A 1.1μm-Pitch 13.5Mpixel 3D-Stacked CMOS Image Sensor Featuring 230fps Full-High-Definition and 514fps High-Definition Videos by Reading 2 or 3 Rows Simultaneously Using a Column-Switching Matrix

📋 论文概要

论文提出了一款1.1μm像素间距的13.5M像素3D堆叠CMOS图像传感器，通过3D堆叠和高速列并行读出架构，实现了230fps全高清和514fps高清视频拍摄，满足了智能手机对慢动作视频的高帧率需求。

💡 主要创新点

• 采用3D堆叠架构将像素阵列与逻辑电路分离，实现了1.1μm小像素间距与高性能信号处理。
• 设计高速列并行读出电路，支持全高清230fps和高清514fps的高帧率视频输出。
• 在13.5M像素高分辨率下兼顾高帧率，解决了高速成像与像素尺寸之间的权衡问题。

🏷 关键词

📄 原文摘要

Charles Chih-Min Liu, Calvin Yi-Ping Chao, Chiao-Yi Huang, Honyih Tu, Thomas Wu, Shang-Fu Yeh, Seiji Takahashi, Yimin Huang TSMC, Hsinchu, Taiwan Slow-motion video is a desirable feature for state-of-art smartphones. The effect is achieved by capturing a video at a higher frame rate and playing it back at a lower frame rate. While the still-image resolution of smartphone cameras ranges from 8MP to 25MP, standard videos are limited to 3 formats: 3840×2160 (4K2K, 2160p), 1920×1080 (Full High Definition, FHD, 1080p), and 1280×720 (High Definition, HD, 720p). CMOS image sensors using various column-parallel ADC architectures have been reported to reach high frame rates [1-5]. The single-slope (SS) ADC is an attractive choice for a balanced performance among high speed, low noise, small area, and low power consumption. However, in conventional SS ADC design, each ADC is hardwired to a column signal line. ADCs for skipped

👥 作者与机构

Po-Sheng Chou, Chin-Hao Chang, Manoj M. Mhala,