摘要:
An optical sensor package has a transparent substrate with a redistribution layer formed on a face thereof, which includes a window and a plurality of electrically conductive traces. A semiconductor substrate, including an optical sensor and a plurality of contact terminals on a face thereof, is positioned on the transparent substrate in a face-to-face arrangement, with the optical sensor directly opposite the window, and with each of the contact terminals electrically coupled to a respective one of the electrically conductive terminals. The transparent substrate has larger overall dimensions than the semiconductor substrate, so that one or more edges of the transparent substrate extend beyond the corresponding edges of the semiconductor substrate. A plurality of solder balls are positioned on the face of the transparent substrate, each in electrical contact with a respective one of the electrically conductive terminals. The solder balls and the semiconductor substrate are at least partially encapsulated in an encapsulating layer formed on the face of the transparent substrate, which has been planarized to expose upper portions of the solder balls, as contact pads of the optical sensor package.
摘要:
Ball grid array to pin grid array conversion methods are provided. An example method can include coupling a plurality of solder balls to a respective plurality of pin grid array contact pads. Each of the plurality of solder balls is encapsulated in a fixed material. A portion of the plurality of solder balls and a portion of the fixed material is removed to provide a plurality of exposed solder balls. The exposed solder balls are softened and each of a plurality of pin members is inserted in a softened, exposed, solder ball. The plurality of pin members forms a pin grid array package.
摘要:
A fan-out wafer level package includes a semiconductor die with contact pads positioned on a top surface. A fan-in redistribution layer positioned over the die includes contact pads in electrical communication with the first contact pads of the die. A buffer layer positioned over the fan-in layer includes a plurality of vias, in electrical contact with the contact pads of the fan-in layer. A fan-in redistribution layer is positioned over the buffer layer and includes contact pads on a surface opposite the buffer layer, in electrical communication with the vias. The semiconductor die, fan-in layer, and buffer layer are encapsulated in a molding com-pound layer. Solder contacts, for electrically connecting the semiconductor device to a electronic circuit board, are positioned on contact pads of the fan-out layer. The buffer layer has a substantial thickness, to reduce and distribute shear stresses resulting from thermal mismatch of coefficients of thermal expansion of the semiconductor die and a circuit board.
摘要:
A ball grid array (BGA) package includes a substrate layer having first and second sides. A semiconductor chip is attached to the first side of the substrate layer by a dielectric adhesive layer. A plurality of solder balls are attached to the second side of the substrate layer. The solder balls may be set out by rows and columns. A plurality of wires electrically connect the semiconductor chip to the solder balls. A layer of encapsulating compound is deposited over the semiconductor chip. A step cavity of a selected depth and shape is formed in the layer of encapsulating compound at or near the edge or periphery of the layer of encapsulating compound. The step cavity is separated from the solder balls by the substrate layer but spans over a plurality of selected solder balls.
摘要:
A multi-stack semiconductor dice assembly has enhanced board-level reliability and integrated electrical functionalities over a common package foot-print. The multi-stack semiconductor dice assembly includes a bottom die having a stepped upper surface. The stepped upper surface includes a base region and a stepped region, which is raised relative to the base region. The base region includes a plurality of attachment structures that are sized and shaped to receive electrically conductive balls. An upper die is stacked above the bottom die. The upper die includes a plurality of attachment structures that are sized and shaped to receive electrically conductive balls and are arranged to align with the attachment structures of the bottom die. Electrically conductive balls are attached to the attachment structures of the bottom die and the attachment structures of the upper die.
摘要:
An integrated circuit die has a dielectric layer positioned over all the contact pads on the integrated circuit die. Openings are provided in the dielectric layer over each of the contact pads of the integrated circuit die in order to permit electrical coupling to be made between the integrated circuit and circuit boards outside of the die. For those contact pads located in the central region of the die, the opening in the dielectric layer is in a central region of the contact pad. For those contact pads located in a peripheral region of the die, spaced adjacent the perimeter die, the opening in the dielectric layer is offset from the center of the contact pad and is positioned closer to the central region of the die than the center of the contact pad is to the central region of the die.
摘要:
A chip scale package (CSP) device includes a CSP having a semiconductor die electrically coupled to a plurality of solder balls. A can having an inside top surface and one or more side walls defines a chamber. The CSP is housed in the chamber and is attached to the inside top surface of the can. A printed circuit board is attached to the solder balls and to the one or more side walls to provide support to the CSP and to the can. The CSP may be a Wafer-Level CSP. The can may be built from a metallic substance or from a non-metallic substance. The can provides stress relief to the CSP during a drop test and during a thermal cycle test.
摘要:
An optical sensor package has a transparent substrate with a redistribution layer formed on a face thereof, which includes a window and a plurality of electrically conductive traces. A semiconductor substrate, including an optical sensor and a plurality of contact terminals on a face thereof, is positioned on the transparent substrate in a face-to-face arrangement, with the optical sensor directly opposite the window, and with each of the contact terminals electrically coupled to a respective one of the electrically conductive terminals. The transparent substrate has larger overall dimensions than the semiconductor substrate, so that one or more edges of the transparent substrate extend beyond the corresponding edges of the semiconductor substrate. A plurality of solder balls are positioned on the face of the transparent substrate, each in electrical contact with a respective one of the electrically conductive terminals. The solder balls and the semiconductor substrate are at least partially encapsulated in an encapsulating layer formed on the face of the transparent substrate, which has been planarized to expose upper portions of the solder balls, as contact pads of the optical sensor package.
摘要:
A multi-stack semiconductor dice assembly has enhanced board-level reliability and integrated electrical functionalities over a common package foot-print. The multi-stack semiconductor dice assembly includes a bottom die having a stepped upper surface. The stepped upper surface includes a base region and a stepped region, which is raised relative to the base region. The base region includes a plurality of attachment structures that are sized and shaped to receive electrically conductive balls. An upper die is stacked above the bottom die. The upper die includes a plurality of attachment structures that are sized and shaped to receive electrically conductive balls and are arranged to align with the attachment structures of the bottom die. Electrically conductive balls are attached to the attachment structures of the bottom die and the attachment structures of the upper die.
摘要:
A flip-chip fan-out wafer level package for package-on-package applications includes a semiconductor die with solder bumps on an upper surface in a flip chip configuration. The die is inverted, with an upper surface facing an upper side of a redistribution layer, with the solder bumps in electrical contact with respective chip contact pads of the redistribution layer. The redistribution layer includes conductive traces that place each of the solder bumps in electrical contact with one or both of one of a plurality of upper redistribution contact pads and one of a plurality of lower redistribution contact pads. Each of the plurality of upper redistribution contact pads has an upper solder ball in electrical contact therewith. The die and the upper solder balls are at least partially encapsulated in a layer of mold compound positioned on the upper surface of the redistribution layer, and whose lateral dimensions are defined by the lateral dimensions of the redistribution layer. The layer of mold compound has a back-ground surface at which a portion of each of the upper solder balls is exposed, for electrical contact with an upper package. Each of the lower redistribution contact pads has a lower solder ball a coupled thereto.