Unit Pixels for Image Sensors and Pixel Arrays Comprising the Same

摘要

Provided are unit pixels for image sensors and pixel arrays including the same. The unit pixels include a first pixel including first and second photo diodes which are adjacent to each other, and a first deep trench isolation (DTI) fully surrounding sides of the first and second photo diodes and electrically separating the first pixel from other pixels adjacent to the first pixel. The first pixel includes a second DTI positioned between the first photo diode and the second photo diode and having one side formed to be spaced apart from the first DTI. The first pixel also includes a color filter positioned on the first and second photo diodes and fully overlapping the first and second photo diodes. The first pixel further includes a floating diffusion node electrically connected with the first and second photo diodes. The first and second photo diodes share one floating diffusion node.

主权项

1. A unit pixel comprising:
a first deep trench isolation (DTI); and a first pixel including:
a first photo diode;a second photo diode;a second DTI positioned between the first photo diode and the second photo diode, the second DTI being separated from the first DTI;a color filter positioned on the first and second photo diodes and fully overlapping the first and second photo diodes; anda floating diffusion node electrically connected with the first and second photo diodes, the first and second photo diodes sharing the floating diffusion node, wherein the unit pixel comprises a first area and a second area, the first area and the second area being defined by the second DTI, and the first photo diode is disposed in the first area and the second photo diode is disposed in the second area.