Patents Assigned to BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY, CO., LTD
  • Patent number: 11521847
    Abstract: Apparatus, systems, and methods for processing workpieces are provided. In one example implementation, a hydrogen gas mixed with an inert gas can be reacted with an oxygen gas to oxidize a workpiece at atmospheric pressure. A chemical reaction of a hydrogen gas with an oxygen gas facilitated by a hot workpiece surface can positively affect an oxidation process. A reaction speed of the chemical reaction can be slowed down by mixing the hydrogen gas with an inert gas. Such mixture can effectively reduce a partial pressure of the hydrogen gas. As such, the oxidation process can be carried out at atmospheric pressure, thereby, in an atmospheric thermal processing chamber.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: December 6, 2022
    Assignees: BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY CO., LTD., MATTSON TECHNOLOGY, INC.
    Inventors: Michael X. Yang, Christian Pfahler, Alexandr Cosceev
  • Patent number: 11515127
    Abstract: An end effector for moving workpieces and replaceable parts within a system for processing workpieces. The end effector may include an arm portion extending between a first arm end and a second arm end along the axial direction. The end effector may further include a spatula portion extending between a first spatula end and a second spatula end, the first spatula end being adjacent the second arm end. Further, the end effector may include a first support member extending outwardly from the spatula portion, a second support member extending outwardly from the spatula portion, and a shared support member extending outwardly from the arm portion. The shared support member and the first support member together to support workpieces of a first diameter, and the shared support member and the second support member together support replaceable parts of a second diameter.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: November 29, 2022
    Assignees: BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY CO., LTD, MATTSON TECHNOLOGY, INC.
    Inventors: Martin L. Zucker, Peter J. Lembesis, Ryan M. Pakulski
  • Patent number: 11508560
    Abstract: A focus ring adjustment assembly of a system for processing workpieces under vacuum, where the focus ring may include a lower side having a first surface portion and a second surface portion, the first surface portion being vertically above the second surface portion. The adjustment assembly may include a pin configured to selectively contact the first surface portion of the focus ring, and an actuator operable to move the pin along the vertical direction between an extended position and a retracted position. The extended position of the pin may be associated with the distal end of the pin contacting the first surface of the focus ring and the focus ring being accessible for removal by a workpiece handling robot from the vacuum process chamber.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: November 22, 2022
    Assignees: BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY CO., LTD, MATTSON TECHNOLOGY, INC.
    Inventors: Martin L. Zucker, Peter J. Lembesis, Ryan M. Pakulski, Shawming Ma
  • Patent number: 11495456
    Abstract: Processes for surface treatment of a workpiece are provided. In one example implementation, a method can include placing the workpiece on a workpiece support in a processing chamber. The method can include admitting a process gas into the processing chamber. The process gas can include an ozone gas. The method can include exposing the silicon nitride layer and the low-k dielectric layer to the process gas to modify a surface wetting angle of the silicon nitride layer.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: November 8, 2022
    Assignees: BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY, CO., LTD, MATTSON TECHNOLOGY, IN
    Inventors: Ting Xie, Xinliang Lu, Hua Chung, Michael X. Yang
  • Patent number: 11495437
    Abstract: Processes for oxidation of a workpiece are provided. In one example, a method includes placing a workpiece on a workpiece support in a processing chamber. The method includes performing a pre-oxidation treatment process on the workpiece in the processing chamber to initiate oxide layer formation on the workpiece. The method includes performing a remote plasma oxidation process on the workpiece in the processing chamber to continue the oxide layer formation on the workpiece. Subsequent to performing the pre-oxidation treatment process and the remote plasma oxidation process, the method can include removing the workpiece from the processing chamber. In some embodiments, the remote plasma oxidation process can include generating a first plasma from a remote plasma oxidation process gas in a plasma chamber; filtering species generated in the plasma to generate a mixture having one or more radicals; and exposing the one or more radicals to the workpiece.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: November 8, 2022
    Assignees: BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY, CO., LTD, MATTSON TECHNOLOGY, INC.
    Inventors: Ting Xie, Xinliang Lu, Hua Chung, Michael X. Yang
  • Patent number: 11462413
    Abstract: Apparatus, systems, and methods for conducting an etch removal process on a workpiece are provided. The method can include generating a plasma from a deposition process gas in a plasma chamber using a plasma source to deposit a passivation layer on certain layers of a high aspect ratio structure. The method can include generating a plasma from an etch process gas in a plasma chamber using a plasma source to remove certain layers from the high aspect ratio structure. The method can include removing silicon nitride layers at a faster etch rate than silicon dioxide layers on the high aspect ratio structure.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: October 4, 2022
    Assignees: BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY CO., LTD., MATTSON TECHNOLOGY, INC
    Inventors: Shanyu Wang, Chun Yan, Hua Chung, Michael X. Yang, Tsai Wen Sung, Qi Zhang
  • Patent number: 11387111
    Abstract: Methods for material removal of a film, such as a metal nitride film, from a workpiece are provided. One example implementation is directed to a method for processing a workpiece. The workpiece can include a film (e.g., a metal nitride film). The method can include generating one or more species (e.g., hydrogen radicals, excited inert gas molecules, etc.). The method can include mixing alkyl halide with the one or more species to generate one or more alkyl radicals. The method can include exposing the film to the one or more alkyl radicals.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: July 12, 2022
    Assignees: Mattson Technology, Inc., Beijing E-Town Semiconductor Technology, Co., LTD
    Inventors: Michael X. Yang, Hua Chung, Xinliang Lu
  • Patent number: 11387115
    Abstract: Apparatus, systems, and methods for conducting a silicon containing material removal process on a workpiece are provided. In one example implementation, the method can include generating species from a process gas in a first chamber using an inductive coupling element. The method can include introducing a fluorine containing gas with the species to create a mixture. The mixture can include exposing a silicon structure of the workpiece to the mixture to remove at least a portion of the silicon structure.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: July 12, 2022
    Assignees: BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY, CO., LTD, MATTSON TECHNOLOGY, INC.
    Inventors: Chun Yan, Tsai Wen Sung, Sio On Lo, Hua Chung, Michael X. Yang
  • Patent number: 11348784
    Abstract: Plasma processing apparatus and associated methods are provided. In one example, a plasma processing apparatus includes a plasma chamber. The plasma processing apparatus includes a dielectric wall forming at least a portion of the plasma chamber. The plasma processing apparatus includes an inductive coupling element located proximate the dielectric wall. The plasma processing apparatus includes an ultraviolet light source configured to emit an ultraviolet light beam onto a metal surface that faces an interior volume of the plasma chamber. The plasma processing apparatus includes a controller configured to control the ultraviolet light source.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: May 31, 2022
    Assignees: BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY CO., LTD, MATTSON TECHNOLOGY, INC.
    Inventors: Stephen E. Savas, Shawming Ma
  • Patent number: 11348767
    Abstract: A plasma processing apparatus is provided. The plasma processing apparatus includes a processing chamber defining a vertical direction and a lateral direction. The plasma processing apparatus includes a pedestal disposed within the processing chamber. The pedestal is configured to support the substrate. The plasma processing apparatus includes a radio frequency (RF) disposed within the processing chamber. The RF bias electrode defines a RF zone extending between a first end of the RF bias electrode and a second end of the RF bias electrode along the lateral direction. The plasma processing apparatus includes a focus ring disposed within the processing chamber. The plasma processing apparatus further includes a focus ring adjustment assembly. The focus ring adjustment assembly includes a lift pin positioned outside of the RF zone. The lift pin is movable along the vertical direction to adjust a distance between the pedestal and the focus ring along the vertical direction.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: May 31, 2022
    Assignees: BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY CO., LTD, MATTSON TECHNOLOGY, INC.
    Inventors: Martin L. Zucker, Peter J. Lembesis, Ryan M. Pakulski, Shawming Ma
  • Patent number: 11315801
    Abstract: Methods for processing a workpiece are provided. The workpiece can include a ruthenium layer and a copper layer. In one example implementation, a method for processing a workpiece can include supporting a workpiece on a workpiece support. The method can include performing an ozone etch process on the workpiece to at least a portion of the ruthenium layer. The method can also include performing a hydrogen radical treatment process on a workpiece to remove at least a portion of an oxide layer on the copper layer.
    Type: Grant
    Filed: May 21, 2021
    Date of Patent: April 26, 2022
    Assignees: BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY CO., LTD, MATTSON TECHNOLOGY, INC.
    Inventors: Qi Zhang, Haichun Yang, Hua Chung, Michael X. Yang
  • Patent number: 11276560
    Abstract: Systems and methods for processing a workpiece are provided. In one example, a method includes placing a workpiece on a workpiece support in a processing chamber. The workpiece has at least one material layer and at least one structure thereon. The method includes admitting a process gas into a plasma chamber, generating one or more species from the process gas, and filtering the one or more species to create a filtered mixture. The method further includes providing RF power to a bias electrode to generate a second mixture and exposing the workpiece to the second mixture to etch a least a portion of the material layer and to form a film on at least a portion of the material layer.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: March 15, 2022
    Assignees: Mattson Technology, Inc., Beijing E-Town Semiconductor Technology Co., Ltd.
    Inventors: Tsai Wen Sung, Chun Yan, Michael X. Yang
  • Patent number: 11264249
    Abstract: Apparatus, systems, and methods for conducting a hardmask (e.g., carbon containing hardmask) removal process on a workpiece are provided. In one example implementation, a process can include admitting a process gas into a plasma chamber, generating a plasma in the plasma chamber from the process gas using an inductively coupled plasma source, and exposing the carbon containing hardmask to the plasma to remove at least a portion of the carbon containing hardmask. The process gas can include a sulfur containing gas. The process gas does not include a halogen containing gas. The inductively coupled plasma source can be separated from the plasma chamber by a grounded electrostatic shield to reduce capacitive coupling between the inductively coupled plasma source and the plasma.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: March 1, 2022
    Assignees: Mattson Technology, Inc., Beijing E-Town Semiconductor Technology Co., Ltd.
