Geometry Of Lead Frame (epo) Patents (Class 257/E23.043)
  • Patent number: 7755175
    Abstract: A stack-type semiconductor device according to the present invention includes a circuit board with bonding pads; a first semiconductor chip which includes first electrode pads and is mounted on the circuit board; a second semiconductor chip which includes second electrode pads and is mounted on the first semiconductor chip; a plurality of bonding wires sequentially connecting the bonding pads, the first electrodes and the second electrodes as a whole; and a sealing resin for sealing the first semiconductor chip, the second semiconductor chip and the bonding wires.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: July 13, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katsuhiro Ishida, Ryoji Matsushima
  • Patent number: 7755205
    Abstract: The present invention is a method of manufacturing a semiconductor device, by forming a wiring on or above a wafer so that the wiring is electrically connected to a first electrode disposed on a first surface of the wafer, forming a first resin layer on or above the wafer such that the wiring is disposed between the wafer and the first resin layer, forming an opening in the first resin layer such that the opening overlaps the wiring, forming a conductive member in the opening such that the conductive member being electrically connected to the wiring, forming a second electrode on the conductive member such that the second electrode is electrically connected to the wiring via the conductive member, and separating the wafer into individual elements after the forming of the first resin layer.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: July 13, 2010
    Assignee: Seiko Epson Corporation
    Inventor: Nobuaki Hashimoto
  • Patent number: 7714418
    Abstract: An improved leadframe panel suitable for use in packaging IC dice is described. The described leadframe panel is configured such that the amount of leadframe material that is removed during singulation of the leadframe panel is reduced.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: May 11, 2010
    Assignee: National Semiconductor Corporation
    Inventors: Peng Soon Lim, Terh Kuen Yii, Mohd Sabri Bin Mohamad Zin, Ken Pham
  • Patent number: 7714419
    Abstract: An integrated circuit package system comprising: providing an elevated tiebar; forming a die paddle connected to the elevated tiebar; attaching an integrated circuit die over the die paddle adjacent the elevated tiebar; attaching a shield over the elevated tiebar and the integrated circuit die; and forming an encapsulant over a portion of the elevated tiebar, the die paddle, and the integrated circuit die.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: May 11, 2010
    Assignee: Stats Chippac Ltd.
    Inventors: Zigmund Ramirez Camacho, Lionel Chien Hui Tay, Henry Descalzo Bathan, Guruprasad Badakere Govindaiah
  • Patent number: 7709947
    Abstract: The first external electrode has a main body portion a part of which is buried in a side wall of a case and joining portions protruding from an end of the main body portion toward the inside of the case. Each joining portion of the first external electrode is formed to have a thickness smaller than that of the main body portion, and an end portion of each joining portion is directly joined onto a wiring pattern of the insulating substrate through ultrasonic joining. Therefore, a load and ultrasonic vibration necessary for joining the joining portion onto the wiring pattern can be suppressed, which makes it possible to directly join the first external electrode onto the wiring pattern of the insulating substrate without damaging an insulating member of the insulating substrate.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: May 4, 2010
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventor: Jun Ishikawa
  • Patent number: 7705476
    Abstract: Integrated circuit (IC) packages are described. Each IC package includes a die having an exposed metallic layer deposited on its back surface. Solder joints are arranged to physically and electrically connect I/O pads on the active surface of the die with associated leads. A molding material encapsulates portions of the die, leadframe and solder joint connections while leaving the metallic layer exposed and uncovered by molding material.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: April 27, 2010
    Assignee: National Semiconductor Corporation
    Inventors: Jaime A. Bayan, Anindya Poddar
  • Patent number: 7705444
    Abstract: A semiconductor device in which a semiconductor chip, a lead frame and metal wires for electrically connecting the lead frame are sealed with sealing resin. The lead frame has a plurality of lead terminal portions, a supporting portion for supporting the semiconductor chip, and hanging lead portions supporting the supporting portion. Each of the lead terminal portions adjacent to the hanging lead portion is a chamfered lead terminal portion having, at its head, a chamfered portion formed substantially in parallel with the hanging lead portion so as to avoid interference with the hanging lead portion.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: April 27, 2010
    Assignee: Rohm Co., Ltd.
