摘要:
A die package having mixed impedance leads where a first lead has a first metal core (130), and a dielectric layer surrounding the first metal core (130), and a second lead has a second metal core, and a second dielectric layer (132) surrounding the second metal core, with the dielectric thicknesses differing from each other. A method of making a die package having leads with different impedances formed by cleaning die substrate connection pads (162), connecting the die package to the die substrate connection pads via a first wirebond having a first diameter metal core (164), depositing at least one layer of dielectric on the wirebond metal core (170), metalizing the at least one layer of dielectric (174), connecting the die package to the die substrate connection pads via a second wirebond having a second diameter metal core, depositing at least one layer of dielectric on the second wirebond second diameter metal core, and metalizing the at least one layer of dielectric on the second diameter metal core, such that the first wirebond has a different impedance than the second wirebond.
摘要:
Consistent with an example embodiment, there is an integrated circuit (IC) device in a packaging having electrically insulated connections. The IC device comprises a semiconductor device (100) mounted onto a die attachment area (10); the semiconductor device has a plurality of bonding pads (20a, 25a, 30a, 35a). A lead frame having a plurality of bonding fingers (20b, 25b, 30b, 35b) surrounds the die attachment area. A plurality of mutually isolated connection conductors (25d, 30d, 40, 50) having respective first ends are attached to respective bonding pads on the semiconductor device and the plurality of mutually isolated connection conductors having respective second respective second ends are attached to respective bonding fingers of the lead frame. An insulating material (45) coats at least a portion of the plurality of mutually isolated connection conductors. The mutually isolated connection conductors may include a bond wire (40,50) for the signal connection and a conductive strap (25d,30d) for the voltage reference connection. The insulating material (45) coating the bond wires reduces the likelihood of short circuits during encapsulation.
摘要:
An electrically conductive base wire is coated with an insulating film of a polymeric material such as aromatic polyester, polyimide, polyether ether ketone, polyamide, polysulfone, or liquid crystalline polymer. The obtained insulator-coated bonding wire is characterized in that no crack develops in the insulation film when an impact of 1cm.gf is given thereto using a falling weight. Further, a method of producing this wire and a semiconductor device using the wire are disclosed.
摘要:
The present invention relates to a die package comprising a die having a plurality of connection pads, a die substrate supporting a plurality of connection elements, a first lead having a first metal core (10) with a first core diameter, and a dielectric layer (20,30) surrounding the first metal core (S1), the dielectric layer (20,30) having a first dielectric thickness that varies along its length and/ or the dielectric layer having an outer metal layer (40, S4) at least partially surrounding the dielectric layer (20,30), for selectively modifying the electrical characteristics of the lead
摘要:
The present invention relates to a bond wire having a metal core (202), a dielectric layer (200, 204), and a ground connectable metallization (206), wherein the bond wire has one or more vapor barrier coatings. Further, the present invention relates to a die package with at least one bond wire according to the invention.
摘要:
In some embodiments, a printed circuit board (PCB) comprises a substrate comprising an insulating material. The PCB further comprises a plurality of conductive tracks attached to at least one surface of the substrate. The PCB further comprises a multi-layer coating deposited on the at least one surface of the substrate. The multi-layer coating (i) covers at least a portion of the plurality of conductive tracks and (ii) comprises at least one layer formed of a halo-hydrocarbon polymer. The PCB further comprises at least one electrical component connected by a solder joint to at least one conductive track, wherein the solder joint is soldered through the multi-layer coating such that the solder joint abuts the multi-layer coating.
摘要:
A method of packaging an integrated circuit die (12) includes the steps of loading an array of soft conductive balls (12) into recesses formed in a platen (50) and locating the platen (50) in a first part of a mold cavity. A second part of the mold is pressed against the balls (12) to flatten a surface of the balls. A first mold compound (18) then is injected into the mold cavity such that the mold compound (18) surrounds exposed portions of the balls (12). The balls are removed from the platen and a first side of an integrated circuit die (20) is attached to the balls (12). Die bonding pads (28) on a second side of the die are electrically connected to respective ones of the balls (12) surrounding the die (20), and then the die (20), the electrical connections (30), and a top portion of the conductive balls (12) is encapsulated with a second mold compound (24).
摘要:
An integrated circuit package comprising a substrate having terminal pads arranged in at least one row along a perimeter of a surface of the substrate, vias connecting the terminal pads directly to connectors on an opposite side of the substrate, a semiconductor chip mounted on the substrate, inside the perimeter, the chip having bond pads located on a surface of the chip, and a plurality of insulated bond wires, each of the bond wires extending from a bond pad on the chip to a terminal pad on the substrate, the substrate being sized and shaped to provide a sufficient number of rows of terminal pads and associated vias so that horizontal traces through the substrate are not required.
摘要:
An electrical connection for connecting a bond pad of a first device and a bond pad of a second device with an insulated or coated wire. The electrical connection includes a first wirebond securing a first portion of the insulated bond wire to the first device bond pad. A second wirebond secures a second portion of the insulated bond wire to the second device bond pad. A bump is formed over the second wirebond, and the bump is offset from the second wirebond. The offset bump enhances the second bond, providing it with increased wire peel strength.
摘要:
A transfer molded high lead count plastic semiconductor package is described. The packaged IC chip (137) is mounted upon a suitable leadframe (140) and the bonding pads (138) wire bonded to the leadframe fingers. To avoid wire shorting, due to wire sweep during transfer molding, the wires (143) are first coated with an insulative material.