Patents Assigned to Plasma-Therm NES LLC
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Patent number: 12176178Abstract: The present disclosure provides a method to adjust asymmetric velocity of a scan in a scanning ion beam deposition or etch process to correct asymmetry of depositing or etching between the inboard side and the outboard side of device structures on a wafer, while maintaining the overall uniformity of the respective deposition or etch across the full wafer.Type: GrantFiled: March 3, 2022Date of Patent: December 24, 2024Assignee: PLASMA-THERM NES LLCInventors: Sarpangala Hariharakeshava Hegde, Vincent Lee
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Publication number: 20240368752Abstract: The present disclosure provides an improved dynamic seal system for a vacuum processing system that has a vacuum chamber within a process module. A rotational wafer stage is positioned within the process module. A first fluid line is operatively connected to the rotational wafer stage. A first differential pump line is operatively connected to the rotational wafer stage. A dynamic seal surrounds the first fluid line and the first differential pump line. The differential pumping of the dynamic seal by the first differential pump line, drains the first fluid from the dynamic seal to outside the tilt housing allowing for the monitoring of the dynamic seal for the presence of the first fluid outside the process module.Type: ApplicationFiled: May 1, 2023Publication date: November 7, 2024Applicant: Plasma-Therm NES LLCInventors: Sarpangala Hariharakeshava Hegde, Vincent C. Lee, Wei-Hua Hsiao, Jerome Michael Buckley
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Patent number: 11901167Abstract: The present disclosure provides a method for increased target utilization within a sputtering system. A plurality of targets are provided wherein each target is operatively connected to a central axis. An ion beam is generated within the sputtering system. The generated ion beam is directed at a first location of a first target for a first time period. Each target is moved by rotating the central axis. The generated ion beam is directed at a second location of the first target for a second time period.Type: GrantFiled: April 18, 2022Date of Patent: February 13, 2024Assignee: PLASMA-THERM NES LLCInventors: Sarpangala Hariharakeshava Hegde, Vincent C. Lee, Wei-Hua Hsiao, Joseph Barraco
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Publication number: 20230343727Abstract: The present disclosure provides several methods for processing a substrate within a shutterless ion beam etching (IBE) system or shutterless ion assist ion beam deposition (IBD) system while preventing electrostatic damage to the substrate. In the IBE, at an etch completion, the ion energy to the ion source is reduced to less than 20 electron volts while at least one of the devices of the plurality of devices on the top surface of the substrate is exposed to a portion of the ion beam. In the IBD, at a deposition ion assist completion, the ion energy from the second ion source is reduced to less than 20 electron volts while at least one of the devices of the plurality of devices on the top surface of the substrate is exposed to the second ion beam.Type: ApplicationFiled: March 8, 2023Publication date: October 26, 2023Applicant: Plasma-Therm NES LLCInventors: Sarpangala Hariharakeshava Hegde, Armin Baur, Wei-Hua Hsiao, Russell Westerman, Jerome Michael Buckley
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Publication number: 20230343557Abstract: The present disclosure provides a method of processing a substrate within an ion beam system. The substrate has a top surface that has a plurality of features, an edge and a bottom surface. The substrate is placed on a wafer stage and an energetic particle beam having a radial flux distribution over at least a portion of a major dimension thereof is ignited. The energetic particle beam is stabilized while the bottom surface of the substrate is oriented toward the major dimension of the energetic particle beam. The wafer stage with the substrate is oriented so that the top surface of the substrate is exposed to the major dimension of the energetic particle beam. After stabilization of the energetic particle beam, the plurality of features on the top surface of the substrate are exposed to the energetic particle beam in a treatment zone.Type: ApplicationFiled: April 23, 2022Publication date: October 26, 2023Applicant: Plasma-Therm NES LLCInventors: Sarpangala Hariharakeshava Hegde, Armin Baur, Wei-Hua Hsiao, Russell Westerman
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Publication number: 20230335383Abstract: The present disclosure provides a method for increased target utilization within a sputtering system. A plurality of targets are provided wherein each target is operatively connected to a central axis. An ion beam is generated within the sputtering system. The generated ion beam is directed at a first location of a first target for a first time period. Each target is moved by rotating the central axis. The generated ion beam is directed at a second location of the first target for a second time period.Type: ApplicationFiled: April 18, 2022Publication date: October 19, 2023Applicant: Plasma-Therm NES LLCInventors: Sarpangala Hariharakeshava Hegde, Vincent C. Lee, Wei-Hua Hsiao, Joseph Barraco
