CN111862799A

CN111862799A - Laminating equipment and carrier film thereof

Info

Publication number: CN111862799A
Application number: CN201910346040.4A
Authority: CN
Inventors: 李敏; 孟令健
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-10-30

Abstract

The application provides a carrier film and laminating equipment. The bearing film comprises a first area and a second area, the second area surrounds the first area, the outer edge of the second area is overlapped with the outer edge of the bearing film, the first area comprises a plurality of connected side edges, every two adjacent side edges are connected to form a corner, the second area is provided with at least one group of notches, each group of notches are correspondingly located on one side, away from the center of the first area, of one corner of the first area and used for releasing stress generated by bending of the corner part of the first area and the adjacent area, and therefore the possibility that the corner part of the flexible workpiece generates wrinkles and bubbles in the process of being attached to the curved workpiece is reduced.

Description

Laminating equipment and carrier film thereof

Technical Field

The invention relates to the technical field of laminating processing, in particular to laminating equipment and a bearing film thereof.

Background

With the development of curved display technology, curved display screens are increasingly applied to electronic devices. Generally, a flexible screen needs to be attached to a curved workpiece to form a curved display screen, so that the display screen can be in a 3D form. However, the corner portion of the flexible screen is prone to generate wrinkles, bubbles and other defects due to bending during the bonding, and the bonding precision and yield are affected.

Disclosure of Invention

The technical problem to be solved by the embodiments of the present application is to provide a carrier film and a bonding apparatus for improving bonding precision and yield.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, an embodiment of the present application provides a carrier film, where the carrier film includes a first region and a second region, the second region is disposed to surround the first region, and an outer edge of the second region coincides with an outer edge of the carrier film. The first region includes a plurality of joined side edges, each adjacent two of the side edges joined to form a corner. The second area is provided with at least one group of gaps, and each group of gaps are correspondingly positioned on one side of one corner of the first area, which is far away from the center of the first area.

Each group of notches corresponds to one corner. In this embodiment, the carrier film is applied to the laminating apparatus. The laminating equipment is used for laminating the flexible workpiece and the curved surface workpiece together. The corner of the second area corresponding to the first area is provided with a group of notches, and the notches can release stress generated by bending the corner of the first area and the area nearby the corner, so that the possibility that the corner of the flexible workpiece is folded when being attached to a curved workpiece to generate wrinkles and bubbles is reduced, and the attaching precision and the attaching yield are improved.

In one embodiment, the notch extends to the outer edge of the carrier film along a direction away from the center of the first region, that is, a partial edge of the notch is formed by the outer edge of the second region, so that the deformability of the carrier film can be improved, the stress release effect of the notch can be improved, and the possibility that wrinkles and bubbles are generated when the corner of the flexible workpiece is bent while being attached to the curved workpiece can be further reduced.

In one embodiment, the single group of notches includes at least two notches, and the at least two notches are arranged at intervals along the extending direction of the edge of the corner of the first area so as to enhance the stress releasing effect of the notches.

In one embodiment, the notch includes a first end and a second end that are opposite to each other, and the width of the first end is smaller than that of the second end, wherein the second end is closer to the middle of the corner edge of the first region relative to the first end. When the corner part of the first region is bent, the middle part of the corner of the first region is easier to be extruded in multiple directions, the width of the second end of the notch is large, the stress releasing effect of the notch can be improved when the middle part of the corner of the first region is extruded in different directions, and the possibility that the middle part of the corner of the flexible workpiece is attached to the curved surface workpiece to generate folds and bubbles is further reduced.

When the flexible workpiece is fixed on the bearing film, the edge of the corner of the flexible workpiece forms a first orthographic projection on the bearing film along the direction perpendicular to the bearing film, the notch comprises a first end and a second end which are arranged oppositely, the width of the first end is smaller than that of the second end, and the second end is closer to the middle part of the first orthographic projection relative to the first end. When the corner part of the flexible workpiece is attached to the curved surface workpiece, the middle part of the flexible workpiece, which is adjacent to the corner edge, is extruded in different directions, and the width of the second end of the notch is larger, so that the influence of the bearing film on the flexible workpiece is reduced, and the attachment precision and the attachment yield are further improved.

In an embodiment, the indentation comprises one of a through hole, a groove, a seam. When the notch is the through hole that link up the carrier film setting, can increase the deformability of carrier film to interference when the carrier film is buckled to the corner region of flexible workpiece can be reduced, thereby improve laminating precision and yield.

The notch is a groove (not penetrating through the bearing film) so as to reduce the possibility of wrinkles and bubbles generated by bending the flexible workpiece and attaching the flexible workpiece, and improve the strength of the bearing film.

The notch is a seam, the seam comprises two oppositely arranged edges, the two edges of the seam are contacted with each other when not stressed, and at least part of the two edges of the seam are arranged at intervals when the seam is stressed and bent. When the area of the gap of the bearing film is not stressed, the two edges of the seam are contacted with each other to be in a closed state when not stressed. The seam can be obtained by cutting the carrier film with a tool such as a knife. At least part of the two edges of the seam are set in a forced bending time interval to relieve stress. The notch can reduce the possibility that the corner part of the flexible workpiece is attached to the curved workpiece to generate wrinkles and bubbles, and meanwhile, the strength of the bearing film is improved. In addition, the gap is a seam, so that the manufacturing of the bearing film can be simplified.

In an embodiment, a partial edge of the corner of the first region forms at least a partial edge of the notch, so that the matching degree between the contour of the notch and the contour of the corner edge of the first region is improved, stress can be released as soon as possible when the corner region of the first region is stressed and bent, the possibility of generating wrinkles and bubbles when the corner region of the flexible workpiece is bent in the attaching process is further reduced, and the attaching precision and the attaching yield are improved.

In this embodiment, when the flexible workpiece is fixed on the carrier film, the first orthographic projection of the edge of the corner of the flexible workpiece on the carrier film along the direction perpendicular to the carrier film is at least partially located on the edge of the notch, so that the edge contour shape of the notch is at least partially identical to the corner edge contour of the flexible workpiece, and the attaching precision and the attaching yield are further improved.

In an embodiment, the contour of the notch includes a bent edge section, and a partial edge of the corner of the first region and the bent edge section are located in the same arc, so as to reduce the possibility that the edge of the notch is broken after the carrier film is bent for multiple times, thereby improving the bonding accuracy and the bonding yield.

