Patent ID: 6242772
Filing Date: 2001-06-05
Classification: G11C

Abstract:
A semiconductor structure comprising:first and second polysilicon word lines in a first layer extending in a first direction;first and second diffusion region in a second layer extending in a second direction, wherein a first transistor and a second transistor are formed at the intersections of the first polysilicon word line and the first and second diffusion regions, respectively, and third and fourth transistors are formed at the intersections of the second polysilicon word line and the first and second diffusion regions, respectively;third and fourth polysilicon regions in a third layer below the first layer, wherein the third polysilicon region is coupled to the first transistor to form a first terminal of a first capacitor and the fourth polysilicon region is coupled to the fourth transistor to form a first terminal of a second capacitor;third and fourth diffusion regions in a fourth layer below the second layer, the third diffusion region being coupled to the second transistor to form a second terminal of the first capacitor, and the fourth diffusion region being coupled to the third transistor to form a second terminal of the second capacitor; anda fifth diffusion region in the fourth layer, the fifth diffusion region being coupled to a reference potential.