The present application relates to the technical field of
electronic packaging, and especially relates to a power
electronic packaging module and a packaging method, wherein a pyrolyzable
polymer film is used as a temporary carrier, and a microgroove array is constructed on the surface; nano
metal solder paste is filled in the microgroove array to form a patterned
metal layer; a power
chip and a substrate are respectively arranged on two sides of the patterned
metal layer, and are attached and temporarily fixed; the whole structure after attachment is arranged in a
sintering cavity, and under the condition of 200-260 DEG C and no
external pressure, the
atmosphere composition and the temperature are controlled in stages, so that the
polymer film is pyrolyzed and removed, the nano metal
solder paste is sintered to form a metal
network structure, and metallurgical
interconnection between the power
chip surface and the substrate is completed. Compared with a traditional
interconnection scheme, the present application has design flexibility, process compatibility and long-term reliability, and provides an
interconnection solution with stable structure, controllable process and suitability for
mass production for a new generation of high-
power module packaging.