CN111981007A

CN111981007A - Laminating device, laminating assembly and laminating method of curved cover plate and flexible screen

Info

Publication number: CN111981007A
Application number: CN201910438132.5A
Authority: CN
Inventors: 李敏; 唐涛; 刘方成; 贺海明
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-05-23
Filing date: 2019-05-23
Publication date: 2020-11-24

Abstract

The application provides a laminating device, a laminating assembly and a laminating method of a flexible screen and a curved cover plate. The laminating device comprises a cover plate fixing base, a moving assembly, a clamping assembly and a laminating assembly. Because the distance between the gasbag of laminating device and the curved surface apron that is fixed in on the apron fixed baseplate increases gradually from the intermediate position of gasbag to the edge of gasbag for fill filling medium in order to make the gasbag expand when giving the gasbag, the intermediate position of gasbag can promote the intermediate position of flexible screen and the intermediate position contact of apron at first, along with the gradual inflation of gasbag, other positions of gasbag can promote the intermediate position of flexible screen to the edge position gradually with the laminating of curved surface apron, make the gas between flexible screen and the curved surface apron can be extruded gradually in the laminating process, in order to avoid producing the bubble between flexible screen and the curved surface apron.

Description

Laminating device, laminating assembly and laminating method of curved cover plate and flexible screen

Technical Field

The application relates to the technical field of electronic information, in particular to a laminating device, a laminating assembly and a laminating method of a curved cover plate and a flexible screen.

Background

With the continuous development of display technology, flexible screens are more widely used, for example, in display devices such as mobile phones and flat panels, so as to realize the display of 3D forms of the display devices. Generally, a flexible screen needs to be attached to a curved cover plate, so that the display screen presents a 3D form, and thus, the display of the 3D form of the display device is realized.

In the prior art, generally, a flat pressing operation is performed to directly press a flexible screen onto a curved cover plate, but defects such as bubbles are easily generated.

Disclosure of Invention

The application provides a laminating device, a laminating assembly and a laminating method thereof, so that high-quality laminating of a curved surface cover plate and a flexible screen is realized, and defects such as bubbles are avoided.

In a first aspect, the application provides a laminating device for laminating a flexible screen and a curved cover plate. The laminating device comprises a cover plate fixing base, a clamping assembly and a laminating assembly; the cover plate fixing base is used for fixing the curved cover plate; the clamping assembly is used for clamping a bearing film bearing the flexible screen, and the flexible screen is positioned between the attaching assembly and the cover plate fixing base; the laminating assembly is used for abutting against the flexible screen so as to laminate the flexible screen with the curved cover plate; the joint assembly comprises an air bag base, an air bag and a communication pipeline, a sealed cavity is formed between the air bag and the air bag base or inside the air bag, and the communication pipeline is communicated with the sealed cavity and used for filling a filling medium into the sealed cavity so as to expand the air bag; the utility model discloses a flexible screen, including apron fixed baseplate, curved surface apron, gasbag, curved surface apron, apron fixed baseplate with when laminating subassembly relative movement to the position of laminating in advance, the gasbag is in the tensioning state, just the surface of gasbag with distance between the curved surface apron is followed the intermediate position of curved surface apron extremely the edge of curved surface apron is crescent, wherein, apron fixed baseplate with when laminating subassembly relative movement to the position of laminating in advance, flexible screen with the curved surface apron begins to contact.

In this application, because when being in the tensioning state, the gasbag with distance between the apron fixed area is followed the intermediate position of gasbag extremely the edge crescent of gasbag for fill in filling the packing medium in order to make the gasbag inflation for the gasbag, the intermediate position of gasbag can promote the intermediate position of flexible screen and the intermediate position contact of apron at first, along with the gradual inflation of gasbag, the intermediate position to the marginal position that other positions of gasbag can promote the flexible screen gradually laminates with the curved surface apron, make the gas between flexible screen and the curved surface apron of laminating in-process can be extruded gradually, in order to avoid producing the bubble between flexible screen and the curved surface apron.

In some embodiments, when the cover fixing base and the attaching assembly move relatively to the pre-attaching position, the outer surface of the airbag includes a top surface and two first side surfaces connected to the top surface, the top surface is an outward convex arc surface with a middle position higher than an edge, at least a partial area of the first side surfaces is a furled area, and the furled areas of the two opposite first side surfaces approach each other from the top surface to a direction away from the top surface.

Because two first side have from the top surface to keeping away from the area of drawing in that the top surface direction draws in to make in flexible screen and curved surface apron laminating process, the carrier band area flexible screen when laminating in the surface of gasbag and profiling with the gasbag, the edge of flexible screen can have great bending angle, make the laminating of the curved surface lid that realizes the wide-angle laminating that bending angle is greater than 70 that can be fine and flexible screen.

In some embodiments, the side surface further includes two opposite second side surfaces, the second side surfaces are located between the two first side surfaces, at least partial areas of the second side surfaces are gathered areas, and the gathered areas of the two opposite second side surfaces are close to each other from the top surface to a direction away from the top surface. At the moment, two first side surfaces of the air bag are provided with furling areas furled from the top surface to the direction far away from the top surface, and two second side surfaces of the air bag are provided with furling areas furled from the top surface to the direction far away from the top surface, so that in the process of laminating the flexible screen and the curved cover plate, when the carrier tape carries the flexible screen to be attached to the surface of the air bag and to be modeled with the air bag, four edges of the flexible screen 10 can have larger bending angles, and the four curved cover plates which are attached at large angles and have bending angles larger than 70 degrees can be well attached to the flexible screen.

In some embodiments of the present application, the inner surface of the airbag has the same shape as the outer surface of the airbag base in a natural state, and the inner surface of the airbag is attached to the outer surface of the airbag base. Namely, the distance from the middle position of the outer surface of the air bag base corresponding to the curved cover plate to the edge position is gradually increased.

In some embodiments, the airbag base includes a top surface, a bottom surface and two opposite third side surfaces arranged between the top surface and the bottom surface, the third side surfaces are at least partially inclined areas, the inclined areas are connected with the top surface, and the inclined areas of the two opposite third side surfaces are gradually close to each other in the direction from the top surface to the bottom surface. When the inner surface of the air bag is attached to the outer surface of the air bag base, the area where the inner surface of the air bag is attached to the third side surface of the air bag base is the first side surface, and a furled area of the first side surface is formed at the position of the inclined area of the third side surface.

In some embodiments, two fourth side surfaces are disposed between the top surface and the bottom surface, the fourth side surfaces are located between the two third side surfaces, at least a partial region of the fourth side surfaces is an inclined region, the inclined region is connected to the top surface, and the inclined regions of the two fourth side surfaces gradually approach each other in a direction from the top surface to the bottom surface. When the inner surface of the airbag is attached to the outer surface of the airbag base, the region where the inner surface of the airbag is attached to the fourth side of the airbag base is the second side, and a gathered region of the second side is formed at the position of the inclined region of the fourth side.

In some embodiments, a transition arc surface is connected between the top surface and the third side surface of the airbag base, and the transition arc surface smoothly connects the top surface and the third side surface, so as to avoid a situation that a sharp angle is generated at a crossing position of the top surface and the third side surface of the airbag base to puncture an airbag sleeved on the airbag base.

In some embodiments, a transition arc surface may be connected between the top surface and the fourth side surface of the airbag base, and the transition arc surface smoothly connects the top surface and the fourth side surface, so as to avoid a situation that a sharp corner is generated at a position where the top surface of the airbag base intersects with the fourth side surface to puncture an airbag sleeved on the airbag base.

In some embodiments, the radius of curvature of the transition curve is greater than 3 mm.

In some embodiments, the wall thickness is the same at each location of the balloon.

In other embodiments of the present application, the wall thickness may also be different at various locations of the balloon. For example, in some embodiments, the wall thickness of the bladder decreases from a central location corresponding to the top surface to an edge location of the top surface.

In some embodiments, the top surface of the bladder seat may be planar.

In some embodiments, the top surface of the airbag base may be an arc-shaped surface, and the arc-shaped surface is an outer convex arc surface with a middle position higher than an edge position.

In other embodiments of the present application, there is a gap between the inner surface of the bladder and the outer surface of the bladder base when the bladder is not filled with the filling medium. At this time, the shape of the airbag base may not be particularly limited.

In some embodiments, the communication pipes are multiple and are all arranged in the airbag base, so that the space occupied by the attaching assembly is saved, and the communication pipes can be prevented from being damaged.

In some embodiments, the outlets of the communication channels are located on the surface of the airbag base, and the outlets of the plurality of communication channels are uniformly distributed on the surface of the airbag base covered by the airbag, so that the filling medium can be uniformly introduced into the airbag.

In embodiments of the present application, the filling medium may be a gas or a liquid.

In some embodiments of this application, the laminating device still includes counterpoint the platform, the centre gripping subassembly is located counterpoint bench, counterpoint the platform motion in order to drive flexible screen with curved surface apron counterpoints.

In some embodiments, the attaching device includes an upper cavity and a lower cavity that is coupled to the upper cavity, the cover plate fixing base is disposed in the upper cavity, the clamping assembly and the attaching assembly are both disposed in the lower cavity, and the upper cavity and the lower cavity form a closed space after being closed, so that the attaching process between the flexible screen and the curved cover plate is performed in the closed space.

In some embodiments, the upper cavity and/or the lower cavity is/are connected with a vacuumizing device, and the vacuumizing device is communicated with the closed space and is used for vacuumizing the closed space, so that the bonding process of the flexible screen and the curved cover plate is performed in a vacuum environment, the adsorption of dust and impurities in the air between the flexible screen and the curved cover plate is avoided, and the generation of bubbles between the flexible screen and the curved cover plate can be reduced.

In some embodiments, the upper cavity and/or the lower cavity is provided with a window, and when the flexible screen is attached to the curved surface cover plate, the projection of the curved surface cover plate on the plane where the window is located in the range of the window, so that a complete attaching process can be observed through the window, and whether a problem exists in the attaching process is convenient to observe and know.

In some embodiments, the attaching device includes a pressure sensor, and the pressure sensor is located on an outer surface of the upper cavity on a side away from the lower cavity and is used for detecting a pressure of the curved cover plate when the flexible screen is attached to the curved cover plate. When the flexible screen is attached to the curved surface cover plate, the pressure and the pressure change speed of the curved surface cover plate are detected by the pressure sensor, so that the volume and the speed of filling media in the air bag are adjusted, and a better attaching effect is guaranteed.

In a second aspect, the present application further provides a fitting assembly, wherein the fitting assembly is used for fitting a flexible screen and a curved cover plate. The joint assembly comprises an air bag base, an air bag and a communication pipeline, a sealed cavity is formed between the air bag and the air bag base or inside the air bag, and the communication pipeline is communicated with the sealed cavity and used for filling a filling medium into the sealed cavity so as to expand the air bag; when the air bag is in a tensioning state, the outer surface of the air bag comprises a top surface and two opposite first side surfaces, the first side surfaces are connected with the top surface, the top surface is an outer convex arc surface with the middle position higher than the edge, at least partial areas of the first side surfaces are furled areas, and the furled areas of the two opposite first side surfaces are close to each other from the top surface to the direction far away from the top surface.

