APPARATUS TO TREAT A SUBSTRATE AND METHOD THEREOF
First Claim
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1. An apparatus to treat a substrate, comprising:
- a vacuum chamber including a plasma space where a plasma is generated and a treating space where a substrate is treated;
an extract electrode disposed between the plasma space and the treating space;
a power supply to provide power to the extract electrode; and
a controller to control the power supply so that a cation beam and a negative charge beam are alternately extracted from the plasma in the plasma space and provided to the treating space.
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Abstract
An apparatus to treat a substrate including a vacuum chamber having a plasma space where plasma is generated and a treating space where a substrate is treated, an extract electrode disposed between the plasma space and the treating space, a power supply to provide power to the extract electrode, and a controller to control the power supply so that a cation beam and a negative charge beam are alternately extracted from a plasma in the plasma space to the treating space.
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Citations
29 Claims
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1. An apparatus to treat a substrate, comprising:
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a vacuum chamber including a plasma space where a plasma is generated and a treating space where a substrate is treated;
an extract electrode disposed between the plasma space and the treating space;
a power supply to provide power to the extract electrode; and
a controller to control the power supply so that a cation beam and a negative charge beam are alternately extracted from the plasma in the plasma space and provided to the treating space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An extract electrode apparatus to neutralize a cation beam and a negative charge beam usable in an apparatus to treat a substrate using a plasma, comprising:
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one or more grids sequentially arranged between the substrate and the plasma in the apparatus to treat a substrate; and
a controller to control voltages supplied to each of the one or more grids to extract the cation beam and the negative charge beam alternately from the plasma and provide the extracted cation beam and the negative charge beam alternately into a space between the extract electrode and the substrate. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A plasma etching apparatus to treat a substrate, comprising:
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a chamber to supply a plasma;
an extract electrode provided in the chamber, including a first grid layer, a second grid layer, and a third grid layer each provided in a same shape and in parallel and vertically arranged and having through holes defined therein; and
a controller to control voltages provided to each of the first, second, and third grids to prevent an accumulation of charges on a substrate within the chamber. - View Dependent Claims (22, 23, 24)
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25. A method of treating a substrate comprising:
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placing a substrate including an exposed insulating layer to be treated on a table inside a vacuum chamber;
generating a plasma in a plasma space adjacent to the table; and
extracting a cation beam and a negative charge beam alternately from the plasma to be provided to the substrate to be treated. - View Dependent Claims (26, 27, 28, 29)
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Specification