    Inventor: Kazutaka Shibata
  • Patent number: 7701043
    Abstract: A connecting tape made of insulating material is adhered between a stage unit 21 and a stage unit 22. The stage units 21 and 22 form united stage units by that. Therefore, edge parts 211 and 221 of the stage units 21 and 22 are bound by the connecting tape 41 and of which movements are restricted. The united stage units 21 and 22 are securely supported by support units 31 and 32 and support units 33 and 34. As a result, number of the support units is reduced and inner lead 12 consumed.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: April 20, 2010
    Assignee: Yamaha Corporation
    Inventor: Shinya Ohkawa
  • Patent number: 7687892
    Abstract: A semiconductor package includes a leadframe having first and second level downset lead extensions, a quad flat nonleaded package (QFN) attached to the first level downset lead extension, and a flip chip die attached to the second level downset lead extension. Another embodiment of a semiconductor package includes a leadframe having a lead, a first quad flat nonleaded package (QFN) connected to the lead, and a second quad flat nonleaded package invertly connected to a top surface of the first quad flat nonleaded package, wherein the second quad flat nonleaded package is wirebonded to the lead. A third embodiment of a semiconductor package includes a leadframe having a lead with a first level downset lead extension, a quad flat nonleaded package (QFN) connected to the first level downset lead extension, and a first wirebondable die attached to a top or bottom surface of the quad flat nonleaded package.
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: March 30, 2010
    Assignee: STATS ChipPAC, Ltd.
    Inventors: Emmanuel A. Espiritu, Leo A. Merilo, Rachel L. Abinan, Dario S. Filoteo, Jr.
  • Publication number: 20100072591
    Abstract: An integrated circuit package system includes: forming an anti-peel pad having both a concave ring and an external terminal with the concave ring, having a peripheral wall, surrounding the external terminal; connecting an integrated circuit with the anti-peel pad; and forming an encapsulation over the integrated circuit, the concave ring, and the external terminal with the encapsulation under the peripheral wall.
    Type: Application
    Filed: September 22, 2008
    Publication date: March 25, 2010
    Inventors: Zigmund Ramirez Camacho, Jairus Legaspi Pisigan, Henry Descalzo Bathan
  • Publication number: 20100072585
    Abstract: A clip for a semiconductor device package may include a metal sheet including an array of windows and one or more conductive fingers. Each of the conductive fingers has a first end and a second end. The first end is electrically connected to the metal sheet at one of the windows. Each of the conductive fingers is adapted to provide electrical connection to a top semiconductor region of a semiconductor device or a lead frame at the second end.
    Type: Application
    Filed: September 25, 2008
    Publication date: March 25, 2010
    Applicant: ALPHA & OMEGA SEMICONDUCTOR INCORPORATED
    Inventors: Lei Shi, Zhao Liang, Kai Liu
  • Patent number: 7675148
    Abstract: Provided are a power module having a stacked flip-chip and a method of fabricating the power module. The power module includes a lead frame; a control device part including a control device chip; a power device part including a power device chip and being electrically connected to the lead frame; and an interconnecting substrate of which the control and power device parts are respectively disposed at upper and lower portions, and each of the control and power device chips may be attached to one of the lead frame and the interconnecting substrate using a flip-chip bonding method.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: March 9, 2010
    Assignee: Fairchild Korea Semiconductor Ltd.
    Inventors: Seung-won Lim, O-Seob Jeon, Joon-seo Son, Keun-hyuk Lee, Yun-hwa Choi
  • Patent number: 7671382
    Abstract: A semiconductor device which includes a radiating plate, a wiring patterned layer on the radiating plate via an insulating layer, at least one semiconductor chip mounted on the wiring patterned layer. The semiconductor chip has a surface electrode. The semiconductor device further includes a conductive lead plate electrically connected with the surface electrode of the semiconductor chip, and a resin package of thermoplastic resin having anisotropic linear expansion coefficient varying based upon directions. The resin package covers the wiring patterned layer, the semiconductor chip, the conductive lead plate, and at least a portion of the radiating plate. The conductive lead plate extends in a direction which provides the resin package with the maximum linear expansion coefficient. In the semiconductor device so structured, the warpage of the resin package is reduced both in longitudinal and transverse directions.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: March 2, 2010
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shingo Sudo, Tatsuo Ota, Nobutake Taniguchi, Hiroshi Yoshida, Hironori Kashimoto
  • Patent number: 7663209
    Abstract: Provided are an inlet for an electronic tag comprising an insulating film, antennas each made of a conductor layer and formed over one surface of the insulating film, a slit formed in a portion of each of the antennas and having one end extending toward the outer edge of the antenna, a semiconductor chip electrically connected with each of the antennas via a plurality of bump electrodes, and a resin for sealing the semiconductor chip therewith; and a manufacturing process of the inlet. By the present invention, formation of a thin and highly-reliable inlet for a non-contact type electronic tag can be actualized.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: February 16, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Michio Okamoto, Yuichi Morinaga, Yuji Ikeda, Takeshi Saito
  • Patent number: 7659634
    Abstract: There is provided a lead frame which comprises: a lead frame body comprising a sheet-shaped body made of metal; a groove portion for forming a lead which is formed by a predetermined depth in a lead forming region on a surface of the lead frame body; and a lead portion formed so that the lead portion can protrude from the groove portion onto the surface of the lead frame body, the lead portion being made of material different from material of the lead frame body. A thin type semiconductor device is provided in which the above lead frame is used and after a chip is mounted, the lead frame body is removed by means of etching.
