CN109532193B - Attaching jig, attaching device and attaching method - Google Patents
Attaching jig, attaching device and attaching method Download PDFInfo
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- CN109532193B CN109532193B CN201811391037.6A CN201811391037A CN109532193B CN 109532193 B CN109532193 B CN 109532193B CN 201811391037 A CN201811391037 A CN 201811391037A CN 109532193 B CN109532193 B CN 109532193B
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- flexible panel
- cover plate
- strain
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- Fluid Mechanics (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a laminating jig, a laminating device and a laminating method, wherein the laminating jig is used for being matched with a compression mold provided with a curved cover plate so as to shape a flexible panel and laminate the curved cover plate with the flexible panel; the measuring assembly is arranged in the shell and used for measuring strain values or stress values of the first outer surface and the second outer surface; and the driving assembly is arranged in the shell and used for acting on the second outer surface so that the strain value or the stress value of the second outer surface is equal to the strain value or the stress value of the first outer surface. The invention can increase the bonding firmness between the curved flexible panel and the curved cover plate and can reduce the generation of bubbles.
Description
Technical Field
The invention relates to the technical field of touch display, in particular to a bonding jig, a bonding device and a bonding method.
Background
With the wide application of flexible films in display screens and touch panels, the appearance of 3C products (electronic products such as computers, communications, consumer products, etc.) is continuously developing from a plane to a curved surface. In a key process of forming a curved flexible panel (e.g., a curved display screen or a curved touch panel), a curved cover plate is used to press a planar flexible panel against a jig having an outer contour matching with the curved cover plate, so that the planar flexible panel is bent to form the curved flexible panel attached to the curved cover plate.
However, it can be known from the poisson phenomenon that the jig deforms and generates stress in the longitudinal direction (the pressing direction of the jig) and the transverse direction (the direction perpendicular to the pressing direction of the jig) after being pressed, and the stress values in the two directions are different (the ratio of the transverse stress to the longitudinal stress is μ, that is, the poisson ratio), and according to the principle of interaction of the forces, the transverse force and the longitudinal force acting on the curved surface flexible panel are also different, so that the stress distribution of the curved surface flexible panel is not uniform when the curved surface flexible panel is attached to the curved surface cover plate, and the attachment process is not firm or bubbles are generated.
Disclosure of Invention
Therefore, it is necessary to provide a bonding jig, a bonding apparatus, and a bonding method for solving the problem of uneven stress distribution when a curved flexible panel is bonded to a curved cover plate.
The utility model provides a laminating tool for with be provided with the compression moulding mould cooperation of curved surface apron, in order to moulding the flexible panel and make curved surface apron with the laminating of flexible panel, include:
the shell comprises an outer surface used for being in contact with the flexible panel, the outer surface comprises a first outer surface and a second outer surface, the second outer surface is smoothly connected with the first outer surface, the first outer surface is a plane, and the second outer surface is a curved surface;
the measuring assembly is arranged in the shell and used for measuring strain values or stress values of the first outer surface and the second outer surface; and
and the driving component is arranged in the shell and used for acting on the second outer surface so that the strain value or the stress value of the second outer surface is equal to the strain value or the stress value of the first outer surface.
In one embodiment, the measurement assembly includes a plurality of strain gauges spaced apart proximate the first and second outer surfaces; or the measurement assembly includes a plurality of strain gauges spaced apart proximate the first and second outer surfaces.
In one embodiment, the driving assembly includes a plurality of magnetic units, the plurality of magnetic units are close to the second outer surface and are arranged at intervals along the bending direction of the second outer surface, each of the magnetic units includes a first magnetic element and a second magnetic element arranged along the normal direction of the second outer surface, the first magnetic element is closer to the second outer surface than the second magnetic element, at least one of the first magnetic element and the second magnetic element is an electromagnet, and the first magnetic element and the second magnetic element can act on the second outer surface by means of mutual repulsive force thereof, so that the strain value or the stress value of the second outer surface is equal to the strain value or the stress value of the first outer surface.
In one embodiment, the first magnetic element and the second magnetic element are embedded in the housing; or the inside of the shell is provided with an accommodating cavity, the first magnetic element is embedded in the shell, and the second magnetic element is fixedly connected with the inner surface of the shell; or the shell is internally provided with an accommodating cavity, the first magnetic element is fixedly connected with the inner surface of the shell, and the second magnetic element is fixed in the accommodating cavity and is spaced from the inner surface of the shell.
