Liquid crystal filling and frame sealing integrated device for LCD display device

Abstract

The application discloses a kind of liquid crystal filling and frame sealing integration device of LCD display device, it is related to liquid crystal display processing technical field, including: negative pressure machine, the tail end of the negative pressure machine is equipped with coating machine, one end of the coating machine is equipped with electric telescopic clamping arm, the inner chamber of the negative pressure machine is equipped with crystal filling mechanism, the bottom of the crystal filling mechanism is equipped with liquid crystal cell;The crystal filling mechanism includes truss connected on the inner side wall of negative pressure machine, the top of the truss is equipped with closed sliding table;The bottom of the truss is rotatably connected with mounting bracket, and a plurality of fixed components are telescopically connected on the mounting bracket;The application realizes the efficient filling of liquid crystal by negative pressure main control and capillary auxiliary combination, cooperates with the precise extrusion structure of memory alloy heated deformation drive to optimize liquid crystal filling effect, simultaneously improves frame sealing reliability by light initiator synchronous penetration and UV rapid curing, greatly improves the processing efficiency of LCD cell forming process and product yield.

Description

Technical Field

[0001] This invention relates to the field of liquid crystal display processing technology, specifically to an integrated device for liquid crystal filling and sealing of an LCD display device. Background Technology

[0002] With the rapid development of flat panel display technology, LCD display devices have been widely used in consumer electronics, industrial displays, automotive terminals and other fields due to their advantages such as low power consumption, high image quality and thinness. The liquid crystal cell assembly process is the main process in the production and manufacturing of LCD display devices. The processing accuracy and efficiency of liquid crystal filling and frame sealing directly determine the display performance, structural reliability and production yield of LCD display devices, and are the main focus of technological research and development in the industry.

[0003] In existing technologies, to improve the processing efficiency of LCD cell assembly, the industry has gradually developed related technical solutions such as vacuum liquid crystal filling devices and integrated sealing and curing equipment, achieving semi-automated processing of liquid crystal filling and sealing processes, and optimizing the production process to a certain extent. However, in actual mass production applications, existing technical solutions still have several technical bottlenecks:

[0004] Firstly, the liquid crystal infusion filling effect is poor, and filling defects are easily generated: the existing vacuum infusion process relies only on pressure difference and capillary force to achieve liquid crystal filling. For the corners, slits and other small areas inside the glass cell, the problem of insufficient liquid crystal filling is very easy to occur, which can easily form residual cavities and air bubbles. At the same time, the uneven liquid crystal flow rate during the infusion process can also easily generate filling tear marks, which seriously affect the display performance and yield of the product. Furthermore, the existing auxiliary filling extrusion structure is mostly rigidly driven, and the extrusion force and deformation cannot be precisely controlled, which can easily cause the glass substrate to break and the sealant structure to be damaged. It is also impossible to achieve cyclic dynamic extrusion to remove residual air, which makes it difficult to meet the processing requirements of high-precision LCD devices.

[0005] Secondly, the curing efficiency and sealing reliability of the sealant are insufficient: Existing integrated crystal filling devices mostly use a method of overall heating and curing after crystal filling to process the sealant. If the sealant is not fully cured during the crystal filling process, the high-speed flowing liquid crystal can easily wash away the sealant layer, resulting in sealant line displacement, missing sealant at the edges, and even liquid crystal seepage into the sealant layer, causing internal device contamination problems. On the other hand, existing photocuring solutions mostly use the form of premixing photoinitiators into the sealant in advance. This not only has the problem of short sealant storage period and easy premature curing, but also easily leads to defects such as incomplete curing and poor curing consistency caused by uneven mixing of photoinitiators, which cannot guarantee the long-term sealing reliability of the glass box frame.

