Patents by Inventor Chandra Deshpandey

Chandra Deshpandey 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: 7544398
    Abstract: The invention relates to methods for producing doped thin layers on substrates comprising the steps of depositing a dopant precursor on the substrate via an atomic layer deposition technique; and exposing the deposited dopant precursor to radicals. The methods can further comprise depositing a compound adjacent the dopant metal via an atomic layer deposition technique; and exposing the deposited compound to radicals, thereby providing a host. The invention relates to articles comprising approximately atomically thin layers of metals or metal oxides doped with at least one different metal or metal oxide. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
    Type: Grant
    Filed: April 26, 2006
    Date of Patent: June 9, 2009
    Assignee: The Regents of the Univesity of California
    Inventors: Jane P. Chang, Trinh Tu Van, Tony Chiang, Chandra Deshpandey, Karl Lesser
  • Patent number: 6821562
    Abstract: In accordance with the present invention, an insulating sealing structure useful in physical vapor deposition apparatus is provided. The insulating sealing structure is capable of functioning under high vacuum and high temperature conditions. The apparatus is a three dimensional structure having a specifically defined range of electrical, chemical, mechanical and thermal properties enabling the structure to function adequately as an insulator which does not break down at voltages ranging between about 1,500 V and about 3,000 V, which provides a seal against a vacuum of at least about 10−6 Torr, and which can function at a continuous operating temperature of about 300° F. (148.9° C.) or greater.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: November 23, 2004
    Assignee: Applied Materials, Inc.
    Inventors: Richard Ernest Demaray, Manuel J. Herrera, David F. Eline, Chandra Deshpandey
  • Patent number: 6557248
    Abstract: A method of fabricating an electrostatic member 33 for holding a substrate 45 in a process chamber 80 containing erosive process gas. The method comprises the steps of forming an electrostatic member 33 comprising an insulator or dielectric layer 35 covering an electrically conductive layer, and shaping the electrostatic member 33 to form a dielectric covered electrode and an electrical connector 55 attached to the dielectric covered electrode 50 to conduct charge to the dielectric covered electrode 50.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: May 6, 2003
    Assignee: Applied Materials Inc.
    Inventors: Shamouil Shamouilian, Manoocher Birang, John F. Cameron, Chandra Deshpandey, Alfred Goldspeil, Ron Northrup, Semyon Sherstinsky, Sasson Someth
  • Publication number: 20020187271
    Abstract: In accordance with the present invention, an insulating sealing structure useful in physical vapor deposition apparatus is provided. The insulating sealing structure is capable of functioning under high vacuum and high temperature conditions. The apparatus is a three dimensional structure having a specifically defined range of electrical, chemical, mechanical and thermal properties enabling the structure to function adequately as an insulator which does not break down at voltages ranging between about 1,500 V and about 3,000 V, which provides a seal against a vacuum of at least about 10−6 Torr, and which can function at a continuous operating temperature of about 300° F. (148.9° C.) or greater.
    Type: Application
    Filed: June 25, 2002
    Publication date: December 12, 2002
    Inventors: Richard Ernest Demaray, Manuel J. Herrera, David F. Eline, Chandra Deshpandey
  • Patent number: 6436509
    Abstract: In accordance with the present invention, an insulating sealing structure useful in physical vapor deposition apparatus is provided. The insulating sealing structure is capable of functioning under high vacuum and high temperature conditions. The apparatus is a three dimensional structure having a specifically defined range of electrical, chemical, mechanical and thermal properties enabling the structure to function adequately as an insulator which does not break down at voltages ranging between about 1,500 V and about 3,000 V, which provides a seal against a vacuum of at least about 10−6 Torr, and which can function at a continuous operating temperature of about 300° F. (148.9° C.) or greater.
    Type: Grant
    Filed: January 6, 2000
    Date of Patent: August 20, 2002
    Assignee: Applied Materials, Inc.
    Inventors: Richard Ernest Demaray, Manuel J. Herrera, David F. Eline, Chandra Deshpandey
  • Patent number: 6362097
    Abstract: Thin semiconductor films or layers having a pre-selected degree of crystallinity, from amorphous material to poly-crystalline material, can be obtained by selecting an appropriate aspect ratio for a collimator used during a sputtering process. The orientation of the deposited film also can be tailored by selection of the collimator aspect ratio. Sputtered collimation permits highly crystalline films to be formed at temperatures significantly below the annealing temperature of the sputtered material. Thus, required fabrication steps and increase the throughput of the use of low temperatures allows films of substantially greater crystallinity and carrier mobility to be fabricated on glass and other low temperature substrates. Additionally, thin semiconductor Trapped charge defects also can be reduced by grounding the collimator to provide electrical isolation between the charged plasma particles and the substrate on which the sputtered layer is to be formed.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: March 26, 2002
    Assignee: Applied Komatsu Technlology, Inc.
    Inventors: Richard Ernest Demaray, Chandra Deshpandey, Rajiv Gopal Pethe
  • Patent number: 6033483
    Abstract: In accordance with the present invention, an insulating sealing structure useful in physical vapor deposition apparatus is provided. The insulating sealing structure is capable of functioning under high vacuum and high temperature conditions. The apparatus is a three dimensional structure having a specifically defined range of electrical, chemical, mechanical and thermal properties enabling the structure to function adequately as an insulator which does not break down at voltages ranging between about 1,500 V and about 3,000 V, which provides a seal against a vacuum of at least about 10.sup.-6 Torr, and which can function at a continuous operating temperature of about 300.degree. F. (148.9.degree. C.) or greater.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: March 7, 2000
    Assignee: Applied Materials, Inc.
    Inventors: Richard Ernest Demaray, Manuel J. Herrera, David F. Eline, Chandra Deshpandey
  • Patent number: 6023405
    Abstract: An electrostatic chuck (20) for holding a substrate (45) is described. One version of the chuck (20) suitable for mounting on a base (25), comprises (i) an electrostatic member (33) having an electrode (50) therein, and (ii) an electrical lead (60) extending through the base (25) to electrically engage the electrode (50) of the electrostatic member (33). When the chuck (20) is used to hold a substrate (45) in a process chamber (80) containing erosive process gas, the substrate (45) covers and substantially protects the electrical lead (60) from erosion by the erosive process gas. In a preferred version of the chuck (20), an electrical connector (55) forming an integral extension of the electrode (50), electrically connects the electrode (50) to a voltage supply terminal (70) used to operate the chuck (20).
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: February 8, 2000
    Assignee: Applied Materials, Inc.
    Inventors: Shamouil Shamouilian, Manoocher Birang, John F. Cameron, Chandra Deshpandey, Alfred Goldspeil, Ron Northrup, Semyon Shertinsky, Sasson Somekh
  • Patent number: 5996218
    Abstract: A method of forming an electrostatic chuck 20 for holding substrates 42 in a process chamber 40 containing a magnetic flux 43 is described. The method comprises the steps of forming a base 22 for supporting a substrate 42. An insulator 26 with an electrode 24 therein, is formed on the base 22. A magnetic shunt 34 comprising a ferromagnetic material is formed either (i) on the base 22, or (ii) in the insulator 26, or (iii) directly below, and contiguous to, the base 22.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: December 7, 1999
    Assignee: Applied Materials Inc.
    Inventors: Shamouil Shamouilian, John F. Cameron, Chandra Deshpandey, Yuh-Jia Su
  • Patent number: 5822171
    Abstract: An electrostatic chuck (20) for holding a substrate (45) is described. One version of the chuck (20) suitable for mounting on a base (25), comprises (i) an electrostatic member (33) having an electrode (50) therein, and (ii) an electrical lead (60) extending through the base (25) to electrically engage the electrode (50) of the electrostatic member (33). When the chuck (20) is used to hold a substrate (45) in a process chamber (80) containing erosive process gas, the substrate (45) covers and substantially protects the electrical lead (60) from erosion by the erosive process gas. In a preferred version of the chuck (20), an electrical connector (55) forming an integral extension of the electrode (50), electrically connects the electrode (50) to a voltage supply terminal (70) used to operate the chuck (20).
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: October 13, 1998
    Assignee: Applied Materials, Inc.
    Inventors: Shamouil Shamouilian, Manoocher Birang, John F. Cameron, Chandra Deshpandey, Alfred Goldspiel, Ron Northrup, Semyon Shertinsky, Sasson Somekh
  • Patent number: 5636098
    Abstract: An erosion resistant electrostatic chuck 20 for holding a substrate 45 having a peripheral edge 50, in an erosive environment, comprises an electrostatic member 25 including (i) an electrode 30, and (ii) an insulator 35 covering the electrode. A barrier 55 is circumferentially disposed about the electrostatic member 25. The barrier 55 comprises a first contact surface 60 capable of being pressed against the peripheral edge 50 of the substrate 45 to form a seal around the substrate 45 to reduce exposure of the electrostatic member 25 of the chuck 20 to the erosive environment.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: June 3, 1997
    Assignee: Applied Materials, Inc.
    Inventors: Joseph Salfelder, Dennis Grimard, John F. Cameron, Chandra Deshpandey, Robert Ryan, Michael G. Chafin
  • Patent number: 5631803
    Abstract: An electrostatic chuck (20) for holding a substrate (40) in a process chamber (50) comprises a base (25) supporting a resilient insulator (30). The insulator (30) comprises (i) an electrode (35) embedded therein; (ii) a top surface (34) with a peripheral edge (32); and (iii) cooling grooves (45) for holding coolant in the top surface (34), the tips (125) of the cooling grooves (45) and the peripheral edge (32) of the insulator (30) defining an edge gap (130) having a width w. The width w of the edge gap (130) is sized sufficiently small that the coolant in the grooves (45) cools the perimeter (120) of the substrate (40) held on the chuck (20). The insulator (30) is sufficiently thick that when a substrate (40) is electrostatically held on the chuck (20) and coolant is held in the cooling grooves (45), the insulator (30) in the edge gap (130) resiliently conforms to the substrate (40) so that substantially no coolant leaks out from the tips (125) of the cooling grooves (45).
    Type: Grant
    Filed: January 6, 1995
    Date of Patent: May 20, 1997
    Assignee: Applied Materials, Inc.
    Inventors: John F. Cameron, Joseph F. Salfelder, Chandra Deshpandey
  • Patent number: 5592358
    Abstract: An electrostatic chuck 20 for holding substrates 42 in a process chamber 40 containing a magnetic flux 43 comprises a base 22 having an upper surface adapted to support a substrate 42 thereon. An insulator 26 with an electrode 24 therein, is on the base 22. A magnetic shunt 34 comprising a ferromagnetic material is positioned (i) either on the base 22, or (ii) in the insulator 26, or (iii) directly below, and contiguous to, the base 22.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: January 7, 1997
    Assignee: Applied Materials, Inc.
    Inventors: Shamouil Shamouilian, John F. Cameron, Chandra Deshpandey, Yuh-Jia Su