LCD panel bonding gap detection device

Abstract

This utility model relates to the field of liquid crystal panel testing technology, and in particular to a liquid crystal panel bonding gap testing device. It includes a cabinet, a blower fixed to the top of the cabinet, a filter assembly located near the blower, and a housing fixed to the top of the cabinet. The filter assembly includes a box fixed to the top of the cabinet, a cover plate snapped onto the top of the box, an air inlet hood inserted into the top of the cabinet, a dispersion tube inserted into the side wall of the cabinet, and a sealing door rotatably connected to the side wall of the cabinet away from the dispersion tube. Compared to traditional liquid crystal panel bonding gap testing devices, this utility model, by incorporating a blower, filter assembly, dispersion tube, and air inlet hood, allows air to be drawn from inside the cabinet and filtered through the blower. The air inlet hood and dispersion tube work together to blow the filtered air to the bottom of the cabinet to balance the air pressure, simultaneously forming a circulating airflow. This improves the efficiency and quality of air filtration inside the cabinet, reduces impurities, and enhances testing quality.

Description

Technical Field

[0001] This utility model relates to the field of liquid crystal panel testing technology, and in particular to a device for testing the bonding gap of liquid crystal panels. Background Technology

[0002] The LCD panel is the core component of an LCD display. It determines the brightness, contrast, color, and viewing angle of the display. The LCD panel is made by filling liquid crystal material between two parallel plates, changing the arrangement of liquid crystal molecules by voltage, and controlling the transmission of light by a polarization filter to achieve image display. The bonding gap of the LCD panel refers to the microscopic spatial distance formed between different functional layers or components through the bonding process during the manufacturing process of the LCD display device. As display technology develops towards higher resolution and thinner profiles, the control precision requirements for the bonding gap of the LCD panel are becoming increasingly stringent. Therefore, an LCD panel bonding gap detection device is needed to detect the bonding quality of the panel.

[0003] Existing LCD panel bonding gap detection devices can employ laser measurement devices. These devices mainly consist of a laser emitter, a laser receiver, a signal processing circuit, and a control unit. The laser emitter emits a laser beam into the LCD panel bonding gap. The laser beam is reflected and refracted on the gap surface. The laser receiver receives the reflected laser signal. The signal processing circuit amplifies, filters, and shapes the received signal. Based on information such as the laser propagation time and reflection angle, the bonding gap distance is calculated. The control unit coordinates the work of each component to achieve automated control of the detection process.

[0004] Existing LCD panel bonding gap detection devices typically require operators to open the detection cabinet and place the LCD panel onto the testing device's pedestal during use. Since air is easily mixed with dust and impurities, these dust and impurities can interfere with the laser propagation path when they enter the detection cabinet, thus affecting the detection quality. Utility Model Content

[0005] To overcome the problem that existing LCD panel bonding gap detection devices typically require operators to open the detection cabinet before placing the LCD panel onto the testing device's pedestal, and that dust and impurities easily mix with the air and can interfere with the laser propagation path when they enter the detection cabinet, thus affecting the detection quality.

[0006] The technical solution of this utility model is as follows: a liquid crystal panel bonding gap bonding detection device, including a cabinet, a blower fixed at the top of the cabinet, a filter assembly set at the top of the cabinet near the blower, the filter assembly including a box fixed at the top of the cabinet, a cover plate snapped onto the top of the box, an air inlet hood inserted into the top of the cabinet, a dispersion tube inserted into the side wall of the cabinet, a sealing door rotatably connected to the side wall of the cabinet away from the dispersion tube, a servo motor fixed at the bottom of the cabinet, a support platform fixed at the output end of the servo motor, a laser emitter fixed on the side wall of the cabinet, and a laser receiver fixed on the side wall of the cabinet near the laser emitter.

[0007] Furthermore, pipes are inserted at both ends of the housing, with the other end of the pipes connected to the input end of the blower and the top of the air intake hood, respectively. A pipe is inserted at the output end of the blower top and connected to the dispersion pipe to facilitate air circulation.

[0008] Furthermore, the bottom of the air intake hood is fixed to the top of the cabinet in a trumpet shape, and the dispersion tube is U-shaped and snapped into the bottom of the cabinet. Several air holes are opened on the inner side wall of the dispersion tube, which improves the stability of air circulation inside the cabinet.

[0009] Furthermore, an installation groove is provided in the middle of the housing, and a limiting frame is fixed at the bottom of the cover plate. Several slots are provided in the middle of the limiting frame for the filter element to be snapped in. The internal dimensions of the installation groove are adapted to the external dimensions of the limiting frame and the cover plate, which improves the convenience of filter element installation.

[0010] Furthermore, two handles are fixed to the top of the cover plate, and the two handles are symmetrically distributed.

[0011] Furthermore, a limiting frame is fixed on the inner side wall of the cabinet, and a sealing ring is fixed on the side wall of the sealed door. Both the limiting frame and the sealing ring are U-shaped, which improves the sealing performance of the sealed door.

