出版社：The Institute of Image Information and Television Engineers
摘要：The improvements in the image output characteristics of an image sensor with a function for detecting a modulated light signal is described. Three effects that degrade the characteristics were identified by examining the output characteristics in detail : “parasitic N-diff effect”, “diffusion carrier effect” and “residual charge effect”. Two kinds of improvements in modifying operation timing and employing in transverse overflow drain structure in a pixel were introduced in a new version of a CMOS image sensor based on the examination. An image sensor with 64×64 pixels based on the improvements was fabricated using 0.6μm CMOS technology. The gray scale characteristics of the sensor improved during a demonstration.
