LAMINATE AND POLYMER FILM

Provided are: a laminate having a polymer film in which the linear expansion coefficient of at least one surface (X) is smaller than the internal linear expansion coefficient; and a metal layer or metal wiring on the surface (Y) side of the polymer film on the opposite side from the surface (X), the linear expansion coefficient of at least one surface X of the polymer film is smaller than the internal linear expansion coefficient. 本发明提供一种层叠体及聚合物膜，所述层叠体具有至少一个表面X的线性膨胀系数小于内部线性膨胀系数的聚合物膜及在上述聚合物膜的与上述表面X相反的一侧的表面Y侧的金属层或金属配线，所述聚合物膜的至少一个表面X的线膨胀系数小于内部线膨胀系数。