Electronic device with NFC antenna adjacent display and related methods

1. An electronic device comprising:

a housing having a display opening therein;

processing circuitry within said housing;

wireless transceiver circuitry within said housing and coupled to said processing circuitry;

near field communications (NFC) transceiver circuitry within said housing and coupled to said processing circuitry;

a display within said housing and coupled to said processing circuitry, said display having an external surface exposed through said display opening and having an internal surface within said housing; and

an NFC antenna positioned within said housing behind, aligned with and extending across the internal surface of said display, and coupled to said NFC transceiver circuitry.

2. The electronic device of claim 1 wherein said NFC antenna comprises a substrate and electrically conductive traces thereon defining a plurality of loops.

3. The electronic device of claim 2 wherein said substrate has a rectangular shape; and wherein said plurality of loops is adjacent a periphery of said substrate.

4. The electronic device of claim 1 further comprising a flexible circuit coupling said NFC antenna to said NFC transceiver circuitry.

5. The electronic device of claim 1 wherein said substrate comprises a ferrite layer.

6. The electronic device of claim 1 further comprising a frame within said housing and behind the internal surface of said display; and wherein said NFC antenna is mounted on said frame.

7. The electronic device of claim 1 wherein said NFC antenna is mounted to the internal surface of said display.

8. The electronic device of claim 1 wherein said display comprises a touch screen display.

9. The electronic device of claim 1 wherein said wireless transceiver circuitry comprises at least one of cellular transceiver circuitry, WiMAX transceiver circuitry, and wireless local area network (WLAN) transceiver circuitry.

10. The electronic device of claim 1 wherein said processing circuitry comprises tablet computer processing circuitry.

11. A tablet computing device comprising:

a housing having a display opening therein;

tablet computing circuitry within said housing;

wireless transceiver circuitry within said housing and coupled to said tablet computing circuitry;

near field communications (NFC) transceiver circuitry within said housing and coupled to said tablet computing circuitry;

a display within said housing and coupled to said tablet computing circuitry, said display having an external surface exposed through said display opening and having an internal surface within said housing;

an NFC antenna positioned within said housing behind, aligned with and extending across the internal surface of said display, and coupled to said NFC transceiver circuitry; and

a flexible circuit coupling said NFC antenna to said NFC transceiver circuitry.

12. The tablet computing device of claim 11 wherein said NFC antenna comprises a substrate and electrically conductive traces thereon defining a plurality of loops.

13. The tablet computing device of claim 12 wherein said substrate comprises a ferrite layer.

14. The tablet computing device of claim 11 further comprising a frame within said housing and behind the internal surface of said display; and wherein said NFC antenna is mounted on said frame.

15. The tablet computing device of claim 11 wherein said NFC antenna is mounted to the internal surface of said display.

16. The tablet computing device of claim 11 wherein said display comprises a touch screen display.

17. The tablet computing device of claim 11 wherein said wireless transceiver circuitry comprises at least one of cellular transceiver circuitry, WiMAX transceiver circuitry, and wireless local area network (WLAN) transceiver circuitry.

18. A method of making an electronic device comprising:

forming a housing having a display opening therein;

coupling processing circuitry within the housing;

coupling wireless transceiver circuitry within the housing and to the processing circuitry;

coupling near field communications (NFC) transceiver circuitry within the housing and to the processing circuitry;

coupling a display within the housing and to the processing circuitry, the display having an external surface exposed through the display opening and having an internal surface within the housing;

positioning an NFC antenna within the housing behind, and aligned with and extending across the internal surface of the display; and

coupling the NFC antenna to the NFC transceiver circuitry.

19. The method of claim 18 wherein the NFC antenna comprises a substrate and electrically conductive traces thereon defining a plurality of loops.

20. The method of claim 19 wherein the substrate has a rectangular shape and wherein the plurality of loops is adjacent a periphery of the substrate.

21. The method of claim 18 further comprising coupling a flexible circuit between the NFC antenna and the NFC transceiver circuitry.

22. The method of claim 18 wherein the substrate comprises a ferrite layer.

23. The method of claim 18 further comprising coupling a frame within the housing and behind the internal surface of the display, and mounting the NFC antenna on the frame.

24. The method of claim 18 further comprising mounting the NFC antenna to the internal surface of the display.