P‐130: A Full Screen Biometric Identification Approach for OLED Displays by Using Near‐Infrared OLED

Abstract

In this paper, we propose a full screen biometric identification approach for organic light emitting diode (OLED) displays using a near infra-red(NIR) OLED coupled to a large area thin film transistor (TFT) pixel sensing circuit. Preliminary estimates for photons propagating from the NIR OLED source and reflecting back to the subpixel are presented. Although the signal landing on the subpixel is small, it may be amplified by the large area active pixel sensor circuits integrated in the TFT layer. The proposed approach has the key advantage of compatibility with existing large area fabrication processes. Although there are still some open technical issues such as NIR OLED lifetime, responsivity and sensor characteristics, the proposed approach demonstrates the potential to implement a full screen biometric identification within a large area display.

Isomeric modulation of thermally activated delayed fluorescence in dibenzo[a,c]phenazine-based (deep) red emitters

“…Indeed, emission in the deep red to near-infrared (NIR) region, commonly defined as the wavelength range between 650 and 1400 nm, 4 is required to enable multiple interesting applications such as night vision, fingerprinting, security/cryptography, light-based communication, and extending further to biomedical imaging, biosensors, and optical therapies. 5–11…”

39‐2: Ultra‐Thin Integrations of Optical Array Sensors with Displays and any Transparent Surface for Fingerprint Imaging and Beyond ‐ toward a Universal Sensor for Display

“…Although capacitive fingerprint identification possesses advantages like robustness and maturity, it suffers from high cost and small detection areas [4]- [6]. Conventional optical imaging devices that use micro-lenses or collimators to collect the signals are normally thick, and hard to work in sunny outdoor environments from saturations of optical detectors [7]- [8].…”