Radiation imagery chemistry: process – composition – or product th – Producing cathode-ray tube or element thereof – With light-absorbing matrix on faceplate
Patent
1996-12-24
1998-11-24
Dote, Janis L.
Radiation imagery chemistry: process, composition, or product th
Producing cathode-ray tube or element thereof
With light-absorbing matrix on faceplate
430 23, 430 28, 430 29, 430114, 430118, 430119, G03C 500, G03G 1322, G03G 1310
Patent
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.
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Dote Janis L.
Samsung Display Devices Co. Ltd.
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