Screen inspection apparatus and photodetector

Abstract

The embodiments of the present application relate to the technical field of communications. Provided are a screen inspection apparatus and a photodetector, which are used for detecting whether screen flickering of a display screen of an electronic device meets standards, thereby effectively intercepting the problem of screen flickering in a production line. The screen inspection apparatus comprises: a cabinet and a photodetector, wherein an inspection cavity is provided in the cabinet, and the inspection cavity is used for accommodating an electronic device; the photodetector is used for collecting the screen brightness of a display screen and performing photoelectric conversion; and the photodetector is provided in the inspection cavity and is connected to the cabinet, and a light incident side faces the display screen.

Description

Screen detection device and photodetector

[0001] The present application claims priority to the Chinese patent application No. 202422314461.8, filed on September 20, 2024, entitled "A screen detection device and photodetector", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the field of communication technology, and in particular to a screen detection device and photodetector. BACKGROUND

[0003] With the development of communication technology, more and more electronic devices appear in people's life. Along with it, the user's screen use time is increasing, and the user's demand for screen eye protection function is also increasing. Screen flicker is a key item for evaluating screen eye protection function, and is also a key item affecting the post-market maintenance rate and net recommendation value of electronic devices. In actual production, the Stroboscopic Visibility Measure (SVM) is used to measure whether the screen flicker of the electronic device meets the standard. However, the camera of the production line equipment cannot quantify the screen flicker, and in production, it can only be judged by the human eye. Compared with automatic equipment, the interception of the human eye has strong subjectivity, poor accuracy, and lower efficiency.

[0004] Practical new type content

[0005] Embodiments of the present application provide a screen detection device and photodetector for detecting whether the screen flicker of the display screen of an electronic device meets the standard, which can effectively intercept electronic devices with non-standard screen flicker on the production line, avoiding the problems of strong subjectivity, poor accuracy and low efficiency of manual detection.

[0006] To achieve the above-mentioned purpose, the embodiments of the present application adopt the following technical solutions:

[0007] In a first aspect, a screen detection device is provided, comprising: a cabinet and a photodetector. The screen detection device is used for detecting the display screen of an electronic device. The cabinet is provided with a detection cavity for accommodating the electronic device and the photodetector. The photodetector is arranged in the detection cavity and connected with the cabinet. The light entrance side of the photodetector faces the display screen, which is used for collecting the screen brightness of the display screen and performing photoelectric conversion.

[0008] In the working state of the screen detection device, the electronic equipment is sent into the cabinet detection cavity, and the light entrance side of the photoelectric detector faces the display screen of the electronic equipment. The photoelectric detector collects the light signal emitted by the display screen and converts the light signal into an electric signal. The screen detection device can give a screen flicker test conclusion of the electronic equipment according to the electric signal. According to the screen flicker test conclusion, the screen flicker substandard electronic equipment can be intercepted by numerical card control on the production line. The screen detection device provided by the embodiment of the application can realize quantitative and automatic screen flicker test on the production line. The display screen of the electronic equipment can be tested on the production line, the consistency of the screen flicker performance of the electronic equipment flowing into the market is ensured, the product quality is guaranteed, and the problems of strong subjectivity, poor accuracy and low efficiency of manual detection are avoided.

[0009] In some embodiments, the screen detection device further comprises a probe support. The probe support is arranged in the detection cavity and connected with the cabinet. The probe support is used for mounting the photoelectric detector. The probe support is further provided with a mounting hole. A part of the photoelectric detector penetrates through the mounting hole and is connected with the probe support. In this way, the probe support can fix the photoelectric detector in the detection cavity and provide support for the photoelectric detector. The photoelectric detector is mounted through the probe support, which is more convenient for disassembly and maintenance of the photoelectric detector. At least the light entrance side of the photoelectric detector penetrates through the mounting hole, which is convenient for the photoelectric detector to collect the light signal.

[0010] In a possible implementation, the probe support comprises a support plate and a light shielding plate. The mounting hole is arranged on the support plate. The support plate is connected with the cabinet and the photoelectric detector. The light shielding plate is located on the side of the support plate and connected with the support plate. The light shielding plate extends along the side where the light entrance side of the photoelectric detector is located. In this way, the support plate is used to fix the photoelectric detector in the detection cavity, and the light shielding plate blocks the light signal outside the display screen, so that the light signal collected by the photoelectric detector is more accurate.

[0011] In a possible implementation, the plate surface of the support plate is rectangular; the probe support is provided with five mounting holes, which are four first mounting holes and one second mounting hole; the vertical projections of the four first mounting holes on the plate surface of the support plate are located at the four corners of the rectangle respectively; and the four first mounting holes are arranged around the periphery of the second mounting hole. In this way, the shape of the plate surface of the support plate is the same as the general outline shape (for example, a rectangle) of the electronic equipment. When the probe support comprises the light shielding plate, the rectangular support plate cooperates with the light shielding plate to adapt to the outline of the electronic equipment, and better realize the light shielding effect. The five mounting holes can mount five photoelectric detectors, and at least the light entrance side of the photoelectric detector penetrates through the mounting hole to collect the light signal of the display screen.

[0012] It can be understood that the light signal distribution of the central region of the display screen of the electronic device is more uniform. One second mounting hole can collect the light signal of the center of the display screen, and four first mounting holes can collect the light signals of the four corners of the display screen. Using only the photodetector on the second mounting hole to collect the light signal of the center of the display screen can save costs. Meanwhile, using five photodetectors to collect the light signals of the five regions of the display screen and comprehensively processing the collected results can obtain more reliable data, which is especially suitable for the case that the display screen is relatively large.

[0013] In some embodiments, the screen detection device further comprises a cabinet clamp arranged in the detection cavity and located on the light-incident side of the photodetector; a groove for accommodating the electronic device is formed on the cabinet clamp, and the cabinet clamp is used to connect with the electronic device. In this way, the groove can be used to position the electronic device, so that each electronic device to be detected is in the same position in the detection state, thereby better ensuring the consistency of the detection environment of all electronic devices.

[0014] In some embodiments, a slide is formed on the cabinet and communicates with the detection cavity. The slide is located on the light-incident side of the photodetector. The screen detection device further comprises a pulling structure. A part of the pulling structure extends into the slide and is in sliding or rolling connection with the cabinet. The cabinet clamp is arranged on the part of the pulling structure located in the slide. In this way, the part of the pulling structure located in the slide can move relative to the slide and move out of the detection cavity. The movement of the part of the pulling structure located in the slide can drive the cabinet clamp fixed on the part of the pulling structure located in the slide to move. The cabinet clamp can move out of the detection cavity, thereby facilitating the fixation of the electronic device to be detected on the cabinet clamp.

[0015] In some embodiments, the screen detection device comprises at least two photodetectors and at least two cabinet clamps. The vertical projection of one photodetector on the part of the pulling structure located in the slide is located within the vertical projection of the groove of one cabinet clamp on the part of the pulling structure located in the slide. In this way, when the electronic device to be detected is fixed on the cabinet clamp and located in the detection cavity, the photodetector is opposite to the display screen, thereby ensuring that the photodetector is opposite to the display screen.

[0016] In some embodiments, the probe support comprises a support plate, and a mounting hole is formed on the support plate. The support plate is connected with the cabinet and the photodetector. The vertical projection of the support plate on the part of the pulling structure located in the slide completely covers the vertical projection of the groove on the part of the pulling structure located in the slide. In this way, when the electronic device to be detected is fixed on the cabinet clamp and located in the detection cavity, the support plate of the probe support completely covers the display screen, thereby ensuring the light-shielding effect of the probe support.

