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

Claim 14:
15. A structure comprising:
a deep well structure having a first impurity, wherein the deep well structure is positioned in a first layer;
well rows above and contacting the deep well structure, wherein the well rows are positioned in a second layer above and parallel to the first layer, 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 are within the second layer, 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 is within the second layer, wherein the well contact ring encloses an enclosed area, and wherein the well rows are within the enclosed area;
a transistor layer positioned in a third layer above and parallel to the first layer and second layer, wherein the transistor layer comprises a dielectric material, and wherein the second layer is between the first layer and the third layer;
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, wherein the well contact connection is positioned on the transistor layer in a fourth layer parallel to the first layer, the second layer, and the third layer, and wherein the third layer is between the second layer and the fourth layer.