Abstract:
A support assembly for mounting a semiconductor device vertically relative to a carrier substrate. The support assembly includes an interposer to which the semiconductor device is attached. The support assembly also includes traces carried on the interposer, which electronically connect the semiconductor device to contacts on the interposer. The contacts are disposed along a single edge of the interposer. The invention also includes an alignment device for releaseably mounting the support assembly. The alignment device, which mounts to a carrier substrate, includes one or more receptacles. As a support assembly is inserted into a receptacle, the alignment device establishes an electrical connection between the contacts and corresponding terminals on the carrier substrate. The assembly may also include a cover that attaches to the top of the alignment device and biases the interposer against the carrier substrate.
Abstract:
A semiconductor device including bond pads disposed proximate an edge thereof, and an overcoat layer. The overcoat layer defines notches around each of the bond pads. The overcoat layer may be formed from a photoimageable material such as a photoimageable epoxy. The invention also includes an alignment device that secures the semiconductor device perpendicularly upon a carrier substrate. The alignment device includes intermediate conductive elements which correspond to the bond pads of the semiconductor device. Upon insertion of the semiconductor device into the alignment device, the notches facilitate alignment of the bond pads with their corresponding intermediate conductive elements. The intermediate conductive elements establish an electrical connection between the semiconductor device and the carrier substrate.
Abstract:
A socket that secures bare and minimally packaged semiconductor devices substantially perpendicularly relative to a carrier substrate. The socket includes intermediate conductive elements and a member which moves the intermediate conductive elements between an insertion position and a biased position. After placement of the intermediate conductive elements into an insertion position, a semiconductor device may be inserted into a receptacle of the socket with minimal insertion force. Movement of the member to a biased position facilitates biasing of the intermediate conductive elements against a bond pad of the semiconductor device. The intermediate conductive elements establish an electrical connection between the semiconductor device and the carrier substrate. A first embodiment of the socket includes a member which moves transversely relative to the remainder of the socket. In a second embodiment of the socket, the member moves vertically relative to the socket body.
Abstract:
A semiconductor device having a die paddle and a die disposed on the die paddle. The die paddle serves as a heat dissipation device and the die paddle is partially and/or fully encapsulated by a package body. Thermal posts extend from the die paddle to direct heat from the semiconductor device to a printed circuit board and further provide stability and alignment during placement of the semiconductor device on the printed circuit board.
Abstract:
A multichip module includes a printed circuit printed circuit board onto which traces of electrically conductive material are formed and into which groups of plated vias are formed. Each group of vias is associated with an integrated circuit to be mounted in the assembly and has a spacing pattern that is identical to the spacing pattern of the bond pads of the integrated circuit with which it is associated. A layer of insulative adhesive material is provided, one side of which is attached to the printed circuit board. A plurality of integrated circuits are attached to the other side of the adhesive material. Each of the integrated circuits has a plurality of bond pads in a spacing pattern. A conductive contact is disposed in each via to connect a bond pad to that via.
Abstract:
A structure for attaching a semiconductor wafer section to a lead frame comprises a carrier having an outside surface and an adhesive coating the carrier. Prior to use, the structure can be placed onto spools for easy shipment and storage.
Abstract:
A "leads over chip" lead frame design is disclosed which can be used with a conventional die having leads located at the periphery. The inventive design uses an elongated tie bar which extends from one side of the lead frame to the other, across the die. The die is attached to the bottom of the tie bar, then the bond pads are wire bonded to the lead fingers. The lead fingers of the inventive lead frame do not extend over the top of the die, but are positioned in close proximity to allow for short bond wires. The die and a portion of the lead fingers are encapsulated, and the tie bars are severed to separate them from the lead frame. The invention allows the advantages of a leads over die configuration with a conventional die having bond pads located at the periphery. Therefor, a single die can be manufactured which can be used either with the inventive lead frame for a plastic package, or with a ceramic package.
Abstract:
A semiconductor device assembly and method of making the devices are disclosed. The assembly comprises a semiconductor die attached to an electrically conductive layer, which is, in turn, connected to a dielectric layer carrying conductive traces of the electrical connection layer. The conductive traces provide connection between an array of discrete conductive elements and bonding wires connected to bond pads of the die. The conductive layer enhances thermal conduction and structural stiffness for the assembly. In addition, the conductive layer provides a voltage reference plane that may be connected to a power source, a ground source, or an intermediate reference voltage. The conductive layer also includes at least one electrical current isolation slot, which segments the conductive layer to help isolate noise induced in one segment of the conductive layer from the other segments.
Abstract:
A vertically mountable semiconductor device assembly including a semiconductor device and a mechanism for attaching the semiconductor device to a carrier substrate. The semiconductor device has each of its bond pads disposed proximate a single edge thereof. At least a portion of the semiconductor device may be exposed. An alignment device is attached to a carrier substrate. A mounting element on the vertically mountable semiconductor device package engages the alignment device to interconnect the semiconductor device and the alignment device. The alignment device may secure the vertically mountable semiconductor device package perpendicular relative to the carrier substrate. The distance between the bond pads and corresponding terminals on the carrier substrate is very small in order to reduce impedance. The vertically mountable semiconductor device package may also be readily user-upgradable.
Abstract:
A vertically mountable semiconductor device including a plurality of stub contacts extending perpendicularly from a bottom edge thereof. A complementary alignment device includes a receptacle for receiving the vertically mountable semiconductor device. The alignment device is attachable to a carrier substrate. Upon attachment of the alignment device to a carrier substrate and insertion of a vertically mountable semiconductor device into the receptacle, a contact element applies a downward force to the vertically mountable semiconductor device to establish and maintain an electrical connection between the vertically mountable semiconductor device and the carrier substrate.