| abstract |
One aspect of the present invention relates to an elastic resin sheet formed using a resin composition which includes a thermosetting resin and a curing agent, wherein when the maximum height of a surface roughness on a first surface of the resin sheet is Rz1 (μm), the maximum height of a surface roughness on a second surface facing the first surface is Rz2 (μm), and a thickness is t (μm), Rz1, Rz2, and thickness t (μm) satisfy the following expression (1):(Rz1+Rz2)/t≤0.5. The elastic resin sheet comprises, on at least one among the first surface and the second surface, a light-diffusing portion having an uneven shape with an arithmetic mean roughness Ra of 0.3 μm to 5.0 μm, and has an initial tensile modulus of 0.5 MPa to 500 MPa. |