In one embodiment, the housing further comprises a third outer surface smoothly connected to a side of the second outer surface remote from the first outer surface, the third outer surface being perpendicular to the first outer surface, the measuring assembly further being configured to measure a strain or stress value of the third outer surface, and the driving assembly further being configured to act on the third outer surface to equalize the strain or stress value of the third outer surface with the strain or stress value of the first outer surface.
In one embodiment, the driving assembly includes a plurality of magnetic units, the plurality of magnetic units are arranged close to the second outer surface and the third outer surface at intervals, each of the magnetic units includes a first magnetic element and a second magnetic element, the first magnetic element and the second magnetic element in the magnetic unit close to the second outer surface are arranged along a normal direction of the second outer surface, the first magnetic element and the second magnetic element in the magnetic unit close to the third outer surface are arranged along a direction perpendicular to the third outer surface, the first magnetic element is closer to the second outer surface than the second magnetic element, at least one of the first magnetic element and the second magnetic element is an electromagnet, and the first magnetic element and the second magnetic element can act on the second outer surface or the third outer surface by means of mutual repulsive force therebetween, such that the strain or stress values of the second and third outer surfaces are equal to the strain or stress value of the first outer surface.
In one embodiment, the material of the housing has a poisson's ratio of 0.2-0.5.
Meanwhile, the invention also provides a fitting device, which comprises:
the attaching jig; and
the compression mold is arranged above the first outer surface of the attaching jig, one end, close to the attaching jig, of the compression mold is used for fixing the curved cover plate, and the curved cover plate comprises a flat part and a bent part connected with the flat part;
when the compression mold faces the laminating jig, the curved surface cover plate can push and press the compression mold and the planar flexible panel between the laminating jigs to bend the first outer surface of the laminating jig, and the curved planar flexible panel is abutted to the second outer surface to form the curved surface flexible panel laminated with the flat part and the curved part of the curved surface cover plate.
In one embodiment, the end face, close to the attaching jig, of the compression mold is provided with a containing groove, the containing groove comprises a groove bottom and a groove wall connected with the groove bottom, the groove bottom of the containing groove is used for abutting against the flat part of the curved cover plate, and the groove wall of the containing groove is used for abutting against the curved part of the curved cover plate.
In one embodiment, the attaching device further comprises an elastic support table for supporting the planar flexible panel.
Meanwhile, the invention also provides a fitting method, which comprises the following steps:
providing the attaching device;
providing a curved surface cover plate, fixing the curved surface cover plate at one end of the compression mold close to the attaching jig, wherein the curved surface cover plate comprises a flat part and a bent part connected with the flat part;
providing a planar flexible panel, and enabling the planar flexible panel to be located between the compression mold and the attaching jig;
driving the compression mold to move towards the first outer surface of the attaching jig so that the curved cover plate pushes the planar flexible panel to bend on the first outer surface of the attaching jig, and the bent planar flexible panel is abutted to the second outer surface;
the measuring assembly detects strain or stress values of the first outer surface and the second outer surface; and
the driving assembly acts on the second outer surface according to the strain value or the stress value of the first outer surface and the second outer surface, so that the strain value or the stress value of the second outer surface is equal to the strain value or the stress value of the first outer surface.
The laminating jig, the laminating device and the laminating method provided by the invention have the following advantages:
when the laminating jig is used in the manufacturing process of forming and laminating the curved surface flexible panel, the curved surface cover plate pushes and presses the planar flexible panel to the first outer surface of the shell, so that the planar flexible panel is bent on the first outer surface and is abutted against the second outer surface, and the curved surface flexible panel mutually laminated with the curved surface cover plate is formed. The measuring assembly can measure strain values or stress values of the first outer surface and the second outer surface of the compressed shell, strain difference values or stress difference values between the first outer surface and the second outer surface can be calculated, and the driving assembly can act on the second outer surface according to the strain difference values or stress difference values of the first outer surface and the second outer surface to make up the strain difference values or stress difference values, so that the strain values or stress values of the second outer surface are equal to the strain values or stress values of the first outer surface. According to the interaction principle of the force, the force acting on each part of the curved surface flexible panel is uniformly distributed, so that the laminating firmness between the curved surface flexible panel and the curved surface cover plate can be increased, and the generation of bubbles can be reduced.
