EP 0000422 B1 19810429 - CATHODE RAY TUBE USING A SCREEN COMPRISING AN ELECTRO-OPTICAL SUBSTANCE
Title (en)
CATHODE RAY TUBE USING A SCREEN COMPRISING AN ELECTRO-OPTICAL SUBSTANCE
Publication
Application
Priority
GB 2509077 A 19770615
Abstract (en)
[origin: US4231068A] A cathode ray tube has an optical screen formed of a series of strips aligned with the writing direction of the cathode ray tube raster. The strips each comprise a layer of electro-optical material, and are electrically interconnected with the cathode ray tube circuitry so that each strip is transparent when the raster is writing on a cathode ray tube display face behind it. The electro-optical material is preferably a liquid crystal material.
IPC 1-7
IPC 8 full level
H04N 5/68 (2006.01); G02F 1/13 (2006.01); G02F 1/139 (2006.01); G09F 9/00 (2006.01); G09F 9/46 (2006.01); G09G 3/18 (2006.01); H01J 29/89 (2006.01)
CPC (source: EP US)
G02F 1/1313 (2013.01 - EP US); G02F 1/1393 (2013.01 - EP US); H01J 29/896 (2013.01 - EP US); H01J 2229/8926 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH DE FR GB NL SE
DOCDB simple family (publication)
EP 0000422 A1 19790124; EP 0000422 B1 19810429; BR 7803797 A 19790410; CA 1105544 A 19810721; DE 2860638 D1 19810806; IL 54915 A 19801026; JP S5433698 A 19790312; JP S6126669 B2 19860621; MX 144543 A 19811023; US 4231068 A 19801028
DOCDB simple family (application)
EP 78300047 A 19780615; BR 7803797 A 19780614; CA 305563 A 19780615; DE 2860638 T 19780615; IL 5491578 A 19780615; JP 7201078 A 19780614; MX 17380978 A 19780615; US 91477178 A 19780612