Patents by Inventor Shang-I Chou
Shang-I Chou has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20250022691Abstract: A wide-coverage edge ring configured to be arranged above a bottom ring in a substrate processing chamber includes an upper surface, a lower surface that includes a lower surface step that extends downward from the lower surface and is configured to be received within and interface with a pocket defined at least partially by an upper surface of the bottom ring and an inner surface of a chamber liner, an inner diameter, a ledge defined in the inner diameter of the edge ring, and an outer diameter. The outer diameter of the edge ring includes a projection that extends radially outward from the edge ring and defines an inward step in the outer diameter, the projection and the inward step are configured to interface with an upper end of the chamber liner, and the projection is configured to extend at least partially over the upper end of the chamber liner.Type: ApplicationFiled: February 7, 2022Publication date: January 16, 2025Inventors: Shang-I CHOU, Dandan WANG, Giovanni Paolo GAJUDO, Gary GRAGG, Robert O'NEILL
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Patent number: 9412670Abstract: A system and method of applying power to a target plasma chamber include, characterizing a no plasma performance slope of the target plasma chamber, applying a selected plasma recipe to a first wafer in the target chamber, the selected plasma recipe includes a selected power set point value and monitoring a recipe factor value on the RF electrode. A ratio of process efficiency is generated comparing the reference chamber and the target chamber, the generating using as inputs the no plasma performance slopes of the target chamber and the reference chamber and the monitored recipe factor value. An adjusted power set point value is calculated, the adjusted power set point configured to cause power delivered to a plasma formed in the target chamber to match power that would be delivered to a reference plasma formed in the reference chamber.Type: GrantFiled: May 23, 2013Date of Patent: August 9, 2016Assignee: Lam Research CorporationInventors: Robert G. O'Neill, Arthur Sato, Eric Tonnis, Seetharaman Ramachandran, Shang-I Chou
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Publication number: 20140349417Abstract: A system and method of applying power to a target plasma chamber include, characterizing a no plasma performance slope of the target plasma chamber, applying a selected plasma recipe to a first wafer in the target chamber, the selected plasma recipe includes a selected power set point value and monitoring a recipe factor value on the RF electrode. A ratio of process efficiency is generated comparing the reference chamber and the target chamber, the generating using as inputs the no plasma performance slopes of the target chamber and the reference chamber and the monitored recipe factor value. An adjusted power set point value is calculated, the adjusted power set point configured to cause power delivered to a plasma formed in the target chamber to match power that would be delivered to a reference plasma formed in the reference chamber.Type: ApplicationFiled: May 23, 2013Publication date: November 27, 2014Applicant: Lam Research CorporationInventors: Robert G. O'Neill, Arthur Sato, Eric Tonnis, Seetharaman Ramachandran, Shang-I Chou
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Patent number: 8624210Abstract: A quartz window with an interior plenum is operable as a shutter or UV filter in a degas chamber by supplying the plenum with an ozone-containing gas. Pressure in the plenum can be adjusted to block UV light transmission into the degas chamber or adjust transmittance of UV light through the window. When the plenum is evacuated, the plenum allows maximum transmission of UV light into the degas chamber.Type: GrantFiled: June 21, 2013Date of Patent: January 7, 2014Assignee: Lam Research CorporationInventors: Yen-Kun Victor Wang, Shang-I Chou, Jason Autustino
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Publication number: 20130288488Abstract: A quartz window with an interior plenum is operable as a shutter or UV filter in a degas chamber by supplying the plenum with an ozone-containing gas. Pressure in the plenum can be adjusted to block UV light transmission into the degas chamber or adjust transmittance of UV light through the window. When the plenum is evacuated, the plenum allows maximum transmission of UV light into the degas chamber.Type: ApplicationFiled: June 21, 2013Publication date: October 31, 2013Inventors: Yen-Kun Victor Wang, Shang-I Chou, Jason Augustino
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Patent number: 8525139Abstract: A wafer is provided into an entrance load lock chamber. A vacuum is created in the entrance load lock chamber. The wafer is transported to a processing tool. The wafer is processed in a process chamber to provide a processed wafer, wherein the processing forms halogen residue. A degas step is provided in the process chamber after processing the wafer. The processed wafer is transferred into a degas chamber. The processed wafer is treated in the degas chamber with UV light and a flow of gas comprising at least one of ozone, oxygen, or H2O. The flow of gas is stopped. The UV light is stopped. The processed wafer is removed from the degas chamber.Type: GrantFiled: October 20, 2010Date of Patent: September 3, 2013Assignee: Lam Research CorporationInventors: Harmeet Singh, Sanket Sant, Shang-I Chou, Vahid Vahedi, Raphael Casaes, Seetharaman Ramachandran
