Electroluminescent devices comprising polymers, and processes fo

Details Electroluminescent devices comprising polymers, and processes fo Electroluminescent devices comprising polymers, and processes fo

1994-12-15

1996-11-05

Ryan, Patrick

Stock material or miscellaneous articles

Composite

Of metal

428690, 428917, 313504, 313506, 25230135, B32B 900

Patent

active

055716261

ABSTRACT:
Electroluminescent devices have, as the active layer, a polymer having a chain comprising a plurality of electroluminescent groupings, adjacent pairs of the electroluminescent groupings being connected via two benzene rings linked to each other only by a single covalent bond, at least one of the benzene rings bearing, at a position ortho to the covalent bond, a substituent of sufficient size that the length of the bond connecting the two benzene rings is not less than 1.495 Angstroms. Preferred electroluminescent groupings comprise a chain of three or more para-phenylene groups connected to one another by amide, carboxy, ester, urea, urethane or vinyl groups. The polymers have a fixed conjugation length with predictable electroluminescent properties.

REFERENCES:
patent: 3621321 (1971-11-01), Williams et al.
patent: 4356429 (1982-10-01), Tang
patent: 4446305 (1984-05-01), Rogers et al.
patent: 5231329 (1993-07-01), Nishikitani et al.
Microelectronics Manufacturing and Testing, 1985 Desk Manual, vol. 8, No. 3, p. 59.
Grant and Hackh's Chemical Dictionary, 1993, 5th Edn., p. 151.
Ohmori et al., Jap. J. Appl. Phys., 30(11B), L1941-1943 (1991).

Affiliated with

Also associated with

Rating

Electroluminescent devices comprising polymers, and processes fo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electroluminescent devices comprising polymers, and processes fo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electroluminescent devices comprising polymers, and processes fo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2013933