    Type: Grant
    Filed: January 15, 2004
    Date of Patent: February 9, 2010
    Assignee: Panasonic Corporation
    Inventors: Takeshi Kobayashi, Hisao Sugoh
  • Patent number: 7656019
    Abstract: A semiconductor device is disclosed wherein first wiring lines in a first row extend respectively from first connecting portions toward one side of a semiconductor chip, while second wiring lines extend respectively from second connecting portions toward the side opposite to the one side of the semiconductor chip. The reduction in size of the semiconductor device can be attained.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: February 2, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Yasumi Tsutsumi, Takashi Miwa
  • Patent number: 7648903
    Abstract: A semiconductor die includes a plurality of drivers and a plurality of bonding pads. Each driver is formed by a plurality of interconnected modules and has an associated bonding pad to which at least one of the modules of the driver is electrically connected. The modules of some of the drivers are positioned outside of the associated bonding pad toward a periphery of the die. The bonding pads may be arranged, for example, in a double- or triple-staggered pattern around the periphery of the die.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: January 19, 2010
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: James R. Emmert, Charles Evans, Michael Alvin Rencher, Haoran Duan
  • Patent number: 7645638
    Abstract: A stackable multi-chip package system is provided including forming an external interconnect, having a base and a tip, and a paddle; mounting a first integrated circuit die over the paddle; stacking a second integrated circuit die over the first integrated circuit die in a active side to active side configuration; connecting the first integrated circuit die and the base; connecting the second integrated circuit die and the base; and molding the first integrated circuit die, the second integrated circuit die, the paddle, and the external interconnect with the external interconnect partially exposed.
    Type: Grant
    Filed: August 4, 2006
    Date of Patent: January 12, 2010
    Assignee: Stats Chippac Ltd.
    Inventors: Young Cheol Kim, Koo Hong Lee, Jae Hak Yee
  • Publication number: 20090321899
    Abstract: An integrated circuit package system includes: providing a finger lead having a side with an outward exposed area and an inward exposed area separated by a lead cavity; positioning a chip adjacent the finger lead and connected to the finger lead; and a stack encapsulant encapsulating the chip and the finger lead with the outward exposed area and the inward exposed area of the finger lead substantially exposed.
    Type: Application
    Filed: June 25, 2008
    Publication date: December 31, 2009
    Inventors: Byung Tai Do, Linda Pei Ee Chua, Heap Hoe Kuan
  • Patent number: 7635915
    Abstract: Some embodiments provide surface mount devices that include a first electrode comprising a chip carrier part, a second electrode disposed proximate to the chip carrier part, and a casing encasing a portion of the first and second electrodes. The first electrode can extend from the chip carrier part toward a perimeter of the casing, and the second electrode can extend away from the chip carrier part and projects outside of the casing. In extending away from the chip carrier part the first electrode divides into a plurality of leads separated by an aperture that join into a single first joined lead portion with a first width before projecting outside of the casing and maintains the first width outside of the casing. The second electrode can attain a second width prior to projecting outside of the casing and maintains the second width outside the casing.
