Laminating jig and laminating method

Abstract

The invention relates to a laminating jig and a laminating method. The attaching jig comprises a first jig plate, a first elastic buffer layer, a vacuum part, a first elastic assembly and a second jig plate, a first profiling groove is formed in the first jig plate, and the side wall of the first profiling groove is constructed to abut against the outer contour edge of the display screen; the first elastic buffer layer is arranged in the first profiling groove, and the first elastic buffer layer is used for bearing the display screen; the vacuum part is used for vacuumizing the first profiling groove; the first elastic assembly is arranged on the first jig plate, and the first elastic assembly can support the curved surface cover plate; the second jig plate is provided with a profiling boss matched with the concave arc face of the curved face cover plate. Through the arrangement, the first elastic buffer layer plays a role in buffering and filling through extrusion deformation in the attaching process of the display screen and the curved surface cover plate, the situation that when the display screen is directly arranged in the first profiling groove, the display screen is prone to being damaged due to stress concentration is avoided, and the yield of products is increased.

Description

Technical Field

[0001] The present application relates to the field of jig technology, and in particular to a laminating jig and a laminating method. Background Art

[0002] With the development of display technology, more and more electronic devices are equipped with curved screens. Curved screens provide better display effects than traditional flat screens. When the human eye is convex at a certain curvature, the curvature of the curved screen ensures that the eye can convey the display image equally at every position after seeing the display screen, thus providing a better visual display effect.

[0003] The curved screen includes a display screen and a curved cover plate. During assembly, the display screen and the curved cover plate need to be bonded together. However, during the bonding process, the display screen is prone to breakage, resulting in a lower yield rate of the curved screen. Summary of the Invention

[0004] Based on this, it is necessary to provide a bonding jig and bonding method to address the problem that the display screen in the curved screen is prone to breakage during the current curved screen bonding process, thereby reducing the yield rate of the curved screen.

[0005] A laminating jig includes a first jig plate, a first elastic buffer layer, a vacuum member, a first elastic component, and a second jig plate, wherein:

[0006] The first jig plate is provided with a first contoured groove, wherein the sidewall of the first contoured groove is configured to abut against the outer contour edge of the display screen;

[0007] The first elastic buffer layer is disposed in the first contoured groove, and the first elastic buffer layer is used to support the display screen;

[0008] The vacuum member is used to vacuum the first contoured groove;

[0009] The first elastic component is disposed on the first fixture plate, and the first elastic component is capable of supporting the curved cover plate;

[0010] The second fixture plate has a contoured boss that matches the concave arc surface of the curved cover plate.

[0011] In one embodiment, the laminating jig further includes a second elastic buffer layer, and the second elastic buffer layer is used to be arranged on a side of the curved cover plate away from the first elastic component.

[0012] In one embodiment, the first jig plate is further provided with a second profiling groove, the sidewall of the second profiling groove is configured to abut against the outer contour edge of the curved cover plate, and the orthographic projection of the first profiling groove on the second profiling groove is located within the second profiling groove.

[0013] In one embodiment, the first fixture plate further defines an avoidance notch, wherein the avoidance notch communicates with the second profiling groove and extends to the first profiling groove.

[0014] In one embodiment, the first elastic component includes a plurality of first elastic members, and the plurality of first elastic members are spaced apart and arranged at the bottom of the second contoured groove.

[0015] In one embodiment, the fitting jig further includes a second elastic component disposed on the first jig plate, and the second elastic component is capable of supporting the second jig plate.

[0016] In one embodiment, the fitting jig further includes a positioning assembly, which includes a first positioning member and a second positioning member spaced apart along a first direction on the first jig plate, and a receiving space for clamping the side wall of the second jig plate is formed between the first positioning member and the second positioning member.

[0017] In one embodiment, a cavity communicating with the vacuum component is formed inside the first fixture plate, and a bottom wall of the first contoured groove is provided with a plurality of adsorption holes communicating with the cavity.

[0018] In the aforementioned laminating jig, when force is applied to the second jig plate, the curved cover plate transmits force to the first elastic component. The first elastic component compresses, causing the curved cover plate to move downward and align with the display screen, achieving lamination between the display screen and the curved cover plate. Furthermore, a first elastic buffer layer is positioned within the first contoured groove. The first elastic buffer layer is used to support the display screen. During the lamination process between the display screen and the curved cover plate, the first elastic buffer layer deforms through compression to provide cushioning and filling. This prevents stress concentration damage to the display screen, which can occur when the display screen is directly positioned within the first contoured groove. Furthermore, the deformation of the first elastic buffer layer helps eliminate edge warping and localized gaps that can occur during lamination, thereby improving product yield.

