Patent ID: 8415725
Filing Date: 2013-04-09
Classification: H01L

Abstract:
1. A back-illuminated solid-state imaging device comprising: a substrate having a back substrate surface irradiated with light and a front substrate surface on which an element, including a plurality of transistors, is formed; a light-receiving part in the substrate and including a first-conductivity-type conductive layer, the light-receiving part receiving light through the back substrate surface and having a photoelectric conversion function for received light and a charge accumulation function; a second-conductivity-type isolation layer on a side of the first-conductivity-type conductive layer of the light-receiving part in a thickness direction of the substrate; a detection transistor on the front substrate surface, the detection transistor including a second-conductivity-type electrode layer formed in the first-conductivity-type conductive layer near the front substrate surface, the detection transistor detecting an accumulated charge in the light-receiving part and having a threshold modulation function; and a reset transistor on the front substrate surface, the reset transistor including (a) a first-conductivity-type electrode layer formed in the second-conductivity-type isolation layer, (b) a portion of the second-conductivity-type isolation layer between the first-conductivity-type electrode layer and the second-conductivity-type electrode layer of the detection transistor, and (c) a portion of the first-conductivity-type conductive layer of the light-receiving part,