Patents Assigned to Mattson Technology, Inc.
  • Patent number: 10872761
    Abstract: Defluorination processes for removing fluorine residuals from a workpiece such as a semiconductor wafer are provided. In one example implementation, a method for processing a workpiece can include supporting a workpiece on a workpiece support. The workpiece can have a photoresist layer. The workpiece can have one or more fluorine residuals on a surface of the workpiece. The method can include performing a defluorination process on the workpiece at least in part using a plasma generated from a first process gas. The first process gas can include a hydrogen gas. Subsequent to performing the defluorination process, the method can include performing a plasma strip process on the workpiece to at least partially remove a photoresist layer from the workpiece.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: December 22, 2020
    Assignees: Mattson Technology Inc., Beijing E-Town Seminconductor Technology Co., Ltd.
    Inventors: Vijay Vaniapura, Andrei Gramada
  • Patent number: 10804109
    Abstract: Surface treatment processes for treating low-k dielectric materials are provided. One example implementation can include a method for processing a workpiece. The workpiece can include a silicon and carbon containing film material. The method can include treating the workpiece with a surface treatment process. The surface treatment process can include generating one or more species in a first chamber; mixing one or more hydrocarbon molecules with the species to create a mixture comprising one or more organic radicals; and exposing the silicon and carbon containing layer on the workpiece to the mixture in a second chamber.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: October 13, 2020
    Assignees: MATTSON TECHNOLOGY, INC., BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY CO., LTD.
    Inventors: Michael X. Yang, Hua Chung, Xinliang Lu
  • Patent number: 10790119
    Abstract: Plasma processing with post plasma gas injection is provided. In one example implementation, a plasma processing apparatus includes a plasma chamber. The apparatus includes a processing chamber separated from the plasma chamber. The processing chamber includes a substrate holder operable to support a workpiece. The apparatus includes a plasma source configured to generate a plasma in the plasma chamber. The apparatus includes a separation grid separating the plasma chamber from the processing chamber. The separation grid can be configured to filter one or more ions generated in the plasma and allow the passage of neutral particles from the plasma chamber to the processing chamber. The apparatus can include at least one gas port configured to inject a gas into neutral particles passing through the separation grid.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: September 29, 2020
    Assignees: MATTSON TECHNOLOGY, INC, BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY CO., LTD.
    Inventors: Shawming Ma, Vladimir Nagorny, Dixit V. Desai, Ryan Pakulski
  • Patent number: 10770309
    Abstract: Systems and methods for improving process uniformity in a millisecond anneal system are provided. In some implementations, a process for thermally treating a substrate in a millisecond anneal system can include obtaining data indicative of a temperature profile associated with one or more substrates during processing in a millisecond anneal system. The process can include one or more of (1) changing the pressure inside the processing chamber of the millisecond anneal system; (2) manipulating the irradiation distribution by way of the refracting effect of a water window in the millisecond anneal system; (3) adjusting the angular positioning of the substrate; and/or (4) configuring the shape of the reflectors used in the millisecond anneal system.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: September 8, 2020
    Assignees: MATTSON TECHNOLOGY, INC., BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY CO., LTD.
    Inventors: Alexandr Cosceev, Markus Hagedorn, Christian Pfahler
  • Patent number: 10760976
    Abstract: Thermal imaging of heat sources in thermal processing systems for determination of workpiece temperature are provided. In one example, a thermal processing apparatus can include a processing chamber, a workpiece support, a plurality of heat sources configured to heat a workpiece, and at least one camera. The at least one camera can capture one or more images of thermal radiation of the plurality of heat sources during thermal treatment of the workpiece. In one example, a method for calibrating the camera can include obtaining the one or more images of thermal radiation of at least one heat source, obtaining one or more reference signals indicative of irradiation of the at least one heat source, and calibrating the camera based at least in part on a comparison between the one or more images of thermal radiation and the one or more reference signals indicative of irradiation of the heat source.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: September 1, 2020
    Assignees: MATTSON TECHNOLOGY, INC., BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY CO., LTD.