In this application, drive through the gasbag inflation flexible screen laminates with curved surface apron. And two first side faces of the air bag are provided with furling areas which are furled from the top face to the direction far away from the top face, so that two opposite edges of the flexible screen can have a larger bending angle in the process of jointing the flexible screen and the curved cover plate, and the jointing of the curved cover plate jointed at a large angle with the bending angle larger than 70 degrees and the flexible screen can be well realized.

In some embodiments, the outer surface of the airbag further includes two opposite second side surfaces, the second side surfaces are located between the two first side surfaces, at least partial areas of the second side surfaces are gathered areas, and the gathered areas of the two opposite second side surfaces are close to each other from the top surface to a direction away from the top surface. In these embodiments, the two first side surfaces and the two second side surfaces of the airbag both have furled areas which are furled from the top surface to the direction far away from the top surface, so that in the process of attaching the flexible screen to the curved cover plate, four edges of the flexible screen can have larger bending angles, and the attachment of the four-curved cover attached at a large angle with the bending angle larger than 70 degrees to the flexible screen can be well realized.

In some embodiments, the shape of the inner surface of the airbag is the same as the shape of the outer surface of the airbag base in the natural state of the airbag, and the inner surface of the airbag is attached to the outer surface of the airbag base.

In some embodiments, the airbag base comprises opposing top and bottom surfaces, the top surface of the airbag base facing the top surface of the airbag, and two opposing third side surfaces disposed between the top and bottom surfaces, the third side surfaces of the airbag base facing the first side surface of the airbag; at least partial area of the third side surface of the airbag base is an inclined area, the inclined area is connected with the top surface, and the inclined areas of the two opposite third side surfaces are gradually close to each other in the direction from the top surface to the bottom surface. When the inner surface of the air bag is attached to the outer surface of the air bag base, the area where the inner surface of the air bag is attached to the third side surface of the air bag base is the first side surface, and a furled area of the first side surface is formed at the position of the inclined area of the third side surface.

In some embodiments, two fourth side surfaces are disposed between the top surface and the bottom surface, the fourth side surfaces are disposed between the two third side surfaces, at least a partial region of the fourth side surfaces is an inclined region, the inclined region is connected to the top surface, the inclined regions of the two fourth side surfaces gradually approach in a direction from the top surface to the bottom surface, and the fourth side surface of the airbag base faces the fourth side surface of the airbag. When the inner surface of the airbag is attached to the outer surface of the airbag base, the region where the inner surface of the airbag is attached to the fourth side of the airbag base is the second side, and a gathered region of the second side is formed at the position of the inclined region of the fourth side.

In some embodiments, the top surface of the airbag base is an arc-shaped surface, and the arc-shaped surface is an outer convex arc surface with a middle position higher than an edge position, so that the area of the airbag, the inner surface of which is attached to the outer surface of the airbag base, corresponding to the top surface of the airbag base is also an arc-shaped surface.

In some embodiments, the communication pipes are multiple and are arranged in the airbag base, so that the space occupied by the attaching assembly is saved, and the communication pipes can be prevented from being damaged.

In a third aspect, the present application provides a method for attaching a curved cover plate to a flexible screen, including:

fixing the curved surface cover plate on the cover plate fixing seat;

enabling a clamping component to fix a carrier tape carrying a flexible screen, and enabling the flexible screen to be located on one side, facing the cover plate fixing seat, of the carrier tape, wherein the clamping component comprises two groups of clamping pieces which are oppositely arranged, the two groups of clamping pieces are respectively clamped at two ends of the carrier tape, and the flexible screen is located between the two groups of clamping pieces;

Moving a bonding assembly or the clamping assembly along a first direction to enable the bonding assembly and the carrier band to be close to each other until an air bag of the bonding assembly is in contact with the carrier band;

continuing to move the attaching assembly or the clamping assembly along the first direction, and simultaneously moving the two opposite groups of clamping pieces to enable the two opposite groups of clamping pieces to be close to each other so that the carrier band can be profiled with the outer surface of the air bag;

simultaneously moving the attaching assembly and the clamping assembly along a first direction, or moving the cover plate fixing base along the first direction, so that the flexible screen and the cover plate fixing base are close to each other until the distance between the flexible screen and the curved cover plate is within a threshold range, and at the moment, the distance between the flexible screen carried on the carrier band and the curved cover plate is gradually increased from the middle position of the curved cover plate to the edge;

filling a filling medium into the air bag until the middle position of the flexible screen is gradually attached to the curved cover plate from the edge.

Through the application of the laminating method of the curved surface cover plate and the flexible screen, the middle position to the edge position of the flexible screen are gradually laminated with the curved surface cover plate, so that gas between the flexible screen and the curved surface cover plate can be gradually extruded out in the laminating process, and bubbles are prevented from being generated between the flexible screen and the curved surface cover plate.

In some embodiments, after said continuing to move said conformable assembly or said gripping assembly in said first direction while moving said opposing sets of said gripping members to bring said opposing sets of said gripping members into proximity such that said carrier tape contours to an outer surface of said bladder further comprises:

and adjusting the position of the alignment table, wherein the alignment table moves to drive the clamping assembly arranged on the alignment table to move so that the flexible screen is aligned with the curved cover plate. Through counterpointing flexible screen and curved surface apron, in order to guarantee flexible screen along first direction to when the curved surface apron removed, can laminate in curved surface apron just.

In some embodiments, before said continuing to move said conformable assembly or said clamp assembly in said first direction while moving said opposing sets of said clamps to bring said opposing sets of said clamps into proximity, so that said carrier tape contours to an outer surface of said bladder, further comprises the steps of:

and adjusting the position of the alignment table, wherein the alignment table moves to drive the clamping assembly arranged on the alignment table to move so that the flexible screen is aligned with the curved cover plate. That is, in some embodiments of the present application, the flexible screen and the curved cover plate may be aligned before the carrier tape and the outer surface of the airbag are contoured.

Wherein, in the position of adjustment counterpoint platform, counterpoint platform motion drives and locates the motion of the centre gripping subassembly on the counterpoint platform to make flexible screen with still include the step before the counterpoint of curved surface apron:

and moving the two groups of clamping pieces and enabling the two groups of clamping pieces to be far away from each other to tension the carrier tape.

Through earlier make with the carrier band tensioning again the flexible screen with the surface of gasbag carries out the profile modeling, can make the flexible screen is flat earlier and then carries out the profile modeling with the surface of gasbag, thereby can make the flexible screen with the counterpoint of curved surface apron is more accurate.

In some embodiments, the clamping assembly moves towards the cover fixing base along a first direction while the filling of the air bag with the filling medium is performed until the flexible screen gradually adheres to the curved cover plate from the middle position to the edge. Namely, the clamping component moves towards the cover plate fixing base along with the corresponding movement of the expansion of the air bag, so that the carrier tape is prevented from being broken due to larger traction force.

In some embodiments, the method for attaching the curved cover plate to the flexible screen further includes:

moving the clamping assembly along a first direction to enable the clamping assembly to be close to the cover plate fixing base so as to loosen the carrier tape;

Moving the bladder base so that the bladder base is away from the carrier tape;

releasing the clamping of the carrier band by the clamping component;

and separating the carrier tape from the flexible screen.

In these embodiments, the carrier tape is released and the air cells are deflated to prevent the carrier tape from releasing suddenly in a taut state and pulling the flexible screen. And moreover, the carrier band is released first and then the clamping of the carrier band is released, so that the sudden stress change of the flexible screen by the air bag can be avoided, and the flexible screen and the curved cover plate after the attachment is finished are protected from being damaged.

In some embodiments, said moving said bladder seats between or after said moving said bladder seats further comprises:

releasing the filling medium in the balloon in preparation for refilling the balloon with the filling medium.

In some embodiments, before the filling medium into the airbag until the flexible screen gradually attaches to the curved cover plate from the middle position to the edge, the method further includes:

closing the upper cavity and the lower cavity;

will go up the cavity and the airtight space evacuation that the cavity closure formed down to make the laminating process of flexible screen and curved surface apron go on under vacuum environment, avoid the micronic dust impurity in the air etc. to adsorb to between flexible screen and the curved surface apron, also can reduce the production of bubble between flexible screen and the curved surface apron simultaneously.

Drawings

To more clearly illustrate the structural features and effects of the present application, a detailed description is given below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural diagram of a curved cover plate according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of the curved cover plate of FIG. 1 taken along the direction I-I;

FIG. 3 is a schematic structural diagram of a curved cover plate according to another embodiment of the present application;

FIG. 4 is a schematic view of an internal structure of a bonding apparatus according to an embodiment of the present application;

FIG. 5 is a schematic structural view of a cover fixing device in the attaching device of the embodiment of FIG. 4;

FIG. 6 is a schematic view of a carrier tape held by a holder according to an embodiment of the present application;

FIG. 7 is a schematic view of a carrier tape held by a holding member according to another embodiment of the present application;

FIG. 8 is a schematic view of a carrier tape held by a holding member according to another embodiment of the present application;

FIG. 9a is a schematic view of a bonding assembly and a cover plate according to an embodiment of the present disclosure;

FIG. 9b is a schematic structural diagram of a conformable assembly according to one embodiment of the present application;

FIG. 10 is a schematic view of the bladder seat of the conformable assembly of FIG. 9 a;

FIG. 11 is a schematic view of an airbag base according to another embodiment of the present application;

FIG. 12 is a schematic view of an airbag base according to another embodiment of the present application;

FIG. 13 is a schematic structural view of a conformable assembly according to another embodiment of the present application;

FIG. 14 is a schematic structural view of a bonding apparatus according to another embodiment of the present application;

FIG. 15 is a flowchart illustrating a method for attaching a flexible screen to a curved cover plate according to an embodiment of the present disclosure;

FIG. 16 is a schematic view of the carrier tape and bladder after being profiled;

fig. 17 is a schematic view showing a positional relationship between the attachment member and the curved cover plate when the minimum distance between the carrier tape and the curved cover plate is within the threshold range;

FIG. 18 is a schematic view of the flexible screen initially contacting the curved cover;

fig. 19 is a schematic diagram of a state in which the flexible screen is attached to the curved cover plate.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

The application provides a laminating device for carry out high-quality laminating with flexible screen and curved surface apron, avoid appearing defects such as bubble or fold between flexible screen and the curved surface apron. In some embodiments of the present application, the flexible screen is a flexible display screen, and the curved surface cover plate is a protection cover plate for protecting the flexible display screen. It is understood that, in some embodiments, the flexible screen may also be a flexible film layer such as a touch layer or an optical layer (an optical film layer such as a polarizing layer or an antireflection layer).

In this application, the curved surface apron can be hyperbolic surface apron or four curved surface apron. Referring to fig. 1 and 2, a curved cover plate 20 according to an embodiment of the present application is shown, and fig. 2 is a cross-sectional view taken along the direction I-I in fig. 1. In an embodiment of the present application, the curved cover plate 20 is a curved cover plate with double curved surfaces. The device specifically comprises a straight surface 21 and arc surfaces 22 respectively positioned at two sides of the straight surface 21, wherein the arc surfaces 22 are connected with the straight surface 21. In this embodiment, the curved cover plate 20 is a curved cover plate with a bending angle greater than 70 °, that is, the bending angle of the arc surface 22 relative to the straight surface 21 is greater than 70 °. It will be appreciated that in other embodiments of the present application, the curvature angle of the arc surface with respect to the flat surface 21 may be any angle. The bending angle of the arc surface 22 relative to the straight surface 21 is the size of the intersection included angle α between the straight surface 21 and the tangent plane of the end of the arc surface 22 away from the straight surface 21, and the included angle α is located on one side of the plane where the straight surface 21 is located and facing the curved cover plate 20 and on one side of the tangent plane away from the curved cover plate 20.

Referring to fig. 3, fig. 3 is a curved cover plate 20 according to another embodiment of the present application. In this embodiment, the curved cover plate 20 is a four-curved cover plate. The difference between the curved cover plate with four curved surfaces and the curved cover plate with two curved surfaces shown in fig. 1 is as follows: the curved surface cover plate with the four curved surfaces further comprises two newly-added curved surfaces 23, wherein the two newly-added curved surfaces 23 are positioned on two opposite sides of the straight surface 21 and are positioned between the curved surfaces 22 on two sides of the straight surface 21. The bending angle of the newly-increased arc surface 23 relative to the straight surface 21 may be the same as or different from the bending angle of the arc surface 22 relative to the straight surface. It should be emphasized that fig. 3 is only a schematic view of the curved cover plate 20 according to an embodiment of the present application, and actually, the straight surface 21, the arc surface 22, and the newly added arc surface 23 are all connected smoothly.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a bonding apparatus 100 according to an embodiment of the present application. The attaching device 100 is used to attach the flexible screen 10 to the curved cover plate 20. The flexible screen 10 is a flexible display screen, and the curved cover plate 20 is a hyperbolic cover plate. It is understood that the curved cover plate 20 may be a four-curved cover plate in other embodiments of the present application. The attaching device 100 includes a cover fixing base 31, a clamping assembly 50, and an attaching assembly 60. The curved cover plate 20 is fixed on the cover plate fixing base 31. The clamping assembly 50 is used for clamping the carrier film 11 carrying the flexible screen 10, and the flexible screen 10 is located between the attaching assembly 60 and the cover fixing base 31. The attaching assembly 60 is used for pressing the flexible screen 10 to attach to the curved cover plate 20.

The bonding apparatus 100 includes an upper cavity 30a and a lower cavity 30b, and the upper cavity 30a and the lower cavity 30b can move relatively and be bonded. The upper chamber 30a and the lower chamber 30b can form a closed space after the alignment. The cover plate fixing base 31, the clamping assembly 50 and the laminating assembly 60 are all located in the closed space, namely, the flexible screen 10 and the laminating process of the curved cover plate 20 are all located in the closed space.

In some embodiments, a sealing ring 30c is disposed between the upper cavity 30a and the lower cavity 30b, so as to provide a better sealing effect between the upper cavity 30a and the lower cavity 30 b.

In this embodiment, the attaching device 100 further includes a supporting bracket 81, and the lower cavity 30b is fixed on the supporting bracket 81. A plurality of bearing upright posts 82 extending along the first direction are further fixed on the bearing support 81, and the bearing upright posts 82 are respectively arranged at two sides of the upper cavity 30a and the lower cavity 30 b. The bearing upright 82 is provided with a guide rail arranged along the extending direction thereof, the outer surface of the upper cavity 30a is provided with a slide block 32 connected with the guide rail, and the slide block 32 is connected with the first motor 71 so as to drive the slide block 32 to slide along the guide rail through the first motor 71, thereby realizing the movement of the upper cavity 30a relative to the lower cavity 30 b. In this embodiment, the first motor 71 is connected to a screw rod 711 extending along a first direction, the slider 32 is connected to the screw rod 711, and the first motor 71 rotates to drive the screw rod 711 to rotate, so that the slider 32 moves along the screw rod 711, thereby moving the upper cavity 30a relative to the lower cavity 30 b. In this embodiment, two of the bearing columns 82 are respectively disposed on two opposite sides of the upper cavity 30a and the lower cavity 30 b. Each of the sliders 32 is connected to a first motor 71, and the two first motors 71 operate in the same operation mode, so that the movement state of both sides of the upper chamber 30a is the same, thereby maintaining the smooth movement of the upper chamber 30 a. It is understood that in other embodiments of the present application, each of the sliders 32 on the upper cavity 30a can be connected to the same first motor 71, and the same first motor 71 drives each of the sliders 32 to move synchronously. The first motor 71 may be a driving device such as a servo motor or an air cylinder. In this embodiment, the first motor 71 is a servo motor, and has higher control accuracy. It is understood that when the first motor 71 is another type of driving device, the lead screw 711 can be another type of driving rod to cooperate with the first motor 71 to move the upper chamber 30a and the lower chamber 30b relative to each other.

It is understood that, in some embodiments, the bearing column 82 is provided with a guide groove extending along the first direction, the first motor 71 and the lead screw 711 are both disposed in the guide groove, and the slider 32 moves along the guide groove under the action of the lead screw 711 to realize the relative movement of the upper cavity 30a and the lower cavity 30 b.

Further, the bonding apparatus 100 further includes a vacuum pumping device connected to the upper chamber 30a or the lower chamber 30b, so as to vacuum the enclosed space by the vacuum pumping device. Namely, the attaching process of the flexible screen 10 and the curved cover plate 20 can be performed under a vacuum condition, so that bubbles generated between the flexible screen 10 and the curved cover plate 20 in the attaching process are reduced, the attaching process can be performed in a dust-free environment, and impurities are prevented from being present between the flexible screen 10 and the curved cover plate 20.

The cover fixing base 31 is disposed in the upper chamber 30 a. In this embodiment, the cover fixing base 31 is fixed in the upper cavity 30 a. It is understood that in other embodiments of the present application, the cover fixing base 31 can move in the first direction in the upper cavity 30 a. In this embodiment, a fixing groove 311 is formed on one surface of the cover fixing base 31 facing the lower cavity 30b, and the curved cover 20 is fixed in the fixing groove 311. In some embodiments, when the curved cover plate 20 is fixed in the fixing recess 311, the outer surface of the curved cover plate 20 is attached to the inner surface of the fixing recess 311, that is, the curved cover plate 20 can be just embedded in the fixing recess 311, so that the curved cover plate 20 is not easily damaged when the flexible screen 10 is attached to the curved cover plate 20 and applies a force to the curved cover plate 20.

Specifically, referring to fig. 5, fig. 5 is a schematic structural diagram of the cover fixing base 31 according to an embodiment of the present application. The cover fixing base 31 includes a bearing plate 316 and two fixing plates 312 disposed on the bearing plate 316 in parallel. Each fixing plate 312 is provided with a limiting convex strip 313. The limiting convex strips 313 on the two fixing plates 312 are parallel. In this embodiment, the two fixing plates 312 can move relatively to approach or separate from each other, so as to change the distance between the limiting protrusions 313 on the two fixing plates 312. Furthermore, one side of each of the two fixing plates 312 is provided with a fixing protrusion 314, and the length direction of the fixing protrusion 314 is perpendicular to the length direction of the limiting protrusion 313. Two the opposite side of fixed plate 312 is equipped with movable convex strip 315, movable convex strip 315 can move towards or keep away from fixed convex strip 314 moves, just movable convex strip 315 with fixed convex strip 314 is parallel. In this embodiment, the area surrounded by the two limit protruding strips 313, the fixed protruding strip 314 and the movable protruding strip 315 is the fixed groove 311. In other words, the curved cover plate 20 is disposed between the two limit protrusions 313 and between the fixed protrusion 314 and the movable protrusion 315. In addition, the distance between the two limit protrusions 313 and the distance between the movable protrusion 315 and the fixed protrusion 314 may be adjusted according to the actual size of the curved cover panel 20, so that the curved cover panel 20 is clamped by the two limit protrusions 313, the movable protrusion 315 and the fixed protrusion 314.

Further, in some embodiments, the surfaces of the side of the limiting protruding strips 313, the movable protruding strips 315 and the fixed protruding strips 314 facing the fixed grooves 311 are provided with buffering members to provide buffering space, so as to prevent the limiting protruding strips 313, the movable protruding strips 315 and the fixed protruding strips 314 from damaging the curved cover plate 20 when clamping the curved cover plate. In an embodiment of the present application, the buffer member is a rubber member, and provides a buffer space while increasing the friction between the limiting protruding strip 313, the movable protruding strip 315, the fixed protruding strip 314, and the curved surface cover plate 20, so as to achieve a better fixing effect.

Referring to fig. 4 again, the clamping assembly 50 and the attaching assembly 60 are disposed in the lower cavity 30 b. In this embodiment, the clamping assembly 50 includes two sets of clamping members 51 and a first driving portion for driving the clamping members 51 to move. Two sets of the clamping members 51 are located on opposite sides of the laminating assembly 60. The two groups of clamping pieces 51 are respectively clamped on two sides of a bearing film 11 bearing the flexible screen 10, so that the flexible screen 10 is located between the laminating assembly 60 and the cover plate fixing base 31, and the laminating assembly 60 and the curved cover plate 20 move relatively through driving, so that the flexible screen 10 is laminated on the curved cover plate 20. The first driving part is used for driving the clamping piece 51 to loosen or clamp the carrier tape 11, and driving the clamping piece 51 to move.

In this embodiment, the curved cover plate 20 is a double curved cover plate. Referring to fig. 4 and 6, two sets of the clamping members 51 are clamped at two sides of the flexible screen 10 corresponding to the two arc surfaces 22 of the curved cover plate 20, so that the clamping members 51 can drive one side of the flexible screen 10 corresponding to the two arc surfaces 22 of the curved cover plate 20 to bend, thereby avoiding the problem that bubbles are difficult to discharge because the edge of the flexible screen 10 is attached before the edge of the arc surface of the curved cover plate 20 in the attaching process.

Referring to fig. 3 and 7, when the curved cover plate 20 is a four-curved cover plate as shown in fig. 3, four groups of the clamping members 51 are respectively clamped at one side of the flexible screen 10 corresponding to the two arc surfaces 22 and the two newly added arc surfaces 23 of the curved cover plate 20, so that the clamping members 51 can drive one side of the flexible screen 10 corresponding to the two arc surfaces 22 and the two newly added arc surfaces 23 of the curved cover plate 20 to bend, thereby preventing the edge of the flexible screen 10 from contacting the curved cover plate 20 first and avoiding the generation of bubbles during the attaching process.

Further, in some embodiments of this application, two sets of holder 51 is in the bilateral symmetry of flexible screen 10 sets up to when making holder 51 deviate from the motion with tensioning carrier film 11, two sets of holder 51 drags the application of force direction of carrier film 11 all is located collinear, thereby avoids holder 51 to the carrier film 11 application of force direction collineation not and the problem of tearing carrier film 11 apart.

Each set of said clamps 51 may have one or more clamps 51. Referring to fig. 6, fig. 6 is a schematic view illustrating a flexible screen 10 clamped by a clamping member 51 according to an embodiment of the present application. In this embodiment, there is one clamping member 51 in each set.

The clip 51 may be any type of clip. In this embodiment, each of the clamping members 51 includes a lower clamping plate 511 and an upper clamping plate 512, and the upper clamping plate 512 can move relative to the lower clamping plate 511 to release or clamp the carrier film 11. In this embodiment, the lower plate 511 is connected to the support table 516 via a support bar 515 extending in the first direction. The support bar 515 is provided with a slide rail arranged along the extending direction of the support bar 515. The upper clamp plate 512 is connected to the second motor 72 of the first driving part and is capable of sliding along the slide rail on the support bar 515 under the driving of the second motor 72, so that the upper clamp plate 512 can move toward or away from the lower clamp plate 511, the carrier tape 11 is disposed between the upper clamp plate 512 and the lower clamp plate 511, and the carrier tape 11 is clamped or loosened by the movement of the clamp plate of the upper clamp plate 512 relative to the lower clamp plate 511 driven by the second motor 72. The upper clamp plate 512 and the lower clamp plate 511 are both connected to the support table 516. The supporting table 516 and the third motor 73 of the first driving part are connected to drive the supporting table 516 to move along the second direction through the third motor 73, so that the clamping member connected to the supporting table 516 drives the flexible screen 10 to move along the second direction. The second direction is perpendicular to the first direction. In this embodiment, the third motor 73 drives the two clamping members 51 located on both sides of the flexible screen 10 and oppositely disposed to be capable of synchronously moving toward and away from each other.

Further, in some embodiments, a buffer member 517 is disposed on a surface of the upper clamping plate 512 and the lower clamping plate 511 contacting the carrier tape 11, so that friction between the upper clamping plate 512 and the carrier tape 11 and friction between the lower clamping plate 511 and the carrier tape 11 are enhanced by the buffer member 517, and a clamping effect is enhanced. At the same time, damage to the carrier tape 11 by the upper and lower nip

plates

512 and 511 is avoided. In this embodiment, the buffer 517 may be made of an elastic material such as rubber.

Referring to fig. 4 and fig. 6, in the embodiment, the clamping plates of the upper clamping plate 512 and the lower clamping plate 511 are both strip-shaped plate-shaped, and the length direction thereof is greater than or equal to the length of the carrier film 11 at the position where the clamping member 51 clamps the carrier film 11, so that when the clamping member 51 pulls the carrier film 11 to be tensioned, each position of the carrier film 11 can be tensioned.

Further, referring to fig. 4 again, in the present embodiment, a positioning column 513 is further disposed on the lower clamping plate 511. The positioning column 513 is a cylindrical structure protruding from the lower clamp 511 toward the surface of one side of the upper clamp 512, and an opening corresponding to the positioning column 513 is formed in the edge of the carrier film 11. When the holding member 51 clamps the carrier film 11, the fixing member 513 is inserted into the opening of the carrier film 11, so as to position the carrier film 11 on the holding member 51. In addition, the upper clamping plate 511 is also provided with a fixing groove 514 (or an opening 514) corresponding to the positioning column 513. When the holding member 51 clamps the carrier film 11, the positioning column 513 is inserted into the fixing groove or the opening of the upper clamp plate 511, so that the lower clamp plate 511 and the upper clamp plate 512 can clamp the carrier film 11, and meanwhile, the positioning of the lower clamp plate 511 and the upper clamp plate 512 can be realized.

Further, in this embodiment, the bonding apparatus 100 further includes an alignment table 40, and the clamping assemblies 50 are all disposed on the alignment table 40 and move along with the alignment table 40. The alignment table 40 moves to drive the flexible screen 10 to align with the curved cover plate 20. Specifically, the alignment stage 40 is a UVW stage, and is driven to move in the second direction and the third direction and rotate about the axis in the first direction. The third direction is perpendicular to the second direction, and the plane where the second direction and the third direction are located is parallel to the plane where the flexible screen 10 is located. Through the removal and the rotation of counterpoint platform 40, can drive and locate the synchronous motion of holder 51 on the counterpoint platform 40, holder 51 can drive again and bear the flexible screen 10 on the plummer 11 and carry out synchronous motion. Therefore, the alignment table 40 can drive the flexible screen 10 to move so as to position the flexible screen 10 and the curved cover plate 20, and the projection of the flexible screen 10 on the curved cover plate 20 covers the curved cover plate 20, that is, the flexible screen 10 can be just attached to the curved cover plate 20 after moving along the first direction.

In this embodiment, the supporting table 516 for supporting each of the clamping members 51 is connected to the fourth motor 74 of the first driving unit through the supporting column 52, and is fixed on the aligning table 40. The supporting column 52 is connected with a driving rod of the fourth motor 74, so that the fourth motor 74 drives the clamping member 51 to move in the first direction through the supporting column 52, so that the clamping member 51 can drive the flexible screen 10 to move in the first direction. It is understood that, in this embodiment, there are two fourth motors 74, and each fourth motor 74 is connected to one set of the clamping members 51. The two fourth motors 74 can drive the two sets of the clamping members 51 to move in the first direction at the same pace to maintain the smooth movement of the flexible screen 10. In this embodiment, the two fourth motors 74 are of the same type and power so as to drive the two sets of clamping members 51 to move in the first direction at the same pace.

When the alignment table 40 moves, the clamping assembly 50 can drive the flexible screen 10 to move in the second direction, the third direction or rotate around the line in the first direction, so that the position of the flexible screen 10 can be adjusted, and the flexible screen 10 and the curved cover plate 20 can be positioned. Specifically, in this embodiment, before the flexible screen 10 and the curved cover plate 20 are aligned, the position information of the flexible screen 10 and the curved cover plate 20 is obtained by the CCD camera, and the distance in the direction in which the alignment stage 40 needs to move and/or rotate is calculated by the position information of the flexible screen 10 and the curved cover plate 20, so as to position the flexible screen 10 and the curved cover plate 20.

In this embodiment, the alignment tables 40 are all located in the bearing support 81, the structure located inside the alignment tables is protected by the bearing support 81, and the number of structural members in the closed space formed by the upper cavity 30a and the lower cavity 30b can be reduced as much as possible, so that the volume of the closed space can be reduced as much as possible, and the time and power consumption required for vacuum pumping can be reduced. In this embodiment, the driving mechanism (e.g., the second motor 72, the third motor 73, the fourth motor 74, etc.) for driving the bonding module 60 and the clamping module 50 to move may be provided outside the sealed space to reduce the volume of the sealed space as much as possible. In this embodiment, the driving mechanism and the engaging member 60, which are located inside and outside the sealed space, and the clamping member 50 are connected by a driving rod (e.g., a supporting rod 52). Wherein, the driving rod is all equipped with the vacuum bellows outward all to when making the driving rod pass the chamber wall of upper chamber body 30a or lower cavity body 30b, with the kinetic energy transmission that will to laminating subassembly 60, centre gripping subassembly 50 in the time, keep the vacuum environment in the confined space.

Referring to fig. 9a, fig. 9a is a schematic structural diagram of a bonding assembly 60 and a curved cover plate 20 according to an embodiment of the present application. The attachment assembly 60 includes a bladder base 61, a bladder 62, and a communication conduit 612. The second driving unit 75 may be a motor or an air cylinder. The airbag base 61 is connected with the second driving portion 75 through the driving rod 64, the second driving portion 75 drives the airbag base 61 to move along the first direction through the driving rod 64 so as to be far away from or close to the cover sealing plate fixing base 31, and therefore the flexible screen 10 between the attaching assembly 60 and the cover plate fixing base 31 is attached to the curved cover plate 20 in a pressing mode through the movement of the airbag base 61. In this embodiment, the second driving portion 75 is fixed on the upper wall surface of the supporting bracket 81. It is understood that the second driving portion 75 can be fixed at other positions of the supporting bracket 81. For example, the alignment stage 40 may be provided with an opening, and the second driving unit 75 may be provided on the lower wall surface of the support bracket 81 through the opening of the alignment stage 40. The air bag 62 is sleeved on the air bag base 61, a sealed cavity is formed between the air bag 62 and the air bag base 61 or inside the air bag 62, and the communication pipeline 612 is communicated with the sealed cavity and used for filling a filling medium into the sealed cavity so as to expand the air bag 62 and change the size of the sealed cavity.

It is understood that in other embodiments of the present application, the conformable assembly 60 is fixed within the lower cavity 30b, i.e., the conformable assembly 60 cannot move within the lower cavity 30 b. The cover fixing base 31 can be movably disposed in the upper cavity 30a, that is, the cover fixing base 31 is connected to the motor and can be driven by the motor to move along a first direction to be close to or far from the attaching component 60.

In this application, the filling medium may be a gas or a liquid. In this embodiment, the filling medium is a gas. In another embodiment of the present application, the filling medium is a liquid, and the air bag 62 can be inflated by filling the liquid into the air bag, so as to implement the attaching operation of the flexible screen of the present application. Meanwhile, because the attaching process of the flexible screen 10 and the curved cover plate 20 is performed in vacuum, when liquid is used as a filling medium, compared with the case of using liquid as the filling medium, the expansion amount of the air bag 62 can be better controlled, and the problem that the air bag 62 is expanded too much and is broken in the attaching process is avoided. Further, in the present application, the temperature of the filling medium introduced into the air bag 62 can be controlled to improve the bonding efficiency. For example, in an embodiment of the present application, the flexible screen 10 and the curved cover plate 20 are attached by an adhesive, and when the filling medium has a certain temperature, the adhesive can more easily attach the flexible screen 10 and the curved cover plate 20. In some embodiments, after the bonding process is completed, the filling medium with a higher temperature in the air bag 62 can be released and the filling medium with a lower temperature can be refilled, so that the adhesive can be cured quickly, and the bonding efficiency can be improved. Specifically, in the present application, the filling medium of the gas may be air, nitrogen, or other gas; the filling medium of the liquid may be water or the like.

In this embodiment, a sealed cavity is formed between the air bag 62 and the air bag base 61. Specifically, after the airbag 62 is fitted over the airbag base 61, the airbag 62 is fixed to the airbag base 61 by the fixing clip 63 and sealed with the airbag base 61. In this embodiment, the fixing clip 63 is a fixing ring with adjustable size. After the airbag 62 is sleeved on the airbag base 61 through the opening 621 on one side, the fixing ring is sleeved on the edge of the opening 621 of the airbag 62, so that the airbag 62 is fixed on the airbag base 61 through the fixing ring. The air bag 62 is formed of an elastic material such as rubber. When the fixing ring is tightened, the airbag 62 can be sealed while the airbag 62 is fixed to the airbag base 61. In this case, the space between the inner surface of the balloon 62 and the outer surface of the balloon base 61 is the sealed cavity, and the size of the sealed cavity changes with the volume of the filled filling medium.

Further, in some embodiments of the present application, the waist ring of the airbag base 61 is provided with a fixing groove 611, and when the airbag 62 is fixed on the airbag base 61, the fixing ring is recessed in the fixing groove 611, so that the airbag 62 has a better sealing effect.

