Patents by Inventor JunHua Guan

JunHua Guan 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: 9783412
    Abstract: A MEMS device for use in some embodiments in a microphone or pressure sensor and method of making the same wherein a portion of the package surrounding the acoustic port is deformed either away from, towards, or both away from and towards the interior of the package. By providing this raised area proximate the acoustic port, external debris is less likely to enter the acoustic port and damage the fragile MEMS die. Further, internal attachment material holding the MEMS die to the inside of the package is prevented by flowing into and obscuring the acoustic port. The advantages of this design include longer operation lifetimes for the MEMS device, greater design freedom, and increases in production yield.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: October 10, 2017
    Assignee: Unisem (M) Berhad
    Inventors: Junhua Guan, Ming Xiang Tang, Alan Evans
  • Publication number: 20160221821
    Abstract: A MEMS device for use in some embodiments in a microphone or pressure sensor and method of making the same wherein a portion of the package surrounding the acoustic port is deformed either away from, towards, or both away from and towards the interior of the package. By providing this raised area proximate the acoustic port, external debris is less likely to enter the acoustic port and damage the fragile MEMS die. Further, internal attachment material holding the MEMS die to the inside of the package is prevented by flowing into and obscuring the acoustic port. The advantages of this design include longer operation lifetimes for the MEMS device, greater design freedom, and increases in production yield.
    Type: Application
    Filed: January 29, 2015
    Publication date: August 4, 2016
    Inventors: Junhua Guan, Ming Xiang Tang, Alan Evans
  • Patent number: 8999757
    Abstract: A method for the manufacture of a package encasing a Micro-Electro-Mechanical Systems (MEMS) device provides a cover having a lid and sidewalls with a port extending through the lid. A first base component is bonded to the sidewalls defining an internal cavity. This first base component further includes an aperture extending therethrough. The MEMS device is inserted through the aperture and bonded said to the lid with the MEMS device at least partially overlapping the port. Assembly is completed by bonding a second base component to the first base component to seal the aperture. The package so formed has a cover with a lid, sidewalls and a port extending through the lid. A MEMS device is bonded to the lid and electrically interconnected to electrically conductive features disposed on the first base component. A second base component is bonded to the first base component spanning the aperture.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: April 7, 2015
    Assignee: Unisem (M) Berhad
    Inventors: Rob Protheroe, Alan Evans, Timothy Leung, Ming Xiang Tang, JunHua Guan
  • Publication number: 20140246738
    Abstract: A method for the manufacture of a package encasing a Micro-Electro-Mechanical Systems (MEMS) device provides a cover having a lid and sidewalls with a port extending through the lid. A first base component is bonded to the sidewalls defining an internal cavity. This first base component further includes an aperture extending therethrough. The MEMS device is inserted through the aperture and bonded said to the lid with the MEMS device at least partially overlapping the port. Assembly is completed by bonding a second base component to the first base component to seal the aperture. The package so formed has a cover with a lid, sidewalls and a port extending through the lid. A MEMS device is bonded to the lid and electrically interconnected to electrically conductive features disposed on the first base component. A second base component is bonded to the first base component spanning the aperture.
    Type: Application
    Filed: March 4, 2013
    Publication date: September 4, 2014
    Applicant: UNISEM (M) BERHAD
    Inventors: Rob Protheroe, Alan Evans, Timothy Leung, Ming Xiang Tang, JunHua Guan