Patents by Inventor Liang W. Zhang

Liang W. Zhang 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: 10066927
    Abstract: Inspection of microelectronic devices is described using near infrared light. In one example, a dielectric material layer on a substrate is illuminated with a near infrared light beam. The substrate has at least one contact land, the dielectric material layer overlies at least a portion of the contact land, and the substrate has at least one via defined in the dielectric material layer, the via exposing at least a portion of the contact land. Reflected near infrared light is reflected from the substrate at a camera. The position of the via is determined relative to the contact land from the reflected light beam using an image processing device.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: September 4, 2018
    Assignee: Intel Corporation
    Inventors: Liang W. Zhang, Zhihua Zou, Osborne A. Martin, III, Robert F. Wiedmaier
  • Publication number: 20160363542
    Abstract: Inspection of microelectronic devices is described using near infrared light. In one example, a dielectric material layer on a substrate is illuminated with a near infrared light beam. The substrate has at least one contact land, the dielectric material layer overlies at least a portion of the contact land, and the substrate has at least one via defined in the dielectric material layer, the via exposing at least a portion of the contact land. Reflected near infrared light is reflected from the substrate at a camera. The position of the via is determined relative to the contact land from the reflected light beam using an image processing device.
    Type: Application
    Filed: August 24, 2016
    Publication date: December 15, 2016
    Applicant: Intel Corporation
    Inventors: Liang W. Zhang, Zhihua Zou, Osborne A. Martin, III, Robert F. Wiedmaier
  • Patent number: 9488595
    Abstract: Inspection of microelectronic devices is described using near infrared light. In one example, a dielectric material layer on a substrate is illuminated with a near infrared light beam. The substrate has at least one contact land, the dielectric material layer overlies at least a portion of the contact land, and the substrate has at least one via defined in the dielectric material layer, the via exposing at least a portion of the contact land. Reflected near infrared light is reflected from the substrate at a camera. The position of the via is determined relative to the contact land from the reflected light beam using an image processing device.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: November 8, 2016
    Assignee: Intel Corporation
    Inventors: Liang W. Zhang, Zhihua Zou, Osborne A. Martin, III, Robert F. Wiedmaier
  • Publication number: 20150276621
    Abstract: Inspection of microelectronic devices is described using near infrared light. In one example, a dielectric material layer on a substrate is illuminated with a near infrared light beam. The substrate has at least one contact land, the dielectric material layer overlies at least a portion of the contact land, and the substrate has at least one via defined in the dielectric material layer, the via exposing at least a portion of the contact land. Reflected near infrared light is reflected from the substrate at a camera. The position of the via is determined relative to the contact land from the reflected light beam using an image processing device.
    Type: Application
    Filed: March 28, 2014
    Publication date: October 1, 2015
    Inventors: Liang W. Zhang, Zhihua Zou, Osborne A. Martin, III, Robert F. Wiedmaier