Patents by Inventor PULKIT AGARWAL

PULKIT AGARWAL 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).

  • Publication number: 20190153600
    Abstract: A substrate processing system configured to perform a deposition process on a substrate includes a substrate support including a plurality of zones and a plurality of resistive heaters arranged throughout the plurality of zones. The plurality of resistive heaters includes separately-controllable resistive heaters arranged in respective ones of the plurality of zones. A controller is configured to, during the deposition process, control the plurality of resistive heaters to selectively adjust temperatures within the plurality of zones.
    Type: Application
    Filed: November 15, 2018
    Publication date: May 23, 2019
    Inventors: Michael Philip Roberts, Ramesh Chandrasekharan, Pulkit Agarwal, Aaron Bingham, Ashish Saurabh, Ravi Kumar, Jennifer Leigh Petraglia
  • Patent number: 10269559
    Abstract: Methods and apparatuses for depositing material into high aspect ratio features, features in a multi-laminate stack, features having positively sloped sidewalls, features having negatively sloped sidewalls, features having a re-entrant profile, and/or features having sidewall topography are described herein. Methods involve depositing a first amount of material, such as a dielectric (e.g., silicon oxide), into a feature and forming a sacrificial helmet on the field surface of the substrate, etching some of the first amount of the material to open the feature opening and/or smoothen sidewalls of the feature, and depositing a second amount of material to fill the feature. The sacrificial helmet may be the same as or different material from the first amount of material deposited into the feature.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: April 23, 2019
    Assignee: Lam Research Corporation
    Inventors: Joseph Abel, Pulkit Agarwal, Richard Phillips, Purushottam Kumar, Adrien LaVoie
  • Publication number: 20190080903
    Abstract: Methods and apparatuses for depositing material into high aspect ratio features, features in a multi-laminate stack, features having positively sloped sidewalls, features having negatively sloped sidewalls, features having a re-entrant profile, and/or features having sidewall topography are described herein. Methods involve depositing a first amount of material, such as a dielectric (e.g., silicon oxide), into a feature and forming a sacrificial helmet on the field surface of the substrate, etching some of the first amount of the material to open the feature opening and/or smoothen sidewalls of the feature, and depositing a second amount of material to fill the feature. The sacrificial helmet may be the same as or different material from the first amount of material deposited into the feature.
    Type: Application
    Filed: September 13, 2017
    Publication date: March 14, 2019
    Inventors: Joseph Abel, Pulkit Agarwal, Richard Phillips, Purushottam Kumar, Adrien LaVoie
  • Publication number: 20180374697
    Abstract: Certain embodiments herein relate to methods of increasing a reaction chamber batch size. A portion of a batch of wafers is processed within the chamber. The processing results in at least some off-target deposition of material on interior surfaces of the reaction chamber. A mid-batch chamber processing is conducted to stabilize the off-target deposition materials accumulated on the chamber interior surfaces. Another portion of the batch of wafers is processed within the chamber. In various embodiments, processing of the chamber (e.g., mid-batch) and subsequent portion of the batch of wafers is repeated until processing of all wafers is complete. Batch size refers to the number of wafers that may be processed in the reaction chamber between chamber clean cycles. Chamber interior surfaces are seasoned prior to batch processing. Seasoning of the chamber interior surfaces involves applying a coating of the same material that may be used for deposition on the wafers during processing of the same.
    Type: Application
    Filed: October 31, 2017
    Publication date: December 27, 2018
    Inventors: Pulkit Agarwal, Purushottam Kumar, Richard Phillips, Adrien LaVoie
  • Publication number: 20180312973
    Abstract: Methods and apparatuses for removing photoresist patterning scum from patterning mandrel structures without damaging other features or structures on a semiconductor substrate are desirable for patterning precision. Methods involve cleaning carbon-containing features on a semiconductor substrate by an atomic layer cleaning (ALC) process to descum the carbon-containing features without substantially modifying feature critical dimensions. The ALC process involves exposing the carbon-containing features to an oxidant or reductant in absence of a plasma, or other energetic activation, to modify scum on the surface of the carbon-containing features. The modified scum on the surface of the carbon-containing features is then exposed to an inert gas along with a plasma ignited at a pressure between 0.1 Torr and 10 Torr and a power of less than 200 W to remove the modified scum from the surface of the carbon-containing features.
    Type: Application
    Filed: July 19, 2017
    Publication date: November 1, 2018
    Inventors: Pulkit Agarwal, Purushottam Kumar, Adrien LaVoie
  • Publication number: 20180308695
    Abstract: Methods and apparatuses for patterning carbon-containing material over a layer to be etched are provided herein. Methods involve trimming carbon-containing material by atomic layer etching including exposing the carbon-containing material to an oxygen-containing gas without a plasma to modify a surface of the carbon-containing material and exposing the carbon-containing material to an inert gas and igniting a plasma to remove the modified surface of the carbon-containing material. Methods may be used for multiple patterning techniques such as double and quad patterning. Methods also include depositing a conformal film over a carbon-containing material patterned using atomic layer etching without breaking vacuum. The oxygen-containing gas may be one containing any one or more of oxygen, ozone, water vapor, nitrous oxide, carbon monoxide, formic acid vapor and/or carbon dioxide.
    Type: Application
    Filed: April 17, 2018
    Publication date: October 25, 2018
    Inventors: Adrien LaVoie, Pulkit Agarwal, Purushottam Kumar
  • Publication number: 20180171473
    Abstract: A semiconductor system includes a chamber, a pedestal disposed in the chamber, and a focus ring that surrounds the pedestal. The pedestal has a center region for supporting a central region of a substrate, e.g., a wafer. The focus ring is configured to surround the center region of the pedestal. The focus ring has an annular support region that extends between an inner portion of the focus ring and an outer portion of the focus ring. The annular support region, which is disposed at an angle relative to a horizontal line, provides a knife-edge contact for the substrate when present over the center region of the pedestal and the annular support region of the focus ring. The knife-edge contact between the edge of the substrate and the annular support region of the focus ring disables chemical access to the substrate backside and thereby reduces unwanted backside deposition.
    Type: Application
    Filed: December 20, 2016
    Publication date: June 21, 2018
    Inventors: Pulkit Agarwal, Ishtak Karim, Purushottam Kumar, Adrien LaVoie, Sung Je Kim, Patrick Breiling
  • Patent number: 9997371
    Abstract: Methods and apparatuses for patterning carbon-containing material over a layer to be etched are provided herein. Methods involve trimming carbon-containing material by atomic layer etching including exposing the carbon-containing material to an oxygen-containing gas without a plasma to modify a surface of the carbon-containing material and exposing the carbon-containing material to an inert gas and igniting a plasma to remove the modified surface of the carbon-containing material. Methods may be used for multiple patterning techniques such as double and quad patterning. Methods also include depositing a conformal film over a carbon-containing material patterned using atomic layer etching without breaking vacuum.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: June 12, 2018
    Assignee: Lam Research Corporation
    Inventors: Pulkit Agarwal, Purushottam Kumar, Adrien LaVoie
  • Patent number: 9947578
    Abstract: Methods for forming metal contacts having tungsten liner layers are provided herein. In some embodiments, a method of processing a substrate includes: exposing a substrate, within a first substrate process chamber, to a plasma formed from a first gas comprising a metal organic tungsten precursor gas or a fluorine-free tungsten halide precursor to deposit a tungsten liner layer, wherein the tungsten liner layer is deposited atop a dielectric layer and within a feature formed in a first surface of the dielectric layer of a substrate; transferring the substrate to a second substrate process chamber without exposing the substrate to atmosphere; and exposing the substrate to a second gas comprising a tungsten fluoride precursor to deposit a tungsten fill layer atop the tungsten liner layer.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: April 17, 2018
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Yu Lei, Vikash Banthia, Kai Wu, Xinyu Fu, Yi Xu, Kazuya Daito, Feiyue Ma, Pulkit Agarwal, Chi-Chou Lin, Dien-Yeh Wu, Guoqiang Jian, Wei V. Tang, Jonathan Bakke, Mei Chang, Sundar Ramamurthy
  • Patent number: 9925639
    Abstract: Disclosed herein are systems and methods for cleaning a ceramic article using a stream of solid carbon dioxide (CO2) particles. A method includes flowing liquid CO2 into a spray nozzle, and directing a first stream of solid CO2 particles from the spray nozzle toward a ceramic article for a first time duration to clean the ceramic article. The liquid CO2 is converted into the first stream of solid CO2 particles upon exiting the spray nozzle. The first stream of solid CO2 particles causes a layer of solid CO2 to be formed on the ceramic article. After the layer of solid CO2 has sublimated, a second stream of solid CO2 particles is directed from the spray nozzle toward the ceramic article for at least one of the first time duration or a second time duration to further clean the ceramic article.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: March 27, 2018
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Song-Moon Suh, Yuanhong Guo, Guangchi Xuan, Pulkit Agarwal
  • Publication number: 20170148670
    Abstract: Methods for forming metal contacts having tungsten liner layers are provided herein. In some embodiments, a method of processing a substrate includes: exposing a substrate, within a first substrate process chamber, to a plasma formed from a first gas comprising a metal organic tungsten precursor gas or a fluorine-free tungsten halide precursor to deposit a tungsten liner layer, wherein the tungsten liner layer is deposited atop a dielectric layer and within a feature formed in a first surface of the dielectric layer of a substrate; transferring the substrate to a second substrate process chamber without exposing the substrate to atmosphere; and exposing the substrate to a second gas comprising a tungsten fluoride precursor to deposit a tungsten fill layer atop the tungsten liner layer.
    Type: Application
    Filed: November 22, 2016
    Publication date: May 25, 2017
    Inventors: YU LEI, VIKASH BANTHIA, KAI WU, XINYU FU, YI XU, KAZUYA DAITO, FEIYUE MA, PULKIT AGARWAL, CHI-CHOU LIN, DIEN-YEH WU, GUOQIANG JIAN, WEI V. TANG, JONATHAN BAKKE, MEI CHANG, SUNDAR RAMAMURTHY
  • Patent number: 9536329
    Abstract: A computer implemented method and apparatus for acquiring sentiment analysis information based on user reactions to displayable content. The method comprises receiving reaction data of at least one individual user viewing portions of displayable content, wherein the reaction data of each user includes indications representative of at least one of a time-varying emotional state of the user and a time-varying level of interest of the user captured during viewing of the displayable content; and performing sentiment analysis on the reaction data by at least one of: categorizing portions of the displayable content based on one of the reaction of one user or aggregated reactions of a plurality of users, and identifying at least one portion of the displayable content having one of a more favorable and a less favorable reaction by the at least one user, by comparison to one of a baseline and reactions to other portions of the displayable content.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: January 3, 2017
    Assignee: ADOBE SYSTEMS INCORPORATED
    Inventors: Neha Saxena, Pulkit Agarwal, Raman Gupta
  • Publication number: 20160322239
    Abstract: Embodiments of methods and apparatus for cleaning contaminants from a substrate are disclosed herein. In some embodiments, a substrate cleaning apparatus includes: a substrate support to support a substrate along an edge of the substrate, wherein the substrate further includes a first side and an opposing second side having contaminants disposed on the second side; a showerhead disposed a first distance of about 1.5 mm to about 4.4 mm opposite the substrate support and facing the first side of the substrate; and one or more nozzles disposed a second distance of about 1 inch to about 2 inches beneath the substrate support to discharge a mixture of solid and gaseous carbon dioxide toward the contaminants on the second side of the substrate, and wherein the one or more nozzles have an angle of about 20 to about 40 degrees.
    Type: Application
    Filed: June 24, 2015
    Publication date: November 3, 2016
    Inventors: Pulkit AGARWAL, Bonnie T. CHIA, Song-Moon SUH, Cheng-Hsiung TSAI, Dhritiman Subha KASHYAP, Xiaoxiong YUAN, Eric RIESKE
  • Patent number: 9425076
    Abstract: Embodiments of apparatus for supporting a substrate are disclosed herein. In some embodiments, an apparatus for supporting a substrate includes a support member; and a plurality of substrate contact elements protruding from the support member, wherein each of the plurality of substrate contact elements includes: a first contact surface to support a substrate when placed thereon; and a second contact surface extending from the first contact surface, wherein the second contact surface is adjacent a periphery of the substrate to prevent radial movement of the substrate, wherein the first contact surface is at a first angle with respect to the support member and the second contact surface is at a second angle with respect to the support member, and wherein the first angle is between about 3 degrees and 5 degrees.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: August 23, 2016
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Pulkit Agarwal, Daniel Greenberg, Song-Moon Suh, Jeffrey Brodine, Steven V. Sansoni, Glen Mori
  • Publication number: 20160016286
    Abstract: Disclosed herein are systems and methods for cleaning a ceramic article using a stream of solid carbon dioxide (CO2) particles. A method includes flowing liquid CO2 into a spray nozzle, and directing a first stream of solid CO2 particles from the spray nozzle toward a ceramic article for a first time duration to clean the ceramic article. The liquid CO2 is converted into the first stream of solid CO2 particles upon exiting the spray nozzle. The first stream of solid CO2 particles causes a layer of solid CO2 to be formed on the ceramic article. After the layer of solid CO2 has sublimated, a second stream of solid CO2 particles is directed from the spray nozzle toward the ceramic article for at least one of the first time duration or a second time duration to further clean the ceramic article.
    Type: Application
    Filed: July 18, 2014
    Publication date: January 21, 2016
    Inventors: Song-Moon Suh, Yuanhong Guo, Guangchi Xuan, Pulkit Agarwal
  • Publication number: 20160005638
    Abstract: Embodiments of apparatus for supporting a substrate are disclosed herein. In some embodiments, an apparatus for supporting a substrate includes a support member; and a plurality of substrate contact elements protruding from the support member, wherein each of the plurality of substrate contact elements includes: a first contact surface to support a substrate when placed thereon; and a second contact surface extending from the first contact surface, wherein the second contact surface is adjacent a periphery of the substrate to prevent radial movement of the substrate, wherein the first contact surface is at a first angle with respect to the support member and the second contact surface is at a second angle with respect to the support member, and wherein the first angle is between about 3 degrees and 5 degrees.
    Type: Application
    Filed: September 3, 2014
    Publication date: January 7, 2016
    Inventors: PULKIT AGARWAL, DANIEL GREENBERG, SONG-MOON SUH, JEFFREY BRODINE, STEVEN V. SANSONI, GLEN MORI
  • Publication number: 20150347903
    Abstract: A computer implemented method and apparatus for acquiring sentiment analysis information based on user reactions to displayable content. The method comprises receiving reaction data of at least one individual user viewing portions of displayable content, wherein the reaction data of each user includes indications representative of at least one of a time-varying emotional state of the user and a time-varying level of interest of the user captured during viewing of the displayable content; and performing sentiment analysis on the reaction data by at least one of: categorizing portions of the displayable content based on one of the reaction of one user or aggregated reactions of a plurality of users, and identifying at least one portion of the displayable content having one of a more favorable and a less favorable reaction by the at least one user, by comparison to one of a baseline and reactions to other portions of the displayable content.
    Type: Application
    Filed: May 30, 2014
    Publication date: December 3, 2015
    Applicant: ADOBE SYSTEMS INCORPORATED
    Inventors: Neha Saxena, Pulkit Agarwal, Raman Gupta
  • Publication number: 20150170954
    Abstract: Embodiments of apparatus for supporting a substrate are disclosed herein. In some embodiments, an apparatus for supporting a substrate includes: a support surface; and a plurality of substrate contact elements protruding from the support surface, wherein the plurality of substrate contact elements are formed of a material having a hardness less than or equal to a hardness of silicon, having a low adhesion, having a coefficient of static friction large enough to prevent sliding, having a surface roughness less than or equal to 10 Ra, and that is electrically conductive.
    Type: Application
    Filed: November 26, 2014
    Publication date: June 18, 2015
    Inventors: PULKIT AGARWAL, SONG-MOON SUH, GLEN MORI, STEVEN V. SANSONI