In the present application, when the cover fixing base 20 and the attaching assembly 60 move relatively to each other to the pre-attaching position, after the air bag 62 is in a tensioned state, the distance L between the air bag 62 and the curved cover plate 20 gradually increases from the middle position of the curved cover plate 20 to the edge of the curved cover plate 20, so that the airbag 10 can be firstly contacted with the middle position of the curved cover plate 20 and then gradually contacted with the edge position of the curved cover plate 20 when continuing to expand for the jointing process, so that during the process of attaching the flexible screen 10 carried thereon to the curved cover plate 20 by the air bag 62, the flexible screen 10 and the curved cover plate 20 are gradually attached from the middle position of the curved cover plate 20 to the edge position of the curved cover plate 20, and the problem that bubbles are difficult to discharge due to the fact that the edge positions of the flexible screen 10 and the curved cover plate 20 are contacted first is solved. The state of the balloon 62 under tension means that the surface of the balloon 62 is flat and has no crimples, and the surface of the balloon 62 is initially under tension or has a certain tension. When the cover fixing base 20 and the attaching component 60 move relatively to the pre-attaching position, the flexible screen 10 and the curved cover 20 start to contact. The distance L between a position of the outer surface of the airbag 10 and the curved cover 20 refers to a distance between the outer surface of the airbag 10 and the inner surface of the curved cover 20 in a direction perpendicular to the position of the outer surface of the airbag 10, wherein the direction perpendicular to the outer surface of the airbag 10 is an expansion direction of the airbag 10.

Referring to fig. 18, fig. 18 is a schematic view of the flexible screen 10 and the curved cover plate 20 beginning to contact each other. When the cover fixing base 31 and the attaching assembly 60 are moved to the pre-attaching position relatively, the air bag 62 is slightly expanded, and the outer surface of the air bag 62 includes a top surface 62a and two first side surfaces 62b connected to the top surface 62 a. The top surface 62a is an outward convex arc surface with a middle position higher than an edge, at least a partial region of the first side surface 62b is a gathered region, and the gathered regions of the two opposite first side surfaces 62b are close to each other from the top surface 62a to a direction away from the top surface 62a, that is, the distance between the gathered regions of the two opposite first side surfaces 62b gradually shortens from the top surface 62a to the direction away from the top surface 62 a. At this time, the distance L between the outer surface of the airbag 62 and the curved cover 20 is gradually increased from the middle position of the curved cover 20 to the edge of the curved cover 20. In addition, in this embodiment, since the two first side surfaces 62b have the furled regions that are furled from the top surface to the direction away from the top surface, when the carrier tape 11 with the flexible screen 10 is attached to the surface of the airbag 62 and is profiled with the airbag 62, the edge of the flexible screen 10 can have a larger bending angle, so that the curved cover 20 attached to the flexible screen 10 at a large angle with the bending angle greater than 70 ° can be well attached.

In this embodiment, the curved cover plate 20 is a hyperbolic cover plate, the middle position of the curved cover plate 20 is a position of a symmetry line of the top surface 21 of the curved cover plate 20, and the symmetry line of the top surface 21 is a length direction (i.e., a third direction) of the curved cover plate 20. At this time, when the flexible screen 10 is attached to the curved cover plate 20, the flexible screen 10 is gradually attached from the symmetrical line position of the top surface 21 of the curved cover plate 20 to the direction of the two arc surfaces 22. At this time, the top surface 62a of the airbag 62 has a parabolic cross-sectional profile in the width direction (i.e., the second direction) and a linear cross-sectional profile in the longitudinal direction.

When the curved surface cover plate 20 is a four-curved surface cover plate, the middle position of the curved surface cover plate 20 may be a position where a symmetry line of the top surface 21 is located, and when the flexible screen 10 is attached to the curved surface cover plate 20, the flexible screen 10 is gradually attached to the flexible screen from the position of the symmetry line of the top surface 21 of the curved surface cover plate 20 to the directions of the two arc surfaces 22. At this time, the top surface 62a of the airbag 62 has a parabolic cross-sectional profile in the width direction (i.e., the second direction) and a linear cross-sectional profile in the longitudinal direction.

In other embodiments, when the curved cover plate 20 is a four-curved cover plate, the middle position of the curved cover plate 20 may also refer to a position of a central point of the top surface 21 of the curved cover plate 20, and at this time, when the flexible screen 10 is attached to the curved cover plate 20, the flexible screen is gradually attached to the curved cover plate 20 from the central point of the top surface 21 of the curved cover plate 20 to the periphery. At this time, the top surface 62a of the airbag 62 has a parabolic cross-sectional profile in the width direction (i.e., the second direction) and a parabolic cross-sectional profile in the longitudinal direction.

When the curved cover plate 20 is a four-curved cover plate, the airbag 20 further includes two opposite second side surfaces, the second side surfaces are located between the two first side surfaces, at least a partial area of the second side surfaces is a furled area, and the furled areas of the two opposite second side surfaces are close to each other from the top surface to a direction away from the top surface.

Referring to fig. 9b, fig. 9b is a schematic structural diagram of a bonding assembly 60 according to another embodiment of the present application. In the attachment assembly 60 of other embodiments of the present application, the bladder 62 may itself be a sealed structure having a sealed cavity, and a portion of the surface of the sealed bladder 62 is adhesively secured to the bladder base 61. At this time, the inside of the balloon 62 forms a sealed chamber. The communication pipe 612 passes through the wall of a part of the airbag adhesively fixed to the airbag base 61 to communicate with the sealed chamber of the airbag 62.

The plurality of communicating pipes 612 are arranged in the airbag base 61, so that the space occupied by the attaching assembly 60 is saved, and the communicating pipes 612 can be prevented from being damaged. Further, in some embodiments of the present disclosure, the outlets of the communication channels 612 are located on the surface of the airbag base 20, and the outlets of the plurality of communication channels 612 are uniformly distributed on the surface of the airbag base 612 covered by the airbag 62, so that the filling medium can be uniformly introduced into the airbag 62.

Referring to fig. 9a again, in the present embodiment, after the airbag 62 is sleeved on the airbag base 61, and after the airbag 62 is sleeved on the airbag base 61, when the filling medium is not filled in the airbag 62, the inner wall of the airbag 62 can be just attached to the outer surface of the airbag base 61, or the airbag 62 is slightly tensioned after being sleeved on the airbag base 61, at this time, the surface of the airbag 62 is flat and has no shrinkage. That is, the inner surface of the airbag 62 has a size and shape substantially the same as the outer surface of the airbag base 61 so as to control the deformation of the airbag 62. In this embodiment, when no filling medium is present in the sealing cavity, the volume of the sealing cavity is zero. It is understood that in some other embodiments of the present application, after the balloon 62 is sleeved on the balloon base 61, when the filling medium is not filled in the balloon 62, i.e. when the balloon 62 is in a natural state, the surface of the balloon 62 is collapsed, and there is a gap between the inner surface of the balloon 62 and the outer surface of the balloon base 61. In these embodiments, when the air bag 62 is filled with a filling medium to tension the surface of the air bag, and the cover fixing base 31 and the attachment assembly 60 are relatively moved to the pre-attachment position, the distance between the outer surface of the air bag 62 and the curved cover 20 gradually increases from the middle position to the edge position of the curved cover 20, so as to ensure that the flexible screen 10 contacts with the middle position of the curved cover 20 first and the flexible screen 10 is gradually attached from the middle position to the edge of the curved cover 20 when the flexible screen 10 is attached to the curved cover 20.

In this embodiment, the airbag base 61 has a trapezoidal structure, and the wall thickness of each position of the airbag 62 is the same. Referring to fig. 10, fig. 10 is a schematic structural diagram of the airbag base 61 according to an embodiment of the present application. The airbag base 61 includes a top surface 61a, a bottom surface 61b opposite to the top surface 61a, and two third side surfaces 61c located between the top surface 61a and the bottom surface 62b and disposed oppositely. In this embodiment, when the curved cover plate 20 is fixed on the cover plate fixing base 31, the top surface 61a is opposite to the flat surface 21 of the curved cover plate 20, and the two side surfaces 61c are respectively opposite to the two arc surfaces 22 of the curved cover plate 20, that is, the top surface 61a faces the flat surface 21, one third side surface 61c faces one arc surface 22, and the other third side surface 61c faces the other arc surface 22. Referring to fig. 18, when the cover fixing base 31 and the attaching assembly 60 are relatively moved to the pre-attaching position, the top surface 61a of the airbag base 61 faces the top surface 62a of the airbag, and the third side surface 61c of the airbag base 61 faces the first side surface 62b of the airbag 62. It is understood that, in other embodiments of the present application, when the curved cover plate 20 is a four-curved cover plate, the airbag base 61 further includes two oppositely disposed fourth sides, the fourth sides are located between the two third sides 61c, and each of the fourth sides is opposite to one of the newly added arc surfaces 23, i.e., one of the fourth sides faces one of the newly added arc surfaces 23, and the other of the fourth sides faces the other newly added arc surface 23. And, the fourth side of the airbag base 61 faces the second side of the airbag 62.

In this embodiment, the top surface 61a is an outward convex arc surface facing the curved cover plate 20. The height of the top surface 61a located in the middle of the two third side surfaces 61c is the highest, that is, the distance between the top surface 61a located in the middle of the two third side surfaces 61c and the curved cover plate 20 is the closest, and the distance between the middle position of the top surface 61a and the edge of the top surface 61a and the curved cover plate 20 is gradually increased, so that when the airbag base 61 drives the airbag 62 to move to gradually approach the curved cover plate 20, the airbag 62 can drive the flexible screen 10 to firstly contact with the middle position of the curved cover plate 20, and then gradually attach the flexible screen 10 from the middle position to the edge position of the curved cover plate 20, so as to avoid the problem that the edge position of the curved cover plate 20 is attached to the flexible screen 10 first, so that gas between the curved cover plate 20 and the flexible screen 10 is not discharged well to form bubbles.

In this embodiment, at least a partial region of the third side surface 61c extending from the top surface 61a to the bottom surface 61b is an inclined region, and the two third side surfaces 61c are gradually close to each other in a direction from the top surface 61a to the bottom surface 61 b. Specifically, the inclined area may be a plane or a curved surface.

In this embodiment, the inclined area is a plane, and an angle β formed by the intersection of the plane of the inclined area and the straight surface 21 of the curved cover plate 20 is an acute angle. In this embodiment, the straight surface 21 of the curved cover plate 20 is parallel to the tangent plane of the vertex of the top surface 61a, i.e., the angle β formed by the inclined area and the tangent plane of the vertex of the top surface 61a is an acute angle. The angle β is located on the side of the tangent plane of the apex of the top surface 61a facing the airbag base 61 and on the side of the plane of the inclined area facing the airbag base 61. In this embodiment, an angle β formed by each position of the third side surface 61c and a tangent plane of a vertex of the top surface 61a is an acute angle, that is, the regions where the third side surface 61c is located are all the inclined regions. Because the inclined area is gradually inclined towards the direction inside the airbag base 61 in the direction from the top surface 61a to the bottom surface 61b, when the bearing film 11 bears the flexible screen 10 and covers the surface of the airbag 62, the clamping piece 51 can clamp the bearing film 11 to be close to the inclined area, so that the two ends of the flexible screen 10 borne on the bearing film 11 can be bent by a large angle, and when the curved cover plate 20 is a curved cover plate with a bending angle larger than 70 degrees, the problem that bubbles generated by the fact that the edge of the flexible screen 10 is firstly contacted with the curved cover plate 20 are difficult to discharge can be avoided. It is understood that when the curved cover 20 is a four-curved cover, the fourth side of the airbag base 61 may also include the sloped region to achieve a higher quality fit.

