HARRY R STORK JR
Vehicle Board in Adamstown, PA

5474867, Dec 12, 1995

Sep 16, 1994

8/305952

Peter M. Ritt - E. Petersburg PA
Charles M. Wetzel - Lititz PA
Harry R. Stork - Adamstown PA
John J. Moscony - Lancaster PA

Thomson Consumer Electronics, Inc. - Indianapolis IN

G03C 500

430 23

In accordance with the present invention, a method of electro-photographically 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. 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, screen structure materials; fixing the screen structure materials to the underlying OPC layer with a suitable fixative; filming the screen structure materials; aluminizing the screen; and baking the aluminized screen. The present method is an improvement over prior methods because the relative humidity (RH) during the charging step is maintained above a humidity level below which the performance of the OC layer is negatively impacted by a reduction in its ion transfer mobility which makes it difficult to apply a usable corona charge to the overlying OPC layer, and below a humidity level above which the OC layer swells causing cracking in the OPC layer. Additionally, the RH during the development step is maintained below a humidity above which the screen structure materials can absorb water and macro-agglomerate, thereby changing the charge-to-mass ration of the screen structure materials to a value which adversely affects the deposition thereof.

5474866, Dec 12, 1995

Aug 30, 1994

8/297740

Peter M. Ritt - East Petersburg PA
Harry R. Stork - Adamstown PA
Brian T. Collins - Exton PA
Pabitra Datta - Cranbury NJ
Nitin V. Desai - Princeton Jct. NJ
Eugene S. Poliniak - Willingboro NJ

Thomson Consumer Electronics, Inc. - Indianapolis IN

G03C 500

430 23

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.

5501928, Mar 26, 1996

Dec 14, 1994

8/355563

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

Thomson Consumer Electronics, Inc. - Indianapolis IN

G03C 500, H01J 938, B65D 302, B65D 506

430 23

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.

5554468, Sep 10, 1996

Apr 27, 1995

8/430004

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

Thomson Consumer Electronics, Inc. - Indianapolis IN

G03G 500, G03G 506

430 28

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.

5135826, Aug 4, 1992

Apr 29, 1991

7/692967

Peter M. Ritt - East Petersburg PA
Harry R. Stork - Adamstown PA
Pabitra Datta - Cranbury NJ

RCA Thomson Licensing Corp. - Princeton NJ

G03G 1322, G03C 500

430 28

The method of electrophotographically manufacturing a luminescent screen assembly on a substrate for use within a CRT, according to the present invention, includes the steps of: forming a conductive layer on the substrate; overcoating the conductive layer with a photoconductive solution comprising an organic polymeric material, a suitable photoconductive dye, a plasticizer and a solvent to form a photoconductive layer; and, then, establishing an electrostatic charge on the photoconductive layer. Selected areas of the photoconductive layer are exposed to visible light to affect the charge thereon, and the photoconductive layer is developed with charged screen structure material. The improved method utilizes a dialkyl phthalate plasticizer which is selected from the group consisting of dibutylphthalate (DBP), dioctylphthalate (DOP), and diundecylphthalate (DUP).

5151337, Sep 29, 1992

Jun 26, 1990

7/543309

Charles M. Wetzel - Lititz PA
Peter M. Ritt - East Petersburg PA
Owen H. Roberts - Landisville PA
Harry R. Stork - Adamstown PA

RCA Thomson Licensing Corp. - Princeton NJ

G03C 500

430 28

The method of electrophotographically manufacturing a luminescent screen on a substrate of a color CRT, according to the present invention, includes the steps of forming a photoreceptor by sequentially coating the substrate to form a conductive layer and an overcoating of a photoconductive layer, establishing an electrostatic charge on the photoconductive layer, and exposing selected areas of the photoconductive layer to visible light to affect the charge thereon. Then the photoconductive layer is developed by the application of suitable triboelectrically charged, dry-powdered screen structure materials. The improved process provides at least one wear-resistant, conductive contact patch on a peripheral portion of a surface of the substrate. The contact patch has a first portion which underlies at least one of the layers of the photoreceptor and is in electrical contact with the conductive layer, and a second portion which extends from the photoreceptor. The contact patch is utilized during the manufacturing process to electrically ground the conductive layer during charging of the photoconductive layer.

5407765, Apr 18, 1995

Dec 22, 1993

8/168488

Brian T. Collins - Lancaster PA
Harry R. Stork - Adamstown PA
Peter M. Ritt - East Petersburg PA

Thomson Consumer Electronics, Inc. - Indianapolis IN

G03C 500

430 28

The method of electrophotographically manufacturing a screen assembly on an interior surface of a viewing faceplate of a panel for a color CRT, according to the present invention, includes the steps of forming a volatilisable organic conductive layer on the interior surface of the viewing faceplate and overcoating the organic conductive layer with an organic photoconductive solution to form a volatilizable organic photoconductive layer. The conductive solution, comprising a polyelectrolyte and a diluent, is applied to the interior surface of the viewing faceplate by spraying, to form the conductive layer.

5156770, Oct 20, 1992

Jun 26, 1990

7/543314

Charles M. Wetzel - Lititz PA
Peter M. Ritt - East Petersburg PA
Owen H. Roberts - Landisville PA
Harry R. Stork - Adamstown PA

Thomson Consumer Electronics, Inc. - Indianapolis IN

H01B 106, H01J 3100

252510

A solution for making a wear-resistant conductive contact patch for a faceplate panel of a color CRT which facilitates the electrophotographic manufacturing of a luminescent screen on the panel consists essentially of, in weight percent, solvent 22 to 70, conductive material 62 to 21, and the balance being other compatible additives.

5477285, Dec 19, 1995

Oct 6, 1993

8/132263

Pabitra Datta - West Windsor NJ
Ronald N. Friel - Hamilton Square NJ
Dennis R. McCarthy - Jamison PA
John J. Moscony - Lancaster PA
Eugene S. Poliniak - Willingboro NJ
Peter M. Ritt - East Petersburg PA
Robert E. Simms - Cream Ridge NJ
Carl C. Steinmetz - Mercerville NJ
Harry R. Stork - Adamstown PA
Charles M. Wetzel - Lititz PA

Thomson Consumer Electronics, Inc. - Indianapolis IN

G03B 4100, G03C 500

354 1

In accordance with the present invention, an apparatus for developing a latent image formed on a photoreceptor, which is deposited on an interior surface of an output window of a display device, is disclosed. The developing apparatus includes a developing chamber, having a support surface for supporting the output window, a screen structure material reservoir for storing, deagglomerating and feeding the screen structure material, and a triboelectric gun assembly communicating with the reservoir. The gun assembly triboelectric charges and imparts a desired charge polarity to the screen structure material. The gun assembly further includes at least one material dispersing nozzle spaced from the support surface for distributing the charged material for deposition onto the latent image.

5807435, Sep 15, 1998

Mar 13, 1997

8/816533

Eugene Samuel Poliniak - Willingboro NJ
Peter Michael Ritt - East Petersburg PA
Brian Thomas Collins - Lititz PA
Richard LaPeruta - Lititz PA
Harry Robert Stork - Adamstown PA

Thomson Consumer Electronics, Inc. - Indianapolis IN

B05C 1111

118504

A spray module 40 for manufacturing a cathode-ray tube (CRT) 10 comprises an enclosure 42 having sidewalls 44, a base 46 attached to the sidewalls 44, for closing one end thereof, and a panel support 48 having an opening, 50 therethrough. The panel support 48 is attached to an opposite end of the sidewalls 44. The spray module 40 has at least one electrostatic spray gun 36 therein for spraying charged screen structure material through the opening 50 in the panel support 48 and onto an interior surface of a faceplate panel 12 of the CRT 10. The spray module 40 includes a primary shield assembly 55 disposed within the enclosure 42 and extending through the opening 50 in the panel support 48. A secondary shield assembly 56 also is disposed within the enclosure 42 The primary and secondary shield assemblies 55 and 56, respectively, direct the charged screen structure material toward the interior surface of the panel 12, thereby increasing the transfer efficiency of the spray gun 36. A collecting tray 54 also is utilized to catch the spent spray which falls to the bottom of the spray module 40.