[0017] In some embodiments, the screen detection device further comprises an oscilloscope and a processor. The oscilloscope and the processor are both arranged in the cabinet. The oscilloscope is electrically connected with the output end of the photodetector. The processor is electrically connected with the oscilloscope and the electronic device. The oscilloscope can further process the electrical signal output by the photodetector. The oscilloscope can convert the analog signal output by the photodetector into a digital signal, thereby providing a data basis for subsequent calculation of the measurement value of the flicker of the screen of the electronic device. The oscilloscope can also perform noise processing and bandwidth limitation on the signal output by the photodetector. The processor can further process the electrical signal output by the oscilloscope. The processor can calculate the measurement value of the flicker of the screen of the electronic device using the digital signal output by the oscilloscope, determine whether the measurement value of the flicker of the screen is within the specification requirements, and then give a conclusion of the flicker test of the screen of the electronic device.

[0018] In some embodiments, the photodetector comprises a first circuit board, a second circuit board, a power supply interface, a signal output interface, a signal processing component, and a photoelectric sensor. The first circuit board and the second circuit board are arranged in a stack, and the first circuit board is electrically connected with the second circuit board. The power supply interface is arranged on the first circuit board and is electrically connected with the first circuit board. The signal output interface is arranged on the second circuit board and is electrically connected with the second circuit board. The signal processing component is arranged on the second circuit board and is electrically connected with the power supply interface through the second circuit board and the first circuit board. The photoelectric sensor is arranged on the second circuit board. The light entrance surface of the photoelectric sensor serves as the light entrance side of the photodetector and is arranged away from the second circuit board. The signal processing component is connected between the photoelectric sensor and the signal output interface.

[0019] In this way, the photoelectric sensor is used to collect the light signal on the display screen and convert the light signal into a first electrical signal. The signal processing component receives the first electrical signal output by the photoelectric sensor, processes the first electrical signal, and outputs a second electrical signal. The second circuit board outputs the second electrical signal to the processing device of the screen detection device through the signal output interface. The first circuit board connects to an external power supply through the power supply interface to supply power to all components in the photodetector.

[0020] In some embodiments, the power supply interface is arranged on the side of the first circuit board away from the second circuit board; the second circuit board has a first surface facing the first circuit board and a second surface away from the first circuit board; the signal output interface is located on the first surface; and the photoelectric sensor and the signal processing component are located on the second surface. The direction perpendicular to the first circuit board is defined as the vertical direction. In this way, the first circuit board and the second circuit board can be arranged in a stack, and the power supply interface and the signal output interface can share the space in the vertical direction. This saves the space of the photodetector in the vertical direction, thereby facilitating the miniaturization design of the photodetector.

[0021] In some embodiments, the photoelectric detector further comprises a housing and a cover. The housing has a mounting groove. The cover covers the opening of the mounting groove and surrounds the mounting groove to form a receiving cavity. The first circuit board, the second circuit board, the signal processing component, at least a part of the power supply interface, and at least a part of the signal output interface are located in the receiving cavity. A part of the photoelectric sensor is located in the receiving cavity, and the light entrance surface of the photoelectric sensor is located outside the housing. In this way, the housing and the cover cover the functional components of the photoelectric detector outside, which can prevent the functional components from being affected by the external environment. A part of the power supply interface is located in the receiving cavity, and the other part penetrates the housing and can be connected to an external power supply. A part of the signal output interface is located in the receiving cavity, and the other part penetrates the housing and can be connected to a processor of a screen detection device. A part of the photoelectric sensor is located in the receiving cavity, and the light entrance surface is located outside the housing, which can facilitate the collection of light signals.

[0022] In some embodiments, the cover is provided with an adjusting hole. The photoelectric detector comprises at least two signal processing components, which are a filter amplifier and an impedance matching component, respectively. The filter amplifier is electrically connected between the photoelectric sensor and the impedance matching component. The impedance matching component is also electrically connected to the signal output interface. The screen detection device further comprises an impedance adjusting knob for adjusting the impedance matching value of the impedance matching component. The impedance adjusting knob is arranged on the second circuit board and is electrically connected to the impedance matching component. The impedance adjusting knob penetrates the first circuit board and is exposed in the adjusting hole. In this way, the impedance matching of the photoelectric detector can be adjusted through the impedance matching adjusting knob, so that the photoelectric detector can be compatible with various oscilloscope devices.

[0023] In some embodiments, the cover is provided with a first light transmission hole. The photoelectric detector further comprises a lamp bead arranged on the first circuit board, and the lamp bead is electrically connected to the first circuit board and the power supply interface. A part of the lamp bead is exposed in the first light transmission hole. In this way, when the power supply is normal, the lamp bead is on; when the power supply is abnormal, the lamp bead is off. If the lamp bead is on but the photoelectric detector cannot work normally, the cause of the abnormal power supply can be excluded.

[0024] In some embodiments, a part of the signal output interface and at least a part of the power supply interface are arranged on the side of the first circuit board away from the second circuit board; the side of the signal output interface away from the second circuit board has a first spacing H1 with the cover; the side of the power supply interface away from the second circuit board has a second spacing H2 with the cover; the photoelectric detector further comprises at least one supporting column located in the receiving cavity; one end of the supporting column abuts against the second circuit board, and the other end of the supporting column is connected to the cover; the height of the supporting column is H3; wherein H3>H1; H3>H2. In this way, the height H3 of the supporting column is greater than the space H1 and H2 required by the power supply interface and the signal output interface in the vertical direction, which can ensure the normal installation of the photoelectric detector.

[0025] In some embodiments, the power supply interface is a type-C interface or a USB interface. In this way, the photoelectric detector uses a universal interface for external power supply, which can improve the maintainability of the photoelectric detector and make it more convenient for users to use.

[0026] In some embodiments, the photoelectric detector further comprises a first connecting member penetrating through the cover, the support column, the second circuit board, and the shell. In this way, the first connecting member can fix the cover, the support column, the second circuit board, and the shell, and the photoelectric detector can be fixed and installed through only one connecting structure, which is beneficial to the miniaturization design of the photoelectric detector.

[0027] In some embodiments, the photoelectric detector further comprises a second connecting member penetrating through the first circuit board and the second circuit board. In this way, the second connecting member can fix the first circuit board and the second circuit board, and assist the layering of the first circuit board and the second circuit board.

[0028] In some embodiments, the photoelectric detector further comprises a protective cover arranged on the side of the photoelectric sensor away from the shell, and the protective cover is connected with the shell. A second light-transmitting hole is formed in the protective cover, and the second light-transmitting hole exposes the light-incident surface. In this way, the protective cover can protect the light-incident surface of the photoelectric sensor located outside the shell, and the light-incident surface of the photoelectric sensor can collect light signals through the second light-transmitting hole.

[0029] In a second aspect, the photoelectric detector comprises a first circuit board, a second circuit board, a power supply interface, a signal output interface, a signal processing component, and a photoelectric sensor. The first circuit board and the second circuit board are arranged in a stacked manner, and the first circuit board is electrically connected with the second circuit board. The power supply interface is arranged on the first circuit board and electrically connected with the first circuit board. The signal output interface is arranged on the second circuit board and electrically connected with the second circuit board. The signal processing component is arranged on the second circuit board and electrically connected with the power supply interface through the second circuit board and the first circuit board. The photoelectric sensor is arranged on the second circuit board. The light-incident surface of the photoelectric sensor serves as the light-incident side of the photoelectric detector, and the light-incident surface is arranged away from the second circuit board. The signal processing component is connected between the photoelectric sensor and the signal output interface.

[0030] In this way, the photoelectric sensor is used to collect light signals on the display screen and convert the light signals into first electric signals. The signal processing component receives the first electric signals output by the photoelectric sensor, processes the first electric signals, and outputs second electric signals. The second circuit board outputs the second electric signals to the processor of the screen detection device through the signal output interface. The first circuit board is connected with an external power supply through the power supply interface to supply power to all components in the photoelectric detector.

