Abstract:
This invention discloses a CMOS device, which includes: a first MOSFET; a second MOSFET different from the type of the first MOSFET; a first stressed layer covering the first MOSFET and having a first stress; and a second stressed layer covering the second MOSFET, wherein the second stressed layer is doped with ions, and thus has a second stress different from the first stress. This invention's CMOS device and method for manufacturing the same make use of a partitioned ion implantation method to realize a dual stress liner, without the need of removing the tensile stressed layer on the PMOS region or the compressive stressed layer on the NMOS region by photolithography/etching, thus simplifying the process and reducing the cost, and at the same time, preventing the stress in the liner on the NMOS region or PMOS region from the damage that might be caused by the thermal process of the deposition process.
Abstract:
A semiconductor device, a formation method thereof, and a package structure are provided. The semiconductor device comprises: a semiconductor substrate in which a metal-oxide-semiconductor field-effect transistor (MOSFET) is formed; a dielectric layer, provided on the semiconductor substrate and covering the MOSFET, wherein a plurality of interconnection structures are formed in the dielectric layer; and at least one heat dissipation path, embedded in the dielectric layer between the interconnection structures, for liquid or gas to circulate in the heat dissipation path, wherein openings of the heat dissipation path are exposed on the surface of the dielectric layer. The present invention can improve heat dissipation efficiency, and prevent chips from overheating.
Abstract:
The present invention discloses a method for manufacturing a semiconductor device, comprising: forming a gate stacked structure on a silicic substrate; depositing a Nickel-based metal layer on the substrate and the gate stacked structure; performing a first annealing so that the silicon in the substrate reacts with the Nickel-based metal layer to form a Ni-rich phase of metal silicide; performing an ion implantation by implanting doping ions into the Ni-rich phase of metal silicide; performing a second annealing so that the Ni-rich phase of metal to silicide is transformed into a Nickel-based metal silicide source/drain, and meanwhile, forming a segregation region of the doping ions at an interface between the Nickel-based metal silicide source/drain and the substrate. The method for manufacturing the semiconductor device according to the present invention performs the annealing after implanting the doping ions into the Ni-rich phase of metal silicide, thereby improving the solid solubility of the doping ions and forming a segregation region of highly concentrated doping ions, thus the SBH between the Nickel-based metal silicide and the silicon channel is effectively reduced, and the driving capability of the device is improved.
Abstract:
An apparatus and method for frequency division and filtering are provided. The apparatus includes a memory unit, an extrema calculation unit, and an envelope calculation unit. The memory unit is for storing sample data. The extrema calculation unit is for outputting and storing a number of maximum values and a number of minimum values to the memory unit according to the sample data. The envelope calculation unit is for calculating a mean envelope according to the maximum values and the minimum values, wherein within a duration when the envelope calculation unit respectively calculates an upper envelope and a lower envelope according to the maximum values and the minimum values, the envelope calculation unit outputs a value of the mean envelope to the memory unit according to a value of the upper envelope and a value of the lower envelope with respect to a corresponding identical address.
Abstract:
The present invention discloses a method for manufacturing a semiconductor device, comprising the steps of: forming a gate stack structure on a substrate; forming source and drain regions as well as a gate spacer on both sides of the gate stack structure; depositing a first metal layer on the source and drain regions; performing a first annealing such that the first metal layer reacts with the source and drain regions, to epitaxially grow a first metal silicide; depositing a second metal layer on the first metal silicide; and performing a second annealing such that the second metal layer reacts with the first metal silicide as well as the source and drain regions, to form a second metal silicide. In accordance with the method for manufacturing a semiconductor device of the present invention, by means of epitaxially growing an ultra-thin metal silicide on the source and drain regions, the grain boundaries among silicide particles are minimized or eliminated, the metal diffusion speed and direction are limited, thus the lateral growth of the metal silicide is suppressed and the device performance is further increased.
Abstract:
The invention provides a method for improving uniformity of chemical-mechanical planarization process, comprising the steps of: forming features on a substrate; forming a first dielectric isolation layer between the features; planarizing the first dielectric isolation layer until the features are exposed, causing the first dielectric isolation layer between the features to have a recess depth; forming a second dielectric isolation layer on the features and the first dielectric isolation layer, whereby reducing the difference in height between the second dielectric isolation layer between the features and the second dielectric isolation layer on the top of the features; planarizing the second dielectric isolation layer until the features are exposed. According to the method for improving uniformity of chemical-mechanical planarization process of the invention, a dielectric isolation layer is formed again after grinding the dielectric isolation layer on the top of the features, such that the difference in height between the dielectric layer between the features and the dielectric layer on the top of the features is effectively reduced, and the recess of the features is compensated, the within-in-die uniformity is effectively improved.
Abstract:
A method for eliminating contact bridge in a contact hole process is disclosed, wherein a cleaning menu comprising a multi-step adaptive protective thin film deposition process is provided, so that a stack adaptive protective thin film is formed on the sidewall of the chamber of the HDP CVD equipment. The stack adaptive protective thin film has good adhesivity, compactness and uniformity to protect the sidewall of the chamber of the HDP CVD equipment from being damaged by the plasma, and avoid the generation of defect particles, thereby improving the HDP CVD technical yield and eliminating the contact bridge phenomenon in the contact hole process.
Abstract:
A through-silicon via and a method for forming the same are provided. The method includes: providing a semiconductor substrate, the semiconductor substrate including an upper surface and an opposite lower surface; etching the upper surface of the semiconductor substrate to form an opening; filling the opening with a conductive material to form a first nail; etching the lower surface of the semiconductor substrate to form a recess, such that the first nail is exposed at a bottom of the recess; filling the recess with a conductive material that can be etched, and etching the conductive material that can be etched to form a second nail, such that the second nail is vertically connected with the first nail; and filling a gap between the second nail and the semiconductor substrate and a gap between the second nail and an adjacent second nail with a dielectric layer. Then invention can improve the reliability of through-silicon vias and avoid voids.
Abstract:
The invention provides a MOS transistor and a method for forming the MOS transistor. The MOS transistor includes a semiconductor substrate; a gate stack on the semiconductor substrate, and including a gate dielectric layer and a gate electrode on the semiconductor substrate in sequence; a source region and a drain region, respectively at sidewalls of the gate stack sidewalls of the gate stack and in the semiconductor; sacrificial metal spacers on sidewalls of the gate stack sidewalls of the gate stack, and having tensile stress or compressive stress. This invention scales down the equivalent oxide thickness, improves uniformity of device performance, raises carrier mobility and promotes device performance.
Abstract:
The present invention provides a method of manufacturing a dummy gate in a gate last process, which comprises the steps of forming a dummy gate material layer and a hard mask material layer sequentially on a substrate; etching the hard mask material layer to form a top-wide-bottom-narrow hard mask pattern; dry etching the dummy gate material layer using the hard mask pattern as a mask to form a top-wide-bottom-narrow dummy gate. According to the dummy gate manufacturing method of the present invention, instead of vertical dummy gates used conventionally, top-wide-bottom-narrow trapezoidal dummy gates are formed, and after removing the dummy gates, trapezoidal trenches can be formed. It facilitates the subsequent filling of the high-k or metal gate material and enlarges the window for the filling process; as a result, the device reliability will be improved.