic thin film electroluminescent device

Details Organic thin film electroluminescent device Organic thin film electroluminescent device

1995-10-13

1999-01-12

Yamnitzky, Marie

Stock material or miscellaneous articles

Composite

Of inorganic material

428704, 428917, 428332, 4284111, 428457, 313504, 313506, H05B 3314

Patent

active

058585621

ABSTRACT:
A hole transport layer in an organic electroluminescent device is made of a material containing at least a ditriphenylaminestyryl derivative expressed by the general formula: ##STR1## where A is selected from the group consisting of substituted and non-substituted alkylidene groups, cycloalkylidene groups, oxygen atom, sulfur atom, amino groups; where Ar.sup.1, Ar.sup.3, Ar.sup.4 and Ar.sup.5 are selected from the group consisting of substituted and non-substituted arylene groups; where Ar.sup.2 and Ar.sup.6 are one selected from the group consisting of substituted aryl groups and non-substituted aryl groups; and where X and Y are substituted groups expressed by the formula: ##STR2## where Ar.sup.7 and Ar.sup.8 are selected from the group consisting of substituted aryl groups and non-substituted aryl groups; and where R.sup.1 is one selected from the group consisting of hydrogen atom, halogen atom, hydroxyl groups, substituted and non-substituted amino groups, substituted and non-substituted alkoxy groups, substituted and non-substituted alkyl groups having 1-6 carbon atoms.

REFERENCES:
patent: 5338634 (1994-08-01), Ueda
patent: 5443922 (1995-08-01), Nishizaki et al.
patent: 5536949 (1996-07-01), Hosokawa et al.

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