Film forming apparatus
First Claim
1. A film forming apparatus for supplying a coating solution from a discharge nozzle to a substrate to form a film on a front face of said substrate, wherein said discharge nozzle comprises a substantially cylindrical support member and a thin plate, supported on a face on a substrate side of said support member, for closing the face on the substrate side, and wherein said thin plate is provided with a discharge port for discharging said coating solution to said substrate.
1 Assignment
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Accused Products
Abstract
A discharge nozzle in a film forming apparatus of the present invention includes a substantially cylindrical support member and a thin plate or a thin plate portion supported on a face on a substrate side of the support member and closing the face on the substrate side, and a discharge port for discharging a coating solution is provided in the thin plate or the thin plate portion. It is possible to form a smaller discharge port in the thin plate or the thin plate portion by laser processing, punching, or the like than that obtainable by conventional injection molding processing. An amount of discharge and a discharge area on the substrate of the coating solution can be controlled more precisely. The film forming apparatus of the present invention includes a cleaning device for cleaning the discharge nozzle which includes a cleaning solution jet port for jetting a cleaning solution for cleaning to the discharge port of the discharge nozzle and a suction port for sucking an atmosphere in the vicinity of the discharge port. Contaminants adhering to the discharge port are removed more completely than before. Accordingly, the cleaning can be conducted effectively even if the diameter of the discharge port is very small. The suction port can suck and drain properly the cleaning solution jetted to the discharge port, preventing scatter of the cleaning solution and contamination around the discharge port.
16 Citations
51 Claims
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1. A film forming apparatus for supplying a coating solution from a discharge nozzle to a substrate to form a film on a front face of said substrate,
wherein said discharge nozzle comprises a substantially cylindrical support member and a thin plate, supported on a face on a substrate side of said support member, for closing the face on the substrate side, and wherein said thin plate is provided with a discharge port for discharging said coating solution to said substrate.
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17. A film forming apparatus for supplying a coating solution from a discharge nozzle to a substrate to form a film on a front face of said substrate,
wherein said discharge nozzle comprises a substantially cylindrical support member and a thin plate portion, disposed on a face on a substrate side of said support member, for closing the face on the substrate side, wherein said thin plate portion is integrated with a holding member which is attachable and detachable to/from said support member, and wherein said thin plate portion is provided with a discharge port for discharging said coating solution to said substrate.
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29. A film forming apparatus for supplying a coating solution from a discharge nozzle to a substrate to form a film on a front face of said substrate, comprising:
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a cleaning device for cleaning said discharge nozzle, said cleaning device comprising a cleaning solution jet port for jetting a cleaning solution for cleaning to a discharge port of said discharge nozzle and a suction port for sucking an atmosphere in the vicinity of said discharge port. - View Dependent Claims (46, 47, 48, 49, 50, 51)
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30. A film forming apparatus for supplying a coating solution from a discharge nozzle to a substrate to form a film on a front face of said substrate, comprising:
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a cleaning device for cleaning said discharge nozzle, said discharge nozzle comprising a substantially cylindrical support member, a thin plate provided on a lower face of said support member for closing the lower face, and a discharge port formed in said thin plate, said cleaning device comprising a cleaning block including a flat close contact portion closely contacting said thin plate at an upper end, wherein said cleaning block is provided with a cleaning solution jet port for jetting a cleaning solution toward said discharge port of said discharge nozzle and a suction port for sucking an atmosphere in the vicinity of said discharge port when said cleaning block closely contacts said thin plate. - View Dependent Claims (37, 38, 39, 40, 41, 44, 45)
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31. A film forming apparatus for supplying a coating solution from a discharge nozzle to a substrate to form a film on a front face of said substrate, comprising:
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a cleaning device for cleaning said discharge nozzle, said discharge nozzle comprising a substantially cylindrical support member, a thin plate provided on a lower face of said support member for closing the lower face, a discharge port formed in said thin plate, and a holding member for fixing said thin plate to said support member from the outside, said cleaning device comprising a cleaning block including a flat close contact portion closely contacting said holding member at an upper end, wherein said cleaning block is provided with a cleaning solution jet port for jetting a cleaning solution toward said discharge port of said discharge nozzle and a suction port for sucking an atmosphere in the vicinity of said discharge port when said cleaning block closely contacts said holding member. - View Dependent Claims (34, 35, 42, 43)
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32. A film forming apparatus for supplying a coating solution from a discharge nozzle to a substrate to form a film on a front face of said substrate, comprising:
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a cleaning device for cleaning said discharge nozzle in contact with said discharge nozzle, said discharge nozzle comprising a substantially cylindrical support member, a thin plate supported on a lower face of said support member for closing the lower face, and a discharge port with a predetermined diameter formed in said thin plate, said cleaning device comprising a cleaning block including protrusions on a face contacting said thin plate, wherein said cleaning block is provided with a cleaning solution jet port for jetting a cleaning solution toward said discharge port of said discharge nozzle and a suction port for sucking an atmosphere in the vicinity of said discharge port when said cleaning block contacts said thin plate via said protrusions.
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33. A film forming apparatus for supplying a coating solution from a discharge nozzle to a substrate to form a film on a front face of said substrate, comprising:
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a cleaning device for cleaning said discharge nozzle in contact with said discharge port, said discharge nozzle comprising a substantially cylindrical support member, a thin plate supported on a lower face of said support member for closing the lower face, a discharge port formed in said thin plate, and a holding member for fixing said thin plate to said support member from the outside, said cleaning device comprising a cleaning block including protrusions on a face contacting said holding member, wherein said cleaning block is provided with a cleaning solution jet port for jetting a cleaning solution toward said discharge port of said discharge nozzle and a suction port for sucking an atmosphere in the vicinity of said discharge port when said cleaning block contacts said holding member via said protrusions. - View Dependent Claims (36)
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Specification