Dispensing equipment and dispensing method for improving surface flatness of liquid crystal display module

Abstract

The invention discloses dispensing equipment and a dispensing method for improving the surface flatness of a liquid crystal display module. The dispensing equipment comprises a spraying machine base, a clamping base, a polaroid needing to be dispensed and TFT glass needing to be dispensed, lifters are located at the four corners of the upper end of the spraying machine base correspondingly, lifting rods are arranged at the upper ends of the lifters, and the lower ends of the lifters are connected with the clamping base; and a lifting plate is positioned at the top of the lifting rod, a sliding rail is positioned in the middle of the upper end of the lifting plate, a rotating motor is movably arranged on the sliding rail, and a dispensing frame is arranged on the rotating motor. According to the dispensing equipment and the dispensing method for improving the surface flatness of the liquid crystal display module, the U-shaped groove is formed between the polaroid and the TFT glass, and then the groove is filled with the glue through the dispensing process, so that the polaroid and the TFT glass can be effectively bonded, and the supporting and shading effects can be achieved; only the polaroid can be seen from the front face of the product, and the flatness and attractiveness of the surface of the product are improved.

Description

Technical Field

[0001] This invention relates to the field of dispensing technology for liquid crystal display modules, and particularly to a dispensing device and method for improving the surface flatness of liquid crystal display modules. Background Technology

[0002] Dispensing equipment for improving the surface flatness of LCD modules is a supporting device for dispensing LCD modules. The structure of an LCD is to place a liquid crystal cell between two parallel glass substrates. TFTs (Thin Film Transistors) are set on the lower glass substrate, and color filters are set on the upper glass substrate. By changing the signals and voltages on the TFTs, the rotation direction of the liquid crystal molecules is controlled, thereby controlling whether polarized light is emitted from each pixel to achieve the display purpose. With the continuous development of technology, people's requirements for dispensing equipment to improve the surface flatness of LCD modules are also getting higher and higher.

[0003] Existing dispensing equipment for LCD modules has certain drawbacks. To achieve a four-sided effect, a matte metal decorative strip is attached to the ground side of the LCD module. As the adhesive strength of the decorative strip weakens, the risk of the strip coming off gradually increases. Furthermore, there are gaps between the decorative strip and the upper polarizer during attachment, which easily accumulate dust and foreign matter, affecting the overall aesthetics of the product and causing some adverse effects on the user experience. Therefore, we propose a dispensing equipment and method to improve the surface flatness of LCD modules. Summary of the Invention

[0004] Technical problem solved: To address the shortcomings of existing technologies, this invention provides a dispensing device and method for improving the surface flatness of liquid crystal display modules. A U-shaped groove is formed between the polarizer and the TFT glass, and then glue is used to fill this groove through a dispensing process. This not only enables effective bonding between the polarizer and the TFT glass, but also provides support and light-shielding effects, ensuring that only the polarizer is visible from the front of the product. This improves the flatness and aesthetics of the product surface, effectively solving the problems in the background technology.

[0005] Technical Solution: To achieve the above objectives, the technical solution adopted by this invention is as follows: a dispensing device for improving the surface flatness of a liquid crystal display module, comprising a spraying machine base, a clamping base, and a polarizing film and TFT glass to be dispensed with adhesive. Lifting machines are positioned at the four corners of the upper end of the spraying machine base. A lifting rod is provided at the upper end of the lifting machine. A lifting plate is positioned at the top of the lifting rod. A slide rail is positioned at the middle of the upper end of the lifting plate. A rotary motor is movably mounted on the slide rail. A dispensing frame is mounted on the rotary motor. A dispensing assembly and a glue cylinder are installed on the outside of the dispensing frame. A dispensing nozzle is provided at the front end of the dispensing assembly. CF glass is positioned between the polarizing film and the TFT glass, and a coating groove is formed between the polarizing film, the CF glass, and the TFT glass. The dispensing nozzle sprays adhesive into the coating groove.

