Patents by Inventor Nan-Cheng Chen

Nan-Cheng Chen 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: 20100283136
    Abstract: A QFN semiconductor package includes a die attach pad; a semiconductor die mounted on the die attach pad; an inner terminal lead disposed adjacent to the die attach pad; a first wire bonding the inner terminal lead to the semiconductor die; an extended, outer terminal lead disposed along periphery of the QFN semiconductor package, wherein the extended, outer terminal lead is disposed beyond a maximum wire length which is provided for a specific minimum pad opening size on the semiconductor die; an intermediary terminal disposed between the inner terminal lead and the extended, outer terminal lead; a second wire bonding the intermediary terminal to the semiconductor die; and a third wire bonding the intermediary terminal to the extended, outer terminal lead.
    Type: Application
    Filed: July 21, 2010
    Publication date: November 11, 2010
    Inventors: Tung-Hsien Hsieh, Nan-Cheng Chen
  • Patent number: 7786557
    Abstract: A quad flat non-lead (QFN) semiconductor package includes a die attach pad having a recessed area; a semiconductor die mounted inside the recessed area of the die attach pad; at least one row of inner terminal leads disposed adjacent to the die attach pad; first wires bonding respective said inner terminal leads to the semiconductor die; at least one row of extended, outer terminal leads disposed along periphery of the QFN semiconductor package; at least one row of intermediary terminals disposed between the inner terminal leads and the extended, outer terminal leads; second wires bonding respective the intermediary terminals to the semiconductor die; and third wires bonding respective the intermediary terminals to the extended, outer terminal leads.
    Type: Grant
    Filed: February 22, 2009
    Date of Patent: August 31, 2010
    Assignee: Mediatek Inc.
    Inventors: Tung-Hsien Hsieh, Nan-Cheng Chen
  • Publication number: 20100213588
    Abstract: A wire bond chip package includes a chip carrier; a semiconductor die having a die face and a die edge, the semiconductor die being mounted on a die attach surface of the chip carrier, wherein a plurality of input/output (I/O) pads are situated in or on the semiconductor die; a rewiring laminate structure on the semiconductor die, the rewiring laminate structure comprising a plurality of redistribution bond pads; a plurality of bond wires interconnecting the redistribution bond pads with the chip carrier; and a mold cap encapsulating at least the semiconductor die and the bond wires.
    Type: Application
    Filed: June 17, 2009
    Publication date: August 26, 2010
    Inventors: Tung-Hsien Hsieh, Nan-Cheng Chen
  • Publication number: 20100207260
    Abstract: An electronic package is provided. The electronic package comprises a die pad having a die attached thereon. A plurality of leads surrounds the die pad and spaced therefrom to define a ring gap therebetween. At least one first common electrode bar is in the ring gap and substantially coplanar to the die pad, in which at least one of the plurality of leads extends to the first common electrode bar. A molding compound partially encapsulates the die pad and the first common electrode bar, such that the bottom surfaces of the die pad and the first common electrode bar are exposed. A length of the first common electrode bar is substantially equal to a predetermined distance between two pads among a plurality of power or ground pads on a side of the die facing the first common electrode bar. An electronic device with the electronic package is also disclosed.
    Type: Application
    Filed: April 23, 2010
    Publication date: August 19, 2010
    Applicant: MEDIATEK INC.
    Inventors: Nan-Cheng Chen, Nan-Jang Chen, Ching-Chih Li
  • Publication number: 20090294938
    Abstract: A flip-chip package includes a package carrier; a semiconductor die having a die face and a die edge, the semiconductor die being assembled face-down to a chip side of the package carrier, and contact pads are situated on the die face; a rewiring laminate structure between the semiconductor die and the package carrier, the rewiring laminate structure including a re-routed metal layer, and at least a portion of the re-routed metal layer projects beyond the die edge; and bumps arranged on the rewiring laminate structure for electrically connecting the semiconductor die with the package carrier.
    Type: Application
    Filed: February 12, 2009
    Publication date: December 3, 2009
    Inventor: Nan-Cheng Chen
  • Publication number: 20090283882
    Abstract: A quad flat non-lead (QFN) semiconductor package includes a die attach pad having a recessed area; a semiconductor die mounted inside the recessed area of the die attach pad; at least one row of inner terminal leads disposed adjacent to the die attach pad; first wires bonding respective said inner terminal leads to the semiconductor die; at least one row of extended, outer terminal leads disposed along periphery of the QFN semiconductor package; at least one row of intermediary terminals disposed between the inner terminal leads and the extended, outer terminal leads; second wires bonding respective the intermediary terminals to the semiconductor die; and third wires bonding respective the intermediary terminals to the extended, outer terminal leads.
