Abstract:
A semiconductor device includes a first interconnection including a first end, a second interconnection connected to the first interconnection and including a width being gradually wider towards the first end, a third interconnection and a fourth interconnection, the third interconnection and the fourth interconnection being arranged to sandwich the second interconnection. The first interconnection, the second interconnection, the third interconnection, and the fourth interconnection are each formed in a same layer and a width of the first interconnection is wider than a width of the second interconnection.
Abstract:
In a semiconductor device including a higher-breakdown-voltage MISFET, an improvement is achieved in the breakdown voltage of the MISFET, while preventing an increase in the area of the MISFET. A gate pattern including a gate electrode of the higher-breakdown-voltage MISFET is formed higher in level than a gate pattern including a gate electrode of a lower-breakdown-voltage MISFET. An n+-type semiconductor region included in each of source/drain regions of the higher-breakdown-voltage MISFET is formed deeper than an n+-type semiconductor region included in each of source/drain regions of the lower-breakdown-voltage MISFET.
Abstract:
Performance of a semiconductor device is improved. Graphene particles are mixedly added in a sealing resin covering a semiconductor chip. The graphene particles are thus mixedly added in the sealing resin, thereby thermal conduction of the sealing resin is improved, and thus radiation performance of the semiconductor device can be improved. Graphene is a sheet of sp2 bonded carbon atoms having a monolayer thickness. Graphene has a structure where hexagonal lattices, each of which is formed of carbon atoms and bonds of the carbon atoms, are planarly spread. Graphene is preferably used as heat transfer filler because of its high thermal conductivity and light weight.
Abstract:
While strength of a wiring board in a semiconductor substrate is ensured, thermal conductivity is increased. A BGA includes a wiring board having an upper surface and a lower surface, a semiconductor chip mounted on the upper surface of the wiring board, and ball electrodes that are a plurality of external terminals provided on the lower surface of the wiring board. The wiring board includes an insulation layer arranged between wiring layers. The insulation layer includes a resin layer, another resin layer, and an electrically conducting layer arranged between the resin layer and the other resin layer. The electrically conducting layer is formed by a lamination of a graphite sheet and a metal layer.
Abstract:
A semiconductor device including a semiconductor chip and a heat dissipation unit (heat sink) is configured as follows. The heat dissipation unit (heat sink) includes a resin tape, and a fin constituted of a graphite sheet and protruding from the resin tape. The fin, including graphene, is disposed on the semiconductor chip such that the graphene is disposed in a direction crossing a surface of the semiconductor chip. The heat dissipation unit is a rolled body in which the graphite sheet and the resin tape are layered and rolled. Thus, by use of the graphene as a constituent material of the fin, thermal conductivity is improved, whereby a heat dissipation characteristic is improved. Furthermore, since the fin is protruded from the resin tape, an exposed area of the fin is increased, and accordingly, the heat dissipation characteristic can be improved.
Abstract:
Performance of a semiconductor device is improved. Graphene particles are mixedly added in a sealing resin covering a semiconductor chip. The graphene particles are thus mixedly added in the sealing resin, thereby thermal conduction of the sealing resin is improved, and thus radiation performance of the semiconductor device can be improved. Graphene is a sheet of sp2 bonded carbon atoms having a monolayer thickness. Graphene has a structure where hexagonal lattices, each of which is formed of carbon atoms and bonds of the carbon atoms, are planarly spread. Graphene is preferably used as heat transfer filler because of its high thermal conductivity and light weight.
Abstract:
An improvement is achieved in the performance of a semiconductor-device. The semiconductor device includes MISFETs formed in the upper surface of a substrate, a plurality of wiring layers stacked over the upper surface of the substrate, and a plurality of plugs each coupling two of the wiring layers to each other. The wiring layers located under the uppermost wiring layer include wires. The uppermost wiring layer includes a pad, an insulating film formed over the pad, and an opening extending through the insulating film and reaching the pad. The MISFETs and the wires overlap the opening in plan view. None of the plurality of plugs overlaps the opening in plan view.
Abstract:
A method for manufacturing a semiconductor device includes forming a first interconnect over the semiconductor substrate; forming an interlayer dielectric film over the first interconnect; forming a hole in the interlayer dielectric film such that the hole reaches the first interconnect; forming a trench in the interlayer dielectric film; and embedded a conductive film in the hole and the trench, thereby a via is formed in the hole and a second interconnect in the trench, wherein, in a planar view, the first interconnect extends in a first direction, wherein, in a planar view, the second interconnect extends in a second direction which is perpendicular to the first direction, and wherein a maximum width of the via in the second direction is larger than a maximum width of the via in the first direction.