Semiconductor device and method of fabricating the same
First Claim
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1. A semiconductor device comprising:
- a first silicon layer formed on a semiconductor substrate through a gate insulator film with an upper portion and a lower portion larger in width than a central portion for serving as a gate electrode; and
a first silicide film formed on said first silicon layer for serving as said gate electrode, whereinsaid first silicon layer serving as said gate electrode includes said upper portion having a reverse mesa shape and said lower portion having a forward mesa shape.
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Abstract
A semiconductor device capable of suppressing increase of the capacitance while suppressing a thin-line effect of a silicide film is obtained. This semiconductor device comprises a first silicon layer formed on a semiconductor substrate through a gate insulator film with an upper portion and a lower portion larger in width than a central portion for serving as a gate electrode and a first silicide film formed on the first silicon layer for serving as the gate electrode.
8 Citations
17 Claims
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1. A semiconductor device comprising:
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a first silicon layer formed on a semiconductor substrate through a gate insulator film with an upper portion and a lower portion larger in width than a central portion for serving as a gate electrode; and a first silicide film formed on said first silicon layer for serving as said gate electrode, wherein said first silicon layer serving as said gate electrode includes said upper portion having a reverse mesa shape and said lower portion having a forward mesa shape. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A semiconductor device comprising:
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a semiconductor substrate; a gate electrode, consisting of a single metal layer, formed on said semiconductor substrate through a gate insulator film with an upper potion and a lower portion larger in width than a central portion, wherein the gate electrode, consisting of a single metal layer, includes an upper portion having a reverse mesa shape and a lower portion having a forward mesa shape.
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11. A semiconductor device comprising:
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a first conductive layer formed on a semiconductor substrate with an upper potion and a lower portion larger in width than a central portion; and a second conductive layer formed on said semiconductor substrate at a prescribed interval from said first conductive layer with an upper potion and a lower portion larger in width than a central portion, wherein the first conductive layer includes an upper portion having a reverse mesa shape and a lower portion having a forward mesa shape. - View Dependent Claims (12)
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13. A semiconductor device comprising:
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a first silicon layer formed on a semiconductor substrate through a gate insulator film with an upper portion and a lower portion larger in width than a central portion for serving as a gate electrode; and a first silicide film formed on said first silicon layer for serving as said gate electrode, wherein the width of said lower portion of said first silicon layer is smaller than the width of said upper portion of said first silicon layer.
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14. A semiconductor device comprising:
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a first silicon layer formed on a semiconductor substrate through a gate insulator film with an upper portion and a lower portion larger in width than a central portion for serving as a gate electrode; a first silicide film formed on said first silicon layer for serving as said gate electrode; a second silicon layer formed at a prescribed interval from said gate electrode with an upper portion and a lower portion larger in width than a central portion for serving as a wire; and a second silicide film formed on said second silicon layer for serving as said wire. - View Dependent Claims (15, 16, 17)
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Specification