Display screen split-screen detection system and detection method thereof

Abstract

The invention relates to the technical field of display screen detection, and discloses a display screen split screen detection system which comprises a graphics processor, a synchronous step-down converter, a debugging serial port connected with the graphics processor, a liquid crystal screen chip, a first USB interface, a second USB interface, an EDP connector, a memory card, a wireless connection module, a volume adjustment key, a first memory chip, a second memory chip and a third USB interface. The liquid crystal screen chip is connected with a display screen; by using a split screen detection technology, a large-size LCD is partitioned and independently displayed for automatic testing, so that the production testing efficiency of a factory is improved, defective products can be found in time, and the problems that the price of a large screen is relatively high, and more additional overall cost can be increased by building testing equipment and environment are solved; in addition, compared with the traditional test application, the test system has high integration level, and the problems of hidden dark spots, bright spots, dead pixels, uneven color display and the like can be found more easily.

Description

Technical Field

[0001] The present invention relates to the field of display screen detection technology, and in particular to the field of display screen split-screen detection, and specifically to a display screen split-screen detection system and a detection method thereof. Background Art

[0002] Display testing refers to the process of comprehensively evaluating the performance, quality and reliability of a display. This process covers multiple aspects, from appearance inspection to performance parameter testing, to ensure that the display can provide excellent display effects and stable performance in various usage scenarios.

[0003] After searching, the patent with application number CN202310772461.X discloses a display screen detection system and a display screen detection method, which obtains the display screen to be detected, places the display screen to be detected on the detection platform, and stores the original appearance photos of the display screen to be detected and the factory preset performance parameter data to the cloud platform; the display screen to be detected placed on the detection platform is photographed by the machine vision equipment arranged on the detection platform to obtain the appearance photos of the display screen to be detected, and the appearance photos of the display screen to be detected are stored in the cloud platform, and the appearance photos of the display screen to be detected are compared with the original photos of the display screen to be detected stored in the cloud platform through the visual recognition algorithm. The invention can greatly improve production efficiency and reduce errors and time costs caused by manual operation by performing display screen detection in an automated manner. The use of advanced detection technology and algorithms can more accurately detect problems in the display screen, thereby improving product quality.

[0004] Split-screen detection technology is mainly used for the detection of large-size LCD screens to ensure the consistency and quality of the display effect of each screen. As the screen size becomes larger and larger, the detection of screen brightness uniformity, color consistency, no dead pixels, no bright spots, no color difference, etc. becomes more and more important;

[0005] Currently, it has always been a challenge to detect the brightness and color consistency of large-size LCD displays during the entire test, especially between the edge and center areas. In addition, the large screen itself is relatively expensive, and the construction of test equipment and environment will also increase the overall cost. Therefore, we need to propose a display split-screen detection system and its detection method. Summary of the invention

[0006] The purpose of the present invention is to provide a display screen split-screen detection system and a detection method thereof. Compared with the traditional manual or automated visual inspection of LCDs, by using split-screen detection technology, large-size LCDs are partitioned and displayed separately for automated testing, which not only improves the factory production test efficiency, but also can promptly detect defective products and solves the problem that the large screen itself is relatively expensive, and the construction of test equipment and environment will also increase the overall cost. In addition, compared with traditional test applications, the test system has a high degree of integration and is more likely to detect hidden dark spots, bright spots, bad spots, uneven color display, etc., thereby ensuring factory production quality and solving the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a display screen split detection system, comprising:

[0008] A control and management module for realizing screen splitting and display management and maintenance;

[0009] A content editing and playback module for previewing and displaying content on a display screen;

[0010] A monitoring and diagnosis module for real-time monitoring of the operating status of the display screen and for diagnosing faults of the display screen;

[0011] Network and communication modules for connecting display screens and controlling display screens;

[0012] A self-test and calibration module for testing display performance and calibrating display parameters;

[0013] The content editing and playing module, the monitoring and diagnosis module, the network and communication module, and the network and communication module are all electrically connected to the control and management module.