    Inventor: Michael X. Yang
  • Patent number: 10734262
    Abstract: Systems and methods for substrate support in a millisecond anneal system are provided. In one example implementation, a millisecond anneal system includes a processing chamber having a wafer support plate. A plurality of support pins can extend from the wafer support plate. The support pins can be configured to support a substrate. At least one of the support pins can have a spherical surface profile to accommodate a varying angle of a substrate surface normal at the point of contact with the substrate. Other example aspects of the present disclosure are directed to methods for estimating, for instance, local contact stress at the point of contact with the support pin.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: August 4, 2020
    Assignees: Mattson Technology, Inc., Beijing E-Town Semiconductor Technology Co., Ltd.
    Inventor: Joseph Cibere
  • Patent number: 10727140
    Abstract: Preheat processes for a millisecond anneal system are provided. In one example implementation, a preheat process can include receiving a substrate on a wafer support plate in a processing chamber of a millisecond anneal system; obtaining one or more temperature measurements of the wafer support plate using a temperature sensor; and applying a preheat recipe to heat the wafer support plate based at least in part on the temperature of the wafer support plate. In one example implementation, a preheat process can include obtaining one or more temperature measurements from a temperature sensor having a field of view of a wafer support plate in a millisecond anneal system; and applying a pulsed preheat recipe to heat the wafer support plate in the millisecond anneal system based at least in part on the one or more temperature measurements.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: July 28, 2020
    Assignees: MATTSON TECHNOLOGY, INC., BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY CO., LTD.
    Inventors: Markus Lieberer, Christian Pfahler, Markus Hagedorn, Michael vanAbbema, Alexandr Cosceev
  • Patent number: 10692730
    Abstract: Systems and methods for processing a workpiece are provided. In one example, a method includes exposing the workpiece to a first gas mixture when the workpiece is at a first temperature to conduct a doped silicate glass etch process. The first gas mixture can include hydrofluoric acid (HF) vapor. The doped silicate glass etch process at least partially removes the doped silicate glass layer at a first etch rate that is greater than a second etch rate associated with removal of the at least one second layer. The method can include heating the workpiece to a second temperature. The second temperature is greater than the first temperature. The method can include exposing the workpiece to a second gas mixture when the workpiece is at a second temperature to remove a residue from the workpiece.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: June 23, 2020
    Assignees: Mattson Technology, Inc., Beijing E-Town Semiconductor Technology Co., Ltd.
    Inventors: Qi Zhang, Xinliang Lu, Hua Chung, Haichun Yang
  • Patent number: 10679864
    Abstract: Preheat processes for a millisecond anneal system are provided. In one example implementation, a heat treatment process can include receiving a substrate on a wafer support in a processing chamber of a millisecond anneal system; heating the substrate to an intermediate temperature; and heating the substrate using a millisecond heating flash. Prior to heating the substrate to the intermediate temperature, the process can include heating the substrate to a pre-bake temperature for a soak period.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: June 9, 2020
    Assignees: Mattson Technology, Inc., Beijing E-Town Semiconductor Technology Co., Ltd.
