Title:
ELECTROSTATIC DISCHARGE PROTECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/093701
Kind Code:
A1
Abstract:
The present disclosure provides an electrostatic discharge protection device. The electrostatic discharge protection device comprises a substrate and a gate structure located on the substrate, wherein a first well region and a second well region connected to each other are formed in the substrate, the first well region has a first conductivity type, and the second well region has a second conductivity type; the gate structure spans from above part of the first well region to above part of the second well region, a first doped region and a second doped region located on one side of the gate structure are formed at the top of the first well region, the first doped region has a first conductivity type, and the second doped region has a second conductivity type; a third doped region and a fourth doped region located on the other side of the gate structure are formed at the top of the second well region, the third doped region has a first conductivity type, and the fourth doped region has a second conductivity type. In this way, a first parasitic triode and a second parasitic triode for discharging static electricity can be formed in the electrostatic discharge protection device, which facilitates improvement of the electrostatic discharge capability of a circuit.
Inventors:
HUANG YONG (CN)
HUANG LU (CN)
ZHOU WANYI (CN)
BI RUI (CN)
WU LIN (CN)
SHI HAILI (CN)
GUO LELE (CN)
ZHU LIJUAN (CN)
HUANG LU (CN)
ZHOU WANYI (CN)
BI RUI (CN)
WU LIN (CN)
SHI HAILI (CN)
GUO LELE (CN)
ZHU LIJUAN (CN)
Application Number:
PCT/CN2023/125966
Publication Date:
May 10, 2024
Filing Date:
October 23, 2023
Export Citation:
Assignee:
CSMC TECHNOLOGIES FAB2 CO LTD (CN)
International Classes:
H01L23/60
Foreign References:
| CN207938608U | 2018-10-02 | |||
| CN205319155U | 2016-06-15 | |||
| CN102832233A | 2012-12-19 | |||
| US20190304966A1 | 2019-10-03 |
Attorney, Agent or Firm:
BEIJING BESTIPR INTELLECTUAL PROPERTY LAW CORPORATION (CN)
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