Manufacturing Method and System of an Energy-Saving MiniLED Backlight Module

Abstract

The present invention discloses a manufacturing method and system for an energy-saving MiniLED backlight module, specifically related to the technical field of backlight modules. The system includes a housing conveying unit, an internal structural component feeding system, an assembly operation driving unit, and a grasping unit. A covering is arranged on the outer side of the grasping disc, and the covering is used to fit with the outer wall of the housing. A downward extension structure is arranged at the bottom of the grasping disc, and the downward extension structure corresponds to the inner wall of the housing. An air extraction space is formed between the covering and the downward extension structure. An air extraction pipe communicating with the air extraction space is arranged on the grasping disc, and the air extraction pipe is connected to an air extraction device. By extracting air from the air extraction space, during the descent of the backlight panel assembly, the air at its bottom will not generate reverse extrusion on the backlight panel assembly, greatly ensuring the manufacturing quality of the MiniLED backlight module. During actual assembly, the lowering speed of the backlight panel assembly can also be increased, further improving the assembly efficiency and saving production costs.

Description

Technical Field

[0001] The present invention relates to the technical field of backlight modules, and more specifically, to a manufacturing method and system for an energy-saving MiniLED backlight module. Background Art

[0002] The MiniLED backlight module uses MiniLED chips that are smaller than traditional LEDs to provide backlight. This technology combines the advantages of LCD panels and MiniLEDs, and can significantly improve the display quality without significantly increasing costs. Since MiniLEDs can adjust the brightness of each area according to the display content, it can be more energy-efficient than traditional LED backlights.

[0003] The MiniLED backlight module mainly consists of structures such as MiniLED chips, printed circuit boards (PCBs), driver ICs, reflectors, light guide plates (LGPs), diffusion sheets, brightness enhancement films (BEFs), and housings.

[0004] In the production and manufacturing process of the MiniLED backlight module, circuit patterns need to be printed or etched on the PCB board, and MiniLED chips and other electronic components are mounted on the PCB board using technologies such as SMT. Then, the reflector is placed on the PCB board to ensure it is in close contact with the PCB board to maximize the light reflection efficiency and reduce light loss (in some backlight modules, a reflective film is mounted on the surface of the PCB board or a reflective coating is set for direct reflection), forming a backlight board assembly. Then, the backlight board is installed in its corresponding housing, and optical structures such as light guide plates (LGPs), diffusion sheets, and brightness enhancement films (BEFs) are sequentially installed on the backlight board assembly. Then, the housing is closed and each structure is fixed.

[0005] For some MiniLED backlight module products, in order to reduce the overall thickness of the backlight module and improve the vibration and shock resistance of the backlight module, a flexible substrate (flexible printed circuit board, FPC) is used to make the backlight board assembly. Since a large number of densely packed MiniLED chips are surface-mounted on the substrate, when grasping and installing the backlight board assembly, full-support adsorption clamping cannot be used (to avoid the adsorption or grasping structure affecting the MiniLED chips). Therefore, a local support method needs to be used. For example, four groups of adsorption structures are used to adsorb and grasp the positions near the four top corners of the backlight board assembly and install them.

[0006] Among them, for some display screens with narrow border requirements, the corresponding backlight module also has a relatively narrow border. This requires the backlight board assembly to fully adapt to and fill the inside of the housing to ensure that the light-emitting source can cover the entire coverage area of the housing. Therefore, in the design, the edge of the backlight board assembly needs to be as compatible with the housing border as possible, and the edge gap of the backlight board assembly should not be too large.

[0007] When placing the backlight panel assembly inside the housing, due to the large coverage area of the backlight panel assembly, a structure similar to a piston is formed. During the installation process, the air inside the housing cannot be quickly discharged, which in turn forms a reverse effect on the backlight panel assembly. Especially for large backlight panel assemblies, the middle part is easily bulged upward by the reverse extrusion of the air inside the housing, thereby pulling on the materials at the corners, and further causing a lateral tension or even sliding between the adsorption structure and the area of the backlight panel assembly it adsorbs. This will further cause lateral extrusion of the MiniLED chips in direct contact with or near the adsorption structure, and in severe cases, even cause the MiniLED chips to fall off, affecting the production quality. When the above-mentioned lateral tension is too large and causes displacement between the adsorption structure and the backlight panel assembly, it will also affect the assembly accuracy and have a great impact on the manufacturing and production of the MiniLED backlight module. Summary of the Invention

[0008] A manufacturing method and system for an energy-saving MiniLED backlight module provided by the present invention aims to solve the problem that when the backlight panel assembly of the existing flexible substrate is placed inside the housing, the air inside the housing cannot be quickly discharged, which in turn forms a reverse effect on the backlight panel assembly and affects the backlight panel assembly. In severe cases, it may even cause the MiniLED chips to fall off, affecting the production quality.

