Patent ID: 8686481

Claim:
A semiconductor device comprising: a semiconductor body with a semiconductor image sensor that comprises a two-dimensional matrix of picture elements arranged in a horizontal direction and a vertical direction, each of the two-dimensional matrix of picture elements comprises a radiation-sensitive element coupled to a plurality of MOS field effect transistors for reading the radiation-sensitive element to an output signal connection, wherein there is one radiation-sensitive element per the output signal connection, wherein each of the two-dimensional matrix of picture elements has same orientation in the two-dimensional matrix; a first semiconductor region that is sunken in a surface of the semiconductor body and is disposed at least partially below a trench isolation region, wherein the first semiconductor region has same conductivity type as the semiconductor body and an increased doping concentration than the semiconductor body, wherein along the vertical direction of the two dimensional matrix of picture elements, the radiation-sensitive element of a picture element borders the MOS field effect transistor of a neighboring picture element with the first semiconductor region, wherein the trench isolation region is exclusively disposed between adjacent radiation-sensitive elements of the neighboring picture elements and is surrounded by the first semiconductor region; and a second semiconductor region that is sunken in a surface of the semiconductor body and is disposed between the radiation-sensitive element of a picture element and the radiation-sensitive element of neighboring picture element along the horizontal direction of the two-dimensional matrix of picture elements, wherein the second semiconductor region has same conductivity type as the semiconductor body and an increased doping concentration than the semiconductor body.