[0006] As a preferred technical solution of this application, a support plate is positioned at the upper end of the clamping base, a top seat is positioned at the top of the support plate, a lifting motor is positioned at the upper end of the top seat, a lifter is provided at the bottom of the lifting motor, a lifting clamping plate is positioned at the bottom of the lifter, a positioning plate is installed at the front end of the support plate near the bottom, and a protective pad is positioned on the upper surface of the positioning plate.

[0007] As a preferred technical solution of this application, a rotating component is provided between the dispensing frame and the rotary motor, a spray nozzle is provided at the front end of the dispensing device, a spray valve is provided at the rear end of the dispensing device, a positioning frame is positioned between the dispensing device and the dispensing frame, a cylinder seat is positioned on the upper side of the lifting plate, a cylinder is installed inside the cylinder seat, a telescopic rod is provided at the end of the cylinder, and the telescopic rod is connected to the rotary motor.

[0008] As a preferred technical solution of this application, the lifting mechanism drives the lifting rod to rise and fall and drives the lifting plate to adjust up and down, the rotary motor moves horizontally on the slide rail, and the dispensing assembly sprays the adhesive inside the glue cylinder through the dispensing device.

[0009] As a preferred technical solution of this application, the support plate is welded and fixed to the top seat, the lifting motor drives the lifting device and drives the lifting clamping plate to move up and down, the lifting clamping plate is clamped and positioned with the positioning plate, and is sealed and protected by a protective pad.

[0010] As a preferred technical solution of this application, the rotary motor drives the rotary assembly and drives the dispensing frame to rotate and adjust. The dispensing device and the dispensing frame are fixed by a positioning frame, and the dispensing device is sprayed and controlled by a spray valve.

[0011] A dispensing method for improving the surface flatness of a liquid crystal display module includes the following steps: S1: First, apply a strip of UV adhesive to both ends of the TFT glass. After curing with a UV lamp, it can not only bond the TFT glass to the polarizer, but also form a barrier at both ends of the TFT glass to block subsequent glue filling. S2: After the damming colloid cures, a U-shaped groove is formed between the damming colloid, the polarizer, and the TFT glass; S3: Use adhesive sprayed onto the valve body to fill the groove. After the adhesive cures, it bonds the polarizer and TFT glass into a whole. Only the polarizer can be seen from the front of the product, making the LCD panel look like a four-sided product.

[0012] As a preferred technical solution of this application, in step S3, the adhesive is one of RTV adhesive, UV adhesive, hot melt adhesive, and epoxy adhesive, and the valve body is one of spray valve, needle valve, and knife valve.

[0013] Beneficial Effects: Compared with the prior art, the present invention provides a dispensing device and method for improving the surface flatness of a liquid crystal display module, which has the following beneficial effects: This dispensing device and method for improving the surface flatness of a liquid crystal display module forms a U-shaped groove between the polarizer and the TFT glass, and then fills this groove with glue through the dispensing process. This not only enables the polarizer and the TFT glass to form an effective bond, but also provides support and light-shielding effects, so that only the polarizer is visible from the front of the product, thus improving the flatness and aesthetics of the product surface. The entire dispensing device for improving the surface flatness of a liquid crystal display module has a simple structure, is easy to operate, and has better performance than traditional methods. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a dispensing device and dispensing method for improving the surface flatness of a liquid crystal display module according to the present invention.

[0015] Figure 2 This is a schematic diagram of the lifting clamping plate in the dispensing equipment and dispensing method for improving the surface flatness of a liquid crystal display module according to the present invention.

[0016] Figure 3 This is a schematic diagram of the dispensing device in the dispensing equipment and dispensing method for improving the surface flatness of a liquid crystal display module according to the present invention.

[0017] Figure 4 This is a schematic diagram of the adhesive cartridge in the dispensing equipment and dispensing method for improving the surface flatness of a liquid crystal display module according to the present invention.

[0018] Figure 5 This is a magnified structural diagram of point A in the dispensing equipment and dispensing method for improving the surface flatness of a liquid crystal display module according to the present invention.