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Patent number: 11784025Abstract: The present disclosure provides a method of achieving an integral number of sweeps within an ion beam. A substrate having a fiducial is placed on a wafer stage within the ion beam system. An energetic particle beam is generated within the ion beam system. The substrate is exposed to the energetic particle beam while the wafer stage with the substrate is rotated clockwise so that the fiducial of the substrate travels a sweep distance in a clockwise direction at a first speed and the fiducial of the substrate travels the same sweep distance in a counterclockwise direction at a second speed. The exposure of the substrate to the energetic particle beam is discontinued when the number of complete/full sweeps in the clockwise direction equals the number of complete/full sweeps in the counterclockwise direction.Type: GrantFiled: May 10, 2022Date of Patent: October 10, 2023Assignee: PLASMA-THERM NES LLCInventors: Sarpangala Hariharakeshava Hegde, Armin Baur, Wei-Hua Hsiao
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Patent number: 11646171Abstract: The present disclosure provides a method to adjust asymmetric velocity of a scan in a scanning ion beam etch process to correct asymmetry of etching between the inboard side and the outboard side of device structures on a wafer, while maintaining the overall uniformity of etch across the full wafer.Type: GrantFiled: November 27, 2021Date of Patent: May 9, 2023Assignee: PLASMA-THERM NES LLCInventors: Sarpangala Hariharakeshava Hegde, Vincent Lee
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Publication number: 20220189727Abstract: The present disclosure provides a method to adjust asymmetric velocity of a scan in a scanning ion beam deposition or etch process to correct asymmetry of depositing or etching between the inboard side and the outboard side of device structures on a wafer, while maintaining the overall uniformity of the respective deposition or etch across the full wafer.Type: ApplicationFiled: March 3, 2022Publication date: June 16, 2022Applicant: Plasma-Therm NES LLCInventors: Sarpangala Hariharakeshava Hegde, Vincent Lee
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Publication number: 20220084779Abstract: The present disclosure provides a method to adjust asymmetric velocity of a scan in a scanning ion beam etch process to correct asymmetry of etching between the inboard side and the outboard side of device structures on a wafer, while maintaining the overall uniformity of etch across the full wafer.Type: ApplicationFiled: November 27, 2021Publication date: March 17, 2022Applicant: Plasma-Therm NES LLCInventors: Sarpangala Hariharakeshava Hegde, Vincent Lee
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Patent number: 11227741Abstract: The present disclosure provides a method to adjust asymmetric velocity of a scan in a scanning ion beam etch process to correct asymmetry of etching between the inboard side and the outboard side of device structures on a wafer, while maintaining the overall uniformity of etch across the full wafer.Type: GrantFiled: April 30, 2019Date of Patent: January 18, 2022Assignee: PLASMA-THERM NES LLCInventors: Sarpangala Hariharakeshava Hegde, Vincent Lee
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Publication number: 20190341221Abstract: The present disclosure provides a method to adjust asymmetric velocity of a scan in a scanning ion beam etch process to correct asymmetry of etching between the inboard side and the outboard side of device structures on a wafer, while maintaining the overall uniformity of etch across the full wafer.Type: ApplicationFiled: April 30, 2019Publication date: November 7, 2019Applicant: Plasma-Therm NES LLCInventors: Sarpangala Hariharakeshava Hegde, Vincent Lee
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Patent number: 9863036Abstract: A planetary arm coupled to a tilt actuator moves a wafer in oscillatory motion along an arcuate path to expose a surface of the wafer to an incident ion beam for deposition and/or etching processing of thin film structures on the surface of the wafer. A wafer holder on an end of the planetary arm may be driven in rotation while the planetary arm executes oscillatory motion at a selected tilt angle relative to an incident ion beam. A slit support plate provides controllable exposure of the wafer to the incident beam. Embodiments are suitable for use in wafer deposition machines and/or wafer etching machines.Type: GrantFiled: April 27, 2015Date of Patent: January 9, 2018Assignee: Plasma-Therm NES LLCInventors: Sarpangala H. Hegde, Vincent Lee, Peter Goglia
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Patent number: 9865436Abstract: The present invention provides a charged particle source comprising a plasma processing chamber that has a plasma source, a gas supply and an ion extraction grid that are each operatively connected to the processing chamber. A conducting plate is located adjacent to a wall of the plasma source. The conducting plate has a surface with a plurality of grooves that face the wall of the plasma source. A substrate support is disposed within an interior portion of the processing chamber for supporting a substrate.Type: GrantFiled: July 10, 2016Date of Patent: January 9, 2018Assignee: PLASMA-THERM NES LLCInventors: Sarpangala H. Hegde, VIncent Lee
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Publication number: 20170140953Abstract: An ion system for use in an etching system for etching at least a wafer using a gas. The ion system may include an ion chamber for containing charged particles generated from the gas. The ion system may also include a magnetic device surrounding at least a portion of the ion chamber. The magnetic device may affect the distribution of the charged particles in the ion chamber. The ion system may also include a grid assembly disposed between the ion chamber and the wafer when the wafer is etched. The charged particles may be provided through the grid assembly to etch the wafer when the wafer is etched.Type: ApplicationFiled: October 2, 2008Publication date: May 18, 2017Applicant: Plasma-Therm NES LLCInventor: Hari Hegde