A transparent display screen and its coating method

Abstract

This invention provides a transparent display screen and its coating method, relating to the field of display screen technology. The screen includes a bottom transparent substrate and a top optical glass. An adhesive layer is coated on the bottom transparent substrate, a transparent LED substrate is disposed on the adhesive layer, and a plurality of LED beads are disposed on the transparent LED substrate. A further transparent adhesive layer is mounted on the transparent LED substrate, and a top optical glass is mounted on the transparent adhesive layer. A high-temperature protective film is disposed on the top optical glass. Existing displays typically employ a glass-vacuum sputtering-electroplating-etching-SMT soldering LED-COB packaging process. However, uneven heating of the glass during vacuum sputtering and electroplating can easily lead to breakage and material loss. Furthermore, existing technologies can only perform vacuum sputtering and electroplating operations one piece at a time, resulting in low efficiency. The display screen manufactured using the process of this invention has a fast production speed, and the adhesive bonding method effectively avoids material loss caused by vacuum sputtering and electroplating, significantly improving practicality.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a transparent display screen and its coating method. Background Technology

[0002] A display screen is a screen used to display various information such as text, graphics, images, animations, market data, videos, and recorded signals. A transparent display screen, which functions as a display screen when in use and is transparent glass when not in use, has significant potential in the commercial sector, especially in retail settings. Even in the home television and emerging technology-driven home improvement markets, transparent displays may become a revolutionary new technology.

[0003] Traditional transparent display manufacturing processes involve glass-vacuum sputtering-electroplating-etching-SMT soldering and LED-COB packaging. However, uneven heating during vacuum sputtering and electroplating can easily cause glass breakage, resulting in the loss of raw materials. Furthermore, traditional processes can only complete vacuum sputtering, electroplating, and other operations one piece at a time, which is inefficient. Summary of the Invention

[0004] The present invention provides a transparent display screen and a coating method thereof to solve at least one of the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention discloses a transparent display screen, comprising a bottom transparent substrate and a top optical glass. An adhesive layer is coated on the bottom transparent substrate, a transparent LED substrate is disposed on the adhesive layer, a plurality of LED beads are disposed on the transparent LED substrate, a transparent adhesive layer is also installed on the transparent LED substrate, a top optical glass is installed on the transparent adhesive layer, and a high-temperature protective film is disposed on the top optical glass.

[0006] Preferably, the adhesive layer includes bisphenol A resin, high viscosity resin, curing agent, antioxidant, accelerator, ultraviolet light stabilizer and ultraviolet light absorber.

[0007] Preferably, the content of bisphenol A resin is 60-85%, the content of high-viscosity resin is 10-15%, the content of curing agent is 1-5%, the content of antioxidant is 0.5-1%, the content of ultraviolet light absorber is 0.1-0.5%, the content of accelerator is 0.5-1%, and the content of ultraviolet light stabilizer is 0.5-1%.

[0008] A coating method for a transparent display screen includes the following steps:

[0009] S1: Add bisphenol A resin, high viscosity resin, curing agent, antioxidant, accelerator, UV stabilizer and UV absorber into a mixer and mix them. Then, convey the mixed adhesive to a coating machine.

[0010] S2: Obtain the bottom transparent substrate and transport it into the coating machine;

[0011] S3: The coating machine sequentially applies adhesive, scrapes adhesive, performs initial drying, roll pressing, and final drying on the bottom transparent substrate, and then outputs the coating from the coating machine to complete the coating process.

[0012] Preferably, the coating machine includes a coating shell with openings at both ends. A first rotating rod is rotatably connected to the front of the coating shell, and a first pulley is fixedly mounted on the first rotating rod. The output end of a drive motor is fixedly connected to the front of the first rotating rod, and the drive motor is equipped with several mounting rods. The drive motor is mounted on the front of the coating shell via the mounting rods. A second rotating rod and a third rotating rod are also rotatably connected to the front of the coating shell. A second pulley is fixedly mounted on the second rotating rod, and a third pulley is mounted on the third rotating rod. A first belt is provided on the outer periphery of the first pulley, the second pulley, and the third pulley. The first rotating rod, the second rotating rod, and the third rotating rod all extend rearward into the coating shell and are rotatably connected to the extended position of the coating shell. The first rotating rod, the second rotating rod, and the third rotating rod are rotatably connected to the rear sidewall of the coating shell. A first active roller, a second active roller, and a third active roller are respectively fixedly mounted on the first rotating rod, the second rotating rod, and the third rotating rod. A glue-applying roller is provided inside the coating shell.

