Patents by Inventor Keat Chuan Ng

Keat Chuan Ng 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: 8120056
    Abstract: An electronic assembly includes a Light Emitting Diode (LED) mounted on a top surface of a heat spreader, at least two electrical contacts co-planar with the heat spreader, and at least one heat slug mounted on the top surface of the heat spreader, where the heat slug is made of high thermal conductive plastic.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: February 21, 2012
    Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.
    Inventors: Lig Yi Yong, Kean Loo Keh, Keat Chuan Ng
  • Patent number: 8115385
    Abstract: A light source having a lead frame, a body, and a plurality of dies, each die having an LED thereon is disclosed. The body includes a top surface, a bottom surface and a plurality of side surfaces. The lead frame includes first, second, and third sections, the first section includes a die mounting area having a first protrusion that passes through the body and terminates in a pad on the bottom surface. The second and third sections each include a protrusion that is bent to form first and second leads that run along one of the side surfaces. Each die is bonded to the die mounting area such that a first contact is electrically connected to the die mounting area, and a second contact is connected to one of the second and third sections. The first protrusion of the first section provides improved heat transfer.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: February 14, 2012
    Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.
    Inventors: Aizar Abdul Karim Norfidathul, Chiau Jin Lee, Kheng Leng Tan, Keat Chuan Ng, Kiam Soon Ong
  • Publication number: 20110176573
    Abstract: In an embodiment, the invention provides a SLCC package comprising first and second electrically conductive terminals, a polysiloxane and glass fiber structural body, a light source and a polysiloxane encapsulant. The first and second electrically conductive terminals are attached to the polysiloxane and glass fiber structural body. The light source is electrically connected to the first and second electrically conductive terminals. The polysiloxane and glass fiber structural body has a cavity that contains at least a portion of the polysiloxane encapsulant.
    Type: Application
    Filed: March 30, 2011
    Publication date: July 21, 2011
    Applicant: Avago Technologies ECBU IP (Singapore) Pte. Ltd.
    Inventors: Kheng Leng Tan, Keat Chuan Ng, Kee Hon Lee
  • Publication number: 20110140133
    Abstract: The light intensity emitted from a package is increased by adjusting a portion of the package encapsulant so that light impacting the side walls of the adjusted encapsulant portion will encounter total internal reflection (TIR) with the reflected light directed toward the top surface of the package. The adjusted portion of the package is positioned so that air can be used as the second (exterior) medium with the critical TIR angle being such that light emitted from a light source (such as from an LED die) will be directed primarily so as to escape the package from the top surface as opposed to being scattered internal to the package. In one embodiment, a lower portion of the encapsulant is surrounded by a casing to inwardly direct light from the light source that impacts the side of the encapsulant with an angle less than the critical TIR angle.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 16, 2011
    Applicant: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Keat Chuan Ng, Wei Liam Loo, Chiau Jin Lee, Yean Chon Yaw
  • Publication number: 20110089460
    Abstract: An electronic assembly includes a Light Emitting Diode (LED) mounted on a top surface of a heat spreader, at least two electrical contacts co-planar with the heat spreader, and at least one heat slug mounted on the top surface of the heat spreader, where the heat slug is made of high thermal conductive plastic.
    Type: Application
    Filed: October 19, 2009
    Publication date: April 21, 2011
    Applicant: Avago Technologies ECBU IP (Singapore) Pte. Ltd.
    Inventors: Lig Yi Yong, Kean Loo Keh, Keat Chuan Ng
  • Publication number: 20110079802
    Abstract: Embodiments of light sources are disclosed herein. An embodiment of the light source comprises a lead frame having a first side and a second side. A hole extends through the lead frame between the first side and the second side. An adhesive is located in the hole and extends beyond the hole, wherein the adhesive extends beyond the diameter of the hole on the first side and the second side of the first lead frame. A light emitter adhered to the adhesive proximate the first side of the first lead frame.
