Curved screen laminating jig and laminating method

Abstract

An embodiment of the present invention discloses a curved screen laminating jig and a laminating method, comprising a first jig for carrying the curved cover plate, the first jig comprising a laminating starting end and a laminating ending end; a second jig arranged opposite to the first jig, for grabbing the flexible display panel and rolling it along the laminating starting end of the first jig to the laminating ending end of the first jig, gradually laminating the flexible display panel to the curved cover plate, so that the flexible display panel and the curved cover plate are laminated; the first jig comprises a carrier and a carrier plate located on the carrier plate, the carrier plate is an arc-shaped structure arched toward a direction approaching the second jig, the curved cover plate is fixed to a side surface of the carrier plate close to the second jig by a fixing component, and the curvature of the carrier plate is the same as that of the curved cover plate; the second jig is an arc-shaped structure protruding toward the direction of the first jig and corresponding to the shape of the carrier plate.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and more specifically, to a curved screen lamination jig and lamination method. Background Art

[0002] The LCD (Liquid Crystal Display) industry has entered a mature stage, and flexible OLED (Organic Light-Emitting Diode) displays are a new growth point for the future display industry. The flexible characteristics of flexible OLED displays are constantly being developed and utilized. For example, attaching flexible OLEDs to curved glass cover plates can realize front and side displays of products. With the development of technology, curved screens will gradually become mainstream display screens. In related technologies, when bonding a flexible display panel to a curved cover plate, the flexible display panel and the cover plate are generally placed on a lower cavity jig and an upper cavity jig respectively, and the upper cavity jig is pressed down to vacuum bond the flexible display panel to the convex surface of the curved cover plate. This technology has some defects. For example, during the bonding process, it is difficult to control the contact sequence of the flexible display panel and the curved cover plate, the pressure distribution is uneven during bonding, and bonding cracks, bubbles and other defects are easily generated, resulting in bonding failure. Summary of the Invention

[0003] In view of the above problems, an object of the present invention is to provide a curved screen lamination jig that can reduce the lamination defect rate.

[0004] Another object of the present invention is to provide a bonding method using the above-mentioned curved screen bonding jig.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] According to one aspect of the present invention, a curved screen lamination jig is provided, comprising:

[0007] A first jig, used to support the curved cover plate, the first jig comprising a lamination start end and a lamination end end;

[0008] a second jig, disposed opposite to the first jig, for grasping the flexible display panel and rolling it along the laminating start end of the first jig to the laminating end end of the first jig, gradually laminating the flexible display panel to the curved cover plate, so that the flexible display panel and the curved cover plate are laminated;

[0009] The first jig includes a carrier and a carrier plate located on the carrier, the carrier plate being arc-shaped and arching toward the second jig, the curved cover plate being fixed to a side surface of the carrier plate close to the second jig by a fixing assembly, and the curvature of the carrier plate is the same as that of the curved cover plate;

[0010] The second fixture is an arc-shaped structure protruding toward the first fixture and corresponding to the shape of the carrier plate.

[0011] In addition, an optional solution is that the fixing assembly includes a first positioning clamp and a second positioning clamp;

[0012] The first positioning clamp is located at the bonding starting end of the first jig, and one end of the curved cover plate is fixed to the bonding starting end of the first jig through the first positioning clamp;

[0013] The second positioning clamp is located at the fitting end of the first fixture, and the other end of the curved cover plate is connected and fixed to the second positioning clamp;

[0014] The second positioning clamp can drive the curved cover plate to move in a direction away from the first positioning clamp as the second fixture rolls.

[0015] In addition, an optional solution is that the end of the second positioning clamp facing away from the curved cover plate includes a return spring, and the return spring is configured to restore the curved cover plate to its original shape after the bonding work is completed.

[0016] In addition, an optional solution is that a groove is provided on a surface of one side of the carrier close to the carrier plate, and the groove is matched with the shape of the carrier plate, and the depth of the groove is the same as the thickness of the carrier plate.

