Semiconductor device having power distribution using bond wires
View Patent ↗A semiconductor device uses insulated bond wires to connect peripheral power supply and ground bond pads on the periphery of the device to array power supply and ground bond pads located on an interior region of a integrated circuit die of the device. Power supply and ground voltages are conveyed from array bond pads using vertical vias down to one or more corresponding inner power distribution layers. The bond wire connections form rows and columns of hops constituting a mesh power grid that reduces the IR drop of the semiconductor device.
1. A semiconductor device comprising:
a top surface having a periphery and an interior region located within the periphery;
peripheral power supply and ground bond pads located at the periphery;
array power supply and ground bond pads located within the interior region; and
a mesh power grid comprising:
one or more power supply rows comprising two or more bond wire hops interconnecting corresponding peripheral and array power supply bond pads;
one or more power supply columns comprising two or more bond wire hops interconnecting corresponding peripheral and array power supply bond pads;
one or more ground rows comprising two or more bond wire hops interconnecting corresponding peripheral and array ground bond pads; and
one or more ground columns comprising two or more bond wire hops interconnecting corresponding peripheral and array ground bond pads,
wherein the one or more power supply and ground rows and columns are full rows and columns, where each full row crosses all of the full columns and each full column crosses all of the full rows.
2. The semiconductor device of claim 1 , wherein each bond wire in each bond wire hop is insulated.
3. The semiconductor device of claim 1 , wherein the mesh power grid further comprises one or more partial rows or columns, wherein:
each partial row connects two different columns; and
each partial column connects two different rows.
4. The semiconductor device of claim 1 , further comprising:
one or more vias connecting corresponding array power supply bond pads to one or more inner power distribution layers to bring a power supply voltage vertically down to the one or more inner power distribution layers; and
one or more other vias connecting corresponding array ground bond pads to one or more other inner power distribution layers to bring a ground voltage vertically down to the one or more other inner power distribution layers.
5. A semiconductor device, comprising:
A semiconductor device comprising:
a top surface having a periphery and an interior region located within the periphery;
peripheral power supply and ground bond pads located at the periphery;
array power supply and ground bond pads located within the interior region; and
a mesh power grid comprising:
one or more power supply rows comprising two or more bond wire hops interconnecting corresponding peripheral and array power supply bond pads;
one or more power supply columns comprising two or more bond wire hops interconnecting corresponding peripheral and array power supply bond pads;
one or more ground rows comprising two or more bond wire hops interconnecting corresponding peripheral and array ground bond pads; and
one or more ground columns comprising two or more bond wire hops interconnecting corresponding peripheral and array ground bond pads, wherein bond wires for one voltage level are insulated and bond wires for a different voltage level are non-insulated.
6. A semiconductor device, comprising:
a top surface having a periphery and an interior region located within the periphery;
peripheral power supply and ground bond pads located at the periphery;
array power supply and ground bond pads located within the interior region; and
a mesh power grid comprising:
one or more power supply rows comprising two or more bond wire hops interconnecting corresponding peripheral and array power supply bond pads;
one or more power supply columns comprising two or more bond wire hops interconnecting corresponding peripheral and array power supply bond pads;
one or more ground rows comprising two or more bond wire hops interconnecting corresponding peripheral and array ground bond pads; and
one or more ground columns comprising two or more bond wire hops interconnecting corresponding peripheral and array ground bond pads, wherein bond wires of at least one of the rows or columns are insulated and bond wires of the other of the rows or columns are non-insulated.