Optical imaging via imaging lens and imaging pinhole in optical sensor module under the screen for fingerprint detection on the screen in devices with organic light emitting diode (OLED) screens or other screens

摘要

An optical sensor module configured to be placed under a display panel to capture a fingerprint pattern of a finger over the display panel, characterized in that it comprises: an optical sensor array of optical detectors for converting returned light carrying fingerprint information into Detector signals representing a fingerprint pattern, wherein the returned light is generated when the finger is illuminated and transmitted through the display panel; a pinhole layer disposed over the optical sensor array, the pinhole layer being a pinhole for collecting the returned light and for Transmitting the returned light toward the optical sensor array, and a lens unit disposed between the pinhole layer and the optical sensor array, the lens unit configured to receive the returned light from the pinhole and return the to focus light onto the optical sensor array.