Patents by Inventor Yaw-Hwang Chen

Yaw-Hwang Chen 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: 5838023
    Abstract: An integrated circuit device is provided that has I/O bonding pads across the surface of the chip, where the I/O bonding pads can be electrically accessed via ancillary testing pads in order to perform functionality or other necessary tests prior to bump bonding formation without damaging the bonding pads or the underlying circuitry.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: November 17, 1998
    Assignee: Hewlett-Packard Company
    Inventors: Atul Goel, Yaw-Hwang Chen, John R. Spencer
  • Patent number: 5591651
    Abstract: This invention pertains to a lateral bipolar transistor comprising an emitter, a base and a collector. The transistor exhibits improved function and overall size reduction, due to the base and emitter structure. An island forms both the base and emitter regions in the transistor structure with the base region being above the collector region, below the emitter region, and surrounded by a dielectric region. The emitter is surrounded by emitter isolation walls, which are formed approximately 0.2 microns above the plane of the dielectric region, such that any manufacturing variances will not cause the emitter isolation walls to contact the dielectric region and pinch-off the base region from the base junction region. This structure also allows the size of the base-emitter junction to be decreased without increasing the parasitic characteristics of the transistor.
    Type: Grant
    Filed: July 12, 1995
    Date of Patent: January 7, 1997
    Assignee: Hewlett-Packard Co.
    Inventor: Yaw-Hwang Chen
  • Patent number: 5506383
    Abstract: A wafer scale multi-chip semiconductor module used to interconnect and house a plurality of integrated circuit chips. The wafer scale multi-chip semiconductor module has an interconnect network extending between the integrated circuit chips along the substrate of the semiconductor wafer module, which allows electrical access to the integrated circuit chips by means of electrically conductive bridge connections. The integrated circuit chips are placed in openings in the semiconductor wafer module, allowing for excellent planarity.
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: April 9, 1996
    Assignee: Hewlett-Packard Company
    Inventor: Yaw-Hwang Chen
  • Patent number: 5465006
    Abstract: This invention pertains to a lateral bipolar transistor comprising an emitter, a base and a collector. The transistor exhibits improved function and overall size reduction, due to the base and emitter structure. An island forms both the base and emitter regions in the transistor structure with the base region being above the collector region, below the emitter region, and surrounded by a dielectric region. The emitter is surrounded by emitter isolation walls, which are formed approximately 0.2 microns above the plane of the dielectric region, such that any manufacturing variances will not cause the emitter isolation walls to contact the dielectric region and pinch-off the base region from the base junction region. This structure also allows the size of the base-emitter junction to be decreased without increasing the parasitic characteristics of the transistor.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: November 7, 1995
    Assignee: Hewlett-Packard Company
    Inventor: Yaw-Hwang Chen
  • Patent number: 5418687
    Abstract: A wafer scale multi-chip semiconductor module used to interconnect and house a plurality of integrated circuit chips. The wafer scale multi-chip semiconductor module has an interconnect network extending between the integrated circuit chips along the substrate of the semiconductor wafer module, which allows electrical access to the integrated circuit chips by means of electrically conductive bridge connections. The integrated circuit chips are placed in openings in the semiconductor wafer module, allowing for excellent planarity.
    Type: Grant
    Filed: February 1, 1994
    Date of Patent: May 23, 1995
    Assignee: Hewlett-Packard Company
    Inventor: Yaw-Hwang Chen