Thomson Licensing S.a.

Steven Anthony Colbert

Pabitra Datta

Brian Thomas Collins

Richard LaPeruta, Jr

Farzad Parsapour

Edward Richard Garrity, Jr

David Paul Ciampa

Samuel Paul Benigni

Kangning Liang

Gregory James Cohee

Bhanumurthy Venkatrama Subrahmanya Gunturi

Kevin Duane Close

Nitin Vithalbhi Desai

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.

Cathode ray tube having an internal neutral density filter

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.

Tension focus mask for a cathode-ray tube (CRT)

In accordance with the present invention, a method of electrophotographically manufacturing a luminescent screen assembly on an interior surface of a faceplate panel,of a color CRT,includes the steps of: coating the surface of the panel with a conductive solution to form a volatilizable organic conductive layer,, and overcoating the organic conductive layer,with a photoconductive solution to form a volatilizable photoconductive layer,. 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.

Humidity and temperature insensitive organic conductor for electrophotographic screening process

Growing community of inventors

Lancaster, PA, United States of America

Steven Anthony Colbert