Brian B Collins

US Patent:

55019285, Mar 26, 1996

Filed:

Dec 14, 1994

Appl. No.:

8/355563

Inventors:

Pabitra Datta - Cranbury NJ
Eugene S. Poliniak - Willingboro NJ
Peter M. Ritt - East Petersburg PA
Brian T. Collins - Lancaster PA
Harry R. Stork - Adamstown PA

Assignee:

Thomson Consumer Electronics, Inc. - Indianapolis IN

International Classification:

G03C 500
H01J 938
B65D 302
B65D 506

US Classification:

430 23

Abstract:

A method of manufacturing a luminescent screen assembly on an interior surface of a faceplate panel 12 for a color CRT 10 includes the steps of uniformly applying a solution of a material to form an organic conductive (OC) layer and overcoating the OC layer with a solution to form an organic photoconductive (OPC) layer, on the interior surface of the faceplate panel. The OPC layer 34 is conditioned by directing a stream of dry gas thereon to warm the OPC layer to a preheat temperature, while maintaining the panel at a panel temperature less than the preheat temperature. The OPC layer is exposed to IR radiation to rapidly increase the temperature of the OPC layer to a curing temperature, greater than the preheat temperature, to remove some of the volatilizable constituents from the OPC layer, without substantially increasing the temperature of the panel. The OPC layer is then cooled by directing at least one stream of cool gas onto the surface thereof, to lower the temperature of the OPC layer to a subsequent processing temperature.

US Patent:

61874876, Feb 13, 2001

Filed:

Feb 16, 2000

Appl. No.:

9/485837

Inventors:

James Regis Matey - Mercerville NJ
Eugene Samuel Poliniak - Willingboro NJ
Brian Thomas Collins - Lititz PA
Peter Michael Ritt - East Petersburg PA

International Classification:

H01J 9227

US Classification:

430 23

Abstract:

A method for developing an electrostatic latent charge image formed on a photoreceptor 36 which is disposed on an interior surface of a faceplate panel 12 of a CRT 10 utilizes a developer 40 having a developing chamber 42 with a sidewall 50 closed by a bottom end 44 and a panel support 46 at the other end. An opening 48 is formed through the panel support 46 to provide access to and support for the faceplate panel 12. A panel grid 74 is disposed in proximity to said interior surface of said faceplate panel 12 and operated at a first potential to control the electric field from the latent charge image. A tank grid 56 is disposed within said developer 40 and spaced from the sidewall 50, the bottom 44 and the panel grid 74. A triboelectric gun 84 is disposed within the developer 40 for imparting a desired charge polarity to the screen structure material and for distributing the charged screen structure material onto the latent charge image. An electrometer 66 and a phosphor deposition monitor 90 monitor the deposition of the charged screen structure material onto the latent charge image; and a controller 68 terminates the deposition of the charged screen structure material when sufficient material is deposited.

US Patent:

55544681, Sep 10, 1996

Filed:

Apr 27, 1995

Appl. No.:

8/430004

Inventors:

Pabitra Datta - Cranbury NJ
Eugene S. Poliniak - Willingboro NJ
Brian T. Collins - Lancaster PA
Harry R. Stork - Adamstown PA
Peter M. Ritt - East Petersburg PA
Edward R. Garrity - Lancaster PA
Richard LaPeruta - Lititz PA
George M. Ehemann - Lancaster PA

Assignee:

Thomson Consumer Electronics, Inc. - Indianapolis IN

International Classification:

G03G 500
G03G 506

US Classification:

430 28

Abstract:

In accordance with the present invention, a method of electro-photographically manufacturing a luminescent screen assembly on an interior surface of a faceplate panel 12 for a color CRT 10 includes the steps of coating the interior surface of the faceplate panel with a volatilizable, organic conductive solution to form an organic conductive (OC) layer 32, and overcoating the OC layer with a volatilizable, organic photoconductive solution to form an organic photoconductive (OPC) layer 34. The step of overcoating the OC layer to form the OPC layer is improved by the substeps of: grounding the OC layer; providing an organic photoconductive (OPC) solution comprising a resin, an electron donor material and electron acceptor material, and a suitable solvent; and spraying electrostatically-charged droplets of the OPC solution onto the OC layer, with at least one electrostatic spray gun 47, to provide an OPC layer, having uniform thickness, overlying the OC layer.