EP 0485718 B1 19940608 - Process for lacquering a phosphor layer of a colour display tube.
Title (en)
Process for lacquering a phosphor layer of a colour display tube.
Title (de)
Verfahren zum Lackieren der Leuchtstoffschicht einer Farbbildröhre.
Title (fr)
Procédé de vernissage d'une couche luminescente sur un tube cathodique en couleurs.
Publication
Application
Priority
DE 4036239 A 19901114
Abstract (en)
[origin: EP0485718A2] In a process for lacquering the phosphor layer on the bowl of a colour display tube (colour picture tube) screen, the following steps are performed: - the phosphor layer is first pre-wetted, - a first aqueous dispersion of a lacquer is applied to the pre-wetted phosphor layer, - said first dispersion is completely dried and heated to above the film-forming temperature of the lacquer in order to produce a first lacquer film, - a second aqueous dispersion containing identical components to the first dispersion is applied directly to the first lacquer film, the concentration of the components in the second dispersion being at least essentially equal to the concentration of the components in the first dispersion, and - said second dispersion is completely dried and heated to above the film-forming temperature of the lacquer in order to produce a second lacquer film. This double lacquering process enables screen brightnesses to be achieved which are about 10% higher than were achievable with the hitherto conventional, single lacquering process. <IMAGE>
IPC 1-7
IPC 8 full level
H01J 9/227 (2006.01); B05D 1/00 (2006.01); B05D 7/00 (2006.01); H01J 29/28 (2006.01)
CPC (source: EP US)
B05D 1/002 (2013.01 - EP US); B05D 7/546 (2013.01 - EP US); H01J 29/28 (2013.01 - EP US)
Designated contracting state (EPC)
AT DE ES FR GB IT NL
DOCDB simple family (publication)
EP 0485718 A2 19920520; EP 0485718 A3 19930203; EP 0485718 B1 19940608; AT E107080 T1 19940615; DE 4036239 A1 19920521; DE 59101862 D1 19940714; ES 2057699 T3 19941016; JP 3025079 B2 20000327; JP H04284330 A 19921008; US 5334410 A 19940802
DOCDB simple family (application)
EP 91116084 A 19910921; AT 91116084 T 19910921; DE 4036239 A 19901114; DE 59101862 T 19910921; ES 91116084 T 19910921; JP 29931091 A 19911114; US 78817191 A 19911105