Method for forming a black matrix on a faceplate panel for a col

Radiation imagery chemistry: process – composition – or product th – Producing cathode-ray tube or element thereof – With light-absorbing matrix on faceplate

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430 23, 430 28, 430 29, 430114, 430118, 430119, G03C 500, G03G 1322, G03G 1310

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active

058404503

ABSTRACT:
The black matrix of the faceplate panel is deposited by a wet-layer photoconductive manner. An organic conductive layer is initially deposited on the faceplate panel, on which an organic photoconductive material is formed to form an organic photoconductive layer. The photoconductive layer is charged to positive or negative potential and a selective area of the organic photoconductive layer is exposed to light radiated from an exposure device, such that the potential can be left on the unexposed area, where the black matrix will be deposited, of the organic photoconductive layer. Then, As novel steps, deposition of the conductive black matrix is achieved according to the following steps. First, a conductive black matrix material is charged having the opposite potential to that left on the unexposed area of the organic photoconductive layer. The black matrix material having the opposite potential is then deposited on the outer surface of a developer having a configuration equal to that of the inner surface of the faceplate panel by dipping the developer into the black matrix material. Finally the outer surface of the developer, on which the black matrix material is deposited, contacts the inner surface of the faceplate panel, thereby forming the black matrix on the organic photoconductive layer.

REFERENCES:
patent: 3096198 (1963-07-01), Schaffert
patent: 4095134 (1978-06-01), Strik
patent: 4448866 (1984-05-01), Olieslagers et al.
patent: 4907532 (1990-03-01), Mikelsons et al.
patent: 5455133 (1995-10-01), Gorog et al.
patent: 5519217 (1996-05-01), Wilbur, Jr. et al.
Patent & Trademark Office English Translation of JP 49-42702 (Pub Nov. 1974).

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