Patent ID: 11862695
Assignee: KEY FOUNDRY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A trench metal-oxide semiconductor field-effect transistor (MOSFET) comprising:
a substrate;
a gate trench formed in the substrate;
a source electrode formed in a lower region of the gate trench; and
a plurality of gate electrodes disposed in an upper region of the gate trench;
wherein the plurality of gate electrodes comprises:
a pair of gate electrodes formed at opposite sides of the upper region of the gate trench, and
a floating gate formed between the pair of gate electrodes, and directly above the source electrode,
wherein the floating gate comprises a first region and a second region, and
wherein a width of the first region is less than a width of the second region.