7.4: Investigation of Moiré Interference in Pinhole Matrix Fingerprint on Display Technology

Abstract

We have investigated the Moiré interference in pinhole based fingerprint on display technology. The origin of the phenomenon is identified as the interference between discrete OLED pixels and the object outline. A countermeasure is given to overcome its impact on the identification of miniature fingerprint features.

56.1: Invited Paper: Pinhole Matrix Fingerprint on Display Technology for CFOT OLED Display

“…Pinhole-based FOD requires only a sparse array of micrometer sized pinholes, perfectly suitable for CFOT OLED. It has also been demonstrated that this method is capable of producing high resolution fingerprint images beyond the ability of traditional optical FOD [2,5]. In this work, we report the successful integration of pinhole-based FOD with CFOT OLED, achieving high performance on both FOD and display.…”

“…Fingerprint on display (FOD) has become a widely used function in today's OLED mobile phones [1][2][3][4][5]. It provides user with convenience as well as larger screen ratio.…”