CN112804378A

CN112804378A - Electronic device

Info

Publication number: CN112804378A
Application number: CN201911030530.XA
Authority: CN
Inventors: 陈朝喜
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2021-05-14
Anticipated expiration: 2039-10-28
Also published as: CN112804378B

Abstract

The present disclosure relates to an electronic device. An electronic device comprises an OLED display screen and a distance sensor module, wherein the distance sensor module is arranged on a substrate of the OLED display screen, and the arrangement position of the distance sensor module is positioned on one side far away from the light emitting direction of the OLED display screen; the distance sensor module comprises a light receiving device and a convex lens arranged on a receiving light path of the light receiving device; the convex lens is used for converging infrared light incident from the OLED display screen side to the light receiving device; and the light receiving device is used for calculating a gray scale result according to the converged infrared light signals, and the gray scale result is used for determining the distance between the measured object and the distance sensor module. In this embodiment, the convex lens is arranged on the receiving optical path of the light receiving device, so that infrared light can be converged to the light receiving device, and the improvement of detection precision is facilitated.

Description

Electronic device

Technical Field

The present disclosure relates to the field of optical devices, and more particularly, to an electronic apparatus.

Background

At present, with the development of the full-screen technology, many functional components (such as a distance sensor module, a camera and the like) on the electronic equipment are transplanted below the display screen, so that the effective display area of the display screen is ensured. Taking the distance sensor module as an example, the infrared light emitting device in the distance sensor module emits light with wavelength 940nm outwards, and the light can excite the pixels on the display screen to emit light, i.e. the infrared light emitting device can excite the display screen to display light spots, damage the display screen and influence the user to watch.

Disclosure of Invention

The present disclosure provides an electronic device to solve the deficiencies of the related art.

According to a first aspect of the embodiments of the present disclosure, an electronic device is provided, which includes an OLED display screen and a distance sensor module, where the distance sensor module is disposed on a substrate of the OLED display screen, and a setting position is located on a side away from a light emitting direction of the OLED display screen; the distance sensor module comprises a light receiving device and a convex lens arranged on a receiving light path of the light receiving device;

the convex lens is used for converging infrared light incident from the OLED display screen side to the light receiving device;

and the light receiving device is used for calculating a gray scale result according to the converged infrared light signals, and the gray scale result is used for determining the distance between the measured object and the distance sensor module.

Optionally, the distance sensor module further includes a housing, and the light receiving device and the convex lens are respectively disposed on the housing.

Optionally, the light receiving device includes a photoelectric conversion circuit, an amplification circuit, and an analog-to-digital conversion circuit;

the photoelectric conversion circuit is used for converting the sensed optical signal into optical voltage and outputting the optical voltage to the amplifying circuit;

the amplifying circuit is used for amplifying the photovoltage by a set multiple and outputting the amplified photovoltage to the analog-to-digital conversion circuit;

the analog-to-digital conversion circuit is used for converting the amplified photovoltage into a digital gray scale result.

Optionally, the amplifying circuit includes a second operational amplifier, a fifth resistor, a pull-down resistor, a second capacitor, at least one feedback resistor, and switching devices corresponding to the feedback resistors one to one;

the non-inverting input end of the second operational amplifier is grounded through the pull-down resistor, the inverting input end of the second operational amplifier is connected with the output end of the photoelectric conversion circuit through the fifth resistor, and the output end of the second operational amplifier is connected with the output end of the amplifying circuit;

the second capacitor is connected in series between the inverting input end and the output end of the second operational amplifier;

the feedback resistor is connected in series with the corresponding switching device and then connected between the inverting input end and the output end of the second operational amplifier; and the control end of the switching device is used for receiving an external control signal so as to connect the feedback resistor of the serial branch where the switching device is located with the output end of the second operational amplification circuit.

Optionally, the photoelectric conversion circuit includes a photodiode, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, and a first operational amplifier;

the anode of the photodiode is grounded, and the cathode of the photodiode is connected with the inverting input end of the first operational amplifier through the first resistor;

the first capacitor is connected in series between the inverting input end and the output end of the first operational amplifier;

the fourth resistor is connected in series between the inverting input end and the output end of the first operational amplifier;

the second end of the second resistor is connected with the power supply, and the first end of the second resistor is respectively connected with the second end of the third resistor and the non-inverting input end of the first operational amplifier; the first end of the third resistor is grounded;

and the output end of the first operational amplification circuit is connected with the output end of the photoelectric conversion circuit.

Optionally, the analog-to-digital conversion circuit includes a sampling switch, a third capacitor, an analog-to-digital converter, and a timer;

the first end of the sampling switch is connected with the output end of the amplifying circuit, the second end of the sampling switch is respectively connected with the second end of the third capacitor and the input end of the analog-to-digital converter, and the control end of the sampling switch is connected with the output end of the timer;

the first end of the third capacitor is grounded;

the output end of the analog-to-digital converter is connected with the output end of the analog-to-digital conversion circuit.

Optionally, the distance sensor module further comprises at least 2 infrared light emitting devices disposed on the housing;

each infrared light emitting device of the at least 2 infrared light emitting devices is used for emitting light to a set range, an overlapping area exists in the set range corresponding to each infrared light emitting device outside a preset height, the luminous flux density in the overlapping area exceeds a set density threshold, and the luminous flux density outside the overlapping area is smaller than the set density threshold.

Optionally, the preset height is greater than or equal to the thickness of the OLED display screen.

Optionally, the at least 2 infrared light emitting devices are powered by the same power supply, and each infrared light emitting device includes an infrared light source and a series resistor; the first end of the infrared light source is grounded, and the second end of the infrared light source is connected with the first end of the series resistor; and the second end of the series resistor is connected with a power supply through a control switch.

Optionally, the distance measuring device further comprises a controller, wherein the controller is used for providing control signals for at least 2 infrared light emitting devices and the light receiving devices, and acquiring a gray scale result output by the light receiving devices to calculate and determine the distance between the measured object and the distance sensor module.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

known from the above-mentioned embodiment, through set up convex lens on light receiving device's receipt light path in this embodiment, can assemble infrared light to light receiving device, be favorable to promoting detection accuracy.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a block diagram illustrating an electronic device in accordance with an exemplary embodiment.

FIG. 2 is a graph illustrating gray scale data versus distance, according to an exemplary embodiment.

FIG. 3 is a block diagram illustrating another electronic device in accordance with an example embodiment.

Fig. 4 is a circuit diagram illustrating a distance sensor module according to an exemplary embodiment.

FIG. 5 is a block diagram illustrating an electronic device in accordance with an example embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of devices consistent with certain aspects of the present disclosure as recited in the claims below.

Fig. 1 is a schematic structural diagram of an electronic device according to an exemplary embodiment, which may be adapted to an electronic device requiring a distance sensor module. Use the smart mobile phone as an example, when the user needs to utilize the smart mobile phone to talk, this distance sensor module can detect the distance between display screen and the user to control the display screen black screen according to the actual distance that detects. Referring to fig. 1, an electronic device includes an OLED display screen 10 and a distance sensor module 20. The distance sensor module 20 is disposed on a substrate (not shown) of the OLED display panel 10, and the disposed position is located on a side (lower side in fig. 1) away from the light emitting direction of the OLED display panel. The distance sensor module 20 includes a light receiving device 24 and a convex lens 23 disposed on a receiving optical path of the light receiving device 24. Wherein the content of the first and second substances,

the convex lens 23 is used for converging infrared light incident from the OLED display screen side to the light receiving device 24.

And the light receiving device 24 is used for calculating a gray scale result according to the converged infrared light signal, and the gray scale result is used for determining the distance between the measured object and the distance sensor module 20.

In one embodiment, with continued reference to fig. 1, the distance sensor module 20 further includes a housing 21 and at least 2 infrared light emitting devices (

emitting devices

21 and 22 are shown in fig. 1) disposed on the housing 21.

Wherein:

each infrared light emitting device (21, 22) of at least 2 infrared light emitting devices emits light to a set range (the set range of the emitting device 21 is n1, the set range of the emitting device 22 is n2,) and the set range corresponding to each infrared light emitting device has an overlapping area M outside the preset height H. The light flux density within the overlapping region M exceeds a set density threshold and the light flux density outside the overlapping region M is less than the set density threshold.

It should be noted that the measurement starting point of the preset height H may be located on the emitting surface of the infrared light emitting device (or the light emitting surface of the LED lamp), and the measurement ending point may be located on the plane of the OLED display (facing the user) side of the electronic device, that is, after the electronic device is manufactured, the overlapping area M needs to be located outside the plane of the OLED display (facing the user) side of the electronic device. In one example, the preset height is greater than or equal to the thickness of the OLED display screen 10.

It should be noted that the convex lens 23 may be disposed at a set position of the housing for converging the infrared light returning from the overlapping region M to the light receiving device. The set position is any position within a predetermined range centered on the center axis of the overlapping region M. In other words, the closer the convex lens 23 is to the central axis of the overlapping area M, the better the function of converging infrared light is, and therefore, a technician can adjust the setting position according to a specific scene.

In this embodiment, the wavelength of the light emitted by each infrared light emitting device is between 940nm and 1000nm, and the emission direction is a set range, where the set range n is generally a cone, and the luminous flux density of the set range is related to the emission power of each infrared light emitting device. Therefore, the number of the infrared light emitting devices in this embodiment is 2 at the minimum, so that the light flux density in the regions n1 and n2 can be reduced to half, and the light flux density in the region where the display screen 10 is located can be reduced to half. As the number of infrared light emitting devices decreases, the luminous flux density decreases accordingly, so that pixels in the display screen are not excited to emit light and light spots appear. However, as the number of the infrared light emitting devices increases, the light flux density decreases, which causes the accuracy of the gray scale data output by the light receiving device 24, and therefore, in an embodiment, the number of the infrared light emitting devices may be three in combination with the light flux density and the accuracy of the gray scale data.

Of course, the skilled person can adjust the number of the infrared light emitting devices according to the wavelength or power of the light emitted by different infrared light emitting devices, and under the condition that the display screen does not display light spots, each scheme falls into the protection scope of the present disclosure.

In order to ensure the light emitting efficiency of the infrared light emitting devices, at least 2 infrared light emitting devices in this embodiment may be powered by the same power supply, and the same power supply may provide the same current for each infrared light emitting device, thereby ensuring that the emitting power and the luminance of each infrared light emitting device are the same. By taking at least 2 infrared light emitting devices connected in parallel as an example, the same power supply can provide the same voltage for each infrared light emitting device, so that the emitting power of each infrared light emitting device is ensured to be close, the emitting brightness is close, and after one infrared light emitting device is damaged, the distance sensor module can be continuously used, thereby being beneficial to prolonging the service life.

In this embodiment, the setting position of each infrared light emitting device needs to guarantee that there is overlap region M in respective setting range, and the height of this overlap region M needs to exceed the thickness of the display screen 10 of the electronic equipment where the distance sensor module is located, overlap region and infrared light emitting device are located the both sides of display screen 10 respectively promptly, reach the effect that the facula does not appear in the display screen.

In combination with the same power supply and the overlapping area M, in this embodiment, the arrangement manner of at least 2 infrared light emitting devices may be row arrangement, column arrangement or set pattern arrangement. For example, when the number of the LED lamps 22 exceeds 3, the set pattern may be triangular, rectangular, or the like, thereby enlarging the overlap area M. The skilled person can select a suitable arrangement according to a specific scenario, and the corresponding scheme falls within the scope of the present disclosure.

In this embodiment, the light receiving device 24 is configured to perform photoelectric conversion on the light signal after being turned on to obtain a photo voltage, and calculate a distance from the distance sensor module to the measured object according to a relationship curve between the photo voltage and a preset photo voltage and distance. Or, the light receiving device is configured to perform photoelectric conversion on the light signal after being turned on to obtain a photoelectric voltage, calculate a gray scale result (i.e., a digital gray scale result count obtained by performing analog-to-digital conversion on the photoelectric voltage in an analog form by the analog-to-digital conversion circuit) according to the photoelectric voltage and a preset correspondence table of the photoelectric voltage and the gray scale result, and output gray scale data.

In an embodiment, the processor of the electronic device where the distance sensor module 20 is located may perform data calculation according to the gray-scale data to obtain the distance. For example, the processor may perform calculation based on a relationship curve between gray scale data and distance as shown in fig. 2, where an abscissa represents an actual distance and an ordinate represents gray scale data in fig. 2, and finally an actual distance between the display screen and the measured object is obtained. Technical personnel can select a proper light receiving device to realize according to specific scenes, and under the condition that the functions can be realized, the corresponding scheme falls into the protection scope of the disclosure.

In consideration of the close distance between the infrared light emitting means (21, 22) and the light receiving means 24, a light wall structure 25 made of a light absorbing material may be provided in this embodiment. Referring to fig. 3, a predetermined groove is provided in the light wall structure 25, and the predetermined groove is used for disposing the light receiving device 24, that is, the volume of the predetermined groove is slightly larger than the volume of the light receiving device 24. Because the light wall structure 25 is made of light absorbing material, light emitted by the infrared light emitting device cannot directly enter the light receiving device 24, and meanwhile, ambient light at the bottom (lower part in fig. 3) of the light receiving device 24 cannot enter the light receiving device, so that the light receiving device 24 can only sense the reflected light of the light emitted by the infrared light emitting device after passing through the object to be detected, and the detection precision is improved.

In an embodiment, the distance sensor module 20 may further include a controller, the controller is configured to turn on the light receiving device 24 and at least 2 infrared light emitting devices according to an external control signal, that is, at least 2 infrared light emitting devices emit light, and the light receiving device 24 senses the reflected light, so as to perform distance detection; or for turning off the light receiving means 24 and the at least 2 infrared light emitting means in response to an external control signal. Of course, the controller may also perform data calculation according to the grayscale data to obtain the distance, and the specific steps may refer to the content of the distance calculated by the processor of the electronic device in the above embodiment, which is not described herein again.

Based on the operating principle of the distance sensor module 20 described in the foregoing embodiments, the embodiments of the present disclosure further provide a circuit implementation of the distance sensor module, and fig. 4 is a circuit diagram of a distance sensor module according to an exemplary embodiment. In fig. 4, the two solid lines intersect to indicate that the two lines are connected, and the two solid lines are correlated and have white circles to indicate that the two lines are not connected. Referring to fig. 4, the infrared light emitting device includes a light source (indicated by LED in fig. 4) and a series resistor R_LED. The first end (the lower end of the LED1 in FIG. 4) of the infrared light source LED is grounded GND, and the second end (the upper end of the LED1 in FIG. 4) is connected with the series resistor R_LED1First end (R in FIG. 4)_LED1Lower end of) connection; series resistor R_LED1Second end (R in FIG. 4)_LED1Upper end) of the control switch M1 is connected to a first end (terminal 1 of M1 in fig. 4) of the control switch M1; the second terminal (terminal 2 of M1 in FIG. 4) of the control switch M1 is connected to the preset power supply VDD, and the control terminal (terminal 3 of M1 in FIG. 4) of the control switch M1 is used for receiving the external control signalThe signal controls the control switch M1 to be turned on or off, and the infrared light source LED emits light when the control switch M1 is turned on.

With continued reference to fig. 4, the light receiving device 24 includes a photoelectric conversion circuit 241, an amplification circuit 242, and an analog-to-digital conversion circuit 243. Wherein the content of the first and second substances,

the photoelectric conversion circuit 241 includes a photodiode VD, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R3, a first capacitor C1, and a first operational amplifier U1A. The anode (lower end of VD in fig. 4) of the photodiode VD is grounded GND, and the cathode (upper end of VD in fig. 4) is connected to the inverting input terminal U1A (denoted by "-") of the first operational amplifier U1A via a first resistor R1. The first capacitor C1 is connected in series between the inverting input and the output of the first operational amplifier U1A. The fourth resistor R4 is connected in series between the inverting input terminal and the output terminal of the first operational amplifier U1A. A second end (left end of R2 in fig. 4) of the second resistor R2 is connected to the power supply VDD, and a first end (right end of R2 in fig. 4) is connected to a second end (upper end of R3 in fig. 4) of the third resistor R3 and a non-inverting input end (denoted by "+") of the first operational amplifier U1A, respectively; a first end (a lower end of R2 in fig. 4) of the third resistor R3 is grounded to GND. The output terminal of the first operational amplifier U1A is connected to the output terminal of the photoelectric conversion circuit 241. Thus, the photoelectric current is converted into a voltage by the first resistor R1, and the voltage is amplified by R4/R1 times to obtain a photovoltage. That is, the photoelectric conversion circuit 241 may convert the sensed optical signal into a photovoltage and output the photovoltage to the amplification circuit.

The amplifying circuit 242 includes a second operational amplifier U2A, a fifth resistor R5, a pull-down resistor Rg, a second capacitor C2, at least one feedback resistor Rf, and switching devices Mf in one-to-one correspondence with the feedback resistors Rf. The non-inverting input terminal (indicated by "+") of the second operational amplifier U2A is grounded GND through the pull-down resistor Rg, the inverting input terminal (indicated by "-") is connected to the output terminal of the photoelectric conversion circuit 241 through the fifth resistor R5, and the output terminal is connected to the output terminal of the amplifying circuit 242. The second capacitor C2 is connected in series between the inverting input and the output of the second operational amplifier U2A. Each feedback resistor Rf is connected in series with its corresponding switching device Mf and then connected in series between the inverting input terminal and the output terminal of the second operational amplifier U2A. The control terminal of the switching device Mf (located at the terminal 3 in M1) is used to receive an external control signal, so that the feedback resistor of the series branch thereof is connected to the output terminal of the second operational amplifier U2A. In this way, the amplifying circuit 242 is configured to amplify the photo voltage by a set factor and output the amplified photo voltage to the analog-to-digital conversion circuit 243.

At least one feedback resistor Rf is provided in the amplifier circuit 242. For example, when a feedback resistor Rf is provided, the requirement of photo-voltage amplification (with Rf/R5 amplification) can be satisfied. In addition, the second operational amplifier U2A, the pull-down resistor Rg, the fifth resistor R5, the feedback resistor Rf, and the second capacitor may form a low-pass filter, so as to select the photo-voltage signal of the corresponding frequency and filter the voltage signals of other frequencies. For another example, when a plurality of feedback resistors Rf are provided, the smaller the equivalent value of the feedback resistor as the number of the feedback resistors Rf connected increases, the smaller the amplification factor of the amplifier circuit (the amplification factor Rf/R5) becomes, and the higher frequency voltage signal can be filtered. In other words, the present embodiment can make the amplifying circuit 242 have different gains by providing a plurality of feedback resistors, so as to adapt to different electronic devices or usage scenarios.

The analog-to-digital conversion circuit 243 includes a sampling switch M2, a third capacitor C3, an analog-to-digital converter, and a timer. A first terminal (terminal 1) of the sampling switch M2 is connected to the output terminal of the amplifying circuit 242, a second terminal (terminal 2) is connected to a second terminal (upper end of C3 in fig. 4) of the third capacitor C3 and the input terminal of the analog-to-digital converter, and a control terminal (terminal 3) is connected to the output terminal of the timer. The first terminal (the lower terminal of C3 in fig. 4) of the third capacitor C3 is grounded GND. The output end of the analog-to-digital converter is connected with the output end of the analog-to-digital conversion circuit. In this way, the analog-to-digital conversion circuit 243 is used to convert the amplified photo voltage into a digital gray scale result.

The operation of the distance sensor module 20 shown in fig. 4 includes: the processor sends a control signal to the control switch M1, the control switch M1 is turned on, and current passes through the infrared light source LED to emit infrared light outwards.

In combination with the positional relationship shown in fig. 1, when the object to be measured is located in the overlapping area M, the exit direction of part of the infrared light rays is changed to reach the convex lens. The convex lens converges the infrared light to the photodiode VD. The photo-current in the photodiode VD forms a voltage signal, which is amplified and filtered by the first operational amplifier U1A to obtain a photo-voltage. The photovoltage is amplified and filtered by a second operational amplifier U2A, and the photovoltage which can be identified by the analog-to-digital converter is obtained. The sample is sampled by the sampling switch M2, converted into a gray scale result (Count value) by the analog-to-digital converter, and sent to the processor.

The processor can calculate according to the gray scale result based on the relationship curve between the gray scale data and the distance shown in fig. 2, and obtain the actual distance between the display screen and the measured object.

FIG. 5 is a block diagram illustrating an electronic device in accordance with an example embodiment. For example, the electronic device 500 may be a smartphone, a computer, a digital broadcast terminal, a tablet device, a medical device, an exercise device, a personal digital assistant, etc., that includes the distance sensor module shown in fig. 1-4.