    Type: Grant
    Filed: April 26, 2006
    Date of Patent: December 22, 2009
    Assignee: Cree Hong Kong Limited
    Inventors: Jian Hui Xie, Siu Cheong Cheng
  • Publication number: 20090302443
    Abstract: A leadframe-based semiconductor package and a leadframe for the package are revealed. The semiconductor package primarily includes parts of the leadframe including one or more first leads, one or more second leads, and a supporting bar disposed between the first leads and the second leads and further includes a chip attached to the first leads, the second leads and the supporting bar, a plurality of bonding wires and an encapsulant. The supporting bar has an extended portion projecting from the first bonding finger and the second bonding finger and connected to a non-lead side of the encapsulant wherein the extended portion has an arched bend to absorb the pulling stresses and to block stress transmission. Cracks caused by delamination of the supporting bar will not be created during trimming the supporting bar along the non-lead side of the encapsulant. Moisture penetration along the cracks of the supporting bar to the die- bonding plane under the chip is desirably prevented.
    Type: Application
    Filed: June 5, 2008
    Publication date: December 10, 2009
    Inventors: Chin-Fa Wang, Wan-Jung Hsieh, Yu-Mei Hsu
  • Patent number: 7629677
    Abstract: Provided is a semiconductor package including a high integration semiconductor chip and having a minimum area to be mounted on a circuit board. The semiconductor package includes a semiconductor chip, a plurality of inner leads, and an encapsulant. The plurality of inner leads include upper and bottom surfaces and are electrically connected to the semiconductor chip. The encapsulant covers the semiconductor chip and the plurality of inner leads. The upper surfaces of the plurality of inner leads are fixed to the encapsulant, portions of the bottom surfaces of the plurality of inner leads are exposed from the encapsulant, and the bottom surfaces of the plurality of inner leads are disposed at a different height from a bottom surface of the encapsulant.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: December 8, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sun-Pil Youn, Jong-Woo Ko, Jeong-Jin Lee
  • Publication number: 20090294934
    Abstract: A clip for a semiconductor device package may include two or more separate electrically conductive fingers electrically connected to each other by one or more electrically conductive bridges. A first end of at least finger is adapted for electrical contact with a lead frame. The bridges are adapted to provide electrical connection to a top semiconductor region of a semiconductor device and may also to provide heat dissipation path when a top surface of the fingers is exposed. A semiconductor device package may include the clip along with a semiconductor device and a lead frame. The semiconductor device may have a first and semiconductor regions on top and bottom surfaces respectively. The clip may be electrically connected to the top semiconductor region at the bridges and electrically connected to the lead frame at a first end of at least one of the fingers.
    Type: Application
    Filed: May 30, 2008
    Publication date: December 3, 2009
    Applicant: ALPHA & OMEGA SEMICONDUCTOR, LTD.
    Inventors: Lei Shi, Kai Liu, Ming Sun
  • Patent number: 7622333
    Abstract: A stackable multi-chip package system is provided including forming an external interconnect having a base and a tip, connecting a first integrated circuit die and the base, stacking a second integrated circuit die over the first integrated circuit die in an active side to active side configuration, connecting the second integrated circuit die and the base, and molding the first integrated circuit die, the second integrated circuit die, and the external interconnect partially exposed.
    Type: Grant
    Filed: August 4, 2006
    Date of Patent: November 24, 2009
    Assignee: Stats Chippac Ltd.
    Inventors: Young Cheol Kim, Koo Hong Lee, Jae Hak Yee, Il Kwon Shim
  • Publication number: 20090283880
    Abstract: The invention relates to leadframes and semiconductor chip package assemblies using leadframes, and to methods for their assembly. A disclosed embodiment of the invention includes a semiconductor package leadframe with a chip mounting surface for receiving a semiconductor chip and a plurality of leadfingers. The leadfingers have a proximal end for receiving one or more wirebond, and a distal end for providing an electrical path from the proximal end. One or more of the leadfingers also has an offset portion at its proximal end for increasing the clearance between the leadfinger and underlying heat spreader, increasing the stiffness of the leadfinger, and increasing leadfinger deflection-resistance and spring-back. The offset is in the direction opposite the plane of a heat spreader thermally coupled to the mounting surface.
    Type: Application
    Filed: May 14, 2008
    Publication date: November 19, 2009
    Inventors: Chien-Te Feng, Yuan-Pao Cheng, Li-Chaio Chou
  • Patent number: 7619307
    Abstract: A leadframe-based semiconductor package and a leadframe for the package are revealed. The semiconductor package primarily includes parts of the leadframe including one or more first leads, one or more second leads, and a supporting bar disposed between the first leads and the second leads and further includes a chip attached to the first leads, the second leads and the supporting bar, a plurality of bonding wires and an encapsulant. The supporting bar has an extended portion projecting from the first bonding finger and the second bonding finger and connected to a non-lead side of the encapsulant wherein the extended portion has an arched bend to absorb the pulling stresses and to block stress transmission. Cracks caused by delamination of the supporting bar will not be created during trimming the supporting bar along the non-lead side of the encapsulant. Moisture penetration along the cracks of the supporting bar to the die-bonding plane under the chip is desirably prevented.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: November 17, 2009
    Assignee: Powertech Technology Inc.