Referring to fig. 11 and 12, a partial region of the third side surface 61c is the inclined region, and the inclined region is close to the top surface 61a and is connected to the top surface 61 a. The inclined area is a cambered surface, and an angle beta formed by the intersection of a tangent plane at any position of the inclined area and the straight surface 21 of the curved cover plate 20 is an acute angle. In this embodiment, the straight surface 21 of the curved cover plate 20 is parallel to the tangent plane of the vertex of the top surface 61a, i.e., the angle β formed by the inclined area and the tangent plane of the vertex of the top surface 61a is an acute angle. The angle β is located on the side of the tangent plane of the apex of the top surface 61a facing the airbag base 61 and on the side of the plane of the inclined area facing the airbag base 61.

Further, in the present application, the top surface 61a and the third side surface 61c are connected by a transition arc surface 61d, so as to avoid a situation that a sharp corner is generated on the airbag base 61 to puncture the airbag 62 sleeved on the airbag base 61. In some embodiments of the present application, the radius of curvature of the transition arc surface 61d is greater than or equal to 3 mm. When the curved cover plate 20 is a four-curved cover plate, the top surface 61a and the fourth side surface may also be connected by a transition arc surface 61 d.

In each of the embodiments shown in fig. 10 to 12, the wall thickness of each position of the airbag 62 is equal, and the top surface 61a of the airbag base 61 is an outward convex arc surface facing the curved cover plate 20, so that when the cover fixing base and the attaching component move relatively to each other to the pre-attaching position, the distance between the outer surface of the airbag 62 and the curved cover plate 20 after being tensioned is gradually increased from the middle position of the curved cover plate 20 to the edge, so that when the airbag 62 is gradually inflated to attach the flexible screen 10 carried thereon to the curved cover plate 20, the middle position to the edge of the flexible screen 10 can be gradually attached to the curved cover plate 20, thereby preventing air bubbles from being generated between the flexible screen 10 and the curved cover plate 20. It is understood that, in some embodiments of the present application, the wall thickness of the airbag 62 gradually decreases from a region corresponding to the middle position of the flat surface 21 to a region corresponding to the edge position of the flat surface 21, in which case, the top surface of the airbag base 61 may be an outward convex arc surface, a flat surface or a slight inward concave surface facing the curved cover plate 20, and when the airbag 62 is sleeved on the airbag base 62 and the inner surface of the airbag 62 is attached to the surface of the airbag base 61, and the cover fixing base 31 and the attachment assembly 60 are relatively moved to the pre-attachment position, the distance between the outer surface of the airbag 62 and the curved cover plate 20 gradually increases from the middle position to the edge position of the curved cover plate 20.

Referring to fig. 13, fig. 13 is a schematic structural diagram of the airbag base 61 according to an embodiment of the present application. The airbag base of the present embodiment differs from the airbag base shown in fig. 10 in that: the top surface 61a is a plane, and the wall thickness of the air bag 62 gradually decreases from the area corresponding to the middle position of the top surface 61a to the area corresponding to the edge position of the top surface 61a, so that when the cover fixing base 31 and the attaching assembly 60 move relatively to the pre-attaching position, the distance between the air bag 62 and the curved cover 20 gradually increases from the middle position to the edge position, so that the flexible screen 10 carried on the air bag 62 can be attached from the middle position to the edge position gradually, and the generation of air bubbles during the attaching process is avoided.

Further, in some embodiments of the present application, go up cavity 30a and/or be equipped with the window on the cavity 30b down, when flexible screen 10 was lapped 20 with the curved surface, curved surface apron 20 was in the planar projection in window place is located the window within range, thereby passes through complete laminating process can be observed to the window to whether the observation is known and is laminated the in-process and have a problem. Referring to fig. 14, fig. 14 is a schematic structural diagram of a bonding apparatus 100 according to an embodiment of the present application. In this embodiment, the upper cavity 30a is provided with a first window 91, and the lower cavity 30b is provided with a second window 92. The orthographic projection of the curved cover plate 20 fixed on the cover plate fixing base 31 on the first window 91 is positioned in the first window 91. The orthographic projection refers to a projection of a parallel projection line perpendicular to the plane of the first window 91.

Specifically, in this application, laminating device 100 still includes the structure of making a video recording, it is located to make a video recording the structure go up cavity 30a with the airtight space that cavity 30b formed is outside down, so that see through the window observes the laminating process of airtight inside flexible screen 10 and curved surface apron 20.

Further, referring to fig. 4 and 14, the attaching device 100 further includes a pressure sensor 34. In this embodiment, the pressure sensor 34 is located on an outer surface of the upper cavity 30a on a side away from the lower cavity 30b, and is configured to detect a pressure applied to the curved cover plate 20 when the flexible screen 10 is attached to the curved cover plate 20. Specifically, when the flexible screen 10 is attached to the curved cover plate 20, the airbag 62 expands to push the flexible screen 10 to be attached to the curved cover plate 20, so as to generate an acting force on the curved cover plate 20, and the acting force applied to the curved cover plate 20 is transmitted from the upper cavity 30a to the pressure sensor 34. The pressure and the pressure change speed of the curved surface cover plate 20 when the flexible screen 10 is attached to the curved surface cover plate 20 are detected by the pressure sensor, so that the volume and the speed of filling media in the air bag 62 are adjusted, and a better attaching effect is guaranteed.

It is understood that in some embodiments, when the cover fixing base 31 can move relative to the upper cavity 30a, the pressure sensor 34 can be disposed between a side of the cover fixing base 31 facing away from the lower cavity 30b and an inner wall of the upper cavity 30 a. At this time, when the flexible screen 10 is attached to the curved cover plate 20, the acting force of the air bag 62 on the curved cover plate 20 can be transmitted to the pressure sensor 34, so that the pressure applied to the curved cover plate 20 when the flexible screen 10 is attached to the curved cover plate 20 is detected by the pressure sensor 34.

Referring to fig. 15 and fig. 4, fig. 15 is a flow chart illustrating a process of attaching the flexible screen 10 to the curved cover plate 20 according to an embodiment of the present disclosure. Specifically, in an embodiment of the present application, the flexible screen 10 is attached to the curved cover plate 20 by the attaching device 100 shown in fig. 4. The method for attaching the flexible screen 10 to the curved cover plate 20 specifically includes:

step 110: the flexible screen 10 is attached to the carrier tape 11.

Specifically, in this embodiment, the flexible screen 10 is attached to the middle position of the carrier tape 11 through an adhesive layer. It is understood that in other embodiments of the present application, the flexible screen 10 may be attached to the carrier tape 11 by other means.

Step 120: the curved cover plate 20 is fixed on the cover plate fixing seat 31.

The curved-surface cover plate 20 is placed in the fixing groove 311 of the cover plate fixing seat 31, and the distance between the two fixing plates 312 and the distance between the movable protruding strip 315 and the fixing protruding strip 314 are adjusted, so that the two sides of the curved-surface cover plate 20 are clamped by the movable protruding strip 315, the fixing protruding strip 31 and the limiting protruding strips 313 of the two fixing plates 312. In this embodiment, the curved surface cover plate 20 is a double curved surface cover plate, and the limiting convex strips 313 are clamped on two sides of the arc surface 22 of the curved surface cover plate 20.

Step 130: the carrier tape 11 carrying the flexible screen 10 is fixed by the clamping assembly 50, and the flexible screen 10 is located on one side of the carrier tape 11 facing the cover fixing seat 31. The clamping assembly 50 includes two sets of clamping members 51 disposed opposite each other. As shown in fig. 6, two sets of the clamping members 51 are respectively clamped at two ends of the carrier tape 11, and the flexible screen 10 is located between the two sets of the clamping members 51.

The second motor 72 drives the upper clamping plate 512 to move forward in the first direction to be away from the lower clamping plate 511, so as to place the end of the carrier tape 11 on the lower clamping plate 511, and make the positioning posts 513 on the lower clamping plate 511 pass through the openings on the carrier tape 11. The nip plate of the upper nip plate 512 is driven to move in the first direction negative direction to move toward the lower nip plate 511, thereby nipping the carrier tape 11 by the upper nip plate 512 and the lower nip plate 511.

It is understood that

steps

110, 120 and 130 may be transposed in any order. In some embodiments, step 110 may be eliminated, and in step 130, the end of carrier tape 11 carrying flexible screen 10 is secured by clamping assembly 50.

It will be appreciated that when the curved cover plate 20 is a four-curved cover plate, the clamping assembly 50 includes four sets of two oppositely disposed clamping members 51. As shown in fig. 7, the four sets of clips 51 clip to the four sides of the carrier tape 11. The specific clamping manner is the same as that when the curved surface cover plate 20 is a hyperboloid cover plate, and the description is omitted.

Step 140: the two sets of the gripping members 51 are moved and the two sets of the gripping members 51 are moved away from each other to tension the carrier tape 11.

The grippers 51 are driven to move in the second direction by the third motor 73 so that the two sets of grippers 51 move away from each other, thereby tensioning the carrier tape 11. By tensioning the carrier tape 11, the flexible screen 10 attached to the carrier tape 11 is flattened.

It will be appreciated that when the curved cover 20 is a four-curved cover, the clamping members 51 on opposite sides of the carrier tape 11 are spaced apart from each other, such that the four sets of clamping members 51 are spaced apart from each other, thereby flattening the flexible screen 10.

Step 150: the position of the alignment table 40 is adjusted to align the flexible screen 10 with the curved cover plate 20.

The alignment means that the orthographic projection of the flexible screen 10 on the curved cover plate 20 is located in the curved cover plate 20, so that the flexible screen 10 can be attached to the curved cover plate 20 just when moving along the first direction towards the curved cover plate 20.

Specifically, before the flexible screen 10 is aligned with the curved surface cover plate 20, the position information of the flexible screen 10 and the curved surface cover plate 20 is obtained through the CCD camera, and the distance in the direction in which the alignment table 40 needs to move and/or rotate is calculated through the position information of the flexible screen 10 and the curved surface cover plate 20, and then the alignment table 40 is moved by a certain distance in the second direction and/or the third direction, or the alignment table 40 rotates by a certain angle, so that the clamping assembly 50 arranged on the alignment table 40 is driven to move synchronously, and the flexible screen 10 clamped on the clamping assembly 50 is positioned with the curved surface cover plate 20. In this embodiment, after obtaining the position information of the flexible screen 10 and the curved cover plate 20, the CCD camera is moved out of the upper cavity 30a and the lower cavity 30b, so as to avoid the CCD camera occupying the volume of the enclosed space.

