公开(公告)号：US20250068285A1

公开(公告)日：2025-02-27

申请号：US18947975

申请日：2024-11-14

Applicant: Apple Inc.

Inventor： Mohammad YEKE YAZDANDOOST ,  Jason S. GRIESBACH ,  Brian M. KING ,  Paul J. GELSINGER ,  Majid GHARGHI ,  Ileana-Georgeta RAU ,  Yang DENG

IPC: G06F3/041 ,  G06F3/042 ,  H01L25/16

Abstract: An electronic device may have a touch sensitive display with optical touch sensors that are insensitive to the presence of moisture. The optical touch sensors may include light sources and light detectors. Light illuminator and detector angular filters (e.g., masks, baffles) can be employed to limit the illumination and receive angles of emitted and detected light to minimize false object detection. In some examples, light illuminator and detector masks and baffles can be formed during the photodiode component fabrication process. Interference filters may be included over the light sources and/or the light detectors to improve discrimination between a user's finger and water, and may have a greater transmission for light at a first incident angle that is greater than the critical angle of the water/cover interface than at a second incident angle that is less than the critical angle.