Patent ID: 8893378

Claim:
A method for securing a carrier by gas pressurization to inhibit warpage of the carrier, the method comprising: providing a carrier having an upper surface and a lower surface, the upper surface and the lower surface being opposite to each other; providing an evacuable jig, which has an apertured surface on which a plurality of apertures are provided; placing and securing one of the upper and lower surfaces of the carrier on the apertured surface, so that the one of the upper and lower surfaces faces the apertured surface, wherein the surface of the carrier facing the apertured surface is defined as a first surface, and the other surface opposite to the first surface is defined as a second surface; and gas pressurizing a chamber and evacuating the evacuable jig positioned in the chamber, so as to form a pressure difference between the first surface and the second surface of the carrier, whereby the carrier is pressed on the jig, wherein the chamber is pressurized to a predetermined pressure greater than a standard atmospheric pressure.