公开(公告)号：WO2020068242A1

公开(公告)日：2020-04-02

申请号：PCT/US2019/040355

申请日：2019-07-02

Applicant: APPLE INC.

Inventor： YEKE YAZDANDOOST, Mohammad ,  GOZZINI, Giovanni ,  SETLAK, Dale

IPC: G06K9/00

Abstract: An apparatus for fingerprint sensing includes a touch-display layer covered by a transparent layer. The touch-display layer can emit light to illuminate a finger surface touching the transparent layer. The touch-display layer is transparent to reflected light from the surface to underlying layers. The underlying layers include a collimator layer and a pixelated image sensor. The collimator layer can collimate the reflected light, and the pixelated image sensor can sense the collimated reflected light. The collimator can collimate the reflected light to enable a one-to-one imaging ratio between an area of the finger surface touching the transparent layer and an area of a corresponding image formed on the pixelated image sensor.