[0012] Furthermore, a groove is provided in the middle of the support platform for the LCD panel to be snapped in, and two push plates are movably connected to the bottom of the groove, which improves the convenience of removing the LCD panel.

[0013] Furthermore, a display screen is embedded in the side wall of the cabinet near the sealed door, and the display screen is coupled to the laser emitter and laser receiver.

[0014] The beneficial effects of this utility model are: Compared to traditional LCD panel bonding gap detection devices, this device is equipped with a blower, filter assembly, dispersion tube, and air inlet hood. Activating the blower draws air from inside the cabinet for filtration. The air inlet hood and dispersion tube work together to blow the filtered air to the bottom of the cabinet to balance the air pressure and create a circulating airflow. This improves the efficiency and quality of air filtration inside the cabinet, reduces impurities, and enhances detection quality. Furthermore, the device includes an installation slot, limit bracket, card slot, and handle. Operators can pull out the limit bracket by lifting the handle, facilitating the removal and replacement of the filter element inside the card slot, thus improving the ease of cabinet maintenance. Attached Figure Description

[0015] Figure 1 The diagram shown illustrates the overall structure of the liquid crystal panel bonding gap detection device of this utility model. Figure 1 ; Figure 2 The diagram shown is a schematic representation of the overall structure of this utility model. Figure 2 ; Figure 3 The diagram shown is a schematic representation of the overall structure of this utility model. Figure 3 ; Figure 4 The diagram shown is a schematic representation of the structure of the filter assembly of this utility model. Figure 5 The diagram shown is a schematic representation of the support platform structure of this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1. Cabinet; 2. Blower; 3. Filter assembly; 301. Housing; 302. Cover plate; 303. Mounting groove; 304. Limiting frame; 305. Slot; 306. Handle; 4. Dispersion tube; 5. Air inlet hood; 6. Sealing door; 7. Servo motor; 8. Support platform; 9. Laser emitter; 10. Laser receiver; 11. Display screen; 12. Limiting frame; 13. Sealing ring; 14. Groove; 15. Push plate. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Please refer to Figures 1-5The LCD panel bonding gap detection device includes a cabinet 1. A blower 2 is fixed to the top of the cabinet 1. A filter assembly 3 is installed near the top of the cabinet 1, near the blower 2. The filter assembly 3 includes a housing 301 fixed to the top of the cabinet 1. The housing 301 is filled with a filter element to filter impurities and particles in the air. A filter element is a component used to filter impurities in fluids such as air and liquids. Its core function is to intercept particulate matter and contaminants through a filter layer of a specific material. The filter element is existing technology and will not be described in detail here. A cover plate 302 is snapped onto the top of the housing 301. The cover plate 302 is used to close the top of the cabinet 301. An air intake hood 5 is inserted into the top of the cabinet 1. The bottom end of the air intake hood 5 is funnel-shaped and fixed to the top of the cabinet 1. The air intake hood 5 is used to expand the air intake range. A dispersion pipe 4 is inserted into the side wall of the cabinet 1. The dispersion pipe 4 is U-shaped and snapped into the bottom of the cabinet 1. Several air holes are opened on the inner side wall of the dispersion pipe 4 for exhaust, so that the air inside the cabinet 1 circulates from the bottom to the top, improving the stability of the air circulation inside the cabinet 1. A sealing door 6 is rotatably connected to the side wall of the cabinet 1 away from the dispersion pipe 4. The bottom of the cabinet 1 is fixed. A servo motor 7 is provided, and a support platform 8 is fixed to the output end of the servo motor 7 via Li Qiannan. A laser emitter 9 is fixed to the side wall of the cabinet 1 by bolts. The laser emitter 9 emits a laser beam. A laser receiver 10 is fixed to the side wall of the cabinet 1 near the laser emitter 9. After the laser beam is reflected and refracted on the surface of the gap between the liquid crystal panels, the laser receiver 10 receives the reflected laser signal. The signal processing circuit amplifies, filters, and shapes the received signal. Based on the propagation time and reflection angle of the laser, the distance of the fitting gap is calculated. The cabinet 1 A display screen 11 is embedded in the side wall near the sealed door 6. The display screen 11 is coupled with the laser emitter 9 and the laser receiver 10 to display the detection data. By starting the blower 2, negative pressure can be generated to transport the air inside the cabinet 1 through the air inlet hood 5 into the cabinet 301 for filtration. The filtered air is then transported to the bottom of the cabinet 1 through the dispersion pipe 4. The dispersion pipe 4 and the air inlet hood 5 work together to realize air circulation, thereby improving the quality and efficiency of air filtration inside the cabinet 1, reducing dust in the air, reducing detection interference, and improving the accuracy of laser detection.

[0019] The housing 301 has an installation groove 303 in the middle. The bottom of the cover 302 is fixed with a limiting frame 304. The side wall of the cover 302 is wrapped with a rubber sealing ring. The limiting frame 304 is made of stainless steel mesh for support and limiting. The limiting frame 304 has several slots 305 in the middle for the filter element to be snapped in. The internal dimensions of the installation groove 303 are adapted to the external dimensions of the limiting frame 304 and the cover 302, which improves the convenience of filter element installation. The top of the cover 302 is fixed with two handles 306. The two handles 306 are symmetrically distributed to facilitate the operator to lift the cover 302 and pull out the limiting frame 304.

