International Display Workshops General Incorporated Association

Proceedings of the International Display Workshops Volume 29 (IDW '22)

Proceedings of the International Display Workshops Volume 29 (IDW '22)

Dec 14, 2022 - Dec 16, 2022
Fukuoka International Congress Center

4:40 PM - 5:00 PM

[INP5-1 (Invited)] Integrated Self-Capacitance On-cell Touch Panel in Flexible OLED Display

*Feng Lu1, Zhe Li1, Zihan Zhou1, Jing Zhang1, Qijun Yao1, Yuan Ding1, Yung-Sheng Lu2, Jui-Chuan Chuang2, Chien-Chuan Chen2 (1.Shanghai Tianma Microelectronics Co., Ltd. (China), 2.Ilitek Technology Corp. (Taiwan))

Touch Panel, Self-Capacitance, Flexible OLED Display

https://doi.org/10.36463/idw.2022.1132

Designs of self-capacitance “on-cell” touch panel were implemented in a 6.2inch foldable OLED panel with single-layered sensor pattern. The test results showed that the self-capacitance “on-cell” touch panel has high sensitivity even with TFTs connected in serial of the sensor channels. Signal degradation and retransmission effect in thinner stack-ups were also studied and compared with its mutual-capacitance counterpart. The self-capacitance touch panel has shown great potential...