[0009] To achieve the above object, the present invention provides the following technical solution: An energy-saving MiniLED backlight module manufacturing system includes a housing conveying unit, an internal structure feeding system, an assembly operation driving unit, and a grasping unit. The housing conveying unit is used to convey the housing, the internal structure feeding system is used to feed and convey the internal structure, the grasping unit includes a grasping disk, and multiple groups of vacuum suction cups are arranged on the grasping disk. The vacuum suction cups are connected to a vacuum pumping device;

[0010] A covering cover is arranged on the outer side of the grasping disk. The covering cover is used to fit with the outer wall of the housing. A downward extension structure is arranged at the bottom of the grasping disk, and the downward extension structure corresponds to the inner wall of the housing. An air extraction space is formed between the covering cover and the downward extension structure. A suction pipe communicating with the air extraction space is arranged on the grasping disk, and the suction pipe is connected to the air extraction device. When the internal structure enters the housing, the air extraction space communicates with the lower space of the internal structure through the gap between the internal structure and the housing.

[0011] In a preferred embodiment, an edge pressing assembly is arranged at the position corresponding to the edge of the backlight panel assembly at the bottom of the downward extension structure. The edge pressing assembly is used to fit with the edge of the internal structure, and the edge pressing assembly includes a soft pad structure.

[0012] In a preferred embodiment, the internal structural member feeding system includes a tray conveying assembly and a tray. The tray conveying assembly is used to convey the tray. The internal structural member includes a backlight panel assembly and a light-transmitting plate assembly, and the backlight panel assembly and the light-transmitting plate assembly are placed in the tray.

[0013] In a preferred embodiment, the edge pressing assembly further includes an arc-shaped movable frame. Two sets of arc-shaped movable frames are provided, and the two sets of arc-shaped movable frames are respectively arranged on two opposite sides of the grasping disk. Soft pad structures are respectively installed at the bottoms of the other two opposite sides of the grasping disk. A flexible pressing strip is fixedly installed at the bottom end of the arc-shaped movable frame. An arc-shaped guiding structure is arranged inside the grasping disk, and the arc-shaped movable frame is slidably matched with the arc-shaped guiding structure. A movable frame driver for driving the movement of the arc-shaped movable frame is also installed in the grasping disk. Adsorption holes are arranged in the flexible pressing strip, and the adsorption holes are connected to a vacuum pumping device.

[0014] In a preferred embodiment, the movable frame driver is a cylinder structure, and the arc-shaped movable frame is connected to the output end of the movable frame driver through a flexible shaft.

[0015] In a preferred embodiment, after the arc-shaped movable frame drives the edge of the backlight panel assembly to bend upward, a closed space is formed between the upper part of the backlight panel assembly and the inner cavity of the grasping disk. An inflation pipe is fixedly installed on the grasping disk, and the inflation pipe is connected to an inflation device. Multiple sets of distance sensors for detecting the distance between the backlight panel assembly and the grasping disk are arranged inside the grasping disk.

[0016] In a preferred embodiment, the flexible pressing strip is a rubber structure, the flexible pressing strip is fixedly bonded to the arc-shaped movable frame, and the connection surface between the arc-shaped movable frame and the flexible pressing strip is set as an inclined surface, and the side of the inclined surface close to the central area of the backlight panel assembly slopes downward.

[0017] In a preferred embodiment, the assembly operation driving unit includes a support frame. The support frame is arranged above the housing conveying unit and the internal structural member feeding system. A Y-axis driver is arranged on the support frame. An X-axis driver is arranged on the output end of the Y-axis driver. A Z-axis driver is arranged on the output end of the X-axis driver. The grasping disk is fixedly installed on the output end of the Z-axis driver. The Y-axis driver is used to drive the grasping unit to move along the Y-axis. The X-axis driver is used to drive the grasping unit to move along the X-axis. The Z-axis driver is used to drive the grasping unit to move up and down along the Z-axis.

[0018] In a preferred embodiment, a housing positioning unit is provided corresponding to the assembly station of the housing conveying unit. The housing positioning unit includes a mounting frame and a lifting frame. The mounting frame is fixedly installed on the housing conveying unit, the lifting frame is vertically arranged on the mounting frame, side clamping plates are slidably arranged at both ends of the lifting frame respectively, a positioning abutting plate is slidably arranged in the middle of the lifting frame, the side clamping plates slide along the length direction of the lifting frame, and the sliding direction of the positioning abutting plate is perpendicular to the sliding direction of the side clamping plates.

