Infrared-transparent window coatings for electronic device sensors

An electronic device, comprising:

• a housing;
• a display in the housing having an active area with an array of pixels and having an inactive area without pixels, wherein the display has a display cover layer and has an opaque masking layer on the display cover layer in the inactive area;
• at least one optical component;
• and
• a window in the inactive area that is aligned with the at least one optical component, wherein the window includes an opening in the opaque masking layer and a coating in the opening, wherein the coating includes a polymer that contains dye and that contains an infrared-light antireflection layer on the polymer, and wherein the coating is configured to block light at visible wavelengths while transmitting light at near-infrared wavelengths and exhibiting a haze of less than 5% at the near-infrared wavelengths.

An electronic device, comprising:

• a housing;
• a display in the housing having an active area with an array of pixels and having an inactive area without pixels, wherein the display has a display cover layer and has an opaque masking layer on the display cover layer in the inactive area;
• at least one optical component, wherein the at least one optical component comprises an optical component selected from the group consisting of:
• an array of lasers, a time-of-flight proximity sensor, and an infrared camera;
• and
• a window in the opaque masking layer in the inactive area that is aligned with the at least one optical component, wherein the window includes an opening in the opaque masking layer and a thin-film interference filter formed from a plurality of thin-film layers in the opening, wherein the thin-film interference filter is configured to block light at visible wavelengths while transmitting light at near-infrared wavelengths.