Backlight module detection device

Abstract

The application relates to the technical field of detection, and discloses a backlight module detection device, which comprises a base, a fixing table arranged in the middle of the upper surface of the base, a universal ball arranged on the fixing table, a clamping assembly connected to the upper end of the universal ball through a supporting rod, a backlight module arranged on the clamping assembly, and a cylinder fixed to the edge of the upper surface of the base and rotationally matched with the clamping assembly. The cylinder, the universal ball, a first supporting plate, a clamping block, a second supporting plate and an elastic structure are arranged, so that the position of the clamping block can be quickly adjusted, different sizes of backlight modules can be fixed, the backlight module can be well inclined during detection, different photographing detection effects can be adjusted, the position of a camera module can be well adjusted, different photographing areas and focusing effects can be formed.

Description

Technical Field

[0001] This invention relates to the field of testing technology, and specifically to a backlight module testing device. Background Technology

[0002] The backlight module is a key component of the liquid crystal display (LCD), responsible for providing a uniform backlight. Backlight modules need to be inspected to remove defective products such as those with no backlight, uneven brightness, flickering, or yellowing, so that they can be repaired or scrapped later.

[0003] Existing methods for detecting backlight module malfunctions primarily rely on visual observation or camera image recognition. During image recognition, the camera typically takes a picture of the backlight module from the front. Since the glass surface of the backlight module reflects ambient light, these reflections can "submerge" tiny defects. Furthermore, when the backlight illuminates the entire screen evenly, even faint defects can be obscured by the light from surrounding normal pixels, affecting the accuracy of image recognition detection. To address this, we propose a backlight module detection device. Summary of the Invention

[0004] The purpose of this invention is to provide a backlight module testing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a backlight module testing device, comprising:

[0006] A base, wherein a fixed platform is provided in the middle of the upper surface of the base;

[0007] A omnidirectional ball is mounted on the fixed platform, and a clamping assembly is connected to the upper end of the omnidirectional ball via a support rod. A backlight module is mounted on the clamping assembly.

[0008] A cylinder is fixed to the edge of the upper surface of the base, and the cylinder is rotatably engaged with the clamping assembly;

[0009] The clamping assembly includes a first support plate, a clamping block, a second support plate, and an elastic structure. The second support plate is provided on both sides adjacent to the first support plate, and an elastic structure that cooperates with the first support plate is provided on one side of the second support plate. The clamping block that limits the backlight module is provided on the upper surface edge of the first support plate and the second support plate.

[0010] The elastic structure includes an adjusting screw, an adjusting slider, a spring, and a guide slider. A connecting groove is provided on the inner side of the first support plate. The adjusting slider and the guide slider are arranged side by side on the inner side of the connecting groove, and a spring connects the adjusting slider and the guide slider. The adjusting screw is rotatably installed in the middle of the inner side of the connecting groove, and the adjusting screw and the adjusting slider are engaged by a threaded part.

[0011] Preferably, the guide sliding block is provided with a guide hole at one end for cooperating with the adjusting screw rod.

[0012] Preferably, the guide sliding block is provided with a guide hole at one end for cooperating with the adjusting screw rod.

[0013] Preferably, the guide sliding block is provided with a guide hole at one end for cooperating with the adjusting screw rod.

[0014] Preferably, the base is provided with a position adjusting assembly at one end face, and the position adjusting assembly is provided with a camera module for taking pictures of the backlight module at one end.

[0015] Preferably, the position adjusting assembly comprises a first guide rail, a first screw rod, a first motor, a fixed block and a first telescopic block, the first guide rail is fixed to the one end face of the base, the first screw rod is rotatably installed in the inner side of the first guide rail, and the outer surface of the first screw rod is sleeved with a first sliding block in threaded cooperation, the fixed block is fixed to the first sliding block, the first telescopic block is sleeved on the fixed block, and the first telescopic block is provided with an adjusting bolt in contact with the fixed block on one side wall, and the first guide rail is provided with a first motor in cooperation with the first screw rod at one end.

[0016] Preferably, the position adjusting assembly further comprises a second telescopic block, a second motor and a second screw rod, the second telescopic block is slidably installed in the inner side of one end of the first telescopic block, and the second telescopic block is connected with the second screw rod through a threaded portion in the inner side, the second screw rod is rotatably matched with the first telescopic block through a connecting hole, the second motor is fixed to the side wall of the first telescopic block, and the output end of the second motor is fixedly connected with the second screw rod.

[0017] Preferably, the first telescopic block is "L" shaped, and the lower surface of the first telescopic block is provided with an inclined support.

[0018] Preferably, the cylinder is provided with four.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] (1) By setting the cylinder, universal ball, first supporting plate, clamping block, second supporting plate and elastic structure, the traditional backlight module is only front shot, the surface glass of the backlight module is affected by the reflected ambient light, which causes inconvenience to observe the small bad points of the backlight module, the device can quickly adjust the position of the clamping block to fix backlight modules of different sizes, and when detecting, the backlight module can be well tilted to adjust different shooting angles to change the angle of the reflected light of the backlight module to the outside, so that the light of the backlight module is separated from the ambient light, and the bad points of the backlight module are better exposed, and the bad points of the backlight module are easy to detect and observe.

[0021] (2) By setting first guide rail, first screw rod, first motor, fixed block, first telescopic block and second telescopic block, avoid the traditional camera module position is fixed, inconvenient to different area of backlight module is photographed and identified, the device can be well according to the different length of backlight module, the position of the camera module is adjusted quickly, thereby forming different photographing area and focusing effect, improve the identification effect of different specifications of backlight module, increase the scope of application of the device.

[0022] (3) By setting adjusting screw rod, adjusting sliding block, spring and guide sliding block, avoid the traditional spring end fixed, when clamping the backlight module of larger size, the stretching spring amount is large, the clamping force is too large to cause the surface of the backlight module to be pressed or clamped damage, the device can adjust the fixed position of one end of the spring according to the size of the backlight module of different specifications, thereby when clamping, the spring is kept in proper elongation, the elastic clamping force is kept stable, so as to reduce the clamping damage caused by excessive clamping force, improve the safety during detection, and the clamping operation is beneficial to keep the proper displacement of the clamping block, and the clamping operation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The structure of the present application is shown in the figure;

[0024] Figure 2 The position adjusting assembly installation structure of the present application is shown in the figure;

[0025] Figure 3 The clamping assembly structure of the present application is shown in the figure;

[0026] Figure 4 The elastic structure of the present application is shown in the figure;

[0027] Figure 5 The guide sliding block structure of the present application is shown in the figure;

[0028] Figure 6 The first telescopic block installation structure of the present application is shown in the figure;

[0029] Figure 7 The second telescopic block and the first telescopic block connection structure of the present application is shown in the figure;

[0030] Figure 8 The first telescopic block section structure of the present application is shown in the figure.

[0031] As shown in the figure: 1, base; 2, fixed table; 3, clamping assembly; 301, first supporting plate; 302, clamping block; 303, second supporting plate; 305, elastic structure; 3051, adjusting screw; 3052, adjusting sliding block; 3053, spring; 3054, guide sliding block; 3055, guide hole; 4, backlight module; 5, air cylinder; 501, ball head; 6, universal ball; 7, position adjusting assembly; 701, first guide rail; 702, first screw; 703, first motor; 704, fixed block; 705, first telescopic block; 706, second telescopic block; 707, inclined support; 708, second motor; 709, second screw; 8, camera module. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] Please refer to Figures 1-8 The present application provides a technical solution: a backlight module detection device, comprising:

[0034] The base 1 is provided with a fixed table 2 in the middle of the upper surface of the base 1;

[0035] The universal ball 6 is arranged on the fixed table 2, and the upper end of the universal ball 6 is connected with the clamping assembly 3 through a supporting rod, and the clamping assembly 3 is provided with a backlight module 4;

[0036] The air cylinder 5 is fixed on the edge of the upper surface of the base 1, and the air cylinder 5 is in rotational cooperation with the clamping assembly 3;

[0037] It is convenient to adjust the clamping assembly 3 in any direction angle, so that the backlight module 4 on it is inclined to adjust the angle, thereby reducing the external strong light interference and affecting the photographing identification of the backlight module 4;

[0038] The clamping assembly 3 comprises a first supporting plate 301, a clamping block 302, a second supporting plate 303 and an elastic structure 305, the two adjacent side edges of the first supporting plate 301 are provided with the second supporting plate 303, one side of the second supporting plate 303 is provided with the elastic structure 305 matched with the first supporting plate 301, and the upper surface edges of the first supporting plate 301 and the second supporting plate 303 are provided with the clamping block 302 limiting the backlight module 4;

[0039] It is convenient to quickly fix the backlight module 4 of different sizes to avoid random movement when adjusting the angle of the backlight module 4, thereby affecting the subsequent photographing identification effect; It is convenient to quickly fix the backlight module 4 of different sizes to avoid random movement when adjusting the angle of the backlight module 4, thereby affecting the subsequent photographing identification effect;

