3-4-9 Project Director
Project : Development of pixel structure for implementing pixel aperture
In this project, we will develop a pixel structure which can detect depth information and reduce cross-talk of the CMOS image sensor with RGB/W pixels. - Implementation of the optical simulation. - Investigation of the vertical pixel structure. - Development of the pixel structure for Implementation of pixel aperture.
In the conventional dual aperture system, a small aperture is formed in the camera using the IR channel. We can get the focused image of the IR channel and blurred image of the RGB channel. It is possible to calculate the depth information using both images. In this research, we propose a novel pixel structure for the pixel aperture using CMOS process. The main concept is same for both case (dual aperture and pixel aperture). however, the aperture is located in a white or R/G/B pixel of CMOS image sensor. In order to fabricate feasible pixel aperture, we need to analyze the vertical structure of the 4-tr active pixel sensor and pixel characteristic using optical simulation with various aperture sizes, incidence angles and microlens.
The technology of pixel aperture in RGB/W pixels can be applied to various areas such as indoor/outdoor violence/accidents observation, black box for cars. Therefore it has competitiveness in future vision sensor market.