[0019] Figure 6 This is a schematic diagram of the adhesive coating tank in the dispensing equipment and dispensing method for improving the surface flatness of a liquid crystal display module according to the present invention.

[0020] In the diagram: 1. Spray painting machine base; 2. Lifting rod; 3. Lifting mechanism; 4. Protective pad; 5. Clamping base; 6. Support plate; 7. Top seat; 8. Lifting motor; 9. Lifter; 10. Lifting clamping plate; 11. Positioning plate; 12. Telescopic rod; 13. Cylinder; 14. Cylinder seat; 15. Lifting plate; 16. Rotary motor; 17. Glue cartridge; 18. Slide rail; 19. Dispensing assembly; 20. Dispensing frame; 21. Rotating assembly; 22. Spray nozzle; 23. Dispenser; 24. Positioning frame; 25. Spray valve; 26. Polarizing film; 27. CF glass; 28. Glue coating tank; 29. ​​TFT glass. Detailed Implementation

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. However, those skilled in the art will understand that the embodiments described below are some embodiments of the present invention, but not all embodiments, and are only used to illustrate the present invention, and should not be regarded as limiting the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall be followed. Where the manufacturers of reagents or instruments are not specified, they are all conventional products that can be purchased commercially.

[0022] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] like Figure 1-6 As shown, a dispensing device for improving the surface flatness of a liquid crystal display module includes a spraying machine base 1, a clamping base 5, and a polarizing film 26 and a TFT glass 29 to be dispensed. Lifting machines 3 are positioned at the four corners of the upper end of the spraying machine base 1. Lifting rods 2 are installed at the upper end of the lifting machines 3. A lifting plate 15 is positioned at the top of the lifting rods 2. A slide rail 18 is positioned at the middle of the upper end of the lifting plate 15. A rotary motor 16 is movably mounted on the slide rail 18. A dispensing frame 20 is mounted on the rotary motor 16. A dispensing assembly 19 and a glue cylinder 17 are installed on the outside of the dispensing frame 20. A dispensing device 23 is provided at the front end of the product. A CF glass 27 is positioned between the polarizer 26 and the TFT glass 29, and a coating groove 28 is formed between the polarizer 26, the CF glass 27 and the TFT glass 29. The dispensing device 23 sprays glue into the coating groove 28, forming a U-shaped groove between the polarizer and the TFT glass. Then, glue is used to fill this groove through the dispensing process. This not only enables the polarizer and the TFT glass to form an effective bond, but also provides support and light shielding. This ensures that only the polarizer is visible from the front of the product, improving the flatness and aesthetics of the product surface.

[0025] Furthermore, a support plate 6 is positioned at the upper end of the clamping base 5, a top seat 7 is positioned at the top of the support plate 6, a lifting motor 8 is positioned at the upper end of the top seat 7, a lifter 9 is provided at the bottom of the lifting motor 8, a lifting clamping plate 10 is positioned at the bottom of the lifter 9, a positioning plate 11 is installed at the front end of the support plate 6 near the bottom, and a protective pad 4 is positioned on the upper surface of the positioning plate 11.

[0026] Furthermore, a rotating assembly 21 is provided between the dispensing frame 20 and the rotary motor 16, a spray nozzle 22 is provided at the front end of the dispensing device 23, a spray valve 25 is provided at the rear end of the dispensing device 23, a positioning frame 24 is positioned between the dispensing device 23 and the dispensing frame 20, a cylinder seat 14 is positioned on the upper side of the lifting plate 15, a cylinder 13 is installed inside the cylinder seat 14, a telescopic rod 12 is provided at the end of the cylinder 13, and the telescopic rod 12 is connected to the rotary motor 16.

[0027] Furthermore, the lifting platform 3 drives the lifting rod 2 to rise and fall, and drives the lifting plate 15 to adjust up and down. The rotary motor 16 moves horizontally on the slide rail 18, and the dispensing assembly 19 sprays the glue inside the glue cylinder 17 through the dispensing device 23.

