BOE shows their new under-display fingerprint sensor at SID Display Week 2018. It is an optical sensor with a resolution of 500 dpi placed directly under an OLED display based on TFT circuitry that has been certified to meet the TEE standard. Other companies like Synaptics have shown similar concepts before, but this is the first time the under-display fingerprint sensor is made with TFT. Dr Guillaume Chansin who is a consultant in sensor technology at Irimitech gets a hands-on demo. He says there are advantages in using TFT instead of CMOS to make a large sensor that could potentially be the same size as the display in the future. According to BOE the sensor material is not silicon so it is cheaper to manufacture. They can make the sensor on glass or on flexible plastic (for matching with flexible OLED displays).