Display screen testing device and method

Abstract

The invention discloses a display screen testing device and method. The device comprises a main control board and a man-machine interaction panel. The main control board is used for taking the driving voltage and the detection current corresponding to the display screen category located in the first sequence in a preset category test information base as a target driving voltage and a target detection current respectively when receiving a connection signal of the display screen to be tested, and executing a test step: providing the target driving voltage to the display screen to be tested, detecting the working current of the to-be-tested display screen under the target driving voltage, comparing the working current with the target detection current, judging whether the target driving voltage is matched with the to-be-tested display screen or not according to a comparison result, and completing the testing step; and if yes, obtaining a test result based on the comparison result, and if not, taking the driving voltage and the detection current corresponding to the next sorted display screen category in the category test information base as the target driving voltage and the target detection current. The device can be used for testing various types of display screens.

Description

Technical Field

[0001] The present invention relates to the technical field of display screen testing, and in particular to a display screen testing device and method. Background Art

[0002] With the increase in screen categories, there are many types of displays currently used on the market. Their appearance and interface pin definitions are consistent, but the operating voltages of different types of displays may be inconsistent, resulting in a separate set of test fixtures required for each type of display.

[0003] During actual testing, due to the tester's negligence in identifying the material number and name, or mixing materials, the wrong tooling can be used, which can easily damage the display or tooling, increasing costs. Therefore, traditional testing methods are no longer suitable for current production environments. Their economic efficiency and reliability of test results are both poor, and improvement is urgently needed. Summary of the Invention

[0004] The embodiments of the present application provide a display screen testing device and method, which can be used to test various types of display screens, distinguish the display screen categories and the good conditions of the display screens, and avoid the problem of the test device not corresponding to the display screen category, which may cause the test instrument or the display screen to burn out.

[0005] In a first aspect, the present invention provides the following technical solutions through an embodiment of the present invention:

[0006] A display screen testing device comprises: a main control board and a human-computer interaction panel;

[0007] The main control board is configured to, upon receiving a connection signal from a display screen to be tested, use the driving voltage and detection current corresponding to the first-ranked display screen category in a preset category test information library as target driving voltage and target detection current, respectively, and perform a test step: providing the target driving voltage to the display screen to be tested, detecting the operating current of the display screen to be tested under the target driving voltage, comparing the operating current with the target detection current, and determining whether the target driving voltage matches the display screen to be tested based on the comparison result, thereby completing the test step; if so, obtaining a test result based on the comparison result; if not, using the driving voltage and detection current corresponding to the next-ranked display screen category in the category test information library as the target driving voltage and target detection current, and performing the test step again until the test result is obtained; wherein the category test information library includes: multiple display screen categories and the driving voltage and detection current corresponding to each display screen category, and the multiple display screen categories are sorted in order of driving voltage from low to high; the human-computer interaction panel is electrically connected to the main control board and configured to display the test result to a user.

[0008] Preferably, the main control board is also used to obtain category information of one or more display screens to be tested, and based on the category information, determine the driving voltage and detection current corresponding to different display screen categories, and sort them in order from low to high according to the driving voltage to obtain a category test information library.

[0009] Preferably, the main control board includes a main control module, a current detection module and a power supply module, the main control module is electrically connected to the current detection module, the power supply module and the human-computer interaction panel, respectively, and the power supply module and the current detection module are used to connect to the display screen to be tested; the main control module is used to, when receiving a connection signal of the display screen to be tested, use the driving voltage and detection current corresponding to the display screen category in the first sort in the preset category test information library as the target driving voltage and target detection current respectively; the power supply module is used to provide the target driving voltage to the display screen to be tested, and the current detection module is used to detect the operating current of the display screen to be tested under the target driving voltage; the main control module is also used to compare the operating current with the target detection current, and determine whether the target driving voltage matches the display screen to be tested based on the comparison result; if so, obtain a test result based on the comparison result; if not, use the driving voltage and detection current corresponding to the display screen category in the next sort in the category test information library as the target driving voltage and target detection current, until the test result is obtained.

[0010] Preferably, the main control board also includes a key drive module, which is electrically connected to the main control module. The human-computer interaction panel includes a display screen placement area and a test start button set on the panel, and the test start button is electrically connected to the key drive module; the display screen placement area is used to place the display screen to be tested, and the test start button is used to control the start and close of the test. The key drive module is used to send the received start or close signal to the main control module.

[0011] Preferably, the main control board also includes an indicator light control module, which is electrically connected to the main control module. The human-computer interaction panel also includes a test success indicator light and a test failure indicator light, and the test result indicator light is electrically connected to the indicator light control module; the main control module is also used to send an indicator light control instruction to the indicator light control module according to the test result; the indicator light control module is used to control the display of the test success indicator light and the test failure indicator light according to the indicator light control instruction.

[0012] Preferably, the human-computer interaction panel also includes multiple category indicator lights, which are electrically connected to the indicator light control module; the main control module is also used to send category control instructions to the indicator light control module based on the test results; the indicator light control module is also used to control the display of the multiple category indicator lights according to the category control instructions.

