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Machine translation
1. (WO1997038452) HIGH CONTRAST ELECTROLUMINESCENT DISPLAYS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/1997/038452 International Application No.: PCT/GB1997/000996
Publication Date: 16.10.1997 International Filing Date: 10.04.1997
IPC:
H01L 27/32 (2006.01) ,H01L 51/52 (2006.01) ,H05B 33/00 (2006.01) ,H05B 33/12 (2006.01)
Applicants: MAY, Paul[GB/GB]; GB (UsOnly)
CAMBRIDGE DISPLAY TECHNOLOGY LIMITED[GB/GB]; 13 Station Road Cambridge CB1 2JB, GB (AllExceptUS)
Inventors: MAY, Paul; GB
Agent: DRIVER, Virginia, Rozanne ; Page White & Farrer 54 Doughty Street London WC1N 2LS, GB
Priority Data:
9607436.410.04.1996GB
9702196.804.02.1997GB
Title (EN) HIGH CONTRAST ELECTROLUMINESCENT DISPLAYS
(FR) DISPOSITIFS D'AFFICHAGE ELECTROLUMINESCENTS A CONTRASTE ELEVE
Abstract:
(EN) The contrast of an electroluminescent display using an organic EL layer (6) is improved by using a circular polariser (14) in front of the surface. The polariser causes ambient light to be absorbed (LT, LR) while allowing transmission of emitted light (LE) and therefore improves the contrast of the display.
(FR) On accentue le contraste d'un dispositif d'affichage électroluminescent utilisant une couche organique électroluminescente (6) en disposant un polariseur circulaire (14) en face de ladite surface. Ledit polariseur provoque l'absorption de la lumière ambiante (LT, LR) tout en permettant la transmission de la lumière émise (LE) et améliore par conséquent le contraste du dispositif d'affichage.
Designated States: GB, JP, KR, US
European Patent Office (EPO) (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)