Semiconductor device having mesh-patterned wirings
AssigneeSocionext Inc.
InventorEiji Kondo
Life of this patent
Estimating the term…
Abstract
A semiconductor device includes a mesh-patterned power source wiring that supplies respective circuits with a power source voltage supplied to a plurality of locations at an outer periphery of the semiconductor device. The semiconductor device also includes a back-biasing wiring supplying, to a semiconductor substrate, a substrate voltage that controls a threshold voltage of a semiconductor element. The back-biasing wiring includes a upper layer mesh wiring that receives a supply of a substrate voltage, and a lower layer mesh wiring that is provided in a different wiring layer from the upper layer mesh wiring. The outer peripheries of the upper layer mesh wiring and the lower layer mesh wiring are connected to each other through plural vias.
Claims9
A semiconductor device, comprising:
- a plurality of circuits that are provided on a semiconductor substrate, and that each include a semiconductor element having a threshold voltage, the threshold voltage controlled by a substrate voltage supplied to the semiconductor substrate;
- a mesh-patterned first wiring that is formed by arranging a plurality of wirings extending in mutually different directions so as to intersect with each other, and that supplies each of the plurality of circuits with a power source voltage supplied to a plurality of locations at an outer periphery of the first wiring;
- a mesh-patterned second wiring that is formed by arranging a plurality of wirings extending in mutually different directions so as to intersect with each other, and that is provided at a wiring layer, and that receives a supply of the substrate voltage;
- and
- a mesh-patterned third wiring that is formed by arranging a plurality of wirings extending in mutually different directions so as to intersect with each other, and that is provided at a different wiring layer from the wiring layer at which the second wiring is provided, that has an outer periphery connected to an outer periphery of the second wiring, and that supplies the substrate voltage received from the second wiring to the semiconductor substrate.
Dependencies are inferred from the claim text.