A sintered material excellent in thermal stress and bonding strength; a connection structure containing the sintered material; a composition for bonding with which the sintered material can be produced; and a method for producing the sintered material. The sintered material has a base portion, buffer portions, and filling portions. The buffer portions and filling portions are dispersed in the base portion. The base portion is a metal sintered body, each buffer portion is formed from a pore and/or material that is not the same as the sintered body, and each filling portion is formed from particles and/or fibers. The sintered material satisfies A>B. A is the kurtosis of volume distribution of the base portions in a three-dimensional image of the sintered material. B is the kurtosis of volume distribution of the base portions in a three-dimensional image of the sintered material from which the filling portions are removed.

The inventive concept relates to a filling composition for a semiconductor package. The filling composition for a semiconductor package may include a resin, a curing agent, and an insulating filler. The insulating filler may include a first filler body part, a second filler body part, a polymer chain coupled to the first filler body part and the second filler body part, and supramolecules coupled to the polymer chain.

The inventive concept relates to a filling composition for a semiconductor package. The filling composition for a semiconductor package may include a resin, a curing agent, and an insulating filler. The insulating filler may include a first filler body part, a second filler body part, a polymer chain coupled to the first filler body part and the second filler body part, and supramolecules coupled to the polymer chain.

The present invention provides a conductive material in which, even when the conductive material is left for a certain period of time, solder of conductive particles can be efficiently placed on an electrode, and, in addition, yellowing of the conductive material can be sufficiently suppressed during heating. The conductive material according to the present invention contains a plurality of conductive particles having solder at an outer surface portion of a conductive portion, a curable compound, and a boron trifluoride complex.

The present invention provides a conductive material in which, even when the conductive material is left for a certain period of time, solder of conductive particles can be efficiently placed on an electrode, and, in addition, yellowing of the conductive material can be sufficiently suppressed during heating. The conductive material according to the present invention contains a plurality of conductive particles having solder at an outer surface portion of a conductive portion, a curable compound, and a boron trifluoride complex.

A method of manufacturing a semiconductor power package includes: embedding a power semiconductor chip in an encapsulation, the encapsulation forming a housing of the semiconductor power package; and extending a layer of a covering material over at least a part of an outer main surface of the encapsulation. The covering material has a thermal conductivity greater than a thermal conductivity of the material of the encapsulation and/or a temperature stability greater than a temperature stability of the pre-molded chip housing.

A method of manufacturing a semiconductor power package includes: embedding a power semiconductor chip in an encapsulation, the encapsulation forming a housing of the semiconductor power package; and extending a layer of a covering material over at least a part of an outer main surface of the encapsulation. The covering material has a thermal conductivity greater than a thermal conductivity of the material of the encapsulation and/or a temperature stability greater than a temperature stability of the pre-molded chip housing.

A method of manufacturing a semiconductor power package includes: providing a pre-molded chip housing and an electrically conducting chip carrier cast-in-place in the pre-molded chip housing; bonding a power semiconductor chip on the electrically conducting chip carrier; and applying a covering material so as to embed the power semiconductor chip. The covering material has an elastic modulus less than an elastic modulus of a material of the pre-molded chip housing and/or a thermal conductivity greater than a thermal conductivity of the material of the pre-molded chip housing and/or a temperature stability greater than a temperature stability of the pre-molded chip housing.

A method of manufacturing a semiconductor power package includes: providing a pre-molded chip housing and an electrically conducting chip carrier cast-in-place in the pre-molded chip housing; bonding a power semiconductor chip on the electrically conducting chip carrier; and applying a covering material so as to embed the power semiconductor chip. The covering material has an elastic modulus less than an elastic modulus of a material of the pre-molded chip housing and/or a thermal conductivity greater than a thermal conductivity of the material of the pre-molded chip housing and/or a temperature stability greater than a temperature stability of the pre-molded chip housing.

A conductive connecting member formed on a bonded face of an electrode terminal of a semiconductor or an electrode terminal of a circuit board, the conductive connecting member comprising a porous body formed in such manner that a conductive paste containing metal fine particles (P) having mean primary particle diameter from 10 to 500 nm and an organic solvent (S), or a conductive paste containing the metal fine particles (P) and an organic dispersion medium (D) comprising the organic solvent (S) and an organic binder (R) is heating-treated so as for the metal fine particles (P) to be bonded, the porous body being formed by bonded metal fine particles (P) having mean primary particle diameter from 10 to 500 nm, a porosity thereof being from 5 to 35 volume %, and mean pore diameter being from 1 to 200 nm.