[0019] The present application also discloses a method for laminating the laminating jig according to any of the above embodiments, comprising the following steps:

[0020] Disposing an adhesive on a side of the curved cover plate used for connecting to the display screen;

[0021] The first contoured groove is evacuated by the vacuum member to deform the first elastic buffer layer so that two sides of the first elastic buffer layer are adapted to the shapes of the first contoured groove and the display screen;

[0022] A force directed toward the first jig is applied to the second jig plate to make the curved cover plate fit the display screen.

[0023] In one embodiment, the first elastic buffer layer is buffer foam. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structural explosion of the bonding fixture provided in this application.

[0025] Figure 2 This is a schematic structural diagram of the first fixture plate provided in this application.

[0026] Figure 3 This is a schematic structural diagram of the second fixture plate provided in this application.

[0027] in:

[0028] 10. Laminating jig; a. First direction; b. Second direction; 20. Curved screen; 21. Display screen; 22. Curved cover plate;

[0029] 100. First jig plate; 110. First contoured groove; 120. Second contoured groove; 130. Avoidance notch; 140. Mounting protrusion; 150. Adsorption hole; 200. First elastic buffer layer; 300. First elastic member; 400. Second jig plate; 410. Contoured boss; 500. Second elastic buffer layer; 600. Second elastic member; 700. Positioning assembly; 710. First positioning member; 720. Second positioning member; 800. Adhesive. DETAILED DESCRIPTION

[0030] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0032] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0033] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0036] See Figure 1 、 Figure 2 and Figure 3 As shown, Figure 1 FIG. 1 shows an exploded structural diagram of a laminating jig 10 in an embodiment of the present application. Figure 2 FIG. 1 shows a schematic structural diagram of a first fixture plate 100 in an embodiment of the present application. Figure 3 A schematic structural diagram of the second fixture plate 400 in one embodiment of the present application is shown.

[0037] The laminating jig 10 provided in one embodiment of the present application is used for laminating a display screen 21 and a curved cover plate 22 so that the display screen 21 and the curved cover plate 22 are assembled to form a curved screen 20 , wherein the display screen 21 is a flexible display screen or a curved display screen.

[0038] The laminating jig 10 includes a first jig plate 100, a first elastic buffer layer 200, a vacuum element, a first elastic component, and a second jig plate 400. The first jig plate 100 defines a first contoured groove 110, the sidewalls of which are configured to abut against the outer contour of the display screen 21. The first elastic buffer layer 200 is disposed within the first contoured groove 110 and is used to support the display screen 21. Specifically, the first elastic buffer layer 200 is disposed within the first contoured groove 110 using an adhesive, which can be a double-sided tape, glue, or other viscous material. The thickness of the first elastic buffer layer 200 ranges from 0.5 mm to 1 mm, and the first elastic buffer layer 200 can be made of a flexible material such as cushioning foam or cushioning silicone.

[0039] The vacuum element is used to evacuate the first contoured groove 110, ensuring that the first elastic buffer layer 200 is in close contact with the first contoured groove. Simultaneously, the display screen 21 disposed on the first elastic buffer layer 200 is in close contact with the first elastic buffer layer 200. This prevents stress concentration that could damage the display screen 21 if the display screen 21 is directly disposed in the first contoured groove 110. It should be noted that the first contoured groove is concavely arc-shaped to facilitate positioning of the curved display screen. It is important to emphasize that when the display screen 21 is a flexible display, it is initially uncurved. Through vacuuming, the flexible display screen deforms along with the first elastic buffer layer 200 to form a shape that matches the first contoured groove, facilitating the subsequent bonding of the display screen 21 with the curved cover plate 22 to form the curved screen 20.

[0040] The first elastic component is disposed on the first fixture plate 100 and is capable of supporting the curved cover plate 22. In a specific configuration, the curved cover plate 22 is directly opposite the display screen 21. The second fixture plate 400 has a contoured boss 410 that matches the concave surface of the curved cover plate 22. The curvature of the contoured boss 410 is the same as that of the curved cover plate 22.

