Patents by Inventor Keng Sang Cha

Keng Sang Cha 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).

  • Publication number: 20100055848
    Abstract: In inspecting for quality of underfill material dispensed in an IC package, a camera image is captured for the IC package having the underfill material dispensed between an IC die and a package substrate. A data processor analyzes the camera image to determine an occurrence of an unacceptable condition of the underfill material. Pre-heating and/or post-heating of the package substrate before and/or after dispensing the underfill material by a contact-less heater ensures uniform spreading of the underfill material.
    Type: Application
    Filed: October 9, 2009
    Publication date: March 4, 2010
    Inventors: Keng Sang Cha, Tek Seng Tan, Haris Fazelah, Ahmad Zahrain B. Mohamad Shakir
  • Patent number: 7622311
    Abstract: In inspecting for quality of underfill material dispensed in an IC package, a camera image is captured for the IC package having the underfill material dispensed between an IC die and a package substrate. A data processor analyzes the camera image to determine an occurrence of an unacceptable condition of the underfill material. Pre-heating and/or post-heating of the package substrate before and/or after dispensing the underfill material by a contact-less heater ensures uniform spreading of the underfill material.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: November 24, 2009
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Keng Sang Cha, Tek Seng Tan, Haris Fazelah, Ahmad Zahrain B. Mohamad Shakir
  • Patent number: 7256065
    Abstract: A method for coupling a lid to a support substrate having a semiconductor chip coupled thereto and a clamp fixture. Each semiconductor component has a semiconductor chip mounted to a semiconductor component and a lid coupled to the support substrate via a lid attach material. The lid attach material is cured either using a two-step process that includes a partial cure step followed by a clampless cure step or by curing the die attach material in a clamp fixture without including a pre-cure step. The semiconductor component manufacture decides on the curing approach based on cost and the number of semiconductor components being manufactured. If the semiconductor manufacturer opts for curing with a clamp fixture, the clamp fixture includes a base plate insert on which the semiconductor components are placed and a compression mechanism that includes a compression plate having a compressive material disposed thereon.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: August 14, 2007
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Seah Sun Too, Edward Alcid, Ahmad Juwanda, Keng Sang Cha, Leang Hua Kam, Tek Seng Tan
  • Patent number: 7256067
    Abstract: An integrated circuit lid fixture and methods of using the same are provided. In one aspect, an integrated circuit lid fixture is provided that includes a base that has a plurality of pillars. Each of the plurality of pillars has a surface for supporting a substrate that may be removably seated thereon. The surfaces of the plurality of pillars have a first footprint at least as large as a footprint of the substrates to be placed thereon. A plate is provided for applying a compressive force to an integrated circuit lid positioned on any of the substrates removably seated on the pillars.
    Type: Grant
    Filed: May 1, 2006
    Date of Patent: August 14, 2007
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Seah Sun Too, Tek Seng Tan, Keng Sang Cha, Kee Hean Keok