[0019] A manufacturing method of an energy-saving MiniLED backlight module includes the following steps:

[0020] Step 1: Convey the housing to the assembly station through the housing conveying unit, position the housing by the housing positioning unit, and at the same time convey the tray containing the backlight plate assembly and the light-transmitting plate assembly to the loading station through the tray conveying assembly;

[0021] Step 2: Drive the grasping unit to grasp the backlight plate assembly from the tray through the assembly operation driving unit and assemble the backlight plate assembly into the housing;

[0022] Step 3: When the cover contacts the outer wall of the housing to form a closed air extraction space, turn on the air extraction device to make the air extraction pipe extract air;

[0023] Step 4: When the backlight plate assembly is assembled in place, turn off the air extraction device, turn off the vacuum suction cup, and drive the grasping unit away from the housing;

[0024] Step 5: Drive the grasping unit to reach the tray again, adsorb and grasp the light-transmitting plate assembly in the tray, and assemble the light-transmitting plate assembly into the housing;

[0025] Step 6: Output the assembled housing to the subsequent processing station through the housing conveying unit.

[0026] The beneficial effects of the present invention are as follows: When the backlight plate assembly descends in the housing, the present invention turns on the air extraction device, extracts air from the air extraction space through the air extraction pipe, so that the air below the backlight plate assembly can quickly overflow and be discharged from its edge gaps. Furthermore, during the descent of the backlight plate assembly, the air at its bottom will not generate a reverse extrusion force on the backlight plate assembly, and the backlight plate assembly will not generate a large amount of deformation during the descent, resulting in a lateral pulling force or displacement between the suction nozzle of the vacuum suction cup and its surface. Especially when there is dotting encapsulation on the surface of the MiniLED chip, it will not cause damage or scratches to the dotting encapsulation, greatly ensuring the manufacturing quality of the MiniLED backlight module. Since the present invention can accelerate the discharge of the air at the bottom of the backlight plate assembly through air extraction during the actual assembly process, therefore, during the actual assembly, the lowering speed of the backlight plate assembly can be increased, further improving the assembly efficiency and saving production costs. Description of the Drawings

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the manufacturing process of the present invention.

[0029] Figure 3 It is a state diagram of the grasping unit of the present invention installing the backlight panel assembly into the housing.

[0030] Figure 4 It is a schematic diagram of the air flow at the lower part during the installation of the backlight panel assembly of the present invention.

[0031] Figure 5 It is a state diagram of the present invention after improving the edge pressing assembly.

[0032] Figure 6 It is a state diagram of the improved edge pressing assembly of the present invention pressing down and restoring the warped part of the backlight panel assembly.

[0033] Figure 7 It is a top view of the internal structural member feeding system of the present invention.

[0034] Figure 8 It is a perspective view of the housing positioning unit of the present invention.

[0035] Figure 9 It is a state diagram of the housing positioning unit of the present invention fully positioning the housing.

[0036] Figure 10 It is a schematic diagram of the adsorption position of the suction nozzle of the vacuum suction cup of the present invention and the backlight panel assembly.

[0037] Figure 11 It is a flowchart of the manufacturing method of the present invention.

[0038] Reference numerals are: 1. Housing conveying unit; 2. Internal structural member feeding system; 21. Tray conveying assembly; 22. Tray; 23. Internal structural member; 231. Backlight panel assembly; 232. Light-transmitting plate assembly; 3. Assembly operation driving unit; 31. Support frame; 32. Y-axis driver; 33. X-axis driver; 34. Z-axis driver; 4. Grasping unit; 41. Grasping disc; 411. Downward extension structure; 412. Arc-shaped guiding structure; 42. Vacuum suction cup; 43. Cover; 431. Air extraction space; 432. Air extraction pipe; 44. Edge pressing assembly; 441. Soft pad structure; 442. Arc-shaped movable frame; 443. Flexible pressing strip; 444. Movable frame driver; 445. Adsorption hole; 45. Inflation pipe; 5. Housing positioning unit; 51. Mounting frame; 52. Lifting frame; 53. Side clamping plate; 54. Positioning abutting plate; 6. Housing. Detailed implementation manners

[0039] The present application will be further described in detail below with reference to the accompanying drawings. It is necessary to point out here that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0040] Refer to the attached Figures 1 to 10 , a manufacturing system for an energy-saving MiniLED backlight module, including a housing conveying unit 1, an internal structure feeding system 2, an assembly operation driving unit 3, and a grasping unit 4. The housing conveying unit 1 is used to convey the housing 6. The internal structure feeding system 2 is used to feed the internal structure 23. The internal structure 23 includes a backlight board assembly 231 and a light-transmitting board assembly 232. The grasping unit 4 is used to adsorb and grasp the backlight board assembly 231 and the light-transmitting board assembly 232. The assembly operation driving unit 3 is used to drive the grasping unit 4 to move so that it can perform a movement conversion between the feeding station on the internal structure feeding system 2 and the assembly station on the housing conveying unit 1.

[0041] During actual manufacturing, the housing conveying unit 1 conveys the housing 6 to the assembly station. The grasping unit 4 first adsorbs and grasps the backlight board assembly 231 from the feeding station of the internal structure feeding system 2, and is driven by the assembly operation driving unit 3 to move to the assembly station of the housing conveying unit 1, and assembles the backlight board assembly 231 into the interior of the housing 6. Then, the light-transmitting board assembly 232 is adsorbed and assembled into the housing 6. Among them, the backlight board assembly 231 is mainly a pre-combined structure of a flexible circuit board and a reflection structure. For the light-transmitting board assembly 232, it mainly includes a light guide plate, a diffusion sheet, a brightness enhancement film, etc.

[0042] It should be noted that in this embodiment, refer to the attached Figure 7 , the internal structure feeding system 2 mainly includes a tray conveying component 21 and a tray 22. The tray conveying component 21 is used to convey the tray 22. The backlight board assembly 231 and the light-transmitting board assembly 232 are pre-placed in the tray 22 and are conveyed to the feeding station by the tray conveying component 21 for the assembly operation driving unit 3 and the grasping unit 4 to pick up materials. Among them, the light-transmitting board assembly 232 can be a pre-combined structure of each structure or a separate structure. The backlight board assembly 231 and the light-transmitting board assembly 232 required for each group of MiniLED backlight module products are set in the same tray 22 according to their sizes and shapes for easy assembly operation. The above is only one of the feeding methods provided in this embodiment. In actual use, a separate conveying structure can also be used to convey and feed the backlight board assembly 231 and the light-transmitting board assembly 232.

[0043] Among them, the MiniLED chip, as the core light-emitting component, usually has a size between 50 and 200 microns, and can achieve fine brightness control. The printed circuit board (PCB) is used as the basis for carrying the MiniLED chip and other electronic components. The driving IC is responsible for providing current and voltage to the MiniLED and realizing the local dimming function. The reflector can maximize the light reflection efficiency and reduce light loss. The light guide plate is used to convert the point light source into a uniformly distributed surface light source. The diffusion sheet can mix and homogenize the light, eliminating bright spots or dark areas. The brightness enhancement film (BEF) can increase the light output intensity, and the housing is mainly used to fix all components and protect the internal structure, so that all structures form a complete backlight module.

[0044] Further, referring to the attached drawings of the specification Figure 2 and Figure 3 , the grasping unit 4 includes a grasping disk 41. A plurality of groups of vacuum suction cups 42 are arranged on the grasping disk 41. The vacuum suction cups 42 are connected to a vacuum pumping device, and the vacuum suction cups 42 adsorb the backlight board assembly 231 (or the light-transmitting board assembly 232) through the suction nozzles at their bottom ends (refer to the attached drawings of the specification Figure 10 , when designing the position of the vacuum suction cups 42, it is necessary to ensure that the actual contact part of the suction nozzles of the vacuum suction cups 42 does not contact the MiniLED chips on the backlight board assembly 231. Among them, the suction nozzles can be set separately according to the backlight board assembly 231, and try to make the MiniLED chips located at the center and outer positions of the suction nozzles). A cover 43 is arranged outside the grasping disk 41. The cover 43 fits against the outer wall of the housing 6 during assembly. A downward extension structure 411 is arranged at the bottom of the grasping disk 41. The downward extension structure 411 is correspondingly arranged with the inner wall of the housing 6 during assembly. An air extraction space 431 is formed between the cover 43 and the downward extension structure 411. An air extraction pipe 432 communicating with the air extraction space 431 is arranged on the grasping disk 41. The air extraction pipe 432 is connected to a vacuum pumping device (such as an air extraction pump). When the backlight board assembly 231 or the light-transmitting board assembly 232 enters the housing 6, the air extraction space 431 communicates with the lower space of the backlight board assembly 231 through the gap between the backlight board assembly 231 and the inner wall of the housing 6. And during the assembly process, referring to the attached drawings of the specification Figure 4The grab plate 41 drives the backlight panel assembly 231 to descend in the housing 6. At the same time, the suction device is turned on to extract air from the suction space 431 through the suction pipe 432, so that the air below the backlight panel assembly 231 can quickly overflow and be discharged from the edge gap thereof. In the process of the backlight panel assembly 231 descending, the air at its bottom will not produce reverse extrusion on the backlight panel assembly 231, and the backlight panel assembly 231 will not produce a large amount of deformation during the descending process, which will cause the suction nozzle of the vacuum suction cup 42 to generate lateral tension or even displacement with its surface, especially in Min. When there is glue packaging on the surface of the iLED chip, it will not cause damage or scratches to the glue packaging, which greatly ensures the manufacturing quality of the MiniLED backlight module. In addition, since the backlight panel assembly 231 is lowered more smoothly during assembly, the assembly accuracy of the backlight panel assembly 231 can also be improved. At the same time, since the present embodiment can accelerate the discharge of air at the bottom of the backlight panel assembly 231 by vacuuming during the actual assembly process, the lowering speed of the backlight panel assembly 231 can also be increased during actual assembly, thereby further improving assembly efficiency and saving production costs.

