Patents by Inventor S. M. Reza Sadjadi
S. M. Reza Sadjadi 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).
-
Patent number: 10410889Abstract: In some embodiments, a plasma processing apparatus includes a processing chamber to process a substrate; a mounting surface defined within the processing chamber to support a substrate disposed within the processing chamber; a showerhead disposed within the processing chamber and aligned so as to face the mounting surface, the showerhead defining a plurality of orifices to introduce a process gas into the processing chamber toward a substrate disposed within the processing chamber; and one or more magnets supported by the showerhead and arranged so that a radial component of a magnetic field applied by each of the one or more magnets has a higher flux density proximate a first region corresponding to an edge surface region of a substrate when disposed within the processing chamber than at a second region corresponding to an interior surface region of a substrate when disposed within the processing chamber.Type: GrantFiled: June 30, 2015Date of Patent: September 10, 2019Assignee: APPLIED MATERIALS, INC.Inventors: S. M. Reza Sadjadi, Haitao Wang, Jie Zhou, Tza-Jing Gung, Chunlei Zhang, Fernando M. Silveira
-
Patent number: 10177050Abstract: A dynamically tunable process kit, a processing chamber having a dynamically tunable process kit, and a method for processing a substrate using a dynamically tunable process kit are provided. The dynamically tunable process kit allows one or both of the electrical and thermal state of the process kit to be changed without changing the physical construction of the process kit, thereby allowing plasma properties, and hence processing results, to be easily changed without replacing the process kit. The processing chamber having a dynamically tunable process kit includes a chamber body that includes a portion of a conductive side wall configured to be electrically controlled, and a process kit. The processing chamber includes a first control system operable to control one or both of an electrical and thermal state of the process kit and a second control system operable to control an electrical state of the portion of the side wall.Type: GrantFiled: July 18, 2016Date of Patent: January 8, 2019Assignee: Applied Materials, Inc.Inventors: S. M. Reza Sadjadi, Dmitry Lubomirsky, Hamid Noorbakhsh, John Zheng Ye, David H. Quach, Sean S. Kang
-
Publication number: 20170110358Abstract: Implementations described herein provide a chucking circuit for a pixilated electrostatic chuck which enables both lateral and azimuthal tuning of the RF coupling between an electrostatic chuck and a substrate placed thereon. In one embodiment, a chucking circuit for an electrostatic chuck (ESC) has one or more chucking electrodes disposed in a dielectric body of the ESC, a plurality of pixel electrodes disposed in the dielectric body, and a chucking circuit having the one or more chucking electrodes and the plurality of pixel electrodes, the chucking circuit operable to electrostatically chuck a substrate to a workpiece support surface of the ESC, the chucking circuit having a plurality of secondary circuits, wherein each secondary circuit includes at least one capacitor of a plurality of capacitors, each secondary circuit is configured to independently control an impedance between one of the pixel electrodes and a ground.Type: ApplicationFiled: December 30, 2016Publication date: April 20, 2017Inventors: S. M. Reza SADJADI, Wendell Glen BOYD, JR., Vijay D. PARKHE, Maxim Mikhailovich NOGINOV
-
Publication number: 20160329256Abstract: A dynamically tunable process kit, a processing chamber having a dynamically tunable process kit, and a method for processing a substrate using a dynamically tunable process kit are provided. The dynamically tunable process kit allows one or both of the electrical and thermal state of the process kit to be changed without changing the phyisical construction of the process kit, thereby allowing plasma properties, and hence processing results, to be easily changed without replacing the process kit. The processing chamber having a dynamically tunable process kit includes a chamber body that includes a portion of a conductive side wall configured to be electrically controlled, and a process kit. The processing chamber includes a first control system operable to control one or both of an electrical and thermal state of the process kit and a second control system operable to control an electrical state of the portion of the side wall.Type: ApplicationFiled: July 18, 2016Publication date: November 10, 2016Inventors: S. M. Reza SADJADI, Dmitry LUBOMIRSKY, Hamid NOORBAKHSH, John Zheng YE, David H. QUACH, Sean S. KANG
-
Patent number: 9412579Abstract: A dynamically tunable process kit, a processing chamber having a dynamically tunable process kit, and a method for processing a substrate using a dynamically tunable process kit are provided. The dynamically tunable process kit allows one or both of the electrical and thermal state of the process kit to be changed without changing the physical construction of the process kit, thereby allowing plasma properties, and hence processing results, to be easily changed without replacing the process kit. The processing chamber having a dynamically tunable process kit includes a chamber body that includes a portion of a conductive side wall configured to be electrically controlled, and a process kit. The processing chamber includes a first control system operable to control one or both of an electrical and thermal state of the process kit and a second control system operable to control an electrical state of the portion of the side wall.Type: GrantFiled: February 13, 2013Date of Patent: August 9, 2016Assignee: Applied Materials, Inc.Inventors: S. M. Reza Sadjadi, Dmitry Lubomirsky, Hamid Noorbakhsh, John Zheng Ye, David H. Quach, Sean S. Kang
-
Patent number: 9384979Abstract: A method for depositing a conformal film on a substrate in a plasma processing chamber of a plasma processing system, the substrate being disposed on a chuck, the chuck being coupled to a cooling apparatus, is disclosed. The method includes flowing a first gas mixture into the plasma processing chamber at a first pressure, wherein the first gas mixture includes at least carbon, and wherein the first gas mixture has a condensation temperature. The method also includes cooling the chuck below the condensation temperature using the cooling apparatus thereby allowing at least some of the first gas mixture to condense on a surface of the substrate. The method further includes venting the first gas mixture from the processing chamber; flowing a second gas mixture into the plasma processing chamber, the second gas mixture being different in composition from the first gas mixture; and striking a plasma to form the conformal film.Type: GrantFiled: September 28, 2012Date of Patent: July 5, 2016Assignee: Lam Research CorporationInventors: Dae-Han Choi, Jisoo Kim, Eric Hudson, Sangheon Lee, Conan Chiang, S. M. Reza Sadjadi
-
Publication number: 20160027667Abstract: In some embodiments, a plasma processing apparatus includes a processing chamber to process a substrate; a mounting surface defined within the processing chamber to support a substrate disposed within the processing chamber; a showerhead disposed within the processing chamber and aligned so as to face the mounting surface, the showerhead defining a plurality of orifices to introduce a process gas into the processing chamber toward a substrate disposed within the processing chamber; and one or more magnets supported by the showerhead and arranged so that a radial component of a magnetic field applied by each of the one or more magnets has a higher flux density proximate a first region corresponding to an edge surface region of a substrate when disposed within the processing chamber than at a second region corresponding to an interior surface region of a substrate when disposed within the processing chamber.Type: ApplicationFiled: June 30, 2015Publication date: January 28, 2016Inventors: S. M. REZA SADJADI, HAITAO WANG, JIE ZHOU, TZA-JING GUNG, CHUNLEI ZHANG, FERNANDO M. SILVEIRA
-
Patent number: 8986492Abstract: A method for forming an array area with a surrounding periphery area, wherein a substrate is disposed under an etch layer, which is disposed under a patterned organic mask defining the array area and covers the entire periphery area is provided. The patterned organic mask is trimmed. An inorganic layer is deposited over the patterned organic mask where a thickness of the inorganic layer over the covered periphery area of the organic mask is greater than a thickness of the inorganic layer over the array area of the organic mask. The inorganic layer is etched back to expose the organic mask and form inorganic spacers in the array area, while leaving the organic mask in the periphery area unexposed. The organic mask exposed in the array area is stripped, while leaving the inorganic spacers in place and protecting the organic mask in the periphery area.Type: GrantFiled: February 9, 2012Date of Patent: March 24, 2015Assignee: Lam Research CorporationInventors: S. M. Reza Sadjadi, Amit Jain
-
Patent number: 8911587Abstract: An apparatus for etching an etch layer formed on a substrate is provided. A first photoresist (PR) mask with first mask features is provided on the etch layer. The apparatus performs a process for providing a protective coating on the first PR mask. The process includes at least one cycle. Each cycle includes (a) a deposition phase for depositing a deposition layer over the surface of the first mask features using a deposition gas, and (b) a profile shaping phase for shaping the profile of the deposition layer using a profile shaping gas. A liquid PR material is applied over the first PR mask having the protective coating. The PR material is patterned into a second mask features, where the first and second mask features form a second PR mask. The etch layer is etched though the second PR mask.Type: GrantFiled: September 10, 2012Date of Patent: December 16, 2014Assignee: Lam Research CorporationInventors: Andrew R. Romano, S. M. Reza Sadjadi
-
Patent number: 8864931Abstract: A method for etching a dielectric layer is provided. A patterned mask with mask features is formed over a dielectric layer. The mask has isolated areas and dense areas of the mask features. The mask is trimmed by a plurality of cycles, where each cycle includes depositing a deposition layer, and selectively etching the deposition layer and the patterned mask. The selective etching selectively trims the isolated areas of the mask with respect to the dense areas of the mask. The dielectric layer is etched using the thus trimmed mask. The mask is removed.Type: GrantFiled: October 19, 2010Date of Patent: October 21, 2014Assignee: Lam Research CorporationInventors: Supriya Goyal, Dongho Heo, Jisoo Kim, S. M. Reza Sadjadi
-
Patent number: 8866202Abstract: A method for reducing capacitances between semiconductor devices is provided. A plurality of contact structures is formed in a dielectric layer. A mask is formed to cover the contact structures wherein the mask has mask features for exposing parts of the dielectric layer wherein the mask features have widths. The widths of the mask features are shrunk with a sidewall deposition. Gaps are etched into the dielectric layer through the sidewall deposition. The gaps are closed to form pockets in the gaps.Type: GrantFiled: April 26, 2012Date of Patent: October 21, 2014Assignee: Lam Research CorporationInventors: S. M. Reza Sadjadi, Zhi-Song Huang
-
Patent number: 8614149Abstract: A method for forming a feature in an etch layer is provided. A photoresist layer is formed over the etch layer. The photoresist layer is patterned to form photoresist features with photoresist sidewalls. A control layer is formed over the photoresist layer and bottoms of the photoresist features. A conformal layer is deposited over the sidewalls of the photoresist features and control layer to reduce the critical dimensions of the photoresist features. Openings in the control layer are opened with a control layer breakthrough chemistry. Features are etched into the etch layer with an etch chemistry, which is different from the control layer break through chemistry, wherein the control layer is more etch resistant to the etch with the etch chemistry than the conformal layer.Type: GrantFiled: August 15, 2012Date of Patent: December 24, 2013Assignee: Lam Research CorporationInventors: Sangheon Lee, Dae-Han Choi, Jisoo Kim, Peter Cirigliano, Zhisong Huang, Robert Charatan, S. M. Reza Sadjadi
-
Patent number: 8592318Abstract: A method for etching an etch layer disposed over a substrate and below an antireflective coating (ARC) layer and a patterned organic mask with mask features is provided. The substrate is placed in a process chamber. The ARC layer is opened. An oxide spacer deposition layer is formed. The oxide spacer deposition layer on the organic mask is partially removed, where at least the top portion of the oxide spacer deposition layer is removed. The organic mask and the ARC layer are removed by etching. The etch layer is etched through the sidewalls of the oxide spacer deposition layer. The substrate is removed from the process chamber.Type: GrantFiled: November 7, 2008Date of Patent: November 26, 2013Assignee: Lam Research CorporationInventors: Jisoo Kim, Conan Chiang, Jun Shinagawa, S. M. Reza Sadjadi
-
Publication number: 20130288483Abstract: A dynamically tunable process kit, a processing chamber having a dynamically tunable process kit, and a method for processing a substrate using a dynamically tunable process kit are provided. The dynamically tunable process kit allows one or both of the electrical and thermal state of the process kit to be changed without changing the phyisical construction of the process kit, thereby allowing plasma properties, and hence processing results, to be easily changed without replacing the process kit. The processing chamber having a dynamically tunable process kit includes a chamber body that includes a portion of a conductive side wall configured to be electrically controlled, and a process kit. The processing chamber includes a first control system operable to control one or both of an electrical and thermal state of the process kit and a second control system operable to control an electrical state of the portion of the side wall.Type: ApplicationFiled: February 13, 2013Publication date: October 31, 2013Inventors: S.M. Reza Sadjadi, Dmitry Lubomirsky, Hamid Noorbakhsh, John Zheng Ye, David H. Quach, Sean S. Kang
-
Patent number: 8361564Abstract: A method for implanting a dopant in a substrate is provided. A patterned photoresist mask is formed over the substrate, wherein the patterned photoresist mask has patterned photoresist mask features. A protective layer is deposited on the patterned photoresist mask by performing a cyclical deposition, wherein each cycle, comprises a depositing phase for depositing a deposition layer over surfaces of the patterned mask of photoresist material and a profile shaping phase for providing vertical sidewalls. A dopant is implanted into the substrate using an ion beam. The protective layer and photoresist mask are removed.Type: GrantFiled: December 19, 2008Date of Patent: January 29, 2013Assignee: Lam Research CorporationInventors: Andrew R. Romano, S. M. Reza Sadjadi
-
Patent number: 8357434Abstract: A method for depositing a conformal film on a substrate in a plasma processing chamber of a plasma processing system, the substrate being disposed on a chuck, the chuck being coupled to a cooling apparatus, is disclosed. The method includes flowing a first gas mixture into the plasma processing chamber at a first pressure, wherein the first gas mixture includes at least carbon, and wherein the first gas mixture has a condensation temperature. The method also includes cooling the chuck below the condensation temperature using the cooling apparatus thereby allowing at least some of the first gas mixture to condense on a surface of the substrate. The method further includes venting the first gas mixture from the processing chamber; flowing a second gas mixture into the plasma processing chamber, the second gas mixture being different in composition from the first gas mixture; and striking a plasma to form the conformal film.Type: GrantFiled: December 13, 2005Date of Patent: January 22, 2013Assignee: Lam Research CorporationInventors: Dae-han Choi, Jisoo Kim, Eric Hudson, Sangheon Lee, Conan Chiang, S. M. Reza Sadjadi
-
Publication number: 20130000846Abstract: An apparatus for etching an etch layer formed on a substrate is provided. A first photoresist (PR) mask with first mask features is provided on the etch layer. The apparatus performs a process for providing a protective coating on the first PR mask. The process includes at least one cycle. Each cycle includes (a) a deposition phase for depositing a deposition layer over the surface of the first mask features using a deposition gas, and (b) a profile shaping phase for shaping the profile of the deposition layer using a profile shaping gas. A liquid PR material is applied over the first PR mask having the protective coating. The PR material is patterned into a second mask features, where the first and second mask features form a second PR mask. The etch layer is etched though the second PR mask.Type: ApplicationFiled: September 10, 2012Publication date: January 3, 2013Applicant: LAM RESEARCH CORPORATIONInventors: Andrew R. ROMANO, S.M. Reza SADJADI
-
Patent number: 8343876Abstract: A plasma chamber with a plasma confinement zone with an electrode is provided. A gas distribution system for providing a first gas and a second gas is connected to the plasma chamber, wherein the gas distribution system can substantially replace one gas in the plasma zone with the other gas within a period of less than 1 s. A first frequency tuned RF power source for providing power to the electrode in a first frequency range is electrically connected to the at least one electrode wherein the first frequency tuned RF power source is able to minimize a reflected RF power. A second frequency tuned RF power source for providing power to the plasma chamber in a second frequency range outside of the first frequency range wherein the second frequency tuned RF power source is able to minimize a reflected RF power.Type: GrantFiled: July 22, 2011Date of Patent: January 1, 2013Assignee: Lam Research CorporationInventors: S. M. Reza Sadjadi, Zhisong Huang, Jose Tong Sam, Eric H. Lenz, Rajinder Dhindsa
-
Publication number: 20120328781Abstract: A method for implanting a dopant in a substrate is provided. A patterned photoresist mask is formed over the substrate, wherein the patterned photoresist mask has patterned photoresist mask features. A protective layer is deposited on the patterned photoresist mask by performing a cyclical deposition, wherein each cycle, comprises a depositing phase for depositing a deposition layer over surfaces of the patterned mask of photoresist material and a profile shaping phase for providing vertical sidewalls. A dopant is implanted into the substrate using an ion beam. The protective layer and photoresist mask are removed.Type: ApplicationFiled: December 19, 2008Publication date: December 27, 2012Applicant: Lam Research CorporationInventors: Andrew R. Romano, S. M. Reza Sadjadi
-
Publication number: 20120309201Abstract: A method for forming a feature in an etch layer is provided. A photoresist layer is formed over the etch layer. The photoresist layer is patterned to form photoresist features with photoresist sidewalls. A control layer is formed over the photoresist layer and bottoms of the photoresist features. A conformal layer is deposited over the sidewalls of the photoresist features and control layer to reduce the critical dimensions of the photoresist features. Openings in the control layer are opened with a control layer breakthrough chemistry. Features are etched into the etch layer with an etch chemistry, which is different from the control layer break through chemistry, wherein the control layer is more etch resistant to the etch with the etch chemistry than the conformal layer.Type: ApplicationFiled: August 15, 2012Publication date: December 6, 2012Applicant: LAM RESEARCH CORPORATIONInventors: Sangheon Lee, Dae-Han Choi, Jisoo Kim, Peter Cirigliano, Zhisong Huang, Robert Charatan, S.M. Reza Sadjadi