Abstract:
The flat anode display screen (5') comprises at least two sets of parallel bands of anode conductors (9) coated with luminophore material (7). These are separated from each other by insulating bands (8) which may be biased to different potentials as a function of the luminophore elements to be excited. The screen also includes focussing conductive bands (19,29) which are aligned and preferably centred with the insulating bands. The focussing bands have widths which are less than those of the insulating bands. The focussing bands may be biased to either a negative voltage, or zero voltage. The thickness of the insulating bands (8) is between 1 and 5 micrometres, whilst the width of the focussing bands is 20 - 60% of this size.
Abstract:
PCT No. PCT/FR95/00997 Sec. 371 Date Jun. 24, 1996 Sec. 102(e) Date Jun. 24, 1996 PCT Filed Jul. 25, 1995 PCT Pub. No. WO96/03765 PCT Pub. Date Feb. 8, 1996A method of fabricating an anode of a flat display screen that includes at least three series of alternated parallel strips of anode conductors is available. For each series of anode conductor strips, there is a single electrically connection pad, each pad being accessible through conductive paths from a same surface level of the anode.
Abstract:
The screen has an anode (5) with luminophores (7r,7g,7b) on at least two sets of conductive strips (9) which are bombarded with electrons from micropoints (2) of the cathode (1). The control introduces phases of regeneration during which the anode is at low potential while the corresponding cathode is biased in an emissive condition. The regenerative phases are interspersed among the display phases within a repetitive cycle whereby the red, green and blue subframe periods follow one another with a regenerative period between each blue and the next red.
Abstract:
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:
L'invention concerne un procédé de formation d'une couche d'oxyde de zinc ou d'indium à la surface de luminophores déposés par sérigraphie sur un substrat, comprenant les étapes consistant à ajouter les grains à une solution de liant de sérigraphie dans de l'eau, dissoudre dans la solution un nitrate de zinc ou d'indium, procéder au dépôt par sérigraphie, et recuire.
Abstract translation:在沉积在基底上的发光体的表面上形成氧化锌或氧化铟层包括将发光体颗粒添加到含有溶解的硝酸锌或硝酸铟的水溶液中,聚乙烯醇(serigraphic binder)和消泡剂在水,沉积和 退火。 将1-0.6g硝酸盐和6-10g发光体溶于10g溶液中。 发光体选自以下:Gd 2 O 2 S:Tb,Y2SiO 5:Tb,Y2SiO 5:Ce,Y 2 O 3 :Eu和ZnO:Zn。 退火在400-500摄氏度进行数小时。
Abstract:
The invention concerns a display screen free from screen pattern, characterised in that the intermediate subassembly transparency, through which observation is carried out, is substantially constant at the scale of a subassembly anode. The intermediate subassembly patterns have a sufficiently low periodicity in at least one direction. The invention is applicable to the production of display screens, for instance with micropins.
Abstract:
L'invention concerne une connexion électrique entre l'espace interne d'un écran plat et l'extérieur au moyen d'une ligne conductrice de faible épaisseur sous-jacente à un joint périphérique de scellement (7) sensiblement plus épais, comportant une structure ajourée favorisant sa dilatation.