Brightness testing device for LCD liquid crystal screen production

Abstract

The utility model relates to the technical field of quality detection in the LCD liquid crystal screen production process, and discloses a brightness testing device for LCD liquid crystal screen production, which comprises a workbench and a motor, the top of the workbench is fixedly connected with a testing platform, the inner wall of the testing platform is provided with a liquid crystal screen, and the motor is connected with the liquid crystal screen. A plurality of first hinges are fixedly connected to the outer wall of the testing platform, a fixing frame is slidably connected to the outer wall of the testing platform, a first moving rod and a second moving rod are slidably connected to the inner wall of the fixing frame, and a first lead screw and a second lead screw are arranged on the outer wall of the fixing frame; the outer wall of the first lead screw and the outer wall of the second lead screw are both fixedly connected with bevel gears, and a shading assembly is arranged on the outer wall of the fixing frame. According to the utility model, through the high-precision brightness sensor, the full-area scanning mode and the analysis function of the data processing module in the screen, a test report can be quickly generated, the uniformity and accuracy of brightness measurement are ensured, and the test efficiency and precision are improved.

Description

Technical Field

[0001] This utility model relates to the field of quality inspection technology in the production process of LCD screens, and in particular to a brightness testing device for LCD screen production. Background Technology

[0002] As a core component of modern display technology, LCD screens are widely used in electronic products such as televisions, monitors, and mobile phones. With consumers' increasing demands for display quality, the brightness uniformity and accuracy of brightness values ​​of LCD screens have become important indicators for measuring product quality.

[0003] Brightness testing is an essential step in the production of LCD screens. The accuracy of the test results directly affects the final quality of the product and the user experience. Optical measurement equipment is commonly used in the industry to test the brightness of LCD screens, but there is still considerable room for improvement in the testing efficiency and accuracy of the equipment. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a brightness testing device for LCD screen production, aiming to improve the problems of poor efficiency and accuracy, and low production efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a brightness testing device for LCD screen production, comprising a worktable and a motor. A testing platform is fixedly connected to the top of the worktable. An LCD screen is installed on the inner wall of the testing platform. Multiple first hinges are fixedly connected to the outer wall of the testing platform. Multiple second hinges are slidably connected to the outer walls of the multiple first hinges. Hinge shafts are rotatably connected to the inner walls of the first hinges. A fixed frame is slidably connected to the outer wall of the testing platform. A first moving rod and a second moving rod are slidably connected to the inner wall of the fixed frame. Multiple brightness sensors are installed on the outer walls of both the first and second moving rods. A first lead screw and a second lead screw are respectively provided on the outer wall of the fixed frame. Helical gears are fixedly connected to the outer walls of both the first and second lead screws. The helical gears are fixedly connected to the output end of the motor. A light-shielding component is provided on the outer wall of the fixed frame.

[0006] Through the above technical solution: the test platform on the top of the workbench is connected to the fixed frame through a hinge structure; the brightness sensor installed on the first and second moving rods inside the fixed frame is driven by a motor and a helical gear driven by a lead screw to achieve high-precision full-area scanning in the horizontal and vertical directions.

[0007] As a further description of the above technical solution:

[0008] Preferably, the light-shielding assembly includes a light-shielding cover, which is fixedly connected to the outer wall of the mounting frame, and a handle is installed on the outer wall of the light-shielding cover.

[0009] The above technical solution provides a light shield to isolate ambient light interference and a handle for easy opening and closing of the mounting bracket and testing platform.

[0010] As a further description of the above technical solution:

[0011] Preferably, a screen is installed on the outer wall of the light shield.

[0012] The above technical solution allows staff to easily check the data output by the sensors in real time using the built-in data processing module on the screen.

[0013] As a further description of the above technical solution:

[0014] Preferably, the plurality of helical gears are meshed with each other.

[0015] The above technical solution involves the simultaneous movement of helical gears to ensure that the sensor scans the LCD screen uniformly.

[0016] As a further description of the above technical solution:

[0017] Preferably, the motor is installed inside the sunshade, and both the first lead screw and the second lead screw are rotatably connected to the inner wall of the sunshade.

[0018] With the above technical solution, the motor and lead screw will not interfere with the stroke of the moving rod because they are inside the light shield outside the fixed frame.

[0019] As a further description of the above technical solution:

[0020] Preferably, the first moving rod and the second moving rod are threadedly connected to the outer walls of the first lead screw and the second lead screw, respectively.

[0021] With the above technical solution, two lead screws drive the moving rod to move simultaneously.

[0022] As a further description of the above technical solution:

[0023] Preferably, the light shields are slidably connected to the outer walls of the test platform and the workbench, respectively.

[0024] The above technical solution involves closing the light shield so that it fits against the workbench and the testing platform to isolate the light inside the testing platform.

[0025] As a further description of the above technical solution:

[0026] Preferably, a plurality of the second hinges are fixedly connected to the outer wall of the fixing frame and to the outer wall of the hinge shaft.

[0027] Through the above technical solution, the first hinge and the second hinge rotate through the hinge axis to freely switch the connection between the test platform and the fixed frame.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the high-precision brightness sensor and full-area scanning method improve the testing accuracy and efficiency. The positioning capability of the dual lead screw and dual-axis motion ensures the accuracy of the test data. The analysis function of the data processing module in the screen can quickly generate test reports, improve production efficiency, ensure the uniformity and accuracy of brightness measurement, and improve testing efficiency and accuracy.

[0030] 2. In this utility model, the light-blocking design of the light shield's closed structure achieves light isolation of the test area, eliminates interference from external light sources on the brightness sensor, and improves the stability and accuracy of the test results. Attached Figure Description

[0031] Figure 1 This is a three-dimensional schematic diagram of a brightness testing device for LCD screen production proposed in this utility model;

[0032] Figure 2 This is a three-dimensional schematic diagram of a brightness testing device for LCD screen production proposed in this utility model;

[0033] Figure 3 This is a three-dimensional schematic diagram of the fixing frame of the brightness testing device for LCD screen production proposed in this utility model;

[0034] Figure 4 This is a three-dimensional schematic diagram of the lead screw assembly of a brightness testing device for LCD screen production proposed in this utility model;

[0035] Figure 5 This is a three-dimensional schematic diagram of the moving rod assembly of a brightness testing device for LCD screen production proposed in this utility model.

[0036] Legend:

[0037] 1. Workbench; 2. Test platform; 3. LCD screen; 4. First hinge; 5. Second hinge; 6. Hinge shaft; 7. Fixture; 8. First moving rod; 9. Second moving rod; 10. Brightness sensor; 11. First lead screw; 12. Second lead screw; 13. Helical gear; 14. Motor; 15. Light shielding assembly; 1501. Light shield; 1502. Handle; 16. Screen. Detailed Implementation

[0038] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] Reference Figure 1 , Figure 3 , Figure 4 This utility model provides an embodiment of a brightness testing device for LCD screen production, comprising a workbench 1 and a motor 14. A testing platform 2 is fixedly connected to the top of the workbench 1. An LCD screen 3 is installed on the inner wall of the testing platform 2. A plurality of first hinges 4 are fixedly connected to the outer wall of the testing platform 2. A plurality of second hinges 5 are slidably connected to the outer walls of the plurality of first hinges 4. A hinge shaft 6 is rotatably connected to the inner wall of the first hinges 4. A fixed frame 7 is slidably connected to the outer wall of the testing platform 2. A first moving rod 8 and a second moving rod 9 are slidably connected to the inner wall of the fixed frame 7. A plurality of brightness sensors 10 are installed on the outer walls of the first moving rods 8 and the second moving rods 9. A first lead screw 11 and a second lead screw 12 are respectively provided on the outer wall of the fixed frame 7. A helical gear 13 is fixedly connected to the outer walls of the first lead screw 11 and the second lead screw 12. The helical gear 13 is fixedly connected to the output end of the motor 14. A light-shielding component 15 is provided on the outer wall of the fixed frame 7.

