Plasma processing apparatus
First Claim
1. An apparatus for processing a target object using a plasma, comprising:
- an airtight processing chamber;
a work table having a support surface for supporting said target object in said processing chamber;
upper and lower exhaust systems for jointly evacuating an interior of said processing chamber and jointly exhausting a gas on said target object, said upper and lower exhaust systems flowing gas in said processing chamber upward and downward, respectively;
a gas supply system for supplying a processing gas to said processing chamber; and
an electric field generator for generating, in said processing chamber, an electric field for converting said processing gas into a plasma through discharge.
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Accused Products
Abstract
A plasma etching apparatus has a central processing chamber, an upper exhaust chamber thereabove, and a lower exhaust chamber therebelow. The processing chamber, the upper exhaust chamber, and the lower exhaust chamber are airtightly formed by a central casing part, an upper casing part, and a lower casing part which are separably combined. The upper and lower exhaust chambers are respectively connected to upper and lower exhaust pumps. A susceptor having a support surface for supporting a target object, and an upper electrode or shower head opposing it are arranged in the processing chamber. A processing gas spouted through the shower head flows upward and downward toward the upper and lower exhaust chambers via the processing chamber.
351 Citations
20 Claims
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1. An apparatus for processing a target object using a plasma, comprising:
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an airtight processing chamber; a work table having a support surface for supporting said target object in said processing chamber; upper and lower exhaust systems for jointly evacuating an interior of said processing chamber and jointly exhausting a gas on said target object, said upper and lower exhaust systems flowing gas in said processing chamber upward and downward, respectively; a gas supply system for supplying a processing gas to said processing chamber; and an electric field generator for generating, in said processing chamber, an electric field for converting said processing gas into a plasma through discharge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An apparatus for processing a target object using a plasma, comprising:
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an airtight processing chamber; a work table having a support surface for supporting said target object in said processing chamber; an exhaust system for evacuating an interior of said processing chamber and exhausting a gas on said target object; a gas supply system for supplying a processing gas to said processing chamber; and an electric field generator for generating, in said processing chamber, an electric field for converting said processing gas into a plasma through discharge, wherein said processing chamber, except for said support surface of said work table, is defined by a central casing part having an integrally molded continuous conductive inner wall surface exposed in said processing chamber, said inner wall surface has a ceiling surface and a floor surface corresponding to a ceiling and a floor of said processing chamber, and a potential on said inner wall surface is set substantially uniform, and wherein said ceiling surface has first holes used as part of said gas supply system for supplying said processing gas, and said floor surface has second holes used as part of said exhaust system for evacuating the interior of said processing chamber. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification