Patent attributes
A fingerprint identification system, comprising panel, for placing finger; light source, disposed under panel, for generating incident light, wherein incident light is emitted to and reflected by finger to generate reflected light; processor, for performing fingerprint identification on finger according to plurality of sensing signals; and optical sensing array, disposed under panel and coupled to processor, comprising plurality of sensing units for generating plurality of sensing signals, each of sensing units comprising optical sensor, for receiving reflected light reflected by finger to generate sensing signal; focusing layer, disposed under panel, for focusing reflected light reflected by finger; blocking layer, disposed under focusing layer, for blocking part of reflected light to reduce diffraction phenomenon of reflected light; shading layer, disposed under blocking layer, for blocking part of reflected light to limit incident angle of reflected light; and aperture layer, disposed under shading layer and on optical sensor, for blocking stray light.
