▎ 摘　　要

NOVELTY - The plate varactor has a dielectric substrate (202), a first electrode (206) embedded in the surface of substrate, and a capacitor dielectric layer (208) disposed over the first electrode. A single layer of graphene material (204) is disposed over the first electrode in contact with the dielectric layer to contribute a quantum capacitance component to dielectric layer. An upper electrode (210) is formed on the layer of graphene material. The capacitor dielectric includes high-K dielectric. The first electrode and upper electrode extend to cover lateral extents of layer of graphene material. USE - Plate varactor for integrated circuit used as part of electronic product. Uses include but are not limited to motherboard, toys, low-end product, advanced computer product having display, keyboard, or other input device and central processor. ADVANTAGE - Minimizes contact resistance and improves varactor's quality factor since both electrodes completely cover the graphene area. Simplifies workflow and reduces cost since dielectric is formed flat to enable application of the graphene material by dipping process or transfer process. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for fabricating a plate varactor. DESCRIPTION OF DRAWING(S) - The drawing shows a cross sectional view of the upper electrode formed on dielectric layer and over the graphene layer. Substrate (202) Graphene material (204) First electrode (206) Capacitor dielectric layer (208) Upper electrode (210)