Rolling film pressing device, film material laminating equipment and film material laminating method

Abstract

The present invention discloses a rolling film pressing device, a film material laminating device and a film material laminating method. The rolling film pressing device includes: a roller bracket, a laminating roller, a supporting mechanism and a moving mechanism. The laminating roller is connected to the roller bracket, and the laminating roller has a supporting end for supporting the film material; the supporting mechanism has two supporting sites for supporting the film material, and the two supporting sites are spaced apart and arranged on the same side of the laminating roller; the moving mechanism is used to drive the roller bracket and the supporting mechanism to move together. When the rolling film pressing device is applied to laminating the film material, it can better eliminate the pulling stress generated during the laminating process of the film material, thereby weakening or eliminating the curling of the device after lamination.

Description

Technical Field

[0001] The present invention relates to the technical field of film laminating, and particularly to a rolling film pressing device, a film laminating apparatus, and a film laminating method. Background Art

[0002] There are many pixel points in a display panel. Through the arrangement and distribution of the colors of these pixel points, very rich picture information can be displayed, and it has become an indispensable part of current life. The pixel points themselves are relatively vulnerable to the erosion of the natural water and oxygen environment and age. Therefore, in the actual display panel manufacturing process line, not only the pixel point part of the display panel needs to be manufactured, but also functional films, including a water barrier film, a polarizer, a support film, and a temporary protective film, etc., need to be attached in subsequent multiple process sections. The process of attaching the film requires the use of a corresponding type of film laminating device, which usually consists of components such as a loading film cassette, a film carrying platform, a release film removing mechanism, a substrate platform, and a cleaning mechanism.

[0003] When using the above film laminating device for film lamination, it usually includes the following steps. First, the film needs to be placed in the loading film cassette, and then a suction cup or other tools are used to suck the film in the loading film cassette and move it above the film carrying platform, and the film is placed on the film carrying platform; then the release film removing mechanism is used to remove the original release film on the film; at the same time, the display panel is transported to the substrate platform; after the substrate platform and the film carrying platform are aligned, film lamination starts; finally, a rubber roller is used to roll-press from one side of the film to the other side, and at the same time, the film carrying platform is removed to complete the film lamination process. Although such a film lamination method can achieve automatic film lamination, there are still some problems that affect the product yield. Specifically, in the process of attaching the film to the display panel, the film carrying platform slides along the film plane to expose the film, and the pressing roller presses the exposed part of the film upward onto the display panel, and the pressing roller and the film carrying platform move synchronously to transfer the entire film from the film carrying platform to the display panel without bubbles and wrinkles. After attaching the film to the surface of the flexible display panel using this film lamination method, the prepared flexible display device often curls, thereby damaging the device. Summary of the Invention

[0004] Based on this, it is necessary to provide a rolling film pressing device that can weaken or eliminate the curling of the device after lamination. Further, a corresponding film laminating apparatus and a film laminating method are provided.

[0005] According to an embodiment of the present invention, a rolling film pressing device includes:

[0006] A roller bracket;

[0007] A laminating roller, the laminating roller is connected to the roller bracket, and the laminating roller has a supporting end for supporting the film;

[0008] A support mechanism, the support mechanism having two support sites for supporting the film material, and the two support sites being spaced apart on the same side of the laminating roller;

[0009] A moving mechanism, the moving mechanism being used to drive the roller bracket and the support mechanism to move synchronously.

[0010] In one embodiment, the distance between the two support sites ≥ 40 mm; and / or

[0011] The distance between the support site close to the laminating roller and the support end of the laminating roller ≥ 5 mm; and / or

[0012] The two support sites and the support site of the laminating roller are located in the same plane.

[0013] In one embodiment, the distance between the two support sites ≤ 200 mm; and / or

[0014] The distance between the support site close to the laminating roller and the support end of the laminating roller ≤ 100 mm.

[0015] In one embodiment, the support mechanism includes:

[0016] A first support roller and a second support roller, the first support roller and the second support roller are both rotatably connected to the roller bracket, the first support roller is arranged between the laminating roller and the second support roller, the first support roller is spaced apart from the laminating roller, and the support end of the first support roller for tangentially supporting the film material and the support end of the second support roller for tangentially supporting the film material are respectively the two support sites in the support mechanism.

[0017] In one embodiment, the support mechanism further includes:

[0018] A transmission belt, the transmission belt is sleeved on the first support roller and the second support roller, and the first support roller and the second support roller are drivingly connected through the transmission belt.

[0019] In one embodiment, the diameter of the laminating roller is 20 mm to 100 mm; and / or

[0020] The diameter of the first support roller is 20 mm to 100 mm; and / or

[0021] The diameter of the second support roller is 20 mm to 100 mm.

[0022] Furthermore, a film material laminating device, which includes:

[0023] A film - carrying platform for carrying a film material.

[0024] The rolling film - pressing device according to any of the above - mentioned embodiments, the rolling film - pressing device is arranged at the end of the film - carrying platform, the supporting mechanism is arranged close to the film - carrying platform and is used to support the film material separated and moved from the film - carrying platform to transport the film material to the laminating roller, and the laminating roller is used to press the film material onto the surface of the workpiece to be film - laminated.

[0025] In one of the embodiments, it further includes:

[0026] A positioning block, the positioning block is arranged on the side of the laminating roller away from the film - carrying platform, the positioning block is used to support the film material moving out from the laminating roller, the distance between the positioning block and the film - carrying platform is adjustable, and the minimum adjustable distance between the positioning block and the film - carrying platform is greater than the maximum distance between the laminating roller and the supporting mechanism.

[0027] In one of the embodiments, the minimum adjustable distance between the positioning block and the film - carrying platform is ≥120 mm; and / or

[0028] The carrying surface of the film - carrying platform and the carrying surface of the positioning block are in the same plane.

[0029] Furthermore, the present invention also provides an application of the film - material laminating device according to any of the above - mentioned embodiments in a flexible display panel.

[0030] Specifically, a film - material laminating method, which uses the film - material laminating device according to any of the above - mentioned embodiments to laminate a film material onto the surface of a flexible display panel, includes the following steps:

[0031] Set the film material on the film - carrying platform, adjust the position of the film - carrying platform so that the starting end of the film material is in alignment contact with the starting end of the workpiece to be film - laminated, and make the film material inclined with respect to the workpiece to be film - laminated. When the film material is inclined, the starting end of the film material is the end facing the supporting mechanism and close to the workpiece to be film - laminated.

[0032] Make the film material move in sequence from the starting end of the film material to the opposite terminal end direction and be exposed outside the film - carrying platform, and control the supporting mechanism and the laminating roller to support the film material exposed outside the film - carrying platform in sequence.

[0033] Control the supporting mechanism and the laminating roller to move synchronously along the direction from the starting end to the terminal end of the film material to press the film material onto the surface of the workpiece to be film - laminated in sequence.

[0034] Among them, during the process of controlling the movement of the support mechanism and the fitting roller, the film-carrying platform is controlled to move along the surface of the film material from the starting end to the terminal end of the film material.

[0035] For traditional film pasting equipment and methods, during the actual film pasting process, the pressed part of the film material is simultaneously subjected to the adsorption force of the film-carrying platform, the slip pulling force when separating from the film-carrying platform, and the pressure when pressed onto the display panel by the rubber roller. After synthesis, a large pulling stress along the surface of the film material will be generated on the film material itself. The pulling stress will remain at the interface between the film material and the substrate, and this part of the stress will act on the entire flexible display panel after the flexible display panel is peeled off from the rigid carrier substrate, causing the flexible display panel to warp.

[0036] For the above-mentioned rolling film pressing device, a first support roller and a second support roller are additionally arranged on one side of the fitting roller. During the actual application of film material fitting, there is a gap between the fitting roller and the first support roller. The film material in the gap section is supported by the fitting roller and the first support roller respectively, and is not subjected to the adsorption force of the film-carrying platform. Therefore, the film material pressed onto the panel basically does not generate pulling stress. Although the relative movement of slip separation between the film-carrying platform and the film material has a slip pulling force on the surface of the film material, since the second support roller only plays the role of transporting and supporting the film material and does not apply a pressing force to the film material, basically no pulling stress is generated on the part of the film material before the second support roller. Therefore, the above-mentioned rolling film pressing device can better eliminate the pulling stress generated during the fitting process of the film material, and thus weaken or eliminate the curling of the device after fitting. Description of the Drawings

[0037] Figure 1 is a schematic diagram of the specific process of the traditional film pasting method;

[0038] Figure 2 is a surface topography diagram of the curling of the flexible display panel after pasting the film material by the traditional film pasting method;

[0039] Figure 3 is a schematic diagram of the rolling film pressing device;

[0040] Figure 4 is a schematic diagram of the film material fitting equipment;

[0041] Figure 5 is a schematic diagram of the specific process of the film material fitting method;

[0042] Figure 6 is for Figure 4 the surface topography diagram of the flexible display panel pasted with the film material by the film material fitting method;

[0043] Among them, the meanings of the reference numerals and their specific details are as follows:

[0044] 111. Rubber roller; 120. Film carrier platform; 130. Film material; 140. Display panel; 150. Substrate platform; 211. Laminating roller; 212. First support roller; 213. Second support roller; 214. Roller bracket; 215. Moving mechanism; 216. Transmission belt; 217. Laminating roller lifting cylinder; 218. Support mechanism lifting cylinder; 220. Film carrier platform; 221. Positioning block; 230. Film material; 240. Display panel; 250. Substrate platform. Detailed implementation manners

[0045] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the present invention belongs. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items. The term "plurality" used herein includes two and more than two items. The term "above a certain number" should be understood as a range including the certain number and greater than the certain number.

[0047] Traditional film laminating equipment was originally designed to laminate film materials onto rigid substrates, such as traditional rigid display panels with glass as the substrate. However, when applied to flexible display panels, it will cause the surface of the flexible display panel to curl, so it is difficult to be applicable to soft flexible display panels. The present invention has made corresponding improvements to the traditional film laminating equipment to overcome the above problem of curling the surface of the flexible display panel.

[0048] To facilitate the understanding of the specific differences between the traditional film laminating equipment and the rolling film pressing device of the present invention during the laminating process, please first refer to Figure 1 , which shows a specific schematic diagram of a traditional film laminating method. Among them, the rubber roller 111 is arranged on one side of the film carrier platform 120, and this side is the right side according to the orientation in the figure. The film material 130 is arranged on the film carrier platform 120. The film carrier platform 120 slides to the left relative to the film material 130, and a part of the film material 130 is exposed. The rubber roller 111 presses this part of the film material 130 onto the display panel 140 located above, and the display panel 140 is adsorbed on the substrate platform 150. As Figure 1As shown in [figure], at the junction of the rightmost side of the film carrier platform 120 and the film material 130, the film material 130 is mainly affected by three forces, namely, the upward pressing force F1 of the rubber roller 111 on the film material 130, the adsorption force F2 of the film carrier platform 120 on the film material 130 in the lower right direction, and the pulling force F3 of the film carrier platform 120 on the surface of the film material 130 in the lower left direction when the film carrier platform 120 slides relative to the film material 130. Under the combined action of these three forces, after being pressed onto the surface of the display panel 140, a large pulling stress will be generated at the interface between the film material 130 and the display panel 140. This pulling stress accumulates at the interface between the film material 130 and the display panel 140 and will force the film material 130 and the display panel 140 to undergo a curling deformation as a whole. Specifically, please refer to Figure 2 The surface topography diagram of the flexible display panel after attaching the film material by the above-mentioned film attaching method shown.

[0049] The present invention provides a rolling film pressing device. According to an embodiment of the present invention, it includes: a roller bracket, a laminating roller, a support mechanism, and a moving mechanism. The laminating roller is connected to the roller bracket, and the laminating roller has a support end for supporting the film material; the support mechanism has two support sites for supporting the film material, and the two support sites are spaced apart on the same side of the laminating roller; the moving mechanism is used to drive the roller bracket and the support mechanism to move synchronously.

[0050] In one specific example, the distance between the two support sites ≥ 40 mm.

[0051] In one specific example, the distance between the support site close to the laminating roller and the support end of the laminating roller ≥ 5 mm. Further, the distance between the support site close to the laminating roller and the support end of the laminating roller ≥ 40 mm.

[0052] In one specific example, the two support sites and the support site of the laminating roller are located in the same plane.

[0053] In one specific example, the distance between the two support sites ≤ 200 mm.

[0054] In one specific example, the distance between the support site close to the laminating roller and the support end of the laminating roller ≤ 100 mm.

[0055] In one specific example, the support mechanism includes a first support roller and a second support roller; the first support roller and the second support roller are both rotatably connected to the roller bracket; the first support roller and the second support roller both have a support end for supporting the film material, and the support end of the first support roller and the support end of the second support roller are respectively the two support sites in the support mechanism.

[0056] For traditional film laminating equipment and methods, during the actual film laminating process, the area of the film material being pressed is simultaneously subjected to the adsorption force of the film carrier platform, the sliding pulling force during separation from the film carrier platform, and the pressure when being pressed onto the display panel by the rubber roller. After synthesis, a relatively large pulling stress along the surface of the film material will be generated on the film material itself. The pulling stress will remain at the interface between the film material and the substrate, and this part of the stress will act on the entire flexible display panel after the flexible display panel is peeled off from the rigid carrier substrate, causing the flexible display panel to warp. The above-mentioned rolling film pressing device adopts a support mechanism additionally arranged on one side of the laminating roller. Specifically, the support mechanism can be a first support roller and a second support roller. During the actual application of film material lamination, there is a gap between the laminating roller and the first support roller. The film material in the gap section is supported by the laminating roller and the first support roller respectively and is not subjected to the adsorption force of the film carrier platform. Therefore, the film material pressed onto the panel basically does not generate pulling stress. Although the relative sliding separation movement between the film carrier platform and the film material has a sliding pulling force on the surface of the film material, since the second support roller only plays the role of transporting and supporting the film material and does not apply a pressing force to the film material, basically no pulling stress is generated on the part of the film material before the second support roller. Therefore, the above-mentioned rolling film pressing device can better eliminate the pulling stress generated during the film lamination process, and thus weaken or eliminate the curling of the device after lamination. It can be understood that for the convenience of explaining its actual working conditions, the first support roller and the second support roller are introduced in the above specific example, but the support mechanism also has other realizable forms, such as a track, and its surface can also be used to support the film material to be laminated.

[0057] To facilitate understanding of the above-mentioned rolling film pressing device 210 provided by the present invention, please refer to Figure 3 simultaneously, a drum film pressing device, which includes a roller bracket, a laminating roller 211, a first support roller 212, a second support roller 213, and a moving mechanism 215. Among them, the first support roller 212 and the second support roller 213 jointly constitute the support mechanism.

[0058] Among them, the laminating roller 211 is rotatably connected to the roller bracket 214; the first support roller 212 is rotatably connected to the roller bracket 214, and the first support roller 212 is arranged on one side of the laminating roller 211 and is spaced from the laminating roller 211, according to Figure 3 the orientation in Figure 3In the orientation shown, the top end of each roller is a support end, and the side-by-side arrangement of the support ends means that the top ends of each roller are on the same plane.

[0059] The laminating roller 211 and the second supporting roller 213 are spaced apart, and the reserved gap between the two is used to separate the film material 230 on both sides of the second supporting roller 213. The film material 230 on the side of the second supporting roller 213 close to the laminating roller 211 will not be subjected to the vacuum adsorption force of the film carrier platform 220. Therefore, when the laminating roller 211 presses the film material 230, the pressed film material 230 will basically not have a tensile stress. In one specific example, the gap between the laminating roller 211 and the first supporting roller 212 is 1 cm to 3 cm. Controlling the gap within this range can effectively eliminate the stress of the film material 230 at the pressed part while keeping the shape of the film material 230 unchanged.

[0060] In one specific example, the first supporting roller 212 and the second supporting roller 213 move synchronously, which can reduce the recessed gap between the two rollers as much as possible and avoid the problem of instability of the film material 230 during the attachment process.

[0061] Furthermore, in one preferred specific example, the support mechanism further includes a transmission belt 216, which is sleeved on the first support roller 212 and the second support roller 213, and the first support roller 212 and the second support roller 213 are connected by the transmission belt 216. The transmission belt 216 can ensure that the two rollers keep moving synchronously, and the concave gap between the two rollers can become a flat surface, which is more conducive to keeping the film material 230 stable during attachment and avoiding wrinkles or bubbles. Specifically, the transmission belt 216 can be a belt.

