A Rolling-Shutter Distortion-Free 3D Stacked Image Sensor with -160dB Parasitic Light Sensitivity In-Pixel Storage Node

📋 论文概要

该论文提出了一种3D堆叠图像传感器，通过像素内存储节点实现全局快门功能，消除了卷帘快门导致的果冻效应失真。实现了-160dB的极低寄生光灵敏度。

💡 主要创新点

• 采用3D堆叠结构，将像素阵列与逻辑电路分开制造，提高集成度和性能。
• 在像素内集成存储节点，并实现了-160dB的寄生光灵敏度，显著降低了漏光影响。

🏷 关键词

📄 原文摘要

Mitsuhiro Tsukimura, Naohiro Takazawa, Hideki Kato, Toru Kondo, Haruhisa Saito, Yuichi Gomi, Yoshitaka Tadaki Olympus, Hachioji, Japan Conventional CMOS image sensors widely used in products currently on the market are mainly equipped with a rolling exposure function. This rolling exposure causes so-called “Jell-o effect” distortion when capturing a moving target. CMOS image sensors with a global-shutter function are one of the solutions to avoid this distortion. An in-pixel storage node is required to create a global-shutter CMOS image sensor. A floating diffusion and an additional capacitor can be used as an in-pixel storage node [1,2]. The light sensitivity of the in-pixel storage node is specified by the parasitic light sensitivity (PLS), which is the ratio of the light sensitivity of an in-pixel storage node and the light sensitivity of a photodiode. The PLS should be small enough so that the in-pixel storage is not lightsensitive. Artifacts are captured in an image from bright mo

👥 作者与机构

Jun Aoki, Yoshiaki Takemoto, Kenji Kobayashi, Naofumi Sakaguchi,