ELECTROSTATIC DISCHARGE PROTECTION DEVICE
First Claim
1. An electrostatic discharge protection device, comprising:
- a substrate having a first conductive type;
a first doped region having a second conductive type and formed in the substrate;
a first gate electrode formed on the substrate;
a second doped region having the second conductive type and formed in the substrate, wherein a transistor is constituted by the first doped region, the first gate electrode, and the second doped region;
a second gate electrode formed on the substrate, wherein the first and the second gate electrodes are separated; and
a third doped region having the first conductive type and formed in the substrate, wherein a discharge element is constituted by the first doped region, the second gate electrode, and the third doped region.
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Abstract
An electrostatic discharge protection device including a substrate, a first doped region, a first gate electrode, a second doped region, a second gate electrode, and a third doped region is disclosed. The substrate has a first conductive type. The first doped region has a second conductive type and is formed in the substrate. The first gate electrode is formed on the substrate. The second doped region has the second conductive type and is formed in the substrate. A transistor is constituted by the first doped region, the first gate electrode, and the second doped region. The second gate electrode is formed on the substrate. The first and the second gate electrodes are separated. The third doped region has the first conductive type and is formed in the substrate. A discharge element is constituted by the first doped region, the second gate electrode, and the third doped region.
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Citations
24 Claims
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1. An electrostatic discharge protection device, comprising:
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a substrate having a first conductive type; a first doped region having a second conductive type and formed in the substrate; a first gate electrode formed on the substrate; a second doped region having the second conductive type and formed in the substrate, wherein a transistor is constituted by the first doped region, the first gate electrode, and the second doped region; a second gate electrode formed on the substrate, wherein the first and the second gate electrodes are separated; and a third doped region having the first conductive type and formed in the substrate, wherein a discharge element is constituted by the first doped region, the second gate electrode, and the third doped region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An electrostatic discharge protection device, comprising:
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a substrate having a first conductive type; a first doped region having a second conductive type and formed in the substrate; a first gate electrode formed on the substrate; a second doped region having the second conductive type and formed in the substrate, wherein a transistor is constituted by the first doped region, the first gate electrode, and the second doped region; a third doped region having the first conductive type and formed in the substrate, wherein the second and the third doped regions are separated; and a fourth doped region having the second conductive type and formed in the substrate, wherein the second and the fourth doped regions are separated, and a discharge element is constituted by the first, the third, and the fourth doped regions and the second gate electrode. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification