US 12,126,337 B2
Optical proximity sensor system
Jian Liu, Eindhoven (NL); Klaus Schmidegg, Eindhoven (NL); Whitney Hernandez, Eindhoven (NL); Helmut Theiler, Eindhoven (NL); Josef Kriebernegg, Eindhoven (NL); George Richard Kelly, Eindhoven (NL); and Matt Kroese, Eindhoven (NL)
Assigned to AMS INTERNATIONAL AG, Rapperswil (CH)
Appl. No. 17/427,579
Filed by ams International AG, Jona (CH)
PCT Filed Jan. 30, 2020, PCT No. PCT/EP2020/052345
§ 371(c)(1), (2) Date Jul. 30, 2021,
PCT Pub. No. WO2020/157230, PCT Pub. Date Aug. 6, 2020.
Claims priority of provisional application 62/829,120, filed on Apr. 4, 2019.
Claims priority of provisional application 62/799,107, filed on Jan. 31, 2019.
Prior Publication US 2022/0109442 A1, Apr. 7, 2022
Int. Cl. G09G 5/10 (2006.01); H03K 17/94 (2006.01); H03K 17/945 (2006.01)
CPC H03K 17/945 (2013.01) [G09G 5/10 (2013.01); H03K 17/943 (2013.01); H03K 2017/9455 (2013.01); H03K 2217/94108 (2013.01); H03K 2217/96031 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a display screen; and
an optical proximity sensor module disposed behind the display screen, the optical proximity sensor module including:
a plurality of light emitters configured to produce infra-red or near infra-red light for transmission through the display screen toward a target object, and further configured to produce an energy density such that a maximum energy density of light incident on a backside of the display screen is reduced while total energy is maintained to facilitate performance for proximity sensing; and
a light sensor operable to sense infra-red or near infra-red light reflected by the target object,
wherein the plurality of light emitters collectively are configured to provide sufficient optical energy for proximity sensing, the light emitters spreading out the optical energy for the proximity sensing, thereby reducing distortion of the display screen.