Patent ID: 8111311
Filing Date: 2012-02-07
Classification: H01L,H04N

Abstract:
1. An image sensing device comprising: a semiconductor substrate which has an image sensing region on which a pixel unit array is placed with a plurality of pixel units arranged in a horizontal direction and a vertical direction, each of the plurality of pixel units having a plurality of photoelectric conversion units including at least two photoelectric conversion units adjacent to each other in the horizontal direction and two photoelectric conversion units adjacent to each other in the vertical direction, a charge-voltage converter which converts charges into voltage, a plurality of transfer transistors which transfer charges generated in the plurality of photoelectric conversion units to the charge-voltage converter, an amplification transistor which outputs a signal corresponding to voltage of the charge-voltage converter, and a reset transistor which resets the charge-voltage converter; and a multilayer wiring structure which defines an aperture region for each of the plurality of photoelectric conversion units in each of the plurality of pixel units, wherein the multilayer wiring structure comprises a first wiring layer placed above the semiconductor substrate so as to define contour sides in a horizontal direction of the aperture region for each of the plurality of photoelectric conversion units, and a second wiring layer placed above the first wiring layer so as to define contour sides in a vertical direction of the aperture region for each of the plurality of photoelectric conversion units, the second wiring layer comprises a plurality of vertical signal lines extending in the vertical direction among the plurality of photoelectric conversion units of the pixel unit to transfer the signal output by the amplification transistor and a plurality of vertical power supply lines extending in the vertical direction between the two pixel units adjacent to each other in the horizontal direction to supply a power supply voltage to the amplification transistor or the reset transistor, and the vertical power supply lines supply the power supply voltage to the reset transistor of the adjacent pixel unit on a first side in the horizontal direction and supply the power supply voltage to the amplification transistor of the adjacent pixel unit on a second side in the horizontal direction.