A method, device and system for lighting a display module during a production test process

Abstract

The present application relates to the technical field of testing, in particular to a kind of display module lighting method, device and system in production test process.The method comprises: respectively obtaining the current variation graph with time in the process of display module displaying red, green and blue three background colors;According to all variation graphs, respectively determine the instantaneous peak current and current mutation duration when each background color is displayed;According to the instantaneous peak current and current mutation duration when each background color is displayed, the first number of display modules is lit;According to the change cycle of the output power of power supply equipment, the second number of display modules is selected and lit;The instantaneous peak current and current mutation duration when each background color is displayed are updated;Repeat selecting the second number of display modules to light until the production test process is completed.The present application solves the problem of selecting a reasonable number of simultaneously testing multiple display modules to speed up the detection efficiency.

Description

Technical Field

[0001] This invention relates to the field of testing technology, and in particular to a method, apparatus, and system for illuminating a display module during production testing. Background Technology

[0002] Display modules undergo screen quality testing before leaving the factory to ensure their quality and performance. Dead pixel detection is a crucial step in this process. Dead pixel detection identifies pixel defects in the display module, typically using image acquisition equipment to capture images of the display module against solid color backgrounds (red, green, blue, white, black, etc.) and then performing defect analysis.

[0003] Currently, the production testing method for detecting dead pixels in display modules generally involves performing dead pixel detection on each display module using a fixed color lighting sequence. Typically, dead pixel detection on display modules is performed one by one.

[0004] To increase testing efficiency, multiple display modules can be tested for defects simultaneously. However, multiple display modules are typically connected to the power supply in parallel. If multiple display modules' LEDs are lit simultaneously, the instantaneous peak current will be very high, potentially damaging the power supply. Excessive peak current may also damage the LEDs in the display modules, thus destroying the modules themselves. Therefore, determining the appropriate number of display modules to test simultaneously to accelerate testing efficiency is a problem that needs to be solved. Summary of the Invention

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

[0006] This invention is implemented as follows: a method for lighting up a display module during production testing, the method comprising:

[0007] S101, respectively acquire the current change over time during the process of the display module displaying red, green and blue background colors;

[0008] S102, determine the instantaneous peak current and current change duration for each background color display based on all the change diagrams;

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

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

[0011] S105, the second number of display modules are lit up according to the change cycle of the output power of the power supply equipment;

[0012] S106, Update the instantaneous peak current and current surge duration when displaying each background color based on the already lit display modules;

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

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

[0015] The current change module is used to acquire the current change over time during the process of the display module displaying red, green and blue background colors;

[0016] The peak current module is used to determine the instantaneous peak current and the duration of current surge for each background color display based on all the variation graphs.

[0017] The first lighting module is used to light up a first number of display modules based on the instantaneous peak current and the duration of the current change when each background color is displayed;

[0018] A secondary selection module is used to select a second number of display modules based on the changing cycle of the power supply equipment's output power.

[0019] The second lighting module is used to light up a second number of display modules according to the changing cycle of the output power of the power supply device;

[0020] The update data module is used to update the instantaneous peak current and current fluctuation duration for each background color display based on the already lit display modules.

[0021] In one embodiment, the present invention provides a system for lighting up a display module during production testing, the system 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 acquire the display image of the background color of the display module 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 above-mentioned method for lighting up the display module during production testing.

[0025] This invention provides a method for lighting up display modules during production testing. This method involves acquiring current-time variation graphs of the display modules displaying red, green, and blue background colors; determining the instantaneous peak current and current fluctuation duration for each background color based on these graphs; lighting up a first number of display modules based on these parameters; selecting a second number of display modules based on the output power variation cycle of the power supply; lighting up the second number of display modules based on the output power variation cycle of the power supply; updating the instantaneous peak current and current fluctuation duration for each background color based on the already lit display modules; and repeating the selection and lighting of the second number of display modules until the production testing process is complete. Specifically, this invention first selects a first number of display modules based on the instantaneous peak current displaying different background colors, then lights up the selected first number of display modules based on the current fluctuation duration, and then repeats the steps of selecting and lighting up the second number of display modules based on the output power variation cycle of the power supply until the production testing is finished. This approach allows for simultaneous production testing of multiple display modules while ensuring that the superimposed instantaneous peak current remains within the allowable range of the power supply equipment. When selecting more display modules in the future, the decision is based on the output power variation cycle of the power supply equipment, while still maintaining that the superimposed instantaneous peak current does not exceed the allowable range of the power supply equipment. This solves the problem of selecting a reasonable number of display modules for simultaneous production testing to accelerate testing efficiency. Attached Figure Description

