▎ 摘　　要

NOVELTY - A graphene device comprises embedded gates on a substrate (20); an upper oxide layer (28) on the embedded gates; and a graphene channel (30) and electrodes (32, 34) on the upper oxide layer. USE - A graphene device, preferably an inverter (claimed). ADVANTAGE - The graphene device may be manufactured using a relatively simple process that facilitates operation control and does not affect the properties of the graphene device. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) manufacturing the graphene device; and (2) operating the graphene device comprising providing graphene channel and electrodes on embedded gates and at least one metal pattern (24A-C)between the electrodes; and applying different voltages to at least two of the electrodes and the metal pattern, respectively. The voltage applied to one of the electrodes is a VDD voltage and the voltage applied to another of the electrodes is a ground voltage. The substrate includes a semiconductor substrate and an oxide layer which are sequentially stacked. DESCRIPTION OF DRAWING(S) - The drawing is a cross-sectional view illustrating the graphene device. Substrate (20) Metal pattern (24A-C) Upper oxide layer (28) Graphene channel (30) Electrodes (32, 34)