Patents by Inventor Swayambu Ramani

Swayambu Ramani 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: 6448708
    Abstract: A flat panel display and a method for forming a flat panel display. In one embodiment, the flat panel display includes a cathodic structure which is formed within an active area on a backplate. The cathodic structure includes a emitter electrode metal composed of strips of aluminum overlain by a layer of cladding material. The use of aluminum and cladding material to form emitter electrode metal gives emitter electrode metal segments which are highly conductive due to the high conductivity of aluminum. By using a suitable cladding material and processing steps, a bond between the aluminum and the cladding material is formed which has good electrical conductivity. In one embodiment, tantalum is used as a cladding material. Tantalum forms a bond with the overlying resistive layer which has good electrical conductivity. Thus, the resulting structure has very high electrical conductivity through the aluminum layer and high conductivity into the resistive layer.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: September 10, 2002
    Assignee: Candescent Intellectual Property Services, Inc.
    Inventors: Kishore K. Chakravorty, Swayambu Ramani, Stephanie J. Oberg, Johan Knall, Duane A. Haven, Ronald S. Besser, Paul J. Louris, Arthur J. Learn, Christopher J. Spindt, Roger W. Barton
  • Patent number: 6225732
    Abstract: A flat panel display and a method for forming a flat panel display. In one embodiment, the flat panel display includes a cathodic structure which is formed within an active area on a backplate. The cathodic structure includes a row metal composed of strips of aluminum overlain by a layer of cladding material. The use of aluminum and cladding material to form row metal gives row metal segments which are highly conductive due to the high conductivity of aluminum. By using a suitable cladding material and processing steps, a bond between the aluminum and the cladding material is formed which has good electrical conductivity. In one embodiment, tantalum is used as a cladding material. Tantalum forms a bond with the overlying resistive layer which has good electrical conductivity. Thus, the resulting structure has very high electrical conductivity through the aluminum layer and high conductivity into the resistive layer.
    Type: Grant
    Filed: November 9, 1999
    Date of Patent: May 1, 2001
    Assignee: Candescent Technologies Corporation
    Inventors: Kishore K. Chakvorty, Swayambu Ramani
  • Patent number: 6084282
    Abstract: A thin-film coupled to a substrate includes a first layer and a second layer. Both layers are made of the same material, which is either a transition or a refractory metal. The first layer is doped by nitrogen and the second layer is not. The thin-film has lower stress level than a film made of the same material and having similar thickness as the thin-film, but without doping the film by nitrogen. Also, the thin-film has a lower sheet resistance than a film made of the same material, having similar thickness as the thin-film, and with similar atom percentage of nitrogen as the first layer. In one embodiment, the thin-film is used in a flat panel display.
    Type: Grant
    Filed: April 1, 1997
    Date of Patent: July 4, 2000
    Assignee: Candescent Technologies Corporation
    Inventor: Swayambu Ramani
  • Patent number: 6019657
    Abstract: A flat panel display and a method for forming a flat panel display. In one embodiment, the flat panel display includes a cathodic structure which is formed within an active area on a backplate. The cathodic structure includes a row metal composed of strips of aluminum overlain by a layer of cladding material. The use of aluminum and cladding material to form row metal gives row metal segments which are highly conductive due to the high conductivity of aluminum. By using a suitable cladding material and processing steps, a bond between the aluminum and the cladding material is formed which has good electrical conductivity. In one embodiment, tantalum is used as a cladding material. Tantalum forms a bond with the overlying resistive layer which has good electrical conductivity. Thus, the resulting structure has very high electrical conductivity through the aluminum layer and high conductivity into the resistive layer.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: February 1, 2000
    Assignee: Candescent Technologies Corporation
    Inventors: Kishore K. Chakvorty, Swayambu Ramani
  • Patent number: 6013986
    Abstract: An electron-emitting device employs a multi-layer resistor (46). A lower layer (48) of the resistor overlies an emitter electrode (42). A set of electron-emissive elements (54) overlie an upper layer (50) of the resistor. Each resistive layer extends continuously from a location below each electron-emissive element to a location below each other electron-emissive element. The two resistive layers are of different chemical composition. The upper resistive layer is typically formed with cermet. The lower resistive layer is typically formed with a silicon-carbon compound.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: January 11, 2000
    Assignee: Candescent Technologies Corporation
    Inventors: N. Johan Knall, Duane A. Haven, Swayambu Ramani
  • Patent number: 5894188
    Abstract: A flat panel display and a method for forming a flat panel display. In one embodiment, the flat panel display includes a cathodic structure which is formed within an active area on a backplate. The cathodic structure includes a row metal composed of strips of aluminum overlain by a layer of cladding material. The use of aluminum and cladding material to form row metal gives row metal segments which are highly conductive due to the high conductivity of aluminum. By using a suitable cladding material and processing steps, a bond between the aluminum and the cladding material is formed which has good electrical conductivity. In one embodiment, tantalum is used as a cladding material. Tantalum forms a bond with the overlying resistive layer which has good electrical conductivity. Thus, the resulting structure has very high electrical conductivity through the aluminum layer and high conductivity into the resistive layer.
    Type: Grant
    Filed: September 17, 1997
    Date of Patent: April 13, 1999
    Assignee: Candescent Technologies Corporation
    Inventors: Kishore K. Chakvorty, Swayambu Ramani