Screen testing method, screen testing system and related device

Abstract

The invention provides a screen testing method, a screen testing system and a related device, which are applied to the technical field of terminals. The method is applied to a test system comprising an electric field applying device and a to-be-tested screen, the electric field applying device comprises a first conductor and a second conductor which are oppositely arranged, and under the condition that the to-be-tested screen is arranged in an electric field between the first conductor and the second conductor, charges are conducted from the surface of the to-be-tested screen to the interior of the to-be-tested screen; the method comprises the following steps: acquiring first data and second data; the first data are data presented by the to-be-tested screen under the condition that the first image is sent to the to-be-tested screen and the to-be-tested screen is not applied by the electric field of the electric field applying device; the second data are data presented by the to-be-tested screen after the first image is sent and displayed to the to-be-tested screen and the to-be-tested screen is subjected to the electric field for a first duration; and obtaining a first test result of the to-be-tested screen according to the difference between the first data and the second data. Therefore, the test accuracy can be improved.

Description

Technical Field

[0001] The present application relates to the field of terminal technology, and in particular to a screen testing method, a screen testing system and related devices. Background Art

[0002] The screen of the electronic device may be an organic light emitting diode (OLED) screen. Currently, the OLED screen of the electronic device may have abnormal phenomena such as screen flickering or green screen, which affects the user experience. Summary of the invention

[0003] The present application provides a screen testing method, a screen testing system and related devices, which are applied in the field of terminal technology. In the present application, it is helpful to improve the accuracy of screen testing.

[0004] In the first aspect, the present application proposes a screen testing method, which can be applied to a test system including an electric field applying device and a screen to be tested, wherein the electric field applying device includes a first conductor and a second conductor arranged opposite to each other, and when the first conductor and the second conductor are energized respectively, an electric field is formed between the first conductor and the second conductor, and when the screen to be tested is set in the electric field between the first conductor and the second conductor, the charge is conducted from the surface of the screen to be tested to the inside of the screen to be tested; the screen testing method includes: obtaining first data and second data; the first data is the data presented by the screen to be tested when a first image is displayed on the screen to be tested and the screen to be tested has not been subjected to the electric field applied by the electric field applying device; the second data is the data presented by the screen to be tested when a first image is displayed on the screen to be tested and the screen to be tested is subjected to the electric field applied for a first time; and according to the difference between the first data and the second data, a first test result of the screen to be tested is obtained. In this way, the screen to be tested is placed in the electric field, and within the first time, the electric field can control the charge to be conducted from the surface of the screen to be tested to the inside of the screen to be tested, which is conducive to testing the influence of the charge on the screen to be tested and improving the test accuracy.

[0005] In a possible implementation, the first conductor contacts the surface of the screen to be tested, and the contact area between the first conductor and the screen to be tested is smaller than the surface area of ​​the screen to be tested; the second conductor contacts the back of the screen to be tested and is used to support the screen to be tested. In this way, the first conductor contacts the surface of the screen to be tested, which is conducive to quickly gathering charges on the screen surface, and the contact area between the first conductor and the screen to be tested is smaller than the surface area of ​​the screen to be tested, which is conducive to reducing the probability of damaging other devices when charges are formed on the surface of the screen to be tested; the second conductor contacts the back of the screen to be tested and is used to support the screen to be tested, and can form an electric field with the first conductor, which is conducive to setting the screen to be tested in the electric field between the first conductor and the second conductor.

[0006] In a possible implementation, the first conductor is equidistant from the edge of the screen to be measured, which helps to reduce the probability of mismeasurement due to uneven electrical stress.

[0007] In a possible implementation, the first data includes the first power supply voltage of the screen to be tested, the first power supply current of the screen to be tested, and / or the first power supply power of the screen to be tested, and the second data includes the second power supply voltage of the screen to be tested, the second power supply current of the screen to be tested, and / or the second power supply power of the screen to be tested; when the difference between the first data and the second data satisfies one or more of the following conditions, the first test result of the screen to be tested is that the screen to be tested is a qualified product: the difference between the first power supply voltage and the second power supply voltage is greater than or equal to the first threshold value; the difference between the first power supply current and the second power supply current is greater than or equal to the second threshold value; or the difference between the first power supply power and the second power supply power is greater than or equal to the third threshold value; when the difference between the first data and the second data satisfies one or more of the following conditions, the first test result of the screen to be tested is that the screen to be tested is a defective product: the difference between the first power supply voltage and the second power supply voltage is less than the first threshold value; the difference between the first power supply current and the second power supply current is less than the second threshold value; or the difference between the first power supply power and the second power supply power is less than the third threshold value. In this way, by comparing the power supply voltage, power supply current and / or power supply of the screen to be tested before and after the electric field is applied, it is determined whether the display function of the screen to be tested is defective, which is conducive to the testing of the screen.

[0008] In a possible implementation, the first data includes a second image, the second image is an image displayed on the screen to be tested when the first image is displayed on the screen to be tested and the screen to be tested has not been subjected to an electric field, and the second data includes a third image, the third image is an image displayed on the screen to be tested when the first image is displayed on the screen to be tested and the screen to be tested has been subjected to an electric field for a first period of time; according to the difference between the first data and the second data, a first test result of the screen to be tested is obtained, including: when the color difference between the second image and the third image is greater than or equal to a fourth threshold, the first test result of the screen to be tested is obtained as a defective product; or when the color difference between the second image and the third image is less than the fourth threshold, the first test result of the screen to be tested is obtained as a qualified product. In this way, by comparing the images presented by the screen to be tested for displaying the first image before and after the electric field is applied, it is determined whether the display function of the screen to be tested has defects, which is conducive to the testing of the screen.

[0009] In a possible implementation, the test system further includes a photographing device, and the second image and the third image are obtained from the photographing device; the photographing device is used to photograph the screen to be tested to obtain the second image when the first image is displayed on the screen to be tested and the screen to be tested has not been subjected to an electric field, and is used to photograph the screen to be tested to obtain the third image when the first image is displayed on the screen to be tested and the screen to be tested has been subjected to an electric field for a first period of time. In this way, obtaining the second image and the third image through the photographing device is conducive to more accurately obtaining the image presented by the screen to be tested for displaying the first image, compared with the image obtained by screen recording or screenshot.

[0010] In a possible implementation, when the color difference between the second image and the third image is greater than or equal to the fourth threshold, obtaining the first test result of the screen to be tested is that the screen to be tested is a defective product, including: when the color difference between the first area in the second image and the second area in the third image is greater than or equal to the fourth threshold, obtaining the first test result of the screen to be tested is that the screen to be tested is a defective product, and the position of the first area in the second image is the same as the position of the second area in the third image. In this way, if the color difference of the local area between the second image and the third image is greater than the fourth threshold, it can be said that the screen to be tested is a defective product, which is conducive to improving the test accuracy.

[0011] In a possible implementation, the method further includes: obtaining third data and fourth data; the third data is data presented by the screen to be tested when the fourth image is displayed on the screen to be tested and the screen to be tested is not subjected to an electric field; the fourth data is data presented by the screen to be tested after the fourth image is displayed on the screen to be tested and the screen to be tested is subjected to an electric field for a first period of time, and the brightness and / or grayscale of the fourth image are different from those of the first image; according to the difference between the third data and the fourth data, a second test result of the screen to be tested is obtained; according to whether the first test result and the second test result are the same, a third test result of the screen to be tested is obtained. In this way, multiple test results are obtained through different images, and the final result is determined through multiple test results, which is conducive to improving the test accuracy.

[0012] In a possible implementation, according to whether the first test result and the second test result are the same, a third test result of the screen to be tested is obtained, including: if the first test result and the second test result are the same, the third test result is the same as the first test result; or, if the first test result and the second test result are different, the third test result is that the screen to be tested is a defective product. In this way, determining the final result through multiple test results is conducive to improving the test accuracy.

[0013] In a possible implementation, the method further includes: obtaining fifth data and sixth data; the fifth data is data presented by the screen to be tested when the fifth image is displayed on the screen to be tested and the screen to be tested has not been subjected to an electric field; the sixth data is data presented by the screen to be tested when the fifth image is displayed on the screen to be tested and the screen to be tested has been subjected to an electric field for a first period of time, the brightness and / or grayscale of the fifth image is different from that of the fourth image, and the brightness and / or grayscale of the fifth image is different from that of the first image; according to the difference between the fifth data and the sixth data, a fourth test result of the screen to be tested is obtained; according to whether the fourth test result is the same as the third test result, a fifth test result of the screen to be tested is obtained. In this way, more test results are obtained through more images, and the final result is determined through more test results, which is conducive to improving the test accuracy and reducing the probability of false detection.

[0014] In a possible implementation, the fifth test result of the screen to be tested is obtained according to whether the fourth test result is the same as the third test result, including: when the fourth test result is the same as the third test result, the fifth test result is the same as the third test result; or, when the fourth test result is different from the third test result, the fifth test result is that the screen to be tested is a defective product. In this way, the final result is determined by more test results, which is conducive to improving the test accuracy and reducing the probability of false detection.

[0015] In the second aspect, the present application proposes a screen testing system, including: an electric field applying device, a screen to be tested and a control device, the electric field applying device including a first conductor and a second conductor arranged opposite to each other, when the first conductor and the second conductor are respectively energized, an electric field is formed between the first conductor and the second conductor, and when the screen to be tested is set in the electric field between the first conductor and the second conductor, the charge is conducted from the surface of the screen to be tested to the inside of the screen to be tested; the control device is used to obtain a first test result of the screen to be tested based on the difference between the first data and the second data; the first data is the data presented by the screen to be tested when the first image is displayed on the screen to be tested and the screen to be tested has not been subjected to the electric field applied by the electric field applying device; the second data is the data presented by the screen to be tested when the first image is displayed on the screen to be tested and the screen to be tested has been subjected to the electric field application for a first period of time.

