Tuner and microwave plasma source
First Claim
1. A tuner, provided in a microwave transmission path for transmitting a microwave from a microwave power source to a chamber for performing a microwave plasma process, for matching an impedance of a load in the chamber to a characteristic impedance of the microwave power source, the tuner comprising:
- a body having a tubular outer conductor and a tubular inner conductor coaxially provided in the outer conductor, the body forming a part of the microwave transmission path;
an annular dielectric slug provided between the outer conductor and the inner conductor, the slug being movable along a longitudinal direction of the inner conductor; and
a drive mechanism for moving the slug,wherein the drive mechanism comprises;
a drive part for applying a driving force;
a drive transmission part for transmitting the driving force from the drive part to the slug;
a drive guide part for guiding movement of the slug; and
a holding part for holding the slug at the drive transmission part,wherein the drive transmission part, the drive guide part and the holding part are accommodated in the inner conductor.
1 Assignment
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Accused Products
Abstract
A tuner for matching impedance includes: a body having a tubular outer conductor and a tubular inner conductor coaxially provided in the outer conductor, the body forming a part of the microwave transmission path; an annular dielectric slug provided between the outer conductor and the inner conductor, the slug being movable along a longitudinal direction of the inner conductor; and a drive mechanism for moving the slug and including a drive part for applying a driving force; a drive transmission part for transmitting the driving force to the slug; a drive guide part for guiding movement of the slug; and a holding part for holding the slug at the drive transmission part, and wherein the drive transmission part, the drive guide part and the holding part are accommodated in the inner conductor.
29 Citations
10 Claims
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1. A tuner, provided in a microwave transmission path for transmitting a microwave from a microwave power source to a chamber for performing a microwave plasma process, for matching an impedance of a load in the chamber to a characteristic impedance of the microwave power source, the tuner comprising:
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a body having a tubular outer conductor and a tubular inner conductor coaxially provided in the outer conductor, the body forming a part of the microwave transmission path; an annular dielectric slug provided between the outer conductor and the inner conductor, the slug being movable along a longitudinal direction of the inner conductor; and a drive mechanism for moving the slug, wherein the drive mechanism comprises; a drive part for applying a driving force; a drive transmission part for transmitting the driving force from the drive part to the slug; a drive guide part for guiding movement of the slug; and a holding part for holding the slug at the drive transmission part, wherein the drive transmission part, the drive guide part and the holding part are accommodated in the inner conductor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A microwave plasma source comprising:
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a microwave power source; a microwave transmission path which transmits a microwave from the microwave power source to a chamber for performing a plasma process on a substrate; a tuner provided in the microwave transmission path for matching an impedance of a load in the chamber to a characteristic impedance of the microwave power source; and an antenna unit for generating a plasma by radiating the microwave into the chamber, wherein the tuner includes; a body having a tubular outer conductor and a tubular inner conductor coaxially provided in the outer conductor, the body forming a part of the microwave transmission path; an annular dielectric slug provided between the outer conductor and the inner conductor, the slug being movable along a longitudinal direction of the inner conductor; and a drive mechanism for moving the slug, wherein the drive mechanism comprises; a drive part for applying a driving force; a drive transmission part for transmitting the driving force from the drive part to the slug; a drive guide part for guiding movement of the slug; and a holding part for holding the slug at the drive transmission part, wherein the drive transmission part, the drive guide part and the holding part are accommodated in the inner conductor. - View Dependent Claims (9, 10)
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Specification