[0013] Preferably, the front and rear sides of the coating roller are rotatably connected to the inner wall of the coating shell. The upper surface of the coating shell is provided with a first through hole, and a glue storage box is installed in the first through hole. The glue storage box is provided with a partition, and the partition is provided with several second through holes. A pipe is installed in the second through hole. The lower end of the pipe is closed, and a brush is provided in the pipe. The brush extends downward out of the pipe, and the brush is fixedly connected to the extension position of the pipe. The lower end of the brush abuts against the coating roller. The glue storage box is provided with a fourth rotating rod, which extends forward out of the coating shell and is rotatably connected to the extension position of the coating shell. Several stirring rods are also provided on the fourth rotating rod. A fourth pulley is fixedly provided at the front end of the fourth rotating rod, and a fifth pulley is fixedly provided on the first rotating rod. A second belt is provided around the fourth pulley and the fifth pulley. A baffle is slidably provided on the partition, which extends forward out of the coating shell and is slidably connected to the extension position of the coating shell. Several third through holes are also provided on the baffle.

[0014] Preferably, a first electric telescopic rod is fixedly provided on the upper inner wall of the coating shell, and a U-shaped scraper is fixedly connected to the lower output end of the first electric telescopic rod. A second active roller is provided on the lower side of the U-shaped scraper.

[0015] Preferably, the upper surface of the coating shell is further provided with a fourth through hole, and a bellows is provided in the fourth through hole. A vertical rod is fixed on the bellows, and a rotating shaft passes through the vertical rod. A sixth pulley is fixed on the front side of the rotating shaft, and a first bevel gear is fixed on the rear side of the rotating shaft. The upper surface of the bellows is provided with a fifth through hole, and a rotating rod is provided in the fifth through hole. A second bevel gear is provided on the rotating rod, and the second bevel gear meshes with the first bevel gear. A blade is fixed at the lower end of the rotating rod. A first filter screen and an adsorption block are also provided in the bellows. The first filter screen and the adsorption block extend to the right out of the bellows, and the first filter screen and the adsorption block are slidably connected to the extension position of the bellows. A fixing block is installed on the right end of the first filter screen and the adsorption block, and the fixing block is detachably connected to the bellows. A seventh pulley is also provided on the fourth rotating rod, and a third belt is provided around the seventh pulley and the sixth pulley.

[0016] Preferably, a second electric telescopic rod is fixedly installed on the upper inner wall of the coating shell, and a U-shaped clamping plate is fixedly connected to the lower output end of the second electric telescopic rod. A first pressure roller is rotatably connected to the vertical section of the U-shaped clamping plate on the side that is close to each other. A second pressure roller is installed at the tangent position on the left and right sides of the pressure roller. The front and rear sides of the second pressure roller are rotatably connected to the coating shell. A hot air box is also fixedly installed on the upper and lower inner walls of the coating shell, and several drying heads are installed on the side of the hot air box that is close to each other.

[0017] Preferably, symmetrically installed slope blocks are mounted on the lower inner wall of the coating shell. The slope block on the left is located below the coating roller, and the slope block on the right is located below the air box. A through groove is provided on the lower side wall of the coating shell, and a rotating plate is installed in the through groove. The left side of the rotating plate is hinged to the lower side wall of the coating shell. A torsion spring is provided at the hinge position between the rotating plate and the coating shell. A receiving box is provided below the through groove, and a pipeline is provided through the receiving box. A pump body is fixedly installed at the upper end of the glue storage box. A second filter screen is also provided in the pipeline. The other end of the pipeline is connected to the pump body. An extension rod is fixedly installed on the front side of the rotating plate. A drive rod is fixedly connected to the upper end of the extension rod. A rotating disk is fixedly connected to the front end of the second rotating rod. A protruding rod is fixedly installed on the rotating disk. A point control button is provided on the protruding rod. The point control button is electrically connected to the pump body, and the protruding rod cooperates with the drive rod.