[0041] In the aforementioned laminating jig 10, when force is applied to the second jig plate 400 so that the curved cover plate 22 transmits force to the first elastic component, the first elastic component compresses, causing the curved cover plate 22 to move downward and mate with the display screen 21, thereby achieving lamination between the display screen 21 and the curved cover plate 22. Furthermore, by placing a first elastic buffer layer 200 within the first contoured groove 110, the first elastic buffer layer 200 is used to support the display screen 21. During the lamination process between the display screen 21 and the curved cover plate 22, the first elastic buffer layer 200 acts as a buffer and filler through compression deformation. This prevents stress concentration that could damage the display screen 21 if the display screen 21 is directly placed in the first contoured groove 110. Furthermore, the deformation of the first elastic buffer layer 200 helps eliminate edge warping and local gaps that are prone to occur during lamination, thereby improving the product's yield rate.

[0042] In order to avoid stress concentration on the curved cover plate 22, resulting in damage or deformation, when applying force to the second jig plate 400 to move the curved cover plate 22 downward, in a preferred embodiment, the fitting jig 10 also includes a second elastic buffer layer 500. The second elastic buffer layer 500 is used to be arranged on the side of the curved cover plate 22 away from the first elastic component, that is, the second elastic buffer layer 500 is located between the curved cover plate 22 and the second jig plate 400. In the specific setting, the thickness of the second elastic buffer layer 500 ranges from 5mm to 10mm, and the second elastic buffer layer 500 can be a flexible material such as buffer foam, buffer silicone, etc. Through the above setting, the second elastic buffer layer 500 acts as a buffer to protect the curved cover plate 22.

[0043] To ensure precise alignment between the curved cover plate 22 and the display screen 21, a preferred embodiment further defines a second contoured groove 120 on the first jig plate 100. The sidewalls of the second contoured groove 120 are configured to abut against the outer contour of the curved cover plate 22, and the orthographic projection of the first contoured groove 110 is positioned within the second contoured groove 120. In a specific configuration, after the display screen 21 is positioned within the first contoured groove 110, the depth of the first contoured groove 110 is either within or exceeds the depth of the first contoured groove 110, ensuring alignment between the display screen 21 and the curved cover plate 22.

[0044] Considering that some display screens 21 may have flexible printed circuits (FPCs) extending beyond the sides, failure to properly avoid these FPCs during the lamination process could potentially damage the FPC structure, leading to quality issues in the final laminated curved screen 20. To address this, the first jig plate 100 is further provided with an escape notch 130 , which connects to the second contoured groove 120 and extends into the first contoured groove 110 .

[0045] To facilitate the first elastic component supporting the curved cover plate 22 while not affecting the adhesion between the curved cover plate 22 and the display screen 21, the first elastic component specifically includes a plurality of first elastic members 300, which are spaced apart and arranged at the bottom of the second contoured groove 120. Specifically, the first elastic members 300 are configured to have a tendency to retract into the bottom of the second contoured groove 120 when compressed by the curved cover plate 22, thereby allowing the curved cover plate 22 to enter the second contoured groove 120; and to have a tendency to extend out of the bottom of the second contoured groove 120 when not compressed by the curved cover plate 22, thereby causing the first elastic members 300 to abut the convex surface of the curved cover plate 22 and press the curved cover plate 22 above the second contoured groove 120, thereby spacing the curved cover plate 22 from the display screen 21 and preventing premature contact between the curved cover plate 22 and the display screen 21 below, thereby causing bubbles in the adhesion.

[0046] It should be noted that the number of first elastic members 300 can be two, four, six, or more. To better support the curved cover plate 22, the first elastic members 300 are generally positioned at the contour edge of the bottom of the second contoured groove. Multiple first elastic members 300 are symmetrically arranged on both sides of the second contoured groove along the first direction a to ensure the balance of the curved cover plate 22. To more conveniently implement the telescopic function of the first elastic member 300, in a preferred embodiment, the first elastic member 300 is an elastic ejector pin. In a specific configuration, the first elastic member 300 can also be a spring. The first elastic member 300 is not limited to these elastic ejector pins and springs and can be made of any elastic and flexible material.

