Semiconductor device
First Claim
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1. A semiconductor device comprising:
- a substrate;
a core device over the substrate and comprising a first gate electrode having a bottom surface and a sidewall, wherein the bottom surface of the first gate electrode and the sidewall of the first gate electrode define inside the first gate electrode a first interior angle, and the first interior angle is an obtuse angle; and
an input/output (I/O) device over the substrate and comprising a second gate electrode having a bottom surface and a sidewall, wherein the bottom surface of the second gate electrode and the sidewall of the second gate electrode define inside the second gate electrode a second interior angle, and the second interior angle is greater than the first interior angle.
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Abstract
A semiconductor device includes a substrate, a core device disposed above the substrate, and an input/output (I/O) device disposed above the substrate. The core device includes a first gate electrode having a bottom surface and a sidewall that define a first interior angle therebetween. The first interior angle is an obtuse angle. The I/O device includes a second gate electrode having a bottom surface and a sidewall that define a second interior angle therebetween. The second interior angle is greater than the first interior angle.
38 Citations
20 Claims
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1. A semiconductor device comprising:
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a substrate; a core device over the substrate and comprising a first gate electrode having a bottom surface and a sidewall, wherein the bottom surface of the first gate electrode and the sidewall of the first gate electrode define inside the first gate electrode a first interior angle, and the first interior angle is an obtuse angle; and an input/output (I/O) device over the substrate and comprising a second gate electrode having a bottom surface and a sidewall, wherein the bottom surface of the second gate electrode and the sidewall of the second gate electrode define inside the second gate electrode a second interior angle, and the second interior angle is greater than the first interior angle. - View Dependent Claims (2, 3, 4, 5)
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6. A semiconductor device comprising:
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a substrate; a core device over the substrate and comprising a first gate electrode having a bottom surface and a sidewall, wherein the bottom surface of the first gate electrode and the sidewall of the first gate electrode define inside the first gate electrode a first interior angle; and an input/output (I/O) device over the substrate and comprising a second gate electrode having a bottom surface and a sidewall, wherein the bottom surface of the second gate electrode and the sidewall of the second gate electrode define inside the second gate electrode a second interior angle, and the second interior angle and the first interior angle both are obtuse angles but have different values. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A semiconductor device comprising:
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a substrate; a core device over the substrate and comprising a first gate electrode having a top surface and a bottom surface; and an input/output (I/O) device over the substrate and comprising a second gate electrode having a top surface and a bottom surface, wherein a width of the top surface of the first gate electrode is less than a width of the top surface of the second gate electrode, and a width of the bottom surface of the second gate electrode is less than the width of the top surface of the second gate electrode. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification