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TFT Fingerprint Sensor
- The ultra-high pixel density optical sensing technology can accurately detect weak light signals reflected by the finger. Fine fingerprints are detectable, as well as the heartbeat through the subtle gray-scale changes caused by the finger pulse, making identity verification more accurate.
- TFT structure optimization can reduce signal transmission interference and achieve the best signal-to-noise ratio of the optical sensor.
- The sensor’s sensitivity is improved by enhancing the intensity of optical signal reception, optimizing the sensor circuit, and using special optical film materials. As a result, integrated fingerprint scanners can meet the highest requirement standards of the FBI’s international safety standard certification.
Precision Recognition, Large Display Sensor
TFT fingerprint scanning technology uses thin-film transistors (TFT) as the light-sensing element. The photoelectric conversion characteristics of amorphous silicon (a-Si) and low-temperature polycrystalline silicon (LTPS) absorb light sources of different wavelengths. The sensor IC reads the photo leakage current difference of the array sensing components and converts them into digital grayscale images. AUO Display Plus (ADP) provides fingerprint scanning panels of different sizes and high resolutions (500 to 1000 pixels per inch (PPI)), which have thinness and large sensing area advantages, and can still provide clear images outdoors under bright light. It also supports multi-finger image capture to improve recognition accuracy and safety.