Liquid crystal panel arc edge detection device

Abstract

The utility model provides a liquid crystal panel arc edge detection device which comprises a detection support, a conveying linear module is arranged below the detection support, a panel carrying table is arranged on the conveying linear module, and the conveying linear module can drive the panel carrying table to penetrate through the detection support. A mounting position support is arranged on the detection support, and a low-angle camera unit and a high-angle camera unit are arranged on the mounting position support; when the panel carrying table is located under the detection support, the lens of the low-angle camera unit and the lens of the high-angle camera unit face the panel carrying table. According to the utility model, the mounting positions with different angles are provided through the mounting position bracket, so that the multi-angle detection of the arc edge of the liquid crystal panel is realized; one detection support can adapt to installation of one or more installation position supports, the structure is compact, and the device complexity and cost are low; and the detection efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of AOI (Automated Optical Inspection), specifically to a device for detecting the curved edge of a liquid crystal panel. Background Technology

[0002] With the continuous development of the smartphone market, breaking product homogenization has become a goal pursued by major manufacturers. Against this backdrop, 2.5D curved screen phones have gradually emerged as a new hot topic in the smartphone field. Compared to traditional screens, curved screens have many significant advantages, such as: better flexibility, less susceptibility to damage, more personalized design, easier operation for large-screen phones, and better conformity to the curvature of the human retina, thus improving the sensory experience.

[0003] With the widespread adoption of curved-screen smartphones, the problem of detecting defects at the curved edges of their LCD panels has become increasingly prominent, posing a common technical challenge in the industry. Traditionally, inspection relies primarily on manual labor, a time-consuming, labor-intensive, and inefficient process. Furthermore, the results are highly subjective, easily influenced by factors such as human emotions, eyesight, ambient lighting, and inconsistent judgment standards among individuals, making it difficult to guarantee accuracy and reliability.

[0004] In the field of LCD panel inspection, AOI technology plays a crucial role in improving inspection efficiency and accuracy. However, the curved edge design of LCD panels requires multi-angle inspection to ensure full coverage. Traditional 2D AOI technology can only acquire images from a single angle, making it difficult to fully inspect the curved edge areas of LCD panels. Although this problem can be solved by increasing the number of AOI inspection devices and their installation angles, this also leads to higher equipment costs and more complex pipeline designs, resulting in longer inspection times and lower efficiency. Utility Model Content

[0005] The technical problem to be solved by this utility model is: how to realize multi-angle detection of the curved edge of the LCD panel and improve the detection efficiency.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] This utility model provides a device for detecting the curved edge of a liquid crystal panel, including a detection bracket. A conveying linear module is provided below the detection bracket, and a panel platform is provided on the conveying linear module. The conveying linear module can drive the panel platform to pass through the detection bracket. A mounting bracket is provided on the detection bracket, and a low-angle camera unit and a high-angle camera unit are provided on the mounting bracket. When the panel platform is located directly below the detection bracket, the lenses of the low-angle camera unit and the high-angle camera unit are both facing the panel platform.

[0008] The beneficial effects of this utility model are:

[0009] This invention enables multi-angle detection of the curved edges of LCD panels by providing mounting positions at different angles through mounting brackets. One detection bracket can accommodate the installation of one or more mounting brackets, resulting in a compact structure and low complexity and cost. The LCD panel is supported by a panel stage, and when the panel stage moves under the detection bracket, the low-angle camera unit and the high-angle camera unit can simultaneously acquire images of the curved edges of the LCD panel at both high and low angles, reducing the number of image acquisitions required for all curved edges of the LCD panel and improving detection efficiency.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, there are at least two mounting brackets, which are located on opposite sides of the running direction of the conveying linear module; one mounting bracket has a low-angle camera unit on one side, and the other mounting bracket has a high-angle camera unit on the same side.

[0012] It facilitates the simultaneous detection of a low-angle image on side A of the LCD panel and a high-angle image on the opposite side B; the two camera units are located on the same side of the two mounting brackets, resulting in minimal difference in detection position and high detection consistency and accuracy.

[0013] Furthermore, there are two mounting brackets, one of which is connected to one side of the detection bracket, and the other is connected to the other side of the detection bracket.

[0014] The two mounting brackets are staggered to avoid structural interference and facilitate installation; at the same time, the force on both sides of the bracket is symmetrical, resulting in good stability.

[0015] Furthermore, the detection bracket is equipped with a horizontal linear module, the running direction of which is perpendicular to the running direction of the conveying linear module, and the moving end of the horizontal linear module is connected to the mounting bracket.

[0016] The horizontal linear module can drive the mounting bracket to move. During testing, the mounting bracket is close to the panel stage, which makes it easier for the camera unit to be aligned with the curved edge of the LCD panel, thus improving testing accuracy. After testing, the mounting bracket leaves the operating area of ​​the panel stage, which helps to avoid structural interference.

[0017] Furthermore, a low-angle camera unit is provided on one side of the mounting bracket, and a high-angle camera unit is provided on the other side.

[0018] It facilitates simultaneous detection of the height and low angle images of the same arc edge of the LCD panel; combined with the design of two mounting brackets, it can detect the height and low angle images of two arc edges at one time. Only two detections or two devices are needed to complete the detection of four arc edges, which improves detection efficiency and saves equipment costs.

[0019] Furthermore, the mounting bracket is also provided with a backlight bracket, the lower end of which is lower than the panel platform and extends toward the conveying linear module, and the backlight bracket is provided with a background light source.

[0020] This facilitates the provision of background light for the camera unit, improving detection accuracy.

[0021] Furthermore, the lower end of the backlight bracket is provided with an extension strip, which is arranged perpendicular to the backlight bracket. Two background light sources are provided on the extension strip, one of which is located below the low-angle camera unit and the other is located below the high-angle camera unit.

[0022] This allows for separate background light sources to be arranged for the low-angle and high-angle camera units, improving detection accuracy.

[0023] Furthermore, the mounting bracket is provided with multiple mounting holes, which are distributed along an arc shape; the low-angle camera unit and the high-angle camera unit are respectively provided with arc-shaped mounting slots, the curvature of which is the same as the curvature of the mounting hole distribution outline; by fasteners passing through the mounting slots and mounting holes, the low-angle camera unit or the high-angle camera unit is fixed to the mounting bracket.

[0024] By using the mounting slots and mounting holes, the mounting angle of the camera unit can be continuously adjusted, making it easy to adapt to the testing needs of various LCD panels and providing good adaptability.

[0025] Furthermore, the mounting bracket is also provided with an arc-shaped sliding groove, the center of which coincides with the center of the distribution contour of the mounting holes, and both the low-angle camera unit and the high-angle camera unit are slidably connected to the arc-shaped sliding groove.

[0026] This improves the stability of the camera unit; at the same time, it prevents the camera unit from falling and being damaged when adjusting the angle, thus improving safety.

[0027] Furthermore, both the low-angle camera unit and the high-angle camera unit include a camera mounting bracket. The camera mounting bracket is equipped with a planar adjustment linear module and a point light bracket. The planar adjustment linear module is equipped with an AOI camera. The point light bracket is located on both sides of the AOI camera and is equipped with a point light source. The camera mounting bracket is attached to the mounting position bracket, and the mounting through slot is located on the camera mounting bracket.

[0028] By adjusting the linear module on the plane, the installation position of the AOI camera can be adjusted to ensure that the camera can be aligned with the curved edge of the LCD panel. The distance is adjustable, which provides good flexibility and improves the detection accuracy. Attached Figure Description

[0029] Figure 1This is a schematic diagram of the structure of this utility model.

[0030] Figure 2 This is a view of the present invention perpendicular to the running direction of the linear conveying module.

[0031] Figure 3 This is a view of the present invention along the running direction of the linear conveying module.

[0032] Figure 4 This is a schematic diagram of the high and low angle camera units.

