Patent ID: 6737714
Filing Date: 2004-05-18
Classification: H01L

Abstract:
A semiconductor device comprising:a plurality of unit cells, each comprising a gate insulating film formed on a semiconductor substrate, a gate electrode the gate insulating film and in which a plurality of hexagonal rings are mutually connected so as to form a honeycomb structure, a drain diffusion layer formed in the semiconductor substrate on the inside of one hexagonal ring, and source diffusion layers formed in the semiconductor substrate on the inside of a plurality of hexagonal rings which are adjacent to the hexagonal ring having the drain diffusion layer formed therein; source contact plugs formed in the semiconductor substrate and are electrically connected to source diffusion layers; a source wiring layer formed on the semiconductor substrate and is connected to the source contact plugs; drain contact plugs formed on the semiconductor substrate and are electrically connected to drain diffusion layers; and a drain wiring layer formed on the semiconductor substrate and is electrically connected to the drain contact plugs, wherein each unit cell is arranged sharing source diffusion layers in adjacent unit cells, the hexagonal rings each have two vertexes having an inner angle 90Â°, and four vertexes having an inner angle 135Â°, the hexagonal rings each being symmetrical with respect to a segment connecting the two vertexes having an inner angle 90Â°, and the drain wiring layer being configured in which a plurality of rectangular equilateral triangle rings, where a hypotenuse is parallel to the segment, are mutually connected so as to form a honeycomb structure.