Patents by Inventor Prithu Sharma

Prithu Sharma 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: 11119616
    Abstract: Trace transfer techniques can be used to couple touch electrodes to touch sensing circuitry with a reduced border region around a touch sensor panel. Touch electrodes on a first side of the substrate can be routed to a bond pad region on the second side of the substrate via a trace transfer technique to enable single-sided bonding of a double-sided touch sensor panel. Trace transfer techniques can also be used to couple conductive traces on a first side of the substrate to a flex circuit oriented perpendicular to or otherwise not parallel to the first side of the substrate. Orienting the flex circuit in this way can allow the flex circuit to connect to touch circuitry with reduced bending as compared with the amount of bending of the flex circuit when oriented substantially parallel to the substrate.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: September 14, 2021
    Assignee: Apple Inc.
    Inventors: Helia Rahmani, Prithu Sharma, David Sheldon Schultz
  • Publication number: 20200142540
    Abstract: Trace transfer techniques can be used to couple touch electrodes to touch sensing circuitry with a reduced border region around a touch sensor panel. Touch electrodes on a first side of the substrate can be routed to a bond pad region on the second side of the substrate via a trace transfer technique to enable single-sided bonding of a double-sided touch sensor panel. Trace transfer techniques can also be used to couple conductive traces on a first side of the substrate to a flex circuit oriented perpendicular to or otherwise not parallel to the first side of the substrate. Orienting the flex circuit in this way can allow the flex circuit to connect to touch circuitry with reduced bending as compared with the amount of bending of the flex circuit when oriented substantially parallel to the substrate.
    Type: Application
    Filed: October 23, 2019
    Publication date: May 7, 2020
    Inventors: Helia RAHMANI, Prithu SHARMA, David Sheldon SCHULTZ
  • Patent number: 10521049
    Abstract: The disclosure relates to a touch screen including a first electrode layer, a second electrode layer, and a third electrode layer. The touch screen can include shield-sensor vias connecting the first electrode layer and the second electrode layer and shield-shield vias connecting the first electrode layer and the third electrode layer, for example. The shield-sensor vias can be placed in a bond pad region of the touch screen, which can further include connections between one or more routing traces connected to one or more touch electrodes and touch or other circuitry further included in the electronic device. The shield-shield vias can be placed in an outer region located around an inner region of the touch screen. In some examples, one or more routing traces can include diverted portions to maintain a threshold distance between the routing traces and the one or more shield-shield vias.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: December 31, 2019
    Assignee: Apple Inc.
    Inventors: David Sheldon Schultz, Prithu Sharma, Zachary M. Gaubert
  • Patent number: 10300557
    Abstract: A hybrid laser modulation and acid etch process for the creation of a patterned substrate. According to some embodiments, a hole is formed in a glass substrate by first modulating a portion of the substrate in the desired shape. A mask is coated on the glass substrate and is patterned to expose the modulated portion. The glass substrate is then acid etched to remove the modulated portion. Once the modulated portion has been etched, the desired shape may be removed from the glass substrate and the mask may be stripped.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: May 28, 2019
    Assignee: Apple Inc.
    Inventors: Nathan K. Gupta, Simon R. Lancaster-Larocque, Prithu Sharma, Weibo Cheng, Abhijit A. Kangude, Bryan W. Posner, Sudirukkuge T. Jinasundera, Karan Bir
  • Publication number: 20190102011
    Abstract: The disclosure relates to a touch screen including a first electrode layer, a second electrode layer, and a third electrode layer. The touch screen can include shield-sensor vias connecting the first electrode layer and the second electrode layer and shield-shield vias connecting the first electrode layer and the third electrode layer, for example. The shield-sensor vias can be placed in a bond pad region of the touch screen, which can further include connections between one or more routing traces connected to one or more touch electrodes and touch or other circuitry further included in the electronic device. The shield-shield vias can be placed in an outer region located around an inner region of the touch screen. In some examples, one or more routing traces can include diverted portions to maintain a threshold distance between the routing traces and the one or more shield-shield vias.
    Type: Application
    Filed: September 27, 2018
    Publication date: April 4, 2019
    Inventors: David Sheldon SCHULTZ, Prithu SHARMA, Zachary M. GAUBERT
  • Patent number: 10199235
    Abstract: Methods and techniques for fabricating metal interconnects, lines, or vias by subtractive etching and liner deposition methods are provided. Methods involve depositing a blanket copper layer, removing regions of the blanket copper layer to form a pattern, treating the patterned metal, depositing a copper-dielectric interface material such that the copper-dielectric interface material adheres only to the patterned copper, depositing a dielectric barrier layer on the substrate, and depositing a dielectric bulk layer on the substrate.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: February 5, 2019
    Assignee: Lam Research Corporation
    Inventors: Hui-Jung Wu, Thomas Joseph Knisley, Nagraj Shankar, Meihua Shen, John Hoang, Prithu Sharma
  • Publication number: 20180211846
    Abstract: Methods and techniques for fabricating metal interconnects, lines, or vias by subtractive etching and liner deposition methods are provided. Methods involve depositing a blanket copper layer, removing regions of the blanket copper layer to form a pattern, treating the patterned metal, depositing a copper-dielectric interface material such that the copper-dielectric interface material adheres only to the patterned copper, depositing a dielectric barrier layer on the substrate, and depositing a dielectric bulk layer on the substrate.
    Type: Application
    Filed: January 18, 2018
    Publication date: July 26, 2018
    Inventors: Hui-Jung Wu, Thomas Joseph Knisley, Nagraj Shankar, Meihua Shen, John Hoang, Prithu Sharma
  • Publication number: 20180085857
    Abstract: A hybrid laser modulation and acid etch process for the creation of a patterned substrate. According to some embodiments, a hole is formed in a glass substrate by first modulating a portion of the substrate in the desired shape. A mask is coated on the glass substrate and is patterned to expose the modulated portion. The glass substrate is then acid etched to remove the modulated portion. Once the modulated portion has been etched, the desired shape may be removed from the glass substrate and the mask may be stripped.
    Type: Application
    Filed: September 22, 2017
    Publication date: March 29, 2018
    Applicant: Apple Inc.
    Inventors: Nathan K. Gupta, Simon R. Lancaster-Larocque, Prithu Sharma, Weibo Cheng, Abhijit A. Kangude, Bryan W. Posner, Sudirukkuge T. Jinasundera, Karan Bir
  • Patent number: 9899234
    Abstract: Methods and techniques for fabricating metal interconnects, lines, or vias by subtractive etching and liner deposition methods are provided. Methods involve depositing a blanket copper layer, removing regions of the blanket copper layer to form a pattern, treating the patterned metal, depositing a copper-dielectric interface material such that the copper-dielectric interface material adheres only to the patterned copper, depositing a dielectric barrier layer on the substrate, and depositing a dielectric bulk layer on the substrate.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: February 20, 2018
    Assignee: Lam Research Corporation
    Inventors: Hui-Jung Wu, Thomas Joseph Knisley, Nagraj Shankar, Meihua Shen, John Hoang, Prithu Sharma
  • Patent number: 9832868
    Abstract: An electronic device may have layers of glass for forming components such as a display. A display cover glass layer may overlap an array of pixels. A touch sensor may be formed under the display cover glass layer. Conductive structures such as transparent conductive electrodes or other conductive layers of material may be formed on the outer surface of the display cover glass layer. The electrodes on the outer surface of the display cover glass layer may be coupled to metal contacts and other circuitry on the inner surface of the display cover glass layer using conductive vias. Vias may be provided with barrier layers, opaque coatings, tapers, and other structures and may be formed using techniques that enhance compatibility with chemical strengthening processes.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: November 28, 2017
    Assignee: Apple Inc.
    Inventors: Derek W. Wright, James E. Pedder, Soyoung Kim, Stephen R. McClure, Elmar Gehlen, Sudirukkuge T. Jinasundera, Tingjun Xu, Michael Vosgueritchian, Xiaonan Wen, Wei Lin, Prithu Sharma
  • Patent number: 9570320
    Abstract: A method of opening a barrier film below copper structures in a stack is provided. A pulsed gas is provided into a plasma processing chamber, wherein the providing the pulsed gas comprises providing a pulsed H2 containing gas and providing a pulsed halogen containing gas, wherein the pulsed H2 containing gas and the pulsed halogen containing gas are pulsed out of phase, and wherein the pulsed H2 containing gas has an H2 high flow period and the pulsed halogen containing gas has a halogen containing gas high flow period, wherein the H2 high flow period is greater than the halogen containing gas high flow period. The pulsed gas is formed into a plasma. The copper structures and the barrier film are exposed to the plasma, which etches the barrier film. In another embodiment, a wet and dry cyclical process may be used.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: February 14, 2017
    Assignee: Lam Research Corporation
    Inventors: Meihua Shen, Ji Zhu, Shuogang Huang, Baosuo Zhou, John Hoang, Prithu Sharma, Thorsten Lill
  • Patent number: 9490330
    Abstract: Initiation conditions and strain techniques are described that enable forming high quality GaAsP semiconductor material on an SiGe semiconductor material with low threading defect density. Suitable initiation conditions include exposing the SiGe semiconductor material to a gas comprising arsenic. A tensilely-strained region may be formed in the semiconductor structure between regions of GaAsP semiconductor material and SiGe semiconductor material.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: November 8, 2016
    Assignee: Massachusetts Institute of Technology
    Inventors: Eugene A. Fitzgerald, Prithu Sharma, Timothy Milakovich
  • Patent number: 9391267
    Abstract: A method for etching a stack with at least one metal layer in one or more cycles is provided. An initiation step is preformed, transforming part of the at least one metal layer into metal oxide, metal halide, or lattice damaged metallic sites. A reactive step is performed providing one or more cycles, where each cycle comprises providing an organic solvent vapor to form a solvated metal, metal halide, or metal oxide state and providing an organic ligand solvent to form volatile organometallic compounds.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: July 12, 2016
    Assignee: Lam Research Corporation
    Inventors: Meihua Shen, Harmeet Singh, Samantha S. H. Tan, Jeffrey Marks, Thorsten Lill, Richard P. Janek, Wenbing Yang, Prithu Sharma
  • Publication number: 20160104630
    Abstract: A method of opening a barrier film below copper structures in a stack is provided. A pulsed gas is provided into a plasma processing chamber, wherein the providing the pulsed gas comprises providing a pulsed H2 containing gas and providing a pulsed halogen containing gas, wherein the pulsed H2 containing gas and the pulsed halogen containing gas are pulsed out of phase, and wherein the pulsed H2 containing gas has an H2 high flow period and the pulsed halogen containing gas has a halogen containing gas high flow period, wherein the H2 high flow period is greater than the halogen containing gas high flow period. The pulsed gas is formed into a plasma. The copper structures and the barrier film are exposed to the plasma, which etches the barrier film. In another embodiment, a wet and dry cyclical process may be used.
    Type: Application
    Filed: December 22, 2014
    Publication date: April 14, 2016
    Inventors: Meihua SHEN, Ji ZHU, Shuogang HUANG, Baosuo ZHOU, John HOANG, Prithu SHARMA, Thorsten LILL
  • Publication number: 20150380272
    Abstract: Methods and techniques for fabricating metal interconnects, lines, or vias by subtractive etching and liner deposition methods are provided. Methods involve depositing a blanket copper layer, removing regions of the blanket copper layer to form a pattern, treating the patterned metal, depositing a copper-dielectric interface material such that the copper-dielectric interface material adheres only to the patterned copper, depositing a dielectric barrier layer on the substrate, and depositing a dielectric bulk layer on the substrate.
    Type: Application
    Filed: June 30, 2014
    Publication date: December 31, 2015
    Inventors: Hui-Jung Wu, Thomas Joseph Knisley, Nagraj Shankar, Meihua Shen, John Hoang, Prithu Sharma
  • Publication number: 20150340603
    Abstract: A method for etching a stack with at least one metal layer in one or more cycles is provided. An initiation step is preformed, transforming part of the at least one metal layer into metal oxide, metal halide, or lattice damaged metallic sites. A reactive step is performed providing one or more cycles, where each cycle comprises providing an organic solvent vapor to form a solvated metal, metal halide, or metal oxide state and providing an organic ligand solvent to form volatile organometallic compounds.
    Type: Application
    Filed: August 4, 2015
    Publication date: November 26, 2015
    Inventors: Meihua SHEN, Harmeet SINGH, Samantha S.H. TAN, Jeffrey MARKS, Thorsten LILL, Richard P. JANEK, Wenbing YANG, Prithu SHARMA
  • Publication number: 20150280114
    Abstract: A method for etching a stack with at least one metal layer in one or more cycles is provided. An initiation step is preformed, transforming part of the at least one metal layer into metal oxide, metal halide, or lattice damaged metallic sites. A reactive step is performed providing one or more cycles, where each cycle comprises providing an organic solvent vapor to form a solvated metal, metal halide, or metal oxide state and providing an organic ligand solvent to form volatile organometallic compounds. A desorption of the volatile organometallic compounds is performed.
    Type: Application
    Filed: July 8, 2014
    Publication date: October 1, 2015
    Inventors: Meihua SHEN, Harmeet SINGH, Samantha S.H. TAN, Jeffrey MARKS, Thorsten LILL, Richard P. JANEK, Wenbing YANG, Prithu SHARMA
  • Publication number: 20150255549
    Abstract: Initiation conditions and strain techniques are described that enable forming high quality GaAsP semiconductor material on an SiGe semiconductor material with low threading defect density. Suitable initiation conditions include exposing the SiGe semiconductor material to a gas comprising arsenic. A tensilely-strained region may be formed in the semiconductor structure between regions of GaAsP semiconductor material and SiGe semiconductor material.
    Type: Application
    Filed: October 4, 2013
    Publication date: September 10, 2015
    Applicant: Massachusetts Institute of Technology
    Inventors: Eugene A. Fitzgerald, Prithu Sharma, Timothy Milakovich
  • Patent number: 9130158
    Abstract: A method for etching a stack with at least one metal layer in one or more cycles is provided. An initiation step is preformed, transforming part of the at least one metal layer into metal oxide, metal halide, or lattice damaged metallic sites. A reactive step is performed providing one or more cycles, where each cycle comprises providing an organic solvent vapor to form a solvated metal, metal halide, or metal oxide state and providing an organic ligand solvent to form volatile organometallic compounds. A desorption of the volatile organometallic compounds is performed.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: September 8, 2015
    Assignee: Lam Research Corporation
    Inventors: Meihua Shen, Harmeet Singh, Samantha S. H. Tan, Jeffrey Marks, Thorsten Lill, Richard P. Janek, Wenbing Yang, Prithu Sharma