    Inventors: Chin-Fa Wang, Wan-Jung Hsieh, Yu-Mei Hsu
  • Patent number: 7619303
    Abstract: An integrated circuit package is described that includes two dice. The active surface of each die includes a plurality of I/O pads. The active surface of the first die is positioned adjacent first surfaces of the leads of a lead frame such that I/O pads from the first die are arranged adjacent corresponding solder pad surfaces on the first surfaces. Similarly, the active surface of the second die is positioned adjacent second surfaces of the leads opposite the first surfaces such that I/O pads from the second die are arranged adjacent corresponding solder pad surfaces on the second surfaces. A plurality of solder joints are arranged to physically and electrically connect I/O pads from the first or second die to associated adjacent solder pad surfaces on the leads. In this way, a single lead frame can be utilized to package two dice, one on either side of the leads of the leadframe.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: November 17, 2009
    Assignee: National Semiconductor Corporation
    Inventor: Jaime A. Bayan
  • Patent number: 7615859
    Abstract: Provided is a thin semiconductor package comprising a semiconductor chip and a lead frame, the lead frame including a paddle portion configured for mounting the semiconductor chip in a manner that exposes bonding pads within an aperture formed in a center portion of the lead frame and a peripheral terminal pad portion for establishing external contacts. A plurality of bonding wires are used to establish electrical connection between a lower surface of the paddle part and corresponding bonding pads with intermediate leads providing connection to the terminal pad portions. The semiconductor chip, lead frame and bonding wires may then be encapsulated to form a thin semiconductor package having a thickness substantially equal to that of the terminal pad portions. The thin semiconductor packages may, in turn, be used to form multi-chip stack packages using known good semiconductor chips to form a high-density compound semiconductor packages.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: November 10, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Ho Kim, Sung-Hwan Yoon
  • Patent number: 7615853
    Abstract: The present invention provides a chip-stacked package structure with leadframe having multi-piece bus bar, comprising: a leadframe composed of a plurality of inner leads arranged in rows facing each other, a plurality of outer leads, and a die pad, wherein the die pad is provided between the plurality of inner leads arranged in rows facing each other and is vertically distant from the plurality of inner leads; a chip-stacked structure formed with a plurality of chips stacked together and provided on the die pad, the plurality of chips and the plurality of inner leads arranged in rows facing each other being electrically connected with each other; and an encapsulant provided to cover the chip-stacked structure and the leadframe; wherein the leadframe comprises at least a bus bar provided between the plurality of inner leads arranged in rows facing each other and the die pad, the bus bar being formed by multiple pieces.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: November 10, 2009
    Assignees: CHIPMOS Technologies Inc., CHIPMOS Technologies (Bermuda) Ltd.
    Inventors: Geng-Shin Shen, Wu-Chang Tu
  • Patent number: 7615851
    Abstract: An integrated circuit package system comprised by providing a leadframe including leads configured to provide electrical contact between an integrated circuit chip and an external electrical source. Configuring the leads to include outer leads, down set transitional leads, and down set inner leads. Connecting the integrated circuit chip electrically to the down set inner leads. Depositing an encapsulating material to prevent exposure of the down set inner leads.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: November 10, 2009
    Assignee: Stats Chippac Ltd.
    Inventors: Taesung Lee, Jae Soo Lee, Geun Sik Kim
  • Patent number: 7612435
    Abstract: A method of packaging an integrated circuit die having a plurality of I/O pads is described. The method includes positioning the die within a die attach area of a first leadframe that includes a plurality of first leads. The method also includes positioning a second leadframe that includes a plurality of second leads over the first leadframe. The method further includes electrically connecting each of the second leads to both an associated I/O pad and a first lead.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: November 3, 2009
    Assignee: National Semiconductor Corporation
    Inventors: Jaime A. Bayan, Anindya Poddar
  • Patent number: 7612436
    Abstract: Packaged microelectronic devices and methods for manufacturing packaged microelectronic devices are disclosed herein. In one embodiment, a packaged microelectronic device can include a support member and at least one die in a stacked configuration attached to the support member. The support member may include a leadframe disposed longitudinally between first and second ends and latitudinally between first and second sides. The leadframe includes a lead extending between the first end and the first side.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: November 3, 2009
    Assignee: Micron Technology, Inc.