Drawings
FIG. 1 is a schematic structural diagram of a bonding apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the compression mold shown in FIG. 1 pushing the flexible panel to the bonding fixture;
FIG. 3 is an enlarged schematic view at A in FIG. 1;
fig. 4 is a schematic view illustrating a bonding process between a cover plate and a flexible panel according to an embodiment of the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 and 2, a bonding apparatus 10 according to an embodiment of the present invention is used for compression-molding a planar flexible panel 30 into a curved flexible panel 30a through a curved cover plate 20, and bonding the curved cover plate 20 and the curved flexible panel 30a to each other. The flexible panel may be a display panel (the display panel may be a liquid crystal display panel or an OLED display panel) or a touch panel or a touch display panel, and the cover plate may be a glass panel.
The attaching device 10 includes an attaching jig 100 and a compression mold 200. The compression mold 200 is arranged above the attaching jig 100, one end of the compression mold 200 close to the attaching jig 100 is used for fixing the curved cover plate 20, and the planar flexible panel 30 is arranged between the compression mold 200 and the attaching jig 100. When the compression mold 200 moves toward the attaching jig 100, the compression mold 200 pushes the planar flexible panel 30 to bend on the attaching jig 100 by the curved cover plate 20, forming a curved flexible panel 30a attached to the curved cover plate 20.
The attaching jig 100 includes a housing 110, a measuring assembly 120, and a driving assembly 130.
The housing 110 includes an outer surface for contacting the flexible panel, and the outer surface of the housing 110 is used for forming the curved flexible panel 30a and attaching the curved flexible panel 30a and the curved cover plate 20 to each other. The outer surface of the housing 110 includes a first outer surface 111 and a second outer surface 112, the first outer surface 111 is a plane, the second outer surface 112 is a curved surface, and the second outer surface 112 is smoothly connected to the first outer surface 111. Wherein the Poisson's ratio of the material used for the housing 110 is 0.2-0.5. Specifically, in the present embodiment, the material of the housing is a material having elastic properties, such as rubber. For example, the material of the housing 110 may be silicone or rubber. The housing 110 made of the elastic material has a large poisson's ratio (the ratio of the transverse stress to the longitudinal stress of the housing 110 after being compressed is μ, i.e. the ratio of the stress in the first direction X to the stress in the second direction Y is shown). According to the poisson phenomenon, on the premise that the first outer surface 111 is under the same pressure, the second outer surface 112 has a larger stress value, and according to the principle of force interaction, the curved flexible panel 30a and the curved cover plate 20 have larger attaching stress when the second outer surface 112 is attached, so that the attaching firmness of the curved flexible panel 30a and the curved cover plate 20 can be ensured.
As shown in fig. 3, the measurement assembly 120 is disposed within the housing 110 and is used to measure strain values of the first and second outer surfaces 111 and 112. It can be known from hooke's law that the magnitude of the stress applied to the first outer surface 111 and the second outer surface 112 can be obtained by converting the measured strain value under the condition that the elastic coefficient of the material used for the housing 110 is known. Specifically, in the present embodiment, the measurement component 120 is embedded in the housing 110, the measurement component 120 includes a plurality of strain gauges 121, and the plurality of strain gauges 121 are spaced apart near the first outer surface 111 and the second outer surface 112. The strain gauges may be metal, semiconductor, or metal and metal oxide paste type strain gauges. It is understood that in other embodiments, the strain gauges 121 may be directly replaced by a strain gauge, so that the magnitude of the stress on the first outer surface 111 and the second outer surface 112 may be directly measured.
The driving assembly 130 is disposed in the housing 110. The driving assembly 130 is configured to act on the second outer surface 112 to increase the stress level of the second outer surface 112, so that the stress level of the second outer surface 112 is equal to the stress level of the first outer surface 111. Specifically, in the present embodiment, the driving assembly 130 includes a plurality of magnetic units 130a, and the plurality of magnetic units 130a are close to the second outer surface 112 and are arranged at intervals along the bending direction of the second outer surface 112. Each magnetic unit 130a includes a first magnetic element 131 and a second magnetic element 132 arranged along a normal direction of the second outer surface 112 (the normal direction of the second outer surface 112 is a direction perpendicular to a tangent of the second outer surface 112). The first magnetic element 131 is closer to the second outer surface 112 than the second magnetic element 132, and the strain gage 121 is closer to the second outer surface 112 than the first magnetic element 131. One of the first magnetic element 131 and the second magnetic element 132 is an electromagnet, and the other is a permanent magnet or an electromagnet. For example, the first magnetic element 131 is a permanent magnet, and the second magnetic element 132 is an electromagnet; or the first magnetic element 131 is an electromagnet and the second magnetic element 132 is a permanent magnet; or the first magnetic element 131 and the second magnetic element 132 are both electromagnets. The conversion is made according to the actual use requirement, and is not limited herein. The electromagnet can be a direct current electromagnet, and the permanent magnet can be permanent magnet alloy of an aluminum-nickel-cobalt system and an iron-chromium-cobalt system, a permanent magnetic ferrite, a rare earth permanent magnetic material or a composite permanent magnetic material and the like.
