Patents by Inventor Neil Benjamin
Neil Benjamin 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: 9775194Abstract: A heating plate for a substrate support assembly in a semiconductor plasma processing apparatus, comprises multiple independently controllable heater zones arranged in a scalable multiplexing layout, and electronics to independently control and power the heater zones. A substrate support assembly in which the heating plate is incorporated includes an electrostatic clamping electrode and a temperature controlled base plate. Methods for manufacturing the heating plate include bonding together ceramic or polymer sheets having heater zones, branch transmission lines, common transmission lines and vias. The heating plate is capable of being driven by AC current or direct current phase alternating power, which has an advantage of minimizing DC magnetic field effects above the substrate support assembly and reduce plasma non-uniformity caused by DC magnetic fields.Type: GrantFiled: March 15, 2016Date of Patent: September 26, 2017Assignee: LAM RESEARCH CORPORATIONInventors: John Pease, Neil Benjamin
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Publication number: 20170229327Abstract: A substrate support is provided, is configured to support a substrate in a plasma processing chamber, and includes first, second and third insulative layers, conduits and leads. The first insulative layer includes heater zones arranged in rows and columns. The second insulative layer includes conductive vias. First ends of the conductive vias are connected respectively to the heater zones. Second ends of the conductive vias are connected respectively to power supply lines. The third insulative layer includes power return lines. The conduits extend through the second insulative layer and into the third insulative layer. The leads extend through the conduits and connect to the heater zones. The heater zones are connected to the power return lines by the leads and are configured to heat corresponding portions of the substrate to provide a predetermined temperature profile across the substrate during processing of the substrate in the plasma processing chamber.Type: ApplicationFiled: April 26, 2017Publication date: August 10, 2017Inventors: Harmeet Singh, Keith Gaff, Neil Benjamin, Keith Comendant
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Patent number: 9646861Abstract: A heating plate for use in a substrate support is configured to provide temperature profile control of a substrate supported on the substrate support in a vacuum chamber of a substrate processing apparatus. The heating plate includes an independently controllable heater zones operable to tune a temperature profile on an upper surface of the heating plate. The heater zones are each powered by two or more power lines wherein each power line is electrically connected to a different group of the heater zones and each respective heater zone is electrically connected to a different pair of power lines.Type: GrantFiled: October 17, 2013Date of Patent: May 9, 2017Assignee: LAM RESEARCH CORPORATIONInventors: Harmeet Singh, Keith Gaff, Neil Benjamin, Keith Comendant
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Publication number: 20170040148Abstract: A feed tube for a substrate processing system includes an outer tube and a feed rod. The feed rod is arranged within the outer tube. The feed rod is arranged to provide radio frequency power to the substrate processing system and the outer tube provides a return for the radio frequency power. At least one conductor is routed within the feed rod. The conductor is arranged to provide electrical power to at least one component of the substrate processing system separate from the radio frequency power provided by the feed rod.Type: ApplicationFiled: August 4, 2015Publication date: February 9, 2017Inventors: Jason Augustino, John Drewery, Alex Paterson, Neil Benjamin
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Publication number: 20160300741Abstract: A substrate support in a semiconductor plasma processing apparatus, comprises multiple independently controllable thermal zones arranged in a scalable multiplexing layout, and electronics to independently control and power the thermal zones. A substrate support in which the substrate support is incorporated includes an electrostatic clamping electrode and a temperature controlled base plate. Methods for manufacturing the substrate support include bonding together ceramic or polymer sheets having thermal zones, power supply lines, power return lines and vias.Type: ApplicationFiled: June 15, 2016Publication date: October 13, 2016Applicant: LAM RESEARCH CORPORATIONInventors: Harmeet Singh, Keith Gaff, Neil Benjamin, Keith Comendant
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Patent number: 9392643Abstract: An exemplary method for manufacturing a heating plate for a substrate support assembly includes forming holes in at least one sheet, printing a slurry of conductor powder, or pressing a precut metal foil, or spraying a slurry of conductor powder, on the at least one sheet to form the planar heater zones, the power supply lines, and power return lines. The holes in the at least one sheet are filled with a slurry of conductor powder to form power supply and power return vias. The sheets are then aligned, pressed, and bonded to form the heating plate.Type: GrantFiled: October 24, 2013Date of Patent: July 12, 2016Assignee: LAM RESEARCH CORPORATIONInventors: Harmeet Singh, Keith Gaff, Neil Benjamin, Keith Comendant
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Publication number: 20160198524Abstract: A heating plate for a substrate support assembly in a semiconductor plasma processing apparatus, comprises multiple independently controllable heater zones arranged in a scalable multiplexing layout, and electronics to independently control and power the heater zones. A substrate support assembly in which the heating plate is incorporated includes an electrostatic clamping electrode and a temperature controlled base plate. Methods for manufacturing the heating plate include bonding together ceramic or polymer sheets having heater zones, branch transmission lines, common transmission lines and vias. The heating plate is capable of being driven by AC current or direct current phase alternating power, which has an advantage of minimizing DC magnetic field effects above the substrate support assembly and reduce plasma non-uniformity caused by DC magnetic fields.Type: ApplicationFiled: March 15, 2016Publication date: July 7, 2016Applicant: Lam Research CorporationInventors: John PEASE, Neil BENJAMIN
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Publication number: 20160155615Abstract: A capacitively-coupled plasma (CCP) processing system having a plasma processing chamber for processing a substrate is provided. The capacitively-coupled Plasma (CCP) processing system includes an upper electrode and a lower electrode for processing the substrate, which is disposed on the lower electrode during plasma processing. The capacitively-coupled Plasma (CCP) processing system also includes an array of inductor coils arrangement configured to inductively sustain plasma in a gap between the upper electrode and the lower electrode.Type: ApplicationFiled: February 3, 2016Publication date: June 2, 2016Inventors: Alexei MARAKHTANOV, Eric A. HUDSON, Rajinder DHINDSA, Neil BENJAMIN
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Patent number: 9287096Abstract: A capacitively-coupled plasma (CCP) processing system having a plasma processing chamber for processing a substrate is provided. The capacitively-coupled Plasma (CCP) processing system includes an upper electrode and a lower electrode for processing the substrate, which is disposed on the lower electrode during plasma processing. The capacitively-coupled Plasma (CCP) processing system also includes an array of inductor coils arrangement configured to inductively sustain plasma in a gap between the upper electrode and the lower electrode.Type: GrantFiled: September 24, 2008Date of Patent: March 15, 2016Assignee: Lam Research CorporationInventors: Alexei Marakhtanov, Eric Hudson, Rajinder Dhindsa, Neil Benjamin
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Publication number: 20150235811Abstract: A tunable multi-zone injection system for a plasma processing system for plasma processing of substrates such as semiconductor wafers. The injector can include an on-axis outlet supplying process gas at a first flow rate to a central zone and off-axis outlets supplying the same process gas at a second flow rate to an annular zone surrounding the central zone. The arrangement permits modification of gas delivery to meet the needs of a particular processing regime by allowing independent adjustment of the gas flow to multiple zones in the chamber. In addition, compared to consumable showerhead arrangements, a removably mounted gas injector can be replaced more easily and economically.Type: ApplicationFiled: May 4, 2015Publication date: August 20, 2015Applicant: LAM RESEARCH CORPORATIONInventors: David J. Cooperberg, Vahid Vahedi, Douglas Ratto, Harmeet Singh, Neil Benjamin
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Patent number: 9105449Abstract: A distributed power arrangement to provide local power delivery in a plasma processing system during substrate processing is provided. The distributed power arrangement includes a set of direct current (DC) power supply units. The distributed power arrangement also includes a plurality of power generators, which is configured to receive power from the set of DC power supply units. Each power generator of the plurality of power generators is coupled to a set of electrical elements, thereby enabling the each power generator of the plurality of power generators to control the local power delivery.Type: GrantFiled: June 24, 2008Date of Patent: August 11, 2015Assignee: Lam Research CorporationInventor: Neil Benjamin
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Publication number: 20150187619Abstract: A chuck for a plasma processor comprises a temperature-controlled base, a thermal insulator, a flat support, and a heater. The temperature-controlled base is controlled in operation a temperature below the desired temperature of a workpiece. The thermal insulator is disposed over at least a portion of the temperature-controlled base. The flat support holds a workpiece and is disposed over the thermal insulator. A heater is embedded within the flat support and/or mounted to an underside of the flat support. The heater includes a plurality of heating elements that heat a plurality of corresponding heating zones. The power supplied and/or temperature of each heating element is controlled independently. The heater and flat support have a combined temperature rate change of at least 1° C. per second.Type: ApplicationFiled: January 12, 2015Publication date: July 2, 2015Inventors: Neil Benjamin, Robert Steger
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Patent number: 9051647Abstract: A tunable multi-zone injection system for a plasma processing system for plasma processing of substrates such as semiconductor wafers. The system includes a plasma processing chamber, a substrate support for supporting a substrate within the processing chamber, a dielectric member having an interior surface facing the substrate support, the dielectric member forming a wall of the processing chamber, a gas injector fixed to part of or removably mounted in an opening in the dielectric window, the gas injector including a plurality of gas outlets supplying process gas at adjustable flow rates to multiple zones of the chamber, and an RF energy source such as a planar or non-planar spiral coil which inductively couples RF energy through the dielectric member and into the chamber to energize the process gas into a plasma state.Type: GrantFiled: October 23, 2009Date of Patent: June 9, 2015Assignee: Lam Research CorporationInventors: David J. Cooperberg, Valid Vahedi, Douglas Ratto, Harmeet Singh, Neil Benjamin