[0006] Third, the low integration of processes limits production efficiency: In the existing LCD cell assembly process, the main processes such as photoinitiator penetration, liquid crystal injection, sealant curing, and sealing are mostly carried out in a discrete processing mode with separate equipment and workstations. The workpieces need to be repeatedly transferred between multiple machines, which not only requires a lot of manual intervention and results in low production efficiency, but also easily leads to problems such as workpiece contamination and misalignment during the transfer process. The few existing integrated equipment can only realize the simple integration of crystal injection and curing processes, and cannot realize continuous closed-loop processing of the entire process. The degree of automation is insufficient and it is difficult to adapt to the high-efficiency processing requirements of large-scale mass production. Summary of the Invention

[0007] The purpose of this invention is to provide an integrated liquid crystal injection and sealing device for LCD display devices. This device integrates the entire process of sealing adhesive photoinitiator infiltration, negative pressure liquid crystal injection, sealing curing, and terminal sealing. It achieves efficient liquid crystal injection through a combination of negative pressure-driven and capillary-assisted methods. The precise extrusion structure driven by the thermal deformation of shape memory alloy optimizes the liquid crystal filling effect. At the same time, the synchronous infiltration of photoinitiator and rapid UV curing improve the sealing reliability of the sealing frame, which greatly improves the processing efficiency and product yield of the LCD cell assembly process.

[0008] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0009] This invention provides an integrated liquid crystal filling and sealing device for an LCD display device, comprising: a negative pressure machine; a coating machine at the tail end of the negative pressure machine; an electrically telescopic clamping arm at one end of the coating machine; a crystal filling mechanism within the inner cavity of the negative pressure machine; and a liquid crystal pool at the bottom end of the crystal filling mechanism. The crystal filling mechanism includes a truss connected to the inner wall of the negative pressure machine, and a closed slide at the top end of the truss. A mounting frame is rotatably connected to the bottom end of the truss, and multiple fixing components are telescopically connected to the mounting frame. A clamping machine is also provided on the mounting frame, and storage cylinders for storing photoinitiator are provided at both ends of the clamping machine. An extrusion component is provided inside the storage cylinder, and one end of the extrusion component is in contact with the fixing components.

[0010] According to some embodiments of the present invention, the crystal filling mechanism further includes a drive motor disposed at the bottom end of the truss, the power output end of the drive motor is provided with a main shaft, the main shaft rotates through the truss, and the outer side wall of the main shaft is fixedly connected to the mounting bracket; a limit groove is provided at the top end of the truss.

[0011] According to some embodiments of the present invention, a servo motor is provided at one end of the closed slide, a sealing pump connected to the servo motor is provided at the bottom end of the closed slide, and a sealing discharge end with a conical shape is provided at the bottom end of the sealing pump.

[0012] According to some embodiments of the present invention, the mounting bracket is provided with a plurality of plug-in cylinders, the inner cavity of the plug-in cylinders is connected to a heating rod, and the outer side of the heating rod is fitted with a heat insulation frame.

[0013] According to some embodiments of the present invention, the fixing assembly includes a shape memory alloy strip connected to the side wall of the heating rod. The shape memory alloy strip is arched in an arc shape. The arched end of the shape memory alloy strip abuts against a contact piece. A clamping groove plate is installed at one end of the contact piece. A sliding plate is provided on the side wall of the clamping groove plate. One end of the sliding plate is slidably connected to one side of the insulation frame. A slot is opened in the inner cavity of the clamping groove plate. A glass box is provided in the inner cavity of the slot. A conveying channel is opened inside the clamping groove plate. One end of the conveying channel has a one-way opening. The end of the conveying channel communicating with the slot has a discharge port.

[0014] According to some embodiments of the present invention, the inner cavity of the clamping machine is provided with two clamping plates that can be raised and lowered, and the inner sidewalls of the two clamping plates and the clamping groove plate are provided with a plurality of UV lamps arranged in an array.

[0015] According to some embodiments of the present invention, the extrusion assembly includes a sealing cylinder that is inserted into the inner cavity of the storage cylinder, a pressure rod that is slidably inserted into the inner cavity of the sealing cylinder, and a pressure plate is provided at one end of the pressure rod; the inner cavity of the pressure rod is provided with a through groove that communicates with the conveying channel.

[0016] According to some embodiments of the present invention, both the storage cylinder and the mounting frame are provided with feeding grooves in their inner cavities. The other end of the feeding groove is connected to a rotating disk. The outer side wall of the rotating disk is densely connected with collars, and the collars are provided with feeding pipes.

[0017] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0018] 1. This invention utilizes a heating rod to conduct heat to a shape memory alloy strip, causing slight deformation and thus a compression method. This slight compression applies to both sides of the glass box, resulting in a minor adjustment of the internal space. This pushes residual air within the box towards the filling opening and expels it. Simultaneously, it promotes the full penetration of liquid crystal into areas that are difficult to fill using conventional filling methods, such as corners and slits. This avoids filling tear marks caused by uneven liquid crystal filling front, delayed filling in corner areas, and residual air hindering the smooth spread of liquid crystal. It effectively solves the technical problems of insufficient liquid crystal filling and the formation of residual cavities in existing technologies. Combined with the dynamic adjustment of the negative pressure value of the negative pressure machine, the liquid crystal filling effect can be further enhanced, significantly reducing the generation of cavities and air bubbles in the glass box, and significantly improving the overall quality of liquid crystal filling and the yield of finished products.

[0019] 2. This invention combines pressure transmission with negative pressure-assisted penetration to fuse the photoinitiator with the pre-coated sealant of the glass box. Combined with UV curing, the sealant mixed with the photoinitiator can be instantly polymerized and hardened, significantly shortening the curing time. At the same time, it effectively avoids the problems of sealant line displacement, edge missing sealant, and liquid crystal contamination caused by the high-speed flow of liquid crystal due to incomplete curing of the sealant during the crystal pouring process. This ensures the sealing reliability and structural stability of the glass box frame.

[0020] 3. This invention utilizes a negative pressure-dominated, capillary-assisted liquid crystal injection method. It leverages the pressure difference between the inside and outside of the glass cell to achieve rapid liquid crystal injection, while simultaneously using the generated capillary force to assist in filling corners and narrow areas. This significantly improves liquid crystal injection efficiency, reduces injection dead zones, and initially lowers the probability of residual air bubbles within the glass cell. Furthermore, it integrates photoinitiator penetration, liquid crystal injection, sealant curing, and sealing operations into a single device, achieving continuous connection of the entire process. This eliminates the need for manual intervention and workpiece transfer between multiple devices, forming a fully automated, integrated processing method that greatly improves the production efficiency of LCD display devices.

[0021] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0022] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the installation position structure of the crystal filling mechanism and clamping machine of the present invention;

[0025] Figure 3 This is a schematic diagram of the electric telescopic clamping arm structure of the present invention;

[0026] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 This is a schematic diagram of the limiting groove and main shaft structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the enclosed slide structure of the present invention;

[0029] Figure 7 This is a schematic diagram of the clamping mechanism structure of the present invention;

[0030] Figure 8 This is a schematic diagram of the contact sheet structure of the present invention;

[0031] Figure 9 This is a schematic diagram of the shape memory alloy bar structure of the present invention;

[0032] Figure 10 This is a schematic diagram of the clamping plate and UV lamp structure of the present invention;

[0033] Figure 11 This is a schematic diagram of the rotating disk structure of the present invention;

[0034] Figure 12 This is a schematic cross-sectional view of the rotating disk structure of the present invention;

[0035] Figure 13 This is a schematic cross-sectional view of the clamping groove plate of the present invention;

[0036] Figure 14 This is a magnified view of section B in section 13;

[0037] In the picture:

[0038] 1. Negative pressure machine; 101. Electric telescopic clamping arm;

[0039] 2. Coating machine;

[0040] 3. Crystal filling mechanism; 31. Truss; 311. Limiting groove; 32. Enclosed slide; 321. Servo motor; 322. Sealing pump; 323. Sealing outlet; 33. Mounting frame; 331. Insert sleeve; 332. Heating rod; 333. Insulation frame; 34. Fixing component; 341. Shape memory alloy bar; 342. Contact piece; 343. Clamping slot plate; 3431. Sliding plate; 3432. Slot; 3433. Glass box; 3434. Conveying channel; 3435. One-way opening; 3436. Outlet; 35. Drive motor; 36. Spindle;

[0041] 4. Liquid crystal pool;

[0042] 5. Clamping machine; 51. Clamping plate; 52. UV lamp;

[0043] 6. Storage cylinder; 61. Feed chute; 62. Rotary disc; 63. Collar; 64. Feed pipe;

[0044] 7. Extrusion assembly; 71. Sealing cylinder; 72. Pressure rod; 73. Pressure plate; 74. Through groove. Detailed Implementation

[0045] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0046] To solve these problems, such as Figures 1-14 As shown, the present invention provides an integrated liquid crystal filling and sealing device for an LCD display device, comprising: a negative pressure machine 1, a coating machine 2 at the tail end of the negative pressure machine 1, an electrically telescopic clamping arm 101 at one end of the coating machine 2, a crystal filling mechanism 3 in the inner cavity of the negative pressure machine 1, and a liquid crystal pool 4 at the bottom end of the crystal filling mechanism 3; the crystal filling mechanism 3 includes a truss 31 connected to the inner wall of the negative pressure machine 1, a closed slide 32 at the top end of the truss 31; a mounting frame 33 rotatably connected to the bottom end of the truss 31, and multiple fixing components 34 telescopically connected to the mounting frame 33; a clamping machine 5 is also provided on the mounting frame 33, and a storage cylinder 6 for storing photoinitiator is provided at both ends of the clamping machine 5, and an extrusion component 7 is provided inside the storage cylinder 6, with one end of the extrusion component 7 in contact with the fixing component 34. By integrating the coating machine 2, the electric telescopic clamping arm 101, the crystal filling mechanism 3, and the liquid crystal cell 4 into the supporting system of the negative pressure machine 1, an integrated installation foundation is provided for the integrated continuous processing of the entire process of LCD liquid crystal filling and sealing. Among them, the electric telescopic clamping arm 101 can realize the automatic feeding and precise insertion of the glass box 3433 with pre-applied sealing glue, without the need for manual feeding. The truss 31 provides stable support for each moving part, and the mounting frame 33 can simultaneously carry multiple sets of fixing components 34 to realize the simultaneous processing of multiple workpieces. The extrusion component 7 and the fixing component 34 are in contact and linked, which can trigger the quantitative delivery of photoinitiator while the glass box 3433 is being fed and positioned, realizing the synchronous linkage of feeding action and glue application action, greatly simplifying the control logic and improving processing efficiency.

[0047] The crystal filling mechanism 3 also includes a drive motor 35 located at the bottom of the truss 31. The power output end of the drive motor 35 is equipped with a main shaft 36, which rotates through the truss 31. The outer side wall of the main shaft 36 is fixedly connected to the mounting frame 33. A limiting groove 311 is provided at the top of the truss 31. The drive motor 35 can drive the main shaft 36 to rotate precisely, thereby driving the glass box 3433 on the mounting frame 33 and the fixed assembly 34 to rotate synchronously, realizing the precise switching of the glass box 3433 between the crystal filling station, the curing station, and the sealing station. There is no need to transfer the workpiece between multiple devices, and the entire process can be continuously transferred in the same cavity. The limiting groove 311 at the top of the truss 31 can precisely limit the sliding stroke of the sealing and discharge end 323, avoiding alignment deviation during the sealing process and ensuring the positional accuracy of the sealing adhesive.

[0048] A servo motor 321 is provided at one end of the enclosed slide 32, and a sealing pump 322 connected to the servo motor 321 is provided at the bottom of the enclosed slide 32. The bottom of the sealing pump 322 is provided with a conical sealing outlet 323. The servo motor 321 can precisely drive the enclosed slide 32 to move the sealing pump 322 and the sealing outlet 323 in a precise lateral direction, so as to achieve precise alignment with the filling opening of the glass box 3433. The sealing pump 322 can quantitatively deliver sealing glue, and with the conical sealing outlet 323, it can achieve uniform and precise coating of sealing glue, ensuring the sealing effect at the sealing position. At the same time, it can be used with the station switching of the glass box 3433 to realize automatic sealing operation without manual intervention, realizing seamless connection from crystal filling to sealing process.

[0049] The mounting bracket 33 is equipped with multiple plug-in tubes 331, the inner cavity of which is connected to a heating rod 332. An insulation frame 333 is fitted around the outer side of the heating rod 332. The plug-in tubes 331 provide a stable, extendable mounting base for the heating rod 332, adaptable to the clamping requirements of glass boxes 3433 of different sizes. The heating rod 332 can be precisely heated according to a preset temperature, providing a stable heat source for the deformation of the shape memory alloy bar 341, achieving precise control of the deformation of the shape memory alloy bar 341. The insulation frame 333 on the outer side of the heating rod 332 effectively reduces heat loss, preventing temperature fluctuations from affecting the deformation accuracy of the shape memory alloy bar 341, and also preventing heat diffusion from affecting other components inside the cavity, thus improving the stability of the device operation.

[0050] The fixing component 34 includes a shape memory alloy bar 341 connected to the side wall of the heating rod 332. The shape memory alloy bar 341 is arched in an arc shape. The arched end of the shape memory alloy bar 341 abuts against a contact piece 342. A clamping groove plate 343 is installed at one end of the contact piece 342. A sliding plate 3431 is provided on the side wall of the clamping groove plate 343. One end of the sliding plate 3431 is slidably connected to one side of the insulation frame 333. A slot 3432 is opened in the inner cavity of the clamping groove plate 3432. A glass box 3433 is provided in the inner cavity of the slot 3432. A conveying channel 3434 is opened inside the clamping groove plate 3433. One end of the conveying channel 3434 is provided with a one-way opening 3435. The end of the conveying channel 3434 that communicates with the slot 3432 is provided with a discharge port 3436. The slot 3432 inside the clamping plate 343 provides a precise positioning and installation space for the glass box 3433. Combined with the sliding connection between the sliding plate 3431 and the insulation frame 333, it ensures smooth sliding of the clamping plate 343 during extrusion, preventing the glass box 3433 from shifting. During the insertion of the glass box 3433 into the slot 3432, the extrusion assembly 7 is simultaneously triggered, allowing the photoinitiator in the storage cylinder 6 to enter the conveying channel 3434 through the one-way opening 3435, and finally be precisely extruded through the outlet 3436 to the three side walls of the glass box 3433. The one-way opening 3435 effectively prevents… The photoinitiator is prevented from flowing back, ensuring a uniform and stable coating amount. At the same time, the negative pressure environment created by the negative pressure machine 1 allows the photoinitiator to fully penetrate into the gaps of the glass box 3433 and evenly fuse with the sealant. The shape memory alloy bar 341 can produce a precise arc deformation with the temperature change of the heating bar 332, which in turn pushes the clamping groove plate 343 through the contact plate 342 to apply uniform extrusion force to both sides of the glass box 3433, causing a fine adjustment of the internal space of the glass box 3433, pushing the residual air in the box out, and prompting the liquid crystal to fully fill the corners and narrow areas, effectively solving the technical problems of insufficient liquid crystal filling and easy formation of cavities.

