SEMICONDUCTOR DEVICE AND METHOD FOR FABRICATING THE SAME
First Claim
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1. A method for fabricating a semiconductor device, the method comprising:
- forming a gate insulation layer on a substrate including a first region and a second region;
forming a first gate conductive layer and a capping layer on the first region and the second region and heat-treating the substrate;
removing the capping layer from the first region and the second region;
forming a second gate conductive layer on the first region and the second region;
nitriding the second gate conductive layer; and
forming a third gate conductive layer on the second region.
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Abstract
A method for fabricating a semiconductor device comprises forming a gate insulation layer on a substrate including a first region and a second region, forming a first gate conductive layer and a capping layer on the first region and the second region and heat-treating the substrate, removing the capping layer from the first region and the second region, forming a second gate conductive layer on the first region and the second region, nitriding the second gate conductive layer, and forming a third gate conductive layer on the second region.
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Citations
16 Claims
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1. A method for fabricating a semiconductor device, the method comprising:
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forming a gate insulation layer on a substrate including a first region and a second region; forming a first gate conductive layer and a capping layer on the first region and the second region and heat-treating the substrate; removing the capping layer from the first region and the second region; forming a second gate conductive layer on the first region and the second region; nitriding the second gate conductive layer; and forming a third gate conductive layer on the second region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for fabricating a semiconductor device, the method comprising:
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forming a gate insulation layer on a substrate including a first region and a second region; forming a first gate conductive layer and a capping layer on the first region and the second region and heat-treating the substrate; removing the first gate conductive layer and the capping layer from the first region and the second region; forming a second gate conductive layer on the first region and the second region; forming a third gate conductive layer on the second region; and nitriding the second gate conductive layer of the first region. - View Dependent Claims (11, 12, 13)
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14. A method for fabricating a semiconductor device, the method comprising:
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forming a first fin type active pattern and a second fin type active pattern on a substrate; forming a first trench crossing the first fin type active pattern on the first fin type active pattern and forming a second trench crossing the second fin type active pattern on the second fin type active pattern; forming a first TaN layer along lateral surfaces and a bottom surface of the first trench and forming a second TaN layer along lateral surfaces and a bottom surface of the second trench; implanting a nitride gas on the first TaN layer and the second TaN layer; forming a TiN layer on the second TaN layer; and implanting a nitride gas on the first TaN layer and the TiN layer. - View Dependent Claims (15)
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16-20. -20. (canceled)
Specification