[0017] In addition, an optional solution is that the thickness of the carrier plate is 3 mm.

[0018] In addition, an optional solution is that a buffer spring is included between the carrier plate and the carrier platform, one end of the buffer spring is connected to the carrier plate, and the other end is connected to the carrier platform.

[0019] In addition, an optional solution is that the material of the carrier board is a flexible material.

[0020] In addition, an optional solution is that the curved screen laminating jig further includes an image acquisition device for acquiring position images of the first jig and the second jig, and the image acquisition device is located between the first jig and the second jig.

[0021] According to another aspect of the present invention, a method for laminating a curved screen using the above-mentioned laminating jig is provided, comprising:

[0022] Feeding the curved cover plate onto the first jig and fixing it to the side of the carrier plate close to the second jig via a fixing assembly;

[0023] The second fixture rolls and grabs the flexible display panel;

[0024] Aligning the flexible display panel and the curved cover plate;

[0025] The second jig rolls along the arc of the carrier plate from the lamination start end of the first jig to the lamination end end of the first jig, pressing the flexible display panel to the curved cover plate, so that the flexible display panel and the curved cover plate are laminated;

[0026] The curved cover returns to its original state and the fitting is completed.

[0027] In addition, an optional solution is that aligning the flexible display panel and the curved cover plate includes:

[0028] detecting an outer contour line or a plurality of first marks of the flexible display panel, and determining a first graphic according to the outer contour line or the plurality of first marks of the flexible display panel;

[0029] Comparing the first graph with a first set graph to obtain a first motion control amount; and controlling the movement of the flexible display panel according to the first motion control amount;

[0030] and / or,

[0031] detecting an outer contour line or a plurality of second marks of the curved cover plate, and determining a second graphic according to the outer contour line or the plurality of second marks of the curved cover plate;

[0032] Comparing the second graph with a second set graph to obtain a second motion control amount; controlling the motion of the curved cover plate according to the second motion control amount;

[0033] Wherein, after the flexible display panel moves based on the first motion control amount and / or the curved cover moves based on the second motion control amount, the center of the flexible display panel is aligned with the center of the curved cover.

[0034] The beneficial effects of the present invention are as follows:

[0035] Embodiments of the present invention provide a curved screen lamination jig and lamination method. A first jig and a second jig are used to laminarize a flexible display panel and a curved cover plate. A groove having a depth equal to the thickness of the carrier plate is formed on the carrier platform of the first jig. During the lamination process, the second jig compresses the carrier plate so that it fills the groove, achieving a planar rolling lamination of the flexible display panel and the curved cover plate. When the second jig rolls away from the current lamination position, the carrier plate at that position arches back up. This ensures a smooth lamination and effectively avoids the bubble problem caused by premature contact between the flexible display panel and the curved cover plate in traditional press lamination methods. Furthermore, the curved screen lamination jig provided by the present invention does not require the use of a contoured carrier film and can be laminarized in atmospheric conditions, thereby reducing production costs, simplifying operation, and improving production efficiency. A buffer spring is provided between the carrier plate and the carrier platform of the first jig. The buffer spring ensures a more uniform pressure distribution during lamination, reducing the incidence of defects such as bubbles or cracks. The curved screen laminating jig provided in the embodiment of the present invention is also applicable to the laminating process of flexible film materials such as heat dissipation films, and has the advantages of simple structure, high laminating yield, low production cost, and wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] Figure 1 A schematic structural diagram of a curved screen lamination jig in the prior art is shown.

[0038] Figure 2 A schematic structural diagram of a curved screen laminating jig provided by an embodiment of the present invention is shown.

[0039] Figures 3a-3e A schematic diagram showing the steps of a curved screen laminating jig provided by an embodiment of the present invention is shown.

[0040] Figure 4 A flow chart of the bonding method provided by an embodiment of the present invention is shown.

