Pkt. Mok et al., A SELF-ALIGNED TRENCHED CATHODE LATERAL INSULATED GATE BIPOLAR-TRANSISTOR WITH HIGH LATCH-UP RESISTANCE, I.E.E.E. transactions on electron devices, 42(12), 1995, pp. 2236-2239
This paper discusses a modified insulated gate bipolar transistor (LIG
BT) structure using a self-aligned trenched contact at the cathode of
the device which significantly reduces the parasitic p-base resistance
underneath the n(+) cathode region to suppress the latch-up, The tren
ched cathode LIGBT (TC-LIGBT) structure is BiCMOS compatible and the L
IGBT's with latching current densities over 1200 A/cm(2) have been obt
ained using a 4 mu m technology.