Method, device and system for lightening display module in production measurement process

Abstract

The invention relates to the technical field of testing, in particular to a method, a device and a system for lightening a display module in a production testing process. The method comprises the following steps: respectively acquiring change diagrams of current along with time in the process of displaying red, green and blue background colors by a display module; according to all the change diagrams, determining instantaneous peak current and current abrupt change duration when each background color is displayed; lightening the first number of display modules according to the instantaneous peak current and the current abrupt change duration during display of each background color; selecting a second number of display modules according to the change period of the output power of the power supply equipment, and lightening the second number of display modules; updating the instantaneous peak current and the current abrupt change duration when each background color is displayed; and repeatedly selecting a second number of display modules for lightening until the yield measurement process is finished. According to the invention, the problem of increasing the detection efficiency by selecting a reasonable number and simultaneously carrying out production detection on a plurality of display modules is solved.

Description

Technical Field

[0001] The present invention relates to the field of testing technology, and in particular to a method, device and system for lighting up a display module during a production test process. Background Art

[0002] The display module needs to undergo screen quality inspection before leaving the factory to ensure its quality and performance. Among them, bad pixel detection is an important inspection link. Bad pixel detection is the process of identifying pixel defects in the display module. It usually uses an image acquisition device to capture the display image of the display module against a pure color background such as red, green, blue, white, and black, and then conducts defect analysis.

[0003] At present, the production test method for bad pixel detection of display modules generally adopts a fixed color lighting sequence to detect bad pixels of each display module. Generally speaking, the bad pixel detection of display modules is performed one by one.

[0004] In order to increase the efficiency of detection, multiple display modules can be used to detect bad pixels at the same time. However, multiple display modules are generally connected to power supply equipment in parallel. If the LED lights of multiple display modules are lit at the same time, the instantaneous peak current will be very high for the power supply equipment, which is easy to damage the power supply equipment. The instantaneous peak current is too high and may also break down the LED lights of the display module and damage the display module. How to select a reasonable number of simultaneous production tests on multiple display modules to speed up the detection efficiency is a problem that needs to be solved. Summary of the invention

[0005] Based on this, it is necessary to provide a method, device and system for lighting up a display module during a production test process to address the above-mentioned problems.

[0006] The embodiment of the present invention is implemented as follows: a method for lighting up a display module during a production test, wherein the method for lighting up a display module during a production test comprises:

[0007] S101, respectively obtaining a graph of current variation over time when the display module displays three background colors of red, green and blue;

[0008] S102, determining the instantaneous peak current and the current mutation duration when each background color is displayed according to all the change graphs;

[0009] S103, lighting up a first number of display modules according to the instantaneous peak current and the duration of the current mutation when each background color is displayed;

[0010] S104, selecting a second number of display modules according to a variation cycle of the output power of the power supply device;

[0011] S105, lighting up a second number of display modules according to a variation cycle of the output power of the power supply device;

[0012] S106, updating the instantaneous peak current and the current mutation duration when each background color is displayed according to the lit display module;

[0013] S107, repeat S104-S106 until the production test process is completed.

[0014] In one embodiment, the present invention provides a lighting device for a display module during a production test process, the lighting device for a display module during a production test process comprising:

[0015] The current change module is used to obtain the current change diagram over time when the display module displays the three background colors of red, green and blue;

[0016] The peak current module is used to determine the instantaneous peak current and the duration of the current mutation when each background color is displayed according to all the change diagrams;

[0017] A first lighting module, used for lighting a first number of display modules according to an instantaneous peak current and a current mutation duration when each background color is displayed;

[0018] A secondary selection module, used for selecting a second number of display modules according to a change cycle of the output power of the power supply device;

[0019] A second lighting module, used to light up a second number of display modules according to a change cycle of the output power of the power supply device;

[0020] The data updating module is used to update the instantaneous peak current and the duration of the current mutation when each background color is displayed according to the lit display module.

[0021] In one of the embodiments, the present invention provides a lighting system for a display module during a production test, the lighting system for a display module during a production test comprising: an image acquisition device, a power supply device, and a computer device;

[0022] The image acquisition device is connected to the computer device and is used to obtain a display image of the display module displaying a background color for production testing;

[0023] The power supply device is connected to the computer device and is used to provide power to the display module;

[0024] The computer device is used to execute the steps of the method for lighting up the display module during the production test process.