[0031] The photoelectric detector provided by the embodiments of the present application can be applied to various scenarios of converting optical signals into electrical signals. The first circuit board and the second circuit board are arranged in a stacked manner, the space occupied by the first circuit board and the second circuit board in the vertical direction can be compressed, the miniaturized design of the photoelectric detector is realized, and the photoelectric sensor is applicable to more application scenarios.

[0032] In some embodiments, the power supply structure is arranged on the side of the first circuit board away from the second circuit board; the second circuit board has a first surface facing the first circuit board and a second surface away from the first circuit board; the signal output interface and the signal processing component are located on the first surface; and the photoelectric sensor is located on the second surface. In this way, the functional structures of the second circuit board and the first circuit board are arranged on the two surfaces away from each other, which facilitates the stacking of the second circuit board and the first circuit board, and is conducive to the miniaturized design of the photoelectric detector. BRIEF DESCRIPTION OF DRAWINGS

[0033] FIG. 1 is a structural schematic diagram of a cabinet according to an embodiment of the present application;

[0034] FIG. 2 is a structural schematic diagram of a photoelectric detector according to an embodiment of the present application;

[0035] FIG. 3 is a structural schematic diagram of an electronic device according to an embodiment of the present application;

[0036] FIG. 4 is an exploded view of a structural schematic diagram of a photoelectric detector mounted on a probe support according to an embodiment of the present application;

[0037] FIG. 5 is a structural schematic diagram of a probe support according to an embodiment of the present application, the probe support having one mounting hole;

[0038] FIG. 6 is a structural schematic diagram of a probe support according to an embodiment of the present application, the probe support having five mounting holes;

[0039] FIG. 7 is an exploded view of a structural schematic diagram of an electronic device arranged in a cabinet clamp according to an embodiment of the present application;

[0040] FIG. 8 is a structural schematic diagram of a cabinet clamp according to an embodiment of the present application, the size of the groove on the cabinet clamp being fixed;

[0041] FIG. 9A is a structural schematic diagram of a cabinet clamp according to an embodiment of the present application, the size of the groove on the cabinet clamp being changeable;

[0042] FIG. 9B is a structural schematic diagram of the cabinet clamp in FIG. 9A after the size of the groove is changed;

[0043] FIG. 10 is a structural schematic diagram of a cabinet according to an embodiment of the present application, the detection cavity of the cabinet having a slide;

[0044] Fig. 11 is a structural schematic diagram of a cabinet provided by an embodiment of the present application, wherein the cabinet is provided with a drawer structure, and the drawer structure is connected with the detection cavity through sliding or rolling;

[0045] Fig. 12A is a structural schematic diagram of a cabinet provided by an embodiment of the present application, wherein two cabinet clamps and two photoelectric detectors are arranged in the cabinet;

[0046] Fig. 12B is a top view of Fig. 12A;

[0047] Fig. 13A is a structural schematic diagram of a cabinet provided by an embodiment of the present application, wherein the photoelectric detector is installed on the probe support, the vertical projection of the supporting plate on the drawer structure completely covers the vertical projection of the groove on the drawer structure;

[0048] Fig. 13B is a top view of Fig. 13A;

[0049] Fig. 14 is a structural schematic diagram of a cabinet provided by an embodiment of the present application, wherein an oscilloscope and a processor are arranged in the cabinet;

[0050] Fig. 15 is a module diagram of a processor realized through a circuit structure provided by an embodiment of the present application;

[0051] Fig. 16 is a structural schematic diagram of a photoelectric detector provided by an embodiment of the present application;

[0052] Fig. 17 is a working process schematic diagram of a photoelectric detector provided by an embodiment of the present application;

[0053] Fig. 18 is a working process schematic diagram of a photoelectric detector provided by an embodiment of the present application, wherein the first circuit board comprises a boost power supply module, and the second circuit board comprises an impedance matching module and a filter amplification module;

[0054] Fig. 19 is a structural schematic diagram of a first circuit board and a second circuit board connected through a second connecting piece provided by an embodiment of the present application;

[0055] Fig. 20 is a structural schematic diagram of a photoelectric detector provided by an embodiment of the present application, wherein the photoelectric detector is provided with a shell and a cover;

[0056] Fig. 21 is a structural schematic diagram of a photoelectric detector provided by an embodiment of the present application, wherein the photoelectric detector is provided with an impedance adjusting knob;

[0057] Fig. 22 is a circuit realization manner diagram of an impedance matching module of a photoelectric detector provided by an embodiment of the present application;

[0058] Fig. 23 is a structural schematic diagram of a photoelectric detector provided by an embodiment of the present application, wherein the photoelectric detector is provided with a lamp bead;

[0059] Fig. 24 is a structural schematic diagram of a photoelectric detector provided by an embodiment of the present application, wherein the photoelectric detector is provided with a supporting column;

[0060] Fig. 25 is an exploded view of a structure in which a photodetector is fixedly connected by a first connecting piece according to an embodiment of the present application;

[0061] Fig. 26 is a flow chart of a method for screen flicker detection by a screen detection device and a photodetector according to an embodiment of the present application.

[0062] Reference signs: 01-cabinet; 011-detection cavity; 012-pulling structure; 013-slide; 02-photodetector; 020-light-in side; 021-first circuit board; 0211-power supply interface; 0212-lamp bead; 022-second circuit board; 022A-first surface; 022B-second surface; 0221-signal output interface; 0222-signal processing element; 0223-impedance adjustment knob; 023-optical sensor; 0231-light-in surface; 024-housing; 0241-receiving cavity; 0242-first opening; 0243-second opening; 0244-third opening; 025-cover; 0251-adjusting hole; 0252-light-transmitting hole; 026-protective cover; 0261-second light-transmitting hole; 027-supporting column; 028-first connecting piece; 0281-first connecting hole; 029-second connecting piece; 0291-second connecting hole; 03-electronic device; 031-display screen; 04-probe support; 041-supporting plate; 042-shading plate; 043-mounting hole; 0431-first mounting hole; 0432-second mounting hole; 05-cabinet clamp; 051-groove; 05A-first part; 05B-second part; 05C-third part; 05D-fourth part; 06-processing device; 061-oscilloscope; 062-processor; 0611-first operation panel; 0621-second operation panel. DETAILED DESCRIPTION

[0063] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings.

[0064] Hereinafter, the terms “first”, “second”, and the like are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with “first”, “second”, and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of “a plurality of” is two or more. The term “A and / or B” includes the following three combinations: only A, only B, and the combination of A and B.

[0065] In addition, in the present application, the orientation terms such as "upper", "lower", etc. are defined relative to the orientation in which the components in the drawings are shown, and it should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and can change accordingly according to the change of the orientation in which the components in the drawings are placed.

[0066] Screen flicker is a key item for evaluating the eye protection function of a screen, and is also a key item affecting the after-sales maintenance rate and net recommendation value of an electronic device. In actual production, SVM is used to measure whether the screen flicker of the electronic device meets the standard. However, the camera of the production line equipment cannot quantify the screen flicker, and in production, the screen flicker can only be judged by the human eye. Compared with the automatic equipment, the interception of the human eye is highly subjective, the accuracy is poor, and the efficiency is also lower. How to realize the quantifiable screen flicker test of the production line is a problem to be solved at present.

[0067] To solve the above problems, the embodiment of the present application provides a screen detection device, which can be used in various spectral detection scenes. In the embodiment of the present application, the screen detection device is applied to the scene of measuring screen flicker by production line equipment. The electronic device can realize the quantifiable screen flicker test of the production line, and effectively intercept the screen flicker problem on the production line.

[0068] The screen detection device provided by the embodiment of the present application comprises a cabinet and a photoelectric detector, which are used for detecting a display screen of an electronic device.

[0069] As shown in FIG. 1, the cabinet 01 is provided with a detection cavity 011, and the detection cavity 011 is used for accommodating an electronic device 03 and a photoelectric detector 02. As shown in FIG. 2, the photoelectric detector 02 comprises an incident light side 020. As shown in FIG. 3, the electronic device 03 comprises a display screen 031.

