Stacked image sensor

摘要

A stacked image sensor includes a substrate including a first photoelectric conversion device, a second photoelectric conversion device and a first color signal storing device disposed between the first photoelectric conversion device and the second photoelectric conversion device. A second color filter and a third color filter are disposed at positions corresponding to the first photoelectric conversion device and the second photoelectric conversion device on the substrate. A conductive connecting member is disposed between the second color filter and the third color filter. A first color sensing photoelectric conversion device is disposed on the second color filter, the third color filter, and the conductive connecting member. The cross-sectional area of conductive connecting member is at least greater than the cross-sectional area of the first color signal storing device.

主权项

1. A stacked image sensor, comprising:
a substrate including a first photoelectric conversion device, a second photoelectric conversion device, and a first color signal storing device, the first color signal storing device between the first photoelectric conversion device and the second photoelectric conversion device, the first color signal storing device configured to store an electrical charge associated with a first light; a first color filter corresponding to the first photoelectric conversion device, the first color filter configured to filter incident light into a second light, and a second color filter corresponding to the second photoelectric conversion device, the second color filter configured to filter incident light into a third light; a conductive connecting member interposed between the first color filter and the second color filter, the conductive connecting member having an area at least greater than an area of the first color signal storing device, and the conductive connecting member optically opaque; a plug connecting the conductive connecting member with the first color signal storing device, the plug extending through the substrate and at least partially beyond the substrate, a portion of the plug that extends beyond the substrate being wider than a portion of the plug that extends through the substrate; and a first color sensing photoelectric conversion device on the first color filter, the second color filter, and the conductive connecting member, the first color sensing photoelectric conversion device configured to convert incident light into the first light, wherein the conductive connecting member at least partially encloses the portion of the plug that extends beyond the substrate, and the conductive connecting member is in contact with the substrate at a first end and in contact with an electrode of the first color sensing photoelectric conversion device at an opposite, second end, and wherein the first light is green light, the second light is blue light, and the third light is red light.