Patent ID: 7170119
Filing Date: 2007-01-30
Classification: H01L

Abstract:
1. Semiconductor equipment having a vertical type semiconductor device, the equipment comprising: a semiconductor substrate having a first conductive type; a column region including a first semiconductor region having the first conductive type and a second semiconductor region having a second conductive type, wherein the first and the second semiconductor regions have predetermined depths in a substrate depth direction of the semiconductor substrate, respectively, wherein the second semiconductor region disposed in the first semiconductor region has a polygonal shape including a stripe shape viewing from a substrate surface side, wherein each of the first and the second semiconductor regions includes a plurality of parts separating each other by a predetermined distance, and wherein the first and the second semiconductor regions are alternately aligned on the semiconductor substrate so that a column structure is provided; a third semiconductor region disposed on the semiconductor substrate having the first conductive type and disposed outside of the column region; a fourth semiconductor region having the second conductive type, wherein the fourth semiconductor region is disposed on the third semiconductor region, and disposed on the column region or on a range from the column region to the outside of the column region; a fifth semiconductor region disposed outside of the fourth semiconductor region, and disposed on the third semiconductor region, wherein the fifth semiconductor region spreads from a surface of the device to the third semiconductor region; a body region having the second conductive type and disposed on the substrate surface side of the third semiconductor region; a source region having the first conductive type; a body contact region having the second conductive type; a trench, wherein the source region, the body contact region and the trench are disposed in the body region; a gate insulation layer disposed on a sidewall and a bottom of the trench; and a trench gate provided in such a manner that an electrode is embedded in the trench through the gate insulation layer, wherein the source region is disposed around the trench gate and disposed on a surface of the body region, the body contact region is disposed on a surface of the body region, the semiconductor substrate and the first semiconductor region are electrically connected, the column region including the source region, the body region, the body contact region and the trench gate provides an active region, the body contact region has a terminal end as a terminal end of the active region, the second semiconductor region has a terminal end on a narrow side of the second semiconductor region in the column region, a distance from the terminal end of the body contact region to the terminal end of the second semiconductor region is defined as a terminal end region length of L, the first semiconductor region has a width defined as W the terminal end region length of L, the first semiconductor region width of W