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Patent number: 8963052Abstract: A chuck for a plasma processor comprises a temperature-controlled base, a thermal insulator, a flat support, and a heater. The temperature-controlled base is controlled in operation a temperature below the desired temperature of a workpiece. The thermal insulator is disposed over at least a portion of the temperature-controlled base. The flat support holds a workpiece and is disposed over the thermal insulator. A heater is embedded within the flat support and/or mounted to an underside of the flat support. The heater includes a plurality of heating elements that heat a plurality of corresponding heating zones. The power supplied and/or temperature of each heating element is controlled independently. The heater and flat support have a combined temperature rate change of at least 1° C. per second.Type: GrantFiled: May 6, 2009Date of Patent: February 24, 2015Assignee: Lam Research CorporationInventors: Neil Benjamin, Robert Steger
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Patent number: 8921740Abstract: A chuck for a plasma processor comprises a temperature-controlled base, a thermal insulator, a flat support, and a heater. The temperature-controlled base has a temperature below the desired temperature of a workpiece. The thermal insulator is disposed over the temperature-controlled base. The flat support holds a workpiece and is disposed over the thermal insulator. A heater is embedded within the flat support and/or disposed on an underside of the flat support. The heater includes a plurality of heating elements that heat a plurality of corresponding heating zones. The power supplied and/or temperature of each heating element is controlled independently.Type: GrantFiled: August 13, 2013Date of Patent: December 30, 2014Assignee: Lam Research CorporationInventors: Neil Benjamin, Robert J. Steger
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Patent number: 8884194Abstract: A heating plate of a semiconductor substrate support for supporting a semiconductor substrate in a plasma processing chamber includes a first layer with an array of heater zones operable to tune a spatial temperature profile on the semiconductor substrate, and a second layer with one or more primary heaters to provide mean temperature control of the semiconductor substrate. The heating plate can be incorporated in a substrate support wherein a switching device independently supplies power to each one of the heater zones to provide time-averaged power to each of the heater zones by time divisional multiplexing of the switches.Type: GrantFiled: December 10, 2013Date of Patent: November 11, 2014Assignee: Lam Research CorporationInventors: Harmeet Singh, Keith Gaff, Neil Benjamin, Keith Comendant
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Publication number: 20140235063Abstract: An edge ring assembly is disclosed for use in a plasma processing chamber, which includes an RF conductive ring positioned on an annular surface of a base plate and configured to surround an upper portion of the baseplate and extend underneath an outer edge of a wafer positioned on the upper surface of the baseplate, and a wafer edge protection ring positioned above an upper surface of the RF conductive ring and configured to extend over the outer edge of the wafer. The protection ring has an inner edge portion with a uniform thickness, which extends over the outer edge of the wafer, a conical upper surface extending outward from the inner edge portion to a horizontal upper surface, an inner annular recess which is positioned on the upper surface of the RF conductive and configured to extend over the outer edge of the wafer.Type: ApplicationFiled: February 7, 2014Publication date: August 21, 2014Applicant: Lam Research CorporationInventors: Brian McMillin, Arthur Sato, Neil Benjamin
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Patent number: 8809747Abstract: A method of operating a heating plate for a substrate support assembly used to support a semiconductor substrate in a semiconductor processing apparatus, wherein the heating plate comprises power supply lines and power return lines and respective heater zone connected between every pair of power supply line and power return line. The method reduces maximum currents carried by the power supply lines and power return lines by temporally spreading current pulses for powering the heater zones.Type: GrantFiled: April 13, 2012Date of Patent: August 19, 2014Assignee: Lam Research CorporationInventors: John Pease, Neil Benjamin
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Patent number: 8755204Abstract: System and method for providing isolated power to a component that is also subject a set of RF signals that includes at least a first RF signal having a first RF frequency is provided. There is included providing a DC voltage signal and modulating the DC voltage signal into an isolated power signal using an isolation transformer. The isolated power signal has an intermediate frequency that is higher than 60 Hz and lower than the first RF frequency. There is included supplying the DC voltage signal to the primary winding and obtaining the isolated power signal from the secondary winding; and delivering the isolated power to the component using the isolated power signal.Type: GrantFiled: October 21, 2009Date of Patent: June 17, 2014Assignee: Lam Research CorporationInventor: Neil Benjamin
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Publication number: 20140154819Abstract: A semiconductor substrate support for supporting a semiconductor substrate in a plasma processing chamber includes a heater array comprising thermal control elements operable to tune a spatial temperature profile on the semiconductor substrate, the thermal control elements defining heater zones each of which is powered by two or more power supply lines and two or more power return lines wherein each power supply line is connected to at least two of the heater zones and each power return line is connected to at least two of the heater zones. A power distribution circuit is mated to a baseplate of the substrate support, the power distribution circuit being connected to each power supply line and power return line of the heater array. A switching device is connected to the power distribution circuit to independently provide time-averaged power to each of the heater zones by time divisional multiplexing of a plurality of switches.Type: ApplicationFiled: November 30, 2012Publication date: June 5, 2014Applicant: LAM RESEARCH CORPORATIONInventors: Keith William Gaff, Tom Anderson, Keith Comendant, Ralph Jan-Pin Lu, Paul Robertson, Eric A. Pape, Neil Benjamin