[0070] For the convenience of description, the xyz coordinate axis is established in the drawings, wherein the z direction can be perpendicular to the incident light side 020 of the photoelectric detector 02, the xy plane formed by the x direction and the y direction can be parallel to the incident light side 020 of the photoelectric detector 02, and the x direction is the extension direction of the detection cavity 011.

[0071] In combination with FIGS. 1 to 3, the photoelectric detector 02 is arranged in the detection cavity 011 and connected with the cabinet 01. The incident light side 020 of the photoelectric detector 02 faces the display screen 031 of the electronic device 03. The photoelectric detector 02 is used for collecting the screen brightness of the display screen 031 and performing photoelectric conversion.

[0072] When the screen detection device is in working state, the electronic device 03 is adjusted to a specified screen brightness and a specified picture, and then the electronic device 03 is sent into the detection cavity 011, so that the light-in side of the photodetector 02 faces the display screen 031 of the electronic device 03. The photodetector 02 collects the light signal emitted by the display screen 031 and converts the light signal into an electric signal. According to the electric signal, the screen detection device can give a screen flicker test conclusion of the electronic device 03. According to the screen flicker test conclusion, the electronic device 03 with a substandard screen flicker can be intercepted through numerical card control on the production line.

[0073] The electronic device is not limited in the embodiments of the present application, and can be any device with a screen. The electronic device includes but is not limited to a mobile phone, a tablet computer, an electronic watch, etc.

[0074] The way of adjusting the electronic device to a specified screen brightness and a specified picture is not limited in the embodiments of the present application, and can be directly operated by a user or sent by the screen detection device.

[0075] The screen detection device provided in the embodiments of the present application can realize quantifiable and automatic screen flicker test on the production line. The display screen of the electronic device can be tested on the production line, so as to ensure the consistency of the screen flicker performance of the electronic device flowing into the market, guarantee the product quality, and avoid the problems of strong subjectivity, poor accuracy and low efficiency of manual detection.

[0076] The way of arranging the photodetector in the detection cavity and connecting the photodetector with the cabinet is not limited in the embodiments of the present application. The photodetector can be installed on a structure owned by the cabinet or indirectly connected with the cabinet through other structures.

[0077] In some embodiments, as shown in FIG. 4, the screen detection device further includes a probe support 04. The probe support 04 is arranged in the detection cavity and connected with the cabinet. The probe support 04 is used for installing the photodetector 02. The photodetector 02 can be indirectly connected with the cabinet through the probe support 04. The probe support 04 is further provided with a mounting hole 043. A part of the photodetector 02 penetrates through the mounting hole 043 and is connected with the probe support 04 through the mounting hole 043. In this way, the probe support 04 can fix the photodetector 02 in the detection cavity and provide a supporting action for the photodetector 02. The photodetector 02 is more convenient to disassemble and maintain through the probe support 04. The photodetector at least the light-in side penetrates through the mounting hole, which is convenient for the photodetector to collect the light signal.

[0078] The form of the probe support is not limited in the embodiments of the present application. The probe support can be an adjustable support or a fixed support. When the probe support is an adjustable support, the position of the photodetector can be adjusted through the probe support. When the probe support is a fixed support, the position of the photodetector can be fixed, and the light signal collected by the photodetector is controlled to come from the same area of different screens. The following is for the convenience of description, and the probe support is described as a fixed support.

[0079] The material of the probe support is not limited in the embodiments of the present application. The material of the probe support can be light-proof plastic or other materials that have light-shielding effect and do not interfere with the work of the display screen.

[0080] As known from the above, the probe support can fix the photodetector, and the structure of the probe support is exemplarily described below.

[0081] In a possible implementation, as shown in FIG. 5, the probe support 04 includes a support plate 041 and a light-shielding plate 042. A mounting hole 043 is formed on the support plate 041. The support plate 041 is connected with the cabinet 01 in FIG. 1 and the photodetector 02 in FIG. 2. The light-shielding plate 042 is located on the side of the support plate 041 and connected with the support plate 041. The light-shielding plate 042 extends along the side where the light-in side 020 of the photodetector 02 is located (i.e., extends in the opposite direction of the z direction in FIG. 5). In this way, the support plate 041 can fix the photodetector 02 in the detection cavity 011, and the light-shielding plate 042 can block the light signal outside the display screen 031, so as to ensure that the light signal collected by the photodetector 02 is more accurate.

[0082] The shape of the support plate is not limited in the embodiments of the present application. For example, the plate surface of the support plate can be circular, rectangular or irregular. When the plate surface of the support plate is rectangular, the plate surface shape of the support plate is the same as the contour shape of the electronic device (for example, rectangular). When the probe support includes a light-shielding plate, the rectangular support plate cooperates with the light-shielding plate to adapt to the contour of the electronic device, and better realize the light-shielding effect.

[0083] The number of the light-shielding plate is not limited in the embodiments of the present application. For the convenience of description, as shown in FIG. 5, the number of the light-shielding plate 042 is two. The two light-shielding plates 042 are parallel to the x direction shown in FIG. 1, and can block the light from outside the detection cavity 011.

[0084] In a possible implementation, as shown in FIG. 6, the plate surface of the support plate 041 is rectangular. Five mounting holes are formed on the probe holder 04, which are four first mounting holes 0431 and one second mounting hole 0432. The vertical projections of the four first mounting holes 0431 on the plate surface of the support plate 041 are located at the four corners of the rectangle respectively. The four first mounting holes 0431 are arranged around the periphery of the second mounting hole 0432. In this way, the five mounting holes can be used to mount five photoelectric detectors to collect the light signals of the display screen.

[0085] It can be understood that the light signal distribution of the central region of the display screen of the electronic device is more uniform. One second mounting hole can collect the light signals of the central region of the display screen, and the four first mounting holes can collect the light signals of the four corners of the rectangular display screen. Using only the photoelectric detector on the second mounting hole to collect the light signals of the central region of the display screen can save costs. Using the five photoelectric detectors to collect the light signals of the five regions of the display screen and comprehensively processing the collected results can obtain more reliable data, which is particularly suitable for the case that the display screen is relatively large.

[0086] The number of mounting holes is not limited in the embodiments of the present application. Optionally, the number of mounting holes is one or five.

[0087] The way in which the electronic device is arranged in the detection cavity is not limited in the embodiments of the present application. The electronic device can be mounted on the structure of the cabinet, for example, an installation groove is directly formed on the bottom of the detection cavity, and the installation groove is used to accommodate the electronic device. The electronic device can also be indirectly connected to the cabinet through other structures, for example, the electronic device is mounted on the cabinet clamp, and the cabinet clamp is connected to the cabinet.

[0088] In some embodiments, as shown in FIG. 7, the screen detection device further includes a cabinet clamp 05. The cabinet clamp 05 is arranged in the detection cavity and located on the light entrance side 020 of the photoelectric detector 02. A recess 051 for accommodating the electronic device 03 is formed on the cabinet clamp 05. The cabinet clamp 05 is used to connect the electronic device 03. In this way, the recess 051 can be used to position the electronic device 03, so that each electronic device 03 to be detected is in the same position in the detection state, thereby better ensuring the consistency of the detection environment of all electronic devices 03.

[0089] In a possible implementation, as shown in FIG. 8, the cabinet clamp 05 is provided with a recess 051 for accommodating the electronic device. The recess 051 accommodates the electronic device through clamping. The size of the recess 051 is matched with the size of the electronic device. This is suitable for the scene of detecting electronic devices with the same screen size on the production line.

