摘要:
The invention relates to a method for wire bonding and a method for the production of a bonding connection. A bonding point (2, 20) is heated by means of a laser beam (4) originating from a laser. The arrangement (1) comprises a wedge-wedge-ultrasound-bonding device with a bonding needle (5), a copper or aluminium bonding wire guide (7) and a copper or aluminium wire (8) for a wedge-wedge-ultrasound-bonding method and at least one of the bonding points (2, 20) displays a hard metal covering (6).
摘要:
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).
摘要:
A method is disclosed for on-line doping of metallic connecting wire for use in integrated circuits. The method comprises the steps of: providing a bonding apparatus (70) comprising a bonding tool (40), said bonding tool having a tip (44) through which a capillary (42) runs, such that metallic connecting wire (20) may be fed through said tip (44); extending an end of the connecting wire (20) a predetermined length beyond the tip (44) of said bonding tool (40); and forming a doped area on the end of said wire by: bringing the end of said wire into contact with dopant material (52), and applying predetermined amounts of pressure, heat, and ultrasonic vibration to said end of the wire (20) for a predetermined amount of time.
摘要:
A method of bonding an electrical conductor (22,23) to a contact (25) of an integrated circuit (IC) device comprises bonding the conductor (22,23) to a support member (20) and to a contact (25) of the IC device. The conductor (22,23) is then severed to release the IC device and conductor (22,23) from the support (20). This allows the IC device to be tested while connected to the support member (20) and provides it with a conductor lead (22,23) for connection to a carrier for use.
摘要:
An apparatus in the form of a multilayered pad (P1,P2) is provided which has an adhesive layer (32) over at least part of one face which is responsive to heat so that the pad can be bonded by heat to the surface of a printed circuit board. The other face of the pad includes a layer of stainless steel to which nickel wire can be stitched, or welded. A method according to the invention includes cutting a sheet (46) of pads into individual pads (P1,P2), placing a plurality of pads, adhesive side down, on the surface of a printed circuit board, heating the pads (P1,P2) to bond them to the board, and stitching (welding) wire (24) to a succession of pads (p1,P2) to complete a series of new connections. Some pads (P1) include plated-through-holes (40) enabling connections to be completed from the pads to existing circuitry on the boards and to components mounted in the holes by the use of flow soldering techniques.
摘要:
An apparatus (100) and method for bonding a wire, such as a flat rectangular cross sectioned ribbon wire (104), to a workpiece (106) in semiconductor device fabrication. The wire is fed through a passageway (116) of an ultrasonic bond capillary (102) and clamped against an engagement surface (120) of the bond capillary via a clamping jaw (118) operably coupled to the bond capillary. The wire is bonded to the workpiece along a bonding surface (112) of the bond capillary and penetrated, at least partially, between the bonding surface and the engagement surface of the bond capillary by a cutting tool (124). The cutting tool may comprise an elongate member (126) positioned between the bonding surface and engagement surface, and may have a cutting blade (128) positioned at a distal end (130) thereof. The cutting tool may further comprise a ring cutter, wherein the ribbon wire passes through a ring having a cutting surface defined about an inner diameter thereof.
摘要:
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).
摘要:
The invention concerns a method of testing connections produced using ultrasonic wire bonding, the method calling for the strength of the connection to be measured and taken as the parameter determining the quality of the bond. The invention proposes that the speed, or change with time, of the deformation of the wire and the change with time of the bond wedge size are measured during the bonding operation as the parameters determining the strength of the connection and compared with predefined quality-standard data stored in a process-control module. This enables the strength of each individual connection to be tested without interrupting the process or wasting time.
摘要:
A gold alloy wire for wedge bonding, comprising 1 to 100 parts per million by weight of calcium (Ca), the remainder being gold and inevitable impurities, said gold alloy wire having a tensile strength of not less than 33.0 kg/mm 2 and an elongation of 1 to 3%. The gold alloy wire has a gold purity of not less than 99.9% or further comprises 0.2 to 5.0% by weight of at least one element selected from the group consisting of Pd, Ag and Pt.
摘要翻译:一种用于楔形粘合的金合金丝,其包含1至100重量份的钙(Ca),余量为金和不可避免的杂质,所述金合金丝的拉伸强度不小于33.0kg / mm 2 伸长率为1〜3%。 金合金丝的金纯度为99.9%以上,进一步含有0.2〜5.0重量%的选自Pd,Ag,Pt的至少一种元素。