US Patent 11562953 Cell having stacked pick-up region

An integrated circuit includes two parallel active zones extending in a first direction, an n-type pick-up region, and a p-type pick-up region. The two parallel active zones includes a p-type active zone located in an n-type well and an n-type active zone located in a p-type well. The n-type pick-up region is located in the n-type well and configured to have a first supply voltage. The p-type pick-up region is located in the p-type well and configured to have a second supply voltage, wherein the second supply voltage is lower than the first supply voltage. The n-type pick-up region and the p-type pick-up region are separated from each other along a direction that is different from the first direction.