Patent ID: 6237483
Filing Date: 2001-05-29
Classification: B29C,B30B,H01L

Abstract:
An apparatus for performing global planarization of a deformable surface of a wafer comprising:a chamber body having an interior surface and first and second ends;a base plate attached to and closing said first end of said chamber body, said base plate having an inner surface;a press plate attached to and closing said second end of said chamber body, said press plate having a pressing surface, said pressing surface, said inner surface and said interior surface defining a chamber;a rigid plate having a top surface and a bottom surface disposed within said chamber, said top surface being substantially parallel to said pressing surface, said rigid plate distributing an applied force to said wafer;a flexible pressing puck member having upper and lower surfaces, said lower surface of said flexible pressing puck member being seated on said top surface of said rigid plate, said upper surface of said flexible pressing puck member being directly opposite to said pressing surface, said flexible pressing puck member distributing an applied force thereto by said rigid plate to said wafer; anda drive for applying force to said bottom surface of said rigid plate to drive said rigid plate and said flexible pressing puck member toward said pressing surface.