Electric lamp and discharge devices – Cathode ray tube – Screen
Patent
1989-12-22
1991-04-30
O'Shea, Sandra L.
Electric lamp and discharge devices
Cathode ray tube
Screen
313466, 313468, H01J 2910, H01J 2928
Patent
active
050121553
ABSTRACT:
The method of surface-treating dry-powdered phosphor particles for use in manufacturing a viewing screen for a CRT to control the triboelectric charge characteristics of the phosphor particles includes the steps of dissolving a suitable quantity of a polymeric coupling agent in a suitable solvent to form a mixture, surface-treating the phosphor particles by adding them to the mixture to provide a coating of the coupling agent thereon, and then drying the surface-treated phosphor particles. The resultant dry-powdered surface-treated phosphor particles are used to make a luminescent viewing screen for a CRT. The coupling agent controls the triboelectric charge characteristics of the phosphor particles during the electrophotographic manufacturing of the screen.
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Datta Pabitra
Friel Ronald N.
Thompson Robert P.
Coughlin Jr. Vincent J.
Irlbeck Dennis H.
O'Shea Sandra L.
RCA Licensing Corp.
Tripoli Joseph S.
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