Patent ID: 7948545

Claim:
A solid-state imaging device comprising a semiconductor substrate and plural unit pixels arranged like a two-dimensional array, in which each of the unit pixels consists of a first-color pixel, a second-color pixel, and a third-color pixel for detecting incident light quantities of a first color, a second color, and a third color of three primary colors, respectively, the first-color pixels are provided in a photoelectric conversion layer which is provided above the semiconductor substrate, the second-color pixels and the third-color pixels are formed by respective photodiodes which are provided under the first-color pixel in the semiconductor substrate, and detection signals of the first-color pixels, the second-color pixels, and the third-color pixels are read-out by sets of signal reading circuits which are provided in the semiconductor substrate for the respective unit pixels, wherein: transistors included in each of the signal reading circuits for reading the detection signals of the first-color pixels are only three transistors which are a reset transistor, a row selection transistor, and an output transistor; and each of the signal reading circuits for reading the detection signals of the second-color pixels and the third-color pixels comprise four transistors which are a read transistor, a shared reset transistor, a shared row selection transistor, and a shared output transistor.