[0090] In another possible implementation, as shown in FIGS. 9A and 9B, the cabinet clamp 05 is divided into four detachable parts: a first part 05A, a second part 05B, a third part 05C, and a fourth part 05D. The first part 05A, the second part 05B, the third part 05C, and the fourth part 05D enclose a recess 051 for accommodating the electronic device. The size of the recess 051 can be changed by adjusting the gaps m and n between the four parts. This is suitable for scenarios where the electronic devices have different screen sizes. For example, the first part 05A, the second part 05B, the third part 05C, and the fourth part 05D can be fixed on the four claws of a four-claw chuck. The movement of the four-claw chuck can drive the movement of the four parts of the clamp, thereby changing the gaps m and n.

[0091] The embodiments of the present application do not limit the arrangement of the detection cavity in the cabinet. The detection cavity can be a cavity that penetrates the cabinet, or a cavity that is only open on one side of the cabinet.

[0092] In some embodiments, as shown in FIG. 10, the cabinet 01 is provided with a slide 013 that is in communication with the detection cavity 011. The slide 013 is located on the light-incident side of the photodetector 02. As shown in FIG. 11, the screen detection device further includes a pulling structure 012. A part of the pulling structure 012 extends into the slide 013 and is in sliding or rolling connection with the cabinet 01. The cabinet clamp 05 is arranged on the part of the pulling structure 012 located in the slide. The part of the pulling structure located in the slide can move relative to the slide and move out of the detection cavity. Through the movement of the part of the pulling structure located in the slide, the cabinet clamp fixed on the part of the pulling structure located in the slide can be driven to move. In response to user operation, the cabinet clamp 05 can be sent out of the detection cavity by the pulling structure 012, facilitating the fixation of the electronic device to be tested on the cabinet clamp 05. At this time, the detection cavity 011 can be a cavity that is only open on one side of the cabinet 01.

[0093] It can be understood that the pulling structure can be replaced by a structure having the same function. For example, in some embodiments, the cabinet is provided with a slide that is in communication with the detection cavity. The slide is located on the light-incident side of the photodetector. The screen detection device further includes a conveyor belt. The cabinet clamp is arranged on the conveyor belt. In response to user operation, the cabinet clamp can be sent out of or into the detection cavity by the conveyor belt. At this time, the detection cavity can be a cavity that penetrates the cabinet.

[0094] The embodiments of the present application do not limit the number of photodetectors and cabinet clamps in the screen detection device. When the photodetectors and cabinet clamps are multiple, the screen detection device can simultaneously detect the display screens of multiple electronic devices. It can be understood that one cabinet clamp corresponds to at least one electronic device, and one electronic device corresponds to at least one photodetector.

[0095] In some embodiments, as shown in FIG. 12A, the screen detection device comprises at least two photodetectors 02 and at least two cabinet clamps 05, which are arranged on the pull-out structure (not shown in FIG. 12A). As shown in FIG. 12B, the vertical projection of one photodetector 02 in FIG. 12A on the part of the pull-out structure 012 located in the slide is within the range of the vertical projection of the corresponding one cabinet clamp 05 on the part of the pull-out structure 012 located in the slide. In this way, when the electronic device to be tested is fixed on the cabinet clamp 05 and located in the detection cavity 011, it can be ensured that the photodetector 02 is directly opposite the display screen.

[0096] In some embodiments, as shown in FIG. 13A, the probe holder 04 comprises a support plate 041, which is provided with mounting holes 043. The support plate 041 is connected with the cabinet 01 and the photodetector 02. The cabinet clamp 05 is arranged on the pull-out structure (not shown in FIG. 13A). As shown in FIG. 13B, the vertical projection of the support plate 041 in FIG. 13A on the part of the pull-out structure located in the slide completely covers the vertical projection of the groove on the part of the pull-out structure located in the slide. In this way, when the electronic device to be tested is fixed on the cabinet clamp and located in the detection cavity, the support plate of the probe holder completely covers the display screen, which can ensure the light shielding effect of the probe holder.

[0097] In some embodiments, as shown in FIG. 14, the screen detection device further comprises an oscilloscope 061 and a processor 062. The oscilloscope 061 and the processor 062 are arranged in the cabinet 01. The oscilloscope 061 is electrically connected with the output end of the photodetector 02. The processor 062 is electrically connected with the oscilloscope 061 and the electronic device 03. The oscilloscope 061 is electrically connected with the photodetector 02, and the oscilloscope 061 can further process the electrical signal output by the photodetector 02. The oscilloscope 061 can convert the analog signal output by the photodetector 02 into a digital signal, which provides a data basis for subsequent calculation of the measurement value of the screen flicker of the electronic device 03. The oscilloscope 061 can also perform noise processing and bandwidth limitation on the signal output by the photodetector 02. The processor 062 is electrically connected with the oscilloscope 061, and the processor 062 can further process the electrical signal output by the oscilloscope 061. The processor can calculate the measurement value of the screen flicker of the electronic device by using the digital signal output by the oscilloscope, judge whether the measurement value of the screen flicker is within the specification requirement, and then give the test conclusion of the screen flicker of the electronic device.

[0098] In a possible implementation, as shown in FIG. 14, the oscilloscope 061 comprises a first operation panel 0611, and the processor 062 comprises a second operation panel 0621. The first operation panel 0611 and the second operation panel 0621 are located on the surface of the cabinet 01. A user can set parameters of the screen detection apparatus, such as a specification of a measured value of screen flicker, through the first operation panel 0611 and the second operation panel 0621. The user can observe a screen flicker test conclusion of the electronic device through a first display and a second display on the first operation panel 0611 and the second operation panel 0621.

[0099] It can be understood that the oscilloscope and the processor can be arranged independently of the cabinet.

[0100] In a possible implementation, the oscilloscope and the processor can realize functions through a circuit structure. As shown in FIG. 15, the processor 062 comprises a waveform conversion circuit, a calculation circuit, a comparison circuit, and an output circuit. The waveform conversion circuit is electrically connected with the oscilloscope 061. The waveform conversion circuit is configured to convert a time-domain luminance waveform output by the oscilloscope 061 into a frequency-domain waveform. The calculation circuit is electrically connected with the waveform conversion circuit. The calculation circuit is configured to perform normalization processing on data of the frequency-domain waveform to obtain a quantized flicker feature value. The comparison circuit is electrically connected with the calculation circuit and the waveform conversion circuit. The comparison circuit is configured to determine whether the quantized flicker feature value output by the calculation circuit is located within a first threshold range. The comparison circuit is further configured to determine whether the frequency-domain feature value output by the waveform conversion circuit is located within a second threshold range. The output circuit is electrically connected with the comparison circuit. The output circuit is configured to output a determination result of the comparison circuit.

[0101] In a possible implementation, the oscilloscope and the processor can be two independent devices and each have a display. The oscilloscope is electrically connected with an output end of the photodetector. The processor is electrically connected with the oscilloscope and the electronic device. The oscilloscope receives the second electric signal output by the photodetector, performs analog-to-digital conversion, noise processing, and bandwidth limitation, and outputs a third electric signal. The independent oscilloscope can more intuitively display waveform information, which is helpful for analyzing parameters such as amplitude, frequency, and time of a signal. The processor receives the third electric signal output by the oscilloscope, calculates a measured value of screen flicker of the electronic device based on the third electric signal, determines whether the measured value of screen flicker is within a specification requirement, and further gives a screen flicker test conclusion of the electronic device.

[0102] In a possible implementation, the oscilloscope and the processor can be integrated in one processing device. The oscilloscope and the processor are two modules in the device and realize signal transmission through a system bus. The processing device can be a single-chip microcomputer, a server, a personal computer, or the like.

[0103] FIG. 16 is a structural schematic diagram of a photoelectric detector 02 provided by an embodiment of the present application. The photoelectric detector 02 can be applied to various spectral detection scenarios. An embodiment of the present application takes the photoelectric detector 02 as an example for use in a screen detection device. The photoelectric detector 02 comprises a first circuit board 021, a second circuit board 022, a power supply interface 0211, a signal output interface 0221, a signal processing component (not shown in FIG. 16), and a photoelectric sensor 023.

