Microwave plasma processing apparatus
First Claim
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1. An antenna for a microwave plasma processing apparatus comprising:
- a plate, the plate having,a plurality of grooves on a circumferential edge of the plate, wherein the grooves are open ended,a plurality of first slots arranged circumferentially at a first radius of the plate,a plurality of second slots arranged circumferentially at a second radius of the plate, anda plurality of third slots arranged circumferentially at a third radius of the plate,wherein the plurality of the first, second, and third slots include a variety of cross shapes,the first slots are configured to be in a shape of a cross having a first sub slot, a second sub slot, a third sub slot, and a fourth sub slot, andthe first to fourth sub slots are separated from each other, andwherein the plurality of grooves correspond to and accommodate a plurality of protrusions on an antenna support ring disposed below the plate.
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Abstract
In accordance with example embodiments, a plasma processing apparatus includes a chamber configured to peform a plasma process, an upper plate on the chamber, an antenna under the upper plate and the antenna is configured to generate plasma in the chamber, an upper insulator between the upper plate and the antenna and the upper insulator covers a top of the antenna, a lower insulator covering a bottom of the antenna, an antenna support ring configured to fix the antenna to the upper plate, and a metal gasket adhered to the antenna support ring.
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Citations
15 Claims
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1. An antenna for a microwave plasma processing apparatus comprising:
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a plate, the plate having, a plurality of grooves on a circumferential edge of the plate, wherein the grooves are open ended, a plurality of first slots arranged circumferentially at a first radius of the plate, a plurality of second slots arranged circumferentially at a second radius of the plate, and a plurality of third slots arranged circumferentially at a third radius of the plate, wherein the plurality of the first, second, and third slots include a variety of cross shapes, the first slots are configured to be in a shape of a cross having a first sub slot, a second sub slot, a third sub slot, and a fourth sub slot, and the first to fourth sub slots are separated from each other, and wherein the plurality of grooves correspond to and accommodate a plurality of protrusions on an antenna support ring disposed below the plate. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A microwave plasma processing apparatus comprising:
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a chamber configured to perform a plasma process; an upper plate on the chamber;
an antenna under the upper plate, the antenna configured to generate plasma in the chamber;an upper insulator between the upper plate and the antenna, the upper insulator covering a top of the antenna; a lower insulator covering a bottom of the antenna; and an antenna support ring disposed below the antenna and configured to fix the antenna to the upper plate, wherein the antenna includes at least one groove on a circumferential edge of the antenna, wherein the at least one groove is open-ended, and a plurality of first slots, second slots, and third slots on a first circumferential surface, a second circumferential surface, and a third circumferential surface of the antenna respectively, the plurality of the first, second, and third slots include a variety of cross shapes, the first slots are configured to be in a shape of a cross having a first sub slot, a second sub slot, a third sub slot, and a fourth sub slot, and the first to fourth sub slots are separated from each other, and wherein the at least one groove corresponds to and accommodates at least one protrusion on the antenna support ring. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An antenna for a microwave plasma processing apparatus comprising:
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a plate, the plate having, a plurality of grooves on a circumferential edge of the plate, wherein the grooves are open ended, a plurality of first slots arranged circumferentially at a first radius of the plate, a plurality of second slots arranged circumferentially at a second radius of the plate, and a plurality of third slots arranged circumferentially at a third radius of the plate, wherein the plurality of the first, second, and third slots include a variety of cross shapes, and wherein the plurality of grooves correspond to and accommodate a plurality of protrusions on an antenna support ring disposed below the plate.
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Specification