[0025] The embodiment of the present invention provides a method for lighting up a display module during a production test, by respectively obtaining a graph of the current changing over time when the display module displays three background colors of red, green and blue; determining the instantaneous peak current and the duration of the current mutation when each background color is displayed according to all the change graphs; lighting up a first number of display modules according to the instantaneous peak current and the duration of the current mutation when each background color is displayed; selecting a second number of display modules according to the change cycle of the output power of the power supply device; lighting up the second number of display modules according to the change cycle of the output power of the power supply device; updating the instantaneous peak current and the duration of the current mutation when each background color is displayed according to the lit display modules; repeatedly selecting the second number of display modules to light up until the production test process is completed. The present invention first selects the first number of display modules according to the instantaneous peak current when displaying different background colors, then lights up the selected first number of display modules according to the duration of the current mutation, and then repeats the step of selecting the second number of display modules according to the change cycle of the output power of the movie device and lights them up until the production test is completed. In this way, multiple display modules can be tested at the same time, but the superimposed instantaneous peak current is guaranteed to remain within the allowable range of the power supply device. When more display modules are selected later, it is determined based on the change cycle of the output power of the power supply device, and the superimposed instantaneous peak current is still kept within the allowable range of the power supply device. This solves the problem of selecting a reasonable number of display modules for simultaneous production testing to speed up detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a flow chart of a method for lighting up a display module during a production test in one embodiment;

[0027] Figure 2 It is a structural block diagram of a lighting device for a display module during a production test in an embodiment;

[0028] Figure 3 A schematic diagram of a lighting system for a display module during a production test in an embodiment;

[0029] Figure 4 FIG. 4 is a block diagram of the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] It is understood that the terms "first", "second", etc. used in the present invention may be used herein to describe various elements, but unless otherwise specified, these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, a first xx script may be referred to as a second xx script, and similarly, a second xx script may be referred to as a first xx script without departing from the scope of the present invention.

[0032] like Figure 1 As shown, in one embodiment, a method for lighting up a display module during a production test is proposed, which may specifically include the following steps:

[0033] S101, respectively obtaining a graph of current variation over time when the display module displays three background colors of red, green and blue;

[0034] S102, determining the instantaneous peak current and the current mutation duration when each background color is displayed according to all the change graphs;

[0035] S103, lighting up a first number of display modules according to the instantaneous peak current and the duration of the current mutation when each background color is displayed;

[0036] S104, selecting a second number of display modules according to a variation cycle of the output power of the power supply device;

[0037] S105, lighting up a second number of display modules according to a variation cycle of the output power of the power supply device;

[0038] S106, updating the instantaneous peak current and the current mutation duration when each background color is displayed according to the lit display module;

[0039] S107, repeat S104-S106 until the production test process is completed.

[0040] In this embodiment, multiple display modules are connected in parallel for production testing at the same time. After being connected to the power supply device, the display modules will not be lit immediately. The display modules connected in parallel to the power supply device are only hardware connections, and lighting up the LED lights on the display modules still requires software control. Therefore, the number of display modules connected in parallel to the power supply device and the number of display modules that are simultaneously undergoing production testing are not the same concept.

[0041] In this embodiment, the bad pixel production test of the display module is carried out under five background colors, namely red, green, blue, white and black. The red background color is the result of the red LED lamp of the display module being lit, the green background color is the result of the green LED lamp of the display module being lit, the blue background color is the result of the blue LED lamp of the display module being lit, the white background color is the result of the red, green and blue LED lamps of the display module being lit at the same time, and the black color is the result of all the LEDs of the display module not being lit. Therefore, here, it is only necessary to obtain the current change over time graph in the process of the three background colors of red, green and blue.

[0042] In this embodiment, the LED lamp will generate an instantaneous peak current at the moment of startup, which is generally several times the normal current. If multiple display modules are tested together, in order to ensure the stability of the input voltage of the display modules, the display modules are generally connected in parallel. The more display modules are tested at the same time, the greater the superposition of the instantaneous peak current may be. Although there is a protection circuit, the protection circuit also has its limits, so the best way is to set the lighting process of the display module to avoid the superposition of the instantaneous peak currents generated at the same time.

[0043] In this embodiment, the duration of the current mutation is the time from the beginning to the end of the abnormal current generated by the LED lamp at the moment of startup, and the maximum value is the instantaneous peak current.

[0044] In this embodiment, the power supply device is a device that provides electrical energy to the display module, and is generally a constant voltage source, such as a DC voltage tester.

[0045] In this embodiment, S101-S102, it is necessary to first select a display module for production testing. Of course, several display modules can also be selected for production testing, such as 3-5, and the instantaneous peak current and the duration of the current mutation when each background color is displayed are determined by calculating the average value, and the instantaneous peak current and the duration of the current mutation when each background color is displayed can even be obtained through historical data. In S106, the instantaneous peak current and the duration of the current mutation when each background color is displayed are updated according to the data of the display modules that have been tested during this production test, such as by calculating the average value. Specifically, it can be based on the data of all display modules that have been tested, or based on a certain number of display modules that have been tested, for example, every 100 display modules are tested, and the instantaneous peak current and the duration of the current mutation when each background color is displayed are updated according to the data of the first 100 display modules. Of course, the data of the display modules that failed the production test can be excluded in this process.

[0046] The embodiment of the present invention provides a method for lighting up a display module during a production test, by respectively obtaining a graph of the current changing over time when the display module displays three background colors of red, green and blue; determining the instantaneous peak current and the duration of the current mutation when each background color is displayed according to all the change graphs; lighting up a first number of display modules according to the instantaneous peak current and the duration of the current mutation when each background color is displayed; selecting a second number of display modules according to the change cycle of the output power of the power supply device; lighting up the second number of display modules according to the change cycle of the output power of the power supply device; updating the instantaneous peak current and the duration of the current mutation when each background color is displayed according to the lit display modules; repeatedly selecting the second number of display modules to light up until the production test process is completed. The present invention first selects the first number of display modules according to the instantaneous peak current when displaying different background colors, then lights up the selected first number of display modules according to the duration of the current mutation, and then repeats the step of selecting the second number of display modules according to the change cycle of the output power of the movie device and lights them up until the production test is completed. In this way, multiple display modules can be tested at the same time, but the superimposed instantaneous peak current is guaranteed to remain within the allowable range of the power supply device. When more display modules are selected later, it is determined based on the change cycle of the output power of the power supply device, and the superimposed instantaneous peak current is still kept within the allowable range of the power supply device. This solves the problem of selecting a reasonable number of display modules for simultaneous production testing to speed up detection efficiency.

[0047] In one embodiment, respectively obtaining the graphs of current changes over time when the display module displays four background colors of red, green and blue, includes:

[0048] Select a display module and light up the red LED light of the display module to display a red background color;

[0049] Get a graph showing the current changing over time with a red background color;

[0050] Turn off the red LED light of the display module, and turn on the green LED light of the display module to display a green background color;

[0051] Get a graph showing the current changing over time with a green background color;

[0052] Turn off the green LED light of the display module, and turn on the blue LED light of the display module to display a blue background color;

[0053] Obtain a graph showing the current versus time for a blue background.

[0054] In this embodiment, since the white background color is the red, green and blue LED lights that are lit at the same time, there is no need to calculate the current change over time graph during the blue background color process. When a white background color is required, the red, green and blue LED lights can be lit in sequence to avoid the superposition of currents caused by the simultaneous appearance of three instantaneous peak currents.

[0055] In this embodiment, the reason why the previously lit LED lamp is turned off when the color of the LED lamp is switched is that the LED lamp needs to continuously provide current when it is lit. If it is not turned off, the current of the subsequent change diagram needs to be subtracted from the current corresponding to the stable state of the already lit LED lamp. In order to make the change diagram directly represent the current situation when the corresponding LED lamp is turned on, turning off the previously lit LED lamp is the simplest method.

[0056] In this embodiment, the variation diagram may be obtained from the power supply device.

[0057] In one embodiment, determining the instantaneous peak current and the current mutation duration when each background color is displayed according to all the change graphs respectively includes:

[0058] For each change graph, obtain a scatter plot corresponding to the change curve in the change graph;

[0059] Get all the coordinate points in the scatter plot and determine the value of each coordinate point on the vertical axis;

[0060] The coordinate point A with the largest value on the vertical axis is recorded as the instantaneous peak current when the background color corresponding to the change graph is displayed;

[0061] Deviation judgment is performed from coordinate point A to the coordinate points on both sides to determine the duration of the current mutation when the background color corresponding to the change diagram is displayed.

[0062] In this embodiment, the change curve in the change graph is a continuous curve, which is essentially a fitting curve of the scatter plot.

[0063] In this embodiment, in the variation diagram, the horizontal axis represents time, and the vertical axis represents current.

[0064] In this embodiment, the instantaneous peak current is generally several times the working current, so the coordinate point A with the largest value on the vertical axis must be the coordinate point corresponding to the instantaneous peak current.

[0065] In one embodiment, the deviation judgment is performed from the coordinate point A to the coordinate points on both sides to determine the duration of the current mutation when the background color corresponding to the change graph is displayed, including:

[0066] S401, for any side of coordinate point A, sort the coordinate points on that side from small to large according to the distance from coordinate point A on the horizontal axis;

[0067] S402, by x0-x i Get the difference between each coordinate point in the sorting and coordinate point A;

[0068] S403, select two adjacent coordinate points in sequence according to the sorting order, and determine c i / c i+1 Is it greater than or equal to the preset value? If so, the coordinate point with the higher order among the two adjacent coordinate points is recorded as the interval point;

[0069] S404, if c j / c j+1 is less than the preset value, then repeat S401-S103 until c j / c j+1 Greater than or equal to the preset value;

[0070] S405, determining the duration of the current mutation when the background color corresponding to the change graph is displayed according to the values ​​of the interval points on both sides of the coordinate point A on the horizontal axis;

[0071] Among them, x0 is the value of coordinate point A on the horizontal axis, x i is the value of the i-th coordinate point on the horizontal axis in the sorting, i is the sequence number of the coordinate point in the sorting, i starts from 1, c i is the difference between the i-th coordinate point in the sort and the coordinate point A.

[0072] In this embodiment, x0 must be the maximum value, so x0-x i The value of must be a positive number.

[0073] In this embodiment, the current changes smoothly during the time other than the duration of the current mutation. Therefore, if c i / c i+1 If it is greater than or equal to the preset value, it means that the change of two adjacent coordinate points is not obvious, that is, the start time or end time of the current mutation duration. The preset value can be set to any value between 0.8 and 0.9.

[0074] In one embodiment, lighting up a first number of display modules according to the instantaneous peak current and the duration of the current mutation when each background color is displayed includes:

[0075] Get the rated output current I of the power supply device;

[0076] The value of the first quantity is obtained by 3*I / (i1+i2+i3);

[0077] Selecting a first number of display modules from display modules that have not been tested;

[0078] By t0+t maxGet the first execution duration;

[0079] From t1+t2+t3+t0-t min Get the second execution time;

[0080] In selecting the first number of display modules, every three display modules are set as a group;

[0081] For each group of three display modules, lighting up the three display modules according to the first execution time and the second execution time;

[0082] Where i1 is the instantaneous peak current when displayed with a red background color, i2 is the instantaneous peak current when displayed with a green background color, i3 is the instantaneous peak current when displayed with a blue background color, t0 is the preset acquisition time, t1 is the duration of the current mutation when displayed with a red background color, t2 is the duration of the current mutation when displayed with a green background color, t3 is the duration of the current mutation when displayed with a blue background color, t min is the minimum duration of the current mutation among t1, t2 and t3, t max is the maximum current mutation duration among t1, t2 and t3.

[0083] In this embodiment, since the instantaneous peak currents when different background colors are displayed are not necessarily the same, the instantaneous peak current when a certain background color is displayed cannot be used for calculation when calculating the value of the first quantity. It can be imagined that each display module needs to pass through the three background colors of red, green and blue. If three display modules are grouped as a group, and the display modules in the same group display the red, green and blue background colors respectively, then the value of the instantaneous peak current superimposed by the three display modules is determined. When the three background colors in the same group are rotated, the same instantaneous peak current is still superimposed. Therefore, 3*I / (i1+i2+i3) is used to calculate the value of the first quantity, and the display module is lit up in groups of three display modules as the minimum unit.

[0084] In this embodiment, the preset acquisition time is the time taken by the image acquisition device to acquire and display an image. The preset acquisition time may be set to 0.5s.

[0085] In this embodiment, the first execution duration is the execution time of any single color of the red, green and blue background colors. The three background colors of red, green and blue require three first execution durations. The second execution duration is the execution time of the white background color. The three background colors of red, green and blue are lit up in sequence. In theory, it should be the sum of the current mutation durations when the three background colors are displayed plus the preset acquisition time. However, in reality, the display module tests the red, green and blue background colors before testing the white background color. Generally speaking, the display module also lights up any one of the three colors of red, green and blue LED lights, so one current mutation duration can be subtracted. Since it is impossible to determine which background color the display module is displaying, the smallest of the three current mutation durations is selected for subtraction.

[0086] In one embodiment, lighting up the three display modules according to the first execution duration and the second execution duration includes:

[0087] S601, every first execution time, controlling the three display modules to light up the red, green and blue LED lights respectively so that the three display modules display the red, green and blue background colors respectively;

[0088] S602, selecting any one of the three display modules, determining whether the three colors of LED lights of the display module have all been turned on, and if so, turning on all the LED lights in sequence according to the reverse order of turning on the LED lights of the display module within the second execution time;

[0089] S603, if the three colors of LED lights of the display module have not all been lit, turn off the lit LED lights of the display module, select an LED light of one color from the unlit LED lights and execute S601-S602.