[0018] Compared with the prior art, the present invention provides a transparent display screen and its coating method, which has the following beneficial effects:

[0019] The display screen manufactured using the process of this invention has high production efficiency, enabling mass production or roll-to-roll production. Furthermore, the use of adhesive bonding effectively avoids the loss of raw materials caused by vacuum sputtering and electroplating, thus significantly improving practicality. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the coating machine of the present invention. Figure 1 ;

[0023] Figure 3 This is a schematic diagram of the coating machine of the present invention. Figure 2 ;

[0024] Figure 4 This is a diagram showing the internal structure of the bellows of the present invention;

[0025] Figure 5 For the present invention Figure 4 Side view;

[0026] Figure 6 This is a diagram showing the internal structure of the glue storage box of the present invention;

[0027] Figure 7 This is a schematic diagram illustrating the cooperation between the partition and the baffle of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the U-shaped scraper of the present invention.

[0029] In the diagram: 1. Top optical glass; 2. Transparent adhesive layer; 3. Transparent LED substrate; 4. LED beads; 5. Adhesive layer; 6. Bottom transparent substrate; 7. Coated shell; 8. First belt; 9. Third pulley; 10. Drive rod; 11. Extension rod; 12. Pipeline; 13. Receiving box; 14. Second pulley; 15. Drive motor; 16. First pulley; 17. Second belt; 18. Seventh pulley; 19. Fourth pulley; 20. Adhesive storage box; 21. Pump body; 22. Third belt; 23. Rotating disc; 24. Protruding rod; 25. Baffle; 26. First electric telescopic rod; 27. Bellows; 28. 29. Electric telescopic rod; 30. U-shaped clamping plate; 31. Drying head; 32. Third active roller; 33. Hot air box; 34. Second pressure roller; 35. First pressure roller; 36. Sloping block; 37. Rotating plate; 38. Second active roller; 39. U-shaped scraper; 40. First active roller; 41. Glue coating roller; 42. Rotating rod; 43. First bevel gear; 44. Vertical rod; 45. Sixth pulley; 46. Second bevel gear; 47. Blade; 48. First filter screen; 49. Adsorption block; 50. Fixing block; 51. Pipe; 52. Brush bristles; 53. Third through hole; 54. Partition plate; 55. Second through hole; 56. Stirring rod. Detailed Implementation

[0030] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0031] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0032] Example 1

[0033] Embodiments of the present invention provide a transparent display screen, such as Figure 1 As shown, it includes a bottom transparent substrate 6 and a top optical glass 1. The bottom transparent substrate 6 is coated with an adhesive layer 5. A transparent LED substrate 3 is disposed on the adhesive layer 5. A number of LED beads 4 are disposed on the transparent LED substrate 3. A transparent adhesive layer 2 is also installed on the transparent LED substrate 3. The top optical glass 1 is installed on the transparent adhesive layer 2. A high-temperature protective film is disposed on the top optical glass 1.

[0034] Preferably, the adhesive layer 5 includes bisphenol A resin, high viscosity resin, curing agent, antioxidant, accelerator, ultraviolet light stabilizer and ultraviolet light absorber.

[0035] Preferably, the content of bisphenol A resin is 60-85%, the content of high-viscosity resin is 10-15%, the content of curing agent is 1-5%, the content of antioxidant is 0.5-1%, the content of ultraviolet light absorber is 0.1-0.5%, the content of accelerator is 0.5-1%, and the content of ultraviolet light stabilizer is 0.5-1%.

