A Flexible Thin-Film Pixel Array with a Chargeto-Current Gain of 59μA/pC and 0.33% Nonlinearity and a Cost Effective Readout Circuit for Large-Area X-ray Imaging

📋 论文概要

该论文提出了一种基于a-IGZO薄膜技术的柔性像素阵列，实现了电荷到电流的增益为59μA/pC和0.33%的非线性度，用于低成本、高动态范围的X射线成像背板，支持低剂量和视频速率成像。

💡 主要创新点

• 采用a-IGZO薄膜晶体管技术，实现了柔性、高分辨率的X射线成像背板。
• 提出了一种改进噪声性能的像素拓扑结构，允许使用低成本的外部读出电路。

🏷 关键词

📄 原文摘要

medical-grade, high resolution, high dynamic range X-ray backplane based on a-IGZO thin-film technology with fast readout. This enables low dose, video rate X-ray imaging. Fast X-ray imaging will find its applications not only in medical, but also in non-destructive inspection. Curved imagers will yield sharper images when illuminated from a point source. This has been achieved thanks to superior a-IGZO technology and a pixel topology that improves noise performance and allows a cost-effective external readout. Obtaining a lower X-ray dose for medical imaging has long been a research topic of interest and profound relevance. For large-area digital imaging (chest X-ray, mammography, etc.), technology has been limited to flat panel display technology

👥 作者与机构

Florian De Roose1,2, Kris Myny2, Soeren Steudel2,

Myriam Willigems2, Steve Smout2, Tim Piessens3, Jan Genoe1,2, Wim Dehaene1,2 KU Leuven, Leuven, Belgium, 2imec, Heverlee, Belgium, ICsense, Leuven, Belgium 1 3 We report an active,