[0026] Figure 1 This is a flowchart of a method for lighting up a display module during production testing, as described in one embodiment.

[0027] Figure 2 This is a structural block diagram of a display module lighting device during production testing in one embodiment;

[0028] Figure 3 This is a schematic diagram of a display module lighting system during production testing in one embodiment;

[0029] Figure 4 This is a block diagram of the internal structure of a computer device in one embodiment. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

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

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

[0033] S101, respectively acquire the current change over time during the process of the display module displaying red, green and blue background colors;

[0034] S102, determine the instantaneous peak current and current change duration for each background color display based on all the change diagrams;

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

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

[0037] S105, the second number of display modules are lit up according to the change cycle of the output power of the power supply equipment;

[0038] S106, Update the instantaneous peak current and current surge duration when displaying each background color based on the already lit display modules;

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

[0040] In this embodiment, multiple display modules are connected in parallel for simultaneous production testing. After being connected to the power supply, the display modules are not immediately lit up. The display modules connected in parallel to the power supply are only connected in hardware. Lighting up the LEDs on the display modules still requires software control. Therefore, the number of display modules connected in parallel to the power supply and the number of display modules being tested simultaneously are not the same concept.

[0041] In this embodiment, the defect detection of the display module is performed under five background colors: red, green, blue, white, and black. Red background indicates the red LEDs of the display module are lit; green background indicates the green LEDs are lit; blue background indicates the blue LEDs are lit; white background indicates all three background LEDs (red, green, and blue) are lit simultaneously; and black background indicates all LEDs are off. Therefore, it is only necessary to obtain the current change over time during the red, green, and blue background processes.

[0042] In this embodiment, the LED light generates a momentary peak current upon startup, which is typically several times the normal current. If multiple display modules are tested simultaneously, they are generally connected in parallel to ensure the stability of their input voltage. The more display modules tested at the same time, the greater the potential for the superposition of the momentary peak current. Although protection circuits exist, they have their limits. Therefore, the best approach is to configure the lighting process of the display modules to avoid excessive superposition of the simultaneous momentary peak current.

[0043] In this embodiment, the duration of the current surge is the time from the moment the LED light is turned on until the abnormal current begins to appear and ends, and the maximum value of this time is the instantaneous peak current.

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

[0045] In this embodiment, in steps S101-S102, a display module needs to be selected for initial production testing. Alternatively, several display modules can be selected, such as 3-5. The instantaneous peak current and current fluctuation duration for each background color are determined by calculating the average value. Historical data can also be used to obtain these parameters. In step S106, the instantaneous peak current and current fluctuation duration for each background color are updated based on the data from the display modules already tested during this production testing process, for example, by calculating the average value. Specifically, this can be based on data from all previously tested display modules, or a certain number of previously tested modules, for example, updating the instantaneous peak current and current fluctuation duration for each background color based on the data from the first 100 tested modules. Of course, data from display modules that failed the production testing can be excluded during this process.

[0046] This invention provides a method for lighting up display modules during production testing. This method involves acquiring current-time variation graphs of the display modules displaying red, green, and blue background colors; determining the instantaneous peak current and current fluctuation duration for each background color based on these graphs; lighting up a first number of display modules based on these parameters; selecting a second number of display modules based on the output power variation cycle of the power supply; lighting up the second number of display modules based on the output power variation cycle of the power supply; updating the instantaneous peak current and current fluctuation duration for each background color based on the already lit display modules; and repeating the selection and lighting of the second number of display modules until the production testing process is complete. Specifically, this invention first selects a first number of display modules based on the instantaneous peak current displaying different background colors, then lights up the selected first number of display modules based on the current fluctuation duration, and then repeats the steps of selecting and lighting up the second number of display modules based on the output power variation cycle of the power supply until the production testing is finished. This approach allows for simultaneous production testing of multiple display modules while ensuring that the superimposed instantaneous peak current remains within the allowable range of the power supply equipment. When selecting more display modules in the future, the decision is based on the output power variation cycle of the power supply equipment, while still maintaining that the superimposed instantaneous peak current does not exceed the allowable range of the power supply equipment. This solves the problem of selecting a reasonable number of display modules for simultaneous production testing to accelerate testing efficiency.

[0047] In one embodiment, obtaining the current change over time during the process of the display module displaying four background colors (red, green, and blue) includes:

[0048] Select a display module and turn on its red LED to display a red background color;

[0049] Obtain a graph showing the change of current over time during the process of displaying a red background.

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

[0051] Obtain a graph showing the change of current over time during the process of displaying a green background color;

[0052] Turn off the green LED of the display module and turn on the blue LED of the display module to display a blue background.

[0053] Obtain a graph showing the change in current over time during a process displaying a blue background.

[0054] In this embodiment, since the white background is achieved by simultaneously lighting the red, green, and blue LEDs, it is not necessary to calculate the current change over time during the process of creating the white background. When the white background is needed, the red, green, and blue LEDs can be lit sequentially, thus avoiding the superposition of current caused by the simultaneous occurrence of three instantaneous peak currents.

[0055] In this embodiment, the reason for turning off the previously lit LEDs when switching LED colors is that LEDs require a continuous supply of current to operate. If they are not turned off, the current in the subsequent change graph would need to be reduced by the current corresponding to the stable current of the already lit LEDs. Turning off the previously lit LEDs is the simplest method to make the change graph directly represent the current situation when the corresponding LED is turned on.

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

[0057] In one embodiment, determining the instantaneous peak current and the duration of the current surge for each background color display based on all the variation graphs includes:

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

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

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

[0061] The deviation from coordinate point A to coordinate points on both sides is used to determine the duration of the current change when the background color of the change graph is displayed.

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

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

[0064] In this embodiment, the instantaneous peak current is generally several times the operating 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, determining the duration of the current surge when the background color corresponding to the change graph is displayed by calculating the deviation from coordinate point A to coordinate points on both sides includes:

[0066] S401, For any side of coordinate point A, sort the coordinate points on that side in ascending order of their distance from coordinate point A on the horizontal axis;

[0067] S402, from x0-x i Obtain the difference between each coordinate point in the sorted sequence 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 If the value is greater than or equal to a preset value, then the coordinate point that appears first among two adjacent coordinate points is recorded as the interval point.

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

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

[0071] Where x0 is the value of point A on the horizontal axis, x i c represents the value of the i-th coordinate point on the horizontal axis in the sorting, where i is the index of the coordinate point in the sorting, starting from 1. i This is the difference between the i-th coordinate point and coordinate point A in the sorting process.

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

[0073] In this embodiment, the change in current is gradual outside the duration of the current surge; for the current, therefore, if c i / c i+1 A value greater than or equal to the preset value means that the change between two adjacent coordinate points is not significant, i.e., the start or end time of the duration of the current surge. 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 based on the instantaneous peak current and the duration of the current surge when each background color is displayed includes:

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

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

[0077] Select the first number of display modules from the untested display modules;

[0078] From t0+t maxObtain the first execution time;

[0079] From t1+t2+t3+t0-t min The second execution duration is obtained;

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

[0081] For each group of three display modules, the three display modules are lit up 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, i2 is the instantaneous peak current when displayed with a green background, i3 is the instantaneous peak current when displayed with a blue background, t0 is the preset acquisition time, t1 is the duration of the current surge when displayed with a red background, t2 is the duration of the current surge when displayed with a green background, t3 is the duration of the current surge when displayed with a blue background, and t... min The duration of the smallest current jump among t1, t2, and t3, t max The duration of the largest current surge among t1, t2, and t3.

[0083] In this embodiment, since the instantaneous peak current is not necessarily the same when displaying different background colors, the instantaneous peak current when displaying a particular background color cannot be used to calculate the value of the first quantity. It can be envisioned that each display module needs to process red, green, and blue background colors. If three display modules are grouped together, and the display modules within the same group display red, green, and blue background colors respectively, then the value of the superimposed instantaneous peak current of these three display modules is fixed. When the three background colors within the same group are rotated, the superimposed instantaneous peak current remains the same. Therefore, the value of the first quantity is calculated using 3*I / (i1+i2+i3). Lighting up the display modules is also done in groups of three, using these as the smallest unit.

[0084] In this embodiment, the preset acquisition time is the time it takes for the image acquisition device to acquire and display the image. The preset acquisition time can be set to 0.5 seconds.

[0085] In this embodiment, the first execution duration is the execution time for any single color of the red, green, or blue background. Each of the three background colors requires three first execution durations. The second execution duration is the execution time for the white background. The red, green, and blue background colors are lit sequentially. Theoretically, this should be the sum of the current surge durations for each of the three background colors plus the preset acquisition time. However, in practice, the display module tests the red, green, and blue background colors before testing the white background. Generally, the display module also has LEDs of any one of the three colors (red, green, and blue) lit. Therefore, one current surge duration can be subtracted. Since it's impossible to determine which background color the display module is currently displaying, the shortest of the three current surge durations is subtracted.

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

[0087] S601, every first execution duration, controls the three display modules to light up red, green and blue LEDs respectively so that the three display modules display red, green and blue background colors respectively;

[0088] S602, Select any one of the three display modules, determine whether all three colors of LEDs in the display module have been lit, if so, within the second execution time, light up all the LEDs in the reverse order of the LEDs lit in the display module.

[0089] S603, if none of the three colors of LEDs in the display module have been lit, then turn off the lit LEDs in the display module, select one color of LED from the unlit LEDs and execute S601-S602.

[0090] In this embodiment, for example, display modules 1, 2, and 3 are grouped together. During the first execution period, display module 1 displays a red background, display module 2 displays a green background, and display module 3 displays a blue background. At this time, execution S602 determines that none of the three LEDs in any of the three display modules have been lit. If display module 1 is selected, then only green and blue LEDs are unlit. If green is selected, then during the second execution period, display module 1 displays a green background, display module 2 displays a blue background, and display module 3 displays a red background. Executing S602 again at this time shows that display module 1... The condition that not all three colors of LEDs have been lit is met. At this time, only the blue LED of display module 1 is lit. Therefore, in the third execution period, display module 1 displays a blue background, display module 2 displays a red background, and display module 3 displays a green background. When S602 is executed again, the result is that all three colors of LEDs of display module 1 have been lit. In the second execution period, all LEDs are lit in the order of their colors according to the color sequence of the LEDs of the display module. The lighting order of the LEDs of display module 1 is red, green, and blue, so the reverse order is blue, green, and red. The blue LED of display module 1 is already lit, so it is only necessary to light up the green LED and the red LED in sequence.

[0091] In this embodiment, if S603 is executed, it is a process of repeatedly executing S601-S602 until all three colors of LEDs in any one of the three display modules have been lit before the process ends.

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

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

[0094] Determine the stable output power of the power supply equipment during the output power variation cycle;

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

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

[0097] Select the second number of display modules from the untested display modules;

[0098] Where P0 is the rated power of the power supply device, P1 is the stable output power of the power supply device, and U is the output voltage of the power supply device.

[0099] In this embodiment, the output power of the power supply is the product of the output voltage and the output current. Since it is a constant voltage device, the output voltage remains constant. Although the output current is related to the number of display modules being tested simultaneously, the output power of the power supply will still increase instantaneously when a peak current occurs. Once the LEDs are lit normally, the output current is the rated current of the LEDs. The output power variation period of the power supply refers to the duration of the process in which the display module displays the four background colors (red, green, blue, and white). Generally, after the second execution duration has elapsed, i.e., after the white background color is displayed and the image is captured, all LEDs turn off, signifying the end of the test for that display module. It can then be disconnected at the hardware level and replaced with another display module to be tested. The output power variation period of the power supply is generally a fixed duration and can be determined synchronously during the process of acquiring the current variation graph over time during the display of the three background colors (red, green, and blue) using the first display module.

[0100] In this embodiment, when the instantaneous peak current returns to the rated operating current of the LED lamp, the output power of the power supply at this time is the stable output power of the power supply. The output power of the power supply within the preset sampling time can be regarded as the stable output power of the power supply. The stable output power of the power supply can be determined within the output power variation cycle using various methods. For example, the time of abnormal output power can be calculated using the same method as calculating the duration of current surges, and then the time period of stable output power and the stable output power can be deduced.

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

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

[0103] Determine the time period B in which the power supply equipment has a stable output power within the cycle of output power variation.

[0104] The idle period of each power supply device's output power variation cycle is determined based on the position of each time period B within the output power variation cycle of the power supply device.

[0105] In the second number of display modules, set every three display modules 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 output power change cycle of each power supply device.

[0107] In this embodiment, time period B is essentially the 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 within this time, making full use of the spare time to increase the efficiency of the test.

[0108] In this embodiment, the process of lighting up the three display modules based on the idle time of the output power change cycle of each power supply device is the same as the step of lighting up the three display modules based on the first execution duration and the second execution duration in the first number of display modules. Generally, the duration of current surge is extremely short, usually between a few milliseconds and tens of milliseconds, while the preset acquisition time is much longer than this time. Therefore, the idle time of the output power change cycle of the power supply device is more than sufficient to accommodate the duration of current surge when the LEDs of the second number of display modules are lit. Of course, the second number of display modules also lights up the three display modules based on the first execution duration and the second execution duration, except that the times when the first number of display modules and the second number of display modules start lighting up the LEDs are staggered.

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

[0110] The current change module is used to acquire the current change over time during the process of the display module displaying red, green and blue background colors;

[0111] The peak current module is used to determine the instantaneous peak current and the duration of current surge for each background color display based on all the variation graphs.

[0112] The first lighting module is used to light up a first number of display modules based on the instantaneous peak current and the duration of the current change when each background color is displayed;

[0113] A secondary selection module is used to select a second number of display modules based on the changing cycle of the power supply equipment's output power.

[0114] The second lighting module is used to light up a second number of display modules according to the changing cycle of the output power of the power supply device;

[0115] The update data module is used to update the instantaneous peak current and current fluctuation duration for each background color display based on the already lit display modules.

[0116] In this embodiment, the various modules of the display module lighting device during the production testing process are modular components of the method of this invention. For a detailed explanation of each module, please refer to the corresponding content in the method section of this invention. This embodiment of the invention will not be repeated here.

[0117] like Figure 3 As shown, in one embodiment, a system for lighting up a display module during production testing 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 acquire the display image of the background color of the display module 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 above-mentioned method for lighting up the display module during production testing.

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

[0122] In this embodiment, the power supply device provides power to the display module, which is used not only to light up the LEDs 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 consisting 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 lights in the display module.

[0125] This invention provides a system for illuminating display modules during production testing. This system acquires current-time variation graphs of the display modules displaying red, green, and blue background colors. Based on these graphs, it determines the instantaneous peak current and current fluctuation duration for each background color. A first number of display modules are illuminated based on these parameters. A second number of display modules are selected based on the output power variation cycle of the power supply. The second number of display modules are then illuminated based on the output power variation cycle of the power supply. The instantaneous peak current and current fluctuation duration for each background color are updated based on the illuminated display modules. This process is repeated until the production testing process is complete. Specifically, this invention first selects a first number of display modules based on the instantaneous peak current displaying different background colors, then illuminates the selected first number of display modules based on the current fluctuation duration, and then repeats the process of selecting and illuminating a second number of display modules based on the output power variation cycle of the power supply until the production testing is finished. This approach allows for simultaneous production testing of multiple display modules while ensuring that the superimposed instantaneous peak current remains within the allowable range of the power supply equipment. When selecting more display modules in the future, the decision is based on the output power variation cycle of the power supply equipment, while still maintaining that the superimposed instantaneous peak current does not exceed the allowable range of the power supply equipment. This solves the problem of selecting a reasonable number of display modules for simultaneous production testing to accelerate testing efficiency.

