EP 0734043 A1 19960925 - Double-gated flat display screen
Title (en)
Double-gated flat display screen
Title (de)
Doppel-Gate-Flaches Bildschirm
Title (fr)
Ecran plat de visualisation a double grille
Publication
Application
Priority
FR 9503570 A 19950322
Abstract (en)
The screen has cathodes (1) organised in columns (28) to bombard a phosphor anode. The rows (21) of a first grid (20) are addressed sequentially during a period when the combs (24,25) of a second grid (23) are addressed alternately to form an interlaced image. The cathode columns are addressed simultaneously with each row at a potential to determine the brightness for a pixel defined by the comb addressed within the current row. The bias potential on the combs is chosen so that the electrons emitted by the cathode directly below the comb tracks (26,27) are such that the unaddressed tracks collect the electrons. The focusing potential for a track is greater than that of the unaddressed rows of the first grid while that of the collector is less. Three such assemblies are used to provide a colour display.
Abstract (fr)
L'invention concerne un écran plat de visualisation du type comportant une cathode (1) organisée en colonnes (28) de bombardement électronique d'une anode pourvue d'éléments luminophores, et comportant une première grille (20) organisée en rangées (21) susceptibles d'être adressées individuellement et une seconde grille (23) constituée d'au moins deux peignes (24, 25) de pistes (26, 27) alternées parallèles auxdites rangées (21) de ladite première grille (20), une même rangée (21) de ladite première grille (20) étant associée à une piste (26, 27) de chaque peigne (24, 25) et l'intersection de chaque piste (26, 27) avec une colonne (28) de la cathode (1) définissant un pixel de l'écran. <IMAGE>
IPC 1-7
IPC 8 full level
G09G 3/22 (2006.01); H01J 29/46 (2006.01); H01J 31/12 (2006.01)
CPC (source: EP US)
H01J 29/46 (2013.01 - EP US); H01J 31/127 (2013.01 - EP US)
Citation (search report)
- [A] FR 2708380 A1 19950203 - FUTABA DENSHI KOGYO KK [JP]
- [PA] EP 0660368 A1 19950628 - MARCONI GEC LTD [GB]
- [PA] FR 2712426 A1 19950519 - FUTABA DENSHI KOGYO KK [JP]
- [A] US 3935500 A 19760127 - OESS FREDERICK G, et al
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0734043 A1 19960925; EP 0734043 B1 20000531; DE 69608598 D1 20000706; DE 69608598 T2 20010208; FR 2732159 A1 19960927; FR 2732159 B1 19970613; JP H08293273 A 19961105; US 5764204 A 19980609
DOCDB simple family (application)
EP 96410030 A 19960321; DE 69608598 T 19960321; FR 9503570 A 19950322; JP 6636696 A 19960322; US 61817196 A 19960319