One of the first magnetic element 131 and the second magnetic element 132 is an electromagnet, and the other is a permanent magnet or an electromagnet, so that the first magnetic element 131 and the second magnetic element 132 can act on the second outer surface 112 by means of the repulsive force generated by the magnetic field therebetween, so that the stress value of the second outer surface 112 is equal to the stress value of the first outer surface 111.
In the above attaching jig 100, referring to fig. 1 and 3, the housing 110 is a hollow structure, the housing 110 has an accommodating cavity 110a therein, the first magnetic element 131 is embedded in the housing 110, and the second magnetic element 132 is disposed in the accommodating cavity 110a and fixedly connected to the inner surface 110b of the housing 110. It is understood that in other embodiments, the first magnetic element 131 is disposed in the receiving cavity 110a and fixedly connected to the inner surface 110b of the housing 110, and the second magnetic element 132 is fixed in the receiving cavity 110a and spaced apart from the inner surface 110b of the housing 110. In other embodiments, the housing 110 may be a solid structure, and the first magnetic element 131 and the second magnetic element 132 are embedded in the housing 110. Wherein, the magnitude of the mutual repulsive force generated by the magnetic field between the first magnetic element 131 and the second magnetic element 132 can be determined by adjusting the magnitude and direction of the current flowing into the electromagnet.
In other embodiments, the driving component 130 may be a slider-link mechanism instead of the magnetic unit 130a, and the slider is driven by a built-in motor-controlled link to act on the second outer surface 112, so as to deform the second outer surface 112, and thus the stress value of the second outer surface 112 is equal to the stress value of the first outer surface 111.
When the attaching jig 100 is used in a process of forming and attaching the curved flexible panel 30a, the curved cover plate 20 is pressed against the planar flexible panel 30 onto the first outer surface 111 of the housing 110 by the compression mold 200, so that the planar flexible panel 30 is bent at the first outer surface 111 and abuts against the second outer surface 112, thereby forming the curved flexible panel 30a attached to the curved cover plate 20. The measuring assembly 120 can measure the strain values of the first outer surface 111 and the second outer surface 112 of the casing 110 after being pressed, so that the strain difference between the first outer surface 111 and the second outer surface 112 can be calculated. The driving assembly 130 can act on the second outer surface 112 according to the strain difference between the first outer surface 111 and the second outer surface 112 to compensate the strain difference, so that the stress value of the second outer surface 112 is equal to the stress value of the first outer surface 111. According to the principle of force interaction, the force acting on all parts of the curved flexible panel 30a is uniformly distributed, so that the joint firmness between the curved flexible panel 30a and the curved cover plate 20 can be increased, and the generation of bubbles can be reduced.
Further, in this embodiment, the housing 110 further includes a third outer surface 113 smoothly connected to a side of the second outer surface 112 away from the first outer surface 111, and the third outer surface 113 is perpendicular to the first outer surface 111. The measurement assembly 120 is also used to measure strain or stress values of the third outer surface 113, and the plurality of strain gauges 121 are also spaced apart near the third outer surface 113. The driving assembly 130 is further configured to act on the third outer surface 113 to make the strain value of the third outer surface 113 equal to the strain value of the first outer surface 111, and at this time, the first magnetic element 131 and the second magnetic element 132 in the magnetic unit 130a close to the third outer surface 113 are arranged in a direction perpendicular to the third outer surface 113. In this way, when the curved cover plate 20 has a straight edge portion extending to the curved portion 22, the flat flexible panel 30 is compressed and bent to abut against the third outer surface 113, thereby facilitating the attachment of the curved flexible panel 30a after molding to the straight edge portion extending to the curved portion 22.