[0028] Furthermore, the support plate 6 is welded and fixed to the top seat 7, the lifting motor 8 drives the lifting device 9 and drives the lifting clamping plate 10 to move up and down, the lifting clamping plate 10 is clamped and positioned with the positioning plate 11, and is sealed and protected by the protective pad 4.

[0029] Furthermore, the rotary motor 16 drives the rotary assembly 21 and causes the dispensing frame 20 to rotate and adjust. The dispensing device 23 is fixed to the dispensing frame 20 by the positioning frame 24, and the dispensing device 23 is sprayed by the spraying valve 25.

[0030] A dispensing method for improving the surface flatness of a liquid crystal display module includes the following steps: S1: First, apply a strip of UV adhesive to both ends of the TFT glass. After curing with a UV lamp, it can not only bond the TFT glass to the polarizer, but also form a barrier at both ends of the TFT glass to block subsequent glue filling. S2: After the damming colloid cures, a U-shaped groove is formed between the damming colloid, the polarizer, and the TFT glass; S3: Use adhesive sprayed onto the valve body to fill the groove. After the adhesive cures, it bonds the polarizer and TFT glass into a whole. Only the polarizer can be seen from the front of the product, making the LCD panel look like a four-sided product.

[0031] Furthermore, in step S3, the adhesive used is one of RTV adhesive, UV adhesive, hot melt adhesive, or epoxy adhesive, and the valve body is one of a spray valve, needle valve, or knife valve.

[0032] Example: Step 1: First, apply a strip of UV adhesive to both ends of the TFT glass. After curing with a UV lamp, it can not only bond the TFT glass to the polarizer, but also form a barrier at both ends of the TFT glass to prevent subsequent glue application.

[0033] The UV adhesive used in this step has characteristics such as high viscosity, high thixotropy, and a high curing depth. The high viscosity and high thixotropy properties facilitate the accumulation of the adhesive to a certain height during application, forming a better damming effect.

[0034] Step Two: After the damming adhesive cures, a U-shaped groove is formed between the damming adhesive, the polarizer, and the TFT glass. Any type of adhesive can be used, including RTV adhesive, UV adhesive, hot melt adhesive, and epoxy adhesive. A valve body of one of the following types—spray valve, needle valve, or knife valve—is used to fill this groove. After the adhesive cures, it bonds the polarizer and TFT glass into a single unit. From the front, only the polarizer is visible, giving the LCD panel a four-sided appearance.

[0035] The adhesive used in this step, after curing under appropriate conditions, integrates the polarizer, colloid, and TFT glass into a single unit. The adhesive is black in color and exhibits excellent light-blocking properties after curing; its low curing shrinkage rate prevents deformation of the polarizer after curing, maintaining a smooth surface.

[0036] Working Principle: This invention includes a spraying machine base 1, a lifting rod 2, a lifting mechanism 3, a protective pad 4, a clamping base 5, a support plate 6, a top seat 7, a lifting motor 8, a lifting device 9, a lifting clamping plate 10, a positioning plate 11, a telescopic rod 12, a cylinder 13, a cylinder seat 14, a lifting plate 15, a rotary motor 16, a glue cylinder 17, a slide rail 18, a dispensing assembly 19, a dispensing frame 20, a rotating assembly 21, a glue spray head 22, a dispensing device 23, a positioning frame 24, a glue spray valve 25, a polarizing film 26, a CF glass 27, a glue coating tank 28, and a TFT glass 29. A U-shaped groove is formed between the polarizing film and the TFT glass. Glue is then used to fill this groove through a dispensing process. This effectively bonds the polarizing film and the TFT glass, while also providing support and light-shielding effects, ensuring that only the polarizing film is visible from the front of the product, thus improving the flatness and aesthetics of the product surface.

[0037] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A dispensing device for improving the surface flatness of a liquid crystal display module, comprising a spraying machine base (1), a clamping base (5), and a polarizer (26) and TFT glass (29) to be dispensed, characterized in that: The upper end of the spraying machine base (1) is positioned with a lifting machine (3), the upper end of the lifting machine (3) is provided with a lifting rod (2), the top of the lifting rod (2) is positioned with a lifting plate (15), the upper end of the lifting plate (15) is positioned with a sliding rail (18), the sliding rail (18) is movably provided with a rotating motor (16), the rotating motor (16) is provided with a glue dispensing frame (20), the glue dispensing frame (20) is installed with a glue dispensing assembly (19) and a glue cylinder (17) outside, the front end of the glue dispensing assembly (19) is provided with a glue dispenser (23), the polarizer (26) and the TFT glass (29) are positioned with the CF glass (27), and the polarizer (26), the CF glass (27) and the TFT glass (29) form a glue coating groove (28) therebetween, and the glue dispenser (23) sprays glue to the glue coating groove (28).

2. The point gluing device for improving the surface flatness of a liquid crystal display module according to claim 1, wherein: The upper end of the clamping base (5) is positioned with a support plate (6), the top of the support plate (6) is positioned with a top seat (7), the upper end of the top seat (7) is positioned and installed with a lifting motor (8), the bottom of the lifting motor (8) is provided with a lifter (9), the bottom of the lifter (9) is positioned with a lifting clamping plate (10), the front end of the support plate (6) is installed with a positioning plate (11) near the bottom position, and the upper end surface of the positioning plate (11) is positioned with a protective pad (4).

3. The point gluing device for improving the surface flatness of a liquid crystal display module according to claim 1, wherein: The glue dispensing frame (20) and the rotating motor (16) are provided with a rotating assembly (21), the front end of the glue dispenser (23) is provided with a glue spraying head (22), the rear end of the glue dispenser (23) is provided with a glue spraying valve (25), the glue dispenser (23) and the glue dispensing frame (20) are positioned with a positioning frame (24), the upper end side of the lifting plate (15) is positioned with a cylinder seat (14), the inner side of the cylinder seat (14) is installed with a gas cylinder (13), the end of the gas cylinder (13) is provided with a telescopic rod (12), and the telescopic rod (12) is connected with the rotating motor (16).

4. The point gluing device for improving the surface flatness of a liquid crystal display module according to claim 1, wherein: The lifting machine (3) drives the lifting rod (2) to lift and drive the lifting plate (15) to adjust up and down, the rotating motor (16) translates on the sliding rail (18), and the glue dispensing assembly (19) sprays the glue in the glue cylinder (17) out through the glue dispenser (23).

5. The point gluing device for improving the surface flatness of a liquid crystal display module according to claim 2, wherein: The support plate (6) and the top seat (7) are welded and fixed, the lifting motor (8) drives the lifter (9) and drives the lifting clamping plate (10) to lift and move, the lifting clamping plate (10) and the positioning plate (11) are clamped and positioned, and are sealed and protected by the protective pad (4).

6. The point gluing device for improving the surface flatness of a liquid crystal display module according to claim 3, wherein: The rotating motor (16) drives the rotating assembly (21) and drives the glue dispensing frame (20) to rotate and adjust, the glue dispenser (23) and the glue dispensing frame (20) are fixed through the positioning frame (24), and the glue dispenser (23) is controlled by the glue spraying valve (25) for spraying.

7. A dispensing method for improving the surface flatness of a liquid crystal display module, characterized in that: Specifically includes the following operation steps: S1: first use UV glue to coat a strip of glue on both ends of the TFT glass, and use ultraviolet lamp to cure, which can play a bonding role between the TFT glass and the polarizing sheet, and also form a dam at both ends of the TFT glass to block the subsequent glue pouring; S2: after the dam glue is cured, a U-shaped groove is formed between the dam glue, the polarizing sheet and the TFT glass; S3: use a valve body to spray glue to fill the groove, and after the glue is cured, the polarizing sheet and the TFT glass are bonded into a whole, and the product can only see the polarizing sheet from the front, so that the liquid crystal display panel forms the appearance of a four-sided product.

8. The method according to claim 7, wherein the method is used for improving the surface flatness of a liquid crystal display module. In the S3 step, the glue is one of RTV glue, UV glue, hot melt glue and epoxy glue, and the valve body is one of a jet valve, a needle valve and a knife valve.

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