[0040] Specifically, the test platform 2 on the top of the workbench 1 is equipped with an LCD screen 3 to ensure the stability of the screen position during testing. The first hinge 4 connected to the test platform 2 forms a hinge structure with the second hinge 5 through the hinge shaft 6. The fixed frame 7 can be opened and closed by rotating the hinge shaft 6. When opened, the internal structure can be maintained. The outer walls of the first moving rod 8 and the second moving rod 9 on the inner wall of the fixed frame 7 are equipped with uniformly distributed brightness sensors 10, which can collect high-density and high-precision brightness data on the surface of the LCD screen 3, avoid local deviations in single-point measurement, and improve the spatial uniformity of brightness collection. The helical gears 13 on the outer walls of the first lead screw 11 and the second lead screw 12 on the outer wall of the fixed frame 7 are fixed to the output end of the motor 14. When the motor 14 starts, the first lead screw 11 and the second lead screw 12 are driven to rotate synchronously through the two helical gears 13, so that the first moving rod 8 and the second moving rod 9, which are respectively threaded on the lead screw, move linearly along the horizontal X-axis and the vertical Y-axis, forming a full-area scan and realizing full-coverage measurement of the LCD screen surface row by row and column by column.

[0041] Reference Figure 2 The light-shielding assembly 15 includes a light-shielding cover 1501, which is fixedly connected to the outer wall of the fixing frame 7. A handle 1502 is installed on the outer wall of the light-shielding cover 1501.

[0042] Specifically, the light shield 1501 is made of black acrylic material, with a smooth inner wall that absorbs light, effectively isolating external light and preventing stray light reflection from interfering with the acquisition accuracy of the brightness sensor 10. When the brightness sensor 10 is scanning, the light shield 1501 always covers the test space between the LCD screen 3 and the sensor, achieving physical isolation of ambient light. The handle 1502 allows the operator to adjust the initial position of the light shield 1501 before starting the equipment, ensuring that the light shield is aligned with the test platform 2. The fixing bracket 7 can also be opened and closed freely.

[0043] Reference Figure 2 A screen 16 is installed on the outer wall of the sunshade 1501;

[0044] Specifically, the screen 16 has a built-in data processing module that can dynamically display the brightness data collected by the brightness sensor 10, the brightness analysis results of the LCD screen 3, and the brightness value in real time. Staff can intuitively obtain test results without having to read the background data, thus improving production efficiency.

[0045] Reference Figure 4 , Figure 5 Multiple helical gears 13 mesh with each other;

[0046] Specifically, one of the helical gears 13 is driven by the motor 14, and the helical gear 13 drives the other helical gear 13 so that the first moving rod 8 and the second moving rod 9 move simultaneously to perform uniform scanning of the LCD screen 3.

[0047] Reference Figure 4 The motor 14 is installed inside the sunshade 1501, and the first lead screw 11 and the second lead screw 12 are both rotatably connected to the inner wall of the sunshade 1501.

[0048] Specifically, the motor 14 drives the helical gear 13 to rotate inside the light shield 1501, thereby simultaneously driving the motion rod to move.

[0049] Reference Figure 4 The first moving rod 8 and the second moving rod 9 are respectively threaded to the outer walls of the first lead screw 11 and the second lead screw 12;

[0050] Specifically, the two helical gears 13 mesh with each other to simultaneously drive the first moving rod 8 and the second moving rod 9, ensuring that the trajectory of the brightness sensor 10 is consistent during full-area scanning.

[0051] Reference Figure 2 The light shield 1501 is slidably connected to the outer walls of the test platform 2 and the workbench 1 respectively;

[0052] Specifically, when working, the light shield 1501 is closed, and the light shield 1501 fits against the top of the test platform 2 and the workbench 1, while also covering the fixing frame 7 to block light.

[0053] Reference Figure 2 Multiple second hinges 5 are fixedly connected to the outer wall of the fixed frame 7 and to the outer wall of the hinge shaft 6;

[0054] Specifically, the hinge axis 6 between the first hinge 4 and the second hinge 5 serves a fixing function, allowing the first hinge 4 and the second hinge 5 to rotate freely to separate the fixing frame 7 from the test platform 2.

[0055] Working principle: The test platform 2 on the top of the workbench 1 fixes the LCD screen 3. The hinge of the first hinge 4 and the second hinge 5 is adjusted by the hinge shaft 6 to open and close the fixing frame 7. After the LCD screen 3 is fixed, the fixing frame 7 is closed. The motor 14 drives the helical gear 13 to mesh and transmit. The helical gear 13 drives another helical gear 13 to rotate, which in turn drives the first lead screw 11 and the second lead screw 12 to rotate. This causes the first moving rod 8 and the second moving rod 9, which are threaded to the first lead screw 11 and the second lead screw 12, to move linearly along the horizontal X-axis and the vertical Y-axis, respectively, driving the brightness sensor 10 on the inner wall of the fixing frame 7 to scan. During the movement, the brightness sensor 10 collects the brightness signal in real time and transmits it to the screen 16.

[0056] The handle 1502 on the outside of the light shield 1501 is covered with anti-slip rubber texture, making it easy for staff to hold and apply force with one hand to open and close the light shield 1501. The light shield 1501 is made of black acrylic sheet with a light-absorbing coating sprayed on the inner layer and elastic sealing strips installed on the edges. When closed, it forms a fully enclosed space, effectively blocking ambient light interference. The screen 16 has a built-in data processing module that displays the brightness uniformity percentage, brightness value curves of each area, and scanning progress bar.

[0057] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A brightness testing device for LCD screen production, comprising a worktable (1) and a motor (14), characterized in that: The top of the workbench (1) is fixedly connected to a test platform (2). The inner wall of the test platform (2) is equipped with an LCD screen (3). The outer wall of the test platform (2) is fixedly connected to multiple first hinges (4). The outer walls of the multiple first hinges (4) are slidably connected to multiple second hinges (5). The inner walls of the first hinges (4) are rotatably connected to hinge shafts (6). The outer wall of the test platform (2) is slidably connected to a fixed frame (7). The inner walls of the fixed frame (7) are slidably connected to a first moving rod (8) and a second moving rod (9). The outer walls of the first moving rod (8) and the second moving rod (9) are each equipped with multiple brightness sensors (10). The outer walls of the fixed frame (7) are respectively provided with a first lead screw (11) and a second lead screw (12). The outer walls of the first lead screw (11) and the second lead screw (12) are both fixedly connected to helical gears (13). The helical gears (13) are fixedly connected to the output end of a motor (14). The outer walls of the fixed frame (7) are provided with a light-shielding component (15).

2. The brightness testing device for LCD screen production according to claim 1, characterized in that: The light-shielding assembly (15) includes a light-shielding cover (1501), which is fixedly connected to the outer wall of the fixing frame (7), and a handle (1502) is installed on the outer wall of the light-shielding cover (1501).

3. The brightness testing device for LCD screen production according to claim 2, characterized in that: A screen (16) is installed on the outer wall of the light shield (1501).

4. The brightness testing device for LCD screen production according to claim 1, characterized in that: The plurality of helical gears (13) are meshed with each other.

5. The brightness testing device for LCD screen production according to claim 1, characterized in that: The motor (14) is installed inside the sunshade (1501), and the first lead screw (11) and the second lead screw (12) are rotatably connected to the inner wall of the sunshade (1501).

6. The brightness testing device for LCD screen production according to claim 1, characterized in that: The first moving rod (8) and the second moving rod (9) are respectively threaded to the outer walls of the first lead screw (11) and the second lead screw (12).

7. The brightness testing device for LCD screen production according to claim 2, characterized in that: The light shield (1501) is slidably connected to the outer walls of the test platform (2) and the workbench (1).

8. The brightness testing device for LCD screen production according to claim 1, characterized in that: Multiple second hinges (5) are fixedly connected to the outer wall of the fixing frame (7) and to the outer wall of the hinge shaft (6).

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