US 11,852,752 B2
Cross-talk prevention structure of electronic device for measuring distance to external object
Ilyoung Kim, Suwon-si (KR); Hyunju Yang, Suwon-si (KR); and Kihuk Lee, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Mar. 30, 2020, as Appl. No. 16/834,284.
Claims priority of application No. 10-2019-0039668 (KR), filed on Apr. 4, 2019.
Prior Publication US 2020/0319306 A1, Oct. 8, 2020
Int. Cl. G01S 7/481 (2006.01); G01S 17/08 (2006.01); G01S 17/86 (2020.01); H05K 9/00 (2006.01)
CPC G01S 7/4813 (2013.01) [G01S 17/08 (2013.01); G01S 17/86 (2020.01); H05K 9/0058 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An electronic device comprising:
a cover glass;
a rear cover configured to face the cover glass;
a display disposed between the cover glass and the rear cover and having a hole formed in a specified area;
a shielding layer disposed between the display and the rear cover and having the hole formed in an area corresponding to the specified area;
a sensor module disposed in the hole to measure a distance between the electronic device and an external object;
a printed circuit board (PCB) disposed between the shielding layer and the rear cover; and
at least one processor disposed on the printed circuit board and operatively connected to the sensor module,
wherein the sensor module includes:
a light emitting part configured to emit light based on a signal received from the processor,
a receiving part to receive the emitted light after being reflected from the external object and returning back,
a substrate on which the light emitting part and the receiving part are disposed,
a cover attached on the substrate to surround the light emitting part and the receiving part, and
a diaphragm structure disposed on the cover to be positioned between the light emitting part and the receiving part, disposed directly below the cover glass, and including:
a first region to block first reflected light reflected from the shielding layer among the emitted light, and
a second region to block second reflected light reflected from the cover glass among the emitted light.