Organic light-emitting diode with relief patterns

Details Organic light-emitting diode with relief patterns Organic light-emitting diode with relief patterns

2005-05-13

2010-06-08

Macchiarolo, Peter J (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S506000, C313S114000

Reexamination Certificate

active

07733011

ABSTRACT:
The invention relates to an organic light-emitting diode comprising on a substrate, from the rear face to the front face, at least one rear electrode of a first type surmounted by an organic light-emitting layer, itself surmounted by at least one front electrode of a second type, the organic light-emitting layer producing light when holes and electrons are injected into it by a current flowing through the electrodes, the types corresponding to an anode and a cathode, at least one of the electrodes being substantially transparent for the produced light in order to allow it to escape through one of the faces of said diode, referred to as the exit face. According to the invention, said substantially transparent electrode comprises at least one transparent extraction zone and at least one reflective zone adapted to return the produced light through the light-emitting layer, and said diode also comprises reflector means which are arranged on the opposite side of said substantially transparent electrode from the organic light-emitting layer and are adapted to return the produced light to said substantially transparent electrode through the light-emitting layer. The diode may be configured by embossing, and various embodiments are described.

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patent: 2003/0044639 (2003-03-01), Fukuda
patent: 2003/0117067 (2003-06-01), Roitman et al.
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patent: 2004/0178722 (2004-09-01), Cok et al.
patent: 2007/0069642 (2007-03-01), Kitai et al.
patent: 0442002 (1991-08-01), None
patent: 0621500 (1994-10-01), None
patent: 2000-231985 (2000-08-01), None
Patent Abstracts of Japan, vol. 2000, No. 11, Jan. 3, 2001 & JP 2000-231985 (See Ref. AF).
Search Report Dated Oct. 14, 2005.

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