Integrated Active-Matrix Capacitive Sensor Using a-IGZO TFTs for AMOLED

IEEE Journal of the Electron Devices Society

Jin Jang¹  Di Geng¹  Yuanfeng Chen¹ 

[1] Department of Information Display, Advanced Display Research Center, Kyung Hee University, Seoul, South Korea;

关键词: a-IGZO;    active matrix;    capacitive touch;    TFT;   

DOI  :  10.1109/JEDS.2018.2790954

来源: DOAJ

【 摘 要 】

We report a capacitive touch sensor using a-IGZO TFTs as active components to improve touch sensitivity and output robustness. The output potential difference between touched/untouched states is 1.7 V without readout buffer. Additionally, due to the fully compatible gate driving clocks with conventional active-matrix backplane, the integration of the capacitive touch sensor with AMOLED display without additional driver ICs can be realized. An 8 × 8 array with only one output pin using pixel-by-pixel readout has been developed, which benefits the full flexible applications with simple connection and readout method.

【 授权许可】

Unknown