Abstract:
A method and apparatus for a reinforced package are provided. A package component may be electrically coupled to a device through a plurality of electrical connections. A molding underfill may be interposed between the package component and the device and may encapsulate the plurality of electrical connections or a subset of the plurality of electrical connections between the package component and the device. The package component may also include a molding compound. The plurality of the electrical connections may extend through the molding compound with the molding underfill interposed between the molding compound and the device to encapsulate the plurality of electrical connections or a subset of the plurality of electrical connections between the package component and the device. The molding underfill may extend up one or more sides of the package component.
Abstract:
A method includes forming a passivation layer over a metal pad, wherein the metal pad is further overlying a semiconductor substrate of a wafer. A Post-Passivation Interconnect (PPI) is formed to electrically couple to the metal pad, wherein a portion of the PPI is overlying the passivation layer. A metal bump is formed over and electrically coupled to the PPI. The method further includes applying a molding compound over the metal bump and the PPI, applying a release film over the molding compound, pressing the release film against the molding compound, and curing the molding compound when the release film is pressed against the molding compound. The release film is then removed from the molding compound. The wafer is sawed into dies using a blade, with the blade cutting through the molding compound.
Abstract:
A method of forming a bump structure includes forming a metallization layer on a top metal layer by electroless plating process, forming a polymer layer over the metallization layer; forming an opening on the polymer layer to expose the metallization layer, and forming a solder bump over the exposed metallization layer to make electrical contact with the top metal layer.
Abstract:
A semiconductor device includes an under-bump metallization (UBM) layer over a substrate. The semiconductor device also includes a copper-containing layer having a base portion over the UBM layer. The semiconductor device further includes a solder bump over the UBM layer and over the copper-containing layer. The base portion is embedded in the solder bump. The copper-containing layer has a cylindrical shape and includes at least two segments separated by at least two openings. A first total area (A) of the at least two openings is greater than about 3% of a second total area (B) of the at least two segments. The first total area (A) is less than about 70% of the second total area (B) of the at least two segments.
Abstract:
A semiconductor device has a first conductive layer formed over a substrate. A first insulating layer is formed over the substrate and first conductive layer. A second conductive layer is formed over the first conductive layer and first insulating layer. A second insulating layer is formed over the first insulating layer and second conductive layer. The second insulating layer has a sidewall between a surface of the second insulating material and surface of the second conductive layer. A protective layer is formed over the second insulating layer and surface of the second conductive layer. The protective layer follows a contour of the surface and sidewall of the second insulating layer and second conductive layer. A bump is formed over the surface of the second conductive layer and a portion of the protective layer adjacent to the second insulating layer. The protective layer protects the second insulating layer.
Abstract:
Methods of forming 3-D ICs with integrated passive devices (IPDs) include stacking separately prefabricated substrates coupled by through-substrate-vias (TSVs). An active device (AD) substrate has contacts on its upper portion. An isolator substrate is bonded to the AD substrate so that TSVs in the isolator substrate are coupled to the contacts on the AD substrate. An IPD substrate is bonded to the isolator substrate so that TSVs therein are coupled to an interconnect zone on the isolator substrate and/or TSVs therein. The IPDs of the IPD substrate are coupled by TSVs in the IPD and isolator substrates to devices in the AD substrate. The isolator substrate provides superior IPD to AD cross-talk attenuation while permitting each substrate to have small high aspect ratio TSVs, thus facilitating high circuit packing density and efficient manufacturing.
Abstract:
The present invention relates to a process for realizing a connecting structure in a semiconductor substrate, and the semiconductor substrate realized accordingly. The semiconductor substrate has at least a first surface, and is foreseen for a 3D integration with a second substrate along the first surface, wherein the 3D integration is subject to a lateral misalignment in at least one dimension having a misalignment value. This process includes growing a diffusion barrier structure for preventing diffusion of elements out of a conductive layer into the rest of the semiconductor substrate, wherein a first end surface, being the most outward surface of the diffusion barrier structure and being substantially parallel to the first surface, along a direction perpendicular to the first surface and going from the substrate toward the first surface, of the diffusion barrier structure can have a length, in the direction of the lateral misalignment, the length being dependent on the misalignment value, wherein the length of the diffusion barrier structure is chosen such that in a 3D integrated structure a diffusion of elements out of a conductive layer of the second substrate is prevented in the integrated state.
Abstract:
In a power semiconductor module, a copper-containing first soldering partner, a connection layer, and a copper-containing second soldering partner are arranged successively and fixedly connected with one another. The connection layer has a portion of intermetallic copper-tin phases of at least 90% by weight. For producing such a power semiconductor module the soldering partners and the solder arranged there between are pressed against one another with a predefined pressure and the solder is melted. After termination of a predefined period of time the diffused copper and the tin from the liquid solder form a connection layer comprising intermetallic copper-tin phases, the portion of which is at least 90% by weight of the connection layer created from the solder layer.
Abstract:
In accordance with one embodiment of the present disclosure, a method of forming a metal feature includes etching a portion of a first metal layer using a first etching chemistry, and etching a portion of a barrier layer using a second etching chemistry to achieve a barrier layer undercut of less than or equal to 2 times the thickness of the barrier layer.
Abstract:
A device and method of manufacture is provided that utilize a dummy pad feature adjacent contact pads. The contact pads may be contact pads in an integrated fan-out package in which a molding compound is placed along sidewalls of a die and the contact pads extend over the die and the molding compound. The contact pads are electrically coupled to the die using one or more redistribution layers. The dummy pad features are electrically isolated from the contact pads. In some embodiments, the dummy pad features partially encircle the contact pads and are located in a corner region of the molding compound, a corner region of the die, and/or an interface region between an edge of the die and the molding compound.