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Light-emitting bare chip, emission module, sensing device and electronic equipment

A bare-chip, light-sensing technology, applied in the field of photoelectric sensing, can solve the problems such as the inability to meet the needs of higher-precision scenarios and the low sensing accuracy of TOF devices

Pending Publication Date: 2021-05-28
SHENZHEN FUSHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the sensing accuracy of existing TOF devices is low and cannot meet the needs of higher precision scenarios

Method used

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  • Light-emitting bare chip, emission module, sensing device and electronic equipment
  • Light-emitting bare chip, emission module, sensing device and electronic equipment
  • Light-emitting bare chip, emission module, sensing device and electronic equipment

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Embodiment Construction

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0051] It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures. Furthermore, the described features and structures may be combined in any suitable manner in one or more embodiments.

[0052] In the description of the present application, it should be understood that the terms "first" and "second" are only used for the purpose...

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PUM

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Abstract

The invention provides a light-emitting bare chip, an emission module, a sensing device and electronic equipment. The light-emitting bare chip comprises a first switch connected between a first power supply and a first node, a sensing light source used for emitting a sensing light pulse, and a single photon avalanche diode; the single photon avalanche diode and the sensing light source are connected in series between the first node and the ground; an energy storage capacitor is further connected between the first node and the ground, and the energy storage capacitor is located outside the light-emitting bare chip; the energy storage capacitor is used for receiving the voltage from the first power supply through the conducted first switch, storing electric energy and biasing the voltage of the single photon avalanche diode to a preset avalanche voltage in advance; and the energy storage capacitor is further used for discharging the sensing light source when the single photon avalanche diode generates avalanche so as to trigger the sensing light source to emit the sensing light pulse. The transmitting module, the sensing device and the electronic equipment comprise the light-emitting bare chip.

Description

technical field [0001] The present application relates to the technical field of photoelectric sensing, and more specifically, to a transmitting module in a time-of-flight device, a time-of-flight device and electronic equipment. Background technique [0002] Time of Flight (TOF) device calculates the distance or depth of an object by measuring the time of flight of light pulses in space. It is widely used in consumer products due to its advantages of long sensing distance and large measurement range. Electronics, unmanned driving, AR / VR and other fields. [0003] The TOF device includes a transmitting module and a receiving module. The emitting module is used for emitting light pulses to the target space to provide illumination. The receiving module is used to receive the light pulse returned from the external object, and calculate the distance of the object according to the time required for the light pulse from emission to reception. [0004] However, the sensing accur...

Claims

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Application Information

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IPC IPC(8): G01S17/08G01S7/484G01S7/4865H02J7/34
CPCG01S7/484G01S7/4865G01S17/08H02J7/345
Inventor 王小明吕晨晋李佳鹏
Owner SHENZHEN FUSHI TECH CO LTD