[0033] In the accompanying drawings, the technical features represented by each reference numeral are as follows:

[0034] 1-Detection bracket; 2-Conveyor linear module; 3-Panel stage; 4-Mounting bracket; 5-Low-angle camera unit; 6-High-angle camera unit; 7-Horizontal linear module; 8-Backlight bracket; 9-Backlight source; 10-Extension strip; 11-Mounting hole; 12-Mounting through slot; 13-Arc-shaped slide; 14-Camera mounting bracket; 15-Planar adjustment linear module; 16-AOI camera; 17-Point light bracket; 18-Point light source. Detailed Implementation

[0035] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0036] This utility model refers to Figure 1-4 .

[0037] This utility model provides a device for detecting the arc edge of a liquid crystal panel, including a detection bracket 1. A conveying linear module 2 is provided below the detection bracket 1, and a panel platform 3 is provided on the conveying linear module 2. The conveying linear module 2 can drive the panel platform 3 to pass through the detection bracket 1. A mounting bracket 4 is provided on the detection bracket 1, and a low-angle camera unit 5 and a high-angle camera unit 6 are provided on the mounting bracket 4. When the panel platform 3 is located directly below the detection bracket 1, the lenses of the low-angle camera unit 5 and the high-angle camera unit 6 are both facing the panel platform 3.

[0038] principle:

[0039] The LCD panel arc edge detection device is used to acquire images of the arc edge of the LCD panel; the subsequent defect identification process can be completed by computer software, which is unrelated to the technical problem of this utility model. The low-angle camera unit 5 and the high-angle camera unit 6 are opposite each other and are named according to their different installation angles; when the concept is unrelated to the installation angle, they are collectively referred to as camera units. The linear module is existing technology; the conveying linear module 2 can be a linear motor.

[0040] During operation, the LCD panel is placed on the panel stage 3, and the linear conveyor module 2 drives the panel stage 3 to move linearly. When the panel stage 3 moves directly below the detection bracket 1, the low-angle camera unit 5 and the high-angle camera unit 6 can simultaneously or sequentially acquire images of the LCD panel at high and low angles, thereby realizing multi-angle detection of the arc edge of the LCD panel.

[0041] The low-angle camera unit 5 and the high-angle camera unit 6 can be arranged in, but are not limited to, the following ways: 1. The low-angle camera unit 5 and the high-angle camera unit 6 are located on both sides of the running direction of the conveying linear module 2 and are fixed on two mounting brackets 4. When the low-angle camera unit 5 acquires a low-angle image of side A of the LCD panel, the high-angle camera unit 6 simultaneously acquires a high-angle image of side B of the LCD panel, with side A and side B opposite each other. 2. The low-angle camera unit 5 and the high-angle camera unit 6 are arranged along the running direction of the conveying linear module 2 and are fixed on both sides of the same mounting bracket 4. When the low-angle camera unit 5 acquires a low-angle image of side A of the LCD panel, the high-angle camera unit 6 simultaneously or subsequently acquires a high-angle image of side A of the LCD panel. When only one low-angle camera unit 5 and one high-angle camera unit 6 are set, the high and low angle images of the four sides of the LCD panel can be acquired in 4 detections or 1 detection with 4 devices, eliminating the need for 8 detections and improving detection efficiency.

[0042] By employing this utility model, mounting positions at different angles are provided by the mounting bracket 4, enabling multi-angle detection of the curved edges of the LCD panel. One detection bracket 1 can accommodate the installation of one or more mounting brackets 4, resulting in a compact structure and low complexity and cost. The LCD panel is supported by the panel stage 3, and when the panel stage 3 moves to below the detection bracket 1, the low-angle camera unit 5 and the high-angle camera unit 6 can simultaneously acquire images of the high and low angles of the curved edges of the LCD panel, reducing the number of image acquisitions required for all curved edges of the LCD panel and improving detection efficiency.

[0043] Furthermore, there are at least two mounting brackets 4, which are located on opposite sides of the running direction of the conveying linear module 2; a low-angle camera unit 5 is provided on one side of one mounting bracket 4, and a high-angle camera unit 6 is provided on the same side of the other mounting bracket 4.

