Patent ID: 7378717
Filing Date: 2008-05-27
Classification: H01L,Y02E,Y02P

Abstract:
1. A semiconductor structure, comprising: (a) a semiconductor substrate; (b) at least first and second electrode blocks in the semiconductor substrate, wherein the first electrode block comprises first, second, and third electrodes, wherein the second electrode block comprises fourth, fifth, and sixth electrodes, wherein the first and fourth electrodes are in direct physical contact with the semiconductor substrate at a first depth in the semiconductor substrate, wherein the second and fifth electrodes are in direct physical contact with the semiconductor substrate at a second depth in the semiconductor substrate, wherein the third and sixth electrodes are in direct physical contact with the semiconductor substrate at a third depth in the semiconductor substrate, and wherein the first depth is greater than the second depth, and the second depth is greater than the third depth; and (c) a semiconducting block in the semiconductor substrate, wherein the semiconducting block is disposed between the first and second electrode blocks, wherein the semiconducting block comprises first, second, and third semiconducting regions, wherein the first semiconducting region is disposed between and in direct physical contact with the first and fourth electrodes, wherein the second semiconducting region is disposed between and in direct physical contact with the second and fifth electrodes, wherein the third semiconducting region is disposed between and in direct physical contact with the third and sixth electrodes, wherein the first, second, and third semiconducting regions are in direct physical contact with each other, wherein there is no portion of the first, second, third, fourth, fifth and sixth electrodes disposed between the first and second semiconducting regions, and wherein there is no portion of the first, second, third, fourth, fifth and sixth electrodes disposed between the second and third semiconducting regions.