[0014] Preferably, the control and management module includes:

[0015] Control unit: responsible for dividing the input signal source into multiple parts according to a predetermined method, and accurately sending these parts to each split-screen area of ​​the display screen;

[0016] Management unit: Provides a user-friendly interface that enables operators to easily configure split-screen layouts and adjust display parameters.

[0017] Preferably, the content editing and playing module includes:

[0018] Content editing unit: allows users to create, edit and preview the content to be displayed according to their needs, so that users can produce display content that meets their requirements;

[0019] Playback control unit: responsible for sending the edited content to the display screen for display according to the predetermined play list or real-time instructions.

[0020] Preferably, the monitoring and diagnosis module includes:

[0021] Screen monitoring unit: monitors the operating status of the display screen in real time, including the brightness, color uniformity, and pixel health status of each split-screen area, and promptly detects and handles potential problems to avoid the impact of faults on the display effect;

[0022] Fault diagnosis and repair unit: When the display screen fails, the fault diagnosis and repair tool can provide a detailed diagnostic report to help users or technicians quickly locate the cause of the problem and repair it.

[0023] Preferably, the network and communication module includes:

[0024] Network transmission unit: supports various network transmission protocols to ensure that the display screen can stably receive input signals from different sources;

[0025] Remote Control Unit: Allows the user to remotely access and control the display via the network.

[0026] Preferably, the self-test and calibration module comprises:

[0027] Self-check unit: When the system starts or periodically executes the self-check procedure to check whether the functions of the display screen are working properly;

[0028] Calibration unit: used to accurately calibrate the color and brightness parameters of the display.

[0029] Based on the above-described display screen split detection system, the present invention also provides a display screen split detection method, comprising the following steps:

[0030] S1. Backlight function test: Automatically adjust the backlight brightness by adjusting the duty cycle of the backlight pwm from 0 to 100%. Check with the naked eye whether the brightness changes to determine whether the backlight module is normal.

[0031] S2. Display function test: Divide the LCD display screen into four display screens, and click any area of ​​the four display screens to switch the display colors of white, black, red, green, and blue. Whether the LCD display is normal can be judged by whether the display is abnormal.

[0032] Preferably, in step S1, the backlight function test includes the following process:

[0033] S11. Backlight uniformity test: Use a luminance meter or colorimeter to measure the brightness values ​​of different areas of the display screen under a full white screen;

[0034] S12, backlight brightness test: by adjusting the brightness setting of the display screen, use a brightness meter to measure and record the actual brightness values ​​at different brightness levels;

[0035] S13, Backlight color reproduction test: Use a colorimeter to display a standard color pattern and measure the actual color values, compare them with the standard color values, and evaluate the accuracy and consistency of color reproduction.

[0036] Preferably, in step S2, the display function test includes the following process:

[0037] S21, image display quality test: display a variety of image contents, switch the image color of the display screen, observe and record the display effect of the display screen;

[0038] S22, resolution and refresh rate test: adjust the resolution and refresh rate settings of the display, observe and record the display effect;

[0039] S23, split screen function test: display different colors on the four divided display screens, observe and record the display effect and stability in split screen mode.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] Compared with the traditional manual or automated visual inspection of LCDs, the present invention uses split-screen detection technology to partition large-size LCDs and display them separately for automated testing, which not only improves the efficiency of factory production testing, but also can detect defective products in a timely manner, and solves the problem that the large screen itself is relatively expensive, and the construction of test equipment and environment will also increase the overall cost.

[0042] In addition, compared with traditional test applications, this test system has a high degree of integration and is more likely to discover hidden dark spots, bright spots, bad spots, uneven color display and other problems, ensuring factory production quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a system block diagram of the present invention;

[0044] Figure 2 It is a system block diagram of each module of the present invention;

[0045] Figure 3 It is a flowchart of the present invention;

[0046] Figure 4 It is a schematic diagram of adjusting the backlight PWM duty cycle according to the present invention. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] See also Figure 1-4 The present invention provides a technical solution: a display screen split detection system, comprising:

[0049] A control and management module for realizing screen splitting and display management and maintenance;

[0050] A content editing and playback module for previewing and displaying content on a display screen;

[0051] A monitoring and diagnosis module for real-time monitoring of the operating status of the display screen and for diagnosing faults of the display screen;

[0052] Network and communication modules for connecting display screens and controlling display screens;

[0053] A self-test and calibration module for testing display performance and calibrating display parameters;

[0054] The content editing and playing module, the monitoring and diagnosis module, the network and communication module, and the network and communication module are all electrically connected to the control and management module.

[0055] The control and management module includes:

[0056] Control unit: responsible for dividing the input signal source into multiple parts in a predetermined manner and accurately sending these parts to the various split-screen areas of the display; it ensures the correct distribution and synchronous display of the content.

[0057] Management unit: provides a user-friendly interface, allowing operators to easily configure split-screen layouts and adjust display parameters. Display parameters include brightness, contrast, color, etc. The management unit is a bridge for interaction between users and the display, making the management and maintenance of the display simpler and more efficient.

[0058] The content editing and playing module includes:

[0059] Content editing unit: allows users to create, edit and preview the content to be displayed according to their needs. These tools usually include functions such as video editing, image processing, and text editing, allowing users to produce display content that meets their requirements;

[0060] Playback control unit: responsible for sending the edited content to the display screen for display according to the predetermined playlist or real-time instructions. The playback control unit ensures accurate playback and smooth switching of content, improving the audience's viewing experience.

[0061] The monitoring and diagnosis module includes:

[0062] Screen monitoring unit: monitors the operating status of the display screen in real time, including the brightness, color uniformity, and pixel health status of each split-screen area, and promptly detects and handles potential problems to avoid the impact of faults on the display effect;

[0063] Fault diagnosis and repair unit: When a display screen fails, the fault diagnosis and repair tool can provide a detailed diagnostic report to help users or technicians quickly locate the cause of the problem and repair it. This reduces the time for troubleshooting and improves the reliability and stability of the display screen.

[0064] The network and communication module includes:

[0065] Network transmission unit: supports various network transmission protocols to ensure that the display screen can stably receive input signals from different sources; this includes LAN, WAN and other network environments, so that the display screen can be flexibly connected to various systems.

[0066] Remote control unit: allows users to remotely access and control the display screen through the network. This remote control method allows users to manage and maintain the display screen in different locations, improving work efficiency and convenience.

[0067] The self-test and calibration module comprises:

[0068] Self-check unit: When the system starts or periodically executes the self-check procedure to check whether the various functions of the display are working normally; this includes hardware connection, software operation and other aspects to ensure that the display is in good working condition.

[0069] Calibration unit: used to accurately calibrate the color and brightness parameters of the display. Calibration can ensure that the display effect of the display reaches the best state and improve the viewing experience of the audience. At the same time, calibration also helps to extend the service life and stability of the display.

[0070] Based on the above-described display split-screen detection system, the present invention also provides a display split-screen detection method, which mainly divides the large-size LCD screen into 4 equal small areas. Each area can be clicked separately and cyclically display white, black, red, green and blue pure color pictures. By observing whether each area displays normally, it is judged whether the screen is a defective product, and by automatically or manually adjusting the backlight, it is observed whether the backlight brightness is uniform.

[0071] The following steps are involved:

[0072] S1. Backlight function test: The backlight brightness is automatically adjusted by adjusting the duty cycle of the backlight pwm from 0 to 100%. The brightness is checked by naked eyes to see if it changes to determine whether the backlight module is normal. If it is normal, click the test result / Result button to display the test success and highlight it in green. Figure 4 shown.

[0073] In step S1, the backlight function test includes the following process:

[0074] S11. Backlight uniformity test: Use a luminance meter or colorimeter to measure the brightness values ​​of different areas of the display screen under a full white screen;

[0075] S12, backlight brightness test: by adjusting the brightness setting of the display screen, use a brightness meter to measure and record the actual brightness values ​​at different brightness levels;

[0076] S13, Backlight color reproduction test: Use a colorimeter to display a standard color pattern and measure the actual color values, compare them with the standard color values, and evaluate the accuracy and consistency of color reproduction.

[0077] S2. Display function test: Divide the LCD display screen into four display screens, and click any area of ​​the four display screens to switch the display colors of white, black, red, green, and blue. Whether the LCD display is normal can be judged by whether the display is abnormal.

[0078] In step S2, the display function test includes the following process:

[0079] S21, image display quality test: display a variety of image contents, switch the image color of the display screen, observe and record the display effect of the display screen;

[0080] S22, resolution and refresh rate test: adjust the resolution and refresh rate settings of the display, observe and record the display effect;

[0081] S23, split screen function test: display different colors on the four divided display screens, observe and record the display effect and stability in split screen mode.

[0082] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A display screen split detection system, characterized in that: include: A control and management module for realizing screen splitting and display management and maintenance; A content editing and playback module for previewing and displaying content on a display screen; A monitoring and diagnosis module for real-time monitoring of the operating status of the display screen and for diagnosing faults of the display screen; Network and communication modules for connecting display screens and controlling display screens; A self-test and calibration module for testing display performance and calibrating display parameters; The content editing and playing module, the monitoring and diagnosis module, the network and communication module, and the network and communication module are all electrically connected to the control and management module.

2. A display screen split detection system according to claim 1, characterized in that: The control and management module includes: Control unit: responsible for dividing the input signal source into multiple parts according to a predetermined method, and accurately sending these parts to each split-screen area of ​​the display screen; Management unit: Provides a user-friendly interface that enables operators to easily configure split-screen layouts and adjust display parameters.

3. A display screen split detection system according to claim 1, characterized in that: The content editing and playing module includes: Content editing unit: allows users to create, edit and preview the content to be displayed according to their needs, so that users can produce display content that meets their requirements; Playback control unit: responsible for sending the edited content to the display screen for display according to the predetermined play list or real-time instructions.

4. A display screen split detection system according to claim 1, characterized in that: The monitoring and diagnosis module includes: Screen monitoring unit: monitors the operating status of the display screen in real time, including the brightness, color uniformity, and pixel health status of each split-screen area, and promptly detects and handles potential problems to avoid the impact of faults on the display effect; Fault diagnosis and repair unit: When the display screen fails, the fault diagnosis and repair tool can provide a detailed diagnostic report to help users or technicians quickly locate the cause of the problem and repair it.

5. A display screen split detection system according to claim 1, characterized in that: The network and communication module includes: Network transmission unit: supports various network transmission protocols to ensure that the display screen can stably receive input signals from different sources; Remote Control Unit: Allows the user to remotely access and control the display via the network.

6. A display screen split detection system according to claim 1, characterized in that: The self-test and calibration module comprises: Self-check unit: When the system starts or periodically executes the self-check procedure to check whether the functions of the display screen are working normally; Calibration unit: used to accurately calibrate the color and brightness parameters of the display.

7. A display screen split detection method, based on a display screen split detection system according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Backlight function test: Automatically adjust the backlight brightness by adjusting the duty cycle of the backlight pwm from 0 to 100%. Check with the naked eye whether the brightness changes to determine whether the backlight module is normal. S2. Display function test: Divide the LCD display screen into four display screens, and click any area of ​​the four display screens to switch the display colors of white, black, red, green, and blue. Whether the LCD display is normal can be judged by whether the display is abnormal.

8. A display screen split detection method according to claim 7, characterized in that: In step S1, the backlight function test includes the following process: S11. Backlight uniformity test: Use a luminance meter or colorimeter to measure the brightness values ​​of different areas of the display screen under a full white screen; S12, backlight brightness test: by adjusting the brightness setting of the display screen, use a brightness meter to measure and record the actual brightness values ​​at different brightness levels; S13, Backlight color reproduction test: Use a colorimeter to display a standard color pattern and measure the actual color values, compare them with the standard color values, and evaluate the accuracy and consistency of color reproduction.

9. A display screen split detection method according to claim 7, characterized in that: In step S2, the display function test includes the following process: S21, image display quality test: display a variety of image contents, switch the image color of the display screen, observe and record the display effect of the display screen; S22, resolution and refresh rate test: adjust the resolution and refresh rate settings of the display, observe and record the display effect; S23, split screen function test: display different colors on the four divided display screens, observe and record the display effect and stability in split screen mode.

Images