    Inventors: Teck Kheng Lee, Voon Siong Chin, Ai-Chie Wang
  • Patent number: 7608482
    Abstract: A variety of improved arrangements and processes for packaging integrated circuits are described. More particularly, methods of encapsulating dice in lead frame based IC packages are described that facilitate covering some portions of the bottom surface of the lead frame while leaving other portions of the bottom surface of the lead frame exposed. In some embodiments, a method of encapsulating integrated circuits mounted on a lead frame panel is described. The lead frame panel includes a plurality of leads having associated contacts and supports. A shim having a plurality of cavities is positioned under the lead frame such that the cavities are adjacent to the supports and not adjacent to the contacts. During the encapsulation process, encapsulant material flows under the supports such that the bottom surfaces of the supports are electrically insulated by the encapsulant while the bottom surfaces of the contacts remain exposed.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: October 27, 2009
    Assignee: National Semiconductor Corporation
    Inventor: Jaime Bayan
  • Patent number: 7605451
    Abstract: In various embodiments, semiconductor components and methods to manufacture semiconductor components are disclosed. In one embodiment, a method to manufacture semiconductor components includes attaching multiple heat spreaders to a semiconductor wafer. Other embodiments are described and claimed.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: October 20, 2009
    Assignee: HVVi Semiconductors, Inc
    Inventor: Dan Moline
  • Publication number: 20090243056
    Abstract: A chip package having asymmetric molding includes a lead frame, a chip, an adhesive layer, bonding wires and a molding compound. The lead frame includes a turbulent plate and a frame body having inner lead portions and outer lead portions. The turbulent plate is bended downwards to form a concave portion. The first end of the turbulent plate is connected to the frame body, and the second end is lower than the inner lead portions. The chip is fixed under the inner lead portions through the adhesive layer. The bonding wires are connected between the chip and the inner lead portions. The molding compound encapsulates the chip, the bonding wires, and the turbulent plate. The ratio between the thickness of the molding compound over and under the concave portion is larger than 1. The thickness of the molding compound under and over the outer lead portions is not equal.
    Type: Application
    Filed: June 8, 2009
    Publication date: October 1, 2009
    Applicants: ChipMOS Technologies Inc., ChipMOS Technologies (Bermuda) Ltd.
    Inventors: Wu-Chang Tu, Geng-Shin Shen
  • Patent number: 7595547
    Abstract: A semiconductor package includes a leadframe which is cup-shaped and holds a semiconductor die. The leadframe is in electrical contact with a terminal on one side of the die, and the leads of the leadframe are bent in such a way that portions of the leads are coplanar with the other side of the die, which also contains one or more terminals. A plastic capsule is formed around the leadframe and die.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: September 29, 2009
    Assignee: Vishay-Siliconix
    Inventors: Mike Chang, King Owyang, Yueh-Se Ho, Y. Mohammed Kasem, Lixiong Luo, Wei-Bing Chu
  • Patent number: 7589412
    Abstract: One of the aspects of the present invention is to provide a semiconductor device, which includes a base plate, an insulating substrate on the base plate, and a wiring patterned layer on the insulating substrate. Also, it includes at least one semiconductor chip bonded on the wiring patterned layer, the semiconductor chip having a surface electrode. A main terminal is connected via a conductive adhesive layer onto at least either one of the surface electrode and the wiring patterned layer. Also, a resin package covers the insulating substrate, the wiring patterned layer, the semiconductor chip, the conductive adhesive layer, and at least a portion of the main terminal.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: September 15, 2009
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hironori Kashimoto, Tatsuo Ota, Shingo Sudo
  • Patent number: 7589404
    Abstract: A semiconductor device includes: a semiconductor element; a die pad with the semiconductor element mounted thereon; a plurality of electrode terminals each having a connecting portion electrically connected with the semiconductor element; and a sealing resin for sealing the semiconductor element, the die pad and the electrode terminals so that a surface of each electrode terminal on an opposite side from a surface having the connecting portion is exposed as an external terminal surface. A recess having a planar shape of a circle is formed on the surface of each electrode terminal with the connecting portion, and the recess is arranged between an end portion of the electrode terminal exposed from an outer edge side face of the sealing resin and the connecting portion. While a function of the configuration for suppressing the peeling between the electrode terminal and the sealing resin can be maintained by mitigating an external force applied to the electrode terminal, the semiconductor device can be downsized.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: September 15, 2009
    Assignee: Panasonic Corporation
    Inventors: Kenichi Itou, Noboru Takeuchi, Shigetoyo Kawakami, Toshiyuki Fukuda
  • Publication number: 20090224380
    Abstract: A lead frame with downset baffle paddles and a semiconductor package utilizing the same are revealed. The lead frame primarily comprises a plurality of leads formed oil a first plane, a baffle paddle formed on a second plane in parallel, and an internal tie bar formed between the first plane and the second plane. The internal tie bar has at least two or more windings such as “S” shaped to flexibly connect the baffle paddle to an adjacent one of the leads. Therefore, the internal tie bar can reduce the shifting and twisting of the connected lead during the formation of the downset of the baffle paddle.