[0020] A limiting frame 12 is fixed on the inner side wall of the cabinet 1, and a sealing ring 13 is fixed on the side wall of the sealing door 6. Both the limiting frame 12 and the sealing ring 13 are U-shaped. The sealing ring 13 is snapped onto the side wall of the limiting frame 12, which improves the sealing performance of the sealing door 6.

[0021] The support platform 8 has a groove 14 in the middle for the LCD panel to be snapped in. Two push plates 15 are movably connected to the bottom of the groove 14. The push plates 15 are driven by electric push rods, which improves the convenience of removing the LCD panel.

[0022] When using the LCD panel bonding gap detection device, the operator first moves the device to the designated position, then connects the external power supply, and clips the bottom end of the LCD panel to be tested into the inside of the groove 14, so that the bonding gap of the LCD panel is exposed. Then, the sealing door 6 is closed, and a laser beam is emitted through the laser emitter 9. After the laser beam is reflected and refracted on the surface of the LCD panel gap, the laser receiver 10 receives the reflected laser signal. The signal processing circuit amplifies, filters, and shapes the received signal, calculates the bonding gap distance, and displays it on the display screen 11. When impurities enter the cabinet 1, the operator starts the blower 2, which generates negative pressure to transport the air inside the cabinet 1 through the air inlet hood 5 to the inside of the box 301 for filtration. The filtered air is then transported to the bottom of the cabinet 1 through the dispersion pipe 4. The dispersion pipe 4 and the air inlet hood 5 work together to achieve air circulation, thereby improving the quality and efficiency of air filtration inside the cabinet 1, reducing dust in the air, reducing detection interference, and improving the accuracy of laser detection.

[0023] Considering that the internal impurities of housing 301 may affect the filtration quality, operators can pull out the limiting bracket 304 by lifting the handle 306, which makes it easy to remove the filter element inside the slot 305 for replacement, thereby improving the convenience of maintenance of housing 301.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for detecting bonding gaps in liquid crystal panel bonding, characterized in that, The cabinet (1) includes a blower (2) fixed at the top of the cabinet (1), a filter assembly (3) set at the top of the cabinet (1) near the blower (2), the filter assembly (3) includes a box (301) fixed at the top of the cabinet (1), a cover plate (302) snapped onto the top of the box (301), an air inlet hood (5) inserted into the top of the cabinet (1), a dispersion tube (4) inserted into the side wall of the cabinet (1), a sealing door (6) rotatably connected to the side wall of the cabinet (1) away from the dispersion tube (4), a servo motor (7) fixed at the bottom of the cabinet (1), a support platform (8) fixed at the output end of the servo motor (7), a laser emitter (9) fixed on the side wall of the cabinet (1), and a laser receiver (10) fixed on the side wall of the cabinet (1) near the laser emitter (9).

2. The liquid crystal panel bonding gap detection device according to claim 1, characterized in that: Both ends of the housing (301) are connected to pipes, and the other end of the pipes is connected to the input end of the blower (2) and the top of the air intake hood (5) respectively. The output end of the blower (2) is connected to the distribution pipe (4).

3. The liquid crystal panel bonding gap detection device according to claim 1, characterized in that: The bottom of the air intake hood (5) is fixed in a trumpet shape at the top of the cabinet (1), and the dispersion tube (4) is U-shaped and snapped into the bottom of the cabinet (1). Several air holes are opened on the inner side wall of the dispersion tube (4).

4. The liquid crystal panel bonding gap detection device according to claim 1, characterized in that: The housing (301) has an installation groove (303) in the middle, and a limiting frame (304) is fixed at the bottom of the cover plate (302). The limiting frame (304) has several slots (305) in the middle for the filter element to be snapped in. The internal dimensions of the installation groove (303) are compatible with the external dimensions of the limiting frame (304) and the cover plate (302).

5. The liquid crystal panel bonding gap detection device according to claim 1, characterized in that: Two handles (306) are fixed at the top of the cover plate (302), and the two handles (306) are symmetrically distributed.

6. The liquid crystal panel bonding gap detection device according to claim 1, characterized in that: A limiting frame (12) is fixed on the inner side wall of the cabinet (1), and a sealing ring (13) is fixed on the side wall of the sealing door (6). Both the limiting frame (12) and the sealing ring (13) are in the shape of a U-shape.

7. The liquid crystal panel bonding gap detection device according to claim 1, characterized in that: The support platform (8) has a groove (14) in the middle for the LCD panel to be snapped in, and two push plates (15) are movably connected to the bottom of the groove (14).

8. The liquid crystal panel bonding gap detection device according to claim 1, characterized in that: A display screen (11) is embedded in the side wall of the cabinet (1) near the sealed door (6), and the display screen (11) is coupled to the laser emitter (9) and the laser receiver (10).

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