Electrostatic discharge protection device and electrostatic discharge protection circuit thereof
First Claim
Patent Images
1. An electrostatic discharge (ESD) protection device, comprising:
- a substrate, having a first conductive type, and the substrate being electrically connected to a first power node;
a well, having a second conductive type and disposed in the substrate;
a first doped region, having the first conductive type and disposed in the well, and the first doped region and the well being electrically connected to a second power node; and
a second doped region, having the second conductive type and disposed in the substrate; and
the second doped region being in a floating state and being spaced apart from the well.
1 Assignment
0 Petitions
Accused Products
Abstract
The ESD protection device includes a substrate, a well, a first doped region and a second doped region. The substrate has a first conductive type, and the substrate is electrically connected to a first power node. The well has a second conductive type, and is disposed in the substrate. The first doped region has the first conductive type, and is disposed in the well. The first doped region and the well are electrically connected to a second power node. The second doped region has the second conductive type, and is disposed in the substrate. The second doped region is in a floating state.
-
Citations
12 Claims
-
1. An electrostatic discharge (ESD) protection device, comprising:
-
a substrate, having a first conductive type, and the substrate being electrically connected to a first power node; a well, having a second conductive type and disposed in the substrate; a first doped region, having the first conductive type and disposed in the well, and the first doped region and the well being electrically connected to a second power node; and a second doped region, having the second conductive type and disposed in the substrate; and
the second doped region being in a floating state and being spaced apart from the well. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An ESD protection circuit, comprising:
-
a first BJT, having a first type and having a first base, a first emitter and a first collector, wherein the first emitter is electrically connected to the second power node; a second BJT, having a second type different from the first type and having a second base, a second emitter and a second collector, wherein the second collector is electrically connected to the first base, and the second base is electrically connected to the first collector; and a diode, having an anode and a cathode, wherein the anode is electrically connected to the second emitter, and the cathode is electrically connected to the first power node. - View Dependent Claims (12)
-
Specification