In this embodiment, when the flexible workpiece is fixed on the carrier film, the first orthographic projection and the bent edge section are located in the same arc, so that the matching degree of the shapes of the carrier film and the flexible workpiece is improved, the influence of the carrier film on the flexible workpiece is reduced, and the attaching precision and the attaching yield are further improved.

In one embodiment, the notch extends along a corner edge of the first region.

In one embodiment, at least one side edge of the first region comprises a curved edge that is concave towards the inside of the first region, the curved edge being arranged spaced apart from a corner of the first region, the second region further being provided with at least one first opening, the first opening being arranged spaced apart from the indentation, the curved edge being arranged partially around the first opening. The bent edge is surrounded into a groove-shaped structure, when the bearing film is stressed and bent, the first opening can release stress generated by bending of the area near the bent edge of the first area, and the possibility that folds and bubbles are generated when the part near the first hollow-out area of the flexible workpiece is bent is reduced, so that the attaching precision and the attaching yield are improved.

In an embodiment, at least part of the bent edge forms at least part of the edge of the first opening, so that the matching degree of the shapes of the bearing film and the flexible workpiece is improved, stress can be released as soon as possible when the bearing film is stressed and bent, the influence of the bearing film on the flexible workpiece is reduced, the possibility of generating wrinkles and bubbles when the edge area of the flexible workpiece is bent in the attaching process is further reduced, and the attaching precision and the attaching yield are improved.

When the flexible workpiece is fixed on the bearing film, a second orthographic projection is formed on the bearing film along the direction perpendicular to the bearing film at the edge of the first hollow area of the flexible workpiece, and at least part of the second orthographic projection is located on the edge of the first opening.

In one embodiment, the first opening extends to the outer edge of the carrier film along a direction away from the center of the first region, so that the deformability of the carrier film is improved, interference of the carrier film on bending of the corner region of the flexible workpiece can be reduced, and the attaching precision and yield are improved.

In one embodiment, the second region is provided with at least one first opening, the carrier film is further provided with at least one second opening in the first region, each second opening is arranged adjacent to one side edge of the first region, and the second openings are arranged opposite to the corresponding first openings.

When the bearing film is stressed and bent, the first opening can release the stress generated by bending the area nearby the first opening. The bearing film corresponds to the first hollowed-out area of the edge, close to the flexible workpiece, of the second opening of the first area, and in the process that the flexible workpiece is attached to the curved surface workpiece, the possibility that wrinkles and bubbles are generated when the part, close to the first hollowed-out area, of the flexible workpiece is bent is reduced, so that attachment precision and attachment yield are improved.

In one embodiment, the second region is provided with a through hole, so that the positioning precision is improved, and the bonding precision and the bonding yield are improved.

In an embodiment, the first opening comprises at least one of a through hole, a groove, a seam.

In an embodiment, the number of the side edges of the first area is 4, two side edges are arranged oppositely, the other two side edges are arranged oppositely, and each corner is correspondingly provided with a notch, so that four side edges of the first area can be connected with external equipment through the second area.

In a second aspect, an embodiment of the present application provides a laminating apparatus, which includes a clamping mechanism, a carrying film as described above, and a pressing device, wherein the clamping mechanism is configured to clamp a second region of the carrying film, the carrying film is configured to fix a flexible workpiece, the carrying mechanism is located on one side of the carrying film and configured to fix a curved workpiece, and the pressing device is located on one side of the carrying film away from the carrying mechanism and configured to laminate the supported flexible workpiece with the curved workpiece.

Drawings

Fig. 1 is a side view of a laminating apparatus provided in a first embodiment of the present application.

Fig. 2 is a schematic plan view of a flexible workpiece according to a first embodiment of the present application.

Fig. 3 is a perspective view of a curved workpiece according to a first embodiment of the present disclosure.

Fig. 4 is a schematic plan view of a carrier film according to a first embodiment of the present disclosure.

Fig. 5 is a schematic plan view illustrating a carrier film clamped by a clamping assembly of the laminating apparatus shown in fig. 1.

Fig. 6 is a schematic view of a holding assembly of the laminating apparatus holding a carrier film.

Fig. 7 is a schematic view of a clamping assembly of the laminating apparatus tensioning the carrier film.

Fig. 8 is a schematic diagram of a flexible workpiece moving to a pre-fitting position relative to a curved workpiece.

FIG. 9 is a schematic view of a flexible workpiece in contact with a curved workpiece.

FIG. 10 is a schematic view of a flexible workpiece and a curved workpiece being bonded together.

Fig. 11 is a schematic plan view of a carrier film according to a second embodiment of the present application.

Fig. 12 is a schematic plan view of a carrier film according to a third embodiment of the present application.

Fig. 13a is a schematic plan view of a carrier film according to a fourth embodiment of the present application.

FIG. 13b is a schematic view of the region I shown in FIG. 13a when bent under force.

Fig. 14 is a schematic plan view of a carrier film according to a fifth embodiment of the present application.

Fig. 15 is a schematic plan view of a carrier film according to a sixth embodiment of the present application.

Fig. 16 is a schematic plan view of a carrier film according to a seventh embodiment of the present application.

Fig. 17a is a schematic plan view of a carrier film according to an eighth embodiment of the present application.

Fig. 17b is a schematic view of a flexible workpiece that can be secured to the first region of the carrier film shown in fig. 17 a.

Detailed Description

Referring to fig. 1, fig. 1 is a side view of a bonding apparatus according to a first embodiment of the present disclosure. The laminating apparatus 100 includes a laminating chamber 10, a clamping mechanism 20, a carrier film 30, a carrier mechanism 40, and a pressing device 50. The clamping mechanism 20, the carrying mechanism 40 and the pressing device 50 are all located in the fitting cavity 10. The holding mechanism 20 is used to hold the carrier film 30. The carrier film 30 is used to fix the flexible workpiece 101. The bearing mechanism 40 is used for fixing the curved surface workpiece 103. The pressing device 50 is used for supporting the flexible workpiece 101 and the curved workpiece 103 to be attached.

Referring to fig. 2, fig. 2 is a schematic plan view of a flexible workpiece. The flexible workpiece 101 has a substantially flat plate shape. The flexible workpiece 101 is a flexible display screen. It is understood that the flexible workpiece 101 may not be a flexible display screen, and the flexible workpiece 101 may be other flexible workpieces, for example, in some embodiments, the flexible workpiece 101 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). The flexible workpiece 101 includes four first corners 1011.

Referring to fig. 3, fig. 3 is a perspective view of a curved workpiece. The curved workpiece 103 includes a bottom surface 1031, four curved surfaces 1033, and four second corners 1035. The four curved surfaces 1033 are formed by extending and bending the four edges of the bottom surface 1031 to the same side. The four curved surfaces 1033 are disposed around the bottom surface 1035 and enclose an accommodating space 1036 (shown in fig. 1). The second corner 1035 is a portion where two adjacent curved surfaces 1033 meet. The curved surface workpiece 103 is typically made of glass, plastic, ceramic, or the like. The bottom surface 1031 of the curved surface workpiece 103 forms an included angle with each curved surface 1033. Correspondingly, the size of the flexible workpiece 101 and the size of the curved workpiece 103 are matched. The flexible workpiece 101 can be attached to the inner surface of the receiving space 1036 of the curved workpiece 103, thereby forming a curved structure with four curved surfaces.

Referring to fig. 1 again, the bonding chamber 10 includes a first chamber 11 and a second chamber 13. The first chamber 11 can move relative to the second chamber 13 and can be combined together to form a closed space. In the present embodiment, the first cavity 11 and the second cavity 13 are merged together along a first direction (a Z direction as shown in the figure). In some embodiments, the conformable chamber 10 may also be an integrally formed chamber.

The clamping mechanism 20 is disposed in the first cavity 11 and includes a clamping assembly 23 and a first driving member 25 for driving the clamping assembly 23 to move along a second direction (the X direction shown in the figure). In this embodiment, the second direction is perpendicular to the first direction. It is to be understood that the first direction is not limited to being perpendicular to the second direction. The clamping assembly 23 includes a first clamping member 231, a second clamping member 233 and a second driving member 235. The first clamping member 231 and the second clamping member 233 are both located in the first cavity 11. The first clamping member 231 is provided with a positioning post 2311 for positioning the carrier film 30, so that the carrier film 30 can be conveniently assembled on the clamping structure 20. The second clamping member 233 is fixed to the second driving member 235 and disposed toward the first clamping member 231. The second clamping member 233 has a positioning slot 2331 corresponding to the positioning post 2311 for receiving the positioning post 2311. The second driving member 235 is used for driving the second clamping member 233 to move relative to the first clamping member 231 along the first direction so as to clamp or release the carrier film 30. One surface of the first clamping member 231 facing the second clamping member 233 is provided with a buffering member 237, and one surface of the second clamping member 233 facing the first clamping member 231 is provided with a buffering member 237, so that the first clamping member 231 and the friction force between the second clamping member 233 and the carrier film 30 are enhanced through the buffering members 237, and the clamping effect is enhanced. Further, damage to the carrier film 30 by the first and

second clamping members

231 and 233 is avoided. In this embodiment, the buffer 237 may be made of an elastic material such as rubber.

Further, the clamping mechanism 20 further includes a fixing plate 238 located in the first cavity 11, and the first clamping member 231 and the second driving member 235 are fixed on the fixing plate 238. The first driving member 25 is fixedly connected to the fixing plate 238 to drive the first clamping member 231 and the second clamping member 233 to move.

The carrier film 30 is clamped and fixed between the first clamping member 231 and the second clamping member 233. The carrier film 30 is made of a flexible material having elasticity, such as Polyethylene terephthalate (PET) or the like. Referring to fig. 4, fig. 4 is a schematic plan view of a carrier film according to a first embodiment of the present disclosure.

The carrier film 30 includes a first region 301 and a second region 303. The first region 301 is used to secure the flexible workpiece 101. The second region 303 is disposed around the first region 301. The outer edge of the second region 303 coincides with the outer edge of the carrier film 30. The first region 301 includes a plurality of side edges 3010 that are connected in series. Each adjacent two side edges 3010 meet to form a corner 3011. Each side edge 3010 is disposed in connection with the second region 303. The second region 303 is used for connection with the gripper mechanism 20 of the sticking apparatus 100. The second region 303 is provided with at least one set of notches 31, and each set of notches 31 is correspondingly positioned on one side of one corner 3011 of the first region 301 far away from the center of the first region 301. Each set of notches 31 includes one notch 31. It will be appreciated that the number of notches 31 in each set of notches 31 may be 1, 2, 3 or more. In some embodiments, a set of notches 31 are provided in the outer edge of one or more of the corners 3011.

When the flexible workpiece 101 is bonded to the curved workpiece 103, the notch 31 can release stress generated by bending the corner 3011 of the first region 301 of the carrier film 30 and the region near the corner, so that the possibility of wrinkles and bubbles generated when the region at the first corner 1011 of the flexible workpiece 103 is bent is reduced, and bonding accuracy and bonding yield are improved.

In the present embodiment, the first region 301 is matched to the flexible workpiece 101, and the first region 301 is substantially the same as a region covered when the flexible workpiece 101 is fixed to the carrier film 30. In other words, when the flexible workpiece 101 is fixed on the carrier film 30, the orthogonal projection area of the flexible workpiece 101 on the carrier tape 30 along the direction perpendicular to the carrier tape 30 is substantially the same as the first area 301. The first region 301 may be coated with a glue layer for adhesively securing the flexible workpiece 101. It will be appreciated that the flexible workpiece 101 may also be secured by providing suction cups or the like in the first region 301. In some embodiments, the first region 301 may be identified by a marker, such as ink.

In this embodiment, the first region 301 includes four side edges 3010, two of the side edges 3010 are disposed opposite to each other, and the other two side edges 3010 are disposed opposite to each other, and the first region 301 has a substantially rounded rectangular shape. It is understood that the shape of the first region 301 is not limited. The notches 31 are obtained by cutting out corners (notch type) of the rectangular film layer, so that the carrier film 30 is substantially in a cross shape. The notch 31 extends to the outer edge of the carrier film 30 in a direction away from the center of the first region 301. The direction away from the center of the first region 301 may be a direction away from the center of the first region 301, and may be, for example, a direction along a diagonal line of the first region 301.