[0016] In a possible implementation, the first conductor contacts the surface of the screen to be tested, and the contact area between the first conductor and the screen to be tested is smaller than the surface area of ​​the screen to be tested; the second conductor contacts the back side of the screen to be tested, and is used to support the screen to be tested.

[0017] In a possible implementation, the first conductor is equidistant from an edge of the screen to be tested.

[0018] In one possible implementation, the test system also includes a photographing device; the photographing device is used to photograph the screen to be tested to obtain a second image when the first image is displayed on the screen to be tested and the screen to be tested has not been subjected to an electric field; and to photograph the screen to be tested to obtain a third image when the first image is displayed on the screen to be tested and the screen to be tested has been subjected to an electric field applied for a first period of time; and transmit the second image and the third image to the control device, wherein the first data includes the second image and the second data includes the third image.

[0019] In one possible implementation, the screen testing system also includes a screen lighting device; the screen lighting device is used to display a first image for the screen to be tested, and to obtain first data and second data, and to transmit the first data and the second data to the control device, wherein the first data includes a first power supply voltage of the screen to be tested, a first power supply current of the screen to be tested, and / or a first power supply power of the screen to be tested, and the second data includes a second power supply voltage of the screen to be tested, a second power supply current of the screen to be tested, and / or a second power supply power of the screen to be tested.

[0020] In a third aspect, the present application provides a screen testing device, including a processor and a memory, wherein the memory is used to store code instructions, and the processor is used to run the code instructions to execute the method described in any possible implementation of the first aspect.

[0021] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program. When the computer program is executed by a processor, the method described in any possible implementation manner of the first aspect is implemented.

[0022] In a fifth aspect, the present application provides a computer program product, which includes a computer program. When the computer program is executed, the computer executes the method described in any possible implementation manner of the first aspect.

[0023] In a sixth aspect, the present application provides a chip or a chip system, the chip or chip system comprising at least one processor and a communication interface, the communication interface and the at least one processor are interconnected by a line, and the at least one processor is used to run a computer program or instruction to execute the method described in any possible implementation of the first aspect. The communication interface in the chip can be an input / output interface, a pin or a circuit, etc.

[0024] In a possible implementation, the chip or chip system described above in the present application further includes at least one memory, in which instructions are stored. The memory may be a storage unit inside the chip, such as a register, a cache, etc., or a storage unit of the chip (e.g., a read-only memory, a random access memory, etc.).

[0025] It should be understood that the second to sixth aspects of the present application correspond to the technical solutions of the first aspect of the present application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of an OLED screen;

[0027] Figure 2 It is a schematic diagram of abnormal analysis of an OLED screen;

[0028] Figure 3 It is a schematic diagram of a solution design provided by an embodiment of the present application;

[0029] Figure 4 is a schematic diagram of a screen testing system provided in an embodiment of the present application;

[0030] Figure 5 is a schematic diagram of another screen testing system provided in an embodiment of the present application;

[0031] Figure 6 is a schematic diagram of an electrostatic charge or voltage applying device provided in an embodiment of the present application;

[0032] Figure 7 It is a front schematic diagram of a screen to be tested and a first conductor provided in an embodiment of the present application;

[0033] Figure 8 is a schematic diagram of a screen testing method provided in an embodiment of the present application;

[0034] Fig. 9 is a schematic diagram of another screen testing method provided in an embodiment of the present application;

[0035] Fig.10 is a schematic flow chart of another screen testing method provided in an embodiment of the present application;

[0036] Fig.11 It is a schematic block diagram of a chip provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] In order to clearly describe the technical solution of the embodiment of the present application, the following description is first made:

[0038] In the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with substantially the same functions and effects. For example, the first conductor and the second conductor are only used to distinguish different conductors, and do not limit their order. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit them to be different.

[0039] It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0040] In the embodiments of the present application, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, a--c, bc, or abc, where a, b, c can be single or multiple.

[0041] It should be noted that the "at..." in the embodiment of the present application can be the instant when a certain situation occurs, or can be a period of time before or after a certain situation occurs, and the embodiment of the present application does not specifically limit this. In addition, the display interface provided in the embodiment of the present application is only an example, and the display interface can also include more or less content.

[0042] The OLED screens of electronic devices such as mobile phones, wearable products or tablets may experience abnormal screen flickering or green screen, affecting the user experience.

[0043] In some scenarios, the thin film transistor (TFT) structure included in the OLED screen can be a P-Si structure, and this type of TFT is easily affected by negative charges. In a dry environment with low temperature, the friction between electronic devices and objects such as clothing, skin or hair can generate negative charges. If the negative charges accumulate on the OLED screen of the electronic device for a long time and are not dissipated in time, the negative charges can be conducted to the back of the OLED screen, affecting the stability of the TFT in the OLED screen.

[0044] For example, Figure 1 FIG. 1 shows a schematic diagram of the structure of an OLED screen. Figure 1 As shown, the structure of the OLED screen includes a cover glass (CG), an optical clear adhesive (OCA), a polarizer (POL), an OLED module and a middle frame. Among them, the OLED module includes an encapsulation layer, a light-emitting layer and a driving circuit. The driving circuit includes an array substrate row driver (gate driver on array, GOA) circuit and an array emission driver (emission driver on array, EOA) circuit. The GOA circuit and the EOA circuit are used to drive the operation of the entire row of TFTs. The TFT is used to drive the light-emitting devices in the light-emitting layer, such as OLED, to emit light; the encapsulation layer is used to isolate the light-emitting layer and the driving circuit from the influence of moisture and oxygen. The middle frame is the border structure of the electronic device. OCA is used to paste CG and POL. The POL, OLED module and the middle frame are bonded with caulking glue. Both OCA and caulking glue may overflow. Figure 1 During the process, the caulking glue overflowed.

[0045] When a large amount of negative static charge accumulates on the CG surface of the OLED screen, the negative static charge can be conducted along the OCA. At the same time, the gap filler overflows and bonds the OLED module. The negative static charge can be conducted to the OLED module along the gap filler overflow, forming an electrostatic field. The electrostatic field will affect the stability of the TFT, causing the screen to flicker or green.

[0046] Figure 2 The process of analyzing the reasons for the flickering or green screen of the OLED screen in detail is shown. Figure 2 As shown in the figure, the process of static electricity generation is as follows: the CG surface of the screen of the electronic device rubs against the user's hands, hair, clothing and other objects to generate negative static electricity, which continues to accumulate on the CG surface to form an electrostatic field, and the voltage of the electrostatic field can reach hundreds of volts or thousands of volts. Among them, the CG surface of the screen may not be covered with a film, or may be covered with an anti-fingerprint coating (AF) or other films, which is not limited in the embodiments of the present application.

[0047] Conduction of static electricity: If the negative static charge on the screen CG surface is not dissipated in time, the negative static charge can be conducted along the glue due to the small resistance of the glue. 1) In some implementations, as mentioned above Figure 1 As shown, negative static charge is conducted along the gap filler overflow to the OLED module, forming an electrostatic field. 2) In other implementations, if the OCA overflows and overlaps the OLED module, negative static charge can be conducted along the OCA, and at the same time, negative static charge can be conducted along the gap filler overflow to the OLED module, forming an electrostatic field.

[0048] The effect of static electricity on OLED modules is due to the back gate effect, as mentioned above. Figure 1 As shown in the figure, there is a negative pressure caused by negative charges between the OLED module and the substrate. For TFT, the negative pressure can be regarded as an additional bottom gate, which affects the back channel and causes leakage current in the TFT. Different TFTs in the driving circuit are affected to different degrees, resulting in different failure phenomena.

[0049] Reasons for green screen or flickering screen: 1) Among the three RGB colors, green is the most efficient. Under the interference of electrostatic field, it affects the TFT characteristics, resulting in leakage, and the green color is most obvious, resulting in green. Especially in low brightness and always on display (AOD) mode, the green color is most obvious. 2) The logical function of the GOA circuit or EOA circuit in the electronic device fails, which manifests as a flickering screen or a green screen. Under the interference of electrostatic field, the logical function of the GOA circuit or EOA circuit fails, affecting the abnormality of the TFT of the entire row and causing a flickering screen.

[0050] If the screen of an electronic device has problems such as flickering or green screen, it affects the user experience and may cause the user to return the electronic device. Before the screen or electronic device leaves the factory, the screen is generally tested. The reason why the screen is abnormal may be that the impact of the charge on the screen is not considered during the test, or the screen is tested by charge, but the test is inaccurate, resulting in problems with the screen or electronic device after leaving the factory.

[0051] In view of this, the embodiments of the present application provide a screen testing method, a screen testing system and related devices. During the process of testing the screen to be tested, the screen to be tested can be placed in an electric field to facilitate the conduction of charge from the surface of the screen to be tested to the inside of the screen to be tested. By comparing the data before and after the electric field is applied to the screen to be tested, the test result of the screen to be tested is obtained. This is beneficial to reducing the probability that the screen to be tested cannot be effectively tested due to the influence of the environment or humidity on the charge, thereby improving the test accuracy.

[0052] In order to better understand the screen testing method provided by the embodiment of the present application, the design concept of the embodiment of the present application is first introduced in detail.

