An object is to provide a semiconductor device of which a manufacturing process is not complicated and by which cost can be suppressed, by forming a thin film transistor using an oxide semiconductor film typified by zinc oxide, and a manufacturing method thereof. For the semiconductor device, a gate electrode is formed over a substrate; a gate insulating film is formed covering the gate electrode; an oxide semiconductor film is formed over the gate insulating film; and a first conductive film and a second conductive film are formed over the oxide semiconductor film. The oxide semiconductor film has at least a crystallized region in a channel region.

Semiconductor device, and manufacturing method thereof

A semiconductor device includes a via structure and a conductive structure. The via structure has a surface with a planar portion and a protrusion portion. The conductive structure is formed over at least part of the planar portion and not over at least part of the protrusion portion of the via structure. For example, the conductive structure is formed only onto the planar portion and not onto any of the protrusion portion for forming high quality connection between the conductive structure and the via structure.

Semiconductor Device and Method of Fabricating the Same

A transistor includes a first fin structure and at least a second fin structure formed on a substrate. A deep trench area is formed between the first and second fin structures. The deep trench area extends through an insulator layer of the substrate and a semiconductor layer of the substrate. A high-k metal gate is formed within the deep trench area. A polysilicon layer is formed within the deep trench area adjacent to the metal layer. The polysilicon layer and the high-k metal layer are recessed below a top surface of the insulator layer. A poly strap in the deep trench area is formed on top of the high-k metal gate and the polysilicon material. The poly strap is dimensioned to be below a top surface of the first and second fin structures. The first fin structure and the second fin structure are electrically coupled to the poly strap.

Structure and method to integrate embedded dram with finfet

A mask is formed selectively on a crystalline silicon film containing a catalyst element, and an amorphous silicon film is formed so as to cover the mask. Phosphorus is implanted into the amorphous silicon film and the portion of the crystalline silicon film which is not covered with the mask. The silicon films are then heated by rapid thermal annealing (RTA). By virtue of the existence of the amorphous silicon film, the temperature of the crystalline silicon film is increased uniformly, whereby the portion of the crystalline silicon film covered with the mask is also heated sufficiently and the catalyst element existing in this region moves to the phosphorus-implanted, amorphous portion having high gettering ability. As a result, the concentration of the catalyst element is reduced in the portion of the silicon film covered with the mask. A semiconductor device is manufactured by using this portion.

Method of Manufacturing Semiconductor Device

Multi-layered carbon-based hardmask and method to form the same. The multi-layered carbon-based hardmask includes at least top and bottom carbon-based hardmask layers having different refractive indexes. The top and bottom carbon-based hardmask layer thicknesses and refractive indexes are tuned so that the top carbon-based hardmask layer serves as an anti-reflective coating (ARC) layer.

Lithographic patterning for sub-90nm with a multi-layered carbon-based hardmask

A method for forming shallow trench isolation (STI) for semiconductor devices. A first hard mask is deposited over a semiconductor wafer, and a second hard mask is deposited over the first hard mask. The semiconductor wafer includes a first etching zone and at least a second etching zone disposed beneath the first etching zone. The etch process for the first etching zone and the etch process for the at least one second etching zone are selected such that smooth sidewall surface structures are formed within the semiconductor device. The etch processes for each subsequent etching zone may alternate between non-selective and selective etch processes to preserve at least the first hard mask material.

STI formation for vertical and planar transistors

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STI formation for vertical and planar transistors