OCA (Optical Clear Adhesive) full-lamination screen assembly capable of preventing edge warping
By designing the frame structure and adjustment components, and combining them with an electrostatic elimination roller, the screen warping problem was solved, achieving high-quality screen bonding and electrostatic protection, and improving the yield and reliability of screen components.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN XINMAI ELECTRONIC TECH CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-04-24
AI Technical Summary
Existing equipment is unable to flexibly adapt to the bonding requirements of screens of different thicknesses, resulting in screen edge warping, which affects bonding quality and yield.
By employing a frame structure and adjustment components, and through the design of hinge rods and screen-applying rollers, combined with an anti-static roller, it achieves stable bonding and anti-static elimination of screens of different thicknesses, preventing warping.
It improves the flatness and yield of screen bonding, prevents damage to the screen and device caused by static electricity, and enhances the reliability of screen components.
Smart Images
Figure CN224161923U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic device screen manufacturing technology, and in particular to an OCA adhesive fully laminated screen assembly that prevents edge warping. Background Technology
[0002] OCA adhesive fully laminated screen assembly is a screen structure that seamlessly bonds a display screen and a touch screen together using OCA optical adhesive. OCA adhesive is a substrate-free, optically transparent special double-sided adhesive, belonging to the category of pressure-sensitive adhesives. It features colorless transparency, light transmittance of over 90%, good bonding strength, and the ability to cure at room temperature or medium temperature with minimal curing shrinkage.
[0003] Traditional screen bonding processes are mainly completed manually or with simple bonding equipment. When using existing equipment for screen bonding, the screen and device to be bonded are first placed on the worktable, a suitable OCA adhesive is selected, and it is applied to the bonding surfaces of the screen or device. Then, a bonding tool (such as a roller) is used to apply pressure from one end of the screen to the other to achieve bonding between the screen and the device.
[0004] Existing equipment struggles to flexibly adapt to the bonding requirements of screens of varying thicknesses. When faced with screens of different thicknesses, it cannot specifically adjust the fixing method of the screen edges during the bonding process, making it difficult to ensure bonding effectiveness for screens of different thicknesses. During bonding, the screen edges lack stable support and guidance, and as the bonding tool moves, uneven force can easily cause edge warping, significantly affecting the flatness of the screen bonding, reducing the bonding quality of the screen assembly, and increasing the product defect rate. Therefore, this paper proposes a fully laminated screen assembly using OCA adhesive to prevent edge warping and solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides an OCA adhesive fully laminated screen assembly that prevents edge warping, aiming to improve the problems of easy edge warping and poor adhesion in existing screens.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: an OCA adhesive fully laminated screen assembly for preventing edge warping, comprising a frame, a vertical plate fixedly connected to the top of the frame, a hinge plate provided above the frame, a pressure plate fixedly connected to the side of the hinge plate, a hinge rod hinged to the inner side of the hinge plate, a screen-applying roller hinged to the bottom end of the hinge rod, and adjustment components provided at both ends of the screen-applying roller;
[0007] The adjusting component includes a moving plate. Both ends of the static eliminator roller are rotatably connected to the side surface of the moving plate through bearings. A first sliding groove is formed in the side surface of the moving plate. A first slider is slidably connected to the inner wall of the first sliding groove. A pressing plate is fixedly connected to the side surface of the first slider. A threaded rod is rotatably connected to the bottom of the inner wall of the first sliding groove through a bearing. The top end of the threaded rod threadedly penetrates through the top of the inner wall of the first sliding groove and extends upward. A knob is fixedly connected to the top end of the threaded rod. An electrostatic elimination component is provided on the hinge rod.
[0008] As a further description of the above technical solution: The electrostatic elimination component includes a static eliminator roller. Limit columns are fixedly connected to both ends of the static eliminator roller. A second sliding groove is formed in the inner side of the hinge rod. Both ends of the static eliminator roller are slidably connected to the inner wall of the second sliding groove through the limit columns. A second spring is arranged in the second sliding groove. One end of the second spring is fixedly connected to the inner wall of the second sliding groove. The other end of the second spring is fixedly connected to the surface of the limit column. The surface of the static eliminator roller abuts against the surface of the screen sticking roller.
[0009] As a further description of the above technical solution: The pressing plate is in an "L" shape.
[0010] As a further description of the above technical solution: A limiting groove is formed in the bottom inner wall of the frame body. A ball is fixedly connected to the bottom of the moving plate. The bottom of the moving plate is slidably connected to the inner wall of the limiting groove through the ball.
[0011] As a further description of the above technical solution: A guide rail is fixedly connected to the bottom inner wall of the frame body. A placement plate is slidably connected to the top of the guide rail. A handle is fixedly connected to the front surface of the placement plate. A threaded hole is formed in the side surface of the frame body. A baffle is fixedly connected to the front surface of the placement plate. The back surface of the baffle fits against the inner side of the frame body.
[0012] As a further description of the above technical solution: A second sliding groove is formed in the side surface of the vertical plate. A second slider is slidably connected to the groove wall of the second sliding groove. The side surface of the second slider is fixedly connected to the side surface of the hinge plate. The side surface of the hinge plate is fixedly connected to a second slider. Both the second slider and the second sliding groove are in a "convex" shape.
[0013] As a further description of the above technical solution: A threaded groove is formed in the side surface of the baffle. The frame body and the placement plate are threadedly connected through a bolt.
[0014] As a further description of the above technical solution: An extension plate is fixedly connected to the side surface of the hinge rod. A first spring is fixedly connected to the outer wall of the extension plate.
[0015] As a further description of the above technical solution: a pressure plate is fixedly connected to the side of the hinge plate, a third spring is fixedly connected to the bottom of the second slider, and the bottom end of the third spring is fixedly connected to the bottom of the inner wall of the second slide groove.
[0016] This utility model has the following beneficial effects:
[0017] 1. In this utility model, by setting the adjustment component, the height of the abutment can be adjusted to fit the edges of screens of different thicknesses. With the abutment moving with the screen-applying roller, it can effectively prevent the screen from lifting during the application process, improve the flatness of the screen application, and ensure the application quality of the screen components.
[0018] 2. In this utility model, the static elimination roller and the screen bonding roller always maintain contact. The static elimination roller can eliminate the static electricity generated by the screen bonding roller during the bonding process in a timely manner. During the bonding operation, the limiting post slides in the fourth slide groove. With the elastic potential energy of the second spring, it can ensure that the static elimination roller is always in close contact with the screen bonding roller, avoiding static electricity attracting dust and affecting the bonding effect, or damaging the screen and the internal circuit of the device, thereby improving the yield and reliability of the screen assembly. Attached Figure Description
[0019] Figure 1 This is a front view of an OCA adhesive fully laminated screen assembly for preventing edge warping proposed in this utility model;
[0020] Figure 2 This is a partial structural diagram of an OCA adhesive fully laminated screen assembly for preventing edge warping, as proposed in this utility model.
[0021] Figure 3 This is a schematic diagram of the frame structure of an OCA adhesive fully laminated screen assembly for preventing edge warping, as proposed in this utility model.
[0022] Figure 4 This is a schematic diagram of the structure of the adjustment component of the OCA adhesive fully laminated screen assembly for preventing edge warping proposed in this utility model;
[0023] Figure 5 This is a schematic diagram of the static electricity elimination component of an OCA adhesive fully laminated screen assembly for preventing edge warping, as proposed in this utility model.
[0024] Legend:
[0025] 1. Frame; 2. Placing board; 3. Baffle; 4. Vertical board; 5. Pressing plate; 7. Adjusting component; 701. Moving board; 702. Knob; 703. First chute; 704. Restraining board; 705. Ball; 8. Screen - sticking roller; 9. Second slider; 10. Hinged plate; 11. Hinged rod; 12. Extension board; 13. First spring; 14. Electrostatic elimination component; 1401. Electrostatic elimination roller; 1402. Position - limiting column; 1403. Second spring; 15. Second chute; 16. Position - limiting groove; 17. Guide rail; 18. Third spring. Detailed implementation mode
[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.
[0027] Refer to Figures 1-3 , an embodiment provided by the present invention: an OCA glue full -贴合 screen assembly for preventing edge warping, including a frame 1. A vertical board 4 is fixedly connected to the top of the frame 1. The frame 1 serves as the basic support structure of the entire device, providing installation positions for other components. The vertical board 4 is used to connect and support other components related to the贴合 operation. Above the frame 1, there is a hinged plate 10. A pressing plate 5 is fixedly connected to the side of the hinged plate 10. The hinged plate 10 enables the pressing plate 5 to rotate flexibly, facilitating the operator to press down the pressing plate 5 to initiate the贴合 operation. A second chute 15 is opened on the side of the vertical board 4. A second slider 9 is slidably connected to the groove wall of the second chute 15. The second chute 15 and the second slider 9 cooperate with each other to limit the movement track of the hinged plate 10, enabling it to slide only along a specific direction, ensuring the stability of the device operation. The side of the second slider 9 is fixedly connected to the side of the hinged plate 10. The side of the hinged plate 10 is fixedly connected to the second slider 9. Both the second slider 9 and the second chute 15 are in a "convex" shape. The "convex" shape design can prevent the second slider 9 from disengaging from the second chute 15, enhancing the reliability of the structure.
[0028] Refer to Figures 1-3 It should be noted that the term "全贴合" in Chinese is not accurately translated here as there may be a more specific and accurate technical term in the field of display technology. You may need to adjust it according to the actual situation. Also, the text seems to be incomplete in some parts in terms of the overall description of the invention.A third spring 18 is fixedly connected to the bottom of the second slider 9. The bottom end of the third spring 18 is fixedly connected to the bottom of the inner wall of the second slide groove 15. The third spring 18 provides an upward elastic force to the pressure plate 5, allowing it to automatically reset after the bonding operation is completed. A pressure plate 5 is fixedly connected to the side of the hinge plate 10. A hinge rod 11 is hinged to the inner side of the hinge plate 10. Through the hinge design, the hinge rod 11 can rotate around the hinge plate 10 as an axis, which facilitates driving the screen bonding roller 8 to perform the bonding action. An extension plate 12 is fixedly connected to the side of the hinge rod 11. A first spring 13 is fixedly connected to the outer wall of the extension plate 12. The first spring 13 provides elastic force to the hinge rod 11, so that it can drive the screen-applying roller 8 to return to its original position after the bonding operation. The bottom end of the hinge rod 11 is hinged to the screen-applying roller 8. The screen-applying roller 8 acts directly on the screen and the device, and applies the screen to the device by rolling, ensuring the flatness and tightness of the bonding. Both ends of the screen-applying roller 8 are provided with adjustment components 7. The adjustment components 7 are used to adjust the position of the static elimination roller 1401 so that it can better cooperate with the screen-applying roller 8 and play a static elimination role.
[0029] Reference Figure 4 The adjustment assembly 7 includes a movable plate 701. The two ends of the static eliminator roller 1401 are rotatably connected to the sides of the movable plate 701 via bearings. The bearing connection allows the static eliminator roller 1401 to rotate freely, effectively contacting the screen-mounting roller 8 and eliminating its static electricity. A first groove 703 is formed on the side of the movable plate 701. A first slider is slidably connected to the inner wall of the first groove 703. The first groove 703 and the first slider cooperate to guide the movement of the abutment plate 704, ensuring it accurately abuts against the edge of the screen. A first slider is slidably connected to the inner wall of the first groove 703, and the abutment plate 704 is fixedly connected to the side of the first slider. 704 is used to fit the edge of the screen, positioning and fixing the screen to prevent displacement during the bonding process. The bottom of the inner wall of the first slide 703 is rotatably connected to a threaded rod via a bearing. The threaded rod's top thread penetrates the top of the inner wall of the first slide 703 and extends upward. A knob 702 is fixedly connected to the top of the threaded rod. By rotating the knob 702, the operator drives the threaded rod to rotate, thereby precisely controlling the position of the abutment plate 704. An electrostatic elimination component 14 is provided on the hinge rod 11. The electrostatic elimination component 14 can promptly eliminate the static electricity generated by the screen bonding roller 8 during the bonding process, preventing static electricity from damaging the screen and equipment.
[0030] Reference Figure 3 , Figure 4A guide rail 17 is fixedly connected to the bottom inner wall of the frame 1, and a placement plate 2 is slidably connected to the top of the guide rail 17. The guide rail 17 provides guidance for the removal and insertion of the placement plate 2, facilitating the placement and removal of the equipment to be bonded by the operator. A handle is fixedly connected to the front of the placement plate 2, making it easy for the operator to pull the placement plate 2 and improving the convenience of operation. Threaded holes are provided on the side of the frame 1, and a baffle 3 is fixedly connected to the front of the placement plate 2. The back of the baffle 3 fits against the inner side of the frame 1, and the baffle 3 serves as a limit to prevent the placement plate 2 from being pushed in or pulled out excessively, while also enhancing the stability of the placement plate 2. To ensure stability within the frame 1, a limiting groove 16 is provided on the bottom inner wall of the frame 1. A ball bearing 705 is fixedly connected to the bottom of the movable plate 701. The bottom of the movable plate 701 is slidably connected to the inner wall of the limiting groove 16 through the ball bearing 705. The ball bearing 705 and the limiting groove 16 cooperate to reduce the friction when the movable plate 701 moves, making the movement smoother and ensuring the smooth progress of the bonding operation. A threaded groove is provided on the side of the baffle 3. The frame 1 and the placement plate 2 are connected by bolt threads. Through the bolt connection, the placement plate 2 can be fixed inside the frame 1 to prevent it from shaking during the bonding process.
[0031] Reference Figure 2 , Figure 5 The static elimination assembly 14 includes a static elimination roller 1401; both ends of the static elimination roller 1401 are fixedly connected to limit posts 1402, and the inner side of the hinge rod 11 is provided with a fourth sliding groove. Both ends of the static elimination roller 1401 are slidably connected to the inner wall of the fourth sliding groove through the limit posts 1402. The limit posts 1402 and the fourth sliding groove cooperate to limit the movement range of the static elimination roller 1401, so that it can always maintain contact with the screen-applying roller 8. A second sliding groove 15 is provided with a second... Spring 1403, one end of spring 1403 is fixedly connected to the inner wall of slide groove 4. Spring 1403 provides elasticity to static elimination roller 1401, making it fit tightly against screen roller 8 to ensure static elimination effect. The other end of spring 1403 is fixedly connected to the surface of limit post 1402. The surface of static elimination roller 1401 abuts against the surface of screen roller 8. The abutment between the two enables static elimination roller 1401 to eliminate static electricity on the surface of screen roller 8 in a timely and effective manner.
[0032] Working principle: First, pull out the placement plate 2 from the inside of the frame 1. The bottom of the placement plate 2 slides on the guide rail 17. Then, place the device to be bonded on top of the placement plate 2. Select the appropriate thickness and specification of OCA adhesive according to the screen size and bonding requirements. Then, bond the screen to the device. After preparation, turn the knob 702 to drive the threaded rod to rotate. The rotating threaded rod drives the first slider to slide in the first groove 703. The abutment plate 704 moves downward with the first slider and uses the abutment plate to bond to the edge of the screen. Then, press down on the pressure plate 5. The pressure plate 5 drives the hinge rod 11 to rotate around the inside of the hinge plate 10. The bottom end of the hinge rod 11 drives the two screen bonding rollers 8 to bond to the top of the screen. Then, the two screen bonding rollers 8 are hinged by the hinge rod 11. The rollers move away from each other while the screen-mounting roller 8 rolls on the screen. The abutment plate 704 moves along the edge of the screen to prevent edge lifting and ensure that the screen and the device are in contact. With the elastic potential energy of the second spring 1403, the limiting post 1402 slides in the fourth groove, keeping the surface of the static elimination roller 1401 in contact with the surface of the screen-mounting roller 8. The static elimination roller 1401 can eliminate static electricity on the surface of the screen-mounting roller. While sliding, the limiting post 1402 squeezes the second spring 1403. With the ball bearing 705 sliding in the limiting groove 16, the friction between the moving plate 701 and the screen-mounting roller 8 during the movement is reduced. The two screen-mounting rollers 8 are reset by the first spring 13, and the pressure plate 5 is reset by the longitudinal elastic potential energy of the third spring 18.
