Patents by Inventor Kheng Guan Peh

Kheng Guan Peh 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: 7141779
    Abstract: A system and method for emitting and detecting light uses a light emitting device, e.g., a light emitting diode, to emit light and to detect incident light. As an example, the system and method may be used in a digital camera, a camera phone or an illuminated device, such as a liquid crystal display device.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: November 28, 2006
    Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.
    Inventors: Tong Fatt Chew, Gim Eng Chew, Kheng Guan Peh, Yew Cheong Kuan, Kevin John Theseira, Yih Sien Teh, Eit Thian Yap, Kevin Len Li Lim, Joon Chok Lee
  • Patent number: 7115428
    Abstract: A method for fabricating a light-emitting device is disclosed. A die that includes a semiconductor light emitting device is mounted on a carrier, the die having a face through which light is emitted. A mixture of photocurable epoxy and phosphor particles is dispensed on the face in a pattern that covers the face. The dispensed mixture is then irradiated with light to cure the epoxy in a time period that is less than the time period in which the phosphor particles settle. In one embodiment, the photocurable epoxy includes a UV curable epoxy. In one embodiment, the die includes sides through which some of the light is emitted and the mixture is allowed to run down the sides prior to being irradiated.
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: October 3, 2006
    Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.
    Inventors: Thomas Kheng Guan Peh, Chien Chai Lye
  • Patent number: 6682331
    Abstract: The present invention provides a method and system for molding light emitting diode (LED) lamps. A mold frame is provided around each LED chip in an array. A first mold insert is placed in the mold frame and light converting material comprising a carrier and light converting particles is injected into the first mold insert to form a light converting molding around each LED chip. The first mold insert is removed. A second mold insert is placed in the mold frame and lens material is injected into the first mold insert to form a lens molding around the light converting molding for each LED chip.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: January 27, 2004
    Assignee: Agilent Technologies, Inc.
    Inventors: Thomas Kheng Guan Peh, Chien Chai Lye