Patent ID: 7462029

Claim:
A uniform pressing apparatus adapted to perform a nanoimprint operation on a substrate, the substrate having opposite top and bottom surfaces, said uniform pressing apparatus comprising: a lower pressing unit including a supporting container having an upwardly opening accommodating space, and an annular top surface defining a top end of said accommodating space and adapted to abut against the bottom surface of the substrate such that a top end of said accommodating space is sealed by the substrate, a pressure equalizing liquid received within said accommodating space in said supporting container, and pressurizing equipment including a piston member extending into said accommodating space in said supporting container and operable to push said pressure equalizing liquid upwardly in an axial direction; an upper pressing unit disposed directly above said lower pressing unit and movable relative to said supporting container of said lower pressing unit; and a mold adapted to be disposed on the top surface of the substrate and having a forming surface adapted to allow the top surface of the substrate to be pressed thereagainst by said lower pressing unit.