54‐2: Diffraction Issues of Under Display IR Sensor in AMOLED Displays

This paper investigates diffraction issues in Under Display Infrared (UDIR) sensor applications for 3D facial recognition. While conventional design wisdom emphasizes infrared transmittance, this study introduces a new figure of merit, Zero‐Order Transmittance (ZOT) as a crucial parameter. Patterning the cathode significantly improves ZOT, highlighting its importance in UDIR applications. This emphasizes the need for careful consideration of pixel and aperture layout to achieve high ETZ without compromising performance such as resolution and lifetime of the display.