[0126] Figure 4 An internal structural diagram of a computer device in one embodiment is shown. Figure 4 As shown, the computer device includes a processor, memory, network interface, input device, and display screen connected via a system bus. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and may also store a computer program. When executed by the processor, this computer program enables the processor to implement a method for lighting up a display module during production testing, as provided in this embodiment of the invention. The internal memory may also store a computer program. When executed by the processor, this computer program enables the processor to implement a method for lighting up a display module during production testing, as provided in this embodiment of the invention. The display screen of the computer device can be a liquid crystal display (LCD) or an e-ink display. The input device of the computer device can be a touch layer covering the display screen, or buttons, a trackball, or a touchpad mounted on the computer device casing, or an external keyboard, touchpad, or mouse, etc.

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

[0128] In one embodiment, the device for lighting up a display module during production testing provided by this invention can be implemented as a computer program, which can be configured as follows: Figure 4 The computer device shown is running the program. The computer device's memory can store the various program modules that make up the lighting device of the display module during the product testing process, for example, Figure 2 The diagram shows a current variation module, a peak current module, a first lighting module, a secondary selection module, a second lighting module, and an update data module. The computer program comprised of these modules causes the processor to execute the steps of a method for lighting a display module during production testing, as described in the various embodiments of the present invention.

[0129] For example, Figure 4 The computer device shown can be used as follows Figure 2 The current change module in the lighting device of the display module shown in the production test process 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 data update module.

[0130] In one embodiment, a computer device is provided, the computer device including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, performs the following steps:

[0131] S101, respectively acquire the current change over time during the process of the display module displaying red, green and blue background colors;

[0132] S102, determine the instantaneous peak current and current change duration for each background color display based on all the change diagrams;

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

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

[0135] S105, the second number of display modules are lit up according to the change cycle of the output power of the power supply equipment;

[0136] S106, Update the instantaneous peak current and current surge duration when displaying each background color based on the already lit display modules;

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

[0138] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, causes the processor to perform the following steps:

[0139] S101, respectively acquire the current change over time during the process of the display module displaying red, green and blue background colors;

[0140] S102, determine the instantaneous peak current and current change duration for each background color display based on all the change diagrams;

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

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

[0143] S105, the second number of display modules are lit up according to the change cycle of the output power of the power supply equipment;

[0144] S106, Update the instantaneous peak current and current surge duration when displaying each background color based on the already lit display modules;

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

[0146] It should be understood that although the steps in the flowcharts of the various embodiments of the present invention are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the various embodiments may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0147] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided by this 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. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and RAMbus dynamic RAM (RDRAM), etc.