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Patent number: 8492736Abstract: A quartz window with an interior plenum is operable as a shutter or UV filter in a degas chamber by supplying the plenum with an ozone-containing gas. Pressure in the plenum can be adjusted to block UV light transmission into the degas chamber or adjust transmittance of UV light through the window. When the plenum is evacuated, the plenum allows maximum transmission of UV light into the degas chamber.Type: GrantFiled: June 9, 2010Date of Patent: July 23, 2013Assignee: Lam Research CorporationInventors: Yen-Kun Victor Wang, Shang-I Chou, Jason Augustino
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Patent number: 8232538Abstract: A method and apparatus for removing halogen residue from a processed wafer is provided. A wafer is transferred into a processing tool where it is processed in a manner that leaves halogen residue on the wafer. The processed wafer is then moved into a degas chamber where it is treated with UV light and a gas mixture containing at least one of ozone and oxygen to remove the halogen residue. Once treated, the wafer is transferred into an isolation station where it is isolated from the unprocessed wafers for a period of time to allow any remaining residue to dissipate before it is returned to the cassette where it started.Type: GrantFiled: October 27, 2009Date of Patent: July 31, 2012Assignee: Lam Research CorporationInventors: Sanket Sant, Shang-I Chou
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Publication number: 20110306213Abstract: A quartz window with an interior plenum is operable as a shutter or UV filter in a degas chamber by supplying the plenum with an ozone-containing gas. Pressure in the plenum can be adjusted to block UV light transmission into the degas chamber or adjust transmittance of UV light through the window. When the plenum is evacuated, the plenum allows maximum transmission of UV light into the degas chamber.Type: ApplicationFiled: June 9, 2010Publication date: December 15, 2011Applicant: Lam Research CorporationInventors: Yen-Kun Victor Wang, Shang-I Chou, Jason Augustino
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Patent number: 8060330Abstract: A wafer handling mechanism is operated to place a wafer on a chuck. A chucking force is then applied to the wafer, whereby wafer support features of the chuck transfer a defect pattern onto a surface of the wafer. The surface of the wafer is analyzed by a defect metrology tool to obtain a mapping of the defect pattern transferred onto the surface of the wafer. A center coordinate of the chuck within a coordinate system of the wafer is determined by analyzing the defect pattern as transferred to the surface of the wafer. A spatial offset between the center coordinate of the chuck and the center of the wafer is determined. The spatial offset is used to adjust the wafer handling mechanism so as to enable alignment of the center of the wafer to the center coordinate of the chuck.Type: GrantFiled: December 12, 2008Date of Patent: November 15, 2011Assignee: Lam Research CorporationInventors: Robert Griffith O'Neill, Jorge Luque, Shang-I Chou, Harmeet Singh
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Publication number: 20110097902Abstract: A wafer is provided into an entrance load lock chamber. A vacuum is created in the entrance load lock chamber. The wafer is transported to a processing tool. The wafer is processed in a process chamber to provide a processed wafer, wherein the processing forms halogen residue. A degas step is provided in the process chamber after processing the wafer. The processed wafer is transferred into a degas chamber. The processed wafer is treated in the degas chamber with UV light and a flow of gas comprising at least one of ozone, oxygen, or H2O. The flow of gas is stopped. The UV light is stopped. The processed wafer is removed from the degas chamber.Type: ApplicationFiled: October 20, 2010Publication date: April 28, 2011Applicant: LAM RESEARCH CORPORATIONInventors: Harmeet Singh, Sanket Sant, Shang-I Chou, Vahid Vahedi, Raphael Casaes, Seetharaman Ramachandran
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Publication number: 20110095207Abstract: A method and apparatus for removing halogen residue from a processed wafer is provided. A wafer is transferred into a processing tool where it is processed in a manner that leaves halogen residue on the wafer. The processed wafer is then moved into a degas chamber where it is treated with UV light and a gas mixture containing at least one of ozone and oxygen to remove the halogen residue. Once treated, the wafer is transferred into an isolation station where it is isolated from the unprocessed wafers for a period of time to allow any remaining residue to dissipate before it is returned to the cassette where it started.Type: ApplicationFiled: October 27, 2009Publication date: April 28, 2011Applicant: LAM RESEARCH CORPORATIONInventors: Sanket Sant, Shang-I Chou
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Publication number: 20100150695Abstract: A wafer handling mechanism is operated to place a wafer on a chuck. A chucking force is then applied to the wafer, whereby wafer support features of the chuck transfer a defect pattern onto a surface of the wafer. The surface of the wafer is analyzed by a defect metrology tool to obtain a mapping of the defect pattern transferred onto the surface of the wafer. A center coordinate of the chuck within a coordinate system of the wafer is determined by analyzing the defect pattern as transferred to the surface of the wafer. A spatial offset between the center coordinate of the chuck and the center of the wafer is determined. The spatial offset is used to adjust the wafer handling mechanism so as to enable alignment of the center of the wafer to the center coordinate of the chuck.Type: ApplicationFiled: December 12, 2008Publication date: June 17, 2010Applicant: Lam Research CorporationInventors: Robert Griffith O'Neill, Jorge Luque, Shang-I Chou, Harmeet Singh