31‐1: Active Stylus Application Using Self‐Capacitive Touch with OLED TDDI

Abstract

In this work, we propose active stylus application using selfcapacitive touch with OLED TDDI. Active stylus application using self‐capacitive touch sensor has several benefits in comparison to using mutual‐capacitive touch sensor, such as “Smaller RC Loading in Active Stylus Sensing”, “Uplink Signal Partially Driving”, and “Downlink Signal Through Palm Removing”. With these benefits, active stylus application can get better writing experience and accuracy using self‐capacitive on OLED On‐Cell product. Finally, we propose the word wide first OLED TDDI (Touch and Display Driver Integration) NT38770 passed Wacom LV1 certification with 6.67” OLED module.