Disclosed embodiments include a semiconductor chip including a semiconductor substrate having a top surface with a top connection pad disposed therein, and a protection insulation layer comprising an opening therein, the protection insulation layer not covering at least a portion of the top connection pad, on the semiconductor substrate. The protection insulation layer may include: a bottom protection insulation layer, a cover insulation layer comprising a side cover part that covers at least a portion of a side surface of the bottom protection insulation layer and a top cover part disposed apart from the side cover part to cover at least a portion of a top surface of the bottom protection insulation layer. The protection insulation layer may further include a top protection insulation layer on the top cover part.

A structure for a semiconductor device includes a copper (Cu) layer and a first nickel (Ni) alloy layer with a Ni grain size a.sub.1. The structure also includes a second Ni alloy layer with a Ni grain size a.sub.2, wherein a.sub.1<a.sub.2. The first Ni alloy layer is between the Cu layer and the second Ni alloy layer. The structure further includes a tin (Sn) layer. The second Ni alloy layer is between the first Ni alloy layer and the Sn layer.

Disclosed embodiments include a semiconductor chip including a semiconductor substrate having a top surface with a top connection pad disposed therein, and a protection insulation layer comprising an opening therein, the protection insulation layer not covering at least a portion of the top connection pad, on the semiconductor substrate. The protection insulation layer may include: a bottom protection insulation layer, a cover insulation layer comprising a side cover part that covers at least a portion of a side surface of the bottom protection insulation layer and a top cover part disposed apart from the side cover part to cover at least a portion of a top surface of the bottom protection insulation layer. The protection insulation layer may further include a top protection insulation layer on the top cover part.

A semiconductor package includes a semiconductor chip comprising a first surface and a second surface, a redistribution layer on the first surface of the semiconductor chip, an under bump metal (UBM) layer on the redistribution layer, and a solder bump on the UBM layer, and the solder bump covers both outer side surfaces of the UBM layer.

A semiconductor package includes a first connection structure, a first semiconductor chip on an upper surface of the first connection structure, a first molding layer on the upper surface of the first connection structure and surrounding the first semiconductor chip, a first bond pad on the first semiconductor chip, a first bond insulation layer on the first semiconductor chip and the first molding layer and surrounding the first bond pad, a second bond pad directly contacting the first bond pad, a second bond insulation layer surrounding the second bond pad; and a second semiconductor chip on the second bond pad and the second bond insulation layer.

A semiconductor package comprises a semiconductor substrate, a first metal layer, an adhesive layer, a second metal layer, a rigid supporting layer, and a plurality of contact pads. A thickness of the semiconductor substrate is equal to or less than 50 microns. A thickness of the rigid supporting layer is larger than the thickness of the semiconductor substrate. A thickness of the second metal layer is larger than a thickness of the first metal layer. A method comprises the steps of providing a device wafer; providing a supporting wafer; attaching the supporting wafer to the device wafer via an adhesive layer; and applying a singulaton process so as to form a plurality of semiconductor packages.

Methods for forming a semiconductor device structure are provided. The method includes forming a conductive feature in a first wafer, and forming a first bonding layer over the conductive feature. The method includes forming a second bonding layer over a second wafer, and bonding the first wafer and the second wafer by bonding the first bonding layer and the second bonding layer. The method also includes forming a second transistor in a front-side of the second wafer, and after forming the second transistor in the front-side of the second wafer, forming a first TSV through the second wafer, wherein the first TSV stops at the conductive feature.

The present disclosure provides a method for manufacturing a semiconductor structure. The method includes providing a substrate having a redistribution layer (RDL); disposing an etch stop layer over a RDL; patterning the dielectric layer and the etch stop layer; disposing a first seed layer over the etch stop layer and a portion of the dielectric layer that is exposed through the etch stop layer; disposing a second patterned photoresist over the first seed layer; disposing a conductive material over a portion of the first seed layer that is exposed through the second patterned photoresist; removing the second patterned photoresist; removing the etch stop layer; and removing a portion of the conductive material that protrudes from the dielectric layer to form a bonding pad adjacent to the conductive plug and surrounded by the dielectric layer.

A semiconductor package comprises a semiconductor substrate, a first metal layer, an adhesive layer, a second metal layer, a rigid supporting layer, and a plurality of contact pads. A thickness of the semiconductor substrate is equal to or less than 50 microns. A thickness of the rigid supporting layer is larger than the thickness of the semiconductor substrate. A thickness of the second metal layer is larger than a thickness of the first metal layer. A method comprises the steps of providing a device wafer; providing a supporting wafer; attaching the supporting wafer to the device wafer via an adhesive layer; and applying a singulaton process so as to form a plurality of semiconductor packages.

A semiconductor package includes a semiconductor chip comprising a first surface and a second surface, a redistribution layer on the first surface of the semiconductor chip, an under bump metal (UBM) layer on the redistribution layer, and a solder bump on the UBM layer, and the solder bump covers both outer side surfaces of the UBM layer.