    Inventor: Paul Timans
  • Patent number: 10599039
    Abstract: Processes for removing a mask layer (e.g., doped amorphous carbon mask layer) from a substrate with high aspect ratio structures are provided. In one example implementation, a process can include depositing a polymer layer on at least a portion of a top end of a high aspect ratio structure on a substrate. The process can further include removing at least a portion of the polymer layer and the doped amorphous carbon film form the substrate using a plasma strip process. In example embodiments, depositing a polymer layer can include plugging one or more high aspect ratio structures with the polymer layer. In example embodiments, depositing a polymer layer can include forming a polymer layer on a sidewall of one or more high aspect ratio structures.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: March 24, 2020
    Assignees: MATTSON TECHNOLOGY, INC., BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY, CO., LTD
    Inventors: Vijay M. Vaniapura, Shawming Ma, Li Hou
  • Patent number: 10580661
    Abstract: A process for etching a film layer on a semiconductor wafer is disclosed. The process is particularly well suited to etching carbon containing layers, such as hardmask layers, photoresist layers, and other low dielectric films. In accordance with the present disclosure, a reactive species generated from a plasma is contacted with a surface of the film layer. Simultaneously, the substrate or semiconductor wafer is subjected to rapid thermal heating cycles that increase the temperature past the activation temperature of the reaction in a controlled manner.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: March 3, 2020
    Assignees: MATTSON TECHNOLOGY, INC., BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY, CO., LTD
    Inventor: Shawming Ma
  • Patent number: 10580672
    Abstract: Systems and methods for processing workpieces, such as semiconductor workpieces are provided. One example embodiment is directed to a processing system for processing a plurality of workpieces. The plasma processing system can include a loadlock chamber. The loadlock chamber can include a workpiece column configured to support a plurality of workpieces in a stacked arrangement. The system can further include at least two process chambers. The at least two process chambers can have at least two processing stations. Each processing station can have a workpiece support for supporting a workpiece during processing in the process chamber. The system further includes a transfer chamber in process flow communication with the loadlock chamber and the process chamber. The transfer chamber includes a rotary robot. The rotary robot can be configured to transfer a plurality of workpieces from the stacked arrangement in the loadlock chamber to the at least two processing stations.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: March 3, 2020
    Assignees: MATTSON TECHNOLOGY, INC., BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY, CO., LTD
    Inventors: Michael Yang, Ryan Pakulski
  • Patent number: 10573532
    Abstract: A method for processing a workpiece is provided. The method can include placing a workpiece on a susceptor disposed within a processing chamber. The method can include performing a multi-cycle thermal treatment process on the workpiece in the processing chamber. The multi-cycle thermal treatment process can include at least two thermal cycles. Each thermal cycle of the at least two thermal cycles can include performing a first treatment on the workpiece at a first temperature; heating a device side surface of the workpiece to a second temperature in less than one second; performing a second treatment on the workpiece at approximately the second temperature; and cooling the workpiece subsequent to performing the second treatment.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: February 25, 2020
    Assignees: MATTSON TECHNOLOGY, INC., BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY, CO., LTD
    Inventors: Michael X. Yang, Shawming Ma
  • Patent number: 10431469
    Abstract: A method for removing photoresist, an oxidation layer, or both from a semiconductor substrate is disclosed. The method includes placing a substrate in a processing chamber, the processing chamber separate from a plasma chamber for generating a non-oxidizing plasma to be used in treating the substrate; generating a first non-oxidizing plasma from a first reactant gas and a first carrier gas in the plasma chamber, wherein the first non-oxidizing plasma comprises from about 10% to about 40% of the first reactant gas, wherein the first reactant gas has a flow rate of from about 100 standard cubic centimeters per minute to about 15,000 standard cubic centimeters per minute, and wherein the first carrier gas has a flow rate of from about 500 standard cubic centimeters per minute to about 20,000 standard cubic centimeters per minute; and treating the substrate by exposing the substrate to the first non-oxidizing plasma in the processing chamber.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: October 1, 2019
    Assignee: Mattson Technology, Inc.
    Inventors: Li Diao, Robert George Elliston, David Gilbert, Chan-Yun Lee, James Paris, HaiAu PhanVu, Tom Tillery, Vijay Matthew Vaniapura
  • Patent number: 10403492
    Abstract: Processes for surface treatment of a workpiece are provided. In one example implementation, organic radicals (e.g., methyl CH3 radicals) can be generated by exciting and/or dissociating hydrogen and/or inert gas (e.g., Ar, He, etc) molecules in a remote plasma source and a subsequent reaction with organic molecule (alkanes and alkenes). The organic radicals (e.g., methyl CH3 radicals) can be exposed to the silicon and/or silicon germanium surfaces. After exposure to the organic radicals, the silicon and/or silicon germanium surfaces can be stable in air for a time period (e.g., days) with reduced surface oxidation such that the silicon and/or silicon germanium surfaces can be effectively protected from oxidation. As such, native surface oxide removal process before subsequent process steps can be eliminated.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: September 3, 2019
    Assignee: Mattson Technology, Inc.