[0036] The working principle and beneficial effects of the above technical solution are as follows: Bisphenol A resin, high viscosity resin, curing agent, antioxidant, accelerator, ultraviolet light stabilizer and ultraviolet light absorber are mixed in proportion to form an adhesive solution. Then, a bottom transparent substrate 6 is obtained. The adhesive solution and the bottom transparent substrate 6 are then fed into a coating machine to complete the coating. After that, a transparent LED substrate 3, a transparent adhesive layer 2 and a top optical glass 1 are obtained and sequentially installed onto the bottom transparent substrate 6. The display screen produced by the above method has high production efficiency and can realize mass production or roll-to-roll production. Moreover, the use of adhesive bonding can effectively avoid glass breakage or scratches caused by vacuum sputtering and electroplating, effectively improving practicality and economy.

[0037] Example 2

[0038] A coating method for a transparent display screen includes the following steps:

[0039] S1: Add bisphenol A resin, high viscosity resin, curing agent, antioxidant, accelerator, UV stabilizer and UV absorber into a mixer and mix them. Then, convey the mixed adhesive to a coating machine.

[0040] S2: Obtain the bottom transparent substrate 6 and transport the bottom transparent substrate 6 into the coating machine;

[0041] S3: The coating machine sequentially applies adhesive, scrapes adhesive, performs initial drying, roll pressing, and final drying on the bottom transparent substrate 6, and then outputs it from the coating machine to complete the coating process.

[0042] The working principle and beneficial effects of the above technical solution are as follows: First, bisphenol A resin, high-viscosity resin, curing agent, antioxidant, accelerator, UV stabilizer, and UV absorber are added to a mixer and mixed. The mixed adhesive is then conveyed to a coating machine. Second, a transparent substrate 6 is obtained and conveyed into the coating machine. Third, the coating machine sequentially applies adhesive, applies adhesive, performs initial drying, roll pressing, and final drying on the transparent substrate 6, and then outputs the substrate, completing the coating process. By applying adhesive, applying adhesive, performing initial drying, roll pressing, and final drying on the transparent substrate 6 using a coating machine, the coating thickness can be effectively controlled. This process is highly automated, effectively reducing manual operation and improving intelligence and convenience.

[0043] Example 3

[0044] Based on the above embodiment 2, as Figure 2-3 As shown in Figures 6-7, the coating machine includes a coating shell 7 with openings at both ends. A first rotating rod is rotatably connected to the front of the coating shell 7, and a first pulley 16 is fixedly mounted on the first rotating rod. The output end of a drive motor 15 is fixedly connected to the front of the first rotating rod, and the drive motor 15 is equipped with several mounting rods. The drive motor 15 is mounted on the front of the coating shell 7 via the mounting rods. A second rotating rod and a third rotating rod are also rotatably connected to the front of the coating shell 7. A second pulley 14 is fixedly mounted on the second rotating rod, and a third pulley 9 is mounted on the third rotating rod. A first belt 8 is provided on the outer periphery of pulley 16, second pulley 14 and third pulley 9. The first rotating rod, second rotating rod and third rotating rod all extend rearward into the coating shell 7, and the first rotating rod, second rotating rod and third rotating rod are rotatably connected to the extension position of the coating shell 7. The first rotating rod, second rotating rod and third rotating rod are rotatably connected to the rear side wall of the coating shell 7. A first active roller 39, a second active roller 37 and a third active roller 31 are respectively fixed on the first rotating rod, second rotating rod and third rotating rod. A glue-applying roller 40 is provided inside the coating shell 7.

[0045] Preferably, the front and rear sides of the coating roller 40 are rotatably connected to the inner wall of the coating shell 7. The upper surface of the coating shell 7 is provided with a first through hole, and a glue storage box 20 is installed in the first through hole. The glue storage box 20 is provided with a partition 53, and the partition 53 is provided with a plurality of second through holes 54. A pipe 50 is installed in the second through hole 54. The lower end of the pipe 50 is closed, and a brush bristle 51 is provided in the pipe 50. The brush bristle 51 extends downward out of the pipe 50, and the extension position of the pipe 50 is fixedly connected to the brush bristle 51. The lower end of the brush bristle 51 abuts against the coating roller 40. The glue storage box 20 is provided with a first through hole. The fourth rotating rod extends forward out of the coating shell 7 and is rotatably connected to the extended position of the coating shell 7. Several stirring rods 55 are also provided on the fourth rotating rod. A fourth pulley 19 is fixedly provided at the front end of the fourth rotating rod. A fifth pulley is also fixedly provided on the first rotating rod. A second belt 17 is provided around the fourth pulley 19 and the fifth pulley. A baffle 25 is slidably provided on the partition 53. The baffle 25 extends forward out of the coating shell 7 and is slidably connected to the extended position of the coating shell 7. Several third through holes 52 are also provided on the baffle 25.