[0062] The roller bracket 214 may be an integral bracket or a two-part bracket respectively connected to the laminating roller 211 and the supporting mechanism. Figure 3 As shown, the roller bracket 214 includes two parts, one of which is connected to the laminating roller 211 , and the other is connected to the entire supporting mechanism composed of the first supporting roller 212 , the second supporting roller 213 and the transmission belt 216 .

[0063] Furthermore, the roller bracket 214 includes two parts. The part connected to the laminating roller 211 is also connected to a laminating roller lifting cylinder 217, which is used to adjust the height of the laminating roller 211. The part connected to the supporting mechanism is also connected to a supporting mechanism lifting cylinder 218, which is used to adjust the height of the supporting mechanism as a whole. By adjusting the laminating roller lifting cylinder 217 and the supporting mechanism lifting cylinder 218, the laminating roller 211 and the supporting mechanism can be respectively controlled to be close to the film to be laminated.

[0064] It can be understood that the fitting roller lifting cylinder 217 and the support mechanism lifting cylinder 218 are also respectively connected to the moving mechanism 215, so as to facilitate the moving mechanism 215 to drive the fitting roller 211 and the entire support mechanism to move.

[0065] In one specific example, optionally, the diameter of the fitting roller 211 is 20 mm to 100 mm. For example, the diameter of the fitting roller 211 is 20 mm to 30 mm, 40 mm to 60 mm, or 70 mm to 90 mm. Optionally, the diameter of the first support roller 212 is 20 mm to 100 mm. For example, the diameter of the first support roller 212 is 20 mm to 30 mm, 40 mm to 60 mm, or 70 mm to 90 mm. Optionally, the diameter of the second support roller 213 is 20 mm to 100 mm. For example, the diameter of the second support roller 213 is 20 mm to 30 mm, 40 mm to 60 mm, or 70 mm to 90 mm. Controlling the rollers within this range is more suitable for attaching the film material 230 to a large-size flexible display screen. For example, for a 31-inch display screen, the size of the film material 230 used is usually 688.48 mm × 400.48 mm.

[0066] In one specific example, the first support roller 212 and the second support roller 213 have the same diameter. Controlling the first support roller 212 and the second support roller 213 to have the same diameter can make the two rollers more stable during the traditional process and reduce the deformation that may be caused to the surface of the film material 230 due to the additional rollers.

[0067] Furthermore, the present invention also provides a film material attaching device. For ease of understanding, please refer to Figure 4 , a film material attaching device, which includes a film-carrying platform 220 and a rolling film-pressing device 210 according to any one of the above embodiments. Among them, the film-carrying platform 220 is used to carry the film material 230, the support mechanism is arranged close to the film-carrying platform 220, and is used to support the film material 230 that slides and separates from the film-carrying platform 220 and transport it to the fitting roller 211, and the fitting roller 211 is used to press the film material 230 onto the workpiece to be pasted with the film.

[0068] Among them, the rolling film-pressing device 210 is arranged at the end of the film-carrying platform 220. Optionally, the rolling film-pressing device 210 can abut against the end of the film-carrying platform 220, or can be arranged at an interval from the film-carrying platform 220 at one end of the film-carrying platform 220.

[0069] In one specific example, it further includes a positioning block 221 arranged on one side of the film-carrying platform 220. The positioning block 221 is used to support the film material that moves out from the fitting roller 211.

[0070] Among them, the distance between the positioning block 221 and the film-carrying platform 220 is adjustable, and the maximum adjustable distance between the positioning block 221 and the film-carrying platform 220 is greater than the maximum distance between the laminating roller 211 and the first supporting roller 212. With such a setting, the function of the positioning block 221 is to limit the laminating roller 211, the first supporting roller 212 and the second supporting roller 213. Specifically, before rolling the film material 230, the positioning block 221 can be close to the film-carrying platform 220 to limit the laminating roller 211, the first supporting roller 212 and the second supporting roller 213 from extending into the side of the film-carrying platform 220. When it is necessary to roll the film material 230, the distance between the positioning block 221 and the film-carrying platform 220 is adjusted so that the laminating roller 211, the first supporting roller 212 and the second supporting roller 213 extend into the side of the film-carrying platform 220, and the film material 230 is pressed onto the substrate to be laminated.

