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ISSCC 2023Session 26 · DISPLAY AND USER INTERACTION TECHNOLOGIESMedical & Bio

A 45.8dB-SNR 120fps 100pF-Load Self-Capacitance Touch-Screen Controller with Enhanced In-Band Common Noise Immunity Using Noise Antenna Reference

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📋 论文概要

该论文提出了一种用于自电容触摸屏的控制器,能够在100pF大负载下实现45.8dB信噪比和120fps帧率,同时增强了对带内共模噪声的抑制能力,解决了柔性OLED大尺寸传感器中信号带宽受限和噪声干扰的问题。

💡 主要创新点

核心指标
45.8dB SNR, 120fps, 100pF负载
重要性
发表年份
ISSCC 2023

🏷 关键词

自电容触摸屏控制器带内共模噪声抑制柔性OLED大负载电容高帧率

📄 原文摘要

self-capacitance sensing has been mostly used for the following purposes: (1) to realize multi-touch on the matrix sensor, especially in full in-cell LCDs [1], and (2) to distinguish false touches at which water is dropped onto the touch screen. Recently, there has been an attempt to adopt 2-D self-capacitance multi-touch sensors in flexible OLEDs over 10” in size to reduce capacitive loads. Due to encapsulation of thickness less than 10µm, capacitive loads over 500pF are formed under the conventional bar-type sensor. Nevertheless, there remain problems with limited signal bandwidth, large offset charge, and severe common display noise injection due to a large capacitive load. To overcome the problems, area- and power-efficient AFEs have been

👥 作者与机构

Sanho Byun, Heejin Lee, Tae-Gyun Song, Jinchul Lee, Jongmin Baek,

Gyeongmin Ha, Seunghoon Baek, Yeongmin Kim, Wongab Jung, Hyun-Wook Lim, Siwoo Kim, Jae-Youl Lee Samsung Electronics, Hwaseong, Korea In capacitive touch systems, high SNR

分类:Medical & Bio · 年份:ISSCC 2023