Patents by Inventor Tai Chong Chai

Tai Chong Chai 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: 10755993
    Abstract: Various embodiments may provide an electrical connection structure. The electrical connection structure may include a first substrate having a first surface defining a cavity, and an inner wall defining a via extending from the cavity. The electrical connection structure may also include an interconnect structure provided in the via so that at least a portion of the interconnect structure protrudes into the cavity. The electrical connection structure may further include a second substrate having a second surface facing the first surface. The electrical connection structure may additionally include a connection element on the second surface. At least a portion of the connection element may be received in the cavity so that the connection element is in electrical connection with the interconnect structure.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: August 25, 2020
    Assignee: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: David Ho, Vempati Srinivasa Rao, Tai Chong Chai, Surya Bhattacharya
  • Publication number: 20190080974
    Abstract: Various embodiments may provide an electrical connection structure. The electrical connection structure may include a first substrate having a first surface defining a cavity, and an inner wall defining a via extending from the cavity. The electrical connection structure may also include an interconnect structure provided in the via so that at least a portion of the interconnect structure protrudes into the cavity. The electrical connection structure may further include a second substrate having a second surface facing the first surface. The electrical connection structure may additionally include a connection element on the second surface. At least a portion of the connection element may be received in the cavity so that the connection element is in electrical connection with the interconnect structure.
    Type: Application
    Filed: March 16, 2017
    Publication date: March 14, 2019
    Inventors: David HO, Vempati Srinivasa RAO, Tai Chong CHAI, Surya BHATTACHARYA
  • Patent number: 9506823
    Abstract: A bonding stress testing arrangement and a method of determining stress are provided. The bonding stress testing arrangement includes at least one bond pad; a sensor assembly comprising any one of a first sensor arrangement, a second sensor arrangement and a combination of the first sensor arrangement and the second sensor arrangement; wherein the first sensor arrangement is adapted to measure an average stress on a portion of a bonding area under the at least one bond pad, and the second sensor arrangement is adapted to determine stress distribution over a portion or an entire of the bonding area under the at least one bond pad.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: November 29, 2016
    Assignee: Agency for Science, Technology and Research
    Inventors: Cheryl Sharmani Selvanayagam, Xiaowu Zhang, Tai Chong Chai, Alastair David Trigg, Cheng Kuo Cheng, Xian Tong Chen, Kripesh Vaidyanathan
  • Publication number: 20130199303
    Abstract: A bonding stress testing arrangement and a method of determining stress are provided. The bonding stress testing arrangement includes at least one bond pad; a sensor assembly comprising any one of a first sensor arrangement, a second sensor arrangement and a combination of the first sensor arrangement and the second sensor arrangement; wherein the first sensor arrangement is adapted to measure an average stress on a portion of a bonding area under the at least one bond pad, and the second sensor arrangement is adapted to determine stress distribution over a portion or an entire of the bonding area under the at least one bond pad.
    Type: Application
    Filed: May 3, 2011
    Publication date: August 8, 2013
    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Cheryl Sharmani Selvanayagam, Xiaowu Zhang, Tai Chong Chai, Alastair David Trigg, Cheng Kuo Cheng, Xian Tong Chen, Kripesh Vaidyanathan
  • Publication number: 20120126419
    Abstract: According to one embodiment of the present invention, a substrate arrangement is provided. The substrate arrangement includes a first substrate; a second substrate positioned above the first substrate, the second substrate comprising a first through hole; a third substrate positioned above the second substrate, the third substrate comprising a second through hole; a first electrically conductive interconnect pillar positioned on the first substrate and extending from the first substrate through the first through hole to electrically contact the third substrate; and a second electrically conductive interconnect pillar positioned on the second substrate and extending from the second substrate through the second through hole. A method of manufacturing a substrate arrangement is also provided.