Further, the second region 303 comprises 4 connection regions 3031. Part of the outer edges of two adjacent connection regions 3031 constitutes the edge of the notch 31. Each connection region 3031 is connected to a corresponding one of the side edges 3010. It is understood that the notch 31 includes at least one of a through hole, a groove and a seam, for example, a partial area of the notch 31 is a through hole, a partial area of the notch 31 is a groove, and a partial area of the notch 31 is a seam.

As shown in fig. 4, the length (in the X direction in fig. 4) of the connection region 3031 in contact with the shorter side edge 3010 of the first region 301 is approximately 60mm, and the width (in the Y direction in fig. 4) of the connection region 3031 in contact with the shorter side edge 3010 of the first region 301 is approximately 50 mm; the length (in the X direction in fig. 4) of the connection region 3031 in contact with the longer side edge 3010 of the first region 301 is approximately 80mm, and the length (in the X direction in fig. 4) of the connection region 3031 in contact with the longer side edge 3010 of the first region 301 is approximately 50 mm. It is to be understood that the length, width, and other dimensions of each connection region 3031 are not limited and may be set as desired.

Part of the edge of the corner 3011 of the first region 301 constitutes at least part of the edge of the notch 31. When the flexible workpiece 101 is fixed on the carrier film 30, a first orthographic projection of the edge of the first corner 1011 of the flexible workpiece 101 on the carrier film 30 along a first direction perpendicular to the carrier film 30 is at least partially located on the edge of the notch 31, so that the edge contour of the notch 31 is at least partially the same as the edge contour of the first corner 1011 of the flexible workpiece 101, and the attaching accuracy and the attaching yield are further improved.

It will be appreciated that, rather than defining the edges of the corners 3011 of the first region 301 to at least partially coincide with the edges of the notches 31, the edges of the notches 31 may be spaced from the edges of the corners 3011 of the first region 301.

It is understood that, the edge of the first corner 1011 of the flexible workpiece 101 is not limited to be at least partially located on the edge of the notch 31 along the first orthogonal projection perpendicular to the carrier film 30 on the carrier film 30, and the notch 31 is adjacent to the first corner 1011 when the flexible workpiece 101 is fixed on the carrier film 30.

The edge profile of the notch 31 comprises a bent-over edge section 311, the bent-over edge section 311 constituting at least part of the edge of the corner 3011 of the first region 301. I.e. the edge profile of the notch 31 comprises a bent edge section 311 matching the first corner 1011 of the flexible workpiece 101. A first orthographic projection of an edge of the first corner 1011 of the flexible workpiece 101 on the carrier film 30 along a first direction perpendicular to the carrier film 30 coincides with the bent edge section 311. Because the bent edge section 311 has the same profile as the first corner 1011 of the flexible workpiece 101, the influence of the carrier film 30 on the first corner 1011 of the flexible workpiece 30 during the attachment is further reduced, and the attachment accuracy and the attachment yield are improved. The first corner 1011 is substantially a 90 degree radius and the inflection edge segment 311 is substantially a 90 degree arc. It is understood that the first corner 1011 of the flexible workpiece 101 is not limited to be a 90-degree rounded corner, but may be a pointed corner or other shapes, the bent edge section 311 is not limited to be at least part of the edge of the corner 3011 of the first region 301, the notch 31 is disposed adjacent to the corner 3011 of the first region 301, and when the flexible workpiece 101 is fixed to the carrier film 30, the notch 31 can release the stress generated by the completion of the corner 3011 of the first region 301.

The flexible workpiece 101 is also provided with a first hollowed-out region 1013 (shown in fig. 2) disposed adjacent to an edge of the flexible workpiece 101. The curved surface workpiece 103 has a second hollow-out region 1037 (shown in fig. 3) corresponding to the first hollow-out region 1013. The second hollow area 1037 extends from a curved surface 1033 to the bottom surface 1031. In this embodiment, the first hollow-out region 1013 and the second hollow-out region 1037 are both open slots.

One of the side edges 3010 of the first region 301 includes a curved edge 3013 that is concave toward the interior of the first region 301. The curved edge 3013 encloses a trough-like structure. The bent edge 3013 is disposed at a corner 3011 of the first region 301, and the second region 303 is further provided with a first opening 33. The first opening 33 is spaced from the notch 31. The bent edge 3013 is disposed partially around the first opening 33. The curved edge 3013 is disposed corresponding to the first hollowed-out region 1013. The first opening 33 is disposed adjacent to the bent edge 3013 of the first region 301, and when the carrier film 30 is bent under a stress, the first opening 33 can release stress generated by bending in the region near the bent edge 3013 of the first region 301, so that the possibility of generating wrinkles and bubbles when the portion near the bent edge 3013 of the flexible workpiece 101 is bent is reduced, and the bonding accuracy and the bonding yield are improved. It will be appreciated that at least one side edge 3010 of the first region 301 comprises a curved edge 3013 recessed towards the interior of the first region 301, and that the second region 303 is also provided with at least one first opening 33.

In the present embodiment, the partially bent edge 3013 of the first region 301 constitutes at least a partial edge of the first opening 33. The edge of the first hollow-out region 1013 of the flexible workpiece 101 is at least partially located on the edge of the first opening 1013 along a second orthographic projection of the flexible workpiece on the carrier film 30 in the direction perpendicular to the carrier film 30. It can be understood that, the edge of the first hollow-out region 1013 of the flexible workpiece 101 is not limited to be at least partially located on the edge of the first opening 1013 in the second orthographic projection of the flexible workpiece 101 on the carrier film 30 along the direction perpendicular to the carrier film 30, and when the flexible workpiece 101 is fixed on the carrier film 30, the first opening 1013 is adjacent to the first hollow-out region 1013.

It is understood that the first opening 33 may have the same contour shape as the first hollow-out region 1013.

It is understood that the first hollow-out region 1013 and the second hollow-out region 1037 can be through holes.

The carrier film 30 further has a through hole 35 in the second region 303. The positioning posts 2311 of the first clamping member 231 penetrate through the corresponding through holes 35, so as to conveniently clamp the carrier film 30 between the first clamping member 231 and the second clamping member 233. It is understood that the number of the through holes 35 may be one, two or more, and the arrangement of the through holes 35 is not limited. In some embodiments, the through-holes 35 may be omitted.

