Novel Active-Matrix Micro-LED Display With External Compensation Featuring Fingerprint Recognition
نویسندگان
چکیده
This letter proposes a novel active-matrix (AM) micro light-emitting diode (micro-LED) display architecture featuring fingerprint detection. A new pixel circuit comprising four transistors and one capacitor (4T1C) is proposed to compensate for threshold voltages externally. The AM micro-LED does not need any additional light sources sensors because an LED itself can be used photosensors. 4T1C isolate the effects of photocurrents caused by ambient lights large capacitance from detecting voltage via external circuits. with oxide thin film was fabricated using transistor process. charges were accumulated 16.7 ms. final measured after ms −5.02 V −1.53 under irradiance 0.05 W/m 2 1.54 , respectively. It verified that could distinguish incident reflected ridges valleys fingerprint.
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ژورنال
عنوان ژورنال: IEEE Electron Device Letters
سال: 2022
ISSN: ['1558-0563', '0741-3106']
DOI: https://doi.org/10.1109/led.2022.3189211