[0047] To prevent overloading of the first elastic component, a preferred embodiment includes the laminating jig 10 further comprising a second elastic component disposed on the first jig plate 100, which is capable of supporting the second jig plate 400. Through this arrangement, the first elastic component supports the curved cover plate 22, while the second elastic component supports the second jig plate 400 adapted to the curved cover plate 22, thereby preventing the weight of the second jig plate 400 disposed on the curved cover plate 22 from causing the curved cover plate 22 to prematurely contact the display screen 21 below, thereby causing laminating bubbles.

[0048] To more conveniently support the second jig plate 400, a preferred embodiment provides mounting protrusions 140 at both ends of the first jig plate 100 along the second direction b. The second elastic assembly includes a plurality of second elastic members 600 spaced apart on the mounting protrusions 140, with the second direction b being perpendicular to the first direction a. Specifically, the second elastic members 600 are configured to have a tendency to retract into the mounting protrusions 140 when under pressure from the second jig plate 400, thereby allowing the contoured bosses 410 of the second jig plate 400 to mate with the concave arc surface of the curved cover plate 22. When not under pressure from the second jig plate 400, the second elastic members 600 tend to extend beyond the mounting protrusions 140, thereby causing the second elastic members 600 to abut the second jig plate 400 and press the second jig plate 400 against the curved cover plate 22, thereby spacing the second jig plate 400 from the curved cover plate 22 and preventing the curved cover plate 22 from being suddenly compressed and prematurely contacting the display screen 21 below, thereby causing bubbles to form during bonding.

[0049] It should be noted that the specific number of the second elastic members 600 can be 2, 4, 6 or more. The second elastic member 600 is preferably an elastic thimble but is not limited to an elastic thimble. It can also be a spring or other elastic and flexible material.

[0050] To better position the second jig plate 400, in a preferred embodiment, the laminating jig 10 further includes a positioning assembly 700. The positioning assembly 700 includes a first positioning member 710 and a second positioning member 720 spaced apart along the first direction a on the first jig plate 100. The first positioning member 710 and the second positioning member 720 define a receiving space for clamping the sidewall of the second jig plate 400. Specifically, the positioning assembly 700 is disposed on the outer periphery of the second contoured groove 120. The number of first positioning members 710 and second positioning members 720 is the same, and can be two, three, or more.

[0051] To facilitate the vacuum element's evacuation of the first contoured groove 110, a preferred embodiment comprises a cavity formed within the first fixture plate 100, which communicates with the vacuum element. The bottom wall of the first contoured groove 110 is provided with a plurality of adsorption holes 150, which communicate with the cavity. Specifically, the adsorption holes 150 are arranged at intervals, and may be evenly spaced. With this arrangement, the vacuum element evacuates the cavity, generating a negative pressure within the cavity. The adsorption holes 150 communicate with the cavity, adsorbing the first elastic buffer layer 200 and the display screen 21, thereby ensuring that the first elastic buffer layer 200 and the display screen 21 fit within the first contoured groove 110.

[0052] The present application also provides a laminating method of the laminating jig 10 according to any of the above embodiments, comprising the following steps:

[0053] Adhesive 800 is applied to the side of the curved cover plate 22 intended for connection to the display screen 21. In practice, adhesive 800 can be a sheet of adhesive. A vacuum is applied to the first contoured groove 110 using a vacuum element to deform the first elastic buffer layer 200. The sides of the first elastic buffer layer 200 conform to the shapes of the first contoured groove 110 and the display screen 21. A force directed toward the first jig is applied to the second jig plate 400 to mate the curved cover plate 22 with the display screen 21. The second jig plate 400 is preferably pressed against the first jig plate 100 using a laminating device.

[0054] During the specific operation, the first elastic buffer layer 200 is set in the first contoured groove 110; the display screen 21 is set in the first elastic buffer layer 200; the first elastic buffer layer 200 and the display screen 21 are adsorbed by the vacuum part; the curved cover plate 22 provided with the adhesive 800 is set on the first elastic component; the second elastic buffer layer 500 is set on the curved cover plate 22; the second jig plate 400 is set on the second elastic component; then the bonding jig 10 is placed in the vacuum chamber of the bonding device; then the bonding device is started for pressing to complete the bonding of the curved cover plate 22 and the display screen 21.

[0055] Through the above-mentioned setting, the present application uses sheet glue to bond the display screen 21 and the curved cover plate 22, which shortens the time and process and improves the bonding efficiency compared with the current glue filling bonding process; it can also eliminate the dam glue used for edge reinforcement, and solve the problem of bonding the curved screen 20 with ultra-narrow frame structural materials.