Referring to fig. 1 and 2, a compression mold 200 is disposed above the first outer surface 111 of the attaching jig 100, and one end of the compression mold 200 near the attaching jig 100 is used for fixing the curved cover plate 20 (the curved cover plate 20 includes a flat portion 21 and a curved portion 22 connected to the flat portion 21). Specifically, in the present embodiment, the end surface of the compression mold 200 close to the attaching jig 100 is provided with a receiving groove 210, the receiving groove 210 includes a groove bottom 211 and a groove wall 212 connected to the groove bottom 211, the groove bottom 211 of the receiving groove 210 is configured to abut against the flat portion 21 of the curved cover plate 20, and the groove wall 212 of the receiving groove 200 is configured to abut against the curved portion 22 of the curved cover plate 20. In this way, when the curved cover plate 20 is attached to the curved flexible panel 30a, the groove bottom 211 and the groove wall 212 of the receiving groove 210 can provide an opposite supporting force to the curved cover plate 20, so that the curved cover plate 20 and the curved flexible panel 30a are better attached to each other.
Further, in this embodiment, the attaching device 10 further includes an elastic supporting stage 300, and the elastic supporting stage 300 is used for supporting the planar flexible panel 30. Specifically, in the present embodiment, the number of the elastic support tables 300 is plural, and the plural elastic support tables 300 are disposed around the attaching jig 100. In one embodiment, the elastic support platform 300 includes a platform 310 and an elastic member 320 disposed at a lower end of the platform 310, the platform 310 is used for supporting the planar flexible panel 30, and the elastic member 320 may be an elastic body such as a spring, a sponge, or an air bag. After the flexible panel 30 of plane on the elastic supporting platform 300 is pressed, the elastic supporting platform 300 compresses downwards and makes the flexible panel 30 of plane contact with the first outer surface 111 of the attaching jig 100, and the elastic supporting platform 300 provides the buffer force of the downward moving process for the flexible panel 30 of plane, avoiding the strength damage.
Now, the method for attaching the flexible panel and the cover plate according to the present invention will be briefly described with reference to fig. 1 to 4:
the attaching method of the present invention comprises the steps of:
in step S410, the bonding jig 100 is provided.
Step S420, providing the compression mold 200. The compression mold 200 is disposed over the first outer surface 111 of the bonding jig 100.
In step S430, a curved cover plate 20 is provided. The curved cover plate 20 is fixed to one end of the compression mold 200 close to the attaching jig 100, and the curved cover plate 20 includes a flat portion 21 and a curved portion 22 connected to the flat portion 21. It will be appreciated that in other embodiments, the curved cover plate 20 also includes a straight edge portion extending along the curved portion 22.
Step S440, providing the planar flexible panel 30, and placing the planar flexible panel 30 between the compression mold 200 and the attaching jig 100. Specifically, in the present embodiment, the planar flexible panel 30 is provided on the elastic support stage 300. It is understood that in other embodiments, the planar flexible panel 30 may be directly disposed on the first outer surface 111 of the attaching jig 100.
Step S450, the compression mold 200 is driven to move toward the first outer surface 111 of the bonding jig 100, so that the curved cover plate 20 presses the planar flexible panel 30 to bend on the first outer surface 111 of the bonding jig 100, and the bent planar flexible panel 30 abuts against the second outer surface 112. When the attaching jig 100 further includes a third outer surface 113 connected to the second outer surface 112, the bent planar flexible panel 30 is further abutted against the third outer surface 113.
In step S460, the measuring assembly 120 detects strain values of the first outer surface 111 and the second outer surface 112. Specifically, in the present embodiment, the measurement assembly 120 includes a plurality of strain gauges 121 spaced apart near the first and second outer surfaces 111, 112. It will be appreciated that in other embodiments, the strain gage 121 may be replaced directly by a strain gage.
In step S470, the driving assembly 130 acts on the second outer surface 112 according to the strain or stress values of the first outer surface 111 and the second outer surface 112, so that the strain or stress value of the second outer surface 112 is equal to the strain or stress value of the first outer surface 111. Specifically, in the present embodiment, the driving assembly 130 includes a plurality of magnetic units 130a, and the plurality of magnetic units 130a are close to the second outer surface 112 and are arranged at intervals along the bending direction of the second outer surface 112. Each magnetic unit 130a includes a first magnetic element 131 and a second magnetic element 132 arranged along a normal direction of the second outer surface 112. The first magnetic element 131 is closer to the second outer surface 112 than the second magnetic element 132, and the strain gage 121 is closer to the second outer surface 112 than the first magnetic element 131. At least one of the first magnetic element 131 and the second magnetic element 132 is an electromagnet.