[0045] It should be noted that the above working method only takes the assembly of the backlight panel assembly 231 as an example. Since the size and shape of the backlight panel assembly 231 and the light-transmitting panel assembly 232 in the same group of MiniLED backlight modules are almost the same, the same group of grabbing units 4 can also perform the same operation on the light-transmitting panel assembly 232, especially when the light-transmitting panel assembly 232 also adopts a flexible structure, the same protection effect can also be provided to the light-transmitting panel assembly 232.

[0046] Refer to the instruction manual Figure 2 The assembly operation driving unit 3 includes a support frame 31, which is arranged above the shell conveying unit 1 and the internal structural parts feeding system 2. A Y-axis driver 32 is arranged on the support frame 31, and an X-axis driver 33 is arranged on the output end of the Y-axis driver 32. A Z-axis driver 34 is arranged on the output end of the X-axis driver 33. A grabbing plate 41 is fixedly installed on the output end of the Z-axis driver 34. The Y-axis driver 32 is used to drive the grabbing unit 4 to move along the Y-axis, the X-axis driver 33 is used to drive the grabbing unit 4 to move along the X-axis, and the Z-axis driver 34 is used to drive the grabbing unit 4 to move up and down along the Z-axis.

[0047] For further information, please refer to the attached manual. Figure 1 , Figure 8 and Figure 9, To ensure the assembly accuracy, a housing positioning unit 5 is provided corresponding to the assembly station of the housing conveying unit 1. The housing positioning unit 5 includes a mounting frame 51 and a lifting frame 52. The mounting frame 51 is fixedly installed on the housing conveying unit 1. The lifting frame 52 is vertically arranged on the mounting frame 51 and is driven to move vertically by a linear drive structure. Side clamping plates 53 are slidably arranged at both ends of the lifting frame 52, and a positioning abutting plate 54 is slidably arranged in the middle of the lifting frame 52. The side clamping plates 53 slide along the length direction of the lifting frame 52, and the sliding direction of the positioning abutting plate 54 is perpendicular to the sliding direction of the side clamping plates 53. In actual use, the housing 6 is first conveyed to the assembly station, then the lifting frame 52 is driven to descend, and then the side clamping plates 53 are driven to move to clamp both sides of the housing 6 in the Y-axis direction. Then the positioning abutting plate 54 is driven to move to abut and limit one side of the housing 6 in the X-axis direction, so as to realize the complete positioning of the housing 6. In addition to positioning, the above structure can also perform operations such as position adjustment on the housing 6 after clamping the housing 6, improving the practicability and convenience of the system.

[0048] It should be noted that the above Y-axis driver 32, X-axis driver 33, Z-axis driver 34, and the driving of the lifting frame 52, side clamping plates 53, and positioning abutting plate 54 all adopt common linear drive schemes, such as structures like cylinders and linear motors, and will not be elaborated in this embodiment.

[0049] In the above embodiment, during the assembly of the backlight plate assembly 231, the air at the bottom of it will quickly overflow from its edge, which is likely to cause the edge of the backlight plate assembly 231 to flip up and down, resulting in severe vibration. Therefore, the present embodiment also provides the following technical solution. Specifically, referring to the attached Figure 3 and Figure 4 , at the position corresponding to the edge of the backlight plate assembly 231 at the bottom of the downward extension structure 411, an edge pressing assembly 44 is provided. The edge pressing assembly 44 is used to fit with the edge of the backlight plate assembly 231 when the backlight plate assembly 231 is lowered. Among them, referring to the attached Figure 6 , the edge pressing assembly 44 can simply adopt a soft pad structure 441. In this embodiment, the soft pad structure 441 can be a structure distributed in a rectangle around the periphery of the backlight plate assembly 231. When the backlight plate assembly 231 enters the housing 6 downward, the bottom of the soft pad structure 441 is always in contact with the surface of the backlight plate assembly 231, avoiding the vibration of the edge of the backlight plate assembly 231 caused by air flow.

