abstract |
A thermal bonding sheet includes a layer, in which an average area of a pore portion in a cross section of the layer after being heated at a heating rate of 1.5° C./sec from 80° C. to 300° C. under pressure of 10 MPa, and then held at 300° C. for 2.5 minutes is in a range of 0.005 μm 2 to 0.5 μm 2 . |