摘要:
A process for producing an image display device using a thin film semiconductor device is provided which includes forming a polycrystalline semiconductor thin film on a substrate. A substantially belt-shaped crystal is formed which is crystallized so as to grow crystal grains in a direction substantially parallel to a scanning direction of a CW laser beam by scanning the CW laser beam along the substrate, thereby irradiating the CW laser beam on portions of the polycrystalline semiconductor thin film formed onto the substrate.
摘要:
A process for producing an image display device using a thin film semiconductor device is provided which includes forming a polycrystalline semiconductor thin film on a substrate. A substantially belt-shaped crystal is formed which is crystallized so as to grow crystal grains in a direction substantially parallel to a scanning direction of a CW laser beam by scanning the CW laser beam along the substrate, thereby irradiating the CW laser beam on portions of the polycrystalline semiconductor thin film formed onto the substrate.
摘要:
A process for producing an image display device using a thin film semiconductor device is provided which includes forming a polycrystalline semiconductor thin film on a substrate. A substantially belt-shaped crystal is formed which is crystallized so as to grow crystal grains in a direction substantially parallel to a scanning direction of a CW laser beam by scanning the CW laser beam along the substrate, thereby irradiating the CW laser beam on portions of the polycrystalline semiconductor thin film formed onto the substrate.
摘要:
The silicon wires formed around metal particles by crystal growth have the problem of metal pollution. For its solution, in the present invention, a silicon bridge is formed through standard silicon processes such as the lithography and the wet etching using hydrofluoric acid performed to an SOI substrate. Thereafter, a thermal oxide film is desirably formed at a high temperature to form a high-quality gate insulating film. It is also desirable to form a coaxial gate electrode. Then, after burying the bridge sections of the silicon bridge in a resist film, the silicon on the bridge girders is removed, and thereafter, the silicon wires buried in the resist film are collected. In this manner, the silicon wires can be collected without dispersing into the hydrofluoric acid solution. Then, a transistor using the silicon wires as a channel is formed.
摘要:
The silicon wires formed around metal particles by crystal growth have the problem of metal pollution. For its solution, in the present invention, a silicon bridge is formed through standard silicon processes such as the lithography and the wet etching using hydrofluoric acid performed to an SOI substrate. Thereafter, a thermal oxide film is desirably formed at a high temperature to form a high-quality gate insulating film. It is also desirable to form a coaxial gate electrode. Then, after burying the bridge sections of the silicon bridge in a resist film, the silicon on the bridge girders is removed, and thereafter, the silicon wires buried in the resist film are collected. In this manner, the silicon wires can be collected without dispersing into the hydrofluoric acid solution. Then, a transistor using the silicon wires as a channel is formed.
摘要:
In an MIS field effect transistor having a gate electrode formed on a first semiconductor layer which is a polycrystalline silicon film on an insulating substrate through a gate insulating film, a channel region formed in the semiconductor layer and a source region and a drain region arranged on both sides of the channel region, a thin film semiconductor device has a main orientation of at least the channel region of {110} with respect to the surface of the gate insulating film. Further, a polycrystalline semiconductor film having a main orientation of the surface almost perpendicular to a direction for connecting the source and drain regions of {100} is preferably used in the channel of a semiconductor device. According to the present invention, a semiconductor device having a high-quality polycrystalline semiconductor film whose grain boundary, grain size and crystal orientation can be controlled and whose film roughness and crystal defects formed by crystallization have been reduced can be obtained on the insulating substrate.