Patent ID: 7847848
Filing Date: 2010-12-07
Classification: H01L

Abstract:
1. A solid-state imaging device including an image area that is composed of a plurality of pixels arranged two-dimensionally in a direction along one main surface of a semiconductor substrate, the solid-state imaging device comprising: photodiodes each for performing a photoelectric conversion to generate a charge, each of the photodiodes being provided in a different one of the plurality of pixels; floating diffusions each for receiving the charge transferred from a corresponding one of the photodiodes, each of the floating diffusions being provided in a different one of the plurality of pixels; amplifying transistors each for amplifying the charge transferred from a corresponding one of the floating diffusions, each of the amplifying transistors being provided in a different one of the plurality of pixels; first lines each for connecting a corresponding one of the floating diffusions to a gate of a corresponding one of the amplifying transistors, each of the first lines being provided in a different one of the plurality of pixels; second lines each for supplying power, each of the second lines being connected to one of a drain and a source of a corresponding one of the amplifying transistors; and third lines each for outputting a signal amplified by the amplifying transistor, each of the third lines being connected to another one of the drain and the source of the amplifying transistor, wherein: one of the first, second, and third lines is arranged in one of a plurality of layers in a thickness direction of the semiconductor substrate on the one main surface of the semiconductor substrate, and the other lines are arranged in another layer of the plurality of layers, in each pixel surrounding a center of the image area in the direction along the one main surface of the semiconductor substrate, one line out of the first, second, and third lines provided in one of the plurality of layers farthest from the one main surface of the semiconductor substrate is in a shifted position located toward the center of the image area, in each two oppositely disposed pixels with the center of the image area sandwiched therebetween, the first line and at least one of the second and third lines are disposed symmetrically with respect to an imaginary plane extending from the center of the image area in a direction orthogonal to both of the shift direction and the direction along the one main surface of the semiconductor substrate, a light shielding pixel area is provided adjacent to the image area so as to surround the image area in the direction along the one main surface of the semiconductor substrate, the light shielding pixel area is shielded from light by a conductive layer which is provided in a layer on a same level as the layer farthest from the one main surface of the semiconductor substrate, the first and third lines are provided in a layer closer to the one main surface of the semiconductor substrate than the layer in which the conductive layer is provided, and the first and third lines are provided so as to be extended between the image area and the light shielding pixel area.