Heat transfer sheet, heat transfer structural body and manufacturing method of the heat transfer structural body

A heat transfer structural body comprising:

• a heat generating element;
• a heat dissipating element;
• and
• a heat transfer sheet provided between the heat generating element and the heat dissipating element to thereby transfer heat from the heat generating element to the heat dissipating element, wherein
• the heat transfer sheet contains a metal and a resin, and has plural regions having respective metal contents different from one another.

A method for manufacturing a heat transfer structural body comprising a heat generating element, a heat dissipating element, and a heat transfer sheet bonded between the heat generating element and the heat dissipating element to thereby transfer heat from the heat generating element to the heat dissipating element, the method comprising the steps of:

• forming patterns with an insulative resin on respective bonding surfaces of the heat generating element and the heat dissipating element;
• applying a mixed material of a metal and a resin onto the respective bonding surfaces of the heat generating element and/or the heat dissipating element on which the pattern has been formed with the insulative resin;
• and
• aligning the patterned insulative resin formed on the heat generating element with the corresponding patterned insulative resin formed on the heat dissipating element to thereby heat-bond the heat generating element, the mixed material and the heat dissipating element.