    Inventors: Fen Dai, Tinghao Wang, Oliver D. Jan, Moo-Hyun Kim, Shawming Ma, Zhongming Liu
  • Patent number: 11255606
    Abstract: Systems and methods for gas flow in a thermal processing system are provided. In some example implementations a gas flow pattern inside the process chamber of a millisecond anneal system can be improved by implementing one or more of the following: (1) altering the direction, size, position, shape and arrangement of the gas injection inlet nozzles, or a combination hereof; (2) use of gas channels in a wafer plane plate connecting the upper chamber with the lower chamber of a millisecond anneal system; and/or (3) decreasing the effective volume of the processing chamber using a liner plate disposed above the semiconductor substrate.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: February 22, 2022
    Assignees: Mattson Technology, Inc., Beijing E-Town Semiconductor Technology Co., Ltd.
    Inventors: Christian Pfahler, Joseph Cibere
  • Patent number: 11257696
    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: February 5, 2020
    Date of Patent: February 22, 2022
    Assignees: Mattson Technology, Inc., Beijing E-Town Semiconductor Technology Co., Ltd.
    Inventors: Michael Yang, Ryan Pakulski
  • Patent number: 11257680
    Abstract: Methods for processing a workpiece with fluorine radicals are provided. In one example implementation, the method includes a workpiece having at least one silicon layer and at least one silicon germanium layer. The method can include placing the workpiece on a workpiece support in a processing chamber. The method can include generating one or more species from a process gas in a plasma chamber. The method can include filtering the one or more species to create a filtered mixture. The method can include exposing the workpiece to the filtered mixture to remove at least a portion of the at least one silicon layer.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: February 22, 2022
    Assignees: Mattson Technology, Inc., Beijing E-Town Semiconductor Technology Co., Ltd.
    Inventors: Qi Zhang, Xinliang Lu
  • Patent number: 11251050
    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: June 18, 2020
    Date of Patent: February 15, 2022
    Assignees: Mattson Technology, Inc., Beijing E-Town Semiconductor Technology Co., Ltd.
    Inventors: Qi Zhang, Xinliang Lu, Hua Chung, Haichun Yang
  • Patent number: 11251026
    Abstract: Focus ring assemblies for plasma processing apparatus are provided. In one example implementation, an apparatus includes a plasma source configured to generate a plasma. The apparatus includes a chamber configured to receive a workpiece. The apparatus includes a workpiece support contained in the chamber and configured to support the workpiece. The apparatus includes a focus ring assembly. The focus ring assembly includes a focus ring having an upper tier and a lower tier. An inner edge of the upper tier can be separated a lateral distance of at least about 3 mm from an outer edge of the workpiece located on the workpiece support.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: February 15, 2022
    Assignees: Mattson Technology, Inc., Beijing E-Town Semiconductor Technology Co., Ltd.
    Inventors: Jeffrey Cue, Martin L. Zucker
  • Patent number: 11251075
    Abstract: Plasma processing systems and methods are provided. In one example, a system includes a processing chamber having a workpiece support. The workpiece is configured to support a workpiece. The system includes a plasma source configured to induce a plasma from a process gas in a plasma chamber to generate one or more species of negative ions. The system includes a grid structure configured to accelerate the one or more negative ions towards the workpiece. The grid structure can include a first grid plate, a second grid plate, and one or more magnetic elements positioned between the first grid plate and second grid plate to reduce electrons accelerated through the first grid plate. The system can include a neutralizer cell disposed downstream of the grid structure configured to detach extra electrons from ions of the one or more species of negative ions to generate energetic neutral species for processing the workpiece.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: February 15, 2022
    Assignees: Mattson Technology, Inc., Beijing E-Town Semiconductor Technology Co., Ltd.
    Inventor: Stephen E. Savas
  • Patent number: 11201036
    Abstract: Plasma strip tools with process uniformity control are provided. In one example implementation, a plasma processing apparatus includes a processing chamber, a first pedestal in the processing chamber operable to support a workpiece, and a second pedestal in the processing chamber operable to support another workpiece. The first pedestal can define a first processing station. The second pedestal can define a second processing station. The apparatus can further include a first plasma chamber disposed above the first processing station and a second plasma chamber disposed above the second processing station. The first plasma chamber can be associated with a first inductive plasma source. The first plasma chamber can be separated from the processing chamber by a first separation grid. The second plasma chamber can be associated with a second inductive plasma source. The second plasma chamber can be separated from the processing chamber by a second separation grid.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: December 14, 2021
    Assignees: Beijing E-Town Semiconductor Technology Co., LTD, Mattson Technology, Inc.
    Inventors: Shawming Ma, Vladimir Nagorny, Dixit V. Desai, Ryan Pakulski