Substrate stacked image sensor having a dual detection function

摘要

The present invention relates to a substrate stacked image sensor having a dual detection function, in which when first to fourth photodiodes are formed in a first substrate, a fifth photodiode is formed in a second substrate, and the substrates are stacked and combined with each other, the first to fourth photodiodes and the fifth photodiode are combined with each other to obtain a complete photodiode as an element of one pixel, and signals individually detected in each photodiode are selectively read or added to be read according to necessity. To this end, the first to fourth photodiodes are formed in the first substrate, the fifth photodiode is formed in the second substrate, the first to fourth photodiodes and the fifth photodiode make electrical contact with each other, and pixel array sizes of the first substrate and the second substrate are allowed to be different from each other, so that sensor resolution of the first substrate and sensor resolution of the second substrate are different from each other.

主权项

1. A substrate stacked image sensor having a dual detection function, comprising:
first to fourth pixels formed in a first substrate; and a fifth pixel formed in a second substrate and having a size different from sizes of the first to fourth pixels, wherein the first to fourth pixels and the fifth pixel are electrically bonded to each other, and a sum of pitches of the first to fourth pixels is equal to a pitch of the fifth pixel so that sensor resolution of the first substrate is different from sensor resolution of the second substrate, and wherein relative distances of objects in an image are calculated through frequency component analysis for each color from RGB focus data of the second substrate and RG or RG+IR focus data of the first substrate using RGB or RGB+IR and the chromatic aberration of an external optical system, and for each color according to physical distances of upper and lower layers, to be used as basic data for restoring a three-dimensional image.