Wearable electronic device including biometric sensor and wireless charging module

1 . A sensor module comprising:

a circuit board;

a biometric sensor adjacent to a first area of a first surface of the circuit board;

an antenna comprising a conductive line for wireless charging disposed in a second area of the first surface of the circuit board and wound for at least one turn to surround at least a portion of the biometric sensor when viewed from above the first surface of the circuit board;

a plurality of electrode pads disposed in a third area of a second surface of the circuit board; and

at least one electronic component comprising electronic circuitry disposed in the third area and electrically connected to at least one of the plurality of electrode pads,

wherein the first surface and the second surface of the circuit board face in opposite directions,

wherein the sensor module further includes a shield disposed in a fourth area of the second surface of the circuit board,

wherein the circuit board includes a plurality of stacked sub circuit boards, and the antenna comprising the conductive line disposed on at least one of the plurality of stacked sub circuit boards, and

wherein the conductive line is wound by at least one turn around edges at least one of the plurality of stacked sub circuit boards.

2 . The sensor module of claim 1 , wherein at least one of the plurality of stacked sub circuit boards includes a conductive plate and a conductive line of the antenna which is spaced apart from the conductive plate by a predetermined distance.

3 . The sensor module of claim 1 , wherein a first conductive line of the antenna disposed on a first sub circuit board among the plurality of stacked sub circuit boards is electrically connected to a second conductive line of the antenna disposed on a second sub circuit board stacked adjacent thereto,

an input terminal and an output terminal of the first conductive line are disposed at an inner side and an outer side of the first sub circuit board, respectively, and

an input terminal and an output terminal of the second conductive line are disposed at an inner side and an outer side of the secondsub circuit board, respectively.

4 . The sensor module of claim 1 , wherein the circuit board includes:

a first sub circuit board including a first conductive plate disposed in a first area of the first sub circuit board and a first conductive line of the antenna disposed in a second area of the first sub circuit board spaced apart from the first conductive plate by a predetermined distance; and

a second sub circuit board stacked adjacent to the first sub circuit board, the second sub circuit board including a second conductive plate disposed in a first area of the second sub circuit board and a second conductive line of the antenna disposed in a second area of the second sub circuit board spaced apart from the second conductive plate by a predetermined distance.

5 . The sensor module of claim 4 , wherein a size the first sub circuit board is substantially equal to a size of the second sub circuit board.

6 . The sensor module of claim 4 , wherein a number of wound turns of the first conductive line is substantially equal to a number of wound turns of the second conductive line.

7 . The sensor module of claim 4 , wherein, when the first sub circuit board is viewed from above, an input terminal of the first conductive line is disposed at a relatively inner side of the first sub circuit board compared to an output terminal of the first conductive line, and

when the second sub circuit board is viewed from above, an input terminal of the second conductive line is disposed at a relatively inner side of the second sub circuit board compared to an output terminal of the second conductive line.

8 . The sensor module of claim 1 , wherein the at least one electronic component includes a processor configured to process or control at least some signals among biometric information signals acquired using the biometric sensor and wireless charging signals acquired using the antenna.

9 . The sensor module of claim 1 , further comprising:

a protection member comprising a protective material disposed on at least one of the first surface or the second surface of the circuit board.

10 . The sensor module of claim 1 , wherein the biometric sensor includes:

at least one light emitter configured to emit light; and

at least one light detector spaced apart from the light emitter, the light detector configured to detect reflected light corresponding to light emitted from the light emitter and to convert the detected light into a current signal.

11 . The sensor module of claim 10 , wherein the biometric sensor further includes a wall disposed between the light emitter and the light detector.

12 . The sensor module of claim 1 , wherein the plurality of electrode pads includes:

at least one electrode pad electrically connected to the biometric sensor; and

at least one electrode pad electrically connected to the conductive line.

13 . The sensor module of claim 1 , wherein the sensor module is configured to generate a wireless charging signal using current generated in the antenna by electromagnetic induction based on an external electronic device being located adjacent to the sensor module.

14 . An electronic device comprising:

a housing including a first surface oriented in a first direction, and a second surface oriented in a second direction opposite the first direction;

a display disposed such that at least a portion thereof is viewable through the first surface;

a main circuit board disposed in a space between the first surface and the second surface;

a sensor module disposed to be exposed to at least a partial area of the second surface; and

a battery disposed in a space between the first surface and the main circuit board,

wherein the sensor module includes:

a circuit board having a first surface facing the second surface of the housing and second surface facing the first surface of the housing;

a biometric sensor disposed in a first area on the first surface of the circuit board;

an antenna for wirelessly charging the battery, the antenna comprising a conductive line disposed in a second area of the circuit board and wound for at least one turn to surround at least a portion of the biometric sensor when viewed from above the first surface of the circuit board;

a plurality of electrode pads disposed in a third area of the secondsurface of the circuit board;

an electronic component comprising electronic circuitry disposed in the third area and electrically connected to at least one of the plurality of electrode pads; and

a shield disposed in a fourth area of the second surface of the circuit board, and

wherein the circuit board includes a plurality of stacked sub circuit boards, and the antenna comprising the conductive line disposed on at least one of the plurality of stacked sub circuit boards, and

wherein the conductive line is wound by at least one turn around edges of at least one of the plurality of stacked sub circuit boards.

15 . The electronic device of claim 14 ,

wherein the shield is configured to protect the conductive line from noise from outside the sensor module.

16 . The electronic device of claim 14 , further comprising:

a connector comprising a conductive material configured to electrically connect the main circuit board and the circuit board of the sensor module.

17 . The electronic device of claim 14 ,

at least one of the plurality of stacked sub circuit boards includes a conductive plate, and a conductive line of the antenna which is spaced apart from the conductive plate by a predetermined distance.

18 . The electronic device of claim 17 , wherein a first conductive line of the antenna disposed on a first sub circuit board among the plurality of stacked sub circuit boards is electrically connected to a second conductive line of the antenna disposed on a second sub circuit board stacked adjacent thereto,

an input terminal and an output terminal of the first conductive line are disposed at an inner side and an outer side of the first sub circuit board, respectively, and

an input terminal and an output terminal of the second conductive line are disposed at an inner side and an outer side of the second sub circuit board, respectively.