Method of manufacturing a cathode ray tube (CRT) having a...

Details Method of manufacturing a cathode ray tube (CRT) having a... Method of manufacturing a cathode ray tube (CRT) having a...

2005-03-15

2005-03-15

Williams, Joseph (Department: 2879)

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

C430S027000, C313S461000

Reexamination Certificate

active

06866556

ABSTRACT:
A method of manufacturing a cathode ray tube (CRT) having a color filter luminescent screen assembly is disclosed. The luminescent screen assembly is formed on an interior surface of a faceplate panel of the CRT tube. The luminescent screen assembly includes a patterned light-absorbing matrix that defines a plurality of sets of fields corresponding to one of a blue region, a red region and a green region. A color filter is formed in one of the plurality of sets of fields. The color filter is formed by applying a photosensitive material layer on the inner surface of the faceplate panel and exposing one of the sets of fields corresponding to the blue region, the red region or the green region, to harden the photosensitive material in such region. A pigment layer, having a color that corresponds to the color of the region of hardened photosensitive material, is then applied over the exposed photosensitive material layer. After the pigment layer is applied, the unhardened photosensitive material layer is removed to form the color filter.

REFERENCES:
patent: 3623867 (1971-11-01), Saulnier
patent: 5478694 (1995-12-01), Maerz et al.
patent: 6300022 (2001-10-01), Kim et al.
patent: 6527842 (2003-03-01), Adams et al.
patent: 1 077 469 (2001-02-01), None
patent: 1 089 313 (2001-04-01), None

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