Patent ID: 6328802
Filing Date: 2001-12-11
Classification: C23C,G01K,H01J,H01L

Abstract:
An apparatus for determining temperature of a semiconductor wafer during wafer fabrication, said semiconductor wafer having a response circuit, comprising:a signal transceiver for (i) transmitting an interrogation signal which excites said response circuit, and (ii) receiving a response signal generated by said response circuit as a result of excitation thereof;a processing unit electrically coupled to said signal transceiver; anda memory device electrically coupled to said processing unit, wherein said memory device has stored therein a plurality of instructions which, when executed by said processing unit, causes said processing unit to:(a) operate said signal transceiver to (i) transmit said interrogation signal so as to excite said response circuit during fabrication of said semiconductor wafer, and (ii) receive said response signal generated by said response circuit, and(b) determine temperature of said semiconductor wafer based on said response signal of said response circuit.