Photoelectric conversion device
AssigneeCanon Kabushiki Kaisha
InventorsMasaaki Iwane, Mahito Shinohara
Life of this patent
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Abstract
In a photoelectric conversion device, a first metal wiring layer and a second metal wiring layer are arranged on a semiconductor substrate that includes a pixel region where a plurality of pixels are arrayed in a matrix, each pixel including at least a photoelectric conversion portion and an amplification transistor. The second metal wiring layer includes power supply lines each configured to supply a power supply voltage to the amplification transistors of at least two pixel columns, and the amplification transistor of a pixel column having no power supply line receives the power supply voltage from the power supply line via the first metal wiring layer.
Claims6
A photoelectric conversion device in which at least a first metal wiring layer and a second metal wiring layer are arranged on a semiconductor substrate, the first metal wiring layer being arranged between the semiconductor substrate and a plane in which the second metal wiring layer is arranged, the semiconductor substrate comprising a pixel region where a plurality of pixels are arrayed to form rows and columns, each pixel including at least a photoelectric conversion portion, amplification transistors being provided for all of the columns so as to output signals of the pixels, the photoelectric conversion device being configured such that light is incident on the photoelectric conversion portions from an upper side of the second metal wiring layer,
- wherein the second metal wiring layer includes power supply lines extending along the columns, each of the power supply lines being configured to supply a power supply voltage to the amplification transistors of pixels in each of at least two columns, and
- wherein the amplification transistors of pixels in at least one of the at least two columns receive the power supply voltage, via a line included in the first metal wiring layer, from the power supply line that is provided for the at least two columns.
Dependencies are inferred from the claim text.