Patents by Inventor Christopher Kimball
Christopher Kimball 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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Patent number: 12129569Abstract: A method for making a component for use in a semiconductor processing chamber is provided. A component body is formed from a conductive material having a coefficient of thermal expansion of less than 10.0×10?6/K. A metal oxide layer is then disposed over a surface of the component body.Type: GrantFiled: February 16, 2021Date of Patent: October 29, 2024Assignee: Lam Research CorporationInventors: Lin Xu, David Joseph Wetzel, John Daugherty, Hong Shih, Satish Srinivasan, Yuanping Song, Johnny Pham, Yiwei Song, Christopher Kimball
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Patent number: 11967517Abstract: An electrostatic chuck for a substrate processing system includes a monolithic body made of ceramic. A plurality of first electrodes are arranged in the monolithic body adjacent to a top surface of the monolithic body and that are configured to selectively receive a chucking signal. A gas channel is formed in the monolithic body and is configured to supply back side gas to the top surface. Coolant channels are formed in the monolithic body and are configured to receive fluid to control a temperature of the monolithic body.Type: GrantFiled: January 27, 2020Date of Patent: April 23, 2024Assignee: Lam Research CorporationInventors: Feng Wang, Keith Gaff, Christopher Kimball, Darrell Ehrlich
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Patent number: 11935776Abstract: A method for electrostatically clamping an edge ring in a plasma processing chamber with an electrostatic ring clamp with at least one ring backside temperature channel for providing a flow of gas to the edge ring is provided. A vacuum is provided to the at least one ring backside temperature channel Pressure in the backside temperature channel is measured. An electrostatic ring clamping voltage is provided when the pressure in the backside temperature channel reaches a threshold maximum pressure. The vacuum to the backside temperature channel is discontinued. Pressure in the backside temperature channel is measured. If pressure in the backside temperature channel rises faster than a threshold rate, then sealing failure is indicated. If pressure in the backside temperature channel does not rise faster than the threshold rate, a plasma process is continued, using the backside temperature channel to regulate a temperature of the edge ring.Type: GrantFiled: February 12, 2021Date of Patent: March 19, 2024Assignee: Lam Research CorporationInventors: Christopher Kimball, Keith Gaff, Feng Wang
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Patent number: 11848177Abstract: An electrostatic chuck for a substrate processing system is provided. The electrostatic chuck includes: a top plate configured to electrostatically clamp to a substrate and formed of ceramic; an intermediate layer disposed below the top plate; and a baseplate disposed below the intermediate layer and formed of ceramic. The intermediate layer bonds the top plate to the baseplate.Type: GrantFiled: February 23, 2018Date of Patent: December 19, 2023Assignee: Lam Research CorporationInventors: Feng Wang, Keith Gaff, Christopher Kimball
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Publication number: 20220270863Abstract: A moveable edge ring system for a plasma processing system includes a top edge ring and a first edge ring arranged below the top edge ring. A second edge ring is made of conductive material and includes an upper portion, a middle portion and a lower portion. The top edge ring and the second edge ring are configured to move in a vertical direction relative to a substrate support and the first edge ring when biased upwardly by a lift pin. The second edge ring is arranged below the top edge ring and radially outside of the first edge ring.Type: ApplicationFiled: February 14, 2022Publication date: August 25, 2022Inventors: Christopher Kimball, Hema Swaroop Mopidevi, Saravanapriyan Sriraman, Tom A. Kamp, Darrell Ehrlich, Anthony Contreras, Chiara Helena Catherina Giammanco Macpherson
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Publication number: 20220172925Abstract: A controller including a voltage sensor coupled to a heater trace integrated in an electrostatic chuck, the voltage sensor configured to sense a voltage difference across the heater trace, wherein the heater trace is associated with a heater zone. The controller including a current sensor coupled to the heater trace and configured to sense a current in the heater trace. The controller including a resistance identifier configured to identify a resistance of the heater trace based on the voltage difference and the current that is sensed. The controller including a temperature correlator configured to approximate a temperature of the heater zone based on the resistance and a correlation function of the heater trace. The correlation function uses a temperature coefficient of resistance of the heater trace.Type: ApplicationFiled: March 10, 2020Publication date: June 2, 2022Inventors: Changyou Jing, Oleksandr Mikhnenko, Christopher Kimball
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Publication number: 20220122878Abstract: A lift pin mechanism employed within a process module includes a plurality of lift pins distributed uniformly along a circumference of a lower electrode defined in the process module. Each lift pin includes a top member that is separated from a bottom member by a collar defined by a chamfer. A sleeve is defined in a housing within a body of the lower electrode on which a substrate is received for processing. The housing is disposed below a mid ring that is defined in the lower electrode. The collar of the lift pin is used to engage with a bottom side of the sleeve, and a top side of the sleeve is configured to engage with the mid ring, when the lift pins are activated. An actuator coupled to each of the plurality of lift pins and an actuator drive connected to the actuators is used to drive the plurality of lift pins. A controller is coupled to the actuator drive to control movement of the plurality of lift pins.Type: ApplicationFiled: April 22, 2020Publication date: April 21, 2022Inventors: Joanna Wu, Hui Ling Han, Christopher Kimball, Jim Tappan, Griff O'Neill, John Drewery
