Electronic device including scattering member and light receiving element obtaining light scattered by scattering member and method of controlling same
Various embodiments of the disclosure relate to a proximity-illuminance sensor and an electronic device including the same to increase the accuracy of the illuminance sensor and addressing crosstalk issues. According to an embodiment, an electronic device comprises a transparent member, a scattering member disposed under a portion of the transparent member to scatter light incident at a designated angle from an outside of the electronic device through the transparent member, a light receiving element disposed under the portion and configured to obtain scattered light which is scattered by the scattering member from at least a part of incident light, and a control circuit configured to determine a brightness of the incident light based on, at least, the scattered light obtained through the light receiving element. The electronic device may be implemented in various manners according to embodiments of the disclosure.
1. An electronic device, comprising:
a transparent member;
a scattering member disposed under a portion of the transparent member to scatter light incident at a designated angle from an outside of the electronic device through the transparent member;
a light receiving element disposed under the portion and configured to obtain scattered light that is scattered by the scattering member from at least a part of incident light;
a control circuit configured to determine a brightness of the incident light based on, at least, the scattered light obtained through the light receiving element;
a connecting member disposed under the light receiving element and configured to maintain a predetermined distance between the light receiving element and the transparent member;
a first circuit board; and
a second circuit board,
wherein the light receiving element is mounted on the second circuit board,
wherein the connecting member electrically connects the first circuit board with the second circuit board, and
wherein the connecting member is a C-clip comprising a first side contacting the first circuit board and a second side contacting the second circuit board.
2. The electronic device of claim 1 , further comprising a light emitting element to emit a designated wavelength of light,
wherein the incident light includes the designated wavelength of light emitted from the light emitting element and reflected by an external object.
3. The electronic device of claim 2 , wherein the control circuit is configured to determine a degree of approach of the external object based on the brightness of the incident light.
4. The electronic device of claim 2 , wherein the control circuit is configured to generate biometric information corresponding to the external object based on the brightness of the incident light.
5. The electronic device of claim 1 , wherein the scattering member is disposed adjacent to the transparent member.
6. The electronic device of claim 1 , wherein:
the scattering member includes a white pigment to scatter light; and
the portion is coated with the white pigment.
7. The electronic device of claim 1 , wherein the scattering member includes a light transmittance not less than 1% and not more than 10% for a 550 nm band of light.
8. The electronic device of claim 1 , further comprising a light absorbing member disposed between the portion of the transparent member and the scattering member to absorb at least part of light reflected by the scattering member.
9. The electronic device of claim 8 , wherein the light absorbing member comprises a material to block visible light to reduce visibility of an inside of the transparent member while transmitting infrared (IR) light.
10. The electronic device of claim 8 , wherein the light absorbing member includes a light transmittance more than 0% and not more than 7% for a 550 nm band of light.
11. The electronic device of claim 1 , wherein the connecting member includes a plurality of C-clips.
12. The electronic device of claim 11 , further comprising a bracket that is at least partly disposed between the transparent member and the second circuit board.
13. An electronic device, comprising:
a display;
a bezel formed to surround at least a portion of the display;
a sensor module disposed in the bezel, the sensor module including a transparent member formed on an upper surface of the bezel and at least one light receiving element disposed under the transparent member;
a scattering member disposed between the transparent member and the light receiving element to scatter light coming from the outside of the electronic device to the light receiving element;
a light absorbing member to absorb the light reaching the light receiving element, wherein the light absorbing member is formed between the transparent member and the scattering member;
a connecting member disposed under the light receiving element and configured to maintain a predetermined distance between the light receiving element and the transparent member;
a first circuit board; and
a second circuit board,
wherein the light receiving element is mounted on the second circuit board,
wherein the connecting member electrically connects the first circuit board with the second circuit board, and
wherein the connecting member is a C-clip comprising a first side contacting the first circuit board and a second side contacting the second circuit board.
14. The electronic device of claim 13 , wherein:
the scattering member is formed under a portion of the transparent member; and
the scattering member includes a light transmittance not less than 1% and not more than 10% for a 550 nm band of light.
15. The electronic device of claim 13 , wherein:
the light absorbing member is formed corresponding to where the scattering member is formed; and
the light absorbing member includes a light transmittance more than 0% and not more than 7% for a 550 nm band of light.
16. A sensor module, comprising:
a housing including a front surface that comprises at least one opening, a rear surface, and a side surface surrounding the front surface and the rear surface;
a transparent member disposed inside the housing to abut the front surface;
a scattering member disposed under a portion of the transparent member corresponding to the at least one opening to scatter light incident at a designated angle from an outside of the sensor module through the opening;
a light receiving element disposed under the at least one opening and configured to obtain light at least partially scattered by the scattering member;
a connecting member disposed under the light receiving element and configured to maintain a predetermined distance between the light receiving element and the transparent member;
a first circuit board; and
a second circuit board,
wherein the light receiving element is mounted on the second circuit board,
wherein the connecting member electrically connects the first circuit board with the second circuit board, and
wherein the connecting member is a C-clip comprising a first side contacting the first circuit board and a second side contacting the second circuit board.
17. The sensor module of claim 16 , further comprising a light absorbing member disposed between the portion of the transparent member and the scattering member to absorb at least part of light reflected by the scattering member.