[0056] At the same time, in the bonding jig 10 used in the present application, a first elastic buffer layer 200 is arranged in the first contoured groove 110. The first elastic buffer layer 200 is used to support the display screen 21. During the bonding process between the display screen 21 and the curved cover plate 22, the first elastic buffer layer 200 plays a buffering and filling role through extrusion deformation. On the one hand, it avoids the situation where stress concentration is easily damaged when the display screen 21 is directly set in the first contoured groove 110. On the other hand, the deformation of the first elastic buffer layer 200 is conducive to eliminating edge warping and local gaps that are prone to occur during bonding, thereby improving the product yield.

[0057] The laminating jig 10 also includes a first contoured groove 110, a second contoured groove 120, and a second elastic buffer layer 500, facilitating high-precision lamination of the display screen 21 and the curved cover plate 22. This eliminates the need for high-end CCD alignment laminating machines or screen machine CCD alignment, providing significant flexibility in the selection of laminating equipment and eliminating the constraints of equipment mismatch. This facilitates the assembly of various curved screens 20, including single-curved screens, S-shaped multi-faceted screens, V-shaped screens, and other curved screens. The screen material is also flexible, with options for PMMA, GLASS, PC, IML, and other materials.

[0058] It should also be noted that the current metal fixtures are affected by thermal deformation in high-temperature environments, which affects the bonding accuracy. Based on this, the bonding fixture 10 of the present application is made of high-temperature resistant silicone. It should be emphasized that the high-temperature resistant silicone substrate remains stable in an environment of 200°C and will not affect the bonding accuracy due to thermal deformation.

[0059] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A laminating jig, characterized in that: The laminating jig includes a first jig plate, a first elastic buffer layer, a vacuum member, a first elastic component and a second jig plate, wherein: The first jig plate is provided with a first contoured groove, wherein the sidewall of the first contoured groove is configured to abut against the outer contour edge of the display screen; The first elastic buffer layer is disposed in the first contoured groove, and the first elastic buffer layer is used to support the display screen; The vacuum member is used to vacuum the first contoured groove; The first elastic component is disposed on the first fixture plate, and the first elastic component is capable of supporting the curved cover plate; The second fixture plate has a contoured boss that matches the concave arc surface of the curved cover plate.

2. The laminating jig according to claim 1, characterized in that: The laminating jig further includes a second elastic buffer layer, which is used to be arranged on a side of the curved cover plate away from the first elastic component.

3. The laminating jig according to claim 1, characterized in that: The first fixture plate is further provided with a second profiling groove, the sidewall of which is configured to abut against the outer contour edge of the curved cover plate, and the orthographic projection of the first profiling groove on the second profiling groove is located within the second profiling groove.

4. The laminating jig according to claim 3, characterized in that: The first fixture plate is further provided with an avoidance notch, which is connected to the second profiling groove and extends to the first profiling groove.

5. The laminating jig according to claim 3, characterized in that: The first elastic component includes a plurality of first elastic members, and the plurality of first elastic members are arranged at intervals at the bottom of the second contoured groove.

6. The laminating jig according to claim 1, characterized in that: The laminating jig further includes a second elastic component disposed on the first jig plate, and the second elastic component is capable of supporting the second jig plate.

7. The laminating jig according to claim 1, characterized in that: The laminating jig further includes a positioning assembly, which includes a first positioning member and a second positioning member spaced apart along a first direction on the first jig plate, and an accommodating space for clamping the side wall of the second jig plate is formed between the first positioning member and the second positioning member.

8. The laminating jig according to claim 1, characterized in that: A cavity communicating with the vacuum component is formed inside the first fixture plate, and a plurality of adsorption holes communicating with the cavity are formed on the bottom wall of the first profiling groove.

9. A laminating method based on the laminating jig according to any one of claims 1 to 8, characterized in that: The steps include: Disposing an adhesive on a side of the curved cover plate used for connecting to the display screen; The first contoured groove is evacuated by the vacuum member to deform the first elastic buffer layer so that two sides of the first elastic buffer layer are adapted to the shapes of the first contoured groove and the display screen; A force directed toward the first jig is applied to the second jig plate to make the curved cover plate fit the display screen.

10. The laminating method according to claim 9, characterized in that: The first elastic buffer layer is buffer foam.

Images