[0044] It facilitates the simultaneous detection of a low-angle image on side A of the LCD panel and a high-angle image on the opposite side B; the two camera units are located on the same side of the two mounting brackets 4, with small differences in detection position, resulting in high detection consistency and accuracy.

[0045] Furthermore, there are two mounting brackets 4, one of which is connected to one side of the detection bracket 1, and the other mounting bracket 4 is connected to the other side of the detection bracket 1.

[0046] The two mounting brackets 4 are staggered to avoid structural interference and facilitate installation; at the same time, the forces on both sides of the testing bracket 1 are symmetrical, resulting in good stability.

[0047] Furthermore, the detection bracket 1 is provided with a horizontal linear module 7, the running direction of the horizontal linear module 7 is perpendicular to the running direction of the conveying linear module 2, and the moving end of the horizontal linear module 7 is connected to the mounting bracket 4.

[0048] Preferably, the detection bracket 1 is a gantry frame, the horizontal linear module 7 is located on the top beam of the gantry frame, and the conveying linear module 2 is located between the two columns of the gantry frame. The horizontal linear module 7 can be a linear motor, a lead screw pair, etc.

[0049] The horizontal linear module 7 can drive the mounting bracket 4 to move. During testing, the mounting bracket 4 is close to the panel stage 3, which makes it easier for the camera unit to be aligned with the curved edge of the LCD panel and improves the testing accuracy. After testing, the mounting bracket 4 leaves the operating area of ​​the panel stage 3 to avoid structural interference.

[0050] Furthermore, a low-angle camera unit 5 is provided on one side of the mounting bracket 4, and a high-angle camera unit 6 is provided on the other side.

[0051] It facilitates the simultaneous detection of the height and low angle images of the same arc edge of the LCD panel; combined with the design of two mounting brackets 4, the height and low angle images of two arc edges can be detected at one time. Only two detections or two devices are needed to complete the detection of four arc edges, which improves detection efficiency and saves equipment costs.

[0052] Furthermore, the mounting bracket 4 is also provided with a backlight bracket 8, the lower end of which is lower than the panel platform 3 and extends toward the conveying linear module 2, and the backlight bracket 8 is provided with a background light source 9.

[0053] This facilitates the provision of background light for the camera unit, improving detection accuracy.

[0054] Furthermore, the lower end of the backlight bracket 8 is provided with an extension strip 10, which is arranged perpendicular to the backlight bracket 8. Two background light sources 9 are provided on the extension strip 10, one of which is located below the low-angle camera unit 5 and the other is located below the high-angle camera unit 6.

[0055] This facilitates the arrangement of background light sources 9 for the low-angle camera unit 5 and the high-angle camera unit 6 respectively, thereby improving detection accuracy.

[0056] Furthermore, the mounting bracket 4 is provided with a plurality of mounting holes 11, which are distributed along an arc shape; the low-angle camera unit 5 and the high-angle camera unit 6 are respectively provided with arc-shaped mounting slots 12, the curvature of which is the same as the curvature of the distribution contour of the mounting holes 11; by fasteners passing through the mounting slots 12 and the mounting holes 11, the low-angle camera unit 5 or the high-angle camera unit 6 is fixed to the mounting bracket 4.

[0057] Note: The center of the distribution outline of the mounting holes 11 and the center of the mounting groove 12 can be located near the panel platform 3, that is, the panel platform 3 is located on the inner arc side of the mounting groove 12. Preferably, the fastener is a bolt.

[0058] By using the mounting slot 12 and mounting hole 11, the mounting angle of the camera unit can be continuously adjusted, which is convenient to adapt to the testing needs of various LCD panels and has good adaptability.

[0059] Furthermore, the mounting bracket 4 is also provided with an arc-shaped sliding groove 13, the center of which coincides with the center of the distribution contour of the mounting hole 11, and both the low-angle camera unit 5 and the high-angle camera unit 6 are slidably connected to the arc-shaped sliding groove 13.

