EP 0894283 A1 19990203 - LIQUID CRYSTAL DISPLAY CELL USING PHOSPHOR EMITTERS
Title (en)
LIQUID CRYSTAL DISPLAY CELL USING PHOSPHOR EMITTERS
Title (de)
FLÜSSIGKRISTALLANZEIGEZELLE MIT PHOSPHOREMITTERN
Title (fr)
CELLULES D'AFFICHEUR A CRISTAUX LIQUIDES UTILISANT DES PHOTOEMETTEURS AU PHOSPHORE
Publication
Application
Priority
- GB 9701091 W 19970418
- GB 9608090 A 19960419
Abstract (en)
[origin: WO9740416A1] A liquid crystal display device comprises a modulatable liquid-crystal layer (1) between transparent substrates (2, 3) in the usual way for modulating light (12) at a first (preferably UV) wavelength so that according to the voltage applied via electrodes (4, 5) it selectively reaches an array of phosphor emitters (10) in between the liquid crystal layer and the upper substrate (3). The phosphors (or other photoluminescent material) emit or reflect light at visible wavelengths when excited by light at the first wavelength. The significant feature is that the phosphors (10) are located inside the cell, which means that no special collimating measures are needed, and this is achieved by configuring the phosphors to have a surface of a smoothness comparable to that of the glass, for instance by suspending them in a spun polymer layer, or by applying a planarisation layer, or by using fluorescent glass.
IPC 1-7
IPC 8 full level
G02F 1/1335 (2006.01); G02F 1/13357 (2006.01)
CPC (source: EP)
G02F 1/133617 (2013.01); G02F 1/133565 (2021.01)
Citation (search report)
See references of WO 9740416A1
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
WO 9740416 A1 19971030; AU 2394797 A 19971112; EP 0894283 A1 19990203; GB 9608090 D0 19960626; JP 2000508788 A 20000711
DOCDB simple family (application)
GB 9701091 W 19970418; AU 2394797 A 19970418; EP 97919502 A 19970418; GB 9608090 A 19960419; JP 53783197 A 19970418