Luminescence device

Liquid crystal cells – elements and systems – Particular structure – Particular illumination

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C349S069000, C313S506000, C313S505000

Reexamination Certificate

active

06897913

ABSTRACT:
A luminescence device exhibiting a better luminescence efficiency is provided by disposing between a pair of electrodes a luminescence layer comprising a mixture of a liquid crystal compound assuming discotic phase or smectic phase with a phosphorescent compound preferably having a planar molecular skeleton.

REFERENCES:
patent: 3775631 (1973-11-01), Morikawa
patent: 3844637 (1974-10-01), Masi
patent: 4416515 (1983-11-01), Funada et al.
patent: 4556287 (1985-12-01), Funada et al.
patent: 4943145 (1990-07-01), Miyata
patent: 5698858 (1997-12-01), Börner
patent: 5756224 (1998-05-01), Börner et al.
patent: 5942612 (1999-08-01), McKeown et al.
patent: 6174455 (2001-01-01), Hanna et al.
patent: 6437123 (2002-08-01), Bock et al.
patent: 198 09 944 (1998-10-01), None
patent: 186 970 (1985-11-01), None
patent: 864 631 (1998-09-01), None
patent: 915 144 (1999-05-01), None
patent: 8-319482 (1996-12-01), None
patent: 11-256148 (1999-09-01), None
patent: 11-329739 (1999-11-01), None
patent: 068052 (2000-03-01), None
Baldo, et al., “Very high-efficiency green organic light-emitting devices based . . . ”, Applied Physics Letters, vol. 75, No. 1 (1999), pp. 4-6.
O'Brien, et al., “Improved energy transfer in electrophosphorescent devices”, Applied Physics Letters, vol. 74, No. 3 (1999), pp. 442-444.
K. Kogo, et al., “Polarized Ligth Emission from a Calamitic Liquid Crystalline Semiconductor Doped with Dyes”, Appl. Phys. Lett., vol. 73, No. 11, pp. 1595-1597 (1998).
Communication, European Pattern Office, Application 01 117 367.1 -1218, Ref. EP 31588, Feb. 23, 2004, 3 pages.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Luminescence device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Luminescence device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Luminescence device will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3445307

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.