Electronic device with near-field antenna operating through display
An electronic device may have a display. A display cover layer and a transparent inner display member may overlap a display pixel layer. The display pixel layer may have an array of display pixels for displaying images for a user. A touch sensor layer may be interposed between the display pixel layer and the transparent display member. A ferromagnetic shielding layer may be mounted below the display pixel layer. A flexible printed circuit containing coils of metal signal lines that form a near-field communications loop antenna may be interposed between the ferromagnetic shielding layer and the display pixel layer. A non-near-field antenna such as an inverted-F antenna may have a resonating element mounted on an inner surface of the display cover layer. The resonating element may be interposed between the transparent display member and the display cover layer.
1. An electronic device, comprising:
a housing;
a curved cover layer for a display coupled to the housing;
a display pixel layer for the display that overlaps the curved cover layer at an active area of the display;
an antenna resonating element for an antenna that overlaps the curved cover layer at an inactive area of the display;
a conductive coil in the housing that runs along a periphery of the display; and
a biasing structure configured to press the antenna resonating element against the curved cover layer at the inactive area of the display.
2. The electronic device defined in claim 1 , wherein the biasing structure comprises compressible material.
3. The electronic device defined in claim 1 , wherein the curved cover layer at the inactive area of the display has a curved outer surface and a curved inner surface, and the antenna resonating element is mounted on the curved inner surface.
4. The electronic device defined in claim 3 , wherein the antenna resonating element comprises an inverted-F antenna resonating element.
5. The electronic device defined in claim 1 , wherein the conductive coil overlaps the inactive area of the display.
6. The electronic device defined in claim 1 , further comprising:
a strap attached to the housing.
7. The electronic device defined in claim 1 , wherein the conductive coil is configured to operate through the display.
8. The electronic device defined in claim 1 , wherein the curved cover layer is curved at the inactive area of the display.
9. The electronic device defined in claim 8 , wherein the curved cover layer is curved at the active area of the display.
10. The electronic device defined in claim 1 , wherein the antenna resonating element is mounted to the curved cover layer through an intervening structure.
11. The electronic device defined in claim 10 , wherein the intervening structure comprises masking material.
12. The electronic device defined in claim 1 , wherein the conductive coil is configured to convey a magnetic field through the curved cover layer.
13. An electronic device, comprising:
a housing;
a curved cover layer for a display coupled to the housing;
a display pixel layer for the display that overlaps the curved cover layer at an active area of the display;
an antenna resonating element for an antenna that overlaps the curved cover layer at an inactive area of the display;
a conductive coil in the housing that runs along a periphery of the display; and
opaque masking material that overlaps the curved cover layer at the inactive area of the display, wherein the antenna resonating element is mounted against the opaque masking material.
14. The electronic device defined in claim 13 , wherein the curved cover layer at the inactive area of the display has a curved outer surface and a curved inner surface, and the opaque masking material is disposed on the curved inner surface.
15. An electronic device, comprising:
a housing;
a curved cover layer for a display coupled to the housing;
a display pixel layer for the display that overlaps the curved cover layer at an active area of the display;
an antenna resonating element for an antenna that overlaps the curved cover layer at an inactive area of the display; and
a conductive coil in the housing that runs along a periphery of the display, wherein the curved cover layer has a curved exterior surface at the inactive area of the display and an opposing interior surface at the inactive area of the display, and the antenna resonating element is mounted on the interior surface of the curved cover layer and overlaps the curved exterior surface of the curved cover layer.
16. The electronic device defined in claim 15 , wherein the interior surface of the curved cover layer is curved and the antenna resonating element is mounted to the curved interior surface of the curved cover layer.