[0090] In this embodiment, for example, display module 1, display module 2, and display module 3 are a group. Then, in the first first execution duration, display module 1 displays a red background color, display module 2 displays a green background color, and display module 3 displays a blue background color. At this time, S602 is executed to determine that the three colors of LED lights of any one of the three display modules have not all been lit. If display module 1 is selected, then the only two unlit LED lights of display module 1 are green and blue. If green is selected, then in the second first execution duration, display module 1 displays a green background color, display module 2 displays a blue background color, and display module 3 displays a red background color. At this time, S602 is executed again to determine that display module 1 has been turned on according to the LED lights of the three colors. The condition that the three colors of LED lights have not been lit is met. At this time, the display module 1 has not lit up the LED light and only the blue one is displayed. Therefore, in the third first execution time, the display module 1 displays the blue background color, the display module 2 displays the red background color, and the display module 3 displays the green background color. At this time, S602 is executed again, and the result is that the three colors of LED lights of the display module 1 have all been lit up. In the second execution time, all LED lights are lit in sequence according to the color sequence of the LED lights lit by the display module. The lighting sequence of the LED lights of the display module 1 is red, green and blue, so the inversion sequence is blue, green and red. At this time, the blue LED light of the display module 1 has been lit up, so you only need to light up the green LED light and the red LED light in sequence.

[0091] In this embodiment, if S603 is executed, the process of S601-S602 is repeatedly executed until the three colors of LED lights of any one of the three display modules are all lit up, and then the repetitive process is jumped out.

[0092] In one embodiment, selecting the second number of display modules according to the variation cycle of the output power of the power supply device includes:

[0093] Obtain the change cycle of the output power of the power supply device;

[0094] Determining the stable output power of the power supply device during a variation cycle of the output power of the power supply device;

[0095] The remaining power P2 is obtained from P0-P1;

[0096] The value of the second quantity is obtained by 3*P2 / ((i1+i2+i3)*U);

[0097] Selecting a second number of display modules from the display modules that have not been tested;

[0098] Among them, P0 is the rated power of the power supply equipment, P1 is the stable output power of the power supply equipment, and U is the output voltage of the power supply equipment.

[0099] In this embodiment, the output power of the power supply device is the product of the output voltage and the output current. Since it is a constant voltage device, the output voltage remains unchanged. Although the output current is related to the number of display modules that are being tested at the same time, when an instantaneous peak current appears, the output power of the power supply device will still increase instantly. When the LED lamp is normally lit, the output current at this time is the rated current of the LED lamp. The change cycle of the output power of the power supply device refers to the duration of the process in which the display module displays the four background colors of red, green, blue and white. Generally speaking, after the second execution time, that is, the white background color is displayed and the display image is collected, all LED lights are turned off, which means that the production test of the display module is completed, and the connection can be disconnected from the hardware level to replace other display modules to be tested. The change cycle of the output power of the power supply device is generally a fixed duration, which can be synchronously determined in the process of using the first display module to obtain the current change diagram over time in the process of the display module displaying the three background colors of red, green and blue. The change cycle of the output power of the power supply device.

[0100] In this embodiment, when the instantaneous peak current returns to the rated working current of the LED lamp after passing through, the output power of the power supply device at this time is the stable output power of the power supply device, and the output power of the power supply device within the preset acquisition time can be regarded as the stable output power of the power supply device. There are many methods to determine the stable output power of the power supply device in the change cycle of the output power of the power supply device, such as using the same method as calculating the duration of the current mutation to calculate the time of the abnormal output power of the power supply device, and then inversely deriving the time period of the stable output power of the power supply device and the stable output power of the power supply device.

[0101] In one embodiment, lighting up the second number of display modules according to the variation cycle of the output power of the power supply device includes:

[0102] Obtain the change cycle of the output power of the power supply device;

[0103] Determine a time period B in which the stable output power of the power supply device is located during a change cycle of the output power of the power supply device;

[0104] Determine the idle time period of the output power variation cycle of each power supply device according to the position of each time period B in the output power variation cycle of the power supply device;

[0105] In selecting the second number of display modules, every three display modules are set as a group;

[0106] For each group of three display modules, the three display modules are lit up according to the idle time of the variation cycle of the output power of each power supply device.

[0107] In this embodiment, time period B is essentially a preset acquisition time. During the preset acquisition time, the output current of the power supply device is stable, so the second number of display modules can be tested during this time, making full use of the spare time to increase the efficiency of the production test.

[0108] In this embodiment, the process of lighting up the three display modules according to the idle time of the output power variation cycle of each power supply device is the same as the step of lighting up the three display modules according to the first execution duration and the second execution duration in the first number of display modules. Generally speaking, the duration of the current mutation is extremely short, usually between a few milliseconds and tens of milliseconds, and the preset acquisition time is much longer than this time, so the idle time of the output power variation cycle of the power supply device is completely sufficient to survive the duration of the current mutation when the LED lights of the second number of display modules are lit. Of course, the second number of display modules also lights up the three display modules according to the first execution duration and the second execution duration, except that the time when the first number of display modules and the second number of display modules start to light up the LED lights is staggered.

[0109] like Figure 2 As shown, in one embodiment, a device for lighting a display module during a production test is provided, which may specifically include:

[0110] The current change module is used to obtain the current change diagram over time when the display module displays the three background colors of red, green and blue;

[0111] The peak current module is used to determine the instantaneous peak current and the duration of the current mutation when each background color is displayed according to all the change diagrams;

[0112] A first lighting module, used for lighting a first number of display modules according to an instantaneous peak current and a current mutation duration when each background color is displayed;

[0113] A secondary selection module, used for selecting a second number of display modules according to a change cycle of the output power of the power supply device;

[0114] A second lighting module, used to light up a second number of display modules according to a change cycle of the output power of the power supply device;

[0115] The data updating module is used to update the instantaneous peak current and the duration of the current mutation when each background color is displayed according to the lit display module.

[0116] In this embodiment, each module of the lighting device of the display module in the production test process is modularized in the method part of the present invention. For the specific explanation of each module, please refer to the corresponding content of the method part of the present invention, and the embodiment of the present invention will not be repeated here.

[0117] like Figure 3 As shown, in one embodiment, a lighting system for a display module during a production test is provided, which may specifically include: an image acquisition device, a power supply device, and a computer device;

[0118] The image acquisition device is connected to the computer device and is used to obtain a display image of the display module displaying a background color for production testing;

[0119] The power supply device is connected to the computer device and is used to provide power to the display module;

[0120] The computer device is used to execute the steps of the method for lighting up the display module during the production test process.

[0121] In this embodiment, the image acquisition device may be a camera or other device.

[0122] In this embodiment, the power supply device provides power to the display module, which is used not only to light up the LED lamp, but also to support other normal operations of the display module. The power supply device also provides power to the image acquisition device.

[0123] In this embodiment, the computer device can be an independent physical server or terminal, or a server cluster composed of multiple physical servers, or a cloud server that provides basic cloud computing services such as cloud servers, cloud databases, cloud storage, and CDN.

[0124] In this embodiment, the computer device is also connected to the display module to control the conduction of the LED light of the display module.

[0125] The lighting system of a display module during a production test provided by an embodiment of the present invention obtains the current change graphs over time during the process of displaying three background colors of red, green and blue by the display module; determines the instantaneous peak current and the current mutation duration when each background color is displayed according to all the change graphs; lights up a first number of display modules according to the instantaneous peak current and the current mutation duration when each background color is displayed; selects a second number of display modules according to the change cycle of the output power of the power supply device; lights up the second number of display modules according to the change cycle of the output power of the power supply device; updates the instantaneous peak current and the current mutation duration when each background color is displayed according to the lit display modules; and repeatedly selects the second number of display modules to light up until the production test process is completed. The present invention first selects the first number of display modules according to the instantaneous peak current when displaying different background colors, then lights up the selected first number of display modules according to the current mutation duration, and then repeats the steps of selecting the second number of display modules according to the change cycle of the output power of the movie device and lights them up until the production test is completed. In this way, multiple display modules can be tested at the same time, but the superimposed instantaneous peak current is guaranteed to remain within the allowable range of the power supply device. When more display modules are selected later, it is determined based on the change cycle of the output power of the power supply device, and the superimposed instantaneous peak current is still kept within the allowable range of the power supply device. This solves the problem of selecting a reasonable number of display modules for simultaneous production testing to speed up detection efficiency.

[0126] Figure 4 FIG. 2 shows an internal structure diagram of a computer device in one embodiment. Figure 4 As shown, the computer device includes a processor, a memory, a network interface, an input device and a display screen connected through a system bus. Among them, the memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the computer device stores an operating system and may also store a computer program. When the computer program is executed by the processor, the processor can implement a method for lighting up a display module during a production test provided by an embodiment of the present invention. The internal memory may also store a computer program. When the computer program is executed by the processor, the processor can execute a method for lighting up a display module during a production test provided by an embodiment of the present invention. The display screen of the computer device may be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device may be a touch layer covering the display screen, or a button, trackball or touchpad provided on the housing of the computer device, or an external keyboard, touchpad or mouse, etc.

[0127] Those skilled in the art will understand that Figure 4The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present invention, and does not constitute a limitation on the computer device to which the solution of the present invention is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0128] In one embodiment, a device for lighting a display module during a production test provided by an embodiment of the present invention can be implemented in the form of a computer program. The computer program can be Figure 4 The computer device shown in the figure is run. The memory of the computer device can store various program modules that constitute the lighting device of the display module in the production test process, for example, Figure 2 The current change module, peak current module, first lighting module, secondary selection module, second lighting module and update data module shown in the figure. The computer program composed of each program module enables the processor to execute the steps of the display module lighting method in the production test process of each embodiment of the present invention described in this specification.

[0129] For example, Figure 4 The computer device shown can be Figure 2 In the production test process shown, the current change module in the lighting device of the display module executes step S101; the computer device can execute step S102 through the peak current module; the computer device can execute step S103 through the first lighting module; the computer device can execute step S104 through the secondary selection module; the computer device can execute step S105 through the second lighting module; the computer device can execute step S106 through the update data module.

[0130] In one embodiment, a computer device is provided, the computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the following steps are implemented:

[0131] S101, respectively obtaining a graph of current variation over time when the display module displays three background colors of red, green and blue;

[0132] S102, determining the instantaneous peak current and the current mutation duration when each background color is displayed according to all the change graphs;

[0133] S103, lighting up a first number of display modules according to the instantaneous peak current and the duration of the current mutation when each background color is displayed;

[0134] S104, selecting a second number of display modules according to a variation cycle of the output power of the power supply device;

[0135] S105, lighting up a second number of display modules according to a variation cycle of the output power of the power supply device;

[0136] S106, updating the instantaneous peak current and the current mutation duration when each background color is displayed according to the lit display module;

[0137] S107, repeat S104-S106 until the production test process is completed.

[0138] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the processor performs the following steps:

[0139] S101, respectively obtaining a graph of current variation over time when the display module displays three background colors of red, green and blue;

[0140] S102, determining the instantaneous peak current and the current mutation duration when each background color is displayed according to all the change graphs;

[0141] S103, lighting up a first number of display modules according to the instantaneous peak current and the duration of the current mutation when each background color is displayed;

[0142] S104, selecting a second number of display modules according to a variation cycle of the output power of the power supply device;

[0143] S105, lighting up a second number of display modules according to a variation cycle of the output power of the power supply device;

[0144] S106, updating the instantaneous peak current and the current mutation duration when each background color is displayed according to the lit display module;

[0145] S107, repeat S104-S106 until the production test process is completed.

[0146] It should be understood that, although each step in the flow chart of each embodiment of the present invention is shown in sequence according to the indication of the arrow, these steps are not necessarily performed in sequence according to the order indicated by the arrow. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be performed in other orders. Moreover, at least a portion of the steps in each embodiment may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and the execution order of these sub-steps or stages is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of other steps or sub-steps or stages of other steps.

[0147] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided by the present invention can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0148] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0149] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A method for lighting up a display module during a production test, characterized in that: The method for lighting up the display module during the production test process includes: S101, respectively obtaining a graph of current variation over time when the display module displays three background colors of red, green and blue; S102, determining the instantaneous peak current and the current mutation duration when each background color is displayed according to all the change graphs; S103, lighting up a first number of display modules according to the instantaneous peak current and the duration of the current mutation when each background color is displayed; S104, selecting a second number of display modules according to a variation cycle of the output power of the power supply device; S105, lighting up a second number of display modules according to a variation cycle of the output power of the power supply device; S106, updating the instantaneous peak current and the current mutation duration when each background color is displayed according to the lit display module; S107, repeat S104-S106 until the production test process is completed.

2. The method for lighting up the display module during the production test process according to claim 1, characterized in that: The obtaining of the graphs of current changes over time when the display module displays four background colors of red, green and blue respectively includes: Select a display module and light up the red LED light of the display module to display a red background color; Get a graph showing the current changing over time with a red background color; Turn off the red LED light of the display module, and turn on the green LED light of the display module to display a green background color; Get a graph showing the current changing over time with a green background color; Turn off the green LED light of the display module, and turn on the blue LED light of the display module to display a blue background color; Obtain a graph showing the current versus time for a blue background.

3. The method for lighting up the display module during the production test process according to claim 1, characterized in that: The method of determining the instantaneous peak current and the current mutation duration when each background color is displayed according to all the change graphs includes: For each change graph, obtain a scatter plot corresponding to the change curve in the change graph; Get all the coordinate points in the scatter plot and determine the value of each coordinate point on the vertical axis; The coordinate point A with the largest value on the vertical axis is recorded as the instantaneous peak current when the background color corresponding to the change graph is displayed; Deviation judgment is performed from coordinate point A to the coordinate points on both sides to determine the duration of the current mutation when the background color corresponding to the change diagram is displayed.

4. The method for lighting up the display module during the production test process according to claim 3, characterized in that: The step of performing deviation judgment from coordinate point A to coordinate points on both sides to determine the duration of the current mutation when the background color corresponding to the change diagram is displayed includes: S401, for any side of coordinate point A, sort the coordinate points on that side from small to large according to the distance from coordinate point A on the horizontal axis; S402, by x0-x i Get the difference between each coordinate point in the sorting and coordinate point A; S403, select two adjacent coordinate points in sequence according to the sorting order, and determine c i / c i+1 Is it greater than or equal to the preset value? If so, the coordinate point with the higher order among the two adjacent coordinate points is recorded as the interval point; S404, if c j / c j+1 is less than the preset value, then repeat S401-S103 until c j / c j+1 Greater than or equal to the preset value; S405, determining the duration of the current mutation when the background color corresponding to the change graph is displayed according to the values ​​of the interval points on both sides of the coordinate point A on the horizontal axis; Among them, x0 is the value of coordinate point A on the horizontal axis, x i is the value of the i-th coordinate point on the horizontal axis in the sorting, i is the sequence number of the coordinate point in the sorting, i starts from 1, c i is the difference between the i-th coordinate point in the sort and the coordinate point A.

5. The method for lighting up the display module during the production test process according to claim 1, characterized in that: The step of lighting up a first number of display modules according to the instantaneous peak current and the duration of the current mutation when each background color is displayed includes: Get the rated output current I of the power supply device; The value of the first quantity is obtained by 3*I / (i1+i2+i3); Selecting a first number of display modules from display modules that have not been tested; By t0+t max Get the first execution duration; From t1+t2+t3+t0-t min Get the second execution time; In selecting the first number of display modules, every three display modules are set as a group; For each group of three display modules, lighting up the three display modules according to the first execution time and the second execution time; Where i1 is the instantaneous peak current when displayed with a red background color, i2 is the instantaneous peak current when displayed with a green background color, i3 is the instantaneous peak current when displayed with a blue background color, t0 is the preset acquisition time, t1 is the duration of the current mutation when displayed with a red background color, t2 is the duration of the current mutation when displayed with a green background color, t3 is the duration of the current mutation when displayed with a blue background color, t min is the minimum duration of the current mutation among t1, t2 and t3, t max is the maximum current mutation duration among t1, t2 and t3.

6. The method for lighting up the display module during the production test process according to claim 5, characterized in that: The lighting up the three display modules according to the first execution duration and the second execution duration includes: S601, every first execution time, controlling the three display modules to light up the red, green and blue LED lights respectively so that the three display modules display the red, green and blue background colors respectively; S602, selecting any one of the three display modules, determining whether the three colors of LED lights of the display module have all been turned on, and if so, turning on all the LED lights in sequence according to the reverse order of turning on the LED lights of the display module within the second execution time; S603, if the three colors of LED lights of the display module have not all been lit, turn off the lit LED lights of the display module, select an LED light of one color from the unlit LED lights and execute S601-S602.

7. The method for lighting up the display module during the production test process according to claim 1, characterized in that: The step of selecting a second number of display modules according to a change cycle of the output power of the power supply device comprises: Obtain the change cycle of the output power of the power supply device; Determining the stable output power of the power supply device during a variation cycle of the output power of the power supply device; The remaining power P2 is obtained from P0-P1; The value of the second quantity is obtained by 3*P2 / ((i1+i2+i3)*U); Selecting a second number of display modules from the display modules that have not been tested; Among them, P0 is the rated power of the power supply equipment, P1 is the stable output power of the power supply equipment, and U is the output voltage of the power supply equipment.

8. The method for lighting up the display module during the production test process according to claim 1, characterized in that: The step of lighting up the second number of display modules according to the change cycle of the output power of the power supply device includes: Obtain the change cycle of the output power of the power supply device; Determine a time period B in which the stable output power of the power supply device is located during a change cycle of the output power of the power supply device; Determine the idle time period of the output power variation cycle of each power supply device according to the position of each time period B in the output power variation cycle of the power supply device; In selecting the second number of display modules, every three display modules are set as a group; For each group of three display modules, the three display modules are lit up according to the idle time of the variation cycle of the output power of each power supply device.

9. A device for lighting a display module during a production test, characterized in that: The lighting device of the display module during the production test process includes: The current change module is used to obtain the current change diagram over time when the display module displays the three background colors of red, green and blue; The peak current module is used to determine the instantaneous peak current and the duration of the current mutation when each background color is displayed according to all the change diagrams; A first lighting module, used for lighting a first number of display modules according to an instantaneous peak current and a current mutation duration when each background color is displayed; A secondary selection module, used for selecting a second number of display modules according to a change cycle of the output power of the power supply device; A second lighting module, used to light up a second number of display modules according to a change cycle of the output power of the power supply device; The data updating module is used to update the instantaneous peak current and the duration of the current mutation when each background color is displayed according to the illuminated display module.

10. A lighting system for a display module during a production test process, characterized in that: The lighting system of the display module during the production test process includes: an image acquisition device, a power supply device and a computer device; The image acquisition device is connected to the computer device and is used to obtain a display image of the display module displaying a background color for production testing; The power supply device is connected to the computer device and is used to provide power to the display module; The computer device is used to execute the steps of the method for lighting up the display module during the production test process described in any one of claims 1 to 8.

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