Transistor having recess channel and fabricating method thereof
First Claim
Patent Images
1. A transistor, comprising:
- a substrate including a trench;
an insulation layer filled in a portion of the trench, wherein a top surface of the insulation layer comprises a ‘
V’
shape and a bottom surface comprising a rounded shape;
a gate insulation layer formed over inner sidewalls of the trench, the gate insulation layer having a width that is less than thicknesses of the insulation layer, the insulation layer being disposed below the gate insulation layer; and
a gate electrode filled in the trench.
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Abstract
A transistor includes a substrate including a trench, an insulation layer filled in a portion of the trench, the insulation layer having a greater thickness over an edge portion of a bottom surface of the trench than over a middle portion of the bottom surface of the trench, a gate insulation layer formed over inner sidewalls of the trench, the gate insulation layer having a thickness smaller than the insulation layer, and a gate electrode filled in the trench.
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Citations
20 Claims
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1. A transistor, comprising:
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a substrate including a trench; an insulation layer filled in a portion of the trench, wherein a top surface of the insulation layer comprises a ‘
V’
shape and a bottom surface comprising a rounded shape;a gate insulation layer formed over inner sidewalls of the trench, the gate insulation layer having a width that is less than thicknesses of the insulation layer, the insulation layer being disposed below the gate insulation layer; and a gate electrode filled in the trench. - View Dependent Claims (2, 3, 4, 5, 6, 13, 14, 18)
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7. A transistor, comprising:
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a substrate including a trench; an insulation layer filled in a portion of the trench, wherein a top surface of the insulation layer comprises a ‘
V’
shape and a bottom surface comprising a rounded shape;a gate insulation layer formed over inner sidewalls of the trench, the gate insulation layer having a width that is less than thicknesses of the insulation layer, the insulation layer being disposed below the gate insulation layer; and a gate electrode filled in the trench. - View Dependent Claims (8, 9, 10, 11, 12, 19)
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15. A transistor, comprising:
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a substrate comprising a trench; an insulation layer in a portion of the trench, wherein a top surface of the insulation layer comprises a ‘
V’
shape and a bottom surface comprising a rounded shape;a gate insulation layer formed over inner sidewalls of the trench and comprising a width that is less than thicknesses of the insulation layer, wherein the insulation layer is under the gate insulation layer; and a gate electrode in the trench. - View Dependent Claims (16, 17, 20)
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Specification