Referring to fig. 5, electronic device 500 may include one or more of the following components: processing component 502, memory 504, power component 506, multimedia component 508, audio component 510, input/output (I/O) interface 512, sensor component 514, communication component 516, and image capture component 518.

The processing component 502 generally operates the electronic device 500 as a whole, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 502 may include one or more processors 520 to execute instructions. Further, the processing component 502 can include one or more modules that facilitate interaction between the processing component 502 and other components. For example, the processing component 502 can include a multimedia module to facilitate interaction between the multimedia component 508 and the processing component 502.

The memory 504 is configured to store various types of data to support operations at the electronic device 500. Examples of such data include instructions for any application or method operating on the electronic device 500, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 504 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

The power supply component 506 provides power to the various components of the electronic device 500. The power components 506 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the electronic device 500.

The multimedia component 508 includes a screen providing an output interface between the electronic device 500 and the target object. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a target object. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.

The audio component 510 is configured to output and/or input audio signals. For example, the audio component 510 includes a Microphone (MIC) configured to receive external audio signals when the electronic device 500 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 504 or transmitted via the communication component 516. In some embodiments, audio component 510 further includes a speaker for outputting audio signals.

The I/O interface 512 provides an interface between the processing component 502 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc.

The sensor assembly 514 includes one or more sensors for providing various aspects of status assessment for the electronic device 500. For example, the sensor assembly 514 may detect an open/closed state of the electronic device 500, the relative positioning of components, such as a display and keypad of the electronic device 500, the sensor assembly 514 may detect a change in the position of the electronic device 500 or a component, the presence or absence of a target object in contact with the electronic device 500, orientation or acceleration/deceleration of the electronic device 500, and a change in the temperature of the electronic device 500. In one example, the sensor assembly 514 includes the distance sensor module shown in fig. 1-4, and reference is made to the above embodiments.

The communication component 516 is configured to facilitate wired or wireless communication between the electronic device 500 and other devices. The electronic device 500 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 516 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 516 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the electronic device 500 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic components.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. The electronic equipment is characterized by comprising an OLED display screen and a distance sensor module, wherein the distance sensor module is arranged on a substrate of the OLED display screen, and the arrangement position of the distance sensor module is positioned on one side far away from the light emitting direction of the OLED display screen; the distance sensor module comprises a light receiving device and a convex lens arranged on a receiving light path of the light receiving device;

2. The electronic device according to claim 1, wherein the distance sensor module further comprises a housing, and the light receiving device and the convex lens are respectively disposed on the housing.

3. The electronic device according to claim 1 or 2, wherein the light receiving means includes a photoelectric conversion circuit, an amplification circuit, and an analog-to-digital conversion circuit;

4. The electronic device according to claim 3, wherein the amplifying circuit comprises a second operational amplifier, a fifth resistor, a pull-down resistor, a second capacitor, at least one feedback resistor, and a switching device in one-to-one correspondence with each feedback resistor;

5. The electronic device according to claim 3, wherein the photoelectric conversion circuit includes a photodiode, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, and a first operational amplifier;

6. The electronic device of claim 3, wherein the analog-to-digital conversion circuit comprises a sampling switch, a third capacitor, an analog-to-digital converter, and a timer;

the first end of the third capacitor is grounded;

7. The electronic device of claim 1, wherein the distance sensor module further comprises at least 2 infrared light emitting devices disposed over the housing;

8. The electronic device of claim 7, wherein the predetermined height is greater than or equal to a thickness of the OLED display screen.

9. The electronic device of claim 7, wherein the at least 2 infrared light emitting devices are powered by a same power source, and the infrared light emitting devices comprise an infrared light source and a series resistor; the first end of the infrared light source is grounded, and the second end of the infrared light source is connected with the first end of the series resistor; and the second end of the series resistor is connected with a power supply through a control switch.

10. The electronic device of claim 7, further comprising a controller, wherein the controller is configured to provide control signals for at least 2 infrared light emitting devices and the light receiving devices, and obtain the grayscale result output by the light receiving devices to calculate and determine a distance between the measured object and the distance sensor module.