Vertical channel fin field-effect transistors having increased source/drain contact area and methods for fabricating the same
First Claim
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1. A FinFET device, comprising:
- a fin-shaped active region having first and second source/drain regions therein and a channel region therebetween vertically protruding from a semiconductor substrate;
a gate electrode on an upper surface and sidewalls of the channel region; and
first and second source/drain contacts on respective upper surfaces and sidewalls of the first and second source/drain regions of the fin-shaped active region at opposite sides of the gate electrode.
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Abstract
A fin field-effect transistor (FinFET) device includes a fin-shaped active region having first and second source/drain regions therein and a channel region therebetween vertically protruding from a semiconductor substrate. A gate electrode is formed on an upper surface and sidewalls of the channel region. First and second source/drain contacts are formed on respective upper surfaces and sidewalls of the first and second source/drain regions of the fin-shaped active region at opposite sides of the gate electrode. The channel region may be narrower than the first and second source/drain regions of the fin-shaped active region.
82 Citations
25 Claims
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1. A FinFET device, comprising:
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a fin-shaped active region having first and second source/drain regions therein and a channel region therebetween vertically protruding from a semiconductor substrate;
a gate electrode on an upper surface and sidewalls of the channel region; and
first and second source/drain contacts on respective upper surfaces and sidewalls of the first and second source/drain regions of the fin-shaped active region at opposite sides of the gate electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A Fin FET device, comprising:
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a semiconductor substrate;
a fin-shaped active region vertically extending from the semiconductor substrate;
a device isolation layer adjacent sidewalls of the fin-shaped active region;
a gate electrode on an upper surface and sidewalls of the fin-shaped active region;
sidewall spacers on sidewalls of the gate electrode; and
source/drain regions in the fin-shaped active region at opposite sides of the gate electrode, wherein upper surfaces and sidewalls of the fin-shaped active region are exposed at the source/drain regions.
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11. A method of forming a fin field-effect transistor, comprising:
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forming a fin-shaped active region having first and second source/drain regions therein and a channel region therebetween vertically protruding from a semiconductor substrate;
forming a gate electrode on an upper surface and sidewalls of the channel region; and
forming first and second source/drain contacts at opposite sides of the gate electrode on respective upper surfaces and sidewalls of the first and second source/drain regions of the fin-shaped active region. - View Dependent Claims (12, 13, 14)
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15. A method of forming a FinFET, comprising:
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forming a fin-shaped active region vertically protruding from a semiconductor substrate;
forming a device isolation layer on the fin-shaped active region, the device isolation layer having a trench therein exposing a first portion of the fin-shaped active region including an upper surface and sidewalls thereof;
forming a gate electrode in the trench on the upper surface and sidewalls of the first portion of the fin-shaped active region;
forming first and second source/drain regions in second portions of the fin-shaped active region at opposite sides of the gate electrode; and
recessing the device isolation layer at opposite sides of the gate electrode to expose upper surfaces and sidewalls of the second portions of the fin-shaped active region. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification