Steven Anthony Colbert

US Patent:

6674224, Jan 6, 2004

Filed:

Mar 6, 2001

Appl. No.:

09/800234

Inventors:

Kevin Duane Close - Landisville PA
Steven Anthony Colbert - Lancaster PA
Richard LaPeruta, Jr. - Lititz PA
David Paul Ciampa - Lancaster PA
Samuel Paul Benigni - Lititz PA

Assignee:

Thomson Licensing S.A. - Boulogne Cedex

International Classification:

H01J 2980

US Classification:

313402, 313407, 313408, 313477 R

Abstract:

A color cathode-ray tube (CRT) having an evacuated envelope with an electron gun therein for generating at least one electron beam is disclosed. The envelope further includes a faceplate panel having a luminescent screen with phosphor lines on an interior surface thereof. A tension focus mask, having a plurality of spaced-apart first electrodes, is located adjacent to an effective picture area of the screen. The plurality of spaced-apart first electrodes has a screen-facing side having a predetermined width and a relatively wider electron-gun-facing side. Each side forming sharp corner edges extending along the length of each first electrodes. A substantially continuous insulating material is deposited on the screen-facing side and on the corners of the first electrodes to shield the sharp corner edges of the first electrodes. A plurality of second electrodes are oriented substantially perpendicular to the plurality of first electrodes and are bonded thereto by the insulating material layer.

US Patent:

6819040, Nov 16, 2004

Filed:

Feb 27, 2003

Appl. No.:

10/375416

Inventors:

Farzad Parsapour - Reading PA
Bhanumurthy Venkatrama Subrahmanya Gunturi - Lancaster PA
Steven Anthony Colbert - Lancaster PA
Brian Thomas Collins - Lititz PA

Assignee:

Thomson Licensing S. A. - Boulogne-Billancourt

International Classification:

H01J 2988

US Classification:

313479, 313466

Abstract:

A composition and method of forming an internal neutral density filter on a luminescent screen assembly of a cathode ray tube (CRT) is disclosed. The luminescent screen assembly is formed on an interior surface of a glass faceplate panel of the CRT tube. The luminescent screen assembly includes a patterned light-absorbing matrix that defines three sets of fields corresponding to one of a blue region, a green region and a red region. An internal neutral density filter is formed on the light-absorbing matrix. An array of blue, green and red color phosphors is formed on the internal neutral density filter corresponding to one of the blue region, the green region and the red region defined in the light-absorbing matrix. The internal neutral density filter has a composition including a red pigment, a blue pigment and at least one non-pigmented oxide particle.

US Patent:

20030099772, May 29, 2003

Filed:

Nov 20, 2001

Appl. No.:

09/988513

Inventors:

Steven Colbert - Lancaster PA, US
Kangning Liang - Lancaster PA, US

International Classification:

B05D005/12
B05D001/32
B05D003/02
B05D001/36

US Classification:

427/282000, 427/068000, 427/384000, 427/407100, 427/402000

Abstract:

A method of manufacturing a luminescent screen assembly for a color cathode-ray tube (CRT). The luminescent screen assembly is formed on an interior surface of a faceplate panel of the CRT. The luminescent screen assembly includes an organic conductive (OC) layer overcoated with an organic photoconductive (OPC) layer. Different color-emitting phosphors are sequentially deposited over portions of the OPC layer and fixed with an appropriate fixative to secure the phosphors to the OPC layer, and then filmed to provide a smooth surface upon which a metal layer is applied. Thereafter, the metallized screen is baked to drive-off organic constituents remaining on the screen from the OPC, OC, filming and overspray layers. The organic constituents are removed from the metallized screen by volatilizing the organic materials such that the volume rate of gaseous organic constituents produced is less than the diffusion rate of such gaseous organic constituents through the metal layer.

US Patent:

63261103, Dec 4, 2001

Filed:

Aug 23, 1999

Appl. No.:

9/379161

Inventors:

Pabitra Datta - late of Cranbury NJ
Diane Gerofsky - Mercer County NJ
Gregory James Cohee - Newtown PA
Nitin Vithalbhi Desai - Princeton Junction NJ
Steven Anthony Colbert - Lancaster PA
Kangning Liang - Lancaster PA

Assignee:

Thomson Licensing S.A. - Boulogne Cedex

International Classification:

G03G 1300

US Classification:

430 23

Abstract:

In accordance with the present invention, a method of electrophotographically manufacturing a luminescent screen assembly on an interior surface of a faceplate panel 17 of a color CRT 10 includes the steps of: coating the surface of the panel with a conductive solution to form a volatilizable organic conductive layer 32, and overcoating the organic conductive layer 32 with a photoconductive solution to form a volatilizable photoconductive layer 34. The conductive solution comprises the organic polymer 3,4-polyethylene dioxythiophene polystyrene sulphonate (PEDT/PSS); a methanol-soluble polymer or co-polymer selected from the group consisting of polyvinylpyrrolidone (PVP), poly (vinyl pyridine-co-vinyl acetate) (PVPy-VAc), polymethacrylic acid (PMAA), poly (hydroxyethylacrylate-co-methacrylic acid) (PHEA-MAA) and poly (hydroxyethyl methacrylate) (PHEMA) to reduce organic residue; and a solvent.