[0046] The working principle and beneficial effects of the above technical solution are as follows: The mixed adhesive is input into the adhesive storage tank 20, and then the bottom transparent substrate 6 enters the coating shell 7 through the left opening of the coating shell 7. The drive motor 15 is started, and the first rotating rod begins to rotate. The first rotating rod drives the first pulley 16 to rotate. The first pulley 16 drives the second pulley 14 and the third pulley 9 to rotate through the first belt 8. The second pulley 14 drives the second rotating rod to rotate, and the third pulley 9 drives the third rotating rod to rotate. The first rotating rod drives the first drive roller 39 to rotate, and the second rotating rod drives the first drive roller 39 to rotate. The second active roller 37 rotates, and the third rotating rod drives the third active roller 31 to rotate, transporting the bottom transparent substrate 6. When the first rotating rod starts to rotate, the first rotating rod will drive the fifth pulley to rotate. The fifth pulley drives the fourth pulley 19 to rotate through the second belt 17. The fourth pulley 19 drives the fourth rotating rod to rotate. The fourth rotating rod drives the stirring rod 55 to continue stirring the adhesive liquid input into the adhesive storage tank 20. During the transportation of the bottom transparent substrate 6, the adhesive liquid is always stirred, so that the uniform adhesive liquid can be coated on the bottom transparent substrate 6.

[0047] When the bottom transparent substrate 6 leaves the right opening of the coating shell 7, the baffle 25 is pushed backward (in the initial position, the baffle 25 is at the front limit position), so that the third through hole 52 matches the second through hole 54. The adhesive enters into several pipes 50, and then the adhesive soaks the brush bristles 51. The brush bristles 51 transfer the adhesive to the coating roller 40. During the movement of the bottom transparent substrate 6, the coating roller 40 coats the bottom transparent substrate 6. By setting the match between the third through hole 52 and the second through hole 54, the falling speed of the adhesive can be effectively controlled, preventing excessive adhesive from falling and effectively improving practicality.

[0048] Example 4

[0049] Based on the above embodiments 2-3, such as Figure 2-5 As shown in Figures 8 and 9, a first electric telescopic rod 26 is fixedly provided on the upper inner wall of the coating shell 7. A U-shaped scraper 38 is fixedly connected to the lower output end of the first electric telescopic rod 26. A second active roller 37 is provided on the lower side of the U-shaped scraper 38.

[0050] Preferably, the upper surface of the coating shell 7 is further provided with a fourth through hole, and a bellows 27 is provided in the fourth through hole. A vertical rod 43 is fixedly provided on the bellows 27, and a rotating shaft is provided through the vertical rod 43. A sixth pulley 44 is fixedly provided on the front side of the rotating shaft, and a first bevel gear 42 is fixedly provided on the rear side of the rotating shaft. The upper surface of the bellows 27 is provided with a fifth through hole, and a rotating rod 41 is provided in the fifth through hole. A second bevel gear 45 is provided on the rotating rod 41, and the second bevel gear 45 meshes with the first bevel gear 42. The lower end of the rotating rod 41 A blade 46 is fixedly provided. A first filter screen 47 and an adsorption block 48 are also provided inside the air box 27. The first filter screen 47 and the adsorption block 48 extend to the right out of the air box 27 and are slidably connected to the extension position of the air box 27. A fixing block 49 is installed at the right end of the first filter screen 47 and the adsorption block 48. The fixing block 49 is detachably connected to the air box 27. A seventh pulley 18 is also provided on the fourth rotating rod. A third belt 22 is provided around the seventh pulley 18 and the sixth pulley 44.

[0051] Preferably, a second electric telescopic rod 28 is fixedly installed on the upper inner wall of the coating shell 7. A U-shaped clamping plate 29 is fixedly connected to the lower output end of the second electric telescopic rod 28. A first pressure roller 34 is rotatably connected to the vertical section of the U-shaped clamping plate 29 on the side that is close to each other. A second pressure roller 33 is provided at the tangent position on the left and right sides of the pressure roller 34. The front and rear sides of the second pressure roller 33 are rotatably connected to the coating shell 7. A hot air box 32 is also fixedly installed on the upper and lower inner walls of the coating shell 7. Several drying heads 30 are installed on the side of the hot air box 32 that is close to each other.

[0052] The working principle and beneficial effects of the above technical solution are as follows: The first electric telescopic rod 26 is activated, and the distance between the U-shaped scraper 38 and the second active roller 37 is adjusted. After proper adjustment, during the movement of the bottom transparent substrate 6, the U-shaped scraper 38 will smooth the adhesive on the bottom transparent substrate 6. When the fourth rotating rod rotates, the seventh pulley 18 rotates, and the seventh pulley 18 drives the sixth pulley 44 to rotate via the third belt 22. The sixth pulley 44 drives the first bevel gear 42 to rotate, the first bevel gear 42 drives the second bevel gear 45 to rotate, the second bevel gear 45 drives the rotating rod 41 to rotate, and the rotating rod 41 drives the blades 46 to rotate and discharge air. The air is filtered by the first filter screen 47 and adsorbed by the adsorption block 48 (after the first filter screen 47 and adsorption block 48 have been used for a period of time, the fixing block 49 can be pulled to the right to facilitate air removal). The first filter screen 47 and the adsorption block 48 can be easily removed for cleaning or replacement, making it more convenient. The air blows on the bottom transparent substrate 6 after the glue is scraped, so that the glue on the bottom transparent substrate 6 is pre-dried, which facilitates the subsequent rolling process. The second electric telescopic rod 28 is activated to adjust the height of the U-shaped clamping plate 29, thereby controlling the distance between the first pressure roller 34 and the second pressure roller 33. The second pressure roller 33 on the left and the first pressure roller 34 complete one rolling, and the second pressure roller 33 on the right and the first pressure roller 34 complete a second rolling, making the glue layer 5 on the bottom transparent substrate 6 more compact. The structure is simple and easy to use. The conveying of the bottom transparent substrate 6, the mixing of the glue, and the rotation of the blade 46 to discharge air can be completed by only one drive motor 15, which is more intelligent and convenient.

[0053] Example 5

[0054] Based on the above embodiments 2-4, such as Figure 2-3 As shown, symmetrically mounted sloped blocks 35 are installed on the lower inner wall of the coating shell 7. The left sloped block 35 is located below the coating roller 40, and the right sloped block 35 is located below the air box 27. A through groove is provided on the lower side wall of the coating shell 7, and a rotating plate 36 is installed in the through groove. The left side of the rotating plate 36 is hinged to the lower side wall of the coating shell 7. A torsion spring is provided at the hinge position between the rotating plate 36 and the coating shell 7. A receiving box 13 is provided below the through groove, and a pipe 12 is provided through the receiving box 13. A glue storage box is also provided. A pump body 21 is fixedly installed at the upper end of the 20. A second filter screen is also installed inside the pipeline 12. The other end of the pipeline 12 is connected to the pump body 21. An extension rod 11 is fixedly installed on the front side of the rotating plate 36. The upper end of the extension rod 11 is fixedly connected to the drive rod 10. A rotating disk 23 is fixedly connected to the front end of the second rotating rod. A protruding rod 24 is fixedly installed on the rotating disk 23. A point control button is provided on the protruding rod 24. The point control button is electrically connected to the pump body 21, and the protruding rod 24 cooperates with the drive rod 10.

[0055] The working principle and beneficial effects of the above technical solution are as follows: When the coating machine is coating, since the adhesive is liquid, a small amount of adhesive may fall onto the slope block 35 or the rotating plate 36 during the coating roller 40, the U-shaped scraper 38, and the pre-drying process. When the second rotating rod rotates, the rotating disk 23 also rotates, which drives the protruding rod 24 to rotate. When the protruding rod 24 rotates, it will contact the drive rod 10. The drive rod 10 drives the extension rod 11 to move, and the extension rod 11 drives the rotating plate 36 to rotate around the hinge point between the rotating plate 36 and the coating shell 7, so that the adhesive in the coating shell 7 falls into the receiving box 13. At the same time, when the protruding rod 24 contacts the drive rod 10, it will cause the pump body 21 to start. Body 21 draws adhesive from the receiving box 13 through pipe 12, and the adhesive enters the storage box 20. At the same time, the second filter screen in pipe 12 filters the adsorbed adhesive. When the protruding rod 24 is not in contact with the drive rod 10, the rotating plate 36 returns to its original position under the action of the torsion spring. By setting the contact between the protruding rod 24 and the drive rod 10, the adhesive in the coating shell 7 can be released intermittently. At the same time, the adhesive in the receiving box 13 can be drawn into the storage box 20 intermittently by pressing the control button, avoiding waste of adhesive. Moreover, the adsorption is carried out when the rotating plate 36 is rotating, so as to remove as much adhesive falling from the coating shell 7 as possible (i.e., the amount of adhesive in the receiving box 13 is small). The above structure is compact, easy to use, and highly intelligent.

[0056] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. If these modifications and variations fall within the scope of the claims of this invention and their equivalents, then this invention is also intended to include these modifications and variations.

Claims

1. A coating method for a transparent display screen, characterized in that, Includes the following steps, S1: Bisphenol A resin, high-viscosity resin, curing agent, antioxidant, accelerator, and ultraviolet... The light stabilizer and ultraviolet absorber are added to the mixer and mixed, and then the mixed adhesive is conveyed to the coating machine; S2: Obtain the bottom transparent substrate (6) and transport the bottom transparent substrate (6) into the coating machine; S3: The coating machine applies adhesive, scrapes adhesive, performs initial drying, roll pressing and final drying on the bottom transparent substrate (6) in sequence, and then outputs it from the coating machine to complete the coating process. The coating machine includes a coating shell (7), which has openings at both ends. A first rotating rod is rotatably connected to the front of the coating shell (7). A first pulley (16) is fixedly mounted on the first rotating rod. The output end of a drive motor (15) is fixedly connected to the front of the first rotating rod. The drive motor (15) is equipped with several mounting rods. The drive motor (15) is mounted on the front of the coating shell (7) via the mounting rods. A second rotating rod and a third rotating rod are also rotatably connected to the front of the coating shell (7). A second pulley (14) is fixedly mounted on the second rotating rod. A third pulley (9) is mounted on the third rotating rod. The first pulley (14) is fixedly mounted on the second rotating rod. 6) The second pulley (14) and the third pulley (9) are provided with a first belt (8) on their outer periphery. The first rotating rod, the second rotating rod and the third rotating rod all extend backward into the coating shell (7). The first rotating rod, the second rotating rod and the third rotating rod are rotatably connected to the extension position of the coating shell (7). The first rotating rod, the second rotating rod and the third rotating rod are rotatably connected to the rear side wall of the coating shell (7). The first rotating rod, the second rotating rod and the third rotating rod are respectively fixed with a first active roller (39), a second active roller (37) and a third active roller (31). A glue-applying roller (40) is provided inside the coating shell (7). The front and rear sides of the coating roller (40) are rotatably connected to the inner wall of the coating shell (7). The upper surface of the coating shell (7) is provided with a first through hole, and a glue storage box (20) is installed in the first through hole. A symmetrical ramp block (35) is installed on the lower inner wall of the coating shell (7). The ramp block (35) on the left is located below the coating roller (40), and the ramp block (35) on the right is located below the air box (27). A through groove is provided on the lower side wall of the coating shell (7). A rotating plate (36) is installed in the through groove. The left side of the rotating plate (36) is hinged to the lower side wall of the coating shell (7). A torsion spring is provided at the hinge position between the rotating plate (36) and the coating shell (7). A receiving box (13) is provided on the lower side of the through groove. A pipe (12) is provided through the receiving box (13). A glue storage box (20) is provided. The upper end is fixedly provided with a pump body (21), and the pipe (12) is also provided with a second filter screen. The other end of the pipe (12) is connected to the pump body (21). The front side of the rotating plate (36) is fixedly provided with an extension rod (11). The upper end of the extension rod (11) is fixedly connected to the drive rod (10). The front end of the second rotating rod is fixedly connected to a rotating disk (23). The rotating disk (23) is fixedly provided with a protruding rod (24). The protruding rod (24) is provided with a point control button. The point control button is electrically connected to the pump body (21), and the protruding rod (24) cooperates with the drive rod (10). The transparent display screen includes a bottom transparent substrate (6) and a top optical glass (1). The bottom transparent substrate (6) is coated with an adhesive layer (5). A transparent LED substrate (3) is disposed on the adhesive layer (5). A number of LED beads (4) are disposed on the transparent LED substrate (3). A transparent adhesive layer (2) is also installed on the transparent LED substrate (3). The top optical glass (1) is installed on the transparent adhesive layer (2). A high-temperature protective film is disposed on the top optical glass (1).

2. The coating method for a transparent display screen according to claim 1, characterized in that, The adhesive layer (5) includes bisphenol A resin, high viscosity resin, curing agent, antioxidant, accelerator, ultraviolet light stabilizer and ultraviolet light absorber.

3. The coating method for a transparent display screen according to claim 2, characterized in that, The content of bisphenol A resin is 60-85%, the content of high viscosity resin is 10-15%, the content of curing agent is 1-5%, the content of antioxidant is 0.5-1%, the content of ultraviolet light absorber is 0.1-0.5%, the content of accelerator is 0.5-1%, and the content of ultraviolet light stabilizer is 0.5-1%.

4. The coating method for a transparent display screen according to claim 1, characterized in that, A first electric telescopic rod (26) is fixedly provided on the upper inner wall of the coating shell (7). A U-shaped scraper (38) is fixedly connected to the lower output end of the first electric telescopic rod (26). A second active roller (37) is provided on the lower side of the U-shaped scraper (38).

5. The coating method for a transparent display screen according to claim 4, characterized in that, The upper surface of the coated shell (7) is also provided with a fourth through hole, and a bellows (27) is provided in the fourth through hole. A vertical rod (43) is fixed on the bellows (27), and a rotating shaft is provided through the vertical rod (43). A sixth pulley (44) is fixed on the front side of the rotating shaft, and a first bevel gear (42) is fixed on the rear side of the rotating shaft. The upper surface of the bellows (27) is provided with a fifth through hole, and a rotating rod (41) is provided in the fifth through hole. A second bevel gear (45) is provided on the rotating rod (41), and the second bevel gear (45) meshes with the first bevel gear (42). A blade (46) is fixed at the lower end of the rotating rod (41). The bellows (27) The container is also equipped with a first filter screen (47) and an adsorption block (48). Both the first filter screen (47) and the adsorption block (48) extend to the right out of the air box (27). The first filter screen (47) and the adsorption block (48) are slidably connected to the extension position of the air box (27). A fixing block (49) is installed on the right end of the first filter screen (47) and the adsorption block (48). The fixing block (49) is detachably connected to the air box (27). A fourth rotating rod is provided on the glue storage box (20). A seventh pulley (18) is also provided on the fourth rotating rod. A third belt (22) is provided around the seventh pulley (18) and the sixth pulley (44).

6. The coating method for a transparent display screen according to claim 5, characterized in that, A second electric telescopic rod (28) is fixedly installed on the upper inner wall of the coating shell (7). A U-shaped card plate (29) is fixedly connected to the lower output end of the second electric telescopic rod (28). A first pressure roller (34) is rotatably connected to the vertical section of the U-shaped card plate (29) on the side close to each other. A second pressure roller (33) is provided at the tangent position on the left and right sides of the first pressure roller (34). The front and rear sides of the second pressure roller (33) are rotatably connected to the coating shell (7). A hot air box (32) is fixedly installed on the upper and lower inner walls of the coating shell (7). Several drying heads (30) are installed on the side close to each other of the hot air box (32).

Images