Referring to fig. 5, fig. 5 is a schematic plan view illustrating a carrier film clamped by a clamping assembly of the bonding apparatus shown in fig. 1. The 4 connection regions 3031 are disposed around the first region 301. Each connection region 3031 is disposed corresponding to one side edge 3010 of the first region 303. When the flexible workpiece 101 is secured to the first region 301, 4 connection regions 3031 are disposed around the flexible workpiece 101. The number of clamping assemblies 23 is 4, each clamping assembly 23 clamping one connection region 3031. Thus, the 4 clamping assemblies 23 can respectively drive one side edge of the flexible workpiece 101 on the carrier film 30 to bend, so that the problem that the edge of the flexible workpiece 101 is attached before the edge of the curved surface 1033 of the curved surface workpiece 103, so that air bubbles are difficult to discharge, is avoided in the attaching process.

It will be appreciated that the number of side edges 3010 of the first region 301 is not limited to 4, but may be 3, 5 or more; the number of the connection regions 3031 is not limited, and may be 3, 5 or more, for example, and the number of the connection regions 3031 is not limited, for example, the side edge 3010 of one first region 301 may be connected to one connection region 3031, and the side edge 3010 of one first region 301 may be connected to a plurality of connection regions 3031 arranged at intervals. The plurality of connecting regions 3031 are arranged around the first region 301 to clamp the carrier film 30 from multiple directions, so that the clamping assembly 23 can drive the side edge of the flexible workpiece 101 on the carrier film 30 to bend, thereby avoiding the problem that the edge of the flexible workpiece 101 is attached before the edge of the curved surface 1033 of the curved workpiece 103, so that air bubbles are difficult to discharge.

It is understood that the number of the clamping assemblies 23 is not limited, the structure of the clamping mechanism 20 shown in fig. 1 is only an example, and the structure of the clamping mechanism 20 is not limited in the present application, for example, the clamping mechanism 20 includes a plurality of clamping jaws, and the clamping mechanism 20 can clamp and fix the carrier film 30.

Referring to fig. 1 again, the supporting mechanism 40 is disposed in the second cavity 13 and faces the holding mechanism 20. The support mechanism 40 is located on one side of the support film 30. The bearing mechanism 40 is provided with a fixing groove 41 for fixing the curved surface workpiece 103. The inner surfaces of the fixing grooves 41 are matched with the outer surfaces of the curved workpieces 103, which are far away from the accommodating space 1036, so that the possibility that the curved workpieces 103 are damaged by pressure when being attached to the flexible workpiece 101 is reduced. It will be appreciated that in some embodiments, the carriage mechanism 40 is capable of moving in a first direction within the second cavity 13. The curved surface workpiece 103 may be fixed in the fixing groove 41 by vacuum suction, adhesion, or the like, but is not limited thereto.

The pressing device 50 is located on a side of the carrier film 30 away from the carrier mechanism 40. The pressing device 50 includes a pressing driving member 51 and a pressing pad 53 connected to the pressing driving member 51. The pressing driving member 51 is located outside the first cavity 11 and configured to drive the pressing pad 53 to move along a first direction, so as to attach the flexible workpiece 101 to the curved workpiece 103. The press pad 53 is located in the first cavity 11. The pressing pad 53 includes a contact surface 531 for contacting the carrier film 30. In one embodiment, the contact surface 531 is a curved surface, and the position of the contact surface 531 corresponding to the center of the flexible workpiece 101 is higher than the other positions of the contact surface 531 relative to the bottom of the first cavity 11. In the present embodiment, the pressing pad 53 is made of an elastic material, such as silicone, so that when the flexible workpiece 101 is bonded to the curved workpiece 103, the bonding force gradually increases from the center of the curved workpiece 103 (i.e., the center of the bottom surface 1031) to the curved surface 1033. It is understood that the contact surface 531 may also be planar. It will be appreciated that compression device 50 may be a fluid compression device and compression pad 53 may be a bladder for filling with a fluid.

The laminating apparatus 100 further includes an alignment device 60 located outside the laminating chamber 10. The fixing plate 238 of the clamping mechanism 20 is fixedly connected with the aligning device 60 so as to be capable of moving along with the aligning device 60. The alignment device 60 is used for bonding and aligning the flexible workpiece 101 and the curved surface workpiece 103. In the present embodiment, the positioning device 60 is a UVW stage, and is driven to move in a plurality of directions and rotate around an axis (e.g., an axis parallel to the first direction). Through the movement and rotation of the alignment device 60, the clamping mechanism 20 arranged on the alignment device 60 can be driven to move synchronously, and the clamping mechanism 20 can drive the flexible workpiece 101 on the carrier film 30 to move synchronously, so that the alignment device 60 can drive the flexible workpiece 101 to move to align the flexible workpiece 101 and the curved surface workpiece 103, and the orthographic projection of the flexible workpiece 101 on the curved surface workpiece 103 along the first direction is located on the curved surface workpiece 103. In this embodiment, before the flexible workpiece 101 and the curved workpiece 103 are aligned, the position information of the flexible workpiece 101 and the curved workpiece 103 is obtained by the CCD camera, and the distance in the direction in which the alignment device 60 needs to move and/or rotate is calculated and obtained according to the position information of the flexible workpiece 101 and the curved workpiece 103, so as to position the flexible workpiece 101 and the curved workpiece 103.

The laminating apparatus 100 further includes a vacuum extractor 70. The vacuumizing device 70 is connected with the second cavity 13 and is used for vacuumizing a closed space formed by the combined first cavity 11 and the combined second cavity 13, so that the laminating process of the flexible workpiece 101 and the curved workpiece 103 can be performed under a vacuum condition, bubbles between the flexible workpiece 101 and the curved workpiece 103 are reduced in the laminating process, the laminating process can be performed in a dust-free environment, and impurities are prevented from being present between the flexible workpiece 101 and the curved workpiece 103. It is understood that the vacuum device 70 may be connected to the first chamber 11 and/or the second chamber 13.

The attaching device 100 further includes a pressure sensor 80 disposed on the outer side wall of the second cavity 13, and is configured to detect a pressure applied to the curved workpiece 103 when the curved workpiece 103 is attached to the flexible workpiece 101.

It is understood that the attaching device 100 may omit the attaching chamber 10, i.e., the curved workpiece 103 and the flexible workpiece 101 are not limited to be attached in a closed environment.

The application of the laminating apparatus 100 to laminate the flexible workpiece 101 and the curved workpiece 103 will be briefly described below.

Step 101, the flexible workpiece 101 is fixed on the bearing film 30, and the curved workpiece 103 is fixed on the bearing mechanism 40.

The carrier film 30 has a notch 31 corresponding to the first corner 1011 of the flexible workpiece 101. In this embodiment, the flexible workpiece 101 is fixed to the first region 301 of the carrier film 30 by an adhesive layer. After the flexible workpiece 101 and the carrier film 30 are positioned by the CCD device, the flexible workpiece 101 is fixed to the first region 301 of the carrier film 30.

In step 102, referring to fig. 6, the holding assembly 23 holds and fixes the carrier film 30, and the flexible workpiece 101 is disposed toward the curved workpiece 103. The second driving member 235 drives the second clamping member 233 to move forward in the first direction (e.g., the positive direction of the Z axis in fig. 6) to move away from the first clamping member 231. The through holes 35 of each second region 303 of the carrier film 30 are disposed on the corresponding positioning posts 2311 of the first clamping member 231. The second driving unit 235 drives the second clamping member 233 to move in a first direction negative direction (e.g., a Z-axis negative direction in fig. 6) to move toward the first clamping member 231, so as to clamp the carrier film 30 by the second clamping member 233 and the first clamping member 231.

The 4 connection regions 3031 are arranged around the first region 301, and each clamping assembly 23 clamps one connection region 3031, i.e. four clamping assemblies 23 are respectively clamped on four sides of the carrier film 30, thereby clamping the carrier film 30 along 4 different directions.

In step 103, referring to fig. 7, the movable clamping assembly 23 moves away from the flexible workpiece 101 along a second direction (e.g., the X direction shown in fig. 7) to tension the carrier film 30. In the present embodiment, the first driving member 25 drives the clamping assembly 23 to move in the second direction away from the flexible workpiece 101 (e.g., by 0.1mm to 1 mm). By tensioning the carrier film 30, the flexible workpiece 101 attached to the carrier film 30 is flattened.

Step 104, the first cavity 11 and the second cavity 13 are closed to form a sealed space.

And 105, vacuumizing a closed space formed by closing the first cavity 11 and the second cavity 13.

The vacuum-pumping means 70 communicating with the enclosed space is activated to evacuate the enclosed space by the vacuum-pumping means 70. In the application, after the airtight space is vacuumized, subsequent laminating operation (namely the laminating process of the flexible workpiece 101 and the curved surface workpiece 103) is performed, so that the phenomenon that in the laminating process, dust and impurities in the air are adsorbed between the flexible workpiece 101 and the curved surface workpiece 103 can be avoided, and the generation of bubbles between the flexible workpiece 101 and the curved surface workpiece 103 can be reduced.

Referring to fig. 8, in step 106, the flexible workpiece 101 moves to a pre-fitting position relative to the curved workpiece 103. In the present embodiment, for example, the flexible workpiece 101 is moved to the first pre-bonding position in the positive direction of the first direction (the Z direction shown in fig. 8) and the positive direction of the second direction (the X direction shown in fig. 8), and the curved workpiece 103 is moved to the second pre-bonding position in the negative direction of the first direction. It is understood that the preset attaching position can be reached by moving at least one of the flexible workpiece 101 and the curved workpiece 103.

In step 107, referring to fig. 9, the flexible workpiece 101 is contacted with the curved workpiece 103. In this embodiment, the pressing pad 53 moves toward the curved workpiece 103 in the forward direction of the first direction (the Z direction shown in fig. 9), and the clamping assembly 23 is also driven by the first driving member 25 to move toward the curved workpiece 103 in the forward direction of the first direction until the flexible workpiece 101 on the carrier film 30 contacts the curved workpiece 103.

Here, when the flexible workpiece 101 is in contact with the curved workpiece 103, the curved workpiece 103 is only in contact with the flexible workpiece 101 and is not subjected to pressure from the flexible workpiece 101. The pressing pad 53 moves towards the curved workpiece 103 along the first direction, and the clamping assembly 23 is driven by the first driving member 25 to move towards the curved workpiece 103 along the first direction, so as to prevent the carrier film 30 from being damaged due to excessive deformation.

In step 108, referring to fig. 10, the pressing pad 53 continues to move toward the curved workpiece 103 by a distance Z1 in the positive direction in the first direction (the Z direction shown in fig. 10), the clamping assembly 23 moves by a distance Z2 in the negative direction in the first direction (the X direction shown in fig. 10), wherein Z2 is less than Z1, and the clamping assembly 23 moves away from the flexible workpiece 101 by a distance X2 in the second direction until the flexible workpiece 101 and the curved workpiece 103 are completely attached. Where Z2 is Z1-a, illustratively a ranges from approximately 0.3mm to 3 mm.

The pressing pad 53 continues to move towards the curved workpiece 103 by a distance Z1, so that the flexible workpiece 101 is attached to the bottom surface 1011 of the curved workpiece 103; the clamping assembly 23 moves away from the curved workpiece 103 by a distance Z2 in a direction opposite to the first direction to bend the carrier film 30 to follow the pressing pad 53, thereby bending the edge portion of the flexible workpiece 101 until the edge portion of the flexible workpiece 101 is completely attached to the curved surface 1033 of the curved workpiece 103.

When the edge portion of the flexible workpiece 101 is bonded to the curved surface 1033, since the carrier film 30 is provided with the notch 31 corresponding to the first corner 1011 of the flexible workpiece 101, the notch 31 can release the stress of the corner 3011 of the first region 301 and the region near the corner 3011, thereby reducing the possibility of generating defects such as wrinkles and bubbles when the region near the first corner 1011 of the flexible workpiece 101 is bonded to the second corner 1035 of the curved surface workpiece 103 to form a curved structure, and improving the bonding accuracy and the bonding yield.

The bearing film 30 is provided with the first opening 33 corresponding to the first hollow-out area 1013 of the flexible workpiece 101, when the flexible workpiece 101 is attached to the curved workpiece 103, the first opening 33 can release the stress of the bearing film 30 corresponding to the area of the flexible workpiece 101 near the first hollow-out area 1013, so as to reduce the possibility of generating defects such as wrinkles and bubbles when the area near the first hollow-out area 1013 of the flexible workpiece 101 is attached to the curved surface 1033 of the curved workpiece 103 to form a curved structure, thereby improving the attachment accuracy and the attachment yield.

At step 109, the gripping assembly 23 is moved in a forward direction Z3 in a first direction (the Z direction as shown in fig. 10). Due to the forward movement distance Z3 of the clamping assembly 23 in the first direction, the carrier film 30 is relaxed, and sudden stress changes of the flexible workpiece 101 caused by sudden release of the carrier film 30 in a tensioned state are avoided.

At step 110, the holding assembly 23 releases the carrier film 30.

In step 111, the first chamber 11 is separated from the second chamber 13.

And 112, separating the carrier film 30 from the flexible workpiece 101.

In some embodiments, the curved workpiece 103 and the flexible workpiece 101 after the lamination are moved to a separation chamber for separation.

After step 103 and before step 104, steps of: and adjusting the position of the alignment device 60 to align the flexible workpiece 101 with the curved workpiece 103. The alignment means that a first orthographic projection of the flexible workpiece 101 on the curved workpiece 103 along the first direction is located in the curved workpiece 103, so that the flexible workpiece 101 can be attached to the inner surface of the curved workpiece 103 exactly when moving to the curved workpiece 103 along the first direction.

Specifically, before the flexible workpiece 101 is aligned with the curved workpiece 103, the position information of the flexible workpiece 101 and the curved workpiece 103 is obtained by the CCD camera, and the distance in the direction in which the aligning device 40 needs to move and/or rotate is calculated by the position information of the flexible workpiece 101 and the curved workpiece 103, and then the aligning device 40 is moved by a certain distance in the second direction and/or the third direction, or the aligning device 40 is rotated by a certain angle, so that the clamping assembly 50 disposed on the aligning device 40 is driven to move synchronously, and the flexible workpiece 101 and the curved workpiece 103 clamped on the clamping assembly 23 are positioned. In this embodiment, after obtaining the position information of the flexible workpiece 101 and the curved workpiece 103, the CCD camera moves out of the first cavity 11 and the second cavity 13, so as to avoid the CCD camera occupying the volume of the enclosed space.

In this embodiment, the carrier film 30 is firstly tensioned in step 103 to flatten the flexible workpiece 101, so that the flexible workpiece 101 and the curved workpiece 103 can be aligned more accurately.

It is understood that the attaching step of the attaching apparatus 100 is not limited to the above steps, and can be adjusted according to actual needs, for example, the step 110 and the step 112 are omitted.

Referring to fig. 11, fig. 11 is a schematic plan view of a carrier film according to a second embodiment of the present disclosure. The carrier film provided by the second embodiment is substantially the same as the carrier film provided by the first embodiment, except that the single-set notch 31 includes two notches 31, and the two notches 31 are arranged at intervals along the extending direction of the edge of the corner 3011 of the first region 301. The second region 303 is disposed around the first region 301, the notch 31 is a through hole, and an edge of the notch 31 does not extend to an outer edge of the carrier film 30. The notch 31 includes a first end 311 and a second end 313 that are disposed opposite to each other, the width of the first end 311 is smaller than that of the second end 313, and the second end 313 is closer to the middle of the edge of the corner 3011 of the first region 311 relative to the first end 311.

When the corner part of the flexible workpiece is attached to the curved surface workpiece, the middle part of the flexible workpiece, which is adjacent to the corner edge, is extruded by different parts, and the width of the second end 313 of the notch 31 is larger, so that the influence of the bearing film 30 on the flexible workpiece is reduced, and the attachment precision and the attachment yield are further improved.

The profile of the notch 31 includes a bent edge section 315. Part of the edge of the corner 3011 of the first region 301 constitutes at least part of the inflection edge segment 315. A first orthographic projection of an edge of the first corner of the flexible workpiece onto the carrier film 30 along a first direction perpendicular to the carrier film at least partially coincides with the bent edge segment 315.

Each first corner 1011 corresponds to a set of notches 31. Illustratively, in the same set of notches 31, the bending edge segment 315 of one notch 31 extends along the arc where it lies to the bending edge segment 315 of another notch 31 over an arc length ranging from about 1 mm to about 10 mm.

It will be appreciated that the extent of the arc length of the bending edge segment 315 of one notch 31 extending along the arc on which it lies to the bending edge segment 315 of another notch 31 is not limiting.

It is understood that the single group of notches 31 includes two or more notches 31, and at least two notches 31 are spaced apart along the extension direction of the edge of the corner 3011 of the first region 301.

Referring to fig. 12, fig. 12 is a schematic plan view of a carrier film according to a third embodiment of the present application. The carrier film provided by the third embodiment is substantially the same as the carrier film provided by the second embodiment, except that the outer edge of each corner 3011 of the first region 301 is disposed corresponding to a set of notches 31. The notch 31 extends along the outer edge profile of the corner 3011. At least part of the outer edge of the corner 3011 constitutes the bent edge section 315 of the notch 31.

Referring to fig. 13a-13b, fig. 13a is a schematic plan view of a carrier film according to a fourth embodiment of the present application, and fig. 13b is a schematic view of a region I shown in fig. 13a when being bent under a force. The carrier film provided by the fourth embodiment is substantially the same as the carrier film provided by the second embodiment, except that the notches 31 are seams. The notch 31 includes two oppositely disposed edges 317, the two edges 317 of the notch 31 contact each other when unstressed, and at least a portion of the two edges 317 of the notch 31 are disposed at the forced bending time interval. The notch 31 is formed by cutting the carrier film 30 with a tool such as a cutter. The notch 31 may be a seam formed along the contour of an outer edge portion of the corner 3011 of the first region 301. When the carrier film 30 is not stressed, the notch 31 is in a closed state, i.e. the notch 31 does not form the first opening. When the area of the carrier film 30 where the notch 31 is located is bent by a force, two edges 317 of the notch 31 form an opening. It will be appreciated that the notches 31 may also be provided at spaced apart corners 3011 of the first region 301.

