A laminate structure includes a substrate; a first layer provided on a first surface of the substrate; and a second layer provided on a second surface of the substrate. The first layer includes a first end portion and a second end portion along a width direction of the substrate, the second layer includes a third end portion and a fourth end portion along the width direction of the substrate, the first end portion is opposite to the third end portion, the second end portion is opposite to the fourth end portion. An end surface of the third end portion includes an inclined surface or a stair shape or a combined shape of the inclined surface and the stair shape.