[0071] In one specific example, the maximum adjustable distance between the positioning block 221 and the film-carrying platform 220 ≥ 120 mm.

[0072] In one specific example, the bearing surface of the film-carrying platform 220 and the bearing surface of the positioning block 221 are in the same plane. Further, during the assembly and use process, the bearing surface of the film-carrying platform 220, the bearing surface of the positioning block 221, two supporting points in the rolling film device 210, and the supporting end of the laminating roller 211 are in the same plane.

[0073] Further, the present invention also provides an application of a film material laminating device in a flexible display panel.

[0074] A film material laminating method, which laminates a film material onto the surface of a flexible display panel by using the film material laminating device according to the above embodiments, includes the following steps:

[0075] Set the film material on the film-carrying platform, and adjust the position of the film-carrying platform so that the starting end of the film material is in alignment contact with the starting end of the workpiece to be laminated, and the film material is inclined relative to the workpiece to be laminated. When the film material is inclined, the starting end of the film material is the end facing the supporting mechanism and close to the workpiece to be laminated;

[0076] Move the film material in sequence from the starting end to the opposite terminal end direction and expose it outside the film-carrying platform, and control the supporting mechanism and the laminating roller to support the film material exposed outside the film-carrying platform in sequence;

[0077] Control the supporting mechanism and the laminating roller to move synchronously along the direction from the starting end to the terminal end of the film material to press the film material onto the surface of the workpiece to be laminated in sequence;

[0078] During the process of controlling the movement of the support mechanism and the fitting roller, the film carrier platform is controlled to move along the surface of the film material from the starting end to the ending end of the film material. Optionally, the film carrier platform is controlled to slide along the surface of the film material from the starting end to the ending end of the film material.

[0079] Further, in one specific example, during the process of gradually aligning and pressing the film material onto the surface of the workpiece to be film - attached, the film carrier platform and the support mechanism are controlled to be spaced apart.

[0080] Further, during the process of gradually aligning and pressing the film material onto the surface of the workpiece to be film - attached, the moving speeds of the film carrier platform and the support mechanism are controlled to be the same to keep the relative positions of the film carrier platform and the support mechanism unchanged.

[0081] In one specific example, the workpiece to be film - attached is a flexible display panel.

[0082] Specifically, a method for attaching a film material 230 uses the film material 230 attaching device according to the above - mentioned embodiment to attach the film material 230 to the surface of the flexible display panel 240, and includes the following steps:

[0083] Attach the film material 230 to the film carrier platform 220, and control the movement of the film carrier platform 220 so that the starting end of the film material 230 is in alignment contact with the starting end of the display device to be attached, and the film material 230 is inclined relative to the display panel 240.

[0084] Expose a part of the film material 230 near the starting end outside the film carrier platform 220, and control the fitting roller 211, the first support roller 212, and the second support roller 213 to all fit on this part of the film material 230.

[0085] Control the fitting roller 211, the first support roller 212, and the second support roller 213 to all move towards the ending end of the film material 230, and gradually align and press the film material 230 onto the surface of the display device; during the process of controlling the movement of the fitting roller 211, simultaneously control the film carrier platform 220 to slide along the surface of the film material 230 towards the ending end of the film material 230.

[0086] In one specific example, during the process of gradually aligning and pressing the film material 230 onto the surface of the display device, the distance between the side surface of the film carrier platform 220 and the second support roller 213 is controlled to be 1 cm to 3 cm.

[0087] In one specific example, the method of exposing a part of the film material 230 near the starting end outside the film carrier platform 220 is specifically to control the film carrier platform 220 to slide along the interface between the two relative to the film material 230 to expose a part of the film material 230 near the starting end.

[0088] It can be understood that the "starting end" in the figure is the rightmost end of the film material 230. In the actual manufacturing process, the end of the film material 230 that is first attached to the display panel 240 is the starting end. In contrast, the end of the film material 230 that is finally attached to the display panel 240 is the ending end. The ending end is usually opposite to the starting end, but the starting end does not specifically refer to a particular end of the film material 230.