[0041] Figure 5 A flow chart of aligning the flexible display panel and the curved cover plate provided by one embodiment of the present invention is shown.

[0042] Figure 6 A flow chart of aligning the flexible display panel and the curved cover plate provided by another embodiment of the present invention is shown.

[0043] Figure 7 A flow chart of aligning the flexible display panel and the curved cover plate provided by another embodiment of the present invention is shown. DETAILED DESCRIPTION

[0044] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0045] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0046] In the present invention, unless otherwise clearly stipulated and limited, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them.

[0047] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0048] The LCD (Liquid Crystal Display) industry has entered a mature stage. Flexible OLED (Organic Light-Emitting Diode) displays are a new growth point for the future display industry. The flexible characteristics of flexible OLED displays are constantly being developed and utilized. For example, attaching flexible OLEDs to curved glass cover plates can realize front and side displays of products. With the development of technology, curved screens will gradually become mainstream display screens. The C-type screen is a new type of curved screen product form, and there is currently no mature and complete bonding process. For example, in related technologies, such as Figure 1 As shown, the flexible display panel 1 and C-shaped cover plate 2 are placed on the lower and upper cavity jigs, respectively. The upper cavity jig is pressed downward to vacuum-bond the flexible display panel 1 to the convex surface of the C-shaped cover plate 2. This technology has some drawbacks, such as the difficulty in controlling the contact sequence between the flexible display panel and the curved cover plate during bonding, uneven pressure distribution during bonding, and the tendency to produce bonding cracks, bubbles, and other defects, leading to bonding failure.

[0049] In order to improve the bonding effect of the curved screen, the embodiments of the present disclosure provide a bonding device and a bonding method for a curved screen, which can be applied to various curved screen bonding processes to achieve the bonding of the flexible display panel and the annular cover plate, thereby improving the bonding effect between the two.

[0050] like Figure 2-3e As shown, an embodiment of the present invention provides a curved screen laminating jig for laminating a flexible display panel 1 and a curved cover plate 2. The curved screen laminating jig includes a first jig 3 and a second jig 4, wherein the first jig 3 and the second jig 4 are arranged opposite to each other. In this embodiment, the first jig 3 is arranged below the second jig 4. The first jig 3 is used to support the curved cover plate 2. The first jig 3 includes a laminating start end and a laminating end end. Figure 2 As shown in the figure, the right end of the first jig 3 is the laminating start end of the first jig 3, and the left end of the first jig 3 is the laminating end end of the first jig 3. The second jig 4 can grab the flexible display panel 1 and roll along the laminating start end of the first jig 3 to the laminating end end of the first jig 3, gradually laminating the flexible display panel 1 to the curved cover plate 2, so that the flexible display panel 1 is laminated with the curved cover plate 2. In other embodiments, the laminating start end can also be located at the left end of the first jig 3, and correspondingly, the laminating end end is located at the right end of the first jig 3. When laminating the flexible display panel 1 and the curved cover plate 2, the second jig 4 grabs the flexible display panel 1 and rolls from the left end of the first jig 3 to the right end of the first jig 3, so that the flexible display panel 1 is laminated with the curved cover plate 2. This embodiment does not impose any specific restrictions on this, and the technology in this field can be reasonably arranged according to actual needs.

[0051] In one embodiment, the first jig 3 includes a carrier 31 and a carrier plate 32 positioned on the carrier 31. Both the carrier 31 and the carrier plate 32 are made of flexible silicone. The carrier plate 32 is fixed to the carrier 31 in the direction close to the second jig 4. The carrier plate 32 is curved, arching toward the second jig 4, and the upward curvature of the carrier plate 32 is the same as the curvature of the curved cover 2. The curved cover 2 is placed on the side of the carrier plate 32 close to the second jig 4 and fixed to the carrier plate 32 via a fixing assembly, facilitating subsequent bonding with the flexible display panel 1.

[0052] In one embodiment, the second jig 4 is an arc-shaped structure that protrudes toward the first jig 3, and the arc-shaped structure corresponds to the shape of the carrier 32. In this embodiment, when laminating the flexible display panel 1 and the curved cover plate 2, the right end of the second jig 4 carrying the flexible display panel 1 is brought into contact with the laminating start end of the first jig 3 carrying the curved cover plate 2. The second jig 4 is then rolled along the laminating start end of the first jig 3 to the laminating end end of the first jig 3. During the rolling process, the flexible display panel 1 is gradually laminated to the curved cover plate 2, completing a laminating process.

[0053] In a specific embodiment, the fixing assembly includes a first positioning clamp 5 and a second positioning clamp 6. The first positioning clamp 5 is located at the starting end of the bonding of the first jig 3, that is, the right end of the first jig 3 in the figure. The first positioning clamp 5 clamps one end of the curved cover plate 2 and the starting end of the bonding of the first jig 3, fixing one end of the curved cover plate 2 to the starting end of the bonding of the first jig 3. During the bonding process, the first positioning clamp 5 remains stationary to prevent the curved cover plate 2 from moving with the second jig 4 during the rolling bonding process, causing the curved cover plate 2 to shift and resulting in bonding failure. The second positioning clamp 6 is located at the end end of the bonding of the first jig 3, that is, the right end of the first jig 3 in the figure. The second positioning clamp 6 is connected and fixed to the other end of the curved cover plate 2. The second positioning clamp 6 is not fixed to the first jig 3, and the second positioning clamp 3 can drive the curved cover plate 2 to move in a direction away from the first positioning clamp 5 as the second jig 4 rolls, so that the flexible display panel 1 gradually bonds to the curved cover plate 2.

[0054] In this embodiment, if Figure 3c As shown, the end of the second positioning clamp 6 away from the first positioning clamp 5 is connected to a return spring 7, one end of the return spring 7 is connected to the second positioning clamp 6, and the other end is connected to a limit plate. Figure 3c-3e As shown, as the second jig 4 rolls, the second positioning clamp 6 moves to the left as the curved cover plate 2 deforms, squeezing the reset spring 7; when the bonding is completed, the second jig 4 returns to the initial position, the reset spring 7 resets, and at the same time drives the curved cover plate 2 back to its original position, thereby realizing the reset of the curved screen after bonding.

[0055] In one embodiment, a groove 8 corresponding to the shape of the carrier 32 is formed on the side of the carrier 31 near the carrier plate 32. The depth of the groove 8 is the same as the thickness of the carrier plate 32, and the width of the groove 8 is also the same as the width of the carrier plate 32. The carrier plate 32 is made of flexible silicone with good elastic recovery rate. The carrier plate 32 is fixed to the carrier 32 and arches upward in an arc-shaped structure, forming an arched hollow portion 33 between the carrier plate 32 and the groove 8. When the curved cover plate 2 and the flexible display panel 1 are bonded, the second jig 4 squeezes the carrier plate 32 as it rolls from the bonding starting end to the bonding ending end. Because the depth and width of the groove 8 are the same as the thickness and width of the carrier plate 32, respectively, the second jig 4 squeezes the carrier plate 32 so that the carrier plate 32 fills the groove 8, achieving a planar rolling bond between the flexible display panel 1 and the curved cover plate 2. When the second jig 4 rolls away from the current bonding position, the carrier plate 32 at this position will arch up again, that is, during the rolling bonding process of the second jig 4, each bonding position is flat, which can ensure the bonding effect and reduce the occurrence of defects such as bubbles.

[0056] In this embodiment, the thickness of the carrier plate 32 is 3 mm, and the depth of the groove 8 is the same as the thickness of the carrier plate 32. Accordingly, the depth of the groove 8 is also 3 mm. It should be noted that this embodiment provides only an example for the thickness of the carrier plate 32 and the depth of the groove 8, and does not limit the thickness of the carrier plate 32 and the depth of the groove 8 to 3 mm. In actual production, those skilled in the art may design the thickness of the carrier plate 32 and the depth of the groove 8 based on actual conditions, as long as the thickness of the carrier plate 32 and the depth of the groove 8 are equal.

[0057] In one embodiment, a buffer spring 9 is included between the carrier plate 32 and the carrier platform 31. The buffer spring 9 is located within the hollow portion 33, with one end connected to the carrier plate 32 and the other end connected to the carrier platform 31. The provision of the buffer spring 9 ensures a more uniform pressure distribution during lamination, reducing the incidence of defects such as bubbles or cracks. In this embodiment, three buffer springs 9 are provided between the carrier plate 32 and the carrier platform 31. The three buffer springs 9 are evenly distributed and act as a buffer, making the pressure distribution during lamination more uniform. They also assist in resetting the carrier plate 32 and the curved screen after lamination is completed. In other embodiments, the number of buffer springs 9 may be more or less than three, but should be at least two, and multiple buffer springs 9 should be evenly distributed between the carrier plate 32 and the carrier platform 31 to ensure a uniform pressure distribution during lamination.

[0058] In one embodiment, the carrier plate 32 loads and unloads the curved cover plate 2 using a suction nozzle, and the second jig 4 rolls and grasps the flexible display panel. Specifically, the second jig 4 may include a suction nozzle to absorb the flexible display panel 1. The second jig 4 may also grasp the flexible display panel by gluing, which is not limited in this embodiment.

[0059] In one embodiment, Figure 3b As shown, the curved screen bonding jig also includes an image acquisition device 10 located between the first jig 3 and the second jig 4. The image acquisition device 10 is used to capture position images of the first jig 3 and the second jig 4, and to determine whether the curved cover 2 and the flexible display panel 1 are correctly aligned by aligning the centers of the four corners. This alignment operation is performed before the bonding operation. Specifically, the image acquisition device 10 detects the outer contour line or multiple first marks of the flexible display panel 1 located on the second fixture 4, and determines a first figure based on the outer contour line or multiple first marks; compares the obtained first figure with the first set figure to obtain a first motion control amount, and controls the movement of the flexible display panel 1 according to the obtained first motion control amount to achieve the alignment of the flexible display panel 1; the graphic acquisition device 10 detects the outer contour line or multiple second marks of the curved cover plate 2 located on the carrier plate 32, and determines a second figure based on the outer contour line or multiple second marks of the curved cover plate 2, compares the obtained second figure with the second preset figure to obtain a second motion control amount, and controls the movement of the curved cover plate 2 according to the obtained second motion control amount to achieve the alignment of the curved cover plate 2.

[0060] In some embodiments of the present invention, during the alignment process, the position and status of the flexible display panel 1 and the curved cover plate 2 are detected, and the movement of the flexible display panel 1 is controlled based on the first motion control amount, and the movement of the curved cover plate 2 is controlled based on the second motion control amount, so that the center of the flexible display panel 1 and the center of the curved cover plate 2 are aligned.

[0061] In other embodiments, before the flexible display panel 1 and the curved cover plate 2 are aligned, the curved cover plate 2 may already be located at the position where the flexible display panel 1 and the curved cover plate 2 will be located after the alignment. In this case, only moving the flexible display panel 1 can achieve the alignment of the flexible display panel 1 and the curved cover plate 2. Alternatively, before the flexible display panel 1 and the curved cover plate 2 are aligned, the flexible display panel 1 may already be located at the position where the flexible display panel 1 and the curved cover plate 2 will be located after the alignment. In this case, only moving the first jig 3 can achieve the alignment of the flexible display panel 1 and the curved cover plate 2.

[0062] Another embodiment of the present invention provides a method for laminating a curved screen, wherein the flexible panel 1 and the curved cover plate 2 are laminated using the curved screen laminating jig in the above embodiment. Figure 4 As shown, the method includes:

[0063] S1, such as Figure 3a As shown, the curved cover plate 2 is loaded onto the first jig 1 and fixed to the side of the carrier plate 32 close to the second jig 4 by a fixing assembly;

[0064] S2, the second fixture 4 rolls and grabs the flexible display panel 1;

[0065] S3, such as Figure 3b As shown, loosen the fixing assembly and align the flexible display panel 1 and the curved cover plate 2;

[0066] S4, such as Figure 3c-3d As shown, the curved cover plate 2 is fixed by a fixing assembly, and the second jig 4 is gradually rolled along the arc of the carrier plate 32 from the bonding start end of the first jig 3 to the bonding end end of the first jig 3, pressing the flexible display panel 1 to the curved cover plate 2, so that the flexible display panel 1 and the curved cover plate 2 are bonded;

[0067] S5, such as Figure 3e As shown, the curved cover returns to its original state and the bonding is completed.

[0068] In one embodiment, Figure 5 As shown, S3, aligning the flexible display panel 1 and the curved cover plate 2 may include:

[0069] S31, the image acquisition device 10 detects an outer contour line or a plurality of first marks of the flexible display panel 1 located on the second fixture 4, and determines a first graphic according to the outer contour line or the plurality of first marks;

[0070] S32, comparing the obtained first pattern with the first set pattern to obtain a first motion control amount, and controlling the movement of the flexible display panel 1 according to the obtained first motion control amount to achieve alignment of the flexible display panel 1;

[0071] S33, the pattern acquisition device 10 detects the outer contour line or multiple second marks of the curved cover plate 2 located on the carrier plate 32, and determines a second pattern based on the outer contour line or multiple second marks of the curved cover plate 2;

[0072] S34, comparing the obtained second pattern with the second preset pattern to obtain a second motion control amount, and controlling the movement of the curved cover plate 2 according to the obtained second motion control amount to achieve alignment of the curved cover plate 2;

[0073] After the flexible display panel 1 moves based on the first motion control amount and / or the curved cover plate 2 moves based on the second motion control amount, the center of the flexible display panel 1 is aligned with the center of the curved cover plate 2.

[0074] Illustratively, the shape of the first set pattern is the same as the shape of the first pattern, and the first set pattern differs from the first pattern in at least one of position or state (e.g., degree of inclination). The shape of the second set pattern is the same as the shape of the second pattern, and the second set pattern differs from the second pattern in at least one of position or state (e.g., degree of inclination).

[0075] Based on this, the first motion control amount may include a rotational motion control amount and / or a translational motion control amount, and the second motion control amount may include a rotational motion control amount and / or a translational motion control amount.

[0076] “Comparing the first figure with the first set figure” may, for example, be comparing the midpoint of the first figure with the midpoint of the first set figure, or may be comparing the tilt of the first figure with the tilt of the first set figure.

[0077] “Comparing the second figure with the second set figure” may, for example, be comparing the position of the midpoint of the second figure with the position of the midpoint of the second set figure, or may be comparing the degree of inclination of the second figure with the degree of inclination of the second set figure.

[0078] In some embodiments of the present invention, the outer contour line or multiple first marks of the flexible display panel 1, and the outer contour line or multiple second marks 304 of the curved cover plate 2 can be detected by at least one image acquisition device 50. The present invention does not limit the number of image acquisition devices 50, as long as the outer contour line or multiple first marks of the flexible display panel 10, and the outer contour line or multiple second marks 304 of the jig 30 can be detected.

[0079] Exemplarily, the image acquisition device 10 may be a CCD (charge coupled device) camera.

[0080] In some embodiments of the present invention, during the process of "aligning the flexible display panel 1 and the curved cover plate 2", the positions and states of the flexible display panel 1 and the curved cover plate 2 are detected, and the movement of the flexible display panel 1 is controlled based on the first motion control amount, and the movement of the curved cover plate 2 is controlled based on the second motion control amount, so that the center of the flexible display panel 1 and the center of the curved cover plate 2 are aligned.

