Substrate for high-voltage modules
AssigneeInfineon Technologies AG
InventorGuy Lefranc
Life of this patent
Estimating the term…
Abstract
The substrate for high-voltage modules has a ceramic later with a first main side and a second main side opposite to the first main side. The ceramic layer has a first dielectric constant. A top metal layer is disposed on the first main side and a bottom metal layer is disposed on the second main side. To reduce field tips, a dielectric layer with a second dielectric constant borders the top metal layer and is disposed on the first main side of the ceramic layer. The density of the field lines on the edges of the voltage-conducting elements is thus attenuated so that the dielectric constants of the ceramic layer and the dielectric layer match each other.
Claims5
A substrate for high voltage modules, comprising:
- a ceramic layer having a first main side, a second main side opposite said first main side, and a first dielectric constant ∈1;
- an upper metal layer on said first main side and a lower metal layer on said second main side;
- a dielectric layer with a second dielectric constant ∈2 disposed on said first main side adjacent said upper metal layer on said ceramic layer;
- and
- a soft encapsulation encapsulating said ceramic layer, said upper metal layer, and said dielectric layer.
Dependencies are inferred from the claim text.