    Type: Application
    Filed: October 5, 2009
    Publication date: April 7, 2011
    Applicant: Avago Technologies ECBU IP (Singapore) Pte. Ltd.
    Inventors: Keat Chuan Ng, Lig Yi Yong, Kheng Leng Tan
  • Publication number: 20110044062
    Abstract: An embodiment of a light source comprises a first lead and a second lead. The first lead comprises a first mounting surface wherein a first light emitter is connectable to the first mounting surface, a support member attached to the first mounting surface, a conductor portion attached to the support member, and at least one tab extending from the first mounting surface, the at least one tab being used to hold the first lead during fabrication. The second lead is second lead located adjacent the first lead and comprises a second mounting surface wherein a second light emitter is connectable to the second mounting surface, at least two support members attached to the second mounting surface, and a conductor portion attached to each of the support members.
    Type: Application
    Filed: August 19, 2009
    Publication date: February 24, 2011
    Applicant: AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD.
    Inventors: Keat Chuan Ng, Chiau Jin Lee, Kheng Leng Tan, Aizar Abdul Karim Norfidathul
  • Publication number: 20100320485
    Abstract: A light source having a lead frame, a body, and a plurality of dies, each die having an LED thereon is disclosed. The body includes a top surface, a bottom surface and a plurality of side surfaces. The lead frame includes first, second, and third sections, the first section includes a die mounting area having a first protrusion that passes through the body and terminates in a pad on the bottom surface. The second and third sections each include a protrusion that is bent to form first and second leads that run along one of the side surfaces. Each die is bonded to the die mounting area such that a first contact is electrically connected to the die mounting area, and a second contact is connected to one of the second and third sections. The first protrusion of the first section provides improved heat transfer.
    Type: Application
    Filed: August 30, 2010
    Publication date: December 23, 2010
    Applicant: AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD.
    Inventors: Aizar Abdul Karim Norfidathul, Chiau Jin Lee, Kheng Leng Tan, Keat Chuan Ng, Kiam Soon Ong
  • Publication number: 20100289055
    Abstract: In an embodiment, the invention provides a SLCC package comprising first and second electrically conductive terminals, a polysiloxane and glass fiber structural body, a light source and a polysiloxane encapsulant. The first and second electrically conductive terminals are attached to the polysiloxane and glass fiber structural body. The light source is electrically connected to the first and second electrically conductive terminals. The polysiloxane and glass fiber structural body has a cavity that contains at least a portion of the polysiloxane encapsulant.
    Type: Application
    Filed: May 14, 2009
    Publication date: November 18, 2010
    Applicant: AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD.
    Inventors: Kheng Leng Tan, Keat Chuan Ng, Kee Hon Lee
  • Publication number: 20100264450
    Abstract: Embodiments of a light source are disclosed herein. An embodiment of the light source comprises a first terminal and a second terminal. The first terminal comprises a first terminal first portion and a first terminal second portion, wherein at least a portion of the first terminal second portion is located on a first plane, the first terminal second portion comprising at least two contacts separated by a space. A second terminal comprises a second terminal first portion and a second terminal second portion. The second terminal first portion is located proximate the first terminal first portion. The second terminal second portion is located substantially on the first plane and in the space. A light emitter is affixed to the first terminal first portion, the light emitter is electrically connected to the first terminal first portion. A connection exists between the light emitter and the second terminal first portion.
    Type: Application
    Filed: April 20, 2009
    Publication date: October 21, 2010
    Applicant: Avago Technologies ECUBU IP (Singapore) Pte. Ltd.