[0050] Further, referring to the attached Figure 5, the edge pressing component 44 can also be a movable structure. Specifically, the edge pressing component 44 further includes an arc-shaped movable frame 442. Two sets of arc-shaped movable frames 442 are provided, and the two sets of arc-shaped movable frames 442 are respectively arranged on two opposite sides of the grasping disc 41. Soft pad structures 441 are respectively installed at the bottoms of the other two opposite sides of the grasping disc 41. A flexible pressing strip 443 is fixedly installed at the bottom end of the arc-shaped movable frame 442. An arc-shaped guiding structure 412 is arranged inside the grasping disc 41. The arc-shaped movable frame 442 is in sliding fit with the arc-shaped guiding structure 412. A movable frame driver 444 for driving the movement of the arc-shaped movable frame 442 is also installed in the grasping disc 41. Suction holes 445 are arranged in the flexible pressing strip 443. A flow channel for communicating with the flexible pressing strip 443 is arranged in the arc-shaped movable frame 442, and this flow channel is connected to a vacuum pumping device through a pipeline. That is, in actual use, the flexible pressing strip 443 can also form a vacuum adsorption. Among them, when initially grasping the backlight panel assembly 231, the bottom end of the flexible pressing strip 443 is flush with the bottom end of the vacuum chuck 42. That is, when initially grasping the backlight panel assembly 231, the backlight panel assembly 231 is in a flat state as a whole. After grasping, the edge pressing component 44 drives the flexible pressing strip 443 to move upward along an arc track, so that the flexible pressing strip 443 adsorbs the edge of the backlight panel assembly 231 to produce an upward bend. Since the arc-shaped movable frame 442 moves along an arc track, therefore, in this bent part, there will be no sliding phenomenon along the surface of the backlight panel assembly 231. During the downward assembly process of the backlight panel assembly 231, the two sides thereof are in an upwardly warped state, which can increase the gap between the edge of the backlight panel assembly 231 and the housing 6, and accelerate the rapid discharge of the air at the bottom of the backlight panel assembly 231. At the same time, since the upwardly warped backlight panel assembly 231 is shortened in the length direction, during assembly, the backlight panel assembly 231 is more likely to enter the housing 6, and it is not easy to have contact collision during the assembly process, improving the assembly accuracy. After the backlight panel assembly 231 is completely installed in the housing 6, then drive the arc-shaped movable frame 442 to move in the reverse direction, so that the backlight panel assembly 231 returns to a flat state, and release the vacuum adsorption of the suction holes 445 and the vacuum chuck 42, then the grasping disc 41 can be driven away to perform subsequent assembly operations.

[0051] It should be noted that the movable frame driver 444 can be designed with a corresponding arc-shaped motion driving structure alone, or a cylinder structure can be adopted. Specifically, the arc-shaped movable frame 442 is connected to the output end of the movable frame driver 444 through a flexible shaft. Then, by controlling the telescopic movement of the cylinder, the movement of the arc-shaped movable frame 442 can be controlled, and corresponding limiting structures are arranged in the arc-shaped guiding structure 412 to improve the accuracy of movement control.

[0052] Further, referring to the attached drawings of the specification Figure 5, after the arc-shaped movable frame 442 drives the edge of the backlight panel assembly 231 to bend upward, with the supplement of the soft pad structure 441, a closed space is formed between the upper part of the backlight panel assembly 231 and the inner cavity of the grasping disc 41. An inflation tube 45 is fixedly installed on the grasping disc 41. The inflation tube 45 is connected to an inflation device (such as an air pump), and multiple distance sensors for detecting the distance between the backlight panel assembly 231 and the grasping disc 41 are arranged inside the grasping disc 41. During the process of lowering the backlight panel assembly 231, the deformation of the backlight panel assembly 231 can be detected. When the backlight panel assembly 231 bulges upward, the displacement change will be detected by the distance sensor. At this time, air can be input into the grasping disc 41 through the inflation tube 45 to increase the air pressure and offset the pressure on the lower part of the backlight panel assembly 231, further avoiding the bulging of the backlight panel assembly 231. In addition, after the assembly is completed, when the flexible pressing strip 443 leaves the backlight panel assembly 231 and the grasping disc 41 rises, air can be input into the grasping disc 41 through the inflation tube 45 to accelerate the separation of the backlight panel assembly 231 and prevent the backlight panel assembly 231 from being taken out.

[0053] Further, referring to the attached drawings of the specification Figure 5 and Figure 6 , the flexible pressing strip 443 is of a rubber structure. The flexible pressing strip 443 is fixedly bonded to the arc-shaped movable frame 442, and the connection surface between the arc-shaped movable frame 442 and the flexible pressing strip 443 is set as an inclined surface. The side of the inclined surface close to the central area of the backlight panel assembly 231 slopes downward. Then, after the backlight panel assembly 231 is completely installed in the housing 6 and the warped part of the backlight panel assembly 231 returns to flatness, the arc-shaped movable frame 442 is controlled to continue to move downward, and an extrusion is generated on the flexible pressing strip 443. Affected by the above inclined surface, the flexible pressing strip 443 will generate extrusion deformation and generate an outward thrust on the backlight panel assembly 231, thereby forming a micro-tensile force on both sides of the backlight panel assembly 231, avoiding incomplete fitting at the bottom of the backlight panel assembly 231 after assembly, and further improving the assembly accuracy.

[0054] Referring to the attached drawings of the specification Figure 11 , the present invention also provides a manufacturing method of an energy-saving MiniLED backlight module, including the following steps:

[0055] Step 1: The housing 6 is conveyed to the assembly station through the housing conveying unit 1, and the housing 6 is positioned by the housing positioning unit 5. At the same time, the tray 22 containing the backlight panel assembly 231 and the light-transmitting plate assembly 232 is conveyed to the loading station through the tray conveying assembly 21;

[0056] Step 2: The grasping unit 4 is driven by the assembly operation driving unit 3 to grasp the backlight panel assembly 231 from the tray 22 and assemble the backlight panel assembly 231 into the housing 6;

[0057] Step 3: When the covering 43 contacts the outer wall of the housing 6 to form a closed air extraction space 431, turn on the air extraction device to extract air through the air extraction pipe 432;

[0058] Step 4: After the backlight panel assembly 231 is assembled in place, turn off the air extraction device, turn off the vacuum suction cup 42, and drive the grasping unit 4 away from the housing 6;

[0059] Step 5: Drive the grasping unit 4 to reach the tray 22 again, adsorb and grasp the light-transmitting plate assembly 232 in the tray 22, and assemble the light-transmitting plate assembly 232 into the housing 6;

[0060] Step 6: Output the assembled housing 6 to the subsequent processing station through the housing conveying unit 1.

[0061] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A manufacturing system for an energy-saving MiniLED backlight module, comprising a shell conveying unit (1), an internal structural component feeding system (2), an assembly operation drive unit (3) and a gripping unit (4), wherein the shell conveying unit (1) is used to convey the shell (6), and the internal structural component feeding system (2) is used to feed and convey the internal structural component (23), characterized in that: The gripping unit (4) comprises a gripping plate (41), on which a plurality of groups of vacuum suction cups (42) are arranged, and the vacuum suction cups (42) are connected to a vacuum extraction device; A covering cover (43) is arranged on the outside of the grabbing plate (41), and the covering cover (43) is used to fit with the outer wall of the shell (6). A downward extension structure (411) is arranged at the bottom of the grabbing plate (41), and the downward extension structure (411) is arranged corresponding to the inner wall of the shell (6). An exhaust space (431) is formed between the covering cover (43) and the downward extension structure (411). An exhaust pipe (432) connected to the exhaust space (431) is arranged on the grabbing plate (41), and the exhaust pipe (432) is connected to an exhaust device. When the internal structural component (23) enters the shell (6), the exhaust space (431) is connected to the lower space of the internal structural component (23) through a gap between the internal structural component (23) and the shell (6).

2. The manufacturing system of an energy-saving MiniLED backlight module according to claim 1, characterized in that: An edge pressing component (44) is provided at a position at the bottom of the downward extension structure (411) corresponding to the edge of the backlight panel component (231); the edge pressing component (44) is used to fit with the edge of the internal structural component (23); the edge pressing component (44) comprises a cushion structure (441).

3. The manufacturing system of an energy-saving MiniLED backlight module according to claim 2, characterized in that: The internal structural component loading system (2) comprises a tray conveying assembly (21) and a tray (22), wherein the tray conveying assembly (21) is used to convey the tray (22), and the internal structural component (23) comprises a backlight panel assembly (231) and a light-transmitting panel assembly (232), wherein the backlight panel assembly (231) and the light-transmitting panel assembly (232) are placed in the tray (22).

4. The manufacturing system of an energy-saving MiniLED backlight module according to claim 3, characterized in that: The edge pressing assembly (44) further comprises an arc-shaped movable frame (442), wherein two groups of the arc-shaped movable frames (442) are provided, and the two groups of the arc-shaped movable frames (442) are respectively provided on two opposite sides of the grabbing plate (41), and the bottoms of the other two groups of opposite sides of the grabbing plate (41) are respectively provided with a cushion structure (441), and a flexible pressing strip (443) is fixedly installed at the bottom end of the arc-shaped movable frame (442), and an arc-shaped guiding structure (412) is provided inside the grabbing plate (41), and the arc-shaped movable frame (442) and the arc-shaped guiding structure (412) are slidably matched, and a movable frame driver (444) for driving the arc-shaped movable frame (442) to move is also installed in the grabbing plate (41), and an adsorption hole (445) is provided in the flexible pressing strip (443), and the adsorption hole (445) is connected to a vacuum pumping device.

5. The manufacturing system of an energy-saving MiniLED backlight module according to claim 4, characterized in that: The movable frame driver (444) is a cylinder structure, and the arc-shaped movable frame (442) is connected to the output end of the movable frame driver (444) via a flexible shaft.

6. The manufacturing system of an energy-saving MiniLED backlight module according to claim 5, characterized in that: After the arc-shaped movable frame (442) drives the edge of the backlight panel assembly (231) to bend upward, a closed space is formed between the upper part of the backlight panel assembly (231) and the inner cavity of the grabbing plate (41); an inflation tube (45) is fixedly mounted on the grabbing plate (41); the inflation tube (45) is connected to an inflation device; and a plurality of distance sensors for detecting the distance between the backlight panel assembly (231) and the grabbing plate (41) are arranged inside the grabbing plate (41).

7. The manufacturing system of an energy-saving MiniLED backlight module according to claim 6, characterized in that: The flexible pressure strip (443) is of a rubber structure, and the flexible pressure strip (443) is fixedly bonded to the arc-shaped movable frame (442), and the connecting surface between the arc-shaped movable frame (442) and the flexible pressure strip (443) is arranged as an inclined surface, and the inclined surface is inclined downward on a side close to the central area of ​​the backlight panel assembly (231).

8. The manufacturing system of an energy-saving MiniLED backlight module according to claim 7, characterized in that: The assembly operation drive unit (3) comprises a support frame (31), the support frame (31) being arranged above the shell conveying unit (1) and the internal structural component feeding system (2), the support frame (31) being provided with a Y-axis driver (32), the output end of the Y-axis driver (32) being provided with an X-axis driver (33), the output end of the X-axis driver (33) being provided with a Z-axis driver (34), the grabbing plate (41) being fixedly mounted on the output end of the Z-axis driver (34), the Y-axis driver (32) being used to drive the grabbing unit (4) to move along the Y-axis, the X-axis driver (33) being used to drive the grabbing unit (4) to move along the X-axis, and the Z-axis driver (34) being used to drive the grabbing unit (4) to move up and down along the Z-axis.

9. The manufacturing system of an energy-saving MiniLED backlight module according to claim 8, characterized in that: The shell conveying unit (1) is provided with a shell positioning unit (5) corresponding to its assembly station. The shell positioning unit (5) comprises a mounting frame (51) and a lifting frame (52). The mounting frame (51) is fixedly mounted on the shell conveying unit (1). The lifting frame (52) is vertically arranged on the mounting frame (51). Side clamping plates (53) are slidably arranged at both ends of the lifting frame (52). A positioning abutment plate (54) is slidably arranged in the middle of the lifting frame (52). The side clamping plate (53) slides along the length direction of the lifting frame (52). The sliding direction of the positioning abutment plate (54) is arranged perpendicular to the sliding direction of the side clamping plate (53).

10. A method for manufacturing an energy-saving MiniLED backlight module manufacturing system according to claim 9, characterized in that: The following steps are involved: Step 1: The shell (6) is transported to the assembly station by the shell transport unit (1), and the shell (6) is positioned by the shell positioning unit (5), and at the same time, the tray (22) equipped with the backlight panel assembly (231) and the light-transmitting panel assembly (232) is transported to the loading station by the tray transport assembly (21); Step 2: driving the grabbing unit (4) to grab the backlight panel assembly (231) from the tray (22) through the assembly operation driving unit (3), and assembling the backlight panel assembly (231) into the housing (6); Step 3: When the cover (43) contacts the outer wall of the shell (6) to form a closed exhaust space (431), the exhaust device is turned on to exhaust air through the exhaust pipe (432); Step 4: After the backlight panel assembly (231) is assembled in place, the exhaust device is turned off, the vacuum suction cup (42) is turned off, and the grabbing unit (4) is driven to leave the housing (6); Step 5: driving the grabbing unit (4) to reach the tray (22) again, sucking and grabbing the light-transmitting plate assembly (232) in the tray (22), and assembling the light-transmitting plate assembly (232) into the housing (6); Step six: The assembled shell (6) is output to a subsequent processing station through the shell conveying unit (1).

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