    Inventors: Michael X. Yang, Hua Chung, Xinliang Lu, Haochen Li, Ting Xie, Qi Zhang
  • Patent number: 10388552
    Abstract: Apparatus, systems, and processes for substrate breakage detection in a thermal processing system are provided. In one example implementation, a process can include: accessing data indicative of a plurality of temperature measurements for a substrate, the plurality of measurements obtained during a cool down period of a thermal process; estimating one or more metrics associated with a cooling model based at least in part on the data indicative of the plurality of temperature measurements; and determining a breakage detection signal based at least in part on the one or more metrics associated with the cooling model. The breakage detection signal is indicative of whether the substrate has broken during thermal processing.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: August 20, 2019
    Assignee: Mattson Technology, Inc.
    Inventor: Joseph Cibere
  • Patent number: 10359334
    Abstract: Systems and methods for detecting a fluid leak associated with fluid cooled components in a millisecond anneal system are provided. In one example implementation, a millisecond anneal system can include a processing chamber having one or more fluid cooled components. The system can include a gas flow system configured to provide for the flow of process gas in the processing chamber. The system can include a vapor sensor configured to measure vapor in process gas flowing through the gas flow system for detecting a fluid leak associated with the one or more fluid cooled components.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: July 23, 2019
    Assignee: Mattson Technology, Inc.
    Inventors: Manuel Mueller, Dieter Hezler
  • Patent number: 10354883
    Abstract: Processes for surface treatment of a workpiece are provided. In one example implementation, a method can include performing an organic radical based surface treatment process on a workpiece. The organic radical based surface treatment process can include generating one or more species in a first chamber. The surface treatment process can include mixing one or more hydrocarbon molecules with the species to create a mixture. The mixture can include one or more organic radicals. The surface treatment process can include exposing a semiconductor material on the workpiece to the mixture in a second chamber.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: July 16, 2019
    Assignee: Mattson Technology, Inc.
    Inventors: Michael X. Yang, Hua Chung, Xinliang Lu
  • Patent number: 10297457
    Abstract: Apparatus, systems, and methods for controlling azimuthal uniformity of an etch process in a plasma processing chamber are provided. In one embodiment, a plasma processing apparatus can include a plasma processing chamber and an RF cage disposed above the plasma processing chamber. A dielectric window can separate the plasma processing chamber and the RF cage. The apparatus can include a plasma generating coil disposed above the dielectric window. The plasma generating coil can be operable to generate an inductively coupled plasma in the plasma processing chamber when energized. The apparatus further includes a conductive surface disposed within the RF cage proximate to at least a portion of the plasma generating coil. The conductive surface is arranged to generate an azimuthally variable inductive coupling between the conductive surface and the plasma generating coil when the plasma generating coil is energized.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: May 21, 2019
    Assignee: Mattson Technology, Inc.
    Inventor: Vladimir Nagorny
  • Patent number: 10269574
    Abstract: Surface treatment processes for treating a workpiece with organic radicals are provided. In one example implementation, a method for processing a workpiece having a semiconductor material and a carbon containing layer (e.g., photoresist) can include a surface treatment process on the workpiece. The surface treatment process can include generating one or more species in a first chamber (e.g., a plasma chamber). The surface treatment process can include mixing one or more hydrocarbon radicals with the species to create a mixture. The surface treatment process can include exposing the carbon containing layer to the mixture in a second chamber (e.g., a processing chamber).
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: April 23, 2019
    Assignee: MATTSON TECHNOLOGY, INC.
    Inventors: Michael X. Yang, Hua Chung, Xinliang Lu