Patent ID: 11929399
Assignee: GLOBALFOUNDRIES U.S. INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A structure comprising:
a deep well structure having a first impurity;
well rows above and contacting the deep well structure, wherein the well rows have a second impurity, wherein the first impurity and the second impurity have opposite polarities;
isolation structures extending from the deep well structure in areas between the well rows, wherein the isolation structures physically contact the well rows, and wherein the isolation structures insulate adjacent well rows from each other;
a well contact ring above and contacting the deep well structure, wherein the well contact ring encloses an enclosed area, and wherein the well rows are within the enclosed area;
a transistor layer comprising a dielectric material on the well rows and the isolation structures;
transistors within the transistor layer, wherein adjacent ones of the transistors have opposite polarities;
at least one ring-enclosed contact above and contacting the deep well structure, wherein the ring-enclosed contact is positioned within the enclosed area and has a greater height above the deep well structure than the well rows and the well contact ring; and
a well contact connection connected to the well contact ring and the ring-enclosed contact ring, wherein the well contact connection is positioned on the transistor layer.