Electronic device
An electronic device is provided. The electronic device comprises an NFC antenna and a metal member. The NFC antenna includes an NFC coil, and the metal member is located on the side of a plane in which the NFC coil is located. The NFC coil includes a first part and a second part that are arranged along a circumferential direction of the NFC coil, the first part is located outside an orthographic projection that is of the metal member and that is on the plane in which the NFC coil is located, and the second part passes through the orthographic projection that is of the metal member and that is on the plane in which the NFC coil is located.
1 . An electronic device, comprising:
a near field communication (NFC) antenna; and
a metal member;
wherein the NFC antenna comprises an NFC coil, the NFC coil comprises a first side, and the first side is one side of a plane in which the NFC coil is located;
wherein the metal member is located on the first side, the NFC coil comprises a first part and a second part arranged along a circumferential direction of the NFC coil;
wherein the first part is located outside a first orthographic projection, the first orthographic projection belongs to the metal member and is on the plane in which the NFC coil is located, and the first part is provided around the first orthographic projection;
wherein the second part passes through the first orthographic projection;
wherein the metal member is provided with at least one through-hole, and a periphery of the at least one through-hole is closed; and
wherein the second part overlaps a second orthographic projection, the second orthographic projection belongs to the at least one through-hole and is on the plane in which the NFC coil is located, and the second part is exposed.
2 . The electronic device according to claim 1 , wherein a sum of lengths of through-holes provided in the metal member in an extension path parallel to the second part is less than a length of the metal member in the extension path parallel to the second part.
3 . The electronic device according to claim 1 , wherein a sum of lengths of through-holes provided in the metal member in an extension path parallel to the second part is less than five-thousandths of a wavelength of the NFC antenna.
4 . The electronic device according to claim 1 , wherein the at least one through-hole is filled with an insulating material.
5 . The electronic device according to claim 1 ,
wherein the NFC coil further comprises a third part and a fourth part arranged along the circumferential direction of the NFC coil;
wherein along the circumferential direction of the NFC coil, the third part and the first part are respectively connected to two opposite ends of the second part, the third part is located outside the first orthographic projection, and the third part is provided around the first orthographic projection; and
wherein along the circumferential direction of the NFC coil, the second part and the fourth part are respectively connected to two opposite ends of the third part, and the fourth part passes through the first orthographic projection.
6 . The electronic device according to claim 1 ,
wherein the NFC coil further comprises a second side, and the first side and the second side respectively are two opposite sides of the plane in which the NFC coil is located; and
wherein the NFC antenna further comprises a magnetic shielding sheet, wherein the magnetic shielding sheet is provided on the second side of the NFC coil, the magnetic shielding sheet is stacked with the plane in which the NFC coil is located, a third orthographic projection belongs to the NFC coil and is on the magnetic shielding sheet, the third orthographic projection is located within the magnetic shielding sheet, and the magnetic shielding sheet is configured to increase magnetic field strength of the first side, so that the NFC antenna has signal transmitting/receiving directionality.
7 . The electronic device according to claim 6 , wherein the magnetic shielding sheet comprises ferrite.
8 . The electronic device according to claim 1 , wherein the electronic device further comprises a circuit board, and the NFC coil comprises a metal layer provided on the circuit board.
9 . The electronic device according to claim 1 ,
wherein the metal member is a camera decoration cover; and
wherein the electronic device further comprises a back cover, the metal member is mounted on the back cover, and the NFC coil is located on an inner side of the back cover.
10 . The electronic device according to claim 1 ,
wherein the metal member is a dial; and
wherein the electronic device further comprises a light-transmitting cover plate, the metal member and the NFC coil are located on an inner side of the light-transmitting cover plate, and the metal member is located between the NFC coil and the light-transmitting cover plate.
11 . The electronic device according to claim 1 ,
the NFC coil is a plane coil
wherein the metal member is provided with a through-slot, the second orthographic projection belongs to the through-slot and is on the plane in which the NFC coil is located, the second part is exposed, and the through-slot penetrates through an edge of the metal member along at least one end of an extension path parallel to the second part.
12 . The electronic device according to claim 11 , wherein a sum of lengths of through-slots provided in the metal member in the extension path parallel to the second part is less than a length of the metal member in the extension path parallel to the second part.
13 . The electronic device according to claim 11 , wherein the through-slot is filled with an insulating material.
14 . The electronic device according to claim 1 , wherein the first side of the NFC coil is a signal transmitting/receiving side of the NFC coil.
15 . The electronic device according to claim 1 , wherein the metal member is a sheet, a block, or a plate.
16 . The electronic device according to claim 1 , wherein the first part extends along a straight line, an arc line, or a fold line.
17 . The electronic device according to claim 1 , wherein the second part extends along a straight line, an arc line, a fold line.
18 . The electronic device according to claim 1 , wherein the first part is provided outside multiple sides of the first orthographic projection that belongs to the metal member and is on the plane in which the NFC coil is located.
19 . The electronic device according to claim 1 , wherein a distance that is between the second part and the metal member that is perpendicular to the plane in which the NFC coil is located is smaller than a distance between the first part and an edge of the metal member.
20 . The electronic device according to claim 1 , wherein the NFC coil is a plane coil.