In this embodiment, the carrier tape 11 is first tensioned in step 140 to flatten the flexible screen 10, so that the flexible screen 10 and the curved cover plate 20 can be aligned more accurately.

Step 160: closing the upper chamber 30a and the lower chamber 30 b.

The upper chamber 30a is driven by the first motor 71 to move along the guide rail on the bearing upright 82 until the upper chamber 30a and the lower chamber 30b are closed.

Step 170: the sealed space formed by closing the upper chamber 30a and the lower chamber 30b is evacuated.

And starting a vacuumizing device communicated with the closed space so as to vacuumize the closed space through the vacuumizing device. In this application, earlier with airtight space evacuation back, carry out subsequent laminating operation again (being flexible screen 10 and curved surface apron 20's laminating process promptly), can avoid the laminating in-process, micronic dust impurity in the air etc. adsorb to between flexible screen 10 and the curved surface apron 20, also can reduce the production of bubble between flexible screen 10 and the curved surface apron 20 simultaneously.

It is understood that in some embodiments of the present application, when the attaching device 100 does not have the upper cavity 30a and the lower cavity 30b, i.e., the attaching process of the flexible screen 10 and the curved cover plate 20 is performed in the air directly, and does not need to be performed in a vacuum environment, the

steps

160 and 170 may be omitted.

Step 180: moving the bonding module 60 or the clamping module 50 in a first direction to make the bonding module 60 and the carrier tape 11 approach each other until the air bag 62 of the bonding module 60 contacts the carrier tape 11.

In this embodiment, the bonding module 60 can move in the first direction in the lower cavity 30b, and at this time, the bonding module 60 is moved in the positive direction of the first direction, so that the air bag 62 of the bonding module 60 approaches the carrier tape 11 until contacting the carrier tape 11. It will be appreciated that in some embodiments, when the conformable assembly 60 is secured in the lower cavity 30b, i.e., the conformable assembly 60 cannot be moved, the clamping assembly 50 is moved in the negative first direction such that the clamping assembly 50 moves the carrier tape 11 toward the air pockets 62 of the conformable assembly 60 until the carrier tape 11 contacts the air pockets 62. It should be understood that the term "moving the attaching assembly 60" as used herein refers to moving the airbag base 62 and the airbag 61 carried on the airbag base 62, and that moving the clamping assembly 50 refers to moving the sets of clamping members 51 of the clamping assembly 50.

It will be appreciated that in some embodiments of the present application, when the bladder 62 is not filled with the filling medium, and there is a gap between the inner surface of the bladder 62 and the outer surface of the bladder base 61, the filling medium needs to be filled into the bladder 62 to place the bladder base 61 in a tensioned state before step 180.

Step 190: continuing to move either the attaching assembly 60 or the clamping assembly 50 in the first direction, the opposing sets of clamping members 51 are moved simultaneously to bring the opposing sets of clamping members 51 closer together so that the carrier tape 11 follows the outer surface of the bladder 62.

Referring to fig. 16, specifically, when the profiling of the outer surfaces of the carrier tape 11 and the airbag 62 is completed, the clamping member 51 drives the two ends of the carrier tape 11 to be close to the first side surface 62c of the airbag base 62, so that the carrier tape 11 is attached to the positions of the airbag 62 corresponding to the top surface 62a and the side surface 62c of the airbag base 62, and the edge of the flexible screen 10 is bent into an arc shape, thereby ensuring that the distance between the flexible screen 10 and the curved cover plate 20 is gradually increased from the middle position to the edge position of the curved cover plate 20 when the cover plate fixing base and the attaching assembly relatively move to the pre-attaching position. The distance between any point on the flexible screen 10 and the curved cover plate 20 is the length of a line segment between the point on the flexible screen 10 and the curved cover plate 20, and the line segment passes through the point on the flexible screen 10 and is perpendicular to a tangent plane where the point is located.

It can be understood that, when the curved cover plate 20 is a four-curved cover plate, the four sets of the clamping members 51 bring the four sides of the carrier tape 11 close to the first side surface 62c and the second side surface of the airbag base 61, so that the carrier tape 11 is attached to the airbag 62 corresponding to the first side surface 62c, the second side surface and the top surface 62a of the airbag base 61.

When curved surface apron 20 is four curved surface apron, be equipped with hollow out construction on the four corners of carrier band 11 to make holder 51 drive carrier band 11 and laminate to gasbag 62 and correspond when first side 62c, the second side of gasbag base 61, can not form the fold in the four corners of carrier band 11, thereby realize better laminating effect. Moreover, the flexible screen 10 carried on the carrier tape 11 also has a hollow structure, so that when the flexible screen 10 is attached to the curved cover plate 20, no wrinkles are formed at four corners of the flexible screen 10. In some embodiments, the hollow structure of the flexible screen 10 overlaps with the hollow structure of the carrier tape 11. For example, referring to fig. 7, notches 111 are formed at four corners of the carrier tape 11, notches 101 are formed at four corners of the flexible screen 10, and the notches 101 overlap the notches 111. In this embodiment, the notch 111 is a hollow structure of the carrier tape 11, and the notch 101 is a hollow structure of the flexible screen 10.

In this embodiment, the attaching assembly 60 is moved in the positive direction of the first direction, so that the attaching assembly 60 pushes a part of the carrier tape 11 to move toward the cover fixing base 31, and simultaneously, the two sets of clamping members 51 are moved relatively, so that the carrier tape 11 is attached to the top surface 62a and the side surface 62b of the air bag 62, and the profiling of the carrier tape 11 and the air bag 62 is realized.

It is understood that in other embodiments of the present application, when the attaching assembly 60 is fixed in the lower cavity 30b, i.e. the attaching assembly 60 cannot move, the clamping assembly 50 can be moved in the negative direction of the first direction, and the clamping members 51 of the clamping assembly 50 are moved close to each other, so that the clamping assembly 50 moves to the first side 61c of the air bag base 61, so that the carrier tape 11 is attached to the top surface 62a and the side surface 62b of the air bag 62, and the carrier tape 11 is conformed to the air bag 62.

In addition, in the application, in the process of profiling the outer surfaces of the carrier tape 11 and the airbag 62, the clamping piece 52 moves, so that the carrier tape 11 is constantly in a tensioning state, wrinkles generated in the process of profiling the outer surfaces of the carrier tape 11 and the airbag 62 are avoided, and wrinkles generated when the carrier tape 11 drives the flexible screen 10 to be attached to the curved cover plate 20 are further avoided.

In some embodiments, while continuing to move the bladder seat 61 positively in the first direction, the clamps 51 are moved negatively in the first direction and the opposing clamps 51 are brought closer together, thereby achieving a contour of the carrier tape 11 to the outer surface of the bladder 62 while maintaining the moment of tension of the carrier tape 11.

It is understood that in some embodiments, step 140 or

steps

140 and 150 may be absent. Alternatively, step 140 is eliminated, and step 150 is adjusted to step 190, that is, the flexible screen 10 and the curved cover plate 20 are aligned after the profiling of the carrier tape 11 and the air bag 62 is completed. Since the position of the flexible screen 10 is not changed after the flexible screen 10 and the airbag 62 are contoured in step 190, after step 190, the alignment table 40 is adjusted again to align the flexible screen 10 and the curved cover plate 20, so that the alignment can be more accurate. At this time, the CCD camera is located in the closed space.

Step 200: referring to fig. 17, the attaching assembly 60 and the clamping assembly 50 are moved simultaneously along a first direction, or the cover fixing base 31 is moved along the first direction, so that the flexible screen 10 and the cover fixing base 31 are close to each other until the distance between the flexible screen 10 and the curved cover 20 is within a threshold range, and at this time, the distance between the flexible screen 10 carried on the carrier tape 11 and the curved cover 20 is gradually increased from the middle position of the curved cover 20 to the edge. The threshold range is smaller than (m-n), m is the maximum distance that the airbag can expand, and n is the distance between the curved cover plate 31 and the flexible screen 10 that is the farthest distance when the curved cover plate 31 and the flexible screen 10 start to be attached. In this embodiment, the threshold range is less than 3mm, that is, the attaching assembly 60 and the cover fixing base 31 are close to each other until the distance between the flexible screen 10 and the curved cover 20 is within 3 mm.

In this embodiment, the attaching module 60 and the clamping module 50 are moved simultaneously, that is, the air bag base 61 and the clamping member 51 of the attaching module 60 are moved, so that the carrier tape 11 is always kept in a shape similar to the air bag 62, and at the same time, the flexible screen 10 is made to approach the curved cover plate 20 on the cover plate fixing base 30. It is understood that in some embodiments, when the cover fixing base 30 is capable of moving in the first direction while the attaching assembly 60 is fixed in the lower cavity 30b, the cover fixing base 30 is moved in the negative direction of the first direction, so that the curved cover 20 is close to the flexible screen 10.

Step 210: filling media into the air bag 62 until the middle position of the flexible screen 10 is gradually attached to the curved cover plate 20 to the edge.

Referring to fig. 18 and 19, fig. 18 shows a state where the air bag 62 is filled with a filling medium until the flexible screen 10 starts to contact the curved cover plate 20; fig. 19 shows a state where the air bag 62 is filled with a filling medium until the flexible screen 10 is completely attached to the curved cover plate 20. The air bag 62 is filled with a filling medium through a filling medium channel provided in the air bag base 61, so that the air bag 62 is gradually inflated. The flexible screen 10 carried on the air bag 62 is gradually attached to the curved cover plate 20 from the middle position to the edge position by the expansion of the air bag 62.

In some embodiments, the clamping assembly 50 is moved correspondingly to the expansion of the air bag 62, so that the clamping assembly 50 moves toward the cover fixing base 31 to prevent the carrier tape 11 from being broken due to a large pulling force.

In some embodiments of the present application, the attaching process of the flexible screen 10 and the curved cover plate 20 further includes:

step 220: the clamping assembly 50 is moved in the first direction such that the clamping assembly 50 approaches the cover fixing base 31 to release the carrier tape 11.

Step 230: the airbag base 61 is moved so that the airbag base 61 is away from the carrier tape 11.

It will be appreciated that prior to step 230, the filling medium within the bladder 62 may be released to allow the bladder 62 to move away from the carrier tape 11 and prepare for the next filling with filling medium. Alternatively, in some embodiments, the filling medium within the bladder 62 may be released after step 230 in preparation for the next filling with filling medium.

Step 240: the clamping of the carrier tape 11 by the clamping assembly 50 is released.

It is understood that the order of step 230 and step 240 may be changed in the present application. In the application, the carrier tape 11 is firstly released, and then the air bag is deflated 62, so that the carrier tape 11 can be prevented from being suddenly released in a tightened state to pull the flexible screen 10. Moreover, the carrier tape 11 is released first, and then the clamping of the carrier tape 11 is released, so that the sudden stress change of the flexible screen 10 caused by the air bag 62 can be avoided, and the flexible screen 10 and the curved cover plate 20 after the attachment are protected from being damaged.