    Type: Application
    Filed: July 24, 2008
    Publication date: May 24, 2012
    Inventors: Vaidyanathan Kripesh, Navas Khan Orattikalandar, Srinivasa Rao Vempati, Yak Long Samuel Lim, Yee Mong Khoo, Chee Houe Khong, Xiao Wu Zhang, Tai Chong Chai, Hon-Shing John Lau
  • Patent number: 7189594
    Abstract: A wafer level package formed on an integrated circuit chip having bondpads and a fabrication method therefor is disclosed. The wafer level package comprises at least one first, second and third separation layer having at least one first and second conductive layer formed in-between the separation layers. The at least one first conductive layer is formed on the at least one first separation layer and is coupled to the bondpads. The at least one second conductive layer is formed on the at last one second separation layer wherein the at least one second conductive layer is electrically coupled to the at least one first conductive layer. The at least one third separation layer allows solder to be attached to the at least one second conductive layer for electrically coupling the solder to the bondpads. A chip ground plane is laid in the integrated circuit chip for providing a ground to the at least one first conductive layer and the solder.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: March 13, 2007
    Assignee: Agency for Science, Technology and Research
    Inventors: Vaidyanathan Kripesh, Wai Kwan Wong, Mihai Dragos Rotaru, Tai Chong Chai, Mahadevan Krishna Iyer
  • Publication number: 20060057832
    Abstract: A wafer level package formed on an integrated circuit chip having bondpads and a fabrication method therefor is disclosed. The wafer level package comprises at least one first, second and third separation layer having at least one first and second conductive layer formed in-between the separation layers. The at least one first conductive layer is formed on the at least one first separation layer and is coupled to the bondpads. The at least one second conductive layer is formed on the at last one second separation layer wherein the at least one second conductive layer is electrically coupled to the at least one first conductive layer. The at least one third separation layer allows solder to be attached to the at least one second conductive layer for electrically coupling the solder to the bondpads. A chip ground plane is laid in the integrated circuit chip for providing a ground to the at least one first conductive layer and the solder.
    Type: Application
    Filed: September 10, 2004
    Publication date: March 16, 2006
    Applicant: Agency for Science, Technology and Research
    Inventors: Vaidyanathan Kripesh, Wai Kwan Wong, Mihai Rotaru, Tai Chong Chai, Mahadevan Iyer
  • Patent number: 6621151
    Abstract: A lead-frame for connecting and supporting an integrated circuit having an apertured frame with dimensions smaller than the corresponding dimensions of the chip so that chip-pad shoulder can be eliminated and the chip attach fillet is made remote from the chip corner.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: September 16, 2003
    Assignee: Institute of Microelectronics
    Inventors: Tai Chong Chai, Thiam Beng Lim, Yong Chua Teo, James Tan, Raymundo Camenforte, Eric Neo, Daniel Yap
  • Patent number: 6583501
    Abstract: A lead-frame for connecting and supporting an integrated circuit chip with a chip accommodating zone with inwardly extending ears for supporting the chip including minimum shoulder area, and having open crack and delamination stopping regions.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: June 24, 2003
    Assignee: Institute of Microelectronics
    Inventors: Tai Chong Chai, Thiam Beng Lim, Yong Chua Teo, James Tan, Ray Camenforte, Eric Neo, Daniel Yap
  • Publication number: 20020163078
    Abstract: A lead-frame for connecting and supporting an integrated circuit chip with a chip accommodating zone with inwardly extending ears for supporting the chip including minimum shoulder area, and having open crack and delamination stopping regions.
    Type: Application
    Filed: February 7, 2000
    Publication date: November 7, 2002
    Inventors: Tai-Chong Chai, Thiam Beng Lim, Yong Chua Teo, James Tan, Raymundo Camenforte, Eric Neo, Daniel Yap
  • Patent number: 5967577
    Abstract: A dispenser contains a chamber enclosed by an upper wall and a lower wall, both walls are oriented parallel to each other. The upper wall has a vertically bored inlet port and the lower wall has a plurality of vertically bored outlet ports for providing access to the chamber. The outlet ports are geometrically arranged in an array pattern characterized by equidistantly spaced rows and columns of bores. There is a plurality of baffle plates interposed between the upper wall and the lower wall. The baffle plates, which are spatially separated from each other, are oriented parallel to and spatially separated from the upper and lower walls. The baffle plates have a plurality of vertically bored holes for providing access between the inlet port and the outlet ports, whereby the dispenser is effective in providing homogeneous flow of fluid through the outlet ports.
    Type: Grant
    Filed: September 3, 1998
    Date of Patent: October 19, 1999
    Assignee: Institute of Microelectronics
    Inventors: Sarvotham M. Bhandarkar, Kishore Kumar Chakravorty, Tai Chong Chai, Jian Hua Wu
  • Patent number: 5836520
    Abstract: A dispenser contains a chamber enclosed by an upper wall and a lower wall, both walls are oriented parallel to each other. The upper wall has a vertically bored inlet port and the lower wall has a plurality of vertically bored outlet ports for providing access to the chamber. The outlet ports are geometrically arranged in an array pattern characterized by equidistantly spaced rows and columns of bores. There is a plurality of baffle plates interposed between the upper wall and the lower wall. The baffle plates, which are spatially separated from each other, are oriented parallel to and spatially separated from the upper and lower walls. The baffle plates have a plurality of vertically bored holes for providing access between the inlet port and the outlet ports, whereby the dispenser is effective in providing homogeneous flow of fluid through the outlet ports.
    Type: Grant
    Filed: January 4, 1996
    Date of Patent: November 17, 1998
    Assignee: Institute of Microelectronics
    Inventors: Sarvotham M. Bhandarkar, Kishore Kumar Chakravorty, Tai Chong Chai, Jian Hua Wu