Inverter and logic circuit comprising the same

PURPOSE: An inverter is provided to perform an existing CMOS inverter property and to simplify a manufacturing process. CONSTITUTION: An inverter includes a depletion mode load transistor(T1), an enhancement mode driving transistor(T2), and a barrier layer. The depletion mode load transistor has a first oxide layer as a channel layer. The enhancement mode driving transistor is connected to the load transistor, and has a second oxide layer as a channel layer. The barrier layer is formed between a source electrode and a drain electrode corresponding to the second oxide layer.