LIQUID CRYSTAL DISPLAY DEVICE
First Claim
1. A semiconductor device comprising:
- a gate electrode;
a gate insulating film formed over the gate electrode;
a microcrystalline semiconductor film including a channel formation region formed over the gate insulating film;
a channel protective layer which is formed over the channel formation region of the microcrystalline semiconductor film;
a source region and a drain region formed over the channel protective layer; and
a source electrode and a drain electrode formed over the source region and the drain region,an insulating film formed over the channel protective layer, the source electrode, and the drain electrode,wherein end portions of the microcrystalline semiconductor film which is formed to overlap with the gate electrode are positioned more inwardly than end portions of the gate electrode.
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Abstract
It is an object to provide a liquid crystal display device including a thin film transistor with high electric characteristics and high reliability. As for a liquid crystal display device including an inverted staggered thin film transistor of a channel stop type, the inverted staggered thin film transistor includes a gate electrode, a gate insulating film over the gate electrode, a microcrystalline semiconductor film including a channel formation region over the gate insulating film, a buffer layer over the microcrystalline semiconductor film, and a channel protective layer which is formed over the buffer layer so as to overlap with the channel formation region of the microcrystalline semiconductor film.
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Citations
20 Claims
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1. A semiconductor device comprising:
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a gate electrode; a gate insulating film formed over the gate electrode; a microcrystalline semiconductor film including a channel formation region formed over the gate insulating film; a channel protective layer which is formed over the channel formation region of the microcrystalline semiconductor film; a source region and a drain region formed over the channel protective layer; and a source electrode and a drain electrode formed over the source region and the drain region, an insulating film formed over the channel protective layer, the source electrode, and the drain electrode, wherein end portions of the microcrystalline semiconductor film which is formed to overlap with the gate electrode are positioned more inwardly than end portions of the gate electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A semiconductor device comprising:
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a gate electrode; a gate insulating film formed over the gate electrode; a microcrystalline semiconductor film including a channel formation region formed over the gate insulating film; a channel protective layer which is formed over the channel formation region of the microcrystalline semiconductor film; a source region and a drain region formed over the channel protective layer; a source electrode and a drain electrode formed over the source region and the drain region; and an insulating film formed over the channel protective layer, the source electrode, and the drain electrode, wherein the source and drain regions extend beyond edges of the source and drain electrodes, and wherein a distance between edges of the source and drain regions facing each other is shorter than a distance between the edges of the source and drain electrodes facing each other. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification