Semiconductor device

A semiconductor device, comprising:

• a base semiconductor layer;
• an insulation film for separating components formed on the base semiconductor layer;
• and
• a semiconductor component which is formed on the base semiconductor layer in a component forming region separated by the insulation film for separating components, the semiconductor component having a first conductive layer, said semiconductor component including:
• an interlayer insulation film placed on the insulation film for separating components and the first conductive layer;
• and
• a second conductive layer placed on the interlayer insulation film;
• wherein the first conductive layer is formed only within the component forming region;
• and
• wherein the first conductive layer and the second conductive layer are connected only within the component forming region;
• a first semiconductor region of a first conductive type;
• a second semiconductor region of a first conductive type, wherein the second semiconductor region is formed separate from the first semiconductor region by a specified distance;
• a channel forming region of a second conductive type formed between the first semiconductor region and the second semiconductor region;
• and
• a gate insulation film formed on the channel forming region;
• wherein the first conductive layer is formed on the gate insulation film, wherein the channel forming region, the gate insulation film, and the first conductive layer have a flat shape in a shape of a first ring that surrounds the first semiconductor region;
• wherein the first conductive layer and the second conductive layer are connected on the first ring shape of the first conductive layer and not extended out of the first ring shape;
• and wherein the second semiconductor region has a flat shape in a shape of a second ring that surrounds the channel forming region.