[0013] Preferably, the main control board also includes a display screen driver module, which is electrically connected to the main control module. The human-computer interaction panel also includes a setting window, and the display screen driver module is electrically connected to the setting window. The setting window is used to send a display screen control signal to the main control module if a window button is pressed. The main control module is also used to send a display screen control signal to the display screen driver module. The display screen driver module is used to control the display content of the setting window according to the display screen control signal.

[0014] Preferably, the main control board further includes a buzzer control module, the buzzer control module is electrically connected to the main control module, and the human-computer interaction panel further includes a buzzer, the buzzer is electrically connected to the buzzer control module;

[0015] The main control module is further configured to send a buzzer control instruction to the buzzer control module according to the test result; and the buzzer control module is configured to control the buzzer according to the buzzer control instruction.

[0016] In a second aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0017] A display screen testing method, applied to a main control board according to any one of the first aspects of the preceding claims, the method comprising:

[0018] Upon receiving a connection signal from the display screen to be tested, the driving voltage and detection current corresponding to the display screen category in the first ranking in the preset category test information library are used as the target driving voltage and target detection current, respectively, and a test step is performed: the target driving voltage is provided to the display screen to be tested, and the operating current of the display screen to be tested under the target driving voltage is detected, the operating current is compared with the target detection current, and whether the target driving voltage matches the display screen to be tested is determined based on the comparison result, thereby completing the test step; if so, a test result is obtained based on the comparison result; if not, the driving voltage and detection current corresponding to the display screen category in the next ranking in the category test information library are used as the target driving voltage and target detection current, and the test step is performed again until the test result is obtained, and the test result is displayed through a human-computer interaction panel; wherein the category test information library includes: multiple display screen categories and the driving voltage and detection current corresponding to each display screen category, and the multiple display screen categories are sorted in order of driving voltage from low to high.

[0019] Preferably, before receiving the connection signal of the display screen to be tested, the method further includes: obtaining category information of one or more display screens to be tested; determining the driving voltage and detection current corresponding to different display screen categories based on the category information, and sorting them in order from low to high according to the driving voltage to establish a category test information library.

[0020] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0021] The display screen testing device provided by an embodiment of the present invention is unclear about the true category and functional status of the randomly selected display screen when receiving a connection signal from the display screen to be tested, due to confusion or incorrect category labeling in the pre-input category information. Furthermore, since the driving voltages (i.e., operating voltages) of different categories of display screens vary, to ensure the safety of displays with low driving voltages, the driving voltages in a pre-determined category test information library are sorted from small to large. The driving voltage ranked first is first used as the target driving voltage, and the corresponding detection current is used as the target detection current. The target driving voltage is then transmitted to the display screen to be tested for testing. At this point, regardless of the display screen category being tested, the operating current of the display screen being tested is matched with the target detection current to determine whether the display screen being tested is of the display screen category corresponding to the target driving voltage. The matching result between the two is output, and the display screen's excellent status is determined based on the operating current. This device can test multiple categories of display screens, ensuring the safety of multiple display screen tests, and has high application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 Schematic diagram of the structure of a display screen testing device according to an embodiment of the present invention;

[0024] Figure 2 This is a structural diagram of the main control board and the human-computer interaction panel in an embodiment of the present invention;

[0025] Figure 3 This is a detailed structural diagram of a human-computer interaction panel in an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of the structure of a display window and a window button in an embodiment of the present invention;

[0027] Figure 5 Schematic diagram of the flow of a display screen testing method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The embodiments of the present application provide a display screen testing device and method, which can be used to test various types of display screens, distinguish the display screen categories and the good conditions of the display screens, and avoid the problem of the test device not corresponding to the display screen category, which may cause the test instrument or the display screen to burn out.

[0029] The technical solution of the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0030] A display screen test device comprises: a main control board and a human-computer interaction panel; the main control board is configured to, upon receiving a connection signal from a display screen to be tested, use the driving voltage and detection current corresponding to the first-ranked display screen category in a preset category test information library as target driving voltage and target detection current, respectively, and execute a test step: providing the target driving voltage to the display screen to be tested, detecting the operating current of the display screen to be tested under the target driving voltage, comparing the operating current with the target detection current, and determining whether the target driving voltage matches the display screen to be tested based on the comparison result, thereby completing the test step; if so, obtaining a test result based on the comparison result; if not, using the driving voltage and detection current corresponding to the next-ranked display screen category in the category test information library as the target driving voltage and target detection current, and executing the test step again until a test result is obtained; wherein the category test information library includes: multiple display screen categories and the driving voltage and detection current corresponding to each display screen category, and the multiple display screen categories are sorted in order of driving voltage from low to high; the human-computer interaction panel is electrically connected to the main control board and is configured to display the test result to a user.

