Patents by Inventor Leuh Fang

Leuh Fang 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: 11436992
    Abstract: A display system and a method for forming an output buffer of a source driver are provided. The display system includes a plurality of pixels coupled to a plurality of gate lines and a plurality of source lines. A gate driver provides a plurality of gate signals to the plurality of gate lines. A source driver provides a plurality of image signals to the plurality of source lines. The source driver includes an output buffer. The output buffer includes a transistor. The transistor is either a native transistor device, a depletion-mode transistor device or a low-threshold transistor device.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: September 6, 2022
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Yu-Lung Chin, Ching-Yi Hsu, Chang-He Liu, Chih-Cherng Liao, Jun-Wei Chen, Leuh Fang
  • Publication number: 20200082780
    Abstract: A display system and a method for forming an output buffer of a source driver are provided. The display system includes a plurality of pixels coupled to a plurality of gate lines and a plurality of source lines. A gate driver provides a plurality of gate signals to the plurality of gate lines. A source driver provides a plurality of image signals to the plurality of source lines. The source driver includes an output buffer. The output buffer includes a transistor. The transistor is either a native transistor device, a depletion-mode transistor device or a low-threshold transistor device.
    Type: Application
    Filed: November 12, 2019
    Publication date: March 12, 2020
    Applicant: Vanguard International Semiconductor Corporation
    Inventors: Yu-Lung CHIN, Ching-Yi HSU, Chang-He LIU, Chih-Cherng LIAO, Jun-Wei CHEN, Leuh FANG
  • Patent number: 10395085
    Abstract: Embodiments of the disclosure relate to a semiconductor device. The semiconductor device includes a semiconductor substrate, a first metal wiring layer disposed on the semiconductor substrate, an interlayer dielectric layer (ILD) disposed on the first metal wiring layer, a second metal wiring layer disposed on the interlayer dielectric layer, and a first via and a second via disposed in the interlayer dielectric layer. The second via is on the first via, and there is not any metal wiring layer in the interlayer dielectric layer.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: August 27, 2019
    Assignee: VANGUARD INTERNATIONAL SEMICONDUCTOR CORPORATION
    Inventors: Shih-Hao Liu, Leuh Fang, Chih-Cherng Liao, Yun-Chou Wei, Chung-Ren Lao, Wu-Hsi Lu
  • Publication number: 20190171857
    Abstract: Embodiments of the disclosure relate to a semiconductor device. The semiconductor device includes a semiconductor substrate, a first metal wiring layer disposed on the semiconductor substrate, an interlayer dielectric layer (ILD) disposed on the first metal wiring layer, a second metal wiring layer disposed on the interlayer dielectric layer, and a first via and a second via disposed in the interlayer dielectric layer. The second via is on the first via, and there is not any metal wiring layer in the interlayer dielectric layer.
    Type: Application
    Filed: December 5, 2017
    Publication date: June 6, 2019
    Applicant: Vanguard International Semiconductor Corporation
    Inventors: Shih-Hao LIU, Leuh Fang, Chih-Cherng Liao, Yun-Chou Wei, Chung-Ren Lao, Wu-Hsi Lu
  • Publication number: 20190019472
    Abstract: A display system and a method for forming an output buffer of a source driver are provided. The display system includes a plurality of pixels coupled to a plurality of gate lines and a plurality of source lines. A gate driver provides a plurality of gate signals to the plurality of gate lines. A source driver provides a plurality of image signals to the plurality of source lines. The source driver includes an output buffer. The output buffer includes a transistor. The transistor is either a native transistor device, a depletion-mode transistor device or a low-threshold transistor device.
    Type: Application
    Filed: July 13, 2017
    Publication date: January 17, 2019
    Applicant: Vanguard International Semiconductor Corporation
    Inventors: Yu-Lung CHIN, Ching-Yi HSU, Chang-He LIU, Chih-Cherng LIAO, Jun-Wei CHEN, Leuh FANG
  • Patent number: 6001693
    Abstract: The antifuse structure of the present invention includes a bottom planarized electrode, an ILD disposed over the bottom electrode, an antifuse cell opening in and through the ILD exposing the bottom electrode, a first barrier metal layer disposed in the antifuse cell opening to protect the antifuse material layer from diffusion from the bottom electrode and to form an effective bottom electrode of reduced area, hence reducing the capacitance of the device, an antifuse material layer disposed in the antifuse cell opening and over the first barrier metal layer, a second barrier metal layer disposed over the antifuse material layer, and a top electrode disposed over the second barrier metal layer.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: December 14, 1999
    Inventors: Yen Yeouchung, Shih-Oh Chen, Leuh Fang, Elaine K. Poon, James B. Kruger
  • Patent number: 5541441
    Abstract: The antifuse structure of the present invention includes a bottom planarized electrode, an ILD disposed over the bottom electrode, an antifuse cell opening in and through the ILD exposing the bottom electrode, a first barrier metal layer disposed in the antifuse cell opening to protect the antifuse material layer from diffusion from the bottom electrode and to form an effective bottom electrode of reduced area, hence reducing the capacitance of the device, an antifuse material layer disposed in the antifuse cell opening and over the first barrier metal layer, a second barrier metal layer disposed over the antifuse material layer, and a top electrode disposed over the second barrier metal layer.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: July 30, 1996
    Assignee: Actel Corporation
    Inventors: Yen Yeuochung, Shih-Oh Chen, Leuh Fang, Elaine K. Poon, James B. Kruger
  • Patent number: 5369053
    Abstract: A process for the fine replication of aluminum-based metallizations on semiconductor devices. A layer of material, such as silicon dioxide or oxynitride, that is resistant to the chlorine-based etchants that readily attack aluminum and aluminum alloys is deposited upon an aluminum-based metallization layer. A relatively thin layer of photoresist is deposited thereover and developed. Etchant gases attack the dielectric layer, creating a patterned hard mask for subsequent etching of the underlying metal.
    Type: Grant
    Filed: March 8, 1991
    Date of Patent: November 29, 1994
    Assignee: Hewlett-Packard Company
    Inventor: Leuh Fang
  • Patent number: 5164331
    Abstract: A method of forming an interconnect, particularly a local interconnect, for a silicon substrate having integrated circuit devices between dielectric regions. Titanium disilicide is formed on electrode regions of the integrated circuit devices, whereafter titanium-tungsten is deposited across the silicon substrate. A photomask is formed and patterned to cover selected portions of the titanium-tungsten layer. The uncovered portions receive a preliminary etch of chlorine and carbon tetrafluoride to remove oxide. A second etch using trifluoromethane and oxygen removes the uncovered portions, leaving an electrically conductive interconnect extending from an electrode region onto a dielectric region leading to a second electrode region. The photomask is then removed.
    Type: Grant
    Filed: October 3, 1991
    Date of Patent: November 17, 1992
    Assignee: Hewlett-Packard Company
    Inventors: Jung Lin, Warren M. Uesato, Leuh Fang