[0051] The clamping machine 5 has two lifting clamping plates 51 inside its cavity. Multiple UV lamps 52 arranged in an array are installed on the inner walls of both clamping plates 51 and the clamping groove plate 343. The lifting clamping plates 51 can stably clamp the glass box 3433, ensuring that the glass box 3433 does not shift during rotational pouring and compression fine-tuning, thus improving the stability of the processing. The array of UV lamps 52 on the inner walls of the clamping plates 51 and the clamping groove plate 343 can provide ultraviolet irradiation to the sealant coated on three sides of the glass box 3433 without any blind spots, causing the sealant mixed with photoinitiator to instantly polymerize and harden, significantly shortening the curing time of the sealant. This effectively avoids problems such as sealant line displacement and edge missing sealant caused by the high-speed flow of liquid crystal washing away the sealant layer during the crystal pouring process, ensuring the sealing reliability of the glass box 3433's frame.

[0052] The extrusion assembly 7 includes a sealed cylinder 71 that is inserted into the inner cavity of the storage cylinder 6. A pressure rod 72 is slidably inserted into the inner cavity of the sealed cylinder 71, and a pressure plate 73 is provided at one end of the pressure rod 72. The inner cavity of the pressure rod 72 is provided with a through groove 74 that communicates with the conveying channel 3434. The sealed cylinder 71 provides a sealed sliding space for the pressure rod 72. When the glass box 3433 is inserted into the slot 3432 and abuts against the pressure rod 72, the pressure rod 72 can slide smoothly along the sealed cylinder 71, thereby driving the pressure plate 73 to apply stable pressure to the photoinitiator in the storage cylinder 6, realizing the linkage triggering of the glass box 3433 feeding and positioning and the photoinitiator extrusion. No additional drive and control components are required, the structure is simple and reliable, and the action synchronization is strong. The through groove 74 in the inner cavity of the pressure rod 72 can be precisely connected to the conveying channel 3434 to ensure that the pressurized photoinitiator can be smoothly conveyed to the discharge port 3436, realizing the quantitative and stable extrusion of the photoinitiator.

[0053] Both the storage cylinder 6 and the mounting frame 33 have feeding grooves 61 inside their cavities. The other end of the feeding groove 61 is connected to a rotating disk 62. The outer wall of the rotating disk 62 is densely connected with collars 63, and a feed pipe 64 is provided on the collars 63. The feed pipe 64 can form a rotating connection structure with the rotating disk 62 through the collars 63. During the synchronous rotation of the mounting frame 33 with the main shaft 36, the feeding pipe can be effectively prevented from getting tangled, ensuring that the photoinitiator can be continuously replenished into the storage cylinder 6 through the feeding groove 61. This achieves a continuous and stable supply of photoinitiator without the need for machine downtime for replenishment, adapting to the needs of continuous and large-scale mass production processing, and further improving the processing efficiency of the device.

[0054] Working principle:

[0055] After the coating machine 2 applies the sealing adhesive to three sides of the glass box 3433, it activates the electric telescopic clamping arm 101 to precisely insert the glass box 3433 into the slot 3432 of the corresponding clamping groove plate 343. When one side of the glass box 3433 abuts against the clamping groove plate 343, it exerts a squeezing effect on the pressure rod 72. This pressure is transmitted to increase the pressure of the photoinitiator in the storage cylinder 6. The photoinitiator enters the conveying channel 3434 through the one-way opening 3435 and is then conveyed to the maximum... The photoinitiator is precisely extruded from the outlet 3436 onto the three side walls of the glass box 3433. Simultaneously, the negative pressure machine 1 is activated to extract the gas inside the glass box 3433 to create a negative pressure space. Under the action of capillary force, the photoinitiator gradually penetrates into the gaps inside the glass box 3433 and fuses with the already applied sealant. Through this combination of pressure transmission and negative pressure-assisted penetration, the photoinitiator and sealant can be quickly and uniformly fused, effectively avoiding the problem of uneven subsequent curing caused by insufficient local fusion.

[0056] Subsequently, the two clamping plates 51 of the clamping machine 5 are activated to firmly clamp the two sides of the glass box 3433. Then, the drive motor 35 is activated to drive the spindle 36 to rotate, causing the clamped glass box 3433 to rotate synchronously, so that the open end of the glass box 3433 is inserted into the liquid crystal cell 4. Since the gas inside the glass box 3433 has been extracted and a negative pressure environment has been formed, the liquid crystal in the liquid crystal cell 4 is rapidly injected under the dominant action of the internal and external pressure difference. At the same time, with the assistance of capillary force, the corners, slits and other areas of the glass box 3433 are filled, and finally the liquid crystal is rapidly immersed in and fills the entire internal space of the glass box 3433. Through this negative pressure-dominated and capillary-assisted injection method, the liquid crystal injection efficiency can be significantly improved, filling dead corners can be reduced, and the probability of residual air bubbles in the glass box 3433 can be initially reduced.

[0057] Next, connect the power supply to the UV lamp 52 and the heating rod 332;

[0058] After the UV lamp 52 is powered on, the sealant mixed with photoinitiator is cured by irradiation. It should be noted that the sealant mixed with photoinitiator can achieve instant polymerization and hardening after being irradiated by ultraviolet light, which greatly shortens the curing time. At the same time, it can effectively avoid problems such as sealant line displacement, edge missing sealant, and liquid crystal seepage into the sealant layer causing contamination due to incomplete curing of the sealant. This ensures that the sealant dries and sets quickly, guarantees the sealing of the glass box 3433 frame, and provides reliable support for the stable filling of liquid crystals.

[0059] After the sealant has cured, the heating rod 332 gradually heats up according to the preset temperature. At this time, the shape memory alloy strip 341 will arch slightly when heated. Through the slight arching of the shape memory alloy strip 341 on both sides of the glass box 3433, the contact piece 342 pushes the glass box 3433 to exert a slight pressure on both sides of the glass box 3433, causing the glass box 3433 to deform slightly. Its internal space is also slightly adjusted accordingly, so that the areas inside that are not filled with liquid crystal can be more fully immersed in liquid crystal. Through this extrusion method driven by the thermal deformation of the shape memory alloy, the technical problem of insufficient liquid crystal filling and easy formation of residual cavities in the corners and slits of the inner cavity of the glass box 3433 is effectively solved.

[0060] It should be noted that, in order to further improve the liquid crystal filling efficiency in the unfilled areas, the bending force of the shape memory alloy bar 341 can be adjusted by continuously adjusting the temperature change, thereby achieving a cycle of squeezing, releasing, and re-squeezing the glass cell 3433. This allows for repeated fine-tuning of the internal space of the glass cell 3433, pushing residual air to gather at the opening and be discharged, while simultaneously promoting the full penetration of liquid crystal into the unfilled areas. At the same time, the negative pressure value can be adjusted in conjunction with the negative pressure machine 1 to reduce the internal negative pressure value of the negative pressure machine 1, making the internal negative pressure value of the glass cell 3433 higher than the external environmental pressure. This helps to improve the filling effect of liquid crystal on the internal cavity of the glass cell 3433, reduce the formation of cavities inside the glass cell 3433, and improve the overall quality of liquid crystal filling.

[0061] Finally, after the liquid crystal filling is completed in all areas of the glass box 3433, the glass box 3433 is rotated to the top position by rotating the main shaft 36. The closed slide 32 is activated, driving the sealing outlet 323 to move laterally and perform lateral sliding extrusion sealing with the opening of the glass box 3433. Then, the sealing adhesive is heated and cured with the help of the heating strip, realizing the continuous connection of the liquid crystal filling, frame sealing and sealing process, without manual intervention and equipment transfer, forming an integrated fully automatic glue filling and sealing operation. Finally, the two clamping plates 51 of the clamping machine 5 clamp the two sides of the glass box 3433 after filling and remove it.

[0062] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An integrated liquid crystal filling and sealing device for an LCD display device, characterized in that, include: A negative pressure machine (1) is provided with a coating machine (2) at the tail end of the negative pressure machine (1), and an electric telescopic clamping arm (101) is provided at one end of the coating machine (2). A crystal filling mechanism (3) is provided in the inner cavity of the negative pressure machine (1), and a liquid crystal pool (4) is provided at the bottom end of the crystal filling mechanism (3). The crystal filling mechanism (3) includes a truss (31) connected to the inner wall of the negative pressure machine (1), and a closed slide (32) is provided at the top of the truss (31); a mounting frame (33) is rotatably connected to the bottom of the truss (31), and multiple fixed components (34) are telescopically connected to the mounting frame (33). The mounting bracket (33) is also equipped with a clamping machine (5), and both ends of the clamping machine (5) are equipped with storage cylinders (6) for storing photoinitiators. The storage cylinders (6) are equipped with extrusion components (7), and one end of the extrusion components (7) is in contact with the fixing components (34).

2. The integrated liquid crystal injection and encapsulation device for an LCD display device according to claim 1, characterized in that, The crystal filling mechanism (3) also includes a drive motor (35) located at the bottom of the truss (31). The power output end of the drive motor (35) is provided with a main shaft (36). The main shaft (36) rotates through the truss (31). The outer side wall of the main shaft (36) is fixedly connected to the mounting bracket (33). A limiting groove (311) is provided at the top of the truss (31).

3. The integrated liquid crystal injection and encapsulation device for an LCD display device according to claim 2, characterized in that, One end of the closed slide (32) is provided with a servo motor (321), and the bottom end of the closed slide (32) is provided with a sealing pump (322) that is connected to the servo motor (321) for transmission. The bottom end of the sealing pump (322) is provided with a sealing discharge end (323) that is set in a conical shape.

4. The integrated liquid crystal injection and encapsulation device for an LCD display device according to claim 3, characterized in that, The mounting bracket (33) is provided with multiple plug-in tubes (331), the inner cavity of the plug-in tube (331) is connected to a heating rod (332), and the outer side of the heating rod (332) is fitted with a heat insulation frame (333).

5. The integrated liquid crystal injection and encapsulation device for an LCD display device according to claim 4, characterized in that, The fixing component (34) includes a shape memory alloy bar (341) connected to the side wall of the heating rod (332). The shape memory alloy bar (341) is arched in an arc shape. The arched end of the shape memory alloy bar (341) abuts against a contact piece (342). A clamping groove plate (343) is installed at one end of the contact piece (342). A sliding plate (3431) is provided on the side wall of the clamping groove plate (343). One end of the sliding plate (3431) is slidably connected to one side of the heat insulation frame (333). A slot (3432) is opened in the inner cavity of the clamping groove plate (343). A glass box (3433) is provided in the inner cavity of the slot (3432). The clamping slot plate (343) has a conveying channel (3434) inside. One end of the conveying channel (3434) has a one-way opening (3435), and the end of the conveying channel (3434) that is connected to the slot (3432) has a discharge port (3436).

6. The integrated liquid crystal injection and encapsulation device for an LCD display device according to claim 1, characterized in that, The inner cavity of the clamping machine (5) is provided with two clamping plates (51) that can be raised and lowered. The inner sidewalls of the two clamping plates (51) and the clamping groove plate (343) are provided with multiple UV lamps (52) arranged in an array.

7. The integrated liquid crystal injection and encapsulation device for an LCD display device according to claim 1, characterized in that, The extrusion assembly (7) includes a sealing cylinder (71) that is inserted into the inner cavity of the storage cylinder (6). A pressure rod (72) is slidably inserted into the inner cavity of the sealing cylinder (71), and a pressure plate (73) is provided at one end of the pressure rod (72). The inner cavity of the pressure rod (72) is provided with a through groove (74) that communicates with the conveying channel (3434).

8. The integrated liquid crystal injection and encapsulation device for an LCD display device according to claim 7, characterized in that, The inner cavity of the storage cylinder (6) and the mounting frame (33) are both provided with a feeding groove (61). The other end of the feeding groove (61) is connected to a rotating disk (62). The outer side wall of the rotating disk (62) is densely connected with collars (63), and the collars (63) are provided with a feed pipe (64).

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