Transparent Capacitive-Type Fingerprint Sensing Based on Zinc Oxide Thin-Film Transistors

被引：19

作者：

Jiang, Aike ^{[1
]}

Yuan, Yonggang ^{[2
]}

Liu, Ni ^{[1
]}

Han, Leixiao ^{[2
]}

Xiong, Mian ^{[2
]}

Sheng, Yewei ^{[2
]}

Ye, Zhi ^{[1
]}

Liu, Yang ^{[1
]}

机构：

[1] Zhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou 310027, Zhejiang, Peoples R China

[2] Lakeside Micro Technol, Hangzhou 310007, Zhejiang, Peoples R China

来源：

IEEE ELECTRON DEVICE LETTERS | 2019年 / 40卷 / 03期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

Zinc oxide thin-film-transistor; fingerprint sensor; active matrix; transparent electronics; IGZO TFTS; SENSOR; CHIP;

D O I：

10.1109/LED.2019.2895830

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A highly transparent, capacitive-type fingerprint-sensing panel is demonstrated using an active sensor matrix based on zinc oxide (ZnO) thin-film transistors (TFTs). In particular, the ZnO TFTs are used in each pixel not only as select switches but also for pre-amplification of signals. Compared to the select switch scheme, the pre-amplifier scheme shows significantly enhanced signals. It produces clear 50x50 size and 254 dpi fingerprint images, from which the minutia features are extracted. Furthermore, the sensor panel exhibits stable operations under the illumination of white light. This letter may open up potential applications of on-display transparent electronics that involve active circuits.

引用

页码：403 / 406

页数：4

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