Step 260: separating the carrier tape 11 from the flexible screen 10.

In some embodiments, the curved cover plate 20 and the flexible screen 10 after the lamination are moved to a separation chamber, and the carrier tape 11 is separated from the flexible screen 10 in the separation chamber. Also, in some embodiments, before step 260, step 250 is further included:

the upper chamber 30a is moved such that the upper chamber 30a is separated from the lower chamber 30 b. The vacuum environment is released by separating the upper chamber 30a from the lower chamber 30b, and the carrier tape 11 is separated from the flexible screen 10.

In the present application, the flexible screen 10 and the curved cover plate 20 are attached to each other by the attaching device 100. The carrying belt 11 bearing the flexible screen 10 and the air bag 62 are firstly profiled, so that when the cover plate fixing base and the laminating component relatively move to the pre-laminating position, the distance between the flexible screen 10 and the curved cover plate 20 is gradually increased from the middle position to the edge of the curved cover plate 20, the flexible screen 10 and the curved cover plate 20 are gradually laminated from the middle position to the edge position of the curved cover plate 20, and the generation of bubbles between the flexible screen 10 and the curved cover plate 20 can be avoided. In addition, in the attaching process, the clamping assembly 50 always tensions the carrier tape 11 to avoid wrinkles caused by the slack of the carrier tape 11 and avoid bubbles between the flexible screen 10 and the curved cover plate 20 during attaching.

The foregoing is a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations are also regarded as the protection scope of the present application.

Claims

1. A laminating device is used for laminating a flexible screen and a curved cover plate and is characterized by comprising a cover plate fixing base, a clamping assembly and a laminating assembly;

the cover plate fixing base is used for fixing the curved cover plate; the clamping assembly is used for clamping a bearing film bearing the flexible screen, and the flexible screen is positioned between the attaching assembly and the cover plate fixing base; the laminating assembly is used for abutting against the flexible screen so as to laminate the flexible screen with the curved cover plate;

the joint assembly comprises an air bag base, an air bag and a communication pipeline, a sealed cavity is formed between the air bag and the air bag base or inside the air bag, and the communication pipeline is communicated with the sealed cavity and used for filling a filling medium into the sealed cavity so as to expand the air bag; the utility model discloses a flexible screen, including apron fixed baseplate, curved surface apron, gasbag, curved surface apron, apron fixed baseplate with when laminating subassembly relative movement to the position of laminating in advance, the gasbag is in the tensioning state, just the surface of gasbag with distance between the curved surface apron is followed the intermediate position of curved surface apron extremely the edge of curved surface apron is crescent, wherein, apron fixed baseplate with when laminating subassembly relative movement to the position of laminating in advance, flexible screen with the curved surface apron begins to contact.

2. The laminating device of claim 1, wherein when the cover fixing base and the laminating assembly are moved relative to each other to the pre-laminating position, the outer surface of the airbag includes a top surface and two first side surfaces connected to the top surface, the top surface is an outwardly convex curved surface with a middle position higher than an edge, at least a portion of the first side surfaces are gathered regions, and the gathered regions of the two opposite first side surfaces are close to each other from the top surface in a direction away from the top surface.

3. The laminating device of claim 2 wherein said side surfaces further comprise opposing second side surfaces, said second side surfaces being positioned between said first side surfaces, at least a portion of said second side surfaces being gathered regions, the gathered regions of the opposing second side surfaces being adjacent to each other in a direction from said top surface away from said top surface.

4. The attaching device according to claim 1, wherein the inner surface of the balloon has the same shape as the outer surface of the balloon base in a natural state, and the inner surface of the balloon is attached to the outer surface of the balloon base.

5. The laminating device of claim 4 wherein the airbag base includes opposing top and bottom surfaces and opposing third side surfaces disposed therebetween, the third side surfaces being at least partially defined by sloped regions, the sloped regions being connected to the top surface, the sloped regions of the opposing third side surfaces being progressively closer together in a direction from the top surface to the bottom surface.

6. The laminating device of claim 5, wherein two fourth opposing side surfaces are further disposed between the top surface and the bottom surface, the fourth side surfaces are disposed between the two third opposing side surfaces, at least a portion of the fourth side surfaces are sloped regions, the sloped regions are connected to the top surface, and the sloped regions of the two fourth opposing side surfaces gradually approach each other in a direction from the top surface to the bottom surface.

7. The laminating device of claim 5 or 6 wherein a transition contour is coupled between the top surface and the third side surface of the airbag base, the transition contour smoothly coupling the top surface and the third side surface.

8. The laminating device of claim 7, the radius of curvature of the transition curve being greater than 3 mm.

9. The laminating device of claim 5 or 6 wherein the wall thickness is the same at each location of the balloon.

10. The laminating device of claim 5 or 6 wherein the bladder has a wall thickness that decreases from a central location corresponding to the top surface to an edge location of the top surface.

11. The laminating device of claim 10 wherein the top surface of the bladder base is planar.

12. The laminating device according to claim 9 or 10, wherein the top surface of the airbag base is an arc-shaped surface, and the arc-shaped surface is an outwardly convex arc surface with a middle position higher than an edge position.

13. The laminating device according to claim 1, wherein the communication channel is a plurality of communication channels, and the plurality of communication channels are provided in the airbag base.

14. The laminating device of claim 13, wherein the outlets of the communication channels are located on the surface of the airbag base, and the outlets of the plurality of communication channels are evenly distributed on the surface of the airbag base covered by the airbag.

15. The laminating device of claim 1 wherein the filling medium is a gas or a liquid.

16. The bonding apparatus according to claim 1, further comprising an alignment stage, wherein the clamping assembly is disposed on the alignment stage, and the alignment stage moves to align the flexible screen with the curved cover plate.

17. The attaching device according to claim 1 or 16, wherein the attaching device includes an upper cavity and a lower cavity that is attached to the upper cavity, the cover plate fixing base is disposed in the upper cavity, the clamping assembly and the attaching assembly are both disposed in the lower cavity, and the upper cavity and the lower cavity form a closed space after being closed.

18. The laminating device of claim 17, wherein a vacuum extractor is coupled to the upper chamber and/or the lower chamber, the vacuum extractor being in communication with the enclosed space for evacuating the enclosed space.

19. The laminating device of claim 17, wherein a window is disposed in the upper cavity and/or the lower cavity, and when the flexible screen is laminated to the curved cover plate, a projection of the curved cover plate on a plane where the window is disposed is located within the window.

20. The laminating device of claim 17, wherein the laminating device comprises a pressure sensor positioned on an outer surface of the upper cavity on a side facing away from the lower cavity for detecting a pressure of the curved cover plate when the flexible screen is laminated to the curved cover plate.

21. A joint assembly is used for jointing a flexible screen and a curved cover plate and is characterized by comprising an air bag base, an air bag and a communication pipeline, wherein a sealed cavity is formed between the air bag and the air bag base or inside the air bag, and the communication pipeline is communicated with the sealed cavity and used for filling a filling medium into the sealed cavity so as to expand the air bag; when the air bag is in a tensioning state, the outer surface of the air bag comprises a top surface and two opposite first side surfaces, the first side surfaces are connected with the top surface, the top surface is an outer convex arc surface with the middle position higher than the edge, at least partial areas of the first side surfaces are furled areas, and the furled areas of the two opposite first side surfaces are close to each other from the top surface to the direction far away from the top surface.

22. The fit assembly of claim 21, wherein the outer surface of the bladder further comprises two opposing second sides, the second sides being positioned between the two first sides, at least a portion of the second sides being gathered regions, the gathered regions of the two opposing second sides being adjacent to each other in a direction from the top surface away from the top surface.

23. The attachment assembly of claim 21 or 22, wherein the bladder has an inner surface that is shaped to conform to the outer surface of the bladder base in a natural state.

24. The fit assembly of claim 23, wherein the airbag base comprises opposing top and bottom surfaces, and opposing third sides disposed between the top and bottom surfaces, the top surface of the airbag base facing the top surface of the airbag, the third side of the airbag base facing the first side of the airbag; at least partial area of the third side surface of the airbag base is an inclined area, the inclined area is connected with the top surface, and the inclined areas of the two opposite third side surfaces are gradually close to each other in the direction from the top surface to the bottom surface.

25. The fit assembly of claim 24, wherein two fourth sides are disposed between the top and bottom sides, the fourth sides being disposed between the two third sides, at least a portion of the fourth sides being an inclined region connected to the top side, the inclined regions of the two fourth sides being gradually closer in a direction from the top side to the bottom side, the fourth side of the airbag base facing the fourth side of the airbag.

26. The conformable assembly of claim 24 or 25, wherein a transition curve is coupled between the top surface of the airbag base and the third side surface, the transition curve smoothly coupling the top surface and the third side surface.

27. The conformable assembly of claims 24 or 25, wherein the top surface of the bladder base is an arcuate surface, the arcuate surface being an outwardly convex arcuate surface with a medial position higher than a lateral position.

28. The conformable assembly of claims 21 or 22, wherein the communication channel is a plurality of channels, the plurality of channels being disposed within the bladder base.

29. The utility model provides a laminating method of curved surface apron and flexible screen which characterized in that includes:

Fixing the curved surface cover plate on the cover plate fixing seat;

30. A method of conforming a curved cover sheet to a flexible screen according to claim 29 further comprising, after said continuing to move either said conforming assembly or said clamping assembly in a first direction while moving said opposed sets of said clamping members to bring said opposed sets of said clamping members into proximity so that said carrier strip conforms to the outer surface of said bladder:

and adjusting the position of the alignment table, wherein the alignment table moves to drive the clamping assembly arranged on the alignment table to move so that the flexible screen is aligned with the curved cover plate.

31. A method of conforming a curved cover sheet to a flexible screen according to claim 29 further comprising the step of, prior to said continuing to move either the conforming assembly or the clamping assembly in the first direction while moving the opposed sets of the clamping members to bring the opposed sets of the clamping members into close proximity so that the carrier strip conforms to the outer surface of the bladder:

32. The method according to claim 31, wherein the adjusting of the position of the alignment stage causes the movement of a clamping member disposed on the alignment stage, so that the flexible screen is aligned with the curved cover plate, and further comprising:

33. A method of conforming a curved cover to a flexible screen according to claim 29 wherein the clamping assembly is moved in a first direction towards the cover mounting base whilst the bladder is filled with a filler medium until the flexible screen is progressively conformed from its centre to its edge to the curved cover.

34. The method of conforming a curved cover plate to a flexible screen of claim 29 further comprising:

moving the bladder base so that the bladder base is away from the carrier tape;

releasing the clamping of the carrier band by the clamping component;

and separating the carrier tape from the flexible screen.

35. A method of conforming a curved cover to a flexible screen according to claim 34 further comprising, between or after said moving said bladder seats:

releasing the filling medium in the balloon.

36. The method of claim 29, wherein before the step of filling the bladder with a filling medium until the flexible screen is gradually attached to the curved cover from the center to the edge, the method further comprises:

closing the upper cavity and the lower cavity;

and vacuumizing a closed space formed by closing the upper cavity and the lower cavity.