Sony Corporation

Masaaki Isobe

Tetsuro Kumesawa

Osamu Nishima

Hiromichi Matsui

Yasuo Kanou

A CCD imager includes a large number of light receiving sections each having in turn a semiconductor surface region of a second conductivity type, a first semiconductor region of a first conductivity type, a semiconductor region of the second conductivity type and a second semiconductor region of the first conductivity type, vertically. The second semiconductor region is formed by a dual structure of the low concentration semiconductor region and the high concentration semiconductor region. The dual structure provides for shuttering at a lower voltage since the potential barrier along the depth of the light receiving section is no longer affected by the amount of the stored charges, while spreading of the depletion layer at the junction is suppressed by the high concentration semiconductor region.

Growing community of inventors

Kanagawa, Japan

Masaaki Isobe