[0089] For the convenience of specifically implementing the above-mentioned method for attaching the film material 230, please also refer to Figure 5 A specific process for attaching the film material 230 using the above-mentioned film material 230 attaching device includes the following steps. In Figure 5 In order to facilitate the representation of the actual manufacturing process, only the specific positions of the attaching roller 211, the first supporting roller 212, and the second supporting roller 213 are shown, and the roller brackets and other components to which the rollers are specifically connected are not shown.

[0090] Step S1, Pretreatment: Among them, the film material 230 to be attached is attached to the film carrier platform 220 by means of vacuum adsorption, and the display panel 240 is attached to the substrate platform 250 by means of vacuum adsorption. The substrate platform 250 is arranged downward so that the display panel 240 is suspended upside down on the surface of the substrate platform 250. The film carrier platform 220 is directly opposite to the substrate platform 250, so that the film material 230 and the display panel 240 are arranged in alignment. The right side of the film carrier platform 220 has a positioning block, and the positioning block 221 can adjust the distance from the film carrier platform 220 by relying on a driving cylinder. The attaching roller 211, the first supporting roller 212, and the second supporting roller 213 are installed directly below the positioning block 221. The attaching roller 211, the first supporting roller 212, and the second supporting roller 213 are lifted and lowered in the z-axis direction by relying on the roller bracket 214. The positions among the attaching roller 211, the first supporting roller 212, and the second supporting roller 213 are relatively fixed. After the distance between the positioning block 221 and the film carrier platform 220 is adjusted to a preset distance, the attaching roller 211, the first supporting roller 212, and the second supporting roller 213 jointly extend into the gap between the positioning block 221 and the film carrier platform 220 to be fixed on one side of the film carrier platform 220. After the attaching roller 211, the first supporting roller 212, and the second supporting roller 213 are jointly fixed on one side of the film carrier platform 220, there is a 1 cm gap between the end of the second supporting roller 213 closest to the film carrier platform 220 and the film carrier platform 220, and there is a 1 cm gap between the end of the attaching roller 211 closest to the first supporting roller 212 and the end of the first supporting roller 212 closest to the attaching roller 211.

[0091] Step S2, Adjust the position: After the film material 230 and the display panel 240 are placed in place, the coordinate information of the display panel 240 is collected by the on-board CCD, and the film carrier platform 220 and the substrate platform 250 are finely adjusted for precise alignment. When bonding, the film carrier platform 220 first moves vertically upward to a preset position below the substrate platform 250, and the side of the film carrier platform 220 where the bonding roller 211 is provided is tilted so that the starting end of the film material 230 is aligned and contacted with the starting end of the display panel 240.

[0092] Step S3, Attachment: Control the film carrier platform 220 to slide relative to the film material 230 to expose a part close to the starting end of the film material 230. Control the bonding roller 211, the first support roller 212, and the second support roller 213 to all move and bond to this part of the film material 230, and start from the starting end where the film material 230 contacts the display panel 240 and move along the y-axis to the end of the film material 230 (such as Figure 5 shown at the left end). During the movement of the bonding roller 211, the film carrier platform 220 retreats simultaneously to separate from the film material 230, and the separated film material 230 is pressed onto the display panel 240. When the bonding roller 211 moves to the other side opposite to the initial side, the entire film material 230 has been smoothly attached to the display panel 240.

[0093] In the above bonding method, since there is a gap between the bonding roller 211 and the first support roller 212, the film material 230 in the gap section is supported by the bonding roller 211 and the first support roller 212 respectively, and is not affected by the adsorption force of the film carrier platform 220. Therefore, the film material 230 pressed onto the panel basically does not generate tensile stress. Although the relative sliding and separation movement between the film carrier platform 220 and the film material 230 will have a sliding tensile force on the surface of the film material 230, since the second support roller 213 only plays the role of transporting and supporting the film material 230 and does not apply a pressing force to the film material 230, it makes the film material 230 in the part before the second support roller 213 also basically not generate tensile stress. Therefore, the above rolling film pressing device 210 can better eliminate the tensile stress generated by the film material 230 during the bonding process, and then weaken or eliminate the curling of the device after bonding. Please refer to Figure 6 , which shows a schematic diagram after the film material 230 is bonded to the flexible display panel 240 using the above embodiment. Obviously, after the film material 230 is bonded, the flexible display panel 240 does not show obvious curling. Therefore, using the above film material 230 bonding device and the corresponding film material 230 bonding method can effectively improve the yield of the flexible display device in the film pasting process section.

