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1. (WO1997019460) FLAT PANEL DISPLAY WITH REDUCED ELECTRON SCATTERING EFFECTS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/019460 International Application No.: PCT/US1996/018773
Publication Date: 29.05.1997 International Filing Date: 20.11.1996
Chapter 2 Demand Filed: 09.06.1997
IPC:
H01J 29/08 (2006.01) ,H01J 31/12 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
J
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
29
Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/113
02
Electrodes; Screens; Mounting, supporting, spacing, or insulating thereof
08
Electrodes intimately associated with a screen on or from which an image or pattern is formed, picked-up, converted or stored, e.g. backing-plates for storage tubes or electrodes for collecting secondary electrons
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
J
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
31
Cathode-ray tubes; Electron-beam tubes
08
having a screen on or from which an image or pattern is formed, picked-up, converted, or stored
10
Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
12
with luminescent screen
Applicants:
CANDESCENT TECHNOLOGIES CORPORATION [US/US]; 6580 Via del Oro San Jose, CA 95119, US
Inventors:
SPINDT, Christopher, J.; US
FIELD, John, E.; US
HAVEN, Duane, A.; US
Agent:
DAVIS, Paul; Wilson, Sonsini, Goodrich & Rosati 650 Page Mill Road Palo Alto, CA 94304-1050, US
Priority Data:
08/560,16620.11.1995US
Title (EN) FLAT PANEL DISPLAY WITH REDUCED ELECTRON SCATTERING EFFECTS
(FR) AFFICHEUR A ECRAN PLAT A EFFETS DE DIFFUSION D'ELECTRONS REDUITS
Abstract:
(EN) A flat panel display is disclosed which includes a faceplate with a faceplate interior side, and a backplate including a backplate interior side in an opposing relationship to the faceplate interior side. Side walls are positioned between the faceplate and the backplate. The side walls, faceplate and backplate form an enclosed sealed envelope. A plurality of phosphor subpixels are positioned at the faceplate interior side. A plurality of field emitters are positioned at the backplate interior side. The field emitters emit electrons which strike corresponding phosphor subpixels. A plurality of scattering shields surround each phosphor subpixel and define a subpixel volume. The scattering shields reduce the number of scattered electrons exiting from their corresponding subpixel volume. This reduces the number of scattered electrons from charging internal insulating surfaces in the envelope, as well as striking the non-corresponding phosphor subpixels.
(FR) L'invention concerne un afficheur à écran plat comprenant une plaque frontale présentant une face intérieure, et une plaque arrière présentant une face intérieure située en regard de la face intérieure de la plaque frontale. Des parois latérales sont positionnées entre la plaque frontale et la plaque arrière. Les parois latérales, la plaque frontale et la plaque arrière forment une enveloppe hermétiquement fermée. Une pluralité de sous-pixels luminophores sont positionnés sur la face intérieure de la plaque frontale. Une pluralité d'émetteurs à effet de champ sont positionnés sur la face intérieure de la plaque arrière. Les émetteurs à effets de champ émettent des électrons qui viennent heurter les sous-pixels luminescents correspondants. Une pluralité de blindages anti-diffusion entourent chaque sous-pixel luminescent et définissent un volume de sous-pixel. Les blindages anti-diffusion réduisent le nombre d'électrons diffusés sortant de leur volume de sous-pixel correspondant. On réduit ainsi le nombre d'électrons diffusés chargeant les surfaces isolantes intérieures de l'enveloppe, et heurtant les sous-pixels luminescents correspondants.
Designated States: JP
European Patent Office (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)
Also published as:
EP0862785JP2000500613