Friday, May 2025

10:00 AM - 10:20 AM

Room: LL20D

Session: Optical Fingerprint Sensing OLED Displays

Amorphous Silicon Top-Gate-Gap TFTs for Front-Illuminated Optical Sensors

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  Chongqing

  Hejing Zhang , Master of Engineering

  Chongqing Advanced Photoelectric Display Technology Research Institute

Description:

The amorphous silicon top gate-gap TFTs are proposed for front-illuminated optical sensors in this work, which is identical to the process of standard VA TFT-LCD arrays. The proposed top gate-gap TFT exhibits distinct photocurrent in both the on and off regions. The length of gap has an impact on the photocurrent of top gate-gap TFTs, and the maximum dynamic range and photocurrent can achieve 128 dB and 1.86E-7A, respectively.