[0053] Figure 3 A schematic diagram of a design idea is shown. Figure 3 As shown, to test the effect of the charge on the screen, it is necessary to determine how to apply the charge to the screen to be tested. In some implementations, the embodiments of the present application can provide a stable source of charge for the screen of the electronic device. For example, the embodiments of the present application can externally connect negative high voltage to the back of the screen module, that is, apply negative charge to the back of the screen module, which reduces the flow of charge, can provide a stable source of negative pressure for the screen to be tested, and can also avoid environmental factors from interfering with the charge. In other implementations, the embodiments of the present application can provide a conductive path for the screen of the electronic device. For example, the embodiments of the present application can post conductive cloth (or metal plate) on the surface of the screen CG. The conductive cloth can form a vertical electric field with the conductor on the back of the screen, so that the negative charge moves from the edge of the middle frame of the electronic device to the middle of the screen. In this way, the vertical electric field can accelerate the movement of negative charge, so that the negative charge moves to the back of the screen as soon as possible, which is conducive to faster stimulation of screen defects. During the test process, it is conducive to shortening the test time. The embodiments of the present application focus on the method of testing the screen with a vertical electric field.

[0054] The different designs of the voltage of the conductive cloth in the embodiments of the present application form different degrees of electric field strength. Among them, the voltage of the conductive cloth can be called the electrostatic excitation voltage. In this case, the size of the electrostatic excitation voltage and the duration of the electrostatic excitation need to be considered.

[0055] Among them, the selection of electrostatic excitation voltage may include consideration of the following aspects: 1) The voltage generated by the friction between the user's hand, skin or clothing and the screen, which is conducive to simulating the real environment and improving the credibility of the measurement results. 2) The voltage for defect reproduction, that is, whether the voltage that causes the screen to appear bad can be repeated. 3) The degree of differentiation of the anti-static ability of different screens, that is, different electrostatic excitation voltages can be used for different products. In this way, the probability of a longer test time due to a small voltage can be reduced, and the probability of damage to the product due to excessive voltage can also be reduced.

[0056] The choice of electrostatic excitation duration can be different in different scenarios. For example, the choice of electrostatic excitation duration can take into account factors such as the degree of failure of different projects, the corresponding relationship between the proportion and market performance, etc.

[0057] To test the effect of charge on the screen, it is necessary to consider the characterization of the failure phenomenon: 1) Reproducing adverse market phenomena, that is, the test makes the screen exhibit phenomena that exist in the market, such as a green screen or a flickering screen; 2) The excitation voltage and time are selected to match the product's market performance, that is, the excitation voltage and time can match the product's performance.

[0058] In summary, the embodiments of the present application can energize the conductors on the surface of the screen to be tested and the back of the screen to be tested, so that the screen to be tested is in an electric field, so as to control the direction of charge movement, which is beneficial to reduce the probability that the screen to be tested cannot be effectively tested due to the influence of the environment or humidity on the charge, thereby improving the test accuracy; different electrostatic excitation voltages and electrostatic excitation durations can also be selected for different screens and different test requirements, so as to meet different scenarios, with greater flexibility and a wider range of uses.

[0059] The following is an introduction to the screen testing system used in the screen testing method provided in the embodiment of the present application.

[0060] Figure 4 FIG. 1 is a schematic diagram of a screen testing system provided by an embodiment of the present application. Figure 4 As shown, the screen test system includes a control device, a screen lighting device, an electrostatic charge or voltage applying device, a camera device, and a screen to be tested. The functions of each device in the screen test system are as follows:

[0061] 1) The screen to be tested is a screen that needs to be tested. The embodiment of the present application can test one screen to be tested, or can test multiple screens to be tested at the same time, which is not limited in the embodiment of the present application.

[0062] 2) The photographing device is used to photograph the image displayed on the screen to be tested. The photographing device can be any device including a camera, for example, the photographing device can be a high-speed camera. The embodiments of the present application do not limit the parameters such as the performance and structure of the photographing device.

[0063] 3) The electrostatic charge or voltage applying device is a device that can apply electrical stress to the screen to be tested, and is used to apply an electric field to the screen to be tested. The electrostatic charge or voltage applying device can apply an electric field to the screen to be tested by outputting a charge, or by outputting a voltage, which is not limited in the embodiments of the present application.

[0064] 4) The screen lighting device may include a program for lighting up the screen and displaying it, which can be used to light up the screen to be tested. The screen lighting device may also include a program for causing the screen to display a specific picture in a loop, which is used to cause the screen to be tested to display a specific picture in a loop. The screen lighting device may also collect the power supply current and / or power supply voltage of the screen to be tested when the screen to be tested displays a specific picture. The timing for the screen lighting device to light up the screen and / or display a specific picture may be triggered by the user, or may be executed based on the instructions of the control device, which is not limited in the embodiments of the present application. Among them, the specific picture is used to represent the specified picture, which is a picture set for testing the performance of the screen to be tested. The supply voltage may be the voltage of the AVDD pin in the screen to be tested, and the supply current may be the current flowing through the AVDD pin.

[0065] 5) The control device may include a defect detection module and an interception result output module. The defect detection module is used to detect whether the electric field can stimulate defects in the screen to be tested, or in other words, whether the electric field can cause the screen to be tested to be defective. The interception result output module is used to output the defective screen to facilitate the subsequent interception of the defective screen. The defective screen may also be referred to as a poor screen, or a defective product, which is not limited in the embodiments of the present application. Intercepting a defective screen can be understood as not selling or marketing the defective screen.

[0066] In some implementations, the defect detection module may include a display function defect recognition module and a display effect defect recognition module. The display function defect recognition module may detect the display function of the screen to be tested, such as a black screen, a distorted screen, or a flickering screen. The display effect defect recognition module may detect the display effect of the screen to be tested, such as a green screen or partial light leakage.

[0067] Before the electrostatic charge or voltage application device applies an electric field to the screen to be tested, the display function defect identification module in the control device can obtain the power supply current and / or power supply voltage of the screen to be tested when the screen to be tested cyclically displays a specific picture from the screen lighting device. It can also obtain the power supply current, power supply voltage and / or power supply of the screen to be tested when the screen to be tested cyclically displays a specific picture from the screen lighting device during the process of the electrostatic charge or voltage application device applying an electric field to the screen to be tested or after the electrostatic excitation is applied. By comparing the power supply current, power supply voltage and / or power supply before and after the electric field is applied, it is determined whether there is a problem with the display function of the screen to be tested. It can be understood that the power supply power of the screen to be tested is the product of the power supply current and the power supply voltage.

[0068] Before the electrostatic charge or voltage applying device applies an electric field to the screen to be tested, the display effect defect recognition module in the control device can use a photographing device to photograph the image displayed on the screen to be tested when the screen to be tested displays a specific picture in a cycle. It can also use a photographing device to photograph the image displayed on the screen to be tested when the screen to be tested displays a specific picture in a cycle after the electrostatic charge or voltage applying device applies an electric field to the screen to be tested. By comparing the color difference of the images before and after applying the electric field, it is determined whether there is a problem with the display effect of the screen to be tested.

[0069] In some implementations, the interception result output module in the control device can obtain from the display function defect recognition module whether there is a problem with the display function of the screen to be tested, and can obtain from the display effect defect recognition module whether there is a problem with the display effect of the screen to be tested, and then if there is a problem with the display function of the screen to be tested, and / or if there is a problem with the display effect of the screen to be tested, it can output that the screen to be tested is a defective screen. The embodiment of the present application does not limit the form of the output result of the interception result output module.

[0070] Above Figure 4 The screen test system shown can be used to test a single screen. The present application also provides a screen test system that can test the screen in an electronic device. This test method can be called a whole device test.

[0071] For example, Figure 5 FIG. 2 is a schematic diagram of another screen testing system provided by an embodiment of the present application. Figure 5 As shown, the screen test system includes a control device, an electrostatic charge or voltage applying device, a camera device, and an electronic device including a screen. The functions of the electrostatic charge or voltage applying device and the camera device are the same as those described above. Figure 4 The functions shown are the same and will not be repeated here.

[0072] The electronic device includes a device that can light up the screen, so the electronic device can light up the screen based on the instruction of the control device for lighting up the screen. The electronic device can also display a specific screen in a loop based on the instruction of the control device for cyclically displaying a specific screen, and transmit the power supply current, power supply voltage and / or power supply of the screen when the screen displays the specific screen to the control device.

[0073] The control device can obtain the power supply current, power supply voltage and / or power supply of the screen when the screen displays a specific picture from the electronic device to determine whether there is a problem with the display function of the screen. It can obtain an image from the photographing device to determine whether there is a problem with the display effect of the screen, and can output a defective screen.

[0074] In some implementations, the above Figure 5 In the test system shown, the control device is optional, and the electronic device has a processing function, which can determine whether there is a problem with the display function of the screen based on the power supply current, power supply voltage and / or power supply of the screen when the screen displays a specific picture before and after the electric field is applied, and can determine whether there is a problem with the display effect of the screen based on the images captured by the camera device before and after the electric field is applied.

[0075] In some implementations, the above Figure 5In the test system shown, the photographing device is optional, and the electronic device has the function of recording the screen or taking a screenshot. The electronic device can obtain the image displayed on the screen to be tested when the screen to be tested loops to display a specific screen through the recording or screenshot function, and can determine whether there is a problem with the display effect of the screen based on the image.

[0076] In order to better understand the screen test system provided by the embodiment of the present application, the following is Figure 4 Taking the screen test system shown in the figure as an example, each device in the screen test system is introduced in detail.

[0077] Figure 6 FIG. 1 is a schematic diagram of a static charge or voltage applying device provided in an embodiment of the present application. Figure 6 As shown, the electrostatic charge or voltage applying device includes: an electrostatic charge or high voltage generator, a first conductor, a second conductor, an insulating bracket and an insulating base.

[0078] 1) The electrostatic charge or high voltage generator can be a DC high voltage device that can stably provide electrostatic charge. In some implementations, the electrostatic charge or high voltage generator can use a high voltage power supply device to output a stable positive high voltage or negative high voltage. In other implementations, the electrostatic charge or high voltage generator can use an electrostatic charge generating device that can stably output positive or negative charges. In this way, compared with the method of using an electrostatic gun to discharge, it is helpful to reduce the probability of the screen not lighting up due to the discharge of the electrostatic gun tip, which is helpful to improve the accuracy of the screen test.

[0079] 2) The first conductor contacts the surface of the screen to be tested, and can be a flat metal plate or a flexible conductive cloth. When the first conductor is a conductive cloth, the first conductor can fit well with the surface of the screen to be tested. When there is voltage or charge on the first conductor, the voltage or charge can be evenly distributed on the surface of the screen to be tested. This helps to reduce the probability of misdetection due to uneven charge distribution.

[0080] In some implementations, the contact area between the first conductor and the screen to be tested can be smaller than the surface area of ​​the screen to be tested, which is beneficial for the user to observe the display effect of the screen to be tested. In the whole machine test scenario, it is also beneficial to reduce the probability of damage to other devices in the electronic device due to the charge caused by the first conductor being too large.

[0081] In some implementations, the first conductor may be located at an equal distance from the edge of the screen to be tested, for example, four sides, which helps to reduce the probability of misdetection due to differences in electrical stress on the screen to be tested.

[0082] For example, Figure 7 FIG. 1 shows a front view of a screen to be tested and a first conductor. Figure 7As shown, the screen of the mobile phone is tested, the area where the first conductor contacts the screen of the mobile phone is smaller than the surface area of ​​the screen of the mobile phone, and the first conductor is equidistant from the four sides of the screen to be tested.

[0083] 3) The second conductor may be a metal plate, which is used to support the back of the screen to be tested and can form an electric field with the first conductor. In this way, when the screen to be tested is between the first conductor and the second conductor, the screen to be tested can be in the electric field formed between the first conductor and the second conductor. There are many possible implementations for forming an electric field between the first conductor and the second conductor.

[0084] In some implementations, the second conductor can be connected to the opposite electrode of the first conductor, so that an electric field is formed between the second conductor and the first conductor, and the electric field can control the conduction of charges from the surface of the screen to be tested to the inside. Figure 6 In the example shown, the first conductor is connected to the negative pole of the static charge or high voltage generator, and the second conductor is connected to the positive pole of the static charge or high voltage generator. When the first conductor and the second conductor are energized, an electric field is formed between the second conductor and the first conductor, and the electric field can control the charge to be conducted from the surface of the screen to be tested to the inside.

[0085] In other implementations, the first conductor is connected to the negative pole of the electrostatic charge or high voltage generator, and the second conductor is connected to the ground terminal of the electrostatic charge or high voltage generator. When the first conductor and the second conductor are energized, an electric field is formed between the second conductor and the first conductor, and the electric field can control the charge to be conducted from the surface of the screen to be tested to the inside.

[0086] In some other implementations, the first conductor is connected to the ground terminal of the electrostatic charge or high voltage generator, and the second conductor is connected to the positive electrode of the electrostatic charge or high voltage generator. When the first conductor and the second conductor are energized, an electric field is formed between the second conductor and the first conductor, and the electric field can control the charge to be conducted from the surface of the screen to be tested to the inside.

[0087] In some scenarios, such as Figure 6 As shown, the electrostatic charge or voltage applying device may include a plurality of first conductors and a plurality of second conductors, so that a plurality of screens to be tested can be tested simultaneously, which is beneficial to improving the testing efficiency.

[0088] 4) Insulating brackets, which are used to support the second conductor. The material can be a high-insulation material, which is helpful to prevent the charge flowing to the screen to be tested from flowing to other places, and can reduce the probability of inaccurate testing due to unstable charge. The number of insulating brackets can be related to the number of screens to be tested. The more screens to be tested, the more insulating brackets can be provided. There can be a one-to-one relationship between the number of insulating brackets and the number of screens to be tested, or there can be a many-to-one relationship, which is not limited in the embodiments of the present application. For example, in Figure 6In the example shown, two insulating brackets are used to support one screen to be tested, and there is a many-to-one relationship between the number of insulating brackets and the number of screens to be tested.

[0089] 5) The insulating base is used to support the insulating bracket.

[0090] In some implementations, there may be no insulating support or insulating base in the electrostatic charge or voltage applying device, and the embodiments of the present application do not limit this. It is understandable that the insulating support and insulating base are only one implementation method, and the embodiments of the present application insulate the device supporting the second conductor, which is conducive to reducing the probability of inaccurate testing due to unstable charge.

[0091] The screen lighting device can light up the screen to be tested and enable the screen to be tested to display a specific picture in a cycle. At the same time, when the screen to be tested displays a specific picture, the power supply current, power supply voltage and / or power supply of the screen to be tested are collected, and the power supply current, power supply voltage and / or power supply of the screen to be tested are transmitted to the control device.

[0092] Exemplarily, the screen lighting device may be a lighting machine. The lighting machine may control the screen to be tested to light up under the instruction of the control device, or may control the screen to be tested to light up under the operation of the user, which is not limited in the embodiment of the present application.

[0093] The lighting machine can control the screen to be tested to light up, and can make the screen to be tested display three images in a cycle. The display time of each image can be the same or different, and the embodiment of the present application does not limit this. If the display time of different images is the same, the implementation is simple. If the display time of different images is different, the flexibility is greater. It can be understood that the lighting machine causing the screen to be tested to display these three images is only an example. The lighting machine can also cause the screen to be tested to display one image, two images, or six images, etc. The embodiment of the present application does not limit the number of images. Among them, the screen to be tested displays three images, which can also be understood as the screen to be tested displaying three pictures.

[0094] The lighting machine allows the screen to be tested to display three images, namely a low-brightness low-grayscale image, a medium-brightness medium-grayscale image, and a high-brightness high-grayscale image. These three images are more obvious when the EOA or GOA circuit fails, so as to more quickly detect whether there is a problem with the screen's display function.

[0095] The lighting machine can collect the power supply current, power supply voltage and / or power supply of the screen to be tested when the screen to be tested displays each image, and can transmit the collected power supply current, power supply voltage and / or power supply to the control device.

[0096] There are many possible situations when the lighting machine transmits the collected current value and / or voltage value to the control device. In some implementations, the lighting machine can transmit the current value and / or voltage value corresponding to an image to the control device, so that the real-time performance is stronger. In other implementations, the lighting machine can transmit the current value and / or voltage value corresponding to at least two images to the control device, so that the number of transmissions is less, which is conducive to reducing interactions.

[0097] The display function defect identification module in the control device can analyze the supply current, supply voltage and / or supply power of the screen to be tested before and after the electrostatic charge or voltage application device applies an electric field to the screen to be tested, so as to determine whether there is a defect in the display function of the screen to be tested.

[0098] For example, Figure 8 A schematic diagram of a screen testing method is shown. Figure 8 As shown, the method comprises the following steps:

[0099] S801. The screen lighting device can light up the screen to be tested, and make the screen to be tested cyclically display three images, wherein the three images are a low-brightness low-grayscale image, a medium-brightness medium-grayscale image, and a high-brightness high-grayscale image.

[0100] S802: The screen lighting device may collect the power supply current, power supply voltage and power supply of the screen to be tested when the screen to be tested displays each image, and may transmit the collected power supply current, power supply voltage and / or power supply to the control device. The power supply current, power supply voltage and / or power supply collected by the screen lighting device may be referred to as data A.

[0101] It is understandable that the screen to be tested has not been subjected to an electric field, and the power supply current when the screen to be tested displays the same image can be the same, the power supply voltage when the screen to be tested displays the same image can be the same, and the power supply power when the screen to be tested displays the same image can be the same. Therefore, in order to save data transmission, the screen lighting device can collect the power supply current, power supply voltage and power supply of the screen to be tested once when the screen to be tested displays each image.

[0102] Data A may include data collected by the screen lighting device when the screen to be tested displays a low-brightness, low-grayscale image once, data collected by the screen lighting device when the screen to be tested displays a medium-brightness, medium-grayscale image once, and / or data collected by the screen lighting device when the screen to be tested displays a high-brightness, high-grayscale image once.

[0103] In some implementations, S802 is optional, and the power supply current, power supply voltage and / or power supply required for the screen to be tested to display the three images are known and do not need to be collected.

[0104] S803: The electrostatic charge or voltage applying device may apply an electric field to the screen to be tested.

[0105] The screen to be tested is located between the first conductor and the second conductor, and the high-voltage generator in the electrostatic charge or voltage applying device can energize the first conductor and the second conductor respectively. When the first conductor and the second conductor are energized respectively, the screen to be tested is in an electric field. The voltage output by the electrostatic charge or high-voltage generator can be the above-mentioned electrostatic excitation voltage. The duration of applying the electric field can be the above-mentioned electrostatic excitation duration, and the electrostatic excitation voltage and electrostatic excitation duration are preset before the test.

[0106] S804: When the screen to be tested is under the state of applying an electric field, the control device obtains data B from the screen lighting device.

[0107] When an electric field is applied to the screen to be tested, the power supply current when the screen to be tested displays the same image may change, the power supply voltage when the screen to be tested displays the same image may change, and the power supply power when the screen to be tested displays the same image may change. The screen lighting device can collect the power supply current, power supply voltage and power of the screen to be tested when the screen to be tested displays each image.

[0108] Data B may include data collected by the screen lighting device when the screen to be tested displays a low-brightness and low-grayscale image when an electric field is applied to the screen, data collected by the screen lighting device when the screen to be tested displays a medium-brightness and medium-grayscale image, and / or data collected by the screen lighting device when the screen to be tested displays a high-brightness and high-grayscale image.

[0109] In some embodiments, the screen lighting device may collect data B after applying the electric field for a period of time and transmit the data B to the screen lighting device, and the period of time may be less than or equal to the electrostatic excitation period. In this way, it is possible to detect whether the screen has defects while saving calculation amount.

[0110] S805. The display function defect identification module in the control device can determine whether there is a defect in the display function of the screen to be tested according to the difference between the data A and the data B.

[0111] If the difference between data A and data B meets one or more of the following conditions, the display function of the screen under test is defective:

[0112] The difference between the data collected by the screen lighting device when the screen to be tested displays a low-brightness and low-grayscale image in data A and the data collected by the screen lighting device when the screen to be tested displays a low-brightness and low-grayscale image in data B is relatively large;

[0113] The difference between the data collected by the screen lighting device when the screen to be tested in data A displays a medium-bright medium-grayscale image and the data collected by the screen lighting device when the screen to be tested in data B displays a medium-bright medium-grayscale image is relatively large; or,

[0114] There is a large difference between the data collected by the screen lighting device when the screen to be tested displays a bright high-grayscale image in data A and the data collected by the screen lighting device when the screen to be tested displays a bright high-grayscale image in data B.

[0115] The difference between data A and data B is that the display function of the screen under test is not defective in one or more of the following cases:

[0116] The difference between the data collected by the screen lighting device when the screen to be tested displays a low-brightness and low-grayscale image in data A and the data collected by the screen lighting device when the screen to be tested displays a low-brightness and low-grayscale image in data B is small;

[0117] The difference between the data collected by the screen lighting device when the screen to be tested in data A displays a medium-bright medium-grayscale image and the data collected by the screen lighting device when the screen to be tested in data B displays a medium-bright medium-grayscale image is small; or,

[0118] The difference between the data collected by the screen lighting device when the screen to be tested displays a bright high-grayscale image in data A and the data collected by the screen lighting device when the screen to be tested displays a bright high-grayscale image in data B is relatively small.

[0119] The data collected by the screen lighting device when the screen to be tested displays a low-brightness and low-grayscale image may include the power supply voltage, power supply current and / or power supply power of the screen to be tested. The data collected by the screen lighting device when the screen to be tested displays a low-brightness and low-grayscale image in data A is significantly different from the data collected by the screen lighting device when the screen to be tested displays a low-brightness and low-grayscale image in data B. It may include one or more of the following situations: the difference between the power supply voltage collected by the screen lighting device when the screen to be tested displays a low-brightness and low-grayscale image in data A and the power supply voltage collected by the screen lighting device when the screen to be tested displays a low-brightness and low-grayscale image in data B is greater than or equal to the voltage threshold;

[0120] The difference between the power supply current collected by the screen lighting device when the screen to be tested displays a low-brightness and low-grayscale image in data A and the power supply current collected by the screen lighting device when the screen to be tested displays a low-brightness and low-grayscale image in data B is greater than or equal to the current threshold; or,

[0121] The difference between the power supply power collected by the screen lighting device when the screen to be tested displays a low-brightness and low-grayscale image in data A and the power supply power collected by the screen lighting device when the screen to be tested displays a low-brightness and low-grayscale image in data B is greater than or equal to the power threshold.

[0122] The difference between the data collected by the screen lighting device when the screen to be tested in data A displays a low-brightness and low-grayscale image and the data collected by the screen lighting device when the screen to be tested in data B displays a low-brightness and low-grayscale image is small, which may include one or more of the following situations: the difference between the power supply voltage collected by the screen lighting device when the screen to be tested in data A displays a low-brightness and low-grayscale image and the power supply voltage collected by the screen lighting device when the screen to be tested in data B displays a low-brightness and low-grayscale image is less than the voltage threshold;

[0123] The difference between the power supply current collected by the screen lighting device when the screen to be tested displays a low-brightness and low-grayscale image in data A and the power supply current collected by the screen lighting device when the screen to be tested displays a low-brightness and low-grayscale image in data B is less than the current threshold; or,

[0124] The difference between the power supply power collected by the screen lighting device when the screen to be tested displays a high-brightness and high-grayscale image in data A and the power supply power collected by the screen lighting device when the screen to be tested displays a low-brightness and low-grayscale image in data B is less than the power threshold.

[0125] The situation of the medium-bright medium-grayscale image and the high-brightness high-grayscale image is the same as that of the low-brightness low-grayscale image, and will not be repeated here. It is understandable that the voltage threshold, current threshold and power threshold corresponding to different images can be the same or different, and the embodiments of the present application are not limited to this. If the voltage threshold, current threshold and power threshold corresponding to different images are different, the flexibility is greater. If the voltage threshold, current threshold and power threshold corresponding to different images are the same, the implementation is simple.

[0126] If a display function defect is detected in the screen to be tested during the application of the electric field, it means that the screen to be tested is a defective product and the test can be ended; if the duration of the electric field application reaches the electrostatic excitation duration and no display function defect is detected in the screen to be tested, it means that the screen to be tested has no display function defect and is a qualified product.

[0127] The screen testing method provided in the embodiment of the present application determines whether there are defects in the display function of the screen to be tested by comparing the data presented by the screen to be tested before and after the electric field is applied. This helps to reduce the probability that the screen to be tested cannot be effectively tested due to the influence of the environment or humidity on the charge, thereby improving the test accuracy.

[0128] The display effect defect recognition module in the control device can analyze the image displayed by the screen to be tested to display a specific picture before and after the electrostatic charge or voltage application device applies an electric field to the screen to be tested, so as to determine whether there is a defect in the display effect of the screen to be tested.

[0129] For example, Fig. 9 A schematic diagram of a screen testing method is shown. Fig. 9 As shown, the method comprises the following steps:

[0130] S901 , the screen lighting device lights up the screen to be tested, and makes the screen to be tested cyclically display three images, the three images being a low-brightness low-grayscale image, a medium-brightness medium-grayscale image, and a high-brightness high-grayscale image.

[0131] S902 , the photographing device photographs the images displayed by the screen to be tested, which are low-brightness and low-grayscale images, medium-brightness and medium-grayscale images, and high-brightness and high-grayscale images, to obtain data C.

[0132] The data C may include an image displayed when the screen to be tested displays a low-brightness, low-grayscale image, an image displayed when the screen to be tested displays a medium-brightness, medium-grayscale image, and / or an image displayed when the screen to be tested displays a high-brightness, high-grayscale image.

[0133] The camera device can collect data once or multiple times in a cycle, which is not limited in the present embodiment. If the camera device collects data multiple times in a cycle, the control device can perform multiple calculations based on these data to improve accuracy and reduce the probability of misdetection.

[0134] S903, the photographing device transmits data C to the control device.

[0135] The photographing device and the control device may be connected via a wired connection or a wireless connection, which is not limited in this application.

[0136] S904: The electrostatic charge or voltage applying device may apply an electric field to the screen to be tested.

[0137] This step may refer to the above-mentioned S803 and will not be described in detail here.

[0138] S905. When the duration of applying the electric field reaches the duration of electrostatic excitation, the application of the electric field is canceled. When the first conductor is removed from the surface of the screen to be tested, the photographing device photographs the images displayed by the screen to be tested, such as low-brightness and low-grayscale, medium-brightness and medium-grayscale, and high-brightness and high-grayscale images, to obtain data D.

[0139] The data D may include an image displayed when the screen to be tested displays a low-brightness, low-grayscale image, an image displayed when the screen to be tested displays a medium-brightness, medium-grayscale image, and / or an image displayed when the screen to be tested displays a high-brightness, high-grayscale image after the electric field is applied.

[0140] When the first conductor is moved away from the surface of the screen to be tested, the photographing device may collect data once or may collect data multiple times in a cycle, which is not limited in the embodiment of the present application.

[0141] S906: The photographing device transmits data D to the control device.

[0142] S907: The display effect defect recognition module in the control device can determine whether there is a defect in the display effect of the screen to be tested according to the difference between the data C and the data D.

[0143] If the difference between data C and data D satisfies one or more of the following conditions, the display function of the screen to be tested is defective:

[0144] The color difference between the image displayed by the screen to be tested in data C when displaying a low-brightness and low-grayscale image and the image displayed by the screen to be tested in data D when displaying a low-brightness and low-grayscale image is greater than or equal to a first color difference threshold;

[0145] The color difference between the image displayed by the screen to be tested in data C when displaying a medium-bright medium-grayscale image and the image displayed by the screen to be tested in data D when displaying a medium-bright medium-grayscale image is greater than or equal to the second color difference threshold; or,

[0146] The color difference between the image displayed by the screen to be tested in data C when displaying a high-brightness high-grayscale image and the image displayed by the screen to be tested in data D when displaying a high-brightness high-grayscale image is greater than or equal to a third color difference threshold.

[0147] If the difference between data C and data D satisfies one or more of the following conditions, the display function of the screen to be tested is not defective:

[0148] The color difference between the image displayed by the screen to be tested in data C when displaying a low-brightness and low-grayscale image and the image displayed by the screen to be tested in data D when displaying a low-brightness and low-grayscale image is less than a first color difference threshold;

[0149] The color difference between the image displayed by the screen to be tested in data C, which is a medium-bright medium-grayscale image, and the image displayed by the screen to be tested in data D, which is a medium-bright medium-grayscale image, is less than the second color difference threshold; or,

[0150] The color difference between the image displayed by the screen to be tested in data C, which is a high-brightness high-grayscale image, and the image displayed by the screen to be tested in data D, which is a high-brightness high-grayscale image, is less than the third color difference threshold.

[0151] The screen testing method provided in the embodiment of the present application determines whether there are defects in the display effect of the screen to be tested by comparing the images presented by the screen to be tested when displaying a specific image before and after the electric field is applied. This helps to reduce the probability that the screen to be tested cannot be effectively tested due to the influence of the environment or humidity on the charge, thereby improving the test accuracy.

[0152] In the above method, the control device can calculate the color difference of the two images. In some implementations, the control device can set the image obtained before the electric field is applied to N rows and M columns of local small areas, and extract a colorimetric parameter (W) for each local small area. x1 , Wy1 , L v1 ), the colorimetric parameters are used to calculate color difference, for example, the colorimetric parameters can be parameters extracted using CIELab* color space as a standard, Wx1 is used to represent the brightness of the color, Wy1 is used to represent the axis from green to red, and Lv1 is used to represent the axis from blue to yellow.

[0153] The control device can set the image obtained after the electric field is applied to N rows and M columns of local small areas, and extract a colorimetric parameter (W) for each local small area. x2 , W y2 , L v2 ). The control device can be based on the colorimetric parameters (W x1 , W y1 , L v1 )) and colorimetric parameters (W x2 , W y2 , L v2 ), and obtain the color difference of the two images. It can be understood that the two images are images displayed by the screen to be tested for displaying the same image.

[0154] In some implementations, color difference, colorimetric parameters (W x1 , W y1 , L v1 ) and colorimetric parameters (W x2 , W y2 , L v2 ) satisfies the following formula:

[0155]

[0156] Here, ΔE is the color difference.

[0157] The control device can be based on the above Figure 8 The method shown in the figure determines whether the display function of the screen to be tested is defective, and can be based on the above Fig. 9 The method shown determines whether the display effect of the screen to be tested is defective. If the display function of the screen to be tested is defective and / or the display effect of the screen to be tested is defective, the screen to be tested is defective. If the display function of the screen to be tested is not defective and the display effect of the screen to be tested is not defective, the screen to be tested is qualified.

[0158] The functions of various devices in the screen testing system are introduced above, and the screen testing method provided by the embodiment of the present application will be introduced below.

[0159] Fig.10 FIG. 1 is a schematic flow chart of a screen testing method provided by an embodiment of the present application. Fig.10As shown, the screen testing method can be applied to a testing system including an electric field applying device and a screen to be tested, the electric field applying device including a first conductor and a second conductor arranged opposite to each other, when the first conductor and the second conductor are respectively energized, an electric field is formed between the first conductor and the second conductor, and when the screen to be tested is set in the electric field between the first conductor and the second conductor, the charge is conducted from the surface of the screen to be tested to the inside of the screen to be tested; the screen testing method includes: obtaining first data and second data; the first data is the data presented by the screen to be tested when a first image is displayed on the screen to be tested and the screen to be tested has not been subjected to the electric field applied by the electric field applying device; the second data is the data presented by the screen to be tested when a first image is displayed on the screen to be tested and the screen to be tested has been subjected to the electric field applied for a first period of time; according to the difference between the first data and the second data, a first test result of the screen to be tested is obtained.

[0160] The electric field applying device is the above-mentioned electrostatic charge or voltage applying device. The screen to be tested is set in the electric field between the first conductor and the second conductor, which can be understood as the screen to be tested can be in the electric field between the first conductor and the second conductor. The first image can be the above-mentioned specific picture, which can be a low-brightness low-grayscale image, a medium-brightness medium-grayscale image, or a high-brightness high-grayscale image. In other implementations, the first image can be a low-brightness high-grayscale image, a medium-brightness low-grayscale image, or a high-brightness medium-grayscale image, etc., which is not limited in the embodiments of the present application.

[0161] The first duration may be the above-mentioned electrostatic excitation duration, or may be less than the electrostatic excitation duration, which is not limited in the embodiments of the present application. When the first duration is less than the electrostatic excitation duration, the screen to be tested may be in the process of applying an electric field, which is a scenario in the test process. The executor of the test method may be the above-mentioned control device, or may be the above-mentioned electronic device including a screen, which is not limited in the embodiments of the present application.

[0162] The first data may include data collected by the screen lighting device when the screen to be tested displays a low-brightness and low-grayscale image in data A, data collected by the screen lighting device when the screen to be tested displays a medium-brightness and medium-grayscale image, or data collected by the screen lighting device when the screen to be tested displays a high-brightness and high-grayscale image. And / or, the first data may include an image displayed by the screen to be tested in data C when displaying a low-brightness and low-grayscale image, an image displayed by the screen to be tested when displaying a medium-brightness and medium-grayscale image, or an image displayed by the screen to be tested when displaying a high-brightness and high-grayscale image.

[0163] The second data may include data collected by the screen lighting device when the screen to be tested displays a low-brightness, low-grayscale image in data B, data collected by the screen lighting device when the screen to be tested displays a medium-brightness, medium-grayscale image, or data collected by the screen lighting device when the screen to be tested displays a high-brightness, high-grayscale image. And / or, the first data may include an image displayed by the screen to be tested in data D when displaying a low-brightness, low-grayscale image, an image displayed by the screen to be tested when displaying a medium-brightness, medium-grayscale image, or an image displayed by the screen to be tested when displaying a high-brightness, high-grayscale image.

[0164] The first data is obtained when the screen to be tested is not subjected to the application of the electric field, and the second data is obtained when the screen to be tested is subjected to the application of the electric field for the first time period. According to the difference between the first data and the second data, it can be determined whether the screen to be tested is a qualified product, and the first test result can be obtained. It can be understood that the first test result is that the screen to be tested is a qualified product, or the first test result is that the screen to be tested is a defective product. In this way, the screen to be tested is placed in the electric field, and within the first time period, the electric field can control the conduction of charges from the surface of the screen to be tested to the inside of the screen to be tested, which is conducive to testing the influence of charges on the screen to be tested and improving the test accuracy.

[0165] Optionally, the first conductor contacts the surface of the screen to be tested, and the contact area between the first conductor and the screen to be tested is smaller than the surface area of ​​the screen to be tested; the second conductor contacts the back of the screen to be tested, and is used to support the screen to be tested. The positional relationship between the first conductor, the second conductor and the screen to be tested can be as described above. Figure 6 As shown. In this way, the first conductor contacts the surface of the screen to be tested, which is conducive to quickly gathering charges on the screen surface. The contact area between the first conductor and the screen to be tested is smaller than the surface area of ​​the screen to be tested, which is conducive to reducing the probability of damaging other devices when charges are formed on the surface of the screen to be tested. The second conductor contacts the back of the screen to be tested and is used to support the screen to be tested, which is conducive to setting the screen to be tested in the electric field between the first conductor and the second conductor.

[0166] Optionally, the first conductor is equidistant from the edge of the screen to be measured, which helps to reduce the probability of mismeasurement due to uneven electrical stress.

[0167] Optionally, the first data includes a first power supply voltage, a first power supply current, and / or a first power supply power of the screen to be tested, and the second data includes a second power supply voltage, a second power supply current, and / or a second power supply power of the screen to be tested; when the difference between the first data and the second data satisfies one or more of the following conditions, the first test result of the screen to be tested is that the screen to be tested is a qualified product: the difference between the first power supply voltage and the second power supply voltage is greater than or equal to a first threshold value; the difference between the first power supply current and the second power supply current is greater than or equal to a second threshold value; or, the difference between the first power supply power and the second power supply power is greater than or equal to a third threshold value; when the difference between the first data and the second data satisfies one or more of the following conditions, the first test result of the screen to be tested is that the screen to be tested is a defective product: the difference between the first power supply voltage and the second power supply voltage is less than the first threshold value; the difference between the first power supply current and the second power supply current is less than the second threshold value; or, the difference between the first power supply power and the second power supply power is less than the third threshold value.

[0168] The first threshold value may be the voltage threshold value, the second threshold value may be the current threshold value, and the third threshold value may be the power threshold value. The first threshold value is used to represent the critical value of the difference in supply voltage. When the difference between the two supply voltages is less than the first threshold value, it can be said that the difference between the two supply voltages is small. When the difference between the two supply voltages is greater than or equal to the first threshold value, it can be said that the difference between the two supply voltages is large. Similarly, the second threshold value is used to represent the critical value of the difference in supply current. When the difference between the two supply currents is less than the second threshold value, it can be said that the difference between the two supply currents is small. When the difference between the two supply currents is greater than or equal to the second threshold value, it can be said that the difference between the two supply currents is large. Similarly, the third threshold value is used to represent the critical value of the difference in supply power. When the difference between the two supply powers is less than the third threshold value, it can be said that the difference between the two supply powers is small. When the difference between the two supply powers is greater than or equal to the third threshold value, it can be said that the difference between the two supply powers is large.

[0169] The first duration may be less than or equal to the electrostatic excitation duration. Based on the difference between the first data and the second data, it can be determined whether the display function of the screen to be tested has defects. If the first test result shows that the screen to be tested is a defective product, it can be indicated that the display function of the screen to be tested has defects; if the first test result shows that the screen to be tested is a qualified product, it can be indicated that the display function of the screen to be tested has no defects. In this way, by comparing the power supply voltage, power supply current and / or power supply power of the screen to be tested before and after the electric field is applied, it is determined whether the display function of the screen to be tested has defects, which is conducive to the testing of the screen.

[0170] Optionally, the first data includes a second image, where the second image is an image displayed on the screen to be tested when the first image is displayed on the screen to be tested and the screen to be tested has not been subjected to an electric field, and the second data includes a third image, where the third image is an image displayed on the screen to be tested when the first image is displayed on the screen to be tested and the screen to be tested has been subjected to an electric field applied for a first period of time; based on the difference between the first data and the second data, a first test result of the screen to be tested is obtained, including: when the color difference between the second image and the third image is greater than or equal to a fourth threshold value, the first test result of the screen to be tested is that the screen to be tested is a defective product; or, when the color difference between the second image and the third image is less than the fourth threshold value, the first test result of the screen to be tested is that the screen to be tested is a qualified product.

[0171] The first duration may be equal to the electrostatic excitation duration. The fourth threshold may be the above-mentioned first color difference threshold, the second color difference threshold or the third color difference threshold. According to the difference between the first data and the second data, it may be determined whether the display effect of the screen to be tested has defects. If the first test result is that the screen to be tested is a defective product, it may be indicated that the display effect of the screen to be tested has defects; if the first test result is that the screen to be tested is a qualified product, it may be indicated that the display effect of the screen to be tested has no defects. In this way, by comparing the image presented by the screen to be tested to display the first image before and after the electric field is applied, it is determined whether the display function of the screen to be tested has defects, which is conducive to the testing of the screen.

[0172] Optionally, the test system further includes a photographing device, and the second image and the third image are obtained from the photographing device; the photographing device is used to photograph the screen to be tested to obtain the second image when the first image is displayed on the screen to be tested and the screen to be tested has not been subjected to an electric field, and is used to photograph the screen to be tested to obtain the third image when the first image is displayed on the screen to be tested and the screen to be tested has been subjected to an electric field for a first period of time. In this way, obtaining the second image and the third image through the photographing device is conducive to more accurately obtaining the image presented by the screen to be tested for displaying the first image, compared with the image obtained by recording or capturing the screen.

[0173] Optionally, when the color difference between the second image and the third image is greater than or equal to a fourth threshold, the first test result of the screen to be tested is that the screen to be tested is a defective product, including: when the color difference between the first area in the second image and the second area in the third image is greater than or equal to the fourth threshold, the first test result of the screen to be tested is that the screen to be tested is a defective product, and the position of the first area in the second image is the same as the position of the second area in the third image.

[0174] The first area may include one or more areas, and when the first area includes one area, the second area also includes one area. When the second area includes multiple areas, the second area also includes multiple areas. The second image may include N rows and M columns of local small areas, and the first area may be one or more of them. The third image may include N rows and M columns of local small areas, and the second area may be one or more of them. If the color difference between the areas with the same position in the second image and the third image is greater than the fourth threshold, it means that the screen to be tested is a defective product. In this way, if the color difference of the local area between the second image and the third image is greater than the fourth threshold, it can be said that the screen to be tested is a defective product, which is beneficial to improve the test accuracy.

[0175] Optionally, the above method also includes: acquiring third data and fourth data; the third data is data presented by the screen to be tested when the fourth image is displayed on the screen to be tested and the screen to be tested has not been subjected to an electric field; the fourth data is data presented by the screen to be tested after the fourth image is displayed on the screen to be tested and the screen to be tested has been subjected to an electric field application for a first period of time, and the brightness and / or grayscale of the fourth image are different from those of the first image; based on the difference between the third data and the fourth data, obtaining a second test result of the screen to be tested; and based on whether the first test result and the second test result are the same, obtaining a third test result of the screen to be tested.

[0176] The brightness and / or grayscale of the fourth image is different from that of the first image. For example, the first image may be a low-brightness, low-grayscale image, and the fourth image may be a medium-brightness, medium-grayscale image. Alternatively, the first image may be a medium-brightness, medium-grayscale image, and the fourth image may be a high-brightness, high-grayscale image. The second test result is used to indicate whether the screen to be tested is a qualified product, so the second test result may be that the screen to be tested is a defective product, or the second test result may be that the screen to be tested is a qualified product.

[0177] The first test result and the second test result are the same, which may include two situations. One situation is that the first test result and the second test result both indicate that the screen to be tested is a qualified product. The other situation is that the first test result and the second test result both indicate that the screen to be tested is a defective product.

[0178] The first test result and the second test result are different, which may include two situations. One situation is: the first test result is that the screen to be tested is a defective product, and the second test result is that the screen to be tested is a qualified product. Another situation is: the first test result is that the screen to be tested is a qualified product, and the second test result is that the screen to be tested is a defective product.

[0179] According to whether the first test result and the second test result are the same, a third test result of the screen to be tested is obtained. In this way, multiple test results are obtained through different images, and the final result is determined through multiple test results, which is conducive to improving the test accuracy.

[0180] Optionally, based on whether the first test result and the second test result are the same, a third test result of the screen to be tested is obtained, including: when the first test result and the second test result are the same, the third test result is the same as the first test result; or, when the first test result and the second test result are different, the third test result is that the screen to be tested is a defective product.

[0181] If the first test result and the second test result are the same, it can be said that the probability of the first test result being misdetected is small, and the third test result can be the same as the first test result. For example, if the first test result and the second test result are the same, and both of them show that the screen to be tested is a defective product, then the third test result shows that the screen to be tested is a defective product. If the first test result and the second test result are the same, and both of them show that the screen to be tested is a qualified product, then the third test result shows that the screen to be tested is a qualified product.

[0182] The first test result is different from the second test result, which means that one of the test results shows that the screen to be tested is defective, and the third test result shows that the screen to be tested is defective. In this way, determining the final result through multiple test results is conducive to improving the test accuracy.

[0183] Optionally, the above method also includes: acquiring fifth data and sixth data; the fifth data is the data presented by the screen to be tested when the fifth image is displayed on the screen to be tested and the screen to be tested has not been subjected to an electric field; the sixth data is the data presented by the screen to be tested after the fifth image is displayed on the screen to be tested and the screen to be tested has been subjected to an electric field for a first period of time, the brightness and / or grayscale of the fifth image are different from those of the fourth image, and the brightness and / or grayscale of the fifth image are different from those of the first image; according to the difference between the fifth data and the sixth data, obtaining a fourth test result of the screen to be tested; and according to whether the fourth test result is the same as the third test result, obtaining a fifth test result of the screen to be tested.

[0184] The fifth image is different from the fourth image in brightness and / or grayscale, and the fifth image is different from the first image in brightness and / or grayscale. For example, the first image may be a low-brightness, low-grayscale image, the fourth image may be a medium-brightness, medium-grayscale image, and the fifth image may be a high-brightness, high-grayscale image. Alternatively, the first image may be a medium-brightness, medium-grayscale image, the fourth image may be a high-brightness, high-grayscale image, and the fifth image may be a low-brightness, low-grayscale image. The fourth test result is used to indicate whether the screen to be tested is a qualified product, so the second test result may be that the screen to be tested is a defective product, or the fourth test result may be that the screen to be tested is a qualified product.

[0185] The fourth test result is the same as the third test result, which may include two situations. One situation is that the fourth test result and the third test result both indicate that the screen to be tested is a qualified product. The other situation is that the fourth test result and the third test result both indicate that the screen to be tested is a defective product.

[0186] The fourth test result is different from the third test result, and may include two situations. One situation is: the fourth test result is that the screen to be tested is a defective product, and the third test result is that the screen to be tested is a qualified product. Another situation is: the fourth test result is that the screen to be tested is a qualified product, and the third test result is that the screen to be tested is a defective product.

[0187] The fifth test result of the screen to be tested is obtained according to whether the fourth test result is the same as the third test result. In this way, more test results are obtained through more images, and the final result is determined through more test results, which is conducive to improving the test accuracy and reducing the probability of false detection.

[0188] Optionally, based on whether the fourth test result is the same as the third test result, a fifth test result of the screen to be tested is obtained, including: when the fourth test result is the same as the third test result, the fifth test result is the same as the third test result; or, when the fourth test result is different from the third test result, the fifth test result is that the screen to be tested is a defective product.

[0189] The fourth test result is the same as the third test result, which means that the first test result, the second test result and the fourth test result are the same, and the probability of false detection is small. The fifth test result can be the same as the third test result. The fourth test result is different from the thirteenth test result, which means that one of the test results is that the screen to be tested is a defective product, and the fifth test result is that the screen to be tested is a defective product. In this way, the final result is determined by more test results, which is conducive to improving the test accuracy and reducing the probability of false detection.

[0190] It should be noted that the module names involved in the embodiments of the present application can be defined as other names as long as the functions of each module can be achieved, and there is no specific restriction on the names of the modules.

[0191] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in the embodiments of the present application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0192] The screen test method of the embodiment of the present application has been described above, and the device for performing the above screen test provided by the embodiment of the present application is described below. Those skilled in the art can understand that the method and the device can be combined and referenced with each other, and the relevant device provided by the embodiment of the present application can perform the steps in the above screen test method.

[0193] In order to achieve the above functions, the device for implementing the screen testing method includes hardware structures and / or software modules corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the method steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0194] The embodiment of the present application can divide the functional modules of the device for implementing the screen testing method according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0195] like Fig.11 A schematic diagram of the structure of a chip provided in an embodiment of the present application. The chip 110 includes one or more (including two) processors 1101 , a communication line 1102 , a communication interface 1103 and a memory 1104 .

[0196] In some implementations, the memory 1104 stores the following elements: executable modules or data structures, or a subset thereof, or an extended set thereof.

[0197] The method performed by the control device or electronic device described in the above embodiment of the present application can be applied to the processor 1101, or implemented by the processor 1101. The processor 1101 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps performed by the control device or electronic device in the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 1101. The above-mentioned processor 1101 can be a general-purpose processor (for example, a microprocessor or a conventional processor), a digital signal processor (digital signal processing, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), a field-programmable gate array (field-programmable gate array, FPGA) or other programmable logic devices, discrete gates, transistor logic devices or discrete hardware components. The processor 1101 can implement or execute the methods, steps and logic block diagrams performed by the disclosed control device or electronic device in the embodiment of the present application.

[0198] The steps performed by the control device or electronic device disclosed in the embodiments of the present application can be directly embodied as being performed by a hardware decoding processor, or can be performed by a combination of hardware and software modules in the decoding processor. Among them, the software module can be located in a mature storage medium in the art such as a random access memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable read only memory (EEPROM). The storage medium is located in the memory 1104, and the processor 1101 reads the information in the memory 1104, and completes the steps performed by the above-mentioned control device or electronic device in combination with its hardware.

[0199] The processor 1101 , the memory 1104 , and the communication interface 1103 may communicate with each other via the communication line 1102 .

[0200] In the above embodiments, the instructions stored in the memory for execution by the processor may be implemented in the form of a computer program product, wherein the computer program product may be pre-written in the memory, or may be downloaded and installed in the memory in the form of software.

[0201] The present application embodiment also provides a computer program product including one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a server or data center that includes one or more available media integrated. For example, the available medium may include a magnetic medium (e.g., a floppy disk, a hard disk or a tape), an optical medium (e.g., a digital versatile disc (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)), etc.

[0202] The present application also provides a computer-readable storage medium. The methods described in the above embodiments can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. Computer-readable media may include computer storage media and communication media, and may also include any medium that can transfer a computer program from one place to another. The storage medium may be any target medium that can be accessed by a computer.

[0203] As a possible design, the computer readable medium may include a compact disc read-only memory (CD-ROM), RAM, ROM, EEPROM or other optical disc storage; the computer readable medium may include a magnetic disk storage or other magnetic disk storage device. Moreover, any connection line may also be appropriately referred to as a computer readable medium. For example, if the software is transmitted from a website, server or other remote source using a coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology (such as infrared, radio and microwave), the coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of medium. Disk and disc as used herein include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks usually reproduce data magnetically, while optical discs reproduce data optically using lasers.

[0204] The embodiments of the present application are described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processing unit of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processing unit of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

Claims

1. A screen testing method, characterized in that: The invention is applied to a test system including an electric field applying device and a screen to be tested, wherein the electric field applying device includes a first conductor and a second conductor arranged opposite to each other, and when the first conductor and the second conductor are energized respectively, an electric field is formed between the first conductor and the second conductor, and when the screen to be tested is set in the electric field between the first conductor and the second conductor, electric charges are conducted from the surface of the screen to be tested to the inside of the screen to be tested; The method comprises: Acquire first data and second data; the first data is data presented by the screen to be tested when a first image is displayed on the screen to be tested and the screen to be tested has not been subjected to the electric field applied by the electric field applying device; the second data is data presented by the screen to be tested after the first image is displayed on the screen to be tested and the screen to be tested has been subjected to the electric field applied for a first time period; A first test result of the screen to be tested is obtained according to a difference between the first data and the second data.

2. The method according to claim 1, characterized in that: The first conductor contacts the surface of the screen to be tested, and the contact area between the first conductor and the screen to be tested is smaller than the surface area of ​​the screen to be tested; the second conductor contacts the back side of the screen to be tested, and is used to support the screen to be tested.

3. The method according to claim 2, characterized in that The first conductor is equidistant from the edge of the screen to be tested.

4. The method according to any one of claims 1 to 3, characterized in that The first data includes a first power supply voltage of the screen to be tested, a first power supply current of the screen to be tested, and / or a first power supply power of the screen to be tested, and the second data includes a second power supply voltage of the screen to be tested, a second power supply current of the screen to be tested, and / or a second power supply power of the screen to be tested; When the difference between the first data and the second data satisfies one or more of the following conditions, the first test result of the screen to be tested is that the screen to be tested is a defective product: A difference between the first supply voltage and the second supply voltage is greater than or equal to a first threshold; The difference between the first supply current and the second supply current is greater than or equal to a second threshold; or, A difference between the first supply power and the second supply power is greater than or equal to a third threshold; When the difference between the first data and the second data satisfies one or more of the following conditions, the first test result of the screen to be tested is that the screen to be tested is a qualified product: The difference between the first supply voltage and the second supply voltage is less than the first threshold; The difference between the first supply current and the second supply current is less than the second threshold; or, A difference between the first power supply and the second power supply is smaller than the third threshold.

5. The method according to any one of claims 1 to 3, characterized in that The first data includes a second image, the second image is an image displayed on the screen to be tested when the first image is displayed on the screen to be tested and the screen to be tested has not been subjected to the application of the electric field, and the second data includes a third image, the third image is an image displayed on the screen to be tested when the first image is displayed on the screen to be tested and the screen to be tested has been subjected to the application of the electric field for the first duration; The obtaining a first test result of the screen to be tested according to the difference between the first data and the second data includes: When the color difference between the second image and the third image is greater than or equal to a fourth threshold, a first test result of the screen to be tested is obtained, that is, the screen to be tested is a defective product; or, When the color difference between the second image and the third image is less than the fourth threshold, a first test result of the screen to be tested is obtained, that is, the screen to be tested is a qualified product.

6. The method according to claim 5, characterized in that The testing system further comprises a photographing device, and the second image and the third image are acquired from the photographing device; The photographing device is used to photograph the screen to be tested to obtain the second image when the first image is displayed on the screen to be tested and the screen to be tested has not been subjected to the application of the electric field; The device is used for photographing the screen to be tested to obtain the third image when the first image is displayed on the screen to be tested and the screen to be tested is subjected to the electric field for the first time period.

7. The method according to claim 5 or 6, characterized in that: The step of obtaining a first test result of the screen to be tested that the screen to be tested is a defective product when the color difference between the second image and the third image is greater than or equal to a fourth threshold value comprises: When the color difference between the first area in the second image and the second area in the third image is greater than or equal to the fourth threshold, the first test result of the screen to be tested is that the screen to be tested is a defective product, and the position of the first area in the second image is the same as the position of the second area in the third image.

8. The method according to any one of claims 1 to 7, characterized in that The method further comprises: Acquire third data and fourth data; the third data is data presented by the screen to be tested when the fourth image is displayed on the screen to be tested and the screen to be tested has not been subjected to the application of the electric field; the fourth data is data presented by the screen to be tested when the fourth image is displayed on the screen to be tested and the screen to be tested has been subjected to the application of the electric field for a first time period, and the brightness and / or grayscale of the fourth image are different from those of the first image; Obtaining a second test result of the screen to be tested according to a difference between the third data and the fourth data; A third test result of the screen to be tested is obtained according to whether the first test result is the same as the second test result.

9. The method according to claim 8, characterized in that The obtaining, according to whether the first test result and the second test result are the same, a third test result of the screen to be tested comprises: When the first test result is the same as the second test result, the third test result is the same as the first test result; or, When the first test result is different from the second test result, the third test result is that the screen to be tested is a defective product.

10. The method according to claim 8 or 9, characterized in that: The method further comprises: Acquire fifth data and sixth data; the fifth data is data presented by the screen to be tested when the fifth image is displayed on the screen to be tested and the screen to be tested has not been subjected to the application of the electric field; the sixth data is data presented by the screen to be tested when the fifth image is displayed on the screen to be tested and the screen to be tested is subjected to the application of the electric field for the first duration, the fifth image is different from the fourth image in brightness and / or grayscale, and the fifth image is different from the first image in brightness and / or grayscale; Obtaining a fourth test result of the screen to be tested according to a difference between the fifth data and the sixth data; A fifth test result of the screen to be tested is obtained according to whether the fourth test result is the same as the third test result.

11. The method according to claim 10, characterized in that The obtaining a fifth test result of the screen to be tested according to whether the fourth test result is the same as the third test result comprises: In the case where the fourth test result is the same as the third test result, the fifth test result is the same as the third test result; or, When the fourth test result is different from the third test result, the fifth test result is that the screen to be tested is a defective product.

12. A screen testing system, characterized in that: include: An electric field applying device, a screen to be tested, and a control device, wherein the electric field applying device comprises a first conductor and a second conductor arranged opposite to each other, when the first conductor and the second conductor are energized respectively, an electric field is formed between the first conductor and the second conductor, and when the screen to be tested is set in the electric field between the first conductor and the second conductor, electric charges are conducted from the surface of the screen to be tested to the inside of the screen to be tested; The control device is used to obtain a first test result of the screen to be tested according to the difference between the first data and the second data; The first data is data presented by the screen to be tested when a first image is displayed on the screen to be tested and the screen to be tested has not been subjected to an electric field applied by the electric field applying device; The second data is data presented by the screen to be tested after the first image is displayed on the screen to be tested and the screen to be tested is subjected to the electric field applied for a first time period.

13. The system according to claim 12, characterized in that The first conductor contacts the surface of the screen to be tested, and the contact area between the first conductor and the screen to be tested is smaller than the surface area of ​​the screen to be tested; the second conductor contacts the back side of the screen to be tested, and is used to support the screen to be tested.

14. The system according to claim 13, characterized in that The first conductor is equidistant from the edge of the screen to be tested.

15. The system according to any one of claims 12 to 14, characterized in that The test system also includes a camera; The photographing device is used to photograph the screen to be tested to obtain a second image when the first image is displayed on the screen to be tested and the screen to be tested has not been subjected to the electric field application; And when the first image is displayed on the screen to be tested and the screen to be tested is subjected to the electric field for the first time period, the screen to be tested is photographed to obtain a third image; and the second image and the third image are transmitted to the control device, wherein the first data includes the second image and the second data includes the third image.

16. The system according to any one of claims 12 to 14, characterized in that The screen testing system also includes a screen lighting device; The screen lighting device is used to display the first image for the screen to be tested, and to obtain the first data and the second data, and to transmit the first data and the second data to the control device, wherein the first data includes a first power supply voltage of the screen to be tested, a first power supply current of the screen to be tested, and / or a first power supply power of the screen to be tested, and the second data includes a second power supply voltage of the screen to be tested, a second power supply current of the screen to be tested, and / or a second power supply power of the screen to be tested.

17. An electronic device, characterized in that: include: Processor and memory; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the electronic device executes the method according to any one of claims 1 to 11, or executes the method executed by the control device according to any one of claims 12 to 16.

18. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 11 is implemented, or the method according to any one of claims 12 to 16 is executed by a control device.

19. A computer program product, characterized in that The invention comprises a computer program, which, when being executed, enables a computer to execute the method according to any one of claims 1 to 11, or to execute the method executed by the control device according to any one of claims 12 to 16.

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