[0031] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0032] In a first aspect, this embodiment provides a display screen testing device, such as Figure 1 As shown, the device includes: a main control board and a human-computer interaction panel;

[0033] The main control board is configured to, upon receiving a connection signal from the display screen to be tested, use the driving voltage and detection current corresponding to the display screen category in the first order in the preset category test information library as the target driving voltage and target detection current, respectively, and perform a test step: providing the target driving voltage to the display screen to be tested, detecting the operating current of the display screen to be tested under the target driving voltage, comparing the operating current with the target detection current, and determining whether the target driving voltage matches the display screen to be tested based on the comparison result, thereby completing the test step;

[0034] If so, a test result is obtained based on the comparison result; if not, the driving voltage and detection current corresponding to the next display screen category in the category test information library are used as the target driving voltage and target detection current, and the test steps are performed again until the test result is obtained; wherein, the category test information library includes: multiple display screen categories and the driving voltage and detection current corresponding to each display screen category, and the multiple display screen categories are sorted in order from low to high according to the driving voltage; a human-computer interaction panel is electrically connected to the main control board and is used to display the test results to the user.

[0035] The main control board is also used to obtain the category information of one or more display screens to be tested, and according to the category information, determine the driving voltage and detection current corresponding to different display screen categories, and sort them in order from low to high according to the driving voltage to establish a category test information library.

[0036] Optionally, the testing device provided in this application can test multiple categories of display screens, for example, two, three, five, six, etc., which is not limited in this application.

[0037] In a specific implementation process, obtaining category information of one or more display screens to be tested may include: receiving input test start parameters and input display screen categories, and obtaining category information of one or more display screens to be tested, wherein the test start parameters reflect the category of the display screen to be tested.

[0038] The test start parameters and the display screen category can be input into the test device in advance before the display screen is placed. Specifically, the display screen category to be tested indicated in the test start parameters is added to the input display screen category to be used as the display screen category to be tested.

[0039] For example, assuming that the display screen categories stored in the main control module include display screen categories 1, 2, 3, 4, and 5, the input display screen categories are display screen category 6 and display screen category 7, and the test startup parameter is a string of startup codes input. For example, if the input test startup parameter is "11000", the test startup parameters are set to 1 for display screen category 1, 1 for display screen category 2, 0 for display screen category 3, 0 for display screen category 4, and 0 for display screen category 5. It can be determined that the display screen categories to be tested are display screen category 1, display screen category 2, display screen category 6, and display screen category 7.

[0040] In one embodiment, determining the driving voltage and detection current corresponding to each of the different display screen categories based on the category information may include: determining from a preset test information library whether there are driving voltages and detection currents corresponding to each of the different display screen categories based on the category information; if so, retrieving the driving voltage and detection current; if the driving voltage and detection current corresponding to a certain display screen category do not exist in the test information library, setting the driving voltage and test current corresponding to the display screen category using a human-computer interaction panel according to the test specification, and storing them in a predetermined memory, wherein the test specification is a standard test specification for the display screen category.

[0041] It should be noted that the test information library here stores all display screen categories that have been tested before and the driving voltages and detection voltages corresponding to all display screen categories.

[0042] In another embodiment, determining the driving voltage and detection current corresponding to different display screen categories based on the category information may include: retrieving the corresponding driving voltage and detection current from a target memory based on the category information, wherein the target memory pre-stores the driving voltage and detection current corresponding to different category information.

[0043] After determining the driving voltages and detection currents corresponding to one or more display screen categories, the categories are sorted according to the magnitude of the driving voltages, and the sorted display screen categories are stored separately as a category test information library required for this test.

[0044] For example, the driving voltage for display category 1 is 18V, and the driving voltage for display category 2 is 6.35V. The categories are sorted by driving voltage, so the driving voltage test priority is display category 2, display category 1. During the test phase, any randomly selected display to be tested is tested using the driving voltage and test current corresponding to the first-ranked display category 2. If it is determined that the target driving voltage does not match the display to be tested, the driving voltage and test current of the next-ranked display category 1 are used to continue testing the display to be tested. Testing in order of voltage from low to high effectively prevents damage to the display due to high voltage, ensuring a safer and more reliable testing process.

[0045] In a specific embodiment, the operating current is compared with the target detection current, and whether the target driving voltage matches the display screen to be tested is determined based on the comparison result. If so, a test result is obtained based on the comparison result, which may include: if the operating current is within the upper and lower limits of the detection current, the match is determined to be successful, and the output test result is that the display screen test is successful; if the operating current exceeds the upper limit of the detection current, or the operating current is between the lower limit and the lower limit extreme value of the detection current, the match is determined to be completed, and the output test result is that the display screen test fails.

[0046] Specifically, exceeding the upper limit of the detection current includes: the operating current being between the upper limit of the detection current and the upper limit extreme value, and the operating current exceeding the upper limit extreme value of the detection current, where the upper limit extreme value is the value obtained by dividing the upper limit of the detection current by a preset deviation current. Matching completed indicates that the current display under test has completed the matching steps and no further testing is required.

[0047] Optionally, the preset deviation current can be 80% to 90%, for example, the preset deviation current is 85%. The matching result can reflect whether the category of the display screen currently being tested is the same as the first-ranked display screen category in the category test information library, and whether the status of the display screen currently being tested is good.

[0048] If the operating current is less than the lower limit of the detection current, it is determined that the match does not correspond, wherein the lower limit is the product of the lower limit of the detection current and the preset deviation current.

[0049] If the comparison result indicates a mismatch, the display type currently being tested does not match the first-order display type. The test continues with the drive voltage and test current for the next-order display type. If the match still fails, the test continues with the drive voltage and test current for the next-order display type until a match is found or the test completes.

[0050] In a specific embodiment, after the display screen category in the first order is successfully matched with the display screen to be tested: if the main control board receives a connection signal of a new display screen to be tested, the new display screen to be tested is tested using the driving voltage and detection current of the display screen category in the second order. If the operating current of the display screen to be tested successfully matches the detection current of the display screen category in the second order, the detection result is displayed. If the match does not correspond, the driving voltage and detection current of the display screen category in the next order are continued to be tested.

[0051] In a specific embodiment, Figure 2 As shown, the main control board may include a main control module 101, a current detection module 1022 and a power supply module 103. The main control module 101 is electrically connected to the current detection module 102, the power supply module 103 and the human-computer interaction panel 20 respectively. The power supply module 103 and the current detection module 102 are used to connect to the display screen to be tested.

[0052] The main control module 101 is configured to, upon receiving a connection signal from a display screen to be tested, use the driving voltage and detection current corresponding to the display screen category in the first order in the preset category test information library as the target driving voltage and target detection current, respectively;

[0053] The power supply module 103 is used to provide the target driving voltage to the display screen to be tested, and the current detection module 102 is used to detect the operating current of the display screen to be tested under the target driving voltage;

[0054] The main control module 101 is further used to compare the operating current with the target detection current, and determine whether the target driving voltage matches the display screen to be tested based on the comparison result; if so, a test result is obtained based on the comparison result; if not, the driving voltage and detection current corresponding to the next display screen category in the category test information library are used as the target driving voltage and target detection current, until the test result is obtained.

[0055] The main control module 101 is used to obtain category information of one or more display screens to be tested, and the driving voltage and detection current corresponding to different display screen categories are determined according to the category information, so that each display screen category corresponds to a driving voltage and detection current.

[0056] In a specific embodiment, Figure 2 As shown, the main control board can also include a power supply module 104, which is electrically connected to the main control module 101, the power supply module 103 and the human-computer interaction module. The power supply module 104 is used to connect to an external power supply, and the main control module 101 is used to provide power to the main control module 101, the power supply module 103 and the human-computer interaction module.

[0057] Furthermore, in order to more flexibly control the opening and closing of the test, such as Figure 2 As shown, the main control board may further include a key driving module 105, which is electrically connected to the main control module 101. Figure 3 As shown, the human-computer interaction panel 20 may include a display screen placement area 201 and a test start button 202 provided on the panel. The test start button 202 is electrically connected to the button driving module 105 .

[0058] The display screen placement area 201 is used to place the display screen to be tested, the test start button 202 is used to control the start and stop of the test, and the button driving module 105 is used to send the received start or stop signal to the main control module 101.

[0059] Specifically, upon recognizing a press of the test start button 202, the button driver module 105 sends a connection signal to the main control module 101. To test the display screen, the operator first installs the display screen in the display placement area 201 and triggers the test start button 202. The button driver module 105 recognizes the connection signal from the display screen and forwards it to the main control module 101, which then receives the connection signal from the display screen.

[0060] In one embodiment, the display screen placement area 201 may be a profiling jig. After determining the driving voltages and detection currents corresponding to different display screen types, if a display screen under test is identified as being placed within the profiling jig and a press signal of the test start button 202 is detected, the target driving voltage is transmitted to the power supply module 103, causing the power supply module 103 to provide the target driving voltage to the display screen and obtain the operating current of the display screen detected by the current detection module 102.

[0061] Furthermore, in order to better display the test results, such as Figure 2As shown, the main control board can also include an indicator light control module 106, which is electrically connected to the main control module 101. The human-computer interaction panel 20 can also include a test success indicator light 203 and a test failure indicator light 204, and the test result indicator light is electrically connected to the indicator light control module 106.

[0062] The main control module 101 is further configured to send an indicator light control instruction to the indicator light control module 106 according to the test results; the indicator light control module 106 is configured to control the display of the test success indicator light 203 and the test failure indicator light 204 according to the indicator light control instruction.

[0063] Specifically, if the test result of the display screen is that the test is successful, the test success indicator light 203 is lit; if the test result of the display screen is that the test is unqualified, the test unqualified indicator light 204 is lit.

[0064] Furthermore, in order to more clearly define the category of the display screen to be tested, such as Figure 2 As shown, the human-computer interaction panel 20 can also include multiple category indicator lights 205, and the multiple category indicator lights are electrically connected to the indicator light control module 106; the main control module 101 is also used to send category control instructions to the indicator light control module 106 according to the test results; the indicator light control module 106 is also used to control the display of multiple category indicator lights according to the category control instructions.

[0065] In one embodiment, the plurality of category indicator lights may include display category indicator lights 1 to N, where N is a positive integer greater than 1. If the display category is 1, the display category indicator light 1 is turned on; if the display category is 2, the display category indicator light 2 is turned on.