[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An OCA adhesive fully laminated screen assembly for preventing edge warping, comprising a frame (1), characterized in that: A vertical plate (4) is fixedly connected to the top of the frame body (1). An articulated plate (10) is arranged above the frame body (1). A pressing plate (5) is fixedly connected to the side surface of the articulated plate (10). An articulated rod (11) is articulated inside the articulated plate (10). The bottom end of the articulated rod (11) is articulated with a screen - adhering roller (8). Adjusting components (7) are arranged at both ends of the screen - adhering roller (8). The adjusting component (7) includes a moving plate (701). A first chute (703) is formed in the side surface of the moving plate (701). A first slider is slidably connected to the inner wall of the first chute (703). A pressing plate (704) is fixedly connected to the side surface of the first slider. The bottom of the inner wall of the first chute (703) is rotatably connected with a threaded rod through a bearing. The top end of the threaded rod threadedly penetrates through the top of the inner wall of the first chute (703) and extends upward. A knob (702) is fixedly connected to the top end of the threaded rod. An electrostatic elimination component (14) is arranged on the articulated rod (11).
2. The OCA adhesive fully laminated screen assembly for preventing edge warping according to claim 1, characterized in that: The electrostatic elimination component (14) includes an electrostatic elimination roller (1401). The two ends of the electrostatic elimination roller (1401) are respectively rotatably connected to the side surface of the moving plate (701) through bearings. Limit columns (1402) are respectively fixedly connected to the two ends of the electrostatic elimination roller (1401). A fourth chute is formed inside the articulated rod (11). The two ends of the electrostatic elimination roller (1401) are respectively slidably connected to the inner wall of the fourth chute through the limit columns (1402). A second spring (1403) is arranged in the fourth chute. One end of the second spring (1403) is fixedly connected to the inner wall of the fourth chute. The other end of the second spring (1403) is fixedly connected to the surface of the limit column (1402). The surface of the electrostatic elimination roller (1401) abuts against the surface of the screen - adhering roller (8).
3. The OCA adhesive fully laminated screen assembly for preventing edge warping according to claim 1, characterized in that: The pressing plate (704) is in an "L" shape.
4. The OCA adhesive fully laminated screen assembly for preventing edge warping according to claim 1, characterized in that: A limiting groove (16) is formed in the bottom inner wall of the frame body (1). A ball (705) is fixedly connected to the bottom of the moving plate (701). The bottom of the moving plate (701) is slidably connected to the inner wall of the limiting groove (16) through the ball (705).
5. The OCA adhesive fully laminated screen assembly for preventing edge warping according to claim 1, characterized in that: A guide rail (17) is fixedly connected to the bottom inner wall of the frame body (1). A placing plate (2) is slidably connected to the top of the guide rail (17). A handle is fixedly connected to the front surface of the placing plate (2). A threaded hole is formed in the side surface of the frame body (1). A baffle (3) is fixedly connected to the front surface of the placing plate (2). The back surface of the baffle (3) is in contact with the inner side of the frame body (1).
6. The OCA adhesive fully laminated screen assembly for preventing edge warping according to claim 1, characterized in that: A second chute (15) is formed in the side surface of the vertical plate (4). A second slider (9) is slidably connected to the groove wall of the second chute (15). The side surface of the second slider (9) is fixedly connected to the side surface of the articulated plate (10). The side surface of the articulated plate (10) is fixedly connected to the second slider (9). The second slider (9) and the second chute (15) are both in a "convex" shape.
7. The OCA adhesive fully laminated screen assembly for preventing edge warping according to claim 5, characterized in that: The side of the baffle (3) is provided with a threaded groove, and the frame (1) and the placement plate (2) are connected by bolt threads.
8. The OCA adhesive fully laminated screen assembly for preventing edge warping according to claim 1, characterized in that: An extension plate (12) is fixedly connected to the side of the hinge rod (11), and a No. 1 spring (13) is fixedly connected to the outer wall of the extension plate (12).
9. The OCA adhesive fully laminated screen assembly for preventing edge warping according to claim 6, characterized in that: A pressure plate (5) is fixedly connected to the side of the hinge plate (10), and a third spring (18) is fixedly connected to the bottom of the second slider (9). The bottom end of the third spring (18) is fixedly connected to the bottom of the inner wall of the second slide groove (15).