Unit pixel of stacked image sensor and stacked image sensor including the same

摘要

A unit pixel of a stacked image sensor includes a stacked photoelectric conversion unit, a first and second signal generating units. The stacked photoelectric conversion unit includes first, second and third photoelectric conversion elements that are stacked on each other. The first, second and third photoelectric conversion elements collect first, second and third photocharges based on first, second and third components of incident light. The first signal generating unit generates a first pixel signal based on the first photocharges and a first signal node and generates a second pixel signal based on the second photocharges and the first signal node. The second signal generating unit generates a third pixel signal based on the third photocharges and a second signal node. At least a portion of the second signal generating unit is shared by the first signal generating unit.

主权项

1. A unit pixel of a stacked image sensor comprising:
a stacked photoelectric conversion unit including a first photoelectric conversion element, a second photoelectric conversion element and a third photoelectric conversion element stacked on each other, the first photoelectric conversion element collecting first photocharges based on a first component of incident light, the second photoelectric conversion element collecting second photocharges based on a second component of the incident light, the third photoelectric conversion element collecting third photocharges based on a third component of the incident light; a first signal generating unit configured to generate a first pixel signal based on the first photocharges and a first signal node, and configured to generate a second pixel signal based on the second photocharges and the first signal node; and a second signal generating unit configured to generate a third pixel signal based on the third photocharges and a second signal node, at least a portion of the second signal generating unit being shared by the first signal generating unit.