[0104] The first circuit board 021 and the second circuit board 022 are stacked and electrically connected. The power supply interface 0211 is arranged on the first circuit board 021 and electrically connected to the first circuit board 021. The power supply interface is used to connect an external power supply to supply power to the photoelectric detector. Therefore, the first circuit board can be referred to as a power supply board. The signal output interface 0221 is arranged on the second circuit board 022 and electrically connected to the second circuit board 022. The signal output interface is used to output an electrical signal collected and processed by the photoelectric detector. Therefore, the second circuit board can be referred to as a signal board. The signal processing component is arranged on the second circuit board 022 and electrically connected to the power supply interface 0211 through the second circuit board 022 and the first circuit board 021. The photoelectric sensor 023 is arranged on the second circuit board 022. An incident light surface 0231 of the photoelectric sensor 023 serves as an incident light side of the photoelectric detector 02 and is arranged away from the second circuit board 022. The signal processing component is connected between the photoelectric sensor 023 and the signal output interface 0221.

[0105] In this way, as shown in FIG. 17, the photoelectric sensor 023 is used to collect a light signal on the display screen 031 and convert the light signal into a first electrical signal. The signal processing component on the second circuit board 022 receives the first electrical signal output by the photoelectric sensor 023, processes the first electrical signal, and outputs a second electrical signal. Optionally, the signal processing component amplifies and filters the first electrical signal and / or performs impedance matching. The second circuit board 022 outputs the second electrical signal to the processing device 06 of the screen detection device through the signal output interface. The first circuit board 021 connects an external power supply through the power supply interface to supply power to the signal processing component on the second circuit board 022.

[0106] In a possible implementation, as shown in FIG. 18, the first circuit board 021 comprises a boost power supply module. The boost power supply module is electrically connected to the second circuit board 022. The boost power supply module can increase the voltage input to the second circuit board 022, thereby making the system smaller and lighter while maintaining the same power output, thereby improving the power density of the system.

[0107] In a possible implementation, the boost power supply module adopts a thin pasting device, which is conducive to the miniaturization design of the photoelectric detector.

[0108] In some embodiments, as shown in FIG. 16, the power supply interface 0211 is a type-C interface or a USB interface. In this way, the photodetector 02 uses a universal interface for external power supply, which can improve the maintainability of the photodetector and make it more convenient for users to use.

[0109] In some embodiments, as shown in FIG. 16, the power supply interface 0211 is arranged on the side of the first circuit board 021 away from the second circuit board 022. The second circuit board 022 has a first surface 022A facing the first circuit board 021 and a second surface 022B away from the first circuit board 021. The signal output interface 0221 is located on the first surface 022A. The photoelectric sensor 023 and the signal processing component (not shown in FIG. 16) are located on the second surface 022B. In this way, the functional structures of the second circuit board 022 and the first circuit board 021 are arranged on the two surfaces away from each other, which is more convenient for the stacking of the second circuit board 022 and the first circuit board 021, and is conducive to the miniaturization design of the photodetector.

[0110] In a possible implementation, the signal processing component is a thin component, which is conducive to the miniaturization design of the photodetector.

[0111] In some embodiments, as shown in FIG. 19, the photodetector further comprises a second connecting member 029. The first circuit board 021 and the second circuit board 022 have second connecting holes 0291 adapted in position, and the second connecting member 029 penetrates the first circuit board 021 and the second circuit board 022 through the second connecting holes 0291.

[0112] In this way, the second connecting member can fix the first circuit board and the second circuit board, and assist the stacking of the first circuit board and the second circuit board.

[0113] In some embodiments, as shown in FIG. 20, the photodetector 02 further comprises a housing 024 and a cover 025. The housing 024 has a mounting groove. The cover 025 is arranged at the opening of the mounting groove and surrounds the mounting groove to form a containing cavity 0241. The first circuit board 021, the second circuit board 022, and the signal processing component (not shown in FIG. 20) are located in the containing cavity 0241. At least a part of the power supply interface 0211 is located in the containing cavity 0241. At least a part of the signal output interface 0221 is located in the containing cavity 0241. A part of the photoelectric sensor 023 is located in the containing cavity, and the light entrance surface 0231 of the photoelectric sensor 023 is located outside the housing 024.

[0114] In this way, the shell and the cover are arranged outside the functional device of the photodetector, and can prevent water and moisture from affecting the functional device. One part of the power supply interface is located in the accommodating cavity, and the other part penetrates the shell and can be connected with an external power supply. One part of the signal output interface is located in the accommodating cavity, and the other part penetrates the shell and can be connected with a processing device of the screen detection apparatus. One part of the photoelectric sensor is located in the accommodating cavity, and the light entrance surface is located outside the shell and can more conveniently collect light signals.

[0115] It can be understood that the power supply interface, the signal output interface and the photoelectric sensor are exposed outside the accommodating cavity through the apertures on the shell and the cover. The position of the aperture is not limited in the embodiments of the present application. The aperture can be located on the shell, the cover, or part of the aperture is located on the shell and the other part is located on the cover.

[0116] For example, as shown in FIG. 20, the shell 024 includes a first aperture 0242, and the power supply interface 0211 is exposed in the first aperture 0242 and can be connected with an external power supply.

[0117] For example, as shown in FIG. 20, the shell 024 and the cover 025 include a second aperture 0243, and the signal output interface 0221 is exposed in the second aperture 0243 and can be connected with a processing device of the screen detection apparatus.

[0118] For example, as shown in FIG. 20, the shell 024 includes a third aperture 0244, and the light entrance surface 0231 of the photoelectric sensor 023 is exposed in the third aperture 0244 and can more conveniently collect light signals emitted by the display screen.

[0119] It can be understood that the position of the first aperture is matched with the position of the power supply interface. The position of the second aperture is matched with the position of the signal output interface. The position of the third aperture is matched with the position of the photoelectric sensor.

[0120] In some embodiments, as shown in FIG. 21, the cover 025 is provided with an adjusting hole 0251. The photodetector 02 includes at least two signal processing components, which are a filter amplifier and an impedance matching device respectively. As shown in FIG. 18, the filter amplifier is electrically connected between the photoelectric sensor 023 and the impedance matching device. The impedance matching device is also electrically connected with the signal output interface. As shown in FIG. 21, the screen detection apparatus further includes an impedance adjusting knob 0223 for adjusting the impedance matching value of the impedance matching device. The impedance adjusting knob 0223 is arranged on the second circuit board 022 and is electrically connected with the impedance matching device. The impedance adjusting knob 0223 penetrates the first circuit board 021 and is exposed in the adjusting hole 0251.

[0121] In this way, the impedance matching of the photodetector can be adjusted through the impedance matching adjusting knob, so that the photodetector can be compatible with various oscilloscope devices.

[0122] In a possible implementation, as shown in FIG. 22, the filter amplifier and the impedance matching device can be implemented by a circuit structure. The circuit input end is the photoelectric sensor 023. The filter amplifier function can be realized by adjusting the size of the output voltage of the photoelectric sensor 023 through the resistor R1 and the first operational amplifier A1. The load of the circuit output end is the processing device 06. The processing device 06 includes an oscilloscope and a processor. The second operational amplifier A2 constitutes a voltage follower, and the impedance matching function can be realized, so that the photoelectric sensor can be adapted to various types of processing devices 06.

[0123] In a possible implementation, the filter amplifier and the impedance matching device are integrated in a signal processing component. The signal processing component is an integrated circuit chip. The second circuit board has a first surface facing the first circuit board and a second surface away from the first circuit board. The signal processing component is arranged on the second surface. The impedance adjustment knob is arranged on the first surface of the second circuit board. The through hole penetrates the first circuit board and is exposed to the adjustment hole.

[0124] In a possible implementation, the filter amplifier and the impedance matching device are both thin surface mount devices, which are beneficial to the miniaturization design of the photoelectric detector.

[0125] In some embodiments, as shown in FIG. 23, the cover 025 is provided with a light-transmitting hole 0252. The photoelectric detector further includes a lamp bead 0212 arranged on the first circuit board 021 and electrically connected with the first circuit board 021 and the power supply interface 0211. Part of the lamp bead 0212 is exposed to the light-transmitting hole 0252. In this way, whether the photoelectric detector is normally powered can be judged by the lamp bead.

[0126] In some embodiments, as shown in FIG. 24, part of the signal output interface 0221 and at least part of the power supply interface 0211 are arranged in a stacked manner on the side of the first circuit board 021 away from the second circuit board 022. The side of the signal output interface 0221 away from the second circuit board 022 has a first spacing H1 with the cover 025. The side of the power supply interface 0211 away from the second circuit board 022 has a second spacing H2 with the cover 025. The photoelectric detector further includes at least one support column 027 located in the accommodating cavity. One end of the support column 027 abuts against the second circuit board 022, and the other end of the support column 027 is connected with the cover 025. The height of the support column is H3. It can be understood that, after the photoelectric detector is installed, H3>H1 and H3>H2.

[0127] The number of the support columns is not limited in the embodiments of the present application. For example, as shown in FIG. 24, the number of the support columns 027 is four.

[0128] In some embodiments, as shown in FIG. 25, the photodetector 02 further comprises a first connecting member 028. The cover 025, the support column 027, the second circuit board 022 and the shell 024 are provided with a first connecting hole 0281 which is matched in position. The first connecting member 028 is connected with the shell 024 by penetrating through the cover 025, the support column 027 and the second circuit board 022 through the first connecting hole 0281. In this way, the photodetector can be fixed and installed by only one connecting structure of the first connecting member, which is conducive to the miniaturization design of the photodetector.

[0129] In a possible implementation, the first connecting member can be a screw. The screw penetrates through the cover, the support column, the second circuit board and is connected with the shell to fix the entire photodetector.

[0130] In a possible implementation, the photodetector comprises four first connecting members. The four first connecting members can more stably fix the photodetector.

[0131] In some embodiments, as shown in FIG. 20, the photodetector 02 further comprises a protective cover 026. The protective cover 026 is arranged on the side of the photosensor 023 away from the shell 024. The protective cover 026 is connected with the shell 024. The protective cover 026 is provided with a second light-transmitting hole 0261 which exposes the light-receiving surface 0231. In this way, the protective cover 026 can protect the light-receiving surface 0231 of the photosensor 023 which is located outside the shell 024.

[0132] In a possible implementation, as shown in FIG. 20, the height of the protective cover 026 is X1 and the height of the photosensor 023 is X2. X1>X2. Optionally, X1>X2 and the difference between X1 and X2 is 5 mm. In this way, when collecting the light signal, the photosensor will not directly contact the display screen, and the photosensor and the display screen can be prevented from being damaged.

[0133] In a possible implementation, the material of the protective cover is light-proof plastic.

[0134] In a possible implementation, the material of the protective cover is metal. In the working state, the protective cover is wrapped with a layer of plastic to avoid interference of the metal protective cover on the display screen.

[0135] In the description of the present specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0136] The detection method of the electronic device screen flicker is exemplarily described below in combination with the structure of the screen detection device and the photosensor. As shown in FIG. 26, the detection method of the electronic device screen flicker comprises S101-S108.

[0137] S101, send the electronic device to be tested into the cabinet clamp.

[0138] Specifically, as shown in FIG. 11, pull out the pull structure 012 from the cabinet 01, and drive the cabinet clamp 05 to also come out of the cabinet. After electrically connecting the electronic device and the processor, fix it in the cabinet clamp. Push the pull structure 012 into the cabinet 01, drive the cabinet clamp 05 and the electronic device into the detection cavity.

[0139] S102, send the first instruction to the electronic device, and the electronic device switches to the specified screen.

[0140] Specifically, as shown in FIG. 14, the electronic device 03 and the processor 062 are electrically connected. The electronic device 03 is stable in the detection cavity of the cabinet 01. The processor 062 sends the first instruction to the electronic device 03. The electronic device 03 switches to the specified screen.

[0141] For example, the processor sends the first ADB instruction to the electronic device, and the electronic device switches to the W255 screen.

[0142] S103, send the second instruction to the electronic device, and the electronic device adjusts to the specified brightness.

[0143] Specifically, as shown in FIG. 14, the electronic device 03 and the processor 062 are electrically connected. The electronic device 03 has been adjusted to the specified screen. The processor 062 sends the second instruction to the electronic device 03. The electronic device 03 adjusts to the specified brightness.

[0144] For example, the processor sends the second ADB to the electronic device, and the electronic device adjusts to the specified brightness.

[0145] S104, collect the one-second display screen brightness waveform. Specifically, as shown in FIG. 17 and FIG. 18, the photoelectric sensor 023 collects the brightness waveform emitted by the display screen 031 in one second, converts the brightness waveform into a first electric signal, and outputs the first electric signal to the filtering and amplification module of the second circuit board 022. The filtering and amplification module of the second circuit board 022 filters and amplifies the first electric signal and outputs it to the impedance matching module. The impedance matching module of the second circuit board 022 performs impedance matching processing on the first electric signal and outputs it to the processing device 06 through the signal interface.

[0146] S105, convert the time domain of the brightness waveform to the frequency domain.

[0147] Specifically, as shown in FIG. 14, the processing device includes an oscilloscope 061 and a processor 062, and the oscilloscope 061 and the photoelectric sensor 02 are electrically connected. The oscilloscope 061 can perform noise processing and bandwidth limitation on the second electrical signal output by the photoelectric sensor 02. As shown in FIG. 15, the processor 062 and the oscilloscope 061 are electrically connected. The processor 062 includes a waveform conversion circuit. The processor 062 can convert the second electrical signal processed by the oscilloscope 061 from an analog signal to a digital signal.

[0148] For example, the waveform conversion circuit can convert the analog signal to the digital signal by using fast Fourier transform.

[0149] S106, calculating a quantitative flicker feature value.

[0150] Specifically, as shown in FIG. 15, the processor 062 includes a calculation circuit. The calculation circuit can calculate the quantitative flicker feature value of the screen flicker of the electronic device by using the digital signal output by the waveform conversion circuit.

[0151] For example, the quantitative flicker feature value can be a frequency domain feature value and / or an SVM value. The frequency domain feature value can represent the flicker frequency of the screen. The SVM value can represent the human eye irritation index.

[0152] S107, judging whether the quantitative flicker feature value meets the specification requirement.

[0153] Specifically, as shown in FIG. 15, the processor 062 includes a comparison circuit. The comparison circuit can judge whether the quantitative flicker feature value of the screen flicker of the electronic device meets the specification requirement by using the quantitative flicker feature value output by the calculation circuit.

[0154] S108, uploading a screen flicker test conclusion.

[0155] Specifically, as shown in FIG. 15, the processor 062 includes an output circuit. The output circuit can be configured to communicate by using a communication protocol, and upload the judgment result output by the comparison circuit to a production line system. For example, the screen detection device communicates with the production line system through a network. The output circuit is configured to communicate by using a wireless local area network (WLAN) protocol.

[0156] For example, the screen detection device communicates with the production line system through a universal serial bus (USB) interface. The output circuit is configured to communicate by using a USB protocol.

[0157] It can be understood that the oscilloscope and the processor in S105 to S108 can be separate devices or circuit structures. When the oscilloscope and the processor are implemented by the circuit structure, they can be integrated in the processing device for sending the first instruction and the second instruction or integrated in the photosensor. In this way, the execution subject of the steps in FIG. 26 changes, but all are within the protection scope of the embodiments of the present application.

