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1. WO1996004681 - DIRECT CHIP ATTACH

Publication Number WO/1996/004681
Publication Date 15.02.1996
International Application No. PCT/GB1995/001784
International Filing Date 27.07.1995
Chapter 2 Demand Filed 19.02.1996
IPC
H01L 23/13 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
23Details of semiconductor or other solid state devices
12Mountings, e.g. non-detachable insulating substrates
13characterised by the shape
H01L 23/14 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
23Details of semiconductor or other solid state devices
12Mountings, e.g. non-detachable insulating substrates
14characterised by the material or its electrical properties
H01L 23/24 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
23Details of semiconductor or other solid state devices
16Fillings or auxiliary members in containers, e.g. centering rings
18Fillings characterised by the material, its physical or chemical properties, or its arrangement within the complete device
24solid or gel, at the normal operating temperature of the device
CPC
H01L 2224/45015
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
2224Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
42Wire connectors; Manufacturing methods related thereto
44Structure, shape, material or disposition of the wire connectors prior to the connecting process
45of an individual wire connector
45001Core members of the connector
4501Shape
45012Cross-sectional shape
45015being circular
H01L 2224/45124
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
2224Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
42Wire connectors; Manufacturing methods related thereto
44Structure, shape, material or disposition of the wire connectors prior to the connecting process
45of an individual wire connector
45001Core members of the connector
45099Material
451with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof
45117the principal constituent melting at a temperature of greater than or equal to 400°C and less than 950°C
45124Aluminium (Al) as principal constituent
H01L 2224/45144
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
2224Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
42Wire connectors; Manufacturing methods related thereto
44Structure, shape, material or disposition of the wire connectors prior to the connecting process
45of an individual wire connector
45001Core members of the connector
45099Material
451with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof
45138the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
45144Gold (Au) as principal constituent
H01L 2224/48091
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
2224Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
42Wire connectors; Manufacturing methods related thereto
47Structure, shape, material or disposition of the wire connectors after the connecting process
48of an individual wire connector
4805Shape
4809Loop shape
48091Arched
H01L 2224/48227
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
2224Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
42Wire connectors; Manufacturing methods related thereto
47Structure, shape, material or disposition of the wire connectors after the connecting process
48of an individual wire connector
481Disposition
48151Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
48221the body and the item being stacked
48225the item being non-metallic, e.g. insulating substrate with or without metallisation
48227connecting the wire to a bond pad of the item
H01L 2224/48472
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
2224Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
42Wire connectors; Manufacturing methods related thereto
47Structure, shape, material or disposition of the wire connectors after the connecting process
48of an individual wire connector
484Connecting portions
4847the connecting portion on the bonding area of the semiconductor or solid-state body being a wedge bond
48472the other connecting portion not on the bonding area also being a wedge bond, i.e. wedge-to-wedge
Applicants
  • HAVANT INTERNATIONAL LIMITED [GB/GB]; Langstone Road Havant P.O. Box 6 Hampshire PO9 1SA, GB (AllExceptUS)
  • MEDLOCK, Katherine, Margaret [GB/GB]; GB (UsOnly)
  • COWBURN, Anthony, Richard [GB/GB]; GB (UsOnly)
  • SAVAGE, Clive, Peter [GB/GB]; GB (UsOnly)
  • MORGAN, William, Morris [GB/GB]; GB (UsOnly)
Inventors
  • MEDLOCK, Katherine, Margaret; GB
  • COWBURN, Anthony, Richard; GB
  • SAVAGE, Clive, Peter; GB
  • MORGAN, William, Morris; GB
Agents
  • LAIGHT, Martin, H.; W.H. Beck, Greener & Co. 7 Stone Buildings Lincoln's Inn London WC2A 3SZ, GB
Priority Data
9415296.429.07.1994GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DIRECT CHIP ATTACH
(FR) FIXATION DIRECTE DE PUCES
Abstract
(EN)
The area required for wirebond direct chip attach on a flexible substrate is reduced by recessing the chip. A spacer layer (70) or an identation in a heatsink (20) may be used to recess a chip (10) relative to a flexible substrate (30). This enables shorter wirebonds (40) and less encapsulation (60) to be employed.
(FR)
On réduit la surface requise pour une fixation directe de puces par fil sur un substrat souple en mettant la puce en retrait. Une couche intercalaire (70) ou un renforcement dans un puits thermique (20) peut être utilisé pour mettre une puce (10) en retrait par rapport à un substrat souple (30). Ainsi, on peut utiliser des connexions par fil (40) plus petites et une encapsulation (60) moindre.
Also published as
Latest bibliographic data on file with the International Bureau