    Inventors: Aizar Abdul Karim Norfidathul, Chiau Jin Lee, Keat Chuan Ng
  • Patent number: 7800304
    Abstract: A light source having a lead frame, a body, and a plurality of dies, each die having an LED thereon is disclosed. The body includes a top surface, a bottom surface and a plurality of side surfaces. The lead frame includes first, second, and third sections, the first section includes a die mounting area having a first protrusion that passes through the body and terminates in a pad on the bottom surface. The second and third sections each include a protrusion that is bent to form first and second leads that run along one of the side surfaces. Each die is bonded to the die mounting area such that a first contact is electrically connected to the die mounting area, and a second contact is connected to one of the second and third sections. The first protrusion of the first section provides improved heat transfer.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: September 21, 2010
    Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.
    Inventors: Aizar Abdul Karim Norfidathul, Chiau Jin Lee, Kheng Leng Tan, Keat Chuan Ng, Kiam Soon Ong
  • Patent number: 7547583
    Abstract: A packaged circuit and method for packaging an integrated circuit are disclosed. The packaged circuit has a lead frame, an integrated circuit chip, and an encapsulating layer. The lead frame has first and second sections, the first section including a lateral portion, a chip mounting area and a first extension. The integrated circuit chip is mounted in the chip mounting area and is in thermal contact with the chip mounting area. The encapsulating layer has top, bottom, and first and second side surfaces. The first extension is bent to provide a first heat path from the chip mounting area to the bottom surface. The heat path connects the heat chip mounting area to the bottom surface without passing through the first and second side surfaces and provides a heat path that has less thermal resistance than the heat path through either the lateral portion or the second section.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: June 16, 2009
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Kee Yean Ng, Hui Peng Koay, Chiau Jin Lee, Kheng Leng Tan, Wei Liam Loo, Keat Chuan Ng, Aizar Abdul Karim Norfidathul
  • Publication number: 20090129085
    Abstract: An exemplary embodiment of an optical device may include a lead frame with a plurality of leads and a reflector housing formed around the lead frame. The reflector housing includes a first end face and a second end face and a peripheral sidewall extending between the first end face and the second end face. The reflector housing includes a first pocket with a pocket opening in the first end face and a second pocket with a pocket opening in the second end face. At least one LED die is mounted in the first pocket of the reflector housing, and a light transmitting encapsulant is disposed in the first pocket and encapsulating the at least one LED die.
    Type: Application
    Filed: November 16, 2007
    Publication date: May 21, 2009
    Applicant: AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD.
    Inventors: Abdul Karim Norfidathul Aizar, Chiau Jin Lee, Keat Chuan Ng, Kiam Soon Ong, Kheng Leng Tan
  • Patent number: 7524087
    Abstract: An exemplary embodiment of an optical device may include a lead frame with a plurality of leads and a reflector housing formed around the lead frame. The reflector housing includes a first end face and a second end face and a peripheral sidewall extending between the first end face and the second end face. The reflector housing includes a first pocket with a pocket opening in the first end face and a second pocket with a pocket opening in the second end face. At least one LED die is mounted in the first pocket of the reflector housing, and a light transmitting encapsulant is disposed in the first pocket and encapsulating the at least one LED die.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: April 28, 2009
    Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.
    Inventors: Abdul Karim Norfidathul Aizar, Chiau Jin Lee, Keat Chuan Ng, Kiam Soon Ong, Kheng Leng Tan
  • Patent number: 7514724
    Abstract: A light source having a die carrier, a lead frame, and an insulating body is disclosed. The die carrier includes a die mounting section connected to a heat transfer section. The die mounting section includes a die mounting area having a lead pad opening contained within the die mounting area. The lead frame includes a lead pad. An electrically insulating material fills the voids between the die carrier and the lead frame to maintain the lead frame and die carrier such that a surface of the heat transfer section is exposed on a surface of the body, the lead pad is positioned in the lead pad opening, and the die carrier is electrically isolated from the lead frame. A plurality of dies are attached to the die mounting area and connected to the lead pad.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: April 7, 2009
    Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.
