摘要:
A process applied to grinding, dicing, and/or stacking semiconductors is disclosed. One of its features is that after transparent material is stuck on its active surface, a semiconductor is ground from another surface thereof to become thinner, then take advantage of transparency of the transparent material to cut the transparent material and the semiconductor, to obtain at least one smaller semiconductor unit such as die or chip. Another feature is that the transparent material remains sticking to the active surface of the die by an adhesion layer until the die is attached to a carrier or another die, and then the transparent material and the adhesion layer are removed by taking advantage of a function of the adhesion layer: receiving a ray to lose adhesion between it and the active surface. Preferably the ray reaches the adhesion layer via the transparent material stuck on the active surface of the die.
摘要:
A process applied to grinding, dicing, and/or stacking semiconductors is disclosed. One of its features is that after transparent material is stuck on its active surface, a semiconductor is ground from another surface thereof to become thinner, then take advantage of transparency of the transparent material to cut the transparent material and the semiconductor, to obtain at least one smaller semiconductor unit such as die or chip. Another feature is that the transparent material remains sticking to the active surface of the die by an adhesion layer until the die is attached to a carrier or another die, and then the transparent material and the adhesion layer are removed by taking advantage of a function of the adhesion layer: receiving a ray to lose adhesion between it and the active surface. Preferably the ray reaches the adhesion layer via the transparent material stuck on the active surface of the die.
摘要:
A process applied to grinding, dicing, and/or stacking semiconductors is disclosed. One feature of the process is that after transparent material is stuck on its active surface, a semiconductor is ground from another surface thereof to become thinner, then the semiconductor is diced, by taking advantage of transparency of the transparent material, from its active surface, to obtain at least one smaller semiconductor unit such as die/dice or chip(s). Another feature is that the transparent material remains sticking to the active surface of the die by an adhesion layer until the die is attached to a carrier or another die, and then the transparent material and the adhesion layer are removed by taking advantage of a function of the adhesion layer: receiving a ray to lose adhesion between it and the active surface. Preferably the ray reaches the adhesion layer via the transparent material stuck on the active surface of the die.
摘要:
A semiconductor package using copper wires and a wire bonding method for the same are proposed. The package includes a carrier having fingers and a chip mounted on the carrier. The method includes implanting stud bumps on the fingers of the carrier and electrically connecting the chip and the carrier by copper wires with one ends of the copper wires being bonded to bond pads of the chip and the other ends of the copper wires being bonded to the stud bumps on the carrier. The implanted stud bumps on the carrier improve bondability of the copper wires to the carrier and thus prevent stitch lift. With good bonding, residues of copper wires left behind after a bonding process have even tail ends and uniform tail length to enable fabrication of solder balls of uniform size, thereby eliminating a conventional step of implanting stud bumps on the bond pads of chips and preventing ball lift from occurring.
摘要:
A semiconductor package and a fabrication method thereof are disclosed. The fabrication method includes the steps of providing a semiconductor chip having an active surface and a non-active surface opposing to the active surface, roughening a peripheral portion of the non-active surface so as to divide the non-active surface into the peripheral portion formed with a roughened structure and a non-roughened central portion, mounting the semiconductor chip on a chip carrier via a plurality of solder bumps formed on the active surface, forming an encapsulant on the chip carrier to encapsulate the semiconductor chip. The roughened structure formed on the peripheral portion of the non-active surface of the semiconductor chip can reinforce the bonding between the semiconductor chip and the encapsulant, and the non-roughened central portion of the non-active surface of the semiconductor chip can maintain the structural strength of the semiconductor chip.
摘要:
A chip scale package structure and a method for fabricating the same are disclosed. The method includes forming metal pads on a predetermined part of a carrier; mounting chips on the carrier, each of the chips having a plurality of conductive bumps soldered to the metal pads; forming an encapsulant on the carrier to encapsulate the chips and the conductive bumps; removing the carrier to expose the metal pads and even the metal pads with a surface of the encapsulant; forming on the encapsulant a plurality of first conductive traces electrically connected to the metal pads; applying a solder mask on the first conductive traces, and forming a plurality of openings on the solder mask to expose a predetermined part of the first conductive traces; forming a plurality of conductive elements on the predetermined part; and cutting the encapsulant to form a plurality of chip scale package structures.
摘要:
A semiconductor package and a fabrication method are disclosed. The fabrication method includes applying a sacrificial layer on one surface of a metal carrier, applying an insulation layer on the sacrificial layer, and forming through holes in the sacrificial layer and the insulation layer to expose the metal carrier; forming a conductive metallic layer in each through hole; forming a patterned circuit layer on the insulation layer to be electrically connected to the conductive metallic layer; mounting at least a chip on the insulation layer and electrically connecting the chip to the patterned circuit layer; forming an encapsulant to encapsulate the chip and the patterned circuit layer; and removing the metal carrier and the sacrificial layer to expose the insulation layer and conductive metallic layer to allow the conductive metallic layer to protrude from the insulation layer. In the present invention, the distance between the semiconductor package and the external device is increased, and thermal stress caused by difference between the thermal expansion coefficients is reduced, so as to enhance the reliability of the product.
摘要:
A stack structure of semiconductor packages and a method for fabricating the stack structure are provided. A plurality of electrical connection pads and dummy pads are formed on a surface of a substrate of an upper semiconductor package and at positions corresponding to those around an encapsulant of a lower semiconductor package. Solder balls are implanted to the electrical connection pads and the dummy pads. The upper semiconductor package is mounted on the lower semiconductor package. The upper semiconductor package is electrically connected to the lower semiconductor package by the solder balls implanted to the electrical connection pads, and the encapsulant of the lower semiconductor package is surrounded and confined by the solder balls implanted to the dummy pads. Thereby, the upper semiconductor package is properly and securely positioned on the lower semiconductor package, without the occurrence of misalignment between the upper and lower semiconductor packages.
摘要:
A semiconductor package with a heat dissipating device and a fabrication method of the semiconductor package are provided. A chip is mounted on a substrate. The heat dissipating device is mounted on the chip, and includes an accommodating room, and a first opening and a second opening that communicate with the accommodating room. An encapsulant is formed between the heat dissipating device and the substrate to encapsulate the chip. A cutting process is performed to remove a non-electrical part of structure and expose the first and second openings from the encapsulant. A cooling fluid is received in the accommodating room to absorb and dissipate heat produced by the chip. The heat dissipating device covers the encapsulant and the chip to provide a maximum heat transfer area for the semiconductor package.
摘要:
A semiconductor package with a heat dissipating device and a fabrication method of the semiconductor package are provided. A chip is mounted on a substrate. The heat dissipating device is mounted on the chip, and includes an accommodating room, and a first opening and a second opening that communicate with the accommodating room. An encapsulant is formed between the heat dissipating device and the substrate to encapsulate the chip. A cutting process is performed to remove a non-electrical part of structure and expose the first and second openings from the encapsulant. A cooling fluid is received in the accommodating room to absorb and dissipate heat produced by the chip. The heat dissipating device covers the encapsulant and the chip to provide a maximum heat transfer area for the semiconductor package.