[0060] Preferably, the arc-shaped groove 13 is located on the inner arc side of the distribution contour of the mounting hole 11. When fixing the camera unit, the fastener has a large span and good stability.

[0061] Preferably, the mounting bracket 4 is also provided with an angle scale, which is located on the outer arc side of the distribution contour of the mounting holes 11. The angle scale can be used to measure the angle between the camera unit and the horizontal plane. This facilitates the identification of the mounting angle of the camera unit and improves the accuracy of the mounting angle.

[0062] This improves the stability of the camera unit; at the same time, it prevents the camera unit from falling and being damaged when adjusting the angle, thus improving safety.

[0063] Furthermore, both the low-angle camera unit 5 and the high-angle camera unit 6 include a camera mounting bracket 14. The camera mounting bracket 14 is provided with a plane adjustment linear module 15 and a point light bracket 17. The plane adjustment linear module 15 is provided with an AOI camera 16. The point light bracket 17 is located on both sides of the AOI camera 16 and is provided with a point light source 18. The camera mounting bracket 14 is attached to the mounting bracket 4, and the mounting through groove 12 is located on the camera mounting bracket 14.

[0064] Preferably, the point light support 17 is a slide rail slider structure. This facilitates adjustment of the distance between the point light source 18 and the AOI camera 16, ensuring that the point light source 18 accurately illuminates the focal point of the AOI camera 16, thus improving detection accuracy. The planar adjustment linear module 15 is a superposition of two linear modules. Preferably, the planar adjustment linear module 15 includes two lead screw pairs. The fixed end of one lead screw pair is connected to the camera mounting bracket 14, and the moving end is connected to the fixed end of the other lead screw pair. The moving end of the other lead screw pair is connected to the AOI camera 16. One lead screw pair is arranged along the detection direction of the AOI camera 16, and the other lead screw pair is arranged perpendicular to the detection direction of the AOI camera 16. This avoids the adjustment of the planar adjustment linear module 15 affecting the detection direction of the AOI camera 16, ensuring the stability of the AOI camera 16's mounting direction.

[0065] The mounting position of the AOI camera 16 can be adjusted by adjusting the linear module 15 on the plane, ensuring that the camera can be aligned with the curved edge of the LCD panel. The distance is adjustable, which provides good flexibility and improves the detection accuracy.

[0066] In the description of this utility model, it should be understood that if descriptive terms indicating orientation, direction, or positional relationship appear, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc., the orientation or positional relationship indicated in this specification is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of understanding this utility model and simplifying the description, and does not indicate or imply that the part, element, or whole referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0067] Furthermore, if sequential descriptive terms such as "first," "second," etc., appear, their purpose in this specification is for ease of understanding or simplification. For example, to distinguish multiple technical features of the same type or function, which must be mentioned separately, this specification may use prefixes or suffixes to differentiate them. Therefore, they should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first," "second," etc., may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0068] In this utility model, if descriptive terms describing structural relationships are used, such as "installation," "connection," "joining," and "fixing," they should be interpreted broadly unless otherwise explicitly specified and limited. For example, "installation," "connection," and "joining" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. "Fixing" can refer to an integral fixation or a detachable fixation using fasteners; it can be a direct fixation or a fixation through an intermediate medium. For those skilled in the art, the specific meaning of the above descriptive terms in this utility model can be understood based on the specific circumstances, the context, and the coherence of the preceding and following text.

[0069] In this utility model, if descriptive terms containing subordinate or connecting meanings appear, such as "above" or "below" the second feature, they should not be interpreted restrictively unless otherwise explicitly specified and limited. For example, "above" or "below" can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. For those skilled in the art, the specific meaning of the above descriptive terms in this utility model can be understood according to the specific circumstances, the context, and the coherence of the preceding and following text.

[0070] Furthermore, "above," "on top of," and "above" the first feature in relation to the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0071] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments, examples, and features described in this specification, and such combinations or integrations should all fall within the scope of the present invention.

[0072] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Variations, modifications, substitutions, and modifications made by those skilled in the art to the above embodiments within the scope of information available through public channels and in conjunction with the technical teachings given in this application are still covered within the protection scope of this application.

