High resistance...

Details High resistance... High resistance...

2006-02-28

2006-02-28

Kopec, Mark (Department: 1751)

Compositions

Electrically conductive or emissive compositions

C257S499000, C428S917000

Reexamination Certificate

active

07005088

ABSTRACT:
High resistance PEDT/PSS buffer layers are provided for use in electroluminescent devices such as, e.g., OLEDs. In accordance with another embodiment, there are provided OLEDs comprising high resistance PEDT/PSS buffer layers. In accordance with a further embodiment, methods have been developed for decreasing the conductivity of a PEDT/PSS layer cast from aqueous solution onto a substrate, by adding a cyclic ether co-solvent to the aqueous solution of PEDT/PSS prior to casting. In one embodiment, there are provided methods for decreasing the inherent conductivity of a PEDT/PSS layer cast onto a substrate so that this material can be used as an intermediate buffer layer in red, green, blue organic light emitting diodes (RGB OLEDs).

REFERENCES:
patent: 4552927 (1985-11-01), Warren
patent: 4959430 (1990-09-01), Jonas et al.
patent: 5247190 (1993-09-01), Friend et al.
patent: 5286413 (1994-02-01), Hannecart et al.
patent: 5300575 (1994-04-01), Jonas et al.
patent: 5317169 (1994-05-01), Nakano et al.
patent: 5378402 (1995-01-01), Cross et al.
patent: 5705888 (1998-01-01), Staring et al.
patent: 5766515 (1998-06-01), Jonas et al.
patent: 5986400 (1999-11-01), Staring et al.
patent: 5994496 (1999-11-01), Van Haare et al.
patent: 6001281 (1999-12-01), Lessner et al.
patent: 6056899 (2000-05-01), Lessner et al.
patent: 6083635 (2000-07-01), Jonas et al.
patent: 6136176 (2000-10-01), Wheeler et al.
patent: 6136372 (2000-10-01), Lessner et al.
patent: 6203727 (2001-03-01), Babinec et al.
patent: 2002/0061419 (2002-05-01), Woo et al.
patent: 0 866 110 (1998-09-01), None
patent: 1 003 179 (2000-05-01), None
patent: 0 757 088 (2000-06-01), None
patent: 1 010 733 (2000-06-01), None
patent: 0 786 926 (2001-08-01), None
patent: 0 765 106 (2002-11-01), None
patent: 2 124 635 (1984-02-01), None
patent: WO 98/01909 (1998-01-01), None
patent: WO 01/13087 (2001-02-01), None
patent: WO 01/29611 (2001-04-01), None
patent: WO 01/46987 (2001-06-01), None
patent: WO 01/47043 (2001-06-01), None
patent: WO 01/47044 (2001-06-01), None
patent: WO 01/47045 (2001-06-01), None
Kim, J. Y. et al., Enhancement of electrical conductivity of poly(3,4-ethylenedioxythiophene)/poly(4-sytrenesulfonate) by a change of solvents, Synthetic Metals, 2002, 311-316, 126, Elsevier Science, B.V.
Elschner, A. et al, High-Resistivity PEDT/PSS for Reduced Crosstalk in Passive Matrix OELs, Asia Display/IDW '01, 1427-1430.
A. J. Sharpe, Jr. et al., Improved Cationic Conductive Polymer, Calgon Corp., Pittsburgh, Pa. Coating conference [Proceedings], pp. 83-87, 1981, I-SSN 0364-2771.

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