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公开(公告)号：EP0970500B1
公开(公告)日：2005-10-26
申请号：EP98908951.1
申请日：1998-03-05
发明人： POLINIAK, Eugene, Samuel , RITT, Peter, Michael , COLLINS, Brian, Thomas , LaPERUTA, Richard, Jr. , STORK, Harry, Robert
摘要： A spray module 40 for manufacturing a cathode-ray tube (CRT) 10 comprises an enclosure 42 having sidewalls 44, a base 46 attached to the sidewalls 44, for closing one end thereof, and a panel support 48 having an opening, 50 therethrough. The panel support 48 is attached to an opposite end of the sidewalls 44. The spray module 40 has at least one electrostatic spray gun 36 therein for spraying charged screen structure material through the opening 50 in the panel support 48 and onto an interior surface of a faceplate panel 12 of the CRT 10. The spray module 40 includes a primary shield assembly 55 disposed within the enclosure 42 and extending through the opening 50 in the panel support 48. A secondary shield assembly 56 also is disposed within the enclosure 42 The primary and secondary shield assemblies 55 and 56, respectively, direct the charged screen structure material toward the interior surface of the panel 12, thereby increasing the transfer efficiency of the spray gun 36. A collecting tray 54 also is utilized to catch the spent spray which falls to the bottom of the spray module 40. The tray 54 is inclined toward a drain 100 that directs the spent material out of the spray module 40.
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公开(公告)号：EP0970500A1
公开(公告)日：2000-01-12
申请号：EP98908951.1
申请日：1998-03-05
发明人： POLINIAK, Eugene, Samuel , RITT, Peter, Michael , COLLINS, Brian, Thomas , LaPERUTA, Richard, Jr. , STORK, Harry, Robert
摘要： A spray module 40 for manufacturing a cathode-ray tube (CRT) 10 comprises an enclosure 42 having sidewalls 44, a base 46 attached to the sidewalls 44, for closing one end thereof, and a panel support 48 having an opening, 50 therethrough. The panel support 48 is attached to an opposite end of the sidewalls 44. The spray module 40 has at least one electrostatic spray gun 36 therein for spraying charged screen structure material through the opening 50 in the panel support 48 and onto an interior surface of a faceplate panel 12 of the CRT 10. The spray module 40 includes a primary shield assembly 55 disposed within the enclosure 42 and extending through the opening 50 in the panel support 48. A secondary shield assembly 56 also is disposed within the enclosure 42 The primary and secondary shield assemblies 55 and 56, respectively, direct the charged screen structure material toward the interior surface of the panel 12, thereby increasing the transfer efficiency of the spray gun 36. A collecting tray 54 also is utilized to catch the spent spray which falls to the bottom of the spray module 40. The tray 54 is inclined toward a drain 100 that directs the spent material out of the spray module 40.
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公开(公告)号：EP0778981B1
公开(公告)日：1999-03-17
申请号：EP95927565.2
申请日：1995-08-03
CPC分类号： H01J9/225 , H01J9/2276
摘要： In accordance with the present invention, a method of electrophotographically manufacturing a luminescent screen assembly on an interior surface of a faceplate panel (12) of a color CRT (10) comprises the steps of coating the interior surface of the panel with a volatilizable, organic conductive material to form an organic conductive (OC) layer (32), and overcoating the OC layer with a volatilizable, photoconductive material to form an organic photoconductive (OPC) layer (34). Then, a substantially uniform voltage is established on the OPC layer, and selected areas of the OPC layer are exposed to visible light to affect the voltage thereon, without affecting the voltage on the unexposed area of the OPC layer. Next, triboelectrically charged, light-absorbing screen structure material is deposited onto the unexposed area of the OPC layer to form a substantially continuous matrix (23) of light-absorbing material having open areas therein. The present method is an improvement over prior methods in that the present method includes the additional steps of forming a planarizing layer (35, 135) on the OPC layer; overcoating the planarizing layer with a second coating of the volatilizable, organic conductive material to form a second OC layer (132), and then overcoating the second OC layer with a second coating of the volatilizable, organic photoconductive material to form a second OPC layer (134). The phosphor materials are deposited onto a suitable charged and exposed second OPC layer so that the phosphors completely overlie the openings in the matrix and overlap at least a portion of the matrix adjacent to the openings.
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公开(公告)号：EP0778981A1
公开(公告)日：1997-06-18
申请号：EP95927565.0
申请日：1995-08-03
CPC分类号： H01J9/225 , H01J9/2276
摘要： In accordance with the present invention, a method of electrophotographically manufacturing a luminescent screen assembly on an interior surface of a faceplate panel (12) of a color CRT (10) comprises the steps of coating the interior surface of the panel with a volatilizable, organic conductive material to form an organic conductive (OC) layer (32), and overcoating the OC layer with a volatilizable, photoconductive material to form an organic photoconductive (OPC) layer (34). Then, a substantially uniform voltage is established on the OPC layer, and selected areas of the OPC layer are exposed to visible light to affect the voltage thereon, without affecting the voltage on the unexposed area of the OPC layer. Next, triboelectrically charged, light-absorbing screen structure material is deposited onto the unexposed area of the OPC layer to form a substantially continuous matrix (23) of light-absorbing material having open areas therein. The present method is an improvement over prior methods in that the present method includes the additional steps of forming a planarizing layer (35, 135) on the OPC layer; overcoating the planarizing layer with a second coating of the volatilizable, organic conductive material to form a second OC layer (132), and then overcoating the second OC layer with a second coating of the volatilizable, organic photoconductive material to form a second OPC layer (134). The phosphor materials are deposited onto a suitable charged and exposed second OPC layer so that the phosphors completely overlie the openings in the matrix and overlap at least a portion of the matrix adjacent to the openings.
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