摘要:
A method of manufacturing a semiconductor chip package includes mechanically and electrically connecting a semiconductor chip to a top surface of a main substrate, securely attaching the semiconductor chip to a recessed cavity on a bottom surface of an interconnection substrate, mechanically and electrically connecting the main substrate to the interconnection substrate, and cutting the main substrate to form a central substrate and a peripheral substrate wherein the semiconductor chip is disposed on the central substrate. The cutting step is conducted either (i) by forming a plurality of slots such that the central substrate and the peripheral substrate are partially conned to each other or (ii) by completely separating the central substrate and the peripheral substrate.
摘要:
A leadless semiconductor package disposed on a substrate includes a chip, a plurality of leads, wherein each lead has a metal layer and a first molding compound formed on the metal layer, a second molding compound disposed on the first molding compound, and a chip paddle for carrying the chip. The leads are connected to the chip by wire bonding technique. The metal layer is exposed out of the first molding compound; and the second molding compound encapsulates the chip with the chip paddle exposed out of the second molding compound.
摘要:
A semiconductor package comprises a semiconductor chip, a lid, a plurality of traces, a compliant layer, a plurality of conductive pastes, and a plurality of solder pads. The semiconductor chip has an active surface, a backside, and a plurality of bonding pads disposed on the active surface. The lid covers the active surface of the semiconductor chip. The traces are disposed between the lid and the active surface of the semiconductor chip, and are electrically connected to the bonding pads. The compliant layer covers the backside of the semiconductor chip for isolating the traces. The conductive pastes are electrically connected to the traces, and the solder pads are electrically connected to the conductive pastes.
摘要:
An optical component package includes a substrate, an optical component, a plurality of spacers, a plurality of wires, and a transparent molding compound. The optical component is disposed on the substrate, and the surface of the optical component located away from the substrate is used to receive an optical signal. The spacers are disposed between the substrate and optical component. The wires electrically connect the optical component to the substrate. The transparent molding compound encapsulates the optical component. In this case, the diameter of each of the spacers is equal to the thickness of the transparent molding compound minus the thickness of the optical component minus the distance between where the optical signal enters the transparent molding compound and where the optical signal is received by the optical component. Furthermore, this invention also discloses a packaging method for the optical component package.
摘要:
A wafer level package structure and a method for packaging said wafer level package structure are described. The wafer level package structure at least comprises a die, a heat slug covering said die, a carrier for supporting said heat slug and said die, a plurality of wires electrically connecting said die and said carrier, and a mould compound encapsulating said die, said carrier, said heat slug and said wires. The method comprises the steps of: (a)providing a heat slug metal with a plurality of openings; (b)mounting said heat slug metal onto a wafer to dispose said openings on corresponding bonding pads of the wafer so as to expose said bonding pads; (c)sawing said combined heat slug metal and wafer into a plurality of die units; (d)attaching said die unit onto a carrier; (e)electrically connecting a plurality of wires to said die unit and said carrier; (f)encapsulating said wired die unit and said carrier. In the present invention, the heat slug metal and wafer can be sawed into a plurality of die units at the same time to improve the defect of the complicated process of individually sawing heat slug metal and wafer and individually combining heat slug metal and wafer in the conventional method.
摘要:
A semiconductor package comprises a first chip, a substrate, a middle layer, a second chip, and an encapsulant. The first chip has an active surface and a high-frequency element defining a high-frequency area on the active surface. The substrate supports the first chip and is electrically connected to the first chip. The middle layer is disposed on the first chip and has a recess corresponding to the high-frequency area. The second chip is disposed on the middle layer and electrically connected to either the first chip or the substrate. The encapsulant encapsulates the first chip, the middle layer, the second chip, and a part of the substrate.
摘要:
A semiconductor package structure includes a substrate, a semiconductor die, a plurality of wires, and a molding compound. In this case, the semiconductor die is attached to the substrate. Each of the wires respectively has a center conductive layer, a dielectric layer, and a metal layer. Each of the center conductive layers connects the semiconductor die to the substrate. Each of the dielectric layers covers each of the center conductive layers, and the metal layers cover the dielectric layers. The molding compound encapsulates the semiconductor die and the wires. This invention also provides another semiconductor package structure, including a substrate, a semiconductor die, a plurality of wires, and a conductive molding compound. Each of the wires respectively has a center conductive layer and a dielectric layer. The conductive molding compound is made of a conductive material. Furthermore, the invention also provides a method for manufacturing the semiconductor package structure.
摘要:
A solder paste for fabricating bumps includes a flux and metallic alloy powder. The metallic alloy powder includes a plurality of low eutectic metallic alloy granules, and the size of these metallic alloy granules is 20-60 &mgr;m and the average size of the metallic granules is 35 &mgr;m to 45 &mgr;m.
摘要:
The present invention provides a bump fabrication process. After forming an under bump metallurgy (UBM) layer and bumps in sequence over the substrate, the under bump metallurgy layer that is not covered by the bumps is etched with an etchant. The etchant mainly comprises sulfuric acid and de-ionized water. The etchant can etch the nickel-vanadium layer of the UBM layer without damaging the bumps.
摘要:
A multichip module comprises at least two semiconductor chips wherein each has a row of bonding pads formed on the active surface thereof and disposed along one side edge thereof. The semiconductor chips are mounted to a substrate in a stacking arrangement wherein the upper chip is attached to the active surface of the lower chip in a manner that no portion of the upper chip interferes with a vertical line of sight of each bond pad of the lower chip to permit wire bonding thereof. Therefore, all semiconductor chips can be wire bonded simultaneously after stacking the chips on the substrate. This allows wire bonding of all chips to be completed in a single step so as to increase UPH (unit per hour), thereby reducing cost for manufacturing the MCM.