Abstract: A method for re-forming BGA of a semiconductor package includes the steps of, providing a semiconductor package element formed with balls grid array, at least one of diameter of the ball is larger than the others ; providing a jig formed with penetrated holes corresponding to the each of balls of the semiconductor package element ; providing the jig mounted to the semiconductor package element, each of balls is located within the corresponding to the penetrated holes, the at least one of bigger ball is exposed from the surface of the penetrated holes of the jig; grinding the exposed part of the balls to exact size; and re-working the processes of manufacturing BGA.

Abstract: A jig structure for manufacturing a stacked memory card, wherein the stacked memory card has a substrate forming with a package area and at least a electrical element, the jig structure is formed with a penetrated slot corresponding to the mounted area of the substrate and at least a protection cover corresponding to the electrical element.

Abstract: A structure of stacked memory card, the structure includes a substrate, a lower chip, wires, adhered element, upper chip, and compound resin. The substrate has an upper surface formed with a plurality of first electrodes, and a lower surface. The B-stage glue is coated on the upper surface of the substrate. The lower chip is arranged on the upper surface of the substrate, and is located on the B-stage glue. The plurality of wires are electrically connected the lower chip to the first electrode of the substrate. The adhesive element includes adhesive agent and filling elements is coated on the lower chip. The upper chip is adhered on the lower chip by adhesive element, and is spaced with the lower chip through the filling element, then is electrically connected to the first electrode of the substrate by wires. The compound resin is encapsulated on the upper chip, lower chip, and wires.