Claims

1. A device for detecting the arc edge of a liquid crystal panel, characterized in that: The device includes a detection bracket (1), a conveying linear module (2) is provided below the detection bracket (1), a panel platform (3) is provided on the conveying linear module (2), and the conveying linear module (2) can drive the panel platform (3) to pass through the detection bracket (1); the detection bracket (1) is provided with a mounting bracket (4), and a low-angle camera unit (5) and a high-angle camera unit (6) are provided on the mounting bracket (4); when the panel platform (3) is located directly below the detection bracket (1), the lens of the low-angle camera unit (5) and the lens of the high-angle camera unit (6) are both facing the panel platform (3).

2. The liquid crystal panel arc edge detection device according to claim 1, characterized in that: There are at least two mounting brackets (4), which are located on opposite sides of the running direction of the linear conveyor module (2); a low-angle camera unit (5) is provided on one side of one mounting bracket (4), and a high-angle camera unit (6) is provided on the same side of the other mounting bracket (4).

3. The liquid crystal panel arc edge detection device according to claim 2, characterized in that: There are two mounting brackets (4), one of which is connected to one side of the detection bracket (1), and the other mounting bracket (4) is connected to the other side of the detection bracket (1).

4. The liquid crystal panel arc edge detection device according to claim 3, characterized in that: The detection bracket (1) is provided with a horizontal linear module (7), the running direction of the horizontal linear module (7) is perpendicular to the running direction of the conveying linear module (2), and the moving end of the horizontal linear module (7) is connected to the mounting bracket (4).

5. The liquid crystal panel arc edge detection device according to any one of claims 1-4, characterized in that: The mounting bracket (4) has a low-angle camera unit (5) on one side and a high-angle camera unit (6) on the other side.

6. The liquid crystal panel arc edge detection device according to claim 5, characterized in that: The mounting bracket (4) is also provided with a backlight bracket (8). The lower end of the backlight bracket (8) is lower than the panel platform (3) and extends to the conveying linear module (2). The backlight bracket (8) is provided with a background light source (9).

7. The liquid crystal panel arc edge detection device according to claim 6, characterized in that: The lower end of the backlight bracket (8) is also provided with an extension strip (10). The extension strip (10) is arranged perpendicular to the backlight bracket (8). Two background light sources (9) are provided on the extension strip (10). One background light source (9) is located below the low-angle camera unit (5), and the other background light source (9) is located below the high-angle camera unit (6).

8. The liquid crystal panel arc edge detection device according to claim 1, characterized in that: The mounting bracket (4) is provided with multiple mounting holes (11), which are distributed along an arc shape. The low-angle camera unit (5) and the high-angle camera unit (6) are respectively provided with arc-shaped mounting slots (12), and the curvature of the mounting slots (12) is the same as the curvature of the distribution outline of the mounting holes (11). The low-angle camera unit (5) or the high-angle camera unit (6) is fixed to the mounting bracket (4) by fasteners passing through the mounting slots (12) and the mounting holes (11).

9. The liquid crystal panel arc edge detection device according to claim 8, characterized in that: The mounting bracket (4) is also provided with an arc-shaped sliding groove (13), the center of which coincides with the center of the distribution contour of the mounting hole (11), and both the low-angle camera unit (5) and the high-angle camera unit (6) are slidably connected to the arc-shaped sliding groove (13).

10. The liquid crystal panel arc edge detection device according to claim 9, characterized in that: Both the low-angle camera unit (5) and the high-angle camera unit (6) include a camera mounting bracket (14). The camera mounting bracket (14) is provided with a plane adjustment linear module (15) and a point light bracket (17). The plane adjustment linear module (15) is provided with an AOI camera (16). The point light bracket (17) is located on both sides of the AOI camera (16). The point light bracket (17) is provided with a point light source (18). The camera mounting bracket (14) is attached to the mounting bracket (4). The mounting through slot (12) is located on the camera mounting bracket (14).

Images