Patent ID: 6757208
Filing Date: 2004-06-29
Classification: G11C

Abstract:
A dual-bit nitride read only memory cell with parasitic amplifier, comprising:a semiconductor substrate; a first well region disposed in the semiconductor substrate and having a first conductive type opposite to the semiconductor substrate; a second well region disposed in the first well region and having a second conductive type opposite to the first well region; a gate dielectric layer disposed over portions of the second well region, wherein the gate dielectric layer comprises a nitride layer; a conductive layer disposed on the gate dielectric layer to form a gate; and a pair of first doped regions symmetrically disposed in the second well region on both sides of the gate and having a third conductive type opposite to the second well region, wherein one of the first doped regions, the second well region and the first well region constitute a parasitic current amplifier.