Referring to fig. 14, fig. 14 is a schematic plan view of a carrier film according to a fifth embodiment of the present application. The carrier film provided by the fifth embodiment is substantially the same as the carrier film provided by the fourth embodiment, except that the notches 31 are seams extending from the outer edge of the corner 3011 of the first region 301 to the outer edge of the carrier film 30.

Referring to fig. 15, fig. 15 is a schematic plan view of a carrier film according to a sixth embodiment of the present application. The carrier film provided by the sixth embodiment is substantially the same as the carrier film provided by the first embodiment, except that the first connection regions 3031 and the second connection regions 3033 are provided corresponding to the bent edges 3013 of the first regions 301. First connection region 3031 is fixedly connected to one end of curved edge 3013, and second connection region 3033 is fixedly connected to the other end of curved edge 3013. The first connection region 3031 is spaced apart from the second connection region 3033 to form a first opening 33. The first connection region 3031 is sized (e.g., the width of the end of the first connection region 3031 distal from the first region 301) to be coupled to the clamp assembly of the conformable apparatus, and the second connection region 3033 is sized (e.g., the width of the end of the second connection region 3033 distal from the first region 301) to be coupled to the clamp assembly of the conformable apparatus to achieve contouring of the flexible workpiece to the curved workpiece during conforming. It will be appreciated that each side edge of the first region 301 may be arranged in connection with a connecting region of two or more second regions. The first opening 33 extends to the outer edge of the carrier film 30 in a direction away from the center of the first region 301.

Referring to fig. 16, fig. 16 is a schematic plan view of a carrier film according to a seventh embodiment of the present application. The carrier film provided in the seventh embodiment is substantially the same as the carrier film provided in the first embodiment, except that the carrier film 30 omits the first opening, and the second region 303 is provided with a notch 31 at the corner 3011 of the first region 301. That is, the flexible workpiece fixed in the first region 301 of the carrier film 30 is not provided with a hollow region such as a through hole or a slot.

Referring to fig. 17a, fig. 17a is a schematic plan view of a carrier film according to an eighth embodiment of the present application. The carrier film provided by the eighth embodiment is substantially the same as the carrier film provided by the first embodiment, except that the carrier film 30 is provided with a second opening 37 in the first region 301, and the second opening 37 is correspondingly disposed adjacent to one side edge 3010 of the first region 301. The second opening 37 and the first opening 33 are located on both sides of one side edge 3010, respectively. In the present embodiment, the second opening 37 is a through hole.

Referring to fig. 17b, fig. 17b is a schematic view of a flexible workpiece that can be fixed in the first region shown in fig. 17 a. The flexible workpiece 101 is provided with a first hollowed-out area 1013. The first hollow-out region 1013 is a through hole. When the flexible workpiece 101 is fixed on the carrier film 30 in the first area 301, the first hollow area 1013 communicates with the second opening 37. When the flexible workpiece 101 is fixed on the carrier film 30 in the first area 301, an orthographic projection of the edge of the first hollow-out area 1013 of the flexible workpiece 101 on the carrier film 30 along the direction perpendicular to the carrier film 30 at least partially coincides with the edge of the second opening 37.

In one embodiment, the second region 303 is provided with at least one first opening 33, the carrier film 30 is further provided with at least one second opening 37 in the first region 301, each second opening 37 is arranged adjacent to one side edge 300 of the first region 301, and the second openings 37 are arranged opposite to the corresponding first openings 37.

The first opening 33 includes at least one of a through hole, a groove, and a seam.

The second opening 37 includes at least one of a through hole, a groove, and a seam.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A carrier film is characterized in that,

the carrier film comprises a first area and a second area, the second area is arranged around the first area, the outer edge of the second area is coincided with the outer edge of the carrier film,

the first area comprises a plurality of connected side edges, every two adjacent side edges are connected to form a corner, the second area is provided with at least one group of notches, and each group of notches is positioned on one side, away from the center of the first area, of one corner of the first area.

2. The carrier film of claim 1, wherein the notch extends to an outer edge of the carrier film in a direction away from a center of the first region.

3. The carrier film of claim 1, wherein a single group of the notches comprises at least two notches, and at least two of the notches are arranged at intervals along an extending direction of an edge of a corner of the first region.

4. The carrier film of claim 1 or 3, wherein the notch comprises a first end and a second end opposite to each other, the first end has a width smaller than that of the second end, and the second end is closer to a middle of the corner edge of the first region than the first end.

5. The carrier film of any one of claims 1 to 3, wherein the indentations comprise at least one of through holes, grooves and seams.

6. The carrier film of any one of claims 1 to 3, wherein a partial edge of a corner of the first region constitutes at least a partial edge of the notch.

7. The carrier film of any one of claims 1 to 6, wherein at least one side edge of the first region comprises a curved edge recessed towards the inside of the first region, the curved edge being disposed at a distance from a corner of the first region, the second region further being provided with at least one first opening, the first opening being disposed at a distance from the notch, the curved edge being disposed partially around the first opening.

8. The carrier film of claim 7, wherein the curved edge at least partially forms at least a portion of an edge of the first opening.

9. The carrier film of claim 7, wherein the first opening extends to an outer edge of the carrier film in a direction away from a center of the first region.

10. The carrier film of any one of claims 1 to 9, wherein the second region is provided with at least one first opening, and wherein the carrier film is further provided with at least one second opening in the first region, each second opening being provided adjacent to one side edge of the first region, the second openings being provided opposite to the corresponding first openings.

11. The carrier film of any one of claims 1 to 10, wherein the second region has at least one through hole corresponding to each side edge of the first region.

12. The carrier film according to any one of claims 1 to 11, wherein the number of the side edges of the first region is 4, two of the side edges are oppositely disposed, the other two side edges are oppositely disposed, and each corner is correspondingly provided with a set of the notches.

13. A laminating apparatus, comprising a holding mechanism, a carrying film according to any one of claims 1 to 12, and a pressing device,

the clamping mechanism is used for clamping the second area of the carrier film, the carrier film is used for fixing a flexible workpiece,

the bearing mechanism is positioned at one side of the bearing film and is used for fixing the curved surface workpiece,

the pressing device is positioned on one side, far away from the bearing mechanism, of the bearing film and is used for supporting the flexible workpiece to be attached to the curved surface workpiece.