[0081] In other embodiments, before the flexible display panel 1 and the curved cover plate 2 are aligned, the curved cover plate 2 may already be located at the position where the flexible display panel 1 and the curved cover plate will be aligned. In this case, the alignment of the flexible display panel 1 and the curved cover plate 2 can be achieved by simply moving the flexible display panel 1. Figure 6 As shown, S3, aligning the flexible display panel 1 and the curved cover plate 2 may include:

[0082] S31, the image acquisition device 10 detects an outer contour line or a plurality of first marks of the flexible display panel 1 located on the second fixture 4, and determines a first graphic according to the outer contour line or the plurality of first marks;

[0083] S32 , comparing the obtained first graphic with the first set graphic to obtain a first motion control amount, and controlling the movement of the flexible display panel 1 according to the obtained first motion control amount to achieve alignment of the flexible display panel 1 .

[0084] The first motion control amount may include a rotational motion control amount and / or a translational motion control amount.

[0085] In this way, after the flexible display panel 1 moves based on the first motion control amount, the center of the flexible display panel 1 is aligned with the center of the curved cover plate 2 .

[0086] In some other embodiments, before the flexible display panel 1 and the curved cover plate 2 are aligned, the flexible display panel 1 may already be at the position where the flexible display panel 1 and the curved cover plate 2 will be aligned. In this case, only the curved cover plate 2 needs to be moved to achieve the alignment of the flexible display panel 1 and the curved cover plate 2. Figure 7 As shown, S3, aligning the flexible display panel 1 and the curved cover plate 2 may include:

[0087] S33, the pattern acquisition device 10 detects the outer contour line or multiple second marks of the curved cover plate 2 located on the carrier plate 32, and determines a second pattern based on the outer contour line or multiple second marks of the curved cover plate 2;

[0088] S34 , comparing the obtained second graphic with the second preset graphic to obtain a second motion control amount, and controlling the movement of the curved cover plate 2 according to the obtained second motion control amount to achieve alignment of the curved cover plate 2 .

[0089] The second motion control amount may include a rotational motion control amount and / or a translational motion control amount.

[0090] In this way, after the curved cover plate 2 moves based on the second motion control amount, the center of the flexible display panel 1 is aligned with the center of the curved cover plate 2 .

[0091] An embodiment of the present invention provides a curved screen bonding jig and bonding method, which utilizes a first jig and a second jig to achieve bonding between a flexible display panel 1 and a curved cover plate. A groove 8 having a depth equal to the thickness of a carrier plate 32 is provided on a carrier platform 31 of a first jig 3. During the bonding process, the second jig 4 squeezes the carrier plate 32 so that the carrier plate 32 fills the groove 8, thereby achieving planar rolling bonding between the flexible display panel 1 and the curved cover plate 2. When the second jig 4 rolls away from the current bonding position, the carrier plate 32 at that position will arch up again, that is, during the rolling bonding process of the second jig 4, each bonding position is flat, which can ensure the bonding effect and effectively avoid the bubble problem caused by the early contact between the flexible display panel 1 and the curved cover plate 2 in the traditional press bonding method; in addition, the curved screen bonding jig provided by the present invention does not require the use of a carrier film for profiling, and can be bonded in an atmospheric environment, which can reduce production costs, simplify operation, and improve production efficiency; a buffer spring 9 is provided between the carrier plate 32 and the carrier platform 31 of the first jig 3, and the buffer spring 9 can ensure that the pressure distribution during bonding is more uniform, reducing the incidence of defects such as bubbles or cracks. The curved screen bonding jig provided by the embodiment of the present invention is also suitable for the bonding process of flexible film materials such as heat dissipation films, and has the advantages of simple structure, high bonding yield, low production cost, and a wide range of applications.

[0092] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A curved screen laminating jig for laminating a flexible display panel and a curved cover plate, characterized in that: include: A first jig, used to support the curved cover plate, the first jig comprising a lamination start end and a lamination end end; a second jig, disposed opposite to the first jig, for grasping the flexible display panel and rolling it along the laminating start end of the first jig to the laminating end end of the first jig, gradually laminating the flexible display panel to the curved cover plate, so that the flexible display panel and the curved cover plate are laminated; The first jig includes a carrier and a carrier plate located on the carrier, the carrier plate being arc-shaped and arching toward the second jig, the curved cover plate being fixed to a side surface of the carrier plate close to the second jig by a fixing assembly, and the curvature of the carrier plate is the same as that of the curved cover plate; The second fixture is an arc-shaped structure protruding toward the first fixture and corresponding to the shape of the carrier plate; A groove is provided on a surface of one side of the carrier close to the carrier plate, and the groove has a depth that is the same as the thickness of the carrier plate. The second jig squeezes the carrier plate while rolling from the lamination starting end to the lamination ending end, so that the carrier plate fills the groove as the second jig moves, so that the contact position between the flexible display panel and the curved cover plate is flat.

2. The curved screen laminating jig according to claim 1, characterized in that: The fixing assembly includes a first positioning clamp and a second positioning clamp; The first positioning clamp is located at the bonding starting end of the first jig, and one end of the curved cover plate is fixed to the bonding starting end of the first jig through the first positioning clamp; The second positioning clamp is located at the fitting end of the first fixture, and the other end of the curved cover plate is connected and fixed to the second positioning clamp; The second positioning clamp can drive the curved cover plate to move in a direction away from the first positioning clamp as the second fixture rolls.

3. The curved screen laminating jig according to claim 2, characterized in that: The end of the second positioning clamp facing away from the curved cover plate includes a return spring, and the return spring is configured to restore the curved cover plate to its initial shape after the lamination work is completed.

4. The curved screen laminating jig according to claim 1, characterized in that: The thickness of the carrier plate is 3 mm.

5. The curved screen laminating jig according to claim 1, characterized in that: A buffer spring is provided between the carrier plate and the platform, wherein one end of the buffer spring is connected to the carrier plate, and the other end is connected to the platform.

6. The curved screen laminating jig according to claim 1, characterized in that: The material of the carrier plate is flexible material.

7. The curved screen laminating jig according to claim 1, characterized in that: The curved screen laminating jig further includes an image acquisition device for acquiring position images of the first jig and the second jig, and the image acquisition device is located between the first jig and the second jig.

8. A method for laminating a curved screen using the curved screen laminating jig according to any one of claims 1 to 7, characterized in that: For achieving bonding between a flexible display panel and a curved cover plate, the method comprises: Feeding the curved cover plate onto the first jig and fixing it to the side of the carrier plate close to the second jig via a fixing assembly; The second fixture rolls and grabs the flexible display panel; Aligning the flexible display panel and the curved cover plate; The second jig rolls along the arc of the carrier plate from the lamination start end of the first jig to the lamination end end of the first jig, pressing the flexible display panel to the curved cover plate, so that the flexible display panel and the curved cover plate are laminated; The curved cover returns to its original state and the fitting is completed.

9. The laminating method according to claim 8, characterized in that: Aligning the flexible display panel and the curved cover plate includes: detecting an outer contour line or a plurality of first marks of the flexible display panel, and determining a first graphic according to the outer contour line or the plurality of first marks of the flexible display panel; Comparing the first graph with a first set graph to obtain a first motion control amount; and controlling the movement of the flexible display panel according to the first motion control amount; and / or, detecting an outer contour line or a plurality of second marks of the curved cover plate, and determining a second graphic according to the outer contour line or the plurality of second marks of the curved cover plate; Comparing the second graph with a second set graph to obtain a second motion control amount; controlling the motion of the curved cover plate according to the second motion control amount; Wherein, after the flexible display panel moves based on the first motion control amount and / or the curved cover moves based on the second motion control amount, the center of the flexible display panel is aligned with the center of the curved cover.

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