Abstract:
A method for fabricating a packaging substrate includes: providing a carrier having a first metal layer and a second metal layer formed on the first metal layer; forming a first circuit layer on the second metal layer and forming a separating portion on an edge of the second metal layer such that the separating portion is spaced from the first circuit layer; forming a dielectric layer on the second metal layer and the first circuit layer such that the first circuit layer and the separating portion are embedded in the dielectric layer and portions of the dielectric layer are formed between the first circuit layer and the separating portion; forming a second circuit layer on the dielectric layer; and applying forces on the separating portion so as to remove the first metal layer and the carrier, thereby maintaining the integrity of the first circuit layer.
Abstract:
A method for fabricating a POP structure is disclosed. First, a first package is provided, which has: a dielectric layer; a stacked circuit layer embedded in the dielectric layer and exposed from upper and lower surfaces of the dielectric layer; a plurality of conductive posts and a semiconductor chip disposed on the upper surface of the dielectric layer and electrically connected to the stacked circuit layer; and an encapsulant formed on upper surface of the dielectric layer for encapsulating the semiconductor chip and the conductive posts and having a plurality of openings for exposing top ends of the conductive posts. Then, a second package is disposed on the encapsulant and electrically connected to the conductive posts. The formation of the conductive posts facilitates to reduce the depth of the openings of the encapsulant, thereby reducing the fabrication time and increasing the production efficiency and yield.
Abstract:
A semiconductor package structure includes: a dielectric layer; a metal layer disposed on the dielectric layer and having a die pad and traces, the traces each including a trace body, a bond pad extending to the periphery of the die pad, and an opposite trace end; metal pillars penetrating the dielectric layer with one ends thereof connecting to the die pad and the trace ends while the other ends thereof protruding from the dielectric layer; a semiconductor chip mounted on the die pad and electrically connected to the bond pads through bonding wires; and an encapsulant covering the semiconductor chip, the bonding wires, the metal layer, and the dielectric layer. The invention is characterized by disposing traces with bond pads close to the die pad to shorten bonding wires and forming metal pillars protruding from the dielectric layer to avoid solder bridging encountered in prior techniques.
Abstract:
A semiconductor package having electrical connecting structures includes: a conductive layer having a die pad and traces surrounding the die pad; a chip; bonding wires; an encapsulant with a plurality of cavities having a depth greater than the thickness of the die pad and traces for embedding the die pad and the traces therein, and the cavities exposing the die pad and the traces; a solder mask layer formed in the cavities and having a plurality of openings for exposing the trace ends and a portion of the die pad; and solder balls formed in the openings and electrically connected to the trace ends. Engaging the solder mask layer with the encapsulant enhances adhesion strength of the solder mask layer so as to prolong the moisture permeation path and enhance package reliability.
Abstract:
A semiconductor package having electrical connecting structures includes: a conductive layer having a die pad and traces surrounding the die pad; a chip; bonding wires; an encapsulant with a plurality of cavities having a depth greater than the thickness of the die pad and traces for embedding the die pad and the traces therein, and the cavities exposing the die pad and the traces; a solder mask layer formed in the cavities and having a plurality of openings for exposing the trace ends and a portion of the die pad; and solder balls formed in the openings and electrically connected to the trace ends. Engaging the solder mask layer with the encapsulant enhances adhesion strength of the solder mask layer so as to prolong the moisture permeation path and enhance package reliability.
Abstract:
A method for fabricating a packaging substrate includes: providing a carrier having a first metal layer and a second metal layer formed on the first metal layer; forming a first circuit layer on the second metal layer and forming a separating portion on an edge of the second metal layer such that the separating portion is spaced from the first circuit layer; forming a dielectric layer on the second metal layer and the first circuit layer such that the first circuit layer and the separating portion are embedded in the dielectric layer and portions of the dielectric layer are formed between the first circuit layer and the separating portion; forming a second circuit layer on the dielectric layer; and applying forces on the separating portion so as to remove the first metal layer and the carrier, thereby maintaining the integrity of the first circuit layer.
Abstract:
A method for fabricating a POP structure is disclosed. First, a first package is provided, which has: a dielectric layer; a stacked circuit layer embedded in the dielectric layer and exposed from upper and lower surfaces of the dielectric layer; a plurality of conductive posts and a semiconductor chip disposed on the upper surface of the dielectric layer and electrically connected to the stacked circuit layer; and an encapsulant formed on upper surface of the dielectric layer for encapsulating the semiconductor chip and the conductive posts and having a plurality of openings for exposing top ends of the conductive posts. Then, a second package is disposed on the encapsulant and electrically connected to the conductive posts. The formation of the conductive posts facilitates to reduce the depth of the openings of the encapsulant, thereby reducing the fabrication time and increasing the production efficiency and yield.
Abstract:
A semiconductor package having electrical connecting structures includes: a conductive layer having a die pad and traces surrounding the die pad; a chip; bonding wires; an encapsulant with a plurality of cavities having a depth greater than the thickness of the die pad and traces for embedding the die pad and the traces therein, and the cavities exposing the die pad and the traces; a solder mask layer formed in the cavities and having a plurality of openings for exposing the trace ends and a portion of the die pad; and solder balls formed in the openings and electrically connected to the trace ends. Engaging the solder mask layer with the encapsulant enhances adhesion strength of the solder mask layer so as to prolong the moisture permeation path and enhance package reliability.
Abstract:
A semiconductor package structure includes: a dielectric layer; a metal layer disposed on the dielectric layer and having a die pad and traces, the traces each including a trace body, a bond pad extending to the periphery of the die pad, and an opposite trace end; metal pillars penetrating the dielectric layer with one ends thereof connecting to the die pad and the trace ends while the other ends thereof protruding from the dielectric layer; a semiconductor chip mounted on the die pad and electrically connected to the bond pads through bonding wires; and an encapsulant covering the semiconductor chip, the bonding wires, the metal layer, and the dielectric layer. The invention is characterized by disposing traces with bond pads close to the die pad to shorten bonding wires and forming metal pillars protruding from the dielectric layer to avoid solder bridging encountered in prior techniques.
Abstract:
A semiconductor package is disclosed, which includes: a substrate having a plurality of switching pads, a plurality of first conductive pads and a plurality of circuits formed between the switching pads and the first conductive pads; an insulating layer covering the circuits; a conductive layer formed on the insulating layer and extending to the switching pads and the first conductive pads; and a semiconductor element disposed on the substrate and electrically connected to the switching pads through a plurality of bonding wires. By electrically connecting the switching pads and the first conductive pads through the conductive layer, the invention dispenses with the conventional short bonding wires so as to prevent the conventional problem of short circuits caused by contact of the short bonding wires with other bonding wires.