摘要:
A flip chip ball grid array package is provided. In one embodiment, a flip chip ball grid array package comprises a substrate having an upper surface and a lower surface opposite the upper surface and a microelectronic element comprising a set of solder balls being secured to the upper surface of the substrate. A constraint member is secured to the lower surface of the substrate so that the constraint member has a degree of rigidity to reduce warpage due to thermal expansion mismatches between at least the microelectronic element and the substrate.
摘要:
A flip chip ball grid array package is provided. In one embodiment, a flip chip ball grid array package comprises a substrate having an upper surface and a lower surface opposite the upper surface and a microelectronic element comprising a set of solder balls being secured to the upper surface of the substrate. A constraint member is secured to the lower surface of the substrate so that the constraint member has a degree of rigidity to reduce warpage due to thermal expansion mismatches between at least the microelectronic element and the substrate.
摘要:
In a package structure, a stiffener ring is over and bonded to a top surface of a first package component. A second package component is over and bonded to the top surface of the first package component, and is encircled by the stiffener ring. A metal lid is over and bonded to the stiffener ring. The metal lid has a through-opening.
摘要:
An enhanced wafer level chip scale packaging (WLCSP) copper electrode post is described having one or more pins that protrude from the top of the electrode post. When the solder ball is soldered onto the post, the pins are encapsulated within the solder material. The pins not only add shear strength to the soldered joint between the solder ball and the electrode post but also create a more reliable electrical connection due to the increased surface area between the electrode post/pin combination and the solder ball. Moreover, creating an irregularly shaped solder joint retards the propagation of cracks that may form in the intermetal compounds (IMC) layer formed at the solder joint.
摘要:
A method for fabricating a semiconductor package is provided. In one embodiment, a semiconductor chip having a plurality of exposed conductive layers thereon is provided. A first substrate having a first surface and a second surface is provided, the first surface having a plurality of exposed via plugs thereunder. The semiconductor chip is bonded to the first substrate, wherein the plurality of exposed conductor layers are aligned and in contact with the surfaces of the exposed via plugs. A portion of the second surface of the first substrate is then removed to expose the opposite ends of the plurality of via plugs. A plurality of UBM layers is formed on the surfaces of the opposite ends of the plurality of via plugs. A plurality of solder bumps is formed and mounted on the UBM layers. A second substrate having a first surface and a second surface is provided, the solder bumps being mounted to the first surface of the second substrate. A plurality of solder balls is formed and mounted to the second surface of the second substrate. A third substrate is mounted to the solder balls.
摘要:
A silicon-based thin package substrate is used for packaging semiconductor chips. The silicon-based thin package substrate preferably has a thickness of less than about 200 μm. A plurality of through-hole vias are formed in the silicon-based thin package substrate, connecting BGA balls and solder bumps. The silicon-based thin package substrate may be used as a carrier of semiconductor chips.
摘要:
A constraint stiffener for reinforcing an integrated circuit package is provided. In one embodiment, the constraint stiffener comprises a rigid, planar base element for bonding to an integrated circuit substrate. The base element has a plurality of elongated support members, and the base element has an opening therein for surrounding an integrated circuit. The base element and support members reduce warpage due to thermal expansion mismatches between at least the integrated circuit and the substrate. In one embodiment, the elongated support members are detachable from the corners of the base element. In another embodiment, the elongated support members have means for attaching and detaching to the corners of the base element. In yet another embodiment, the elongated support members are detachable from about the midsections of the base element. In another embodiment, the elongated support members have means for attaching and detaching to the midsections of the base element.
摘要:
A semiconductor assembly has solder bumps with increased reliability. One embodiment of an assembly comprises a first substrate having at least one conductive pad on its surface; a second substrate having at least one conductive pad on its surface; at least one conductive stud; and at least one solder bump in contact with the conductive pad on the first substrate, and in contact with the conductive pad of the second substrate, and formed around the at least one conductive stud. Methods for providing these assemblies are included.
摘要:
A silicon-based thin package substrate is used for packaging semiconductor chips. The silicon-based thin package substrate preferably has a thickness of less than about 200 μm. A plurality of traces is formed in the silicon-based thin package substrate, connecting BGA balls and solder bumps. A semiconductor chip may be mounted on the solder bumps. The silicon-based thin package substrate may be used as a carrier of semiconductor chips.
摘要:
A silicon-based thin package substrate is used for packaging semiconductor chips. The silicon-based thin package substrate preferably has a thickness of less than about 200 μm. A plurality of traces is formed in the silicon-based thin package substrate, connecting BGA balls and solder bumps. A semiconductor chip may be mounted on the solder bumps. The silicon-based thin package substrate may be used as a carrier of semiconductor chips.