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Patent number: 10923380Abstract: An edge ring for use in a plasma processing chamber with a chuck is provided. An edge ring body has a first surface to be placed over and facing the chuck, wherein the first surface forms a ring around an aperture. A first elastomer ring is integrated to the first surface and extending around the aperture.Type: GrantFiled: February 12, 2018Date of Patent: February 16, 2021Assignee: Lam Research CorporationInventors: Christopher Kimball, Keith Gaff, Feng Wang
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Patent number: 10804129Abstract: An electrostatic chuck assembly for processing a semiconductor substrate is provided. The electrostatic chuck assembly includes a first layer, a baseplate, a second layer, and at least one annular gasket. The first layer includes ceramic material and a first radio frequency (RF) electrode. The first RF electrode is embedded in the ceramic material. The second layer is disposed between the first layer and the baseplate. The at least one annular gasket extends along an upper surface of the baseplate and through the second layer. The at least one annular gasket electrically couples the upper surface of the baseplate to the first RF electrode. RF power passes from the baseplate to the first RF electrode through the at least one annular gasket.Type: GrantFiled: May 24, 2018Date of Patent: October 13, 2020Assignee: LAM RESEARCH CORPORATIONInventors: Christopher Kimball, Keith Gaff, Alexander Matyushkin, Zhigang Chen, Keith Comendant
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Publication number: 20190267218Abstract: An electrostatic chuck for a substrate processing system is provided. The electrostatic chuck includes: a top plate configured to electrostatically clamp to a substrate and formed of ceramic; an intermediate layer disposed below the top plate; and a baseplate disposed below the intermediate layer and formed of ceramic. The intermediate layer bonds the top plate to the baseplate.Type: ApplicationFiled: February 23, 2018Publication date: August 29, 2019Inventors: Feng Wang, Keith Gaff, Christopher Kimball
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Patent number: 10002782Abstract: A substrate processing apparatus for processing substrates comprises a processing chamber in which a substrate is processed. A process gas source is adapted to supply process gas into the processing chamber. A RF energy source is adapted to energize the process gas into a plasma state in the processing chamber. A vacuum source is adapted to exhaust byproducts of the processing from the processing chamber. The processing chamber includes an electrostatic chuck assembly having a layer of ceramic material that includes an upper electrostatic clamping electrode and at least one RF electrode, a temperature controlled RF powered baseplate, and at least one annular electrically conductive gasket extending along an outer portion of an upper surface of the temperature controlled RF powered baseplate. The at least one annular electrically conductive gasket electrically couples the upper surface of the temperature controlled RF powered baseplate to the at least one RF electrode.Type: GrantFiled: October 17, 2014Date of Patent: June 19, 2018Assignee: LAM RESEARCH CORPORATIONInventors: Christopher Kimball, Keith Gaff, Alexander Matyushkin, Zhigang Chen, III, Keith Comendant
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Patent number: 9922857Abstract: An edge ring is provided for use with an electrostatic wafer chuck and an electrostatic ring chuck with a central aperture with a cooling groove and with ring clamping electrodes and at least one ring backside temperature channel to regulate the temperature of the edge ring. The edge ring comprises an edge ring body to be placed over the electrostatic ring chuck with ring clamping electrodes, wherein the edge ring body comprises conductive portions which are placed over the ring clamping electrodes, when the edge ring body is placed over the electrostatic ring chuck and a first elastomer ring integrated to a first surface of the edge ring body and surrounding a central aperture of the first surface, wherein when the edge ring body is placed over the electrostatic ring chuck, the first elastomer ring is used to seal the cooling groove.Type: GrantFiled: November 3, 2016Date of Patent: March 20, 2018Assignee: Lam Research CorporationInventors: Christopher Kimball, Keith Gaff, Feng Wang
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Publication number: 20160111314Abstract: A substrate processing apparatus for processing substrates comprises a processing chamber in which a substrate is processed. A process gas source is adapted to supply process gas into the processing chamber. A RF energy source is adapted to energize the process gas into a plasma state in the processing chamber. A vacuum source is adapted to exhaust byproducts of the processing from the processing chamber. The processing chamber includes an electrostatic chuck assembly having a layer of ceramic material that includes an upper electrostatic clamping electrode and at least one RF electrode, a temperature controlled RF powered baseplate, and at least one annular electrically conductive gasket extending along an outer portion of an upper surface of the temperature controlled RF powered baseplate. The at least one annular electrically conductive gasket electrically couples the upper surface of the temperature controlled RF powered baseplate to the at least one RF electrode.Type: ApplicationFiled: October 17, 2014Publication date: April 21, 2016Inventors: Christopher Kimball, Keith Gaff, Alexander Matyushkin, Zhigang Chen, Keith Comendant