[0158] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any change or replacement within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A screen detection apparatus, characterized by comprising: The screen detection device is used for detecting a display screen of an electronic device, and comprises: a cabinet, a detection cavity is arranged in the cabinet, and the detection cavity is used for accommodating the electronic device; a photoelectric detector, which is arranged in the detection cavity and connected with the cabinet; an incident light side of the photoelectric detector faces the display screen; the photoelectric detector is used for collecting screen brightness of the display screen and performing photoelectric conversion.

2. The screen detection apparatus according to claim 1, characterized by The screen detection device further comprises: a probe support, which is arranged in the detection cavity and connected with the cabinet; a mounting hole is arranged on the probe support; a part of the photoelectric detector penetrates through the mounting hole, and the photoelectric detector is connected with the probe support.

3. The screen detection apparatus according to claim 2, characterized by The probe support comprises: a support plate, the mounting hole is arranged on the support plate; the support plate is connected with the cabinet and the photoelectric detector; a light shielding plate, which is located on a side of the support plate and connected with the support plate; the light shielding plate extends along a side where the incident light side of the photoelectric detector is located.

4. The screen detection device according to claim 3, wherein a plate surface of the support plate is rectangular; five mounting holes are arranged on the probe support, which are four first mounting holes and one second mounting hole; vertical projections of the four first mounting holes on the plate surface of the support plate are located at four corners of the rectangle respectively; the four first mounting holes are arranged around the second mounting hole.

5. The screen detection apparatus according to any one of claims 1 to 4, characterized by The screen detection device further comprises: a cabinet clamp, which is arranged in the detection cavity and located on the incident light side of the photoelectric detector; a groove for accommodating the electronic device is arranged on the cabinet clamp, and the cabinet clamp is used for being connected with the electronic device.

6. The screen detection device according to claim 5, wherein a slide is arranged on the cabinet and communicated with the detection cavity; the slide is located on the incident light side of the photoelectric detector; The screen detection device further comprises: a pulling structure, which is partially inserted into the slide and connected with the cabinet in sliding or rolling mode; the cabinet clamp is arranged on the part of the pulling structure which is located in the slide.

7. The screen detection apparatus according to claim 6, characterized by The screen detection device comprises at least two photoelectric detectors and at least two cabinet clamps; a vertical projection of one photoelectric detector on the part of the pulling structure which is located in the slide is located in a range of a vertical projection of a groove of one cabinet clamp on the part of the pulling structure which is located in the slide.

8. The screen detection device according to claim 6 or 7, wherein the probe support comprises a support plate, the mounting hole is arranged on the support plate; the support plate is connected with the cabinet and the photoelectric detector; a vertical projection of the support plate on the part of the pulling structure which is located in the slide completely covers a vertical projection of the groove on the part of the pulling structure which is located in the slide.

9. The screen detection apparatus according to any one of claims 1 to 8, characterized by, The screen detection device further comprises: an oscilloscope, which is arranged in the cabinet and electrically connected with an output end of the photoelectric detector; a processor, which is arranged in the cabinet and electrically connected with the oscilloscope and the electronic device.

10. The screen detection apparatus according to any one of claims 1 to 9, characterized by The photoelectric detector comprises: A first circuit board; A power supply interface arranged on the first circuit board and electrically connected with the first circuit board; A second circuit board arranged in a stack with the first circuit board and electrically connected with the first circuit board; A signal output interface arranged on the second circuit board and electrically connected with the second circuit board; A signal processing component arranged on the second circuit board and electrically connected with the power supply interface through the second circuit board and the first circuit board; A photoelectric sensor arranged on the second circuit board, an incident light surface of the photoelectric sensor serving as an incident light side of the photoelectric detector, the incident light surface being arranged away from the second circuit board; the signal processing component being connected between the photoelectric sensor and the signal output interface.

11. The screen detection device according to claim 10, wherein: the power supply interface is arranged on a side of the first circuit board away from the second circuit board; the second circuit board has a first surface facing the first circuit board and a second surface away from the first circuit board; the signal output interface is located on the first surface; the photoelectric sensor and the signal processing component are located on the second surface.

12. The screen detection apparatus according to claim 10 or 11, characterized by The photoelectric detector further comprises: a housing having a mounting groove; a cover arranged at an opening of the mounting groove and surrounding the mounting groove to form a receiving cavity; wherein the first circuit board, the second circuit board, the signal processing component are located in the receiving cavity; at least a part of the power supply interface is located in the receiving cavity; at least a part of the signal output interface is located in the receiving cavity; a part of the photoelectric sensor is located in the receiving cavity, and the incident light surface of the photoelectric sensor is located outside the housing.

13. The screen detection apparatus according to claim 12, characterized by An adjusting hole is formed in the cover; The photoelectric detector comprises at least two signal processing components, which are a filter amplifier and an impedance matching component respectively; the filter amplifier is electrically connected between the photoelectric sensor and the impedance matching component; the impedance matching component is also electrically connected with the signal output interface; The screen detection device further comprises an impedance adjusting knob arranged on the second circuit board and electrically connected with the impedance matching component, the impedance adjusting knob being used to adjust the impedance matching value of the impedance matching component; the impedance adjusting knob penetrates through the first circuit board and is exposed in the adjusting hole.

14. The screen detection apparatus according to claim 12 or 13, characterized by A first light transmission hole is formed in the cover; The photoelectric detector further comprises a lamp bead arranged on the first circuit board and electrically connected with the first circuit board and the power supply interface; a part of the lamp bead is exposed in the first light transmission hole.

15. The screen detection device according to any one of claims 12-14, wherein: a part of the signal output interface and at least a part of the power supply interface are arranged in a stack on a side of the first circuit board away from the second circuit board; a side of the signal output interface away from the second circuit board has a first spacing H1 with the cover; a side of the power supply interface away from the second circuit board has a second spacing H2 with the cover; The photoelectric detector further comprises at least one support column located in the accommodating cavity; one end of the support column abuts against the second circuit board, and the other end of the support column is connected with the cover body; the height of the support column is H3; Wherein, H3>H1; H3>H2.

16. The screen detection apparatus of any of claims 10-15, wherein, The power supply interface is a type-C interface or a USB interface.

17. The screen detection apparatus of claim 16, wherein, The photoelectric detector further comprises: A first connecting member penetrating through the cover body, the support column, the second circuit board, and connected with the shell.

18. The screen detection apparatus according to claim 16 or 17, characterized by The photoelectric detector further comprises: A second connecting member penetrating through the first circuit board and the second circuit board.

19. The screen detection apparatus of any of claims 10-18, wherein, The photoelectric detector further comprises: A protective cover covering the side of the photoelectric sensor away from the shell, the protective cover being connected with the shell; a second light-transmitting hole is formed in the protective cover, and the second light-transmitting hole exposes the light-incident surface.

20. A photodetector, comprising: The photoelectric detector comprises: A first circuit board; A power supply interface arranged on the first circuit board and electrically connected with the first circuit board; A second circuit board arranged in layers with the first circuit board and electrically connected with the first circuit board; A signal output interface arranged on the second circuit board and electrically connected with the second circuit board; A signal processing component arranged on the second circuit board and electrically connected with the power supply interface through the second circuit board and the first circuit board; A photoelectric sensor arranged on the second circuit board, the light-incident surface of the photoelectric sensor serving as the light-incident side of the photoelectric detector, the light-incident surface being arranged away from the second circuit board; the signal processing component is connected between the photoelectric sensor and the signal output interface.

21. The photoelectric detector according to claim 20, wherein: The power supply structure is arranged on the side of the first circuit board away from the second circuit board; The second circuit board has a first surface facing the first circuit board and a second surface away from the first circuit board; the signal output interface and the signal processing component are located on the first surface; and the photoelectric sensor is located on the second surface.

Images