Radiation imagery chemistry: process – composition – or product th – Producing cathode-ray tube or element thereof
Patent
1994-08-30
1995-12-12
Rosasco, S.
Radiation imagery chemistry: process, composition, or product th
Producing cathode-ray tube or element thereof
430 24, 430 25, 430 28, G03C 500
Patent
active
054748666
ABSTRACT:
In accordance with the present invention, a method of electrophotographically manufacturing a luminescent screen assembly for a color CRT 10 on an interior surface of a faceplate panel 12 is described. A volatilizable organic conductive (OC) layer 32 is provided on the interior surface of the panel and a volatilizable organic photoconductive (OPC) layer 34 overlies the OC layer 32. The method includes the steps of: establishing a substantially uniform electrostatic charge on the OPC layer; exposing selected areas of the OPC layer to visible light to affect the charge thereon; developing the selected areas of the OPC layer with a triboelectrically charged, dry-powdered, first color-emitting phosphor; sequentially repeating the charging, exposing and developing sequence for triboelectrically charged, dry-powdered, second and third color-emitting phosphors to form a luminescent screen comprising picture elements of triads of color-emitting phosphors; fixing the phosphors to the underlying OPC layer with a suitable fixative; filming the phosphors; and aluminizing the filmed phosphors. The present method is an improvement over prior methods because the fixing step utilizes an electrostatic spray to uniformly contact the phosphors and the underlying OPC layer with the fixative, without moving the phosphors.
REFERENCES:
patent: 3558310 (1971-01-01), Mayaud
patent: 3811910 (1974-05-01), Labana et al.
patent: 4917978 (1990-04-01), Ritt et al.
patent: 5028501 (1991-07-01), Ritt et al.
patent: 5083959 (1992-01-01), Datta et al.
patent: 5229233 (1993-07-01), Riddle et al.
patent: 5240798 (1993-08-01), Ehemann, Jr.
Collins Brian T.
Datta Pabitra
Desai Nitin V.
Poliniak Eugene S.
Ritt Peter M.
Coughlin Jr. Vincent J.
Irlbeck Dennis H.
Rosasco S.
Thomson Consumer Electronics Inc.
Tripoli Joseph S.
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