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Patent number: 9101038Abstract: A semiconductor wafer processing apparatus for processing semiconductor wafers comprises a semiconductor wafer processing chamber in which a semiconductor wafer is processed, a process gas source in fluid communication with the processing chamber adapted to supply process gas into the processing chamber, a vacuum source adapted to exhaust process gas and byproducts of the processing from the processing chamber, and an electrostatic chuck assembly.Type: GrantFiled: December 20, 2013Date of Patent: August 4, 2015Assignee: LAM RESEARCH CORPORATIONInventors: Harmeet Singh, Christopher Kimball, Keith Gaff, Tyler Gloski
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Publication number: 20150181683Abstract: A semiconductor wafer processing apparatus for processing semiconductor wafers comprises a semiconductor wafer processing chamber in which a semiconductor wafer is processed, a process gas source in fluid communication with the processing chamber adapted to supply process gas into the processing chamber, a vacuum source adapted to exhaust process gas and byproducts of the processing from the processing chamber, and an electrostatic chuck assembly.Type: ApplicationFiled: December 20, 2013Publication date: June 25, 2015Applicant: Lam Research CorporationInventors: Harmeet Singh, Christopher Kimball, Keith Gaff, Tyler Gloski
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Patent number: 7994794Abstract: Methods using a probe apparatus configured to measure a set of electrical characteristics in a plasma include providing a chamber wall including at least a set of plasma chamber surfaces configured to be exposed to a plasma, the plasma having a set of electrical characteristics. The method includes installing a collection disk structure configured to be exposed to the plasma, wherein the collection disk structure having at least a body disposed within the chamber wall and a collection disk structure surface that is either coplanar or recessed with at least one of the set of plasma chamber surfaces and providing a conductive path configured to transmit the set of electrical characteristics from the collection disk structure to a set of transducers.Type: GrantFiled: May 24, 2010Date of Patent: August 9, 2011Assignee: Lam Research CorporationInventors: Christopher Kimball, Eric Hudson, Douglas Keil, Alexei Marakhtanov
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Patent number: 7867355Abstract: A plasma probe assembly for use in a plasma processing chamber is provided. A semiconductor probe element with a probe surface at a first end of the semiconductor probe element is provided. An electrical connector is electrically connected to the semiconductor probe element. An electrically insulating sleeve surrounds at least part of the probe element. An adjustment device is connected to the semiconductor probe so that the probe surface is coplanar with an interior chamber surface of the plasma processing chamber.Type: GrantFiled: December 11, 2008Date of Patent: January 11, 2011Assignee: Lam Research CorporationInventors: Christopher Kimball, Eric Hudson, Douglas Keil, Alexei Marakhtanov
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Publication number: 20100229372Abstract: Methods using a probe apparatus configured to measure a set of electrical characteristics in a plasma include providing a chamber wall including at least a set of plasma chamber surfaces configured to be exposed to a plasma, the plasma having a set of electrical characteristics. The method includes installing a collection disk structure configured to be exposed to the plasma, wherein the collection disk structure having at least a body disposed within the chamber wall and a collection disk structure surface that is either coplanar or recessed with at least one of the set of plasma chamber surfaces and providing a conductive path configured to transmit the set of electrical characteristics from the collection disk structure to a set of transducers.Type: ApplicationFiled: May 24, 2010Publication date: September 16, 2010Inventors: Christopher Kimball, Eric Hudson, Douglas Keil, Alexei Marakhtanov
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Patent number: 7723994Abstract: A plasma processing chamber with a probe apparatus configured to measure a set of electrical characteristics in a plasma is disclosed. The plasma processing chamber includes a set of plasma chamber surfaces configured to be exposed to the plasma. The probe apparatus includes a collection disk structure configured to be exposed to the plasma, whereby the collection disk structure is coplanar with at least one of the set of plasma chamber surfaces. The probe apparatus also includes a conductive path configured to transmit the set of electrical characteristics from the collection disk structure to a set of transducers.Type: GrantFiled: November 30, 2007Date of Patent: May 25, 2010Assignee: Lam Research CorporationInventors: Christopher Kimball, Eric Hudson, Douglas Keil, Alexei Marakhtanov
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Patent number: 7699634Abstract: An electrical connector has a non-conductive outer housing and a spring-loaded conductive assembly mounted within. The non-conductive outer housing has a longitudinal axis along which the spring-loaded conductive assembly is allowed to move over a limited range, in either direction. The conductive assembly includes a conductive contact pad and an conductive elongated shaft which are mated together within the non-conductive outer housing. A spring mounted along the contact shaft and in abutment therewith biases the contact shaft in a direction away from the contact base. When the electrical connector is employed in a chamber lid of a chamber lid assembly having an integrated laminated heater, such as for use in conjunction with a wafer processing chamber, the spring biases a lower surface of the contact shaft against the heater.Type: GrantFiled: March 16, 2007Date of Patent: April 20, 2010Assignee: Lam Research CorporationInventors: Arnold Kholodenko, Russell Martin, John Rasnick, Christopher Kimball