According to one aspect of the invention, a flexible pad for a display device lamination process includes: a generally straight area having an upper surface defining substantially the same height along a first direction and a generally convex shape along a second direction generally perpendicular to the first direction; a first inclined area having a first upper surface inclined along the first direction at a first inclination angle and being generally flat along the second direction; and a second inclined area disposed between the first inclined area and the generally straight area, wherein the second inclined area has a second upper surface inclined along the first direction at a second inclination angle smaller than the first inclination angle.