[0148] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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 embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A method for illuminating a display module during production testing, characterized in that, The method for activating the display module during the production testing process includes: S101, respectively obtain the current change over time during the process of the display module displaying red, green and blue background colors; S102, determine the instantaneous peak current and current change duration for each background color display based on all the change diagrams; S103, the first number of display modules are lit up according to the instantaneous peak current and the duration of current change when each background color is displayed; S104, Select a second number of display modules according to the output power change cycle of the power supply device; S105, the second number of display modules are lit up according to the change cycle of the output power of the power supply equipment; S106, Update the instantaneous peak current and current surge duration when displaying each background color based on the already lit display modules; S107, repeat S104-S106 until the production testing process is completed; The step of lighting up a first number of display modules based on the instantaneous peak current and the duration of the current surge when each background color is displayed includes: Obtain the rated output current I of the power supply device; Depend on Get the first number of values; Select the first number of display modules from the untested display modules; Depend on Obtain the first execution time; Depend on The second execution duration is obtained; In the first selection of display modules, set every three display modules as a group; For each group of three display modules, the three display modules are lit up according to the first execution time and the second execution time; Where i1 is the instantaneous peak current when displayed with a red background, i2 is the instantaneous peak current when displayed with a green background, i3 is the instantaneous peak current when displayed with a blue background, t0 is the preset acquisition time, t1 is the duration of the current surge when displayed with a red background, t2 is the duration of the current surge when displayed with a green background, t3 is the duration of the current surge when displayed with a blue background, and t... min The duration of the smallest current jump among t1, t2, and t3, t max The duration of the largest current surge among t1, t2, and t3; The step of lighting up the three display modules according to the first execution duration and the second execution duration includes: S601, every first execution duration, controls the three display modules to light up red, green and blue LEDs respectively so that the three display modules display red, green and blue background colors respectively; S602, Select any one of the three display modules, determine whether all three colors of LEDs in the display module have been lit, if so, within the second execution time, light up all the LEDs in the reverse order of the LEDs lit in the display module. S603, if all three colors of LEDs in the display module have not been lit, turn off the lit LEDs in the display module, select one color of LED from the unlit LEDs and execute S601-S602. The step of selecting a second number of display modules based on the output power variation cycle of the power supply device includes: Obtain the period of change in the output power of the power supply device; Determine the stable output power of the power supply equipment during the output power variation cycle; Depend on The remaining power P2 is obtained; Depend on Get the second number of values; Select the second number of display modules from the untested display modules; Where P0 is the rated power of the power supply device, P1 is the stable output power of the power supply device, and U is the output voltage of the power supply device; The step of lighting up a second number of display modules according to the output power variation cycle of the power supply device includes: Obtain the period of change in the output power of the power supply device; Determine the time period B in which the power supply equipment has a stable output power within the cycle of output power variation. The idle period of each power supply device's output power variation cycle is determined based on the position of each time period B within the output power variation cycle of the power supply device. In the second number of display modules, set every three display modules as a group; For each group of three display modules, the three display modules are lit up according to the idle time of the output power change cycle of each power supply device.

2. The method for lighting up the display module during production testing according to claim 1, characterized in that, The step of obtaining the current change over time during the process of the display module displaying four background colors (red, green, and blue) includes: Select a display module and turn on its red LED to display a red background color; Obtain a graph showing the change of current over time during the process of displaying a red background. Turn off the red LED of the display module and turn on the green LED to display a green background color; Obtain a graph showing the change of current over time during the process of displaying a green background color; Turn off the green LED of the display module and turn on the blue LED of the display module to display a blue background. Obtain a graph showing the change in current over time during a process displaying a blue background.

3. The method for lighting up the display module during production testing according to claim 1, characterized in that, The step of determining the instantaneous peak current and the duration of current surge for each background color display based on all the variation diagrams includes: For each change graph, obtain the scatter plot corresponding to the change curve in that change graph; Obtain all coordinate points in the scatter plot and determine the value of each coordinate point on the vertical axis; The point A with the largest value on the vertical axis is recorded as the instantaneous peak current when the background color of the change graph is displayed. The deviation from coordinate point A to coordinate points on both sides is used to determine the duration of the current change when the background color of the change graph is displayed.

4. The method for lighting up the display module during production testing according to claim 3, characterized in that, The step of determining the duration of the current surge when the background color is displayed corresponding to the change graph by calculating the deviation from coordinate point A to coordinate points on both sides includes: S401, For any side of coordinate point A, sort the coordinate points on that side in ascending order of their distance from coordinate point A on the horizontal axis; S402, by Obtain the difference between each coordinate point in the sorted sequence and coordinate point A; S403, select two adjacent coordinate points in sequence according to the sorting order, and then determine... If the value is greater than or equal to a preset value, then the coordinate point that appears first among two adjacent coordinate points is recorded as the interval point. S404, if If the value is less than the preset value, repeat steps S401-S103 until... Greater than or equal to the preset value; S405, determine the duration of the current change when the background color of the change graph is displayed based on the values ​​of the interval points on both sides of coordinate point A on the horizontal axis; Where x0 is the value of point A on the horizontal axis, x i c represents the value of the i-th coordinate point on the horizontal axis in the sorting, where i is the index of the coordinate point in the sorting, starting from 1. i This is the difference between the i-th coordinate point and coordinate point A in the sorting process.

