Patent ID: 7132632

Claim:
A high frequency induction heater built in an injection mold comprising: at least a stamper, fabricated by micro electromechanical system (MEMS)technologies, having a micro pattern of a micro system; at least a high frequency induction heating module, fabricated by MEMS technologies, positioned on a side of the stamper, the high frequency induction heating module comprising at least a set of high frequency induction heating coils, the high frequency induction heating module being controlled by a driver positioned outside the injection mold; and at least a set of thermometer detectors, fabricated by MEMS technologies, positioned between the set of high frequency induction heating coils, the set of thermometer detectors being controlled by a temperature controller positioned outside the injection mold; wherein the high frequency induction heating module emits electromagnetic waves which penetrate the stamper and applies a local heat to a plastic such that sections of the plastic having a thin thickness or sections having a large difference of cross sectional areas remains fluid, in such case the micro pattern of the micro system is accurately transferred to the plastic by injection compression molding technologies.