PLASMA FILM FORMING APPARATUS AND PLASMA FILM FORMING METHOD
First Claim
1. A plasma film forming apparatus comprising:
- a processing chamber which has its ceiling portion opened and is evacuable;
a mounting table installed in the processing chamber, for mounting thereon a target object to be processed;
a ceiling plate which is airtightly installed at an opening of the ceiling portion and is made of a dielectric material capable of transmitting a microwave;
a gas introduction mechanism for introducing a processing gas including a film formation source gas and a supporting gas into the processing chamber; and
a microwave introduction mechanism which is installed at a ceiling plate'"'"'s side and has a planar antenna member so as to introduce the microwave into the processing chamber,wherein the gas introduction mechanism includes;
a central gas injection hole for the source gas, located above a central portion of the target object;
a plurality of peripheral gas injection holes for the source gas, arranged above a peripheral portion of the target object along a circumferential direction of the target object; and
a plasma shielding member for shielding plasma is installed above an intermediate portion located between the central portion and the peripheral portion of the target object along the circumferential direction thereof.
1 Assignment
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Accused Products
Abstract
A plasma film forming apparatus includes: a processing chamber; a mounting table for mounting thereon a target object; a ceiling plate which is installed at a ceiling portion and is made of a dielectric material; a gas introduction mechanism for introducing a processing gas including a film formation source gas and a supporting gas; and a microwave introduction mechanism which is installed at a ceiling plate'"'"'s side and has a planar antenna member. The gas introduction mechanism includes: a central gas injection hole for the source gas, located above a central portion of the target object; and a plurality of peripheral gas injection holes for the source gas, arranged above a peripheral portion of the target object along a circumferential direction thereof. A plasma shielding member is installed above the target object and between the central gas injection hole and the peripheral gas injection holes along the circumferential direction thereof.
27 Citations
18 Claims
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1. A plasma film forming apparatus comprising:
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a processing chamber which has its ceiling portion opened and is evacuable; a mounting table installed in the processing chamber, for mounting thereon a target object to be processed; a ceiling plate which is airtightly installed at an opening of the ceiling portion and is made of a dielectric material capable of transmitting a microwave; a gas introduction mechanism for introducing a processing gas including a film formation source gas and a supporting gas into the processing chamber; and a microwave introduction mechanism which is installed at a ceiling plate'"'"'s side and has a planar antenna member so as to introduce the microwave into the processing chamber, wherein the gas introduction mechanism includes; a central gas injection hole for the source gas, located above a central portion of the target object; a plurality of peripheral gas injection holes for the source gas, arranged above a peripheral portion of the target object along a circumferential direction of the target object; and a plasma shielding member for shielding plasma is installed above an intermediate portion located between the central portion and the peripheral portion of the target object along the circumferential direction thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A plasma film forming method comprising:
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introducing a processing gas including a film formation source gas and a supporting gas into an evacuable processing chamber; and generating plasma by introducing a microwave from a ceiling of the processing chamber and forming a thin film on a surface of a target object installed in the processing chamber, wherein, when the processing gas is introduced into the processing chamber, the source gas is injected and introduced from above a central portion and a peripheral portion of the target object, and the plasma is shielded by a plasma shielding member installed above the target object at a position between the central portion and the peripheral portion of the target object, so that the thin film is formed.
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Specification