[0040] The elastic structure 305 comprises an adjusting screw 3051, an adjusting sliding block 3052, a spring 3053 and a guide sliding block 3054, a connecting sliding groove is formed in the inner side of the first supporting plate 301, the adjusting sliding block 3052 and the guide sliding block 3054 are arranged side by side in the inner side of the connecting sliding groove, the spring 3053 is connected between the adjusting sliding block 3052 and the guide sliding block 3054, the adjusting screw 3051 is rotationally installed in the middle part of the inner side of the connecting sliding groove, and the adjusting screw 3051 and the adjusting sliding block 3052 are matched through the thread part;

[0041] The position of one end of the spring 3053 can be adjusted by adjusting the position of the adjusting sliding block 3052, so that the spring 3053 is not stretched to a large extent when the backlight module 4 is clamped and fixed by the elastic force of the spring 3053, and the backlight module 4 is not damaged by a large clamping force.

[0042] Preferably, the guide sliding block 3054 is provided with a guide hole 3055 at one end, which is matched with the adjusting screw 3051, so as to better avoid the skew of the adjusting screw 3051.

[0043] Preferably, the guide sliding block 3054 is in the shape of a "convex" cross section;

[0044] The guide sliding block 3054 can better slide horizontally and avoid skewing.

[0045] Preferably, the cylinder 5 is fixed with a ball head 501 at the top end, and the lower surface of the clamping assembly 3 is provided with a ball groove matched with the ball head 501 at the four corners;

[0046] The clamping assembly 3 can be better lifted by the cylinder 5 to make the clamping assembly 3 skew to adjust the inclination angle of the clamped backlight module 4.

[0047] Preferably, the base 1 is provided with a position adjusting assembly 7 at one end, and the position adjusting assembly 7 is provided with a camera module 8 for taking pictures of the backlight module 4 at one end;

[0048] The camera module 8 can be better positioned at the center of the backlight module 4 of different sizes to take pictures of the backlight module 4 more comprehensively.

[0049] Preferably, the position adjusting assembly 7 comprises a first guide rail 701, a first screw rod 702, a first motor 703, a fixed block 704 and a first telescopic block 705, the first guide rail 701 is fixed to one end face of the base 1, the first guide rail 701 is rotatably installed with the first screw rod 702 on the inner side, and the outer surface of the first screw rod 702 is sleeved with the first sliding block matched with the threads, the fixed block 704 is fixed to the first sliding block, the first telescopic block 705 is sleeved on the fixed block 704, and the side wall of the first telescopic block 705 is provided with the adjusting bolt in contact with the fixed block 704, and one end of the first guide rail 701 is provided with the first motor 703 matched with the first screw rod 702.

[0050] The position of the camera module 8 is adjusted in the first direction and the height direction.

[0051] Preferably, the position adjusting assembly 7 further comprises a second telescopic block 706, a second motor 708 and a second screw rod 709, the second telescopic block 706 is slidably installed on the inner side of one end of the first telescopic block 705, the second telescopic block 706 is connected with the second screw rod 709 through the threads on the inner side, the second screw rod 709 is rotatably matched with the first telescopic block 705 through the connecting hole, the second motor 708 is fixed to the side wall of the first telescopic block 705, and the output end of the second motor 708 is fixedly connected with the second screw rod 709.

[0052] The position of the camera module 8 is adjusted in the second direction.

[0053] Preferably, the first telescopic block 705 is in the shape of "L", and the lower surface of the first telescopic block 705 is provided with the inclined support 707.

[0054] The bending strength of the first telescopic block 705 is improved.

[0055] Preferably, the air cylinder 5 is provided with four parts.

[0056] The backlight module 4 is better adjusted to change the direction.

[0057] The working principle and use process of the present application: in use, according to the side length of the backlight module 4, the adjusting screw 3051 is rotated, the adjusting screw 3051 is rotated to rotate the adjusting sliding block 3052 to move in the connecting sliding groove, and then the second supporting plate 303 is pushed to move through the spring 3053 and the guide sliding block 3054, and the position of the other second supporting plate 303 can be adjusted in the same way. After adjustment, the second supporting plate 303 is pulled to move away from the first supporting plate 301, at this time the spring 3053 is elastically elongated, the backlight module 4 is placed inside the limiting frame surrounded by the plurality of clamping blocks 302, the second supporting plate 303 is loosened, the plurality of clamping blocks 302 are elastically clamped to the edge of the backlight module 4 through the spring 3053, and the position of the camera module 8 can be further adjusted to be in the center position above the backlight module 4, so as to take a photo of the backlight module 4. In the adjustment, the first motor 703 drives the first screw rod 702 to rotate to rotate the first sliding block, at this time the camera module 8 is moved in the first direction through the fixed block 704, the first telescopic block 705 and the second telescopic block 706, then the second motor 708 drives the second screw rod 709 to rotate to make the second telescopic block 706 extend from one end of the first telescopic block 705 to drive the camera module 8 to move in the second direction, when it is necessary to adjust the inclination, the air cylinder 5 can be elongated or shortened, at this time the clamping assembly 3 and the fixed table 2 are rotated through the universal ball 6 to make the clamping assembly 3 drive the backlight module 4 to incline to adjust the angle of external reflected light, the light of the bad point area of the backlight module is separated from the environmental reflected light, the contrast is improved, and the bad point is more easily distinguished.

[0058] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A backlight module detection device, characterized in that, The utility model relates to a back light module position adjusting device, including: Base (1), the fixed platform (2) is set up in the middle part of base (1) upper surface, Universal ball (6) is set up on fixed platform (2), and the upper end of universal ball (6) is connected with clamping assembly (3) through support rod, and back light module (4) is set up on clamping assembly (3), Cylinder (5) is fixed on the upper surface edge of base (1), and cylinder (5) is rotationally cooperated with clamping assembly (3), Wherein, clamping assembly (3) includes first support plate (301), clamping block (302), second support plate (303) and elastic structure (305), the two side edges of first support plate (301) are provided with second support plate (303), and the one side of second support plate (303) is provided with elastic structure (305) matched with first support plate (301), and the upper surface edge of first support plate (301) and second support plate (303) is provided with clamping block (302) for limiting back light module (4), Elastic structure (305) includes adjusting screw rod (3051), adjusting sliding block (3052), spring (3053) and guide sliding block (3054), the inner side of first support plate (301) is provided with connecting sliding groove, adjusting sliding block (3052) and guide sliding block (3054) are arranged in parallel in the inner side of connecting sliding groove, and spring (3053) is connected between adjusting sliding block (3052) and guide sliding block (3054), adjusting screw rod (3051) is rotationally installed in the middle part of the inner side of connecting sliding groove, and adjusting screw rod (3051) and adjusting sliding block (3052) are matched through screw thread part, The one end of base (1) is provided with position adjusting assembly (7), and the one end of position adjusting assembly (7) has camera module (8) for taking pictures to back light module (4), Position adjusting assembly (7) includes first guide rail (701), first screw rod (702), first motor (703), fixed block (704) and first telescopic block (705), first guide rail (701) is fixed on the one end surface of base (1), first screw rod (702) is rotationally installed in the inner side of first guide rail (701), and first sliding block is sleeved on the outer surface of first screw rod (702) and is matched with screw thread, fixed block (704) is fixed on first sliding block, first telescopic block (705) is sleeved on fixed block (704), and the one side wall of first telescopic block (705) is provided with adjusting bolt in contact with fixed block (704), and the one end of first guide rail (701) is provided with first motor (703) matched with first screw rod (702). The position adjusting assembly (7) further comprises a second telescopic block (706), a second motor (708) and a second screw rod (709), the second telescopic block (706) is slidingly installed at the inner side of one end of the first telescopic block (705), the inner side of the second telescopic block (706) is connected with the second screw rod (709) through a threaded portion, the second screw rod (709) is rotationally matched with the first telescopic block (705) through a connecting hole, the second motor (708) is fixed to one side wall of the first telescopic block (705), and the output end of the second motor (708) is fixedly connected with the second screw rod (709); The first telescopic block (705) is in the shape of "L", and the lower surface of the first telescopic block (705) is provided with an inclined support (707); The air cylinder (5) is provided with four parts. According to the size of the backlight module of different specifications, the fixed position of one end of the rotating sending adjusting spring is adjusted, so that the spring is in the appropriate elongation when clamped.

2. The backlight module detection device of claim 1, wherein: The end of the guide sliding block (3054) is provided with a guide hole (3055) matched with the adjusting screw rod (3051).

3. The backlight module detection device of claim 1, wherein: The cross section of the guide sliding block (3054) is in the shape of "convex".

4. The backlight module detection device of claim 1, wherein: The top end of the air cylinder (5) is fixed with a ball head (501), and the lower surface of the clamping assembly (3) is provided with ball grooves matched with the ball head (501) at four corners.

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