[0066] Furthermore, in order to achieve better prompting effect, Figure 2 As shown, the main control board may further include a buzzer control module 107 , which is electrically connected to the main control module 101 . The human-computer interaction panel 20 may further include a buzzer 209 , which is electrically connected to the buzzer control module 107 .

[0067] The main control module 101 is further configured to send a buzzer control instruction to the buzzer control module 107 according to the test result; and the buzzer control module 107 is configured to control the buzzer according to the buzzer control instruction.

[0068] For example, if the test result is a success, the buzzer will sound briefly for 1 second; if the test result is a failure, the buzzer will sound long for 3 seconds.

[0069] Furthermore, in order to facilitate the configuration of driving voltage and detection current for different display screen types, such as Figure 2As shown, the main control board may further include a display screen driver module 108, the display screen driver module 108 is electrically connected to the main control module 101, and the human-computer interaction panel 20 may further include a setting window, the display screen driver module 108 is electrically connected to the setting window;

[0070] The setting window is used to send a display control signal to the main control module 101 if a press signal of the window button 207 is received; the main control module 101 is also used to send a display control signal to the display driver module 108; the display driver module 108 is used to control the display content of the setting window according to the display control signal.

[0071] In another embodiment, Figure 2 As shown, the main control board may include a display screen driver module 108, and the human-computer interaction panel 20 may also include a display window 206, a window button 207 and a setting indicator light 208. The display screen driver module 108 is electrically connected to the display window 206, the window button 207 is electrically connected to the button driver module 105, and the setting indicator light 208 is electrically connected to the indicator light driver module.

[0072] The window button 207 is used to set the driving voltage and detection current of the display screen to be tested; the button driving module 105 is also used to send a display screen control signal to the main control module 101 if a pressing signal of the window button 207 is recognized; the main control module 101 is also used to send a display screen control signal to the display screen driving module 108; the display screen driving module 108 is used to control the display content of the display window according to the display screen control signal; the display window 206 is used to display the adjusted voltage and current in real time; the setting indicator light 208 is used to display the setting result.

[0073] In one embodiment, if the display screen category to be tested obtained by the main control module 101 is not identified from the test information library, the voltage and current are adjusted through the window button 207, and the button driving module 105 is used to set the driving voltage and detection current corresponding to the display screen category.

[0074] In a specific embodiment, the display screen driver module 108 is also used to adjust the driving voltage and detection current corresponding to different types of display screens according to the display screen control signal, and send it to the main control module 101; the main control module 101 is also used to pre-store the set driving voltage and detection current corresponding to different types of display screens in the test information library and the category test information library.

[0075] In one embodiment, Figure 4As shown, the window button 207 may include a switch sub-button 301 (○ button), a left shift sub-button 302 (< button), a right shift sub-button 303 (> button), a downward sub-button 304 (∨ button), and an upward sub-button 305 (∧ button); the display window 206 may include: a display screen category display area 401, a driving voltage display area 402, a detection current lower limit display area 403, a detection current upper limit display area 404, and a test enable display area 405.

[0076] The switch sub-button 301 is used to switch the display screen between the test state and the set state, the left sub-button 302 is used to set the state cursor to move to the left, the right sub-button 303 is used to set the state cursor to move to the right, the down sub-button 304 is used to set the state to adjust the value downward, and the up sub-button 305 is used to set the state to adjust the value upward.

[0077] Among them, the display screen category display area 401 is used to display the currently set display screen category; the driving voltage display area 402 is used to display the driving voltage provided by the device under the current display screen category; the detection current lower limit display area 403 is used to display the lower limit of the current determined by the device for good products under the current display screen category; the detection current upper limit display area 404 is used to display the upper limit of the current determined by the device for good products under the current display screen category; the test start display area 405 is used to display whether the device starts the category determination under the current display screen category, "0" indicates that the category determination is not performed, and "1" indicates that the category determination is performed.

[0078] As another embodiment, the human-computer interaction panel 20 may include a configuration module, which is electrically connected to the display window. The configuration module and the display window are integrated into a display operation screen. The staff can make settings through virtual buttons (window buttons 207) and the setting content is displayed in real time.

[0079] To make it easier to understand, here is a simple adjustment example:

[0080] When the word [ready] is displayed in the display window, press and hold the switch sub-button for 13 seconds to switch the display window to the setting state. The setting indicator light is on, the display category shows: 1, the drive voltage shows: 18.00, the lower limit of the detection current shows: 040.0, the upper limit of the detection current shows: 050.0, and the test start shows: 1.

[0081] Press the right shift sub-button to control the flashing cursor to move to the right. Each time you press it, the cursor moves one position. If you press and hold for more than 3 seconds, the cursor moves to the right at a speed of one position per 0.5 seconds until it moves to the far right and stops moving. The same applies to the left shift sub-button. It moves to the far left and stops moving.

[0082] Furthermore, in order to control the test process more flexibly, the human-computer interaction panel 20 may further include an interrupt test button 210 , which is electrically connected to the button driving module 105 .

[0083] The key driving module 105 is used to send an interrupt control signal to the main control module 101 if it recognizes the pressing signal of the interrupt test key; the main control module 101 is also used to send a stop power supply signal to the power supply module 103 when receiving the interrupt control signal, so that the power supply module 103 stops supplying power to the display screen, thereby realizing control of the test process.

[0084] In a specific embodiment, the main control module 101 can monitor the status of the [Interrupt Test Button] in real time. If the [Interrupt Test Button] is not pressed, the device continues to test the tested display until the test is completed. At any time during the test, if the [Interrupt Test Button] is detected, the test is interrupted and the process jumps to the stage after initialization. At the end of this stage, the main control module 101 stops monitoring the [Interrupt Test Button] and stops supplying power to the test display power supply module 103.

[0085] Therefore, the power supply module 103 provided in the present application is used to provide a driving voltage to the display screen under test; the indicator light control module 106 is used to control the status of the display screen category indicator light, the test result indicator light and the setting indicator light 208; the power supply module 104 is used to connect to an external power supply and convert it into the power supply voltage required by the main control module 101; the current detection module 102 is used to detect the working current of the display screen under test and feed it back to the main control module 101; the main control module 101 is used to control each module to work according to the program requirements; the display screen driver module 108 is used to control the display screen to display content; the buzzer driver module is used to control the working status of the buzzer after the test is completed; the button driver module 105 is used to feed back the press signals of the test button, the display button, and the interrupt test button to the main control module 101.

[0086] During the actual test process, before obtaining the category information of one or more display screens to be tested, the test device may be initialized so that all modules in the initialized test device are in an initial state. The initial state may include: no display screen is placed in the test display screen placement area 201, all indicator lights are off, the display window displays the word "ready", all buttons are in their initial state, and the buzzer is not working.

[0087] like Figure 3 As shown in FIG. 1 , an example diagram of a control panel of a test device provided in the present application is shown. The test device may include a test display placement area 201, a test result indicator light, a display category indicator light, a setting indicator light 208, a display screen, a display screen button, a test button, and a built-in buzzer. The description of each part is as follows:

[0088] Test display placement area 201: used to place the display screen under test, which can adopt a contoured design to match the display screen under test; test result indicator light: used to indicate the test result after the matching is completed, with a test success indicator light 203 on the left and a test failure indicator light 204 on the right; display screen category indicator light: used to indicate which voltage and current setting category the tested display screen with an OK test result meets after the matching is completed; setting indicator light 208: used to indicate that the current state is the set state during the process of setting the voltage and current of each category; display window 206: used to display the current state in normal state, and to display the set voltage and current of each category during setting; window button 207: used to adjust the set voltage and current of each category during setting; test button: used to start and interrupt the test; buzzer: used to prompt the end of matching and test results.

[0089] For ease of understanding, the following describes the test method in detail using the display categories to be tested, including display category 1 and display category 2:

[0090] Voltage sorting: Display category 2 is greater than display category 1;

[0091] The main control module reads the detection current of the display screen type with the test start parameter of 1:

[0092] Lower limit of display class 1: 040.0mA

[0093] Upper limit for display class 1: 055.0mA

[0094] Lower limit of display class 2: 090.0mA

[0095] Upper limit for display class 2: 100.0mA

[0096] On the basis of the upper and lower limits of the current, the upper limit and lower limit of the detection current are determined;

[0097] Lower limit of display class 1: 034.0mA

[0098] Upper limit of display category 1: 063.3mA

[0099] Lower limit of display class 2: 076.5mA

[0100] Upper limit of display category 2: 115.0mA

[0101] Therefore, the lower limit range of display category 1 is 034.0~040.0, and the upper limit range is 055.0~063.3. The lower limit range of display category 2 is 076.5~090.0, and the upper limit range is 100.0~115.0.

[0102] The main control module controls the test display screen power supply module to output 6.35V voltage;

[0103] The current detection module reads the operating current of the display screen under test and feeds it back to the main control module;

[0104] The main control module matches the operating current with the detection current to determine which current range the operating current falls within:

[0105] Match result 0: The working current of the tested display is greater than 200mA

[0106] Matching result 1: The operating current of the tested display is less than 76.5mA

[0107] Matching result 2: The operating current of the tested display is ≥76.5mA and <90mA

[0108] Matching result 3: The operating current of the tested display is ≥90mA and ≤100mA

[0109] Matching result 4: The operating current of the tested display is greater than 100mA and less than or equal to 115mA

[0110] Match result 5: The operating current of the tested display is greater than 115mA and less than 200mA

[0111] When the matching result is 0, jump to the test completion stage;

[0112] When matching result 1 is met, continue with subsequent testing;

[0113] When matching results 2, 3, 4, and 5 are met, jump to the test completion stage;

[0114] Subsequent tests include: the main control module controls the power supply module to output 18V voltage;

[0115] The current detection module reads the operating current of the display screen under test and feeds it back to the main control module;

[0116] The main control module matches the operating current with the detection current to determine which current range the operating current falls within:

[0117] Match result 0: The working current of the tested display is greater than 200mA

[0118] Matching result 6: The operating current of the tested display is less than 34mA

[0119] Matching result 7: The operating current of the tested display is ≥34mA and <40mA

[0120] Matching result 8: The operating current of the tested display is ≥40mA and ≤55mA

[0121] Matching result 9: The operating current of the tested display is greater than 55mA and less than or equal to 63.3mA

[0122] Matching result 10: The operating current of the tested display is greater than 63.3mA and less than 200mA

[0123] When the matching result is 0, jump to the test completion stage;

[0124] When matching results 6, 7, 8, 9, and 10 are met, jump to the test completion stage;

[0125] Among them, the matching result 0 means: the operating current exceeds the upper limit;

[0126] Match result 2 means: the operating current of the tested display exceeds the current setting range of display category 2 and is between the lower limit current and the lower limit extreme value;

[0127] Match result 3 means: the operating current of the tested display is within the current setting range of display category 2;

[0128] Match result 4 means: the current of the tested display exceeds the current setting range of display category 2 and is between the upper current limit and the upper limit value;

[0129] Match result 5: The current of the tested display is greater than the upper limit of the current of display category 2;

[0130] Match result 6: The current of the tested display is less than the lower current limit of display category 1;

[0131] Match result 7: The current of the measured display exceeds the current setting range of display category 1 and is between the lower current limit and the lower limit value;

[0132] Matching result 8: The current of the tested display is within the current setting range of display category 1;

[0133] Match result 9: The current of the measured display exceeds the current setting range of display category 1 and is between the upper current limit and the upper limit value;

[0134] Match result 10: The current of the tested display is greater than the upper limit of display category 1;

[0135] Of the above matching results, only matching results 3 and 8 meet the matching success criteria. Matching result 1 is a matching failure, and the next-order driving voltage must be used to continue testing the current display under test. Other matching results, excluding those that are matching success and matching failure, are considered matching failures.

[0136] It should be noted that in this application scenario, the matching result is set as follows: when the working current exceeds the upper limit of the detection current, or the working current is between the lower limit of the detection current and the lower limit extreme value, the matching is determined to be completed. This is to avoid damage to the current display screen to be tested due to the subsequent larger driving voltage test. Therefore, although it is within the deviation range, it is not in compliance with the specification.

[0137] Table 1 below shows how to control the test result indicator, display type indicator, and buzzer based on the matching results:

[0138] Table 1

[0139]

[0140] In summary, the display screen testing device provided by the embodiments of the present invention, regardless of the display screen category being tested, matches the operating current of the tested display screen with the detection current corresponding to the first-order display screen category, determines whether the tested display screen belongs to the first-order display screen category, outputs the matching result, and determines the display screen's optimal state based on the operating current. This device can test multiple display screen categories while ensuring the safety of multiple display screen tests, thus possessing high application value.

[0141] In the second aspect, based on the same inventive concept, an embodiment of the present invention provides a display screen testing method, specifically, as follows Figure 5 As shown, the method includes the following steps S101 to S102:

[0142] Step S101, upon receiving a connection signal from a display screen to be tested, using the driving voltage and detection current corresponding to the first-ranked display screen category in a preset category test information library as target driving voltage and target detection current, respectively, and executing a test step: providing the target driving voltage to the display screen to be tested, detecting an operating current of the display screen to be tested under the target driving voltage, comparing the operating current with the target detection current, and determining whether the target driving voltage matches the display screen to be tested based on the comparison result, thereby completing the test step;

[0143] Step S102: If yes, a test result is obtained based on the comparison result; if not, the driving voltage and detection current corresponding to the display screen category in the next sort order in the test information library are used as the target driving voltage and target detection current, and the test step is performed again until the test result is obtained, and the test result is displayed through the human-computer interaction panel; wherein the category test information library includes: multiple display screen categories and the driving voltage and detection current corresponding to each display screen category, and the multiple display screen categories are sorted in order of driving voltage from low to high.

[0144] As an optional embodiment, before receiving the connection signal of the display screen to be tested, it may also include: obtaining category information of one or more display screens to be tested; determining the driving voltage and detection current corresponding to different display screen categories based on the category information, and sorting them in order from low to high according to the driving voltage to obtain a category test information library.

[0145] As an optional embodiment, the method further includes: if an interrupt signal is received, stopping the power supply to the power supply module, and jumping to the step of obtaining category information of one or more display screens to be tested.

[0146] The embodiment of the present invention provides a display screen testing method, the implementation principle and technical effects of which are the same as those of the aforementioned device embodiment. For the sake of brief description, for matters not mentioned in the method embodiment, reference can be made to the corresponding contents in the aforementioned device embodiment.

[0147] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, apparatus, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0148] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (apparatus), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as a combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1A module that specifies functions in one or more boxes.

