Technical Necessity
High-performance ceramic substrate
for heat dissipation suitable for electric vehicles
With the increasing demand and performance improvement of electric vehicles, there is a growing need for high-performance ceramic substrate
for heat dissipation suitable for electric vehicles. Ceramic substrate for heat dissipation for electric vehicles requires high heat
dissipation performance, high bending strength performance, and careful thickness management during module assembly.
LX Semicon’s ceramic substrate for heat dissipation with SMB technology provides high thermal and
mechanical reliability, securing the excellent characteristics of substrates for heat dissipation.
SMB
Coating the surface of the ceramic substrate with a metal layer,
followed by joining to a copper substrate using a hot press process.
-
Sputtering Metal Layer is formed on the ceramic surface
by the sputtering process.
- Forming metal Layer within 1 micrometer level.
-
Hot Press Joining the deposited ceramic substrate and
copper substrate in a high vacuum chamber under
high temperature and high pressure conditions.
Conventional Technology
Joining of copper substrate to ceramic substrate surface by screen-
printed paste and heat treatment.
-
Screen Printing Metal paste (Ti, Cu, Ag) is screen printed onto
the ceramic surface.
- Forming a paste thickness of several micrometers
-
Heat Treatment Joining by heat treatment in a vacuum 
Solution Pros
High thermal and mechanical reliability
LX Semicon’s ceramic substrate for heat dissipation, which incorporates SMB technology,
allows for void-free joining of the thin and uniform joining surfaces of ceramic and copper substrates.
This provides high bending strength and dimensional accuracy, resulting in high thermal and mechanical reliability.
In addition, it enables the combination of various thicknesses of copper in an asymmetric manner.
with SMB technology
SMB Applicable Fields
-
Electric Vehicle
-
EV Charger
-
Rail
-
Renewable
Energy System -
Power Supply Unit
-
Energy Storage
System