    Type: Application
    Filed: March 4, 2008
    Publication date: September 10, 2009
    Inventors: Chin-Fa WANG, Wan-Jung Hsieh, Yu-Mei Hsu
  • Publication number: 20090212404
    Abstract: A leadframe for supporting a semiconductor chip, the leadframe including a die pad having a first major surface and an opposing second major surface defining a thickness and having at least one perimeter edge, and an opening spaced from the at least one perimeter edge and extending through the thickness of the die pad between the first and second major surfaces. A vent extends from the at least one perimeter edge to the opening so that the opening is in communication with the at least one perimeter edge.
    Type: Application
    Filed: February 27, 2008
    Publication date: August 27, 2009
    Applicant: INFINEON TECHNOLOGIES AG
    Inventors: Lee Teck Sim, Yong Wae Chet, Bernd Goller, Lim Boon Kian
  • Patent number: 7579676
    Abstract: A leadless leadframe has a plurality of bottom leads and a plurality of top soldering pads formed in different layers. After encapsulation and before solder ball placement, a half-etching process is performed to remove the bottom leads to make the top soldering pads electrically isolated, exposed and embedded in the encapsulant for solder ball placement where the soldering area of the top soldering pads is defined without the need of solder mask(s) to solve the diffusion of solder balls on the leads during reflow.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: August 25, 2009
    Assignees: ChipMOS Technologies (Bermuda) Ltd., ChipMOS Technologies Inc.
    Inventor: Hung-Tsun Lin
  • Publication number: 20090194858
    Abstract: The present invention relates to a hybrid carrier and a method for making the same. The hybrid carrier has a plurality of interconnection leads, so that a wire bondable semiconductor device or a flip chip die apparatus can be placed on the hybrid carrier, and is electrically connected to die paddle and bond fingers. Also, it is easy to dispose a semiconductor device on the hybrid carrier and easy to electrically bond the hybrid carrier and the semiconductor device. Therefore, the hybrid carrier and the method for making the same can be applied to an area array metal CSP easily, and the method of the present invention is simple, so the production cost can be reduced.
    Type: Application
    Filed: February 5, 2008
    Publication date: August 6, 2009
    Applicant: ADVANCED SEMICONDUCTOR ENGINEERING, INC.
    Inventors: Sung-Ho Youn, Hyeong-No Kim
  • Patent number: 7566954
    Abstract: In a bonding configuration for a semiconductor device package, the bonding angles of the bonding wires are maintained within acceptable limits, without causing an increase in the chip die size, and without necessitating the use of the corner rule. In this manner, the occurrence of shorting between adjacent bonding wires can be mitigated or eliminated, and device net die count during fabrication can be increased.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: July 28, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyung Lae Jang, Hee Seok Lee, Heung Kyu Kwon
  • Patent number: 7563647
    Abstract: An integrated circuit package system with interconnect support is provided including providing an integrated circuit, forming an electrical interconnect on the integrated circuit, forming a contact pad having a chip support, and coupling the integrated circuit to the contact pad by the electrical interconnect, with the integrated circuit on the chip support.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: July 21, 2009
    Assignee: Stats Chippac Ltd.
    Inventors: Henry D. Bathan, Il Kwon Shim, Jeffrey D. Punzalan, Zigmund Ramirez Camacho
  • Patent number: 7563648
    Abstract: A lead frame (52, 100, 112) for a semiconductor device (die) package (50, 102, 110) is described. Each of the leads (60) in the lead frame (52, 100, 112) includes an interposer (64) having one end (66) disposed proximate the outer face (58) of the package (50, 102, 110) and another end (68) disposed proximate the die (14). Extending from opposite ends of the interposer (64) are a board connecting post (70) and a support post (74). A bond site (78) is formed on a surface of the interposer (64) opposite the support post (74). Each of the leads (60) is electrically connected to an associated input/output (I/O) pad (80) on the die (14) via wirebonding, tape bonding, or flip-chip attachment to the bond site (78). Where wirebonding is used, a wire electrically connecting the I/O pad (80) to the bond site (78) may be wedge bonded to both the I/O pad (80) and the bond site (78). The support post (74) provides support to the end (68) of the interposer (64) during the bonding and coating processes.(FIG. 3).
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: July 21, 2009
    Assignee: Unisem (Mauritius) Holdings Limited
    Inventors: Shafidul Islam, Daniel K. Lau, Romarico S. San Antonio, Anang Subagio, Michael H. McKerreghan, Edmunda G-O. Litilit
  • Patent number: 7550829
    Abstract: A package for an electronic component including a chip mounting area mounting a semiconductor chip in a hollow part of a metal plate and a plurality of connection electrodes to be connected to a substrate. The plurality of connection electrodes are formed in opposite sides of the rectangular metal plate and arranged asymmetrically with respect to a perpendicular bisector of the opposite sides.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: June 23, 2009
    Assignee: NEC Electronics Corporation
    Inventor: Takekazu Tanaka
  • Patent number: 7550855
    Abstract: A plurality of vertically spaced-apart microsprings are provided to increase microspring contact force, contact area, contact reliability, and contact yield. The microspring material is deposited, either as a single layer or as a composite of multiple sub layers, to have a tailored stress differential along its cross-section. A lower microspring may be made to push up against an upper microspring to provide increased contact force, or push down against a substrate to ensure release during manufacture. The microsprings may be provided with similar stress differentials or opposite stress differentials to obtain desired microspring profiles and functionality. Microsprings may also be physically connected at their distal ends for increased contact force. The microsprings may be formed of electrically conductive material or coated with electrically conductive material for probe card and similar applications.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: June 23, 2009
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Thomas Hantschel, Eugene M. Chow
  • Publication number: 20090152710
    Abstract: Quad Flat No-Lead (QFN) packages are provided. An embodiment of a QFN package includes a semiconductor chip including an active surface and an inactive surface, a plurality of leads, a plurality of wire bonds configured to couple the plurality of leads to the semiconductor chip, and a mold material including a mounting side and having a perimeter. The active surface is oriented toward the mounting side, the plurality of wire bonds are disposed between the active surface and the mounting side within the mold material, and the plurality of leads are exposed on the mounting side and are at least partially encapsulated within the perimeter of the mold material.
    Type: Application
    Filed: January 8, 2009
    Publication date: June 18, 2009
    Applicant: Freescale Semiconductor, Inc.
    Inventors: James J. Wang, William G. McDonald
  • Publication number: 20090140403
    Abstract: Embodiments provide an electronic device including a leadframe, a chip attached to the leadframe, and encapsulation material disposed over a portion of the leadframe. The leadframe includes a first main face opposite a second main face and a plurality of edges extending between the first and second main faces. At least one of the plurality of edges includes a first profiled element and a second profiled element different than the first profiled element. The encapsulation material is disposed over the chip and the plurality of edges of the leadframe.
    Type: Application
    Filed: November 30, 2007
    Publication date: June 4, 2009
    Applicant: Infineon Technologies AG
    Inventors: Boon Kian Lim, Yang Hong Heng
  • Patent number: 7541664
    Abstract: Provided is a lead frame having an improved wire bonding property of inner leads and an improved soldering property of outer leads and preventing defects with high producing yield, and a method of manufacturing the lead frame. The lead frame includes a plurality of inner leads formed with predetermined intervals between them; and a plurality of outer leads extended from the inner leads in length directions of the inner leads, each of which has an end portion overlapped with the inner lead and coupled thereto and the other end connected to neighboring outer lead by a supporting portion.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: June 2, 2009
    Assignee: Samsung Techwin Co., Ltd.
    Inventors: Soo-bong Lee, Jung-Do Kim, Woo-suk Choi, Eun-hee Kim