Patents by Inventor Jia-Ching Doong

Jia-Ching Doong 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: 7217616
    Abstract: A non-volatile memory cell comprising a transistor and two plane capacitors. In the memory cell, a switching device is disposed on a substrate, a first plane capacitor having a first doped region and a second plane capacitor having a second doped region. The switching device and the first and second plane capacitors share a common polysilicon floating gate configured to retain charge as a result of programming the memory cell. The memory cell is configured to be erased by tunneling between the first doped region and the common polysilicon floating gate without causing junction breakdown within the memory cell. The first and second doped regions are formed in the substrate before forming the common polysilicon floating gate such that the capacitance of the first and second plane capacitors are constant when the memory cell operates within an operating voltage range.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: May 15, 2007
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Chao-Ming Koh, Jia-Ching Doong, Gia-Hua Hsieh
  • Publication number: 20060258101
    Abstract: A non-volatile memory cell comprising a transistor and two plane capacitors. In the memory cell, a switching device is disposed on a substrate, a first plane capacitor having a first doped region and a second plane capacitor having a second doped region. The switching device and the first and second plane capacitors share a common polysilicon floating gate configured to retain charge as a result of programming the memory cell. The memory cell is configured to be erased by tunneling between the first doped region and the common polysilicon floating gate without causing junction breakdown within the memory cell. The first and second doped regions are formed in the substrate before forming the common polysilicon floating gate such that the capacitance of the first and second plane capacitors are constant when the memory cell operates within an operating voltage range.
    Type: Application
    Filed: July 6, 2006
    Publication date: November 16, 2006
    Applicant: Vanguard International Semiconductor Corporation
    Inventors: Chao-Ming Koh, Jia-Ching Doong, Gia-Hua Hsieh
  • Patent number: 7115938
    Abstract: A non-volatile memory cell comprising a transistor and two plane capacitors. In the memory cell, a switching device is disposed on a substrate, a first plane capacitor having a first doped region and a second plane capacitor having a second doped region. The switching device and the first and second plane capacitors share a common ploysilicon floating gate configured to retain charge as a result of programming the memory cell. The memory cell is configured to be erased by tunneling between the first doped region and the common ploysilicon floating gate without causing junction breakdown within the memory cell. The first and second doped regions are formed in the substrate before forming the common ploysilicon floating gate such that the capacitance of the first and second plane capacitors are constant when the memory cell operates within an operating voltage range.
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: October 3, 2006
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Chao-Ming Koh, Jia-Ching Doong, Gia-Hua Hsieh
  • Patent number: 7092600
    Abstract: A method for fabricating Fiber Bragg Grating elements and planar light circuits made thereof. A mask having a predetermined pattern and a wafer are provided, wherein a light-guiding channel filled with light-guiding substance is formed on the wafer. A photoresist layer is then formed to cover the wafer. Magnification of a photolithography apparatus is adjusted to a first Mag., followed by transferring the pattern on the mask to the photoresist layer to form a first pattern. Light-guiding substance not covered by the photoresist layer is then removed so that the first pattern is transferred to the light-guiding channel. The light-guiding channel then forms a Fiber Bragg Grating element.
    Type: Grant
    Filed: May 23, 2005
    Date of Patent: August 15, 2006
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Chao-Ming Koh, Jia-Ching Doong, Hsien-Tzu Chang, Hao-Cheng Hung
  • Patent number: 6978066
    Abstract: A method for fabricating Fiber Bragg Grating elements and planar light circuits made thereof. A mask having a predetermined pattern and a wafer are provided, wherein a light-guiding channel filled with light-guiding substance is formed on the wafer. A photoresist layer is then formed to cover the wafer. Magnification of a photolithography apparatus is adjusted to a first magnification, followed by transferring the pattern on the mask to the photoresist layer to form a first pattern. Light-guiding substance not covered by the photoresist layer is then removed so that the first pattern is transferred to the light-guiding channel. The light-guiding channel then forms a Fiber Bragg Grating element.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: December 20, 2005
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Chao-Ming Koh, Jia-Ching Doong, Hsien-Tzu Chang, Hao-Cheng Hung
  • Publication number: 20050236659
    Abstract: A non-volatile memory cell comprising a transistor and two plane capacitors. In the memory cell, a switching device is disposed on a substrate, a first plane capacitor having a first doped region and a second plane capacitor having a second doped region. The switching device and the first and second plane capacitors share a common ploysilicon floating gate configured to retain charge as a result of programming the memory cell. The memory cell is configured to be erased by tunneling between the first doped region and the common ploysilicon floating gate without causing junction breakdown within the memory cell. The first and second doped regions are formed in the substrate before forming the common ploysilicon floating gate such that the capacitance of the first and second plane capacitors are constant when the memory cell operates within an operating voltage range.
    Type: Application
    Filed: April 21, 2004
    Publication date: October 27, 2005
    Inventors: Chao-Ming Koh, Jia-Ching Doong, Gia-Hua Hsieh
  • Publication number: 20050207701
    Abstract: A method for fabricating Fiber Bragg Grating elements and planar light circuits made thereof. A mask having a predetermined pattern and a wafer are provided, wherein a light-guiding channel filled with light-guiding substance is formed on the wafer. A photoresist layer is then formed to cover the wafer. Magnification of a photolithography apparatus is adjusted to a first Mag., followed by transferring the pattern on the mask to the photoresist layer to form a first pattern. Light-guiding substance not covered by the photoresist layer is then removed so that the first pattern is transferred to the light-guiding channel. The light-guiding channel then forms a Fiber Bragg Grating element.
    Type: Application
    Filed: May 23, 2005
    Publication date: September 22, 2005
    Applicant: Vanguard International Semiconductor Corporation
    Inventors: Chao-Ming Koh, Jia-Ching Doong, Hsien-Tzu Chang, Hao-Cheng Hung
  • Publication number: 20040218860
    Abstract: A method for fabricating Fiber Bragg Grating elements and planar light circuits made thereof. A mask having a predetermined pattern and a wafer are provided, wherein a light-guiding channel filled with light-guiding substance is formed on the wafer. A photoresist layer is then formed to cover the wafer. Magnification of a photolithography apparatus is adjusted to a first Mag., followed by transferring the pattern on the mask to the photoresist layer to form a first pattern. Light-guiding substance not covered by the photoresist layer is then removed so that the first pattern is transferred to the light-guiding channel. The light-guiding channel then forms a Fiber Bragg Grating element.
    Type: Application
    Filed: August 19, 2003
    Publication date: November 4, 2004
    Inventors: Chao-Ming Koh, Jia-Ching Doong, Hsien-Tzu Chang, Hao-Cheng Hung
  • Patent number: 6294435
    Abstract: By introducing a carefully controlled anneal step after the deposition of tungsten silicide (onto a layer of polysilicon) but before the deposition of a layer of silicon oxide, interaction between the tungsten silicide and a subsequently deposited layer of silicon oxide is greatly reduced or eliminated. This gives good values for the resistance of gate lines formed from the composite as well as for the contact resistance between the polysilicon and the tungsten silicide.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: September 25, 2001
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Huey-Chi Chu, Jia-Ching Doong, Chung-Pin Yang