In this embodiment, step S470 specifically includes:
a processor is provided. The processor receives the strain values of the first outer surface 111 and the second outer surface 112 measured by the strain gauge 121, calculates the strain difference value between each position of the second outer surface 112 and the first outer surface 111, converts the strain difference value into a driving signal, transmits the driving signal to the electromagnet in the magnetic unit 130a corresponding to the strain gauge 121 near the second outer surface 112, and generates a magnetic field force acting on the second outer surface 112 by changing the current value and the current direction flowing through the electromagnet so as to realize the stress value equality between each position of the first outer surface 111 and each position of the second outer surface 112. Thereby equalizing the application force across the curved flexible panel 30 a.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (13)
1. The utility model provides a laminating tool for with be provided with the compression moulding mould cooperation of curved surface apron, in order to moulding the flexible panel and make curved surface apron with the laminating of flexible panel, its characterized in that includes:
the shell comprises an outer surface used for being in contact with the flexible panel, the outer surface comprises a first outer surface and a second outer surface, the second outer surface is smoothly connected with the first outer surface, the first outer surface is a plane, and the second outer surface is a curved surface;
the measuring assembly is arranged in the shell and used for measuring strain values or stress values of the first outer surface and the second outer surface; and
the driving assembly is arranged in the shell and used for acting on the second outer surface so that the strain value or the stress value of the second outer surface is equal to the strain value or the stress value of the first outer surface; the driving assembly comprises a plurality of magnetic units, each magnetic unit comprises a first magnetic element and a second magnetic element, at least part of the plurality of magnetic units are close to the second outer surface and are arranged at intervals along the bending direction of the second outer surface, the first magnetic elements and the second magnetic elements in the magnetic units close to the second outer surface are arranged along the normal direction of the second outer surface, the first magnetic elements are close to the second outer surface compared with the second magnetic elements, and the first magnetic elements and the second magnetic elements can act on the second outer surface by means of mutual repulsive force of the first magnetic elements and the second magnetic elements so that the strain value or the stress value of the second outer surface is equal to the strain value or the stress value of the first outer surface.
2. The laminating jig of claim 1, wherein the measuring assembly includes a plurality of strain gauges spaced apart proximate the first and second outer surfaces; or the measurement assembly includes a plurality of strain gauges spaced apart proximate the first and second outer surfaces.
3. The bonding jig according to claim 1, wherein at least one of the first magnetic element and the second magnetic element is an electromagnet.
4. The bonding jig according to claim 3, wherein the first magnetic element and the second magnetic element are embedded in the housing.
5. The attaching jig according to claim 3, wherein the housing has an accommodating cavity therein, the first magnetic element is embedded in the housing, and the second magnetic element is fixedly connected to an inner surface of the housing.
6. The attaching jig according to claim 3, wherein the housing has an accommodating cavity therein, the first magnetic element is fixedly connected to the inner surface of the housing, and the second magnetic element is fixed in the accommodating cavity and spaced from the inner surface of the housing.
7. The attaching jig of claim 1, wherein the housing further includes a third outer surface smoothly connected to a side of the second outer surface away from the first outer surface, the third outer surface is perpendicular to the first outer surface, the measuring assembly is further configured to measure a strain value or a stress value of the third outer surface, and the driving assembly is further configured to act on the third outer surface so that the strain value or the stress value of the third outer surface is equal to the strain value or the stress value of the first outer surface.
8. The attaching jig according to claim 7, wherein the plurality of magnetic units are arranged at intervals near the third outer surface, and the first magnetic element and the second magnetic element in the magnetic unit near the third outer surface are arranged in a direction perpendicular to the third outer surface and are close to the third outer surface, and the first magnetic element and the second magnetic element can act on the third outer surface by means of mutual repulsive force therebetween, so that the strain value or the stress value of the third outer surface is equal to the strain value or the stress value of the first outer surface.
9. The attaching jig according to any one of claims 1 to 8, wherein the material of the housing has a Poisson's ