Ambient light sensor window coatings for electronic devices
First Claim
1. An electronic device, comprising:
- an ambient light sensor;
a transparent structure having a portion forming a window that is aligned with the ambient light sensor; and
a coating on the transparent structure that is interposed between the ambient light sensor and the transparent structure and that overlaps the window, wherein the coating has a physical vapor deposition thin-film coating and a stack of dielectric layers interposed between the physical vapor deposition thin-film coating and the transparent structure.
1 Assignment
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Accused Products
Abstract
An electronic device may have a display with a cover layer. An ambient light sensor may be aligned with an ambient light sensor window formed from an opening in a masking layer on the cover layer in an inactive portion of the display. To help mask the ambient light sensor window from view, the ambient light sensor window may be provided with a black coating that matches the appearance of surrounding masking layer material while allowing light to reach the ambient light sensor. The black coating may be formed from a black physical vapor deposition thin-film inorganic layer with a high index of refraction. An antireflection layer formed from a stack of dielectric layers may be interposed between the black thin-film inorganic layer and the display cover layer.
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Citations
22 Claims
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1. An electronic device, comprising:
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an ambient light sensor; a transparent structure having a portion forming a window that is aligned with the ambient light sensor; and a coating on the transparent structure that is interposed between the ambient light sensor and the transparent structure and that overlaps the window, wherein the coating has a physical vapor deposition thin-film coating and a stack of dielectric layers interposed between the physical vapor deposition thin-film coating and the transparent structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electronic device, comprising:
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a display having a display cover layer that overlaps an active area with pixels that display images and an inactive area without pixels; an ambient light sensor that receives light through a portion of the display cover layer that overlaps the inactive area; and a coating on the portion of the display cover layer, wherein the coating includes a black inorganic layer and a stack of dielectric layers. - View Dependent Claims (12, 13, 14, 15, 16, 17, 22)
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18. An electronic device, comprising:
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a housing; a display in the housing that has a display cover layer; a black opaque masking layer on the display cover layer that has an opening that forms an ambient light sensor window; an ambient light sensor in the housing that receives ambient light through the ambient light sensor window; and a coating on the display cover layer in the opening, wherein the coating includes a black thin-film inorganic layer and an antireflection layer, wherein the antireflection layer is configured to reduce reflections of visible light from the ambient light sensor window. - View Dependent Claims (19, 20, 21)
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Specification