Patent ID: 7602004
Filing Date: 2009-10-13
Classification: G11C

Abstract:
1. A semiconductor device comprising: a first transistor and a second transistor formed on a substrate, each of the first transistor and the second transistor having a first source/first drain region of a first conductivity type, a gate and a spacer on a sidewall of the gate, wherein the first source/first drain region in the first transistor includes a first portion disposed under the spacer and a second portion not covered by the spacer, the first portion between the second portion and the gate, and wherein the first transistor is an off-transistor including a second source/second drain region of the first conductivity type, the second source/second drain region surrounding the first portion of the first source/first drain region and at least of the second portion of the first source/first drain region in the first transistor.