Meyertons, Hood Kivlin, Kowert & Goetzel, P.C.
Electrostatic discharge (ESD) silicon controlled rectifier (SCR) with lateral gated section
In an embodiment, an ESD protection circuit may include an STI-bound SCR and a gated SCR that may be electrically in parallel with the STI-bound SCR. The gated SCR may be perpendicular to the STI-bound SCR in a plane of the semiconductor substrate. In an embodiment, the gated SCR may trigger more quickly and turn on more quickly than the STI-bound SCR. The STI-bound SCR may form the main current path for an ESD event. A low capacitive load with rapid response to ESD events may thus be formed. In an embodiment, the anode of the two SCRs may be shared.
Apple Inc.
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Xiaofeng Xin Yi Junjun
Fan Zhang Li