Method for preparing organic light-emitting diode including...

Details Method for preparing organic light-emitting diode including... Method for preparing organic light-emitting diode including...

2011-03-08

2011-03-08

Brewster, William M. (Department: 2823)

Semiconductor device manufacturing: process

Making device or circuit emissive of nonelectrical signal

C438S045000, C438S046000

Reexamination Certificate

active

07901962

ABSTRACT:
The present invention relates to a method for preparing an organic light-emitting diode, including: (A) providing a substrate with a first electrode thereon; (B) using a first solution to form a first light-emitting layer over the first electrode, where the first solution includes a first solvent and a first dye; (C) using a second solution to form a second light-emitting layer over the first light-emitting layer, where the second solution includes a second solvent and a second dye, and the first solvent and the second solvent are different solvents and satisfy at least one of the following conditions: the dipole moment difference between the first solvent and the second solvent being 0.5 D or more, or the viscosity of the first solvent being 0.3 mPa·s or more; and (D) forming a second electrode over the second light-emitting layer.

REFERENCES:
patent: 2008/0026135 (2008-01-01), Bentsen et al.

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