[0149] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction module, which is implemented in the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0150] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0151] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0152] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A display screen testing device, characterized in that: include: Main control board and human-computer interaction panel; The main control board is configured to, upon receiving a connection signal from the display screen to be tested, use the driving voltage and detection current corresponding to the display screen category in the first order in the preset category test information library as the target driving voltage and target detection current, respectively, and perform a test step: providing the target driving voltage to the display screen to be tested, detecting an operating current of the display screen to be tested under the target driving voltage, comparing the operating current with the target detection current, and determining whether the target driving voltage matches the display screen to be tested based on the comparison result, thereby completing the test step; If yes, obtaining a test result based on the comparison result; if no, using the driving voltage and detection current corresponding to the next display screen category in the category test information library as the target driving voltage and target detection current, and performing the test step again until the test result is obtained; wherein the category test information library includes: multiple display screen categories and the driving voltage and detection current corresponding to each display screen category, and the multiple display screen categories are sorted in order of driving voltage from low to high; The human-computer interaction panel is electrically connected to the main control board and is used to display the test results to the user.

2. The device according to claim 1, wherein The main control board is also used to obtain category information of one or more display screens to be tested, and based on the category information, determine the driving voltage and detection current corresponding to different display screen categories, and sort them in order from low to high according to the driving voltage to establish a category test information library.

3. The device according to claim 1, wherein The main control board includes a main control module, a current detection module and a power supply module, the main control module is electrically connected to the current detection module, the power supply module and the human-computer interaction panel respectively, and the power supply module and the current detection module are used to connect to the display screen to be tested; The main control module is configured to, upon receiving a connection signal from the display screen to be tested, use the driving voltage and detection current corresponding to the display screen category in the first order in the preset category test information library as the target driving voltage and target detection current respectively; The power supply module is used to provide the target driving voltage to the display screen to be tested, and the current detection module is used to detect the operating current of the display screen to be tested under the target driving voltage; The main control module is further configured to compare the operating current with the target detection current, and determine whether the target driving voltage matches the display screen to be tested based on the comparison result; if so, a test result is obtained based on the comparison result; if not, the driving voltage and detection current corresponding to the next-ranked display screen category in the category test information library are used as the target driving voltage and target detection current, until the test result is obtained.

4. The device according to claim 3, wherein The main control board also includes a key drive module, which is electrically connected to the main control module. The human-computer interaction panel includes a display placement area and a test start button provided on the panel, and the test start button is electrically connected to the key drive module. The display screen placement area is used to place the display screen to be tested, the test start button is used to control the start and stop of the test, and the button drive module is used to send the received start or stop signal to the main control module.

5. The device according to claim 4, characterized in that The main control board also includes an indicator light control module, which is electrically connected to the main control module. The human-computer interaction panel also includes a test success indicator light and a test failure indicator light, and the test result indicator light is electrically connected to the indicator light control module. The main control module is further used to send an indicator light control instruction to the indicator light control module according to the test result; the indicator light control module is used to control the display of the test success indicator light and the test failure indicator light according to the indicator light control instruction.

6. The device according to claim 5, characterized in that The human-computer interaction panel further includes a plurality of category indicator lights, and the plurality of category indicator lights are electrically connected to the indicator light control module; The main control module is further configured to send a category control instruction to the indicator light control module according to the test result; the indicator light control module is further configured to control the display of the multiple category indicator lights according to the category control instruction.

7. The device according to claim 4, wherein The main control board further includes a display screen driver module, the display screen driver module is electrically connected to the main control module, and the human-computer interaction panel further includes a setting window, the display screen driver module is electrically connected to the setting window; The setting window is used to send a display control signal to the main control module if it receives a window button press signal; the main control module is also used to send a display control signal to the display driver module; the display driver module is used to control the display content of the setting window according to the display control signal.

8. The device according to claim 3, wherein The main control board further includes a buzzer control module, which is electrically connected to the main control module. The human-computer interaction panel further includes a buzzer, which is electrically connected to the buzzer control module. The main control module is further configured to send a buzzer control instruction to the buzzer control module according to the test result; and the buzzer control module is configured to control the buzzer according to the buzzer control instruction.

9. A display screen testing method, characterized in that: Applied to the main control board according to any one of claims 1 to 8, the method comprises: Upon receiving a connection signal from the display screen to be tested, the driving voltage and detection current corresponding to the display screen category in the first order in the preset category test information library are used as target driving voltage and target detection current, respectively, and a test step is performed: the target driving voltage is provided to the display screen to be tested, and an operating current of the display screen to be tested under the target driving voltage is detected, the operating current is compared with the target detection current, and whether the target driving voltage matches the display screen to be tested is determined based on the comparison result, thereby completing the test step; If yes, a test result is obtained based on the comparison result; if no, the driving voltage and detection current corresponding to the next display screen category in the category test information library are used as the target driving voltage and target detection current, and the test steps are performed again until the test result is obtained, and the test result is displayed through the human-computer interaction panel; The category test information library includes: multiple display screen categories and the driving voltage and detection current corresponding to each display screen category, and the multiple display screen categories are sorted in order of driving voltage from low to high.

10. The method according to claim 9, wherein Before receiving the connection signal of the display screen to be tested, the method further includes: Get the category information of one or more display screens to be tested; According to the category information, the driving voltages and detection currents corresponding to different display screen categories are determined, and the driving voltages and detection currents are sorted in order from low to high to establish a category test information library.

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