    Inventors: Keat Chuan Ng, Chiau Jin Lee
  • Publication number: 20080273340
    Abstract: A light source having a die carrier, a lead frame, and an insulating body is disclosed. The die carrier includes a die mounting section connected to a heat transfer section. The die mounting section includes a die mounting area having a lead pad opening contained within the die mounting area. The lead frame includes a lead pad. An electrically insulating material fills the voids between the die carrier and the lead frame to maintain the lead frame and die carrier such that a surface of the heat transfer section is exposed on a surface of the body, the lead pad is positioned in the lead pad opening, and the die carrier is electrically isolated from the lead frame. A plurality of dies are attached to the die mounting area and connected to the lead pad.
    Type: Application
    Filed: March 23, 2007
    Publication date: November 6, 2008
    Inventors: Keat Chuan Ng, Chiau Jin Lee
  • Publication number: 20080170391
    Abstract: A light source having a lead frame, a body, and a plurality of dies, each die having an LED thereon is disclosed. The body includes a top surface, a bottom surface and a plurality of side surfaces. The lead frame includes first, second, and third sections, the first section includes a die mounting area having a first protrusion that passes through the body and terminates in a pad on the bottom surface. The second and third sections each include a protrusion that is bent to form first and second leads that run along one of the side surfaces. Each die is bonded to the die mounting area such that a first contact is electrically connected to the die mounting area, and a second contact is connected to one of the second and third sections. The first protrusion of the first section provides improved heat transfer.
    Type: Application
    Filed: January 12, 2007
    Publication date: July 17, 2008
    Inventors: Aizar Abdul Karim Norfidathul, Chiau Jin Lee, Kheng Leng Tan, Keat Chuan Ng, Kiam Soon Ong
  • Publication number: 20080153190
    Abstract: A packaged circuit and method for packaging an integrated circuit are disclosed. The packaged circuit has a lead frame, an integrated circuit chip, and an encapsulating layer. The lead frame has first and second sections, the first section including a lateral portion, a chip mounting area and a first extension. The integrated circuit chip is mounted in the chip mounting area and is in thermal contact with the chip mounting area. The encapsulating layer has top, bottom, and first and second side surfaces. The first extension is bent to provide a first heat path from the chip mounting area to the bottom surface. The heat path connects the heat chip mounting area to the bottom surface without passing through the first and second side surfaces and provides a heat path that has less thermal resistance than the heat path through either the lateral portion or the second section.
    Type: Application
    Filed: March 7, 2008
    Publication date: June 26, 2008
    Applicant: Avago Technologies General IP (Singapore) Pte. Ltd
    Inventors: Kee Yean Ng, Hui Peng Koay, Chiau Jin Lee, Kheng Leng Tan, Wei Liam Loo, Keat Chuan Ng, Aizar Abdul Karim Norfidathul
  • Patent number: 7365407
    Abstract: A packaged circuit and method for packaging an integrated circuit are disclosed. The packaged circuit has a lead frame, an integrated circuit chip, and an encapsulating layer. The lead frame has first and second sections, the first section including a lateral portion, a chip mounting area and a first extension. The integrated circuit chip is mounted in the chip mounting area and is in thermal contact with the chip mounting area. The encapsulating layer has top, bottom, and first and second side surfaces. The first extension is bent to provide a first heat path from the chip mounting area to the bottom surface. The heat path connects the heat chip mounting area to the bottom surface without passing through the first and second side surfaces and provides a heat path that has less thermal resistance than the heat path through either the lateral portion or the second section.
    Type: Grant
    Filed: May 1, 2006
    Date of Patent: April 29, 2008
    Assignee: Avago Technologies General IP Pte Ltd
    Inventors: Kee Yean Ng, Hui Peng Koay, Chiau Jin Lee, Kheng Leng Tan, Wei Liam Loo, Keat Chuan Ng, Alzar Abdul Karim Norfidathul
  • Patent number: D576966
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: September 16, 2008
    Assignee: Avago Technologies General IP (Singapore) Pte Ltd.
    Inventors: Keat Chuan Ng, Chiau Jin Lee, Kheng Leng Tan, Wei Liam Loo