Rotary silicon wafer cleaning apparatus
First Claim
1. A rotation silicon wafer cleaning device for performing drying and hydrogen termination treatment on an outer surface of a silicon wafer, comprising:
- (a) a case body;
(b) a silicon wafer support and rotation driving mechanism disposed inside the case body; and
(c) a silicon wafer drying device including(i) a gas supply panel having a gas mixer, the supply panel being disposed to supply a mix of hydrogen gas and inert gas, the mix comprising greater than 0.05% by volume of hydrogen;
(ii) a mixed gas supply pipe coupled to the gas mixer;
(iii) a mixed gas heating device disposed to heat the mixed gas in the mixed gas supply pipe; and
(iv) a hydrogen radical formation and dispersion apparatus disposed to receive the heated mixed gas from the mixed gas supply pipe, having a platinum film disposed to form hydrogen radicals in the heated mixed gas, the hydrogen radical formation and dispersion apparatus disposed to direct the mixed gas containing hydrogen radicals onto a rotating silicon wafer.
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Accused Products
Abstract
It is an object of the present invention to provide a rotation type silicon wafer cleaning device to further raise the stability of a silicon wafer by providing a better hydrogen termination on the silicon wafer after completion of chemical and pure water cleaning treatments.
According to the present invention, a rotation type silicon wafer cleaning device has a silicon wafer support/rotation driving mechanism inside the case body for cleaning the silicon wafer at the post chemical cleaning with pure water, drying and hydrogen termination treatments on the outer surface of a silicon wafer is performed by means of installing a silicon wafer drying device comprising a gas supply panel attached to a case body to supply a mixed gas of the hydrogen gas and inactive gas containing a hydrogen gas of more than 0.05%, a mixed gas supply pipe coupled to a gas mixer of the afore-mentioned gas supply panel at one end, a mixed gas heating device to heat the mixed gas in the afore-mentioned gas supply pipe, and a hydrogen radical formation apparatus equipped with a platinum coating film to form hydrogen radical at the gas contacting part where to a high temperature gas heated with the afore-mentioned mixed gas heating device touches, thus to gush out the mixed gas containing hydrogen radical formed with the afore-mentioned radical formation apparatus onto the rotating silicon wafer after cleaning is completed.
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Citations
17 Claims
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1. A rotation silicon wafer cleaning device for performing drying and hydrogen termination treatment on an outer surface of a silicon wafer, comprising:
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(a) a case body; (b) a silicon wafer support and rotation driving mechanism disposed inside the case body; and (c) a silicon wafer drying device including (i) a gas supply panel having a gas mixer, the supply panel being disposed to supply a mix of hydrogen gas and inert gas, the mix comprising greater than 0.05% by volume of hydrogen; (ii) a mixed gas supply pipe coupled to the gas mixer; (iii) a mixed gas heating device disposed to heat the mixed gas in the mixed gas supply pipe; and (iv) a hydrogen radical formation and dispersion apparatus disposed to receive the heated mixed gas from the mixed gas supply pipe, having a platinum film disposed to form hydrogen radicals in the heated mixed gas, the hydrogen radical formation and dispersion apparatus disposed to direct the mixed gas containing hydrogen radicals onto a rotating silicon wafer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for performing drying and hydrogen termination treatment on the outer surface of a silicon wafer, comprising the steps of:
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(a) providing a mix of hydrogen and inert gas, (b) heating the mixed gas to a temperature of greater than 150°
C.,(c) passing the heated mixed gas through a platinum catalyst to generate hydrogen radicals to form a heated gas comprising hydrogen radicals, and (d) exposing a silicon wafer to the heated gas comprising hydrogen radicals. - View Dependent Claims (12, 13)
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14. A method for performing drying and hydrogen termination treatment on the outer surface of a silicon wafer, comprising the steps of:
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(a) providing a rotation silicon wafer cleaning device, comprising; (i) a case body; (ii) a silicon wafer support and rotation driving mechanism disposed inside the case body; and (iii) a silicon wafer drying device including (1) a gas supply panel having a gas mixer, the supply panel being disposed to supply a mix of hydrogen gas and inactive gas, the mix comprising greater than 0.05% by volume of hydrogen; (2) a mixed gas supply pipe coupled to the gas mixer; (3) a mixed gas heating device disposed to heat the mixed gas in the mixed gas supply pipe; and (4) a hydrogen radical formation and dispersion apparatus disposed to receive the heated mixed gas from the mixed gas supply pipe, having a platinum film disposed to form hydrogen radicals in the heated mixed gas, the hydrogen radical formation and dispersion apparatus disposed to direct the mixed gas containing hydrogen radicals onto a rotating silicon wafer, (b) providing a mix of hydrogen and inert gas through said gas supply panel; (c) heating said mix of gas with said mixed gas heating device; (d) passing said heated mixed gas through said hydrogen radical formation and dispersion apparatus to form a heated gas comprising hydrogen radicals; and (e) exposing said silicon wafer to the heated gas comprising hydrogen radicals. - View Dependent Claims (15, 16, 17)
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Specification