5. A device for illuminating a display module during production testing, characterized in that, The device for lighting up the display module during the production testing process includes: The current change module is used to acquire the current change over time during the process of the display module displaying red, green and blue background colors; The peak current module is used to determine the instantaneous peak current and the duration of current surge for each background color display based on all the variation graphs. The first lighting module is used to light up a first number of display modules based on the instantaneous peak current and the duration of the current change when each background color is displayed; A secondary selection module is used to select a second number of display modules based on the changing cycle of the power supply equipment's output power. The second lighting module is used to light up a second number of display modules according to the changing cycle of the output power of the power supply device; The update data module is used to update the instantaneous peak current and current fluctuation duration for each background color display based on the already lit display modules; The step of lighting up a first number of display modules based on the instantaneous peak current and the duration of the current surge when each background color is displayed includes: Obtain the rated output current I of the power supply device; Depend on Get the first number of values; Select the first number of display modules from the untested display modules; Depend on Obtain the first execution time; Depend on The second execution duration is obtained; In the first selection of display modules, set every three display modules as a group; For each group of three display modules, the three display modules are lit up according to the first execution time and the second execution time; Where i1 is the instantaneous peak current when displayed with a red background, i2 is the instantaneous peak current when displayed with a green background, i3 is the instantaneous peak current when displayed with a blue background, t0 is the preset acquisition time, t1 is the duration of the current surge when displayed with a red background, t2 is the duration of the current surge when displayed with a green background, t3 is the duration of the current surge when displayed with a blue background, and t... min The duration of the smallest current jump among t1, t2, and t3, t max The duration of the largest current surge among t1, t2, and t3; The step of lighting up the three display modules according to the first execution duration and the second execution duration includes: S601, every first execution duration, controls the three display modules to light up red, green and blue LEDs respectively so that the three display modules display red, green and blue background colors respectively; S602, Select any one of the three display modules, determine whether all three colors of LEDs in the display module have been lit, if so, within the second execution time, light up all the LEDs in the reverse order of the LEDs lit in the display module. S603, if all three colors of LEDs in the display module have not been lit, turn off the lit LEDs in the display module, select one color of LED from the unlit LEDs and execute S601-S602. The step of selecting a second number of display modules based on the output power variation cycle of the power supply device includes: Obtain the period of change in the output power of the power supply device; Determine the stable output power of the power supply equipment during the output power variation cycle; Depend on The remaining power P2 is obtained; Depend on Get the second number of values; Select the second number of display modules from the untested display modules; Where P0 is the rated power of the power supply device, P1 is the stable output power of the power supply device, and U is the output voltage of the power supply device; The step of lighting up a second number of display modules according to the output power variation cycle of the power supply device includes: Obtain the period of change in the output power of the power supply device; Determine the time period B in which the power supply equipment has a stable output power within the cycle of output power variation. The idle period of each power supply device's output power variation cycle is determined based on the position of each time period B within the output power variation cycle of the power supply device. In the second number of display modules, set every three display modules as a group; For each group of three display modules, the three display modules are lit up according to the idle time of the output power change cycle of each power supply device.

6. A lighting system for a display module during production testing, characterized in that, The lighting system for the display module during the production testing process includes: image acquisition equipment, power supply equipment, and computer equipment; The image acquisition device is connected to the computer device and is used to acquire the display image of the background color of the display module 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 perform the steps of the method for lighting up the display module during the production testing process as described in any one of claims 1 to 4.

Images