High-voltage ESD (electro-static discharge) protective device triggered by bidirectional substrate
An ESD protection, high-voltage technology, applied in the direction of electric solid devices, semiconductor devices, electrical components, etc., to achieve the effect of reducing on-resistance, strong current discharge ability, and expanding the scope of application
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[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments:
[0027] The present invention proposes a bidirectional substrate-triggered high-voltage ESD protection device. Due to the special design of the internal structure and the optimization of the layout level, the example device of the present invention has the SCR structure ESD protection device with fast turn-on speed, low on-resistance, and low on-resistance. The advantage of large secondary breakdown current and its internal parasitic NPN structure can provide high maintenance voltage for LDMOS devices, which further increases the robustness of the device. Expand the scope of application of the device of the present invention.
[0028] like figure 1 As shown, it is a cross-sectional view of the internal structure of the device of the present invention, which is mainly composed of a substrate Psub 101, a high-voltage deep N-well 102, a ...
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