[0094] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0095] The above embodiments only express several implementation manners of the present invention, and the description is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A rolling film pressing device, characterized in that, include: Roller bracket; A laminating roller, the laminating roller is connected to the roller bracket, and the laminating roller has a supporting end for supporting the film material; A supporting mechanism, wherein the supporting mechanism has two supporting sites for supporting the film material, and the two supporting sites are arranged at intervals on the same side of the laminating roller; the distance between the two supporting sites is ≥40mm; The two support points and the support point of the laminating roller are located in the same plane; A moving mechanism is used to drive the roller bracket and the supporting mechanism to move synchronously.

2. The rolling film pressing device according to claim 1, wherein The distance between the support point close to the laminating roller and the support end of the laminating roller is ≥5mm.

3. The rolling film pressing device according to claim 1 or 2, characterized in that, The distance between the two support points is ≤ 200 mm; and / or The distance between the supporting point close to the laminating roller and the supporting end of the laminating roller is ≤100 mm.

4. The rolling film pressing device according to claim 1, characterized in that, The supporting mechanism comprises: A first supporting roller and a second supporting roller, the first supporting roller and the second supporting roller are both rotatably connected to the roller bracket, the first supporting roller is arranged between the bonding roller and the second supporting roller, the first supporting roller and the bonding roller are spaced apart, and the supporting end of the first supporting roller tangent to the film material and the supporting end of the second supporting roller tangent to the film material are respectively the two supporting positions in the supporting mechanism.

5. The rolling film pressing device according to claim 4, characterized in that, The support mechanism also includes: A transmission belt is sleeved on the first supporting roller and the second supporting roller, and the first supporting roller and the second supporting roller are connected by the transmission belt.

6. The rolling film pressing device according to claim 4 or 5, characterized in that The diameter of the laminating roller is 20 mm to 100 mm; and / or The diameter of the first support roller is 20 mm to 100 mm; and / or The diameter of the second supporting roller is 20 mm to 100 mm.

7. A film material laminating device, characterized in that, include: A film-carrying platform, the film-carrying platform is used to carry the film material; The rolling film pressing device as described in any one of claims 1 to 6 is arranged at the end of the film carrier platform, the supporting mechanism is arranged close to the film carrier platform, and is used to support the film material moved and separated from the film carrier platform so as to transfer the film material to the bonding roller, and the bonding roller is used to press the film material onto the surface of the workpiece to be bonded.

8. The film laminating device according to claim 7, wherein, Also includes: A positioning block, wherein the positioning block is arranged on the side of the bonding roller away from the film carrier platform, the positioning block is used to support the film material moved from the bonding roller, the distance between the positioning block and the film carrier platform is adjustable, and the minimum adjustable distance between the positioning block and the film carrier platform is greater than the farthest distance between the bonding roller and the supporting mechanism.

9. The film laminating device according to claim 8, characterized in that, The minimum adjustable distance between the positioning block and the film-carrying platform is ≥120 mm; and / or The carrying surface of the film carrying platform and the carrying surface of the positioning block are located in the same plane.

10. A film material laminating method, characterized in that, The film material laminating device according to any one of claims 7 to 9 is used to laminat the film material onto the surface of the workpiece to be laminatated, comprising the following steps: Place the film material on the film-carrying platform, and adjust the position of the film-carrying platform so that the starting end of the film material is in alignment contact with the starting end of the workpiece to be film-attached, and the film material is inclined with respect to the workpiece to be film-attached. When the film material is inclined, the starting end of the film material is the end facing the support mechanism and close to the workpiece to be film-attached; Move the film material in sequence from the starting end to the opposite terminal end direction and expose it outside the film-carrying platform, and control the support mechanism and the laminating roller to support the film material exposed outside the film-carrying platform in sequence; Control the support mechanism and the laminating roller to move synchronously along the direction from the starting end to the terminal end of the film material to press the film material onto the surface of the workpiece to be film-attached in sequence; Wherein, during the process of controlling the movement of the support mechanism and the laminating roller, control the film-carrying platform to move along the surface of the film material from the starting end to the terminal end.

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