    Type: Application
    Filed: February 22, 2009
    Publication date: November 19, 2009
    Inventors: Tung-Hsien Hsieh, Nan-Cheng Chen
  • Publication number: 20090236707
    Abstract: An electronic device with enhanced heat spread. A printed circuit board is disposed in a casing and includes a first metal ground layer, a second metal ground layer, and a metal connecting portion. The first metal ground layer is opposite the second metal ground layer. The metal connecting portion is connected between the first and second metal ground layers. The second metal ground layer is connected to the casing. A chip is electrically connected to the printed circuit board and includes a die and a heat-conducting portion connected to the die and soldered with the first metal ground layer. Heat generated by the chip is conducted to the casing through the heat-conducting portion, first metal ground layer, metal connecting portion, and second metal ground layer.
    Type: Application
    Filed: May 28, 2009
    Publication date: September 24, 2009
    Applicant: MEDIATEK INC.
    Inventors: Nan-Cheng Chen, Chun-Wei Chang, Chao-Wei Tseng
  • Publication number: 20090190706
    Abstract: A substrate module having an embedded phase-locked loop is cooperated with at least one function unit mounted thereon for forming an integrated system. The substrate module includes a base, a multi-layer structure, a built-in circuit unit, and an external circuit unit. The built-in circuit unit is integrated inside the multi-layer structure and the multi-layer structure is formed in the base. The external circuit unit is mounted on the upper surface of the base and is electrically coupled to the built-in circuit unit for jointly forming a phase-locked loop, so as to cooperate with the function unit.
    Type: Application
    Filed: January 25, 2008
    Publication date: July 30, 2009
    Inventors: Chung-Er Huang, Nan-Cheng Chen
  • Patent number: 7561481
    Abstract: Memory controllers and methods of optimizing pad sequences thereof are provided. At least two different preferred trace sequences on printed circuit boards for at least one memory device are first provided. One memory controller is then provided to have a core logic circuit, a plurality of input/output (I/O) devices, and a reorderer. The core logic has I/O terminals. Each I/O device on the single chip has a pad. The reorderer is coupled between the core logic circuit and the input/output devices, programmable to selectively connect the input/output devices to the input/output terminals. The reorderer is later programmed to select and connect a portion of the input/output devices to the input/output terminals such that one of the different preferred trace sequences is substantially supported.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: July 14, 2009
    Assignee: Mediatek Inc.
    Inventors: Nan-Cheng Chen, Chih-Hui Kuo, Jui-Hsing Tseng, Ching-Chih Li, Pei-San Chen
  • Publication number: 20090020859
    Abstract: An electronic package is provided. The electronic package comprises a die pad having a die attached thereon. A plurality of leads surrounds the die pad and spaced therefrom to define a ring gap therebetween. At least one first common electrode bar is in the ring gap and substantially coplanar to the die pad, in which at least one of the plurality of leads extends to the first common electrode bar. A molding compound partially encapsulates the die pad and the first common electrode bar, such that the bottom surfaces of the die pad and the first common electrode bar are exposed. An electronic device with the electronic package is also disclosed.
    Type: Application
    Filed: May 29, 2008
    Publication date: January 22, 2009
    Applicant: MEDIATEK INC.
    Inventors: Nan-Cheng CHEN, Nan-Jang CHEN, Ching-Chih LI
  • Publication number: 20080304352
    Abstract: Memory controllers and methods of optimizing pad sequences thereof are provided. At least two different preferred trace sequences on printed circuit boards for at least one memory device are first provided. One memory controller is then provided to have a core logic circuit, a plurality of input/output (I/O) devices, and a reorderer. The core logic has I/O terminals. Each I/O device on the single chip has a pad. The reorderer is coupled between the core logic circuit and the input/output devices, programmable to selectively connect the input/output devices to the input/output terminals. The reorderer is later programmed to select and connect a portion of the input/output devices to the input/output terminals such that one of the different preferred trace sequences is substantially supported.
    Type: Application
    Filed: June 11, 2007
    Publication date: December 11, 2008
    Applicant: MEDIATEK INC.
    Inventors: Nan-Cheng Chen, Chih-Hui Kuo, Jui-Hsing Tseng, Ching-Chih Li, Pei-San Chen
  • Publication number: 20080080142
    Abstract: An electronic device with enhanced heat spread. A printed circuit board is disposed in a casing and includes a first metal ground layer, a second metal ground layer, and a metal connecting portion. The first metal ground layer is opposite the second metal ground layer. The metal connecting portion is connected between the first and second metal ground layers. The second metal ground layer is connected to the casing. A chip is electrically connected to the printed circuit board and includes a die and a heat-conducting portion connected to the die and soldered with the first metal ground layer. Heat generated by the chip is conducted to the casing through the heat-conducting portion, first metal ground layer, metal connecting portion, and second metal ground layer.
    Type: Application
    Filed: June 15, 2007
    Publication date: April 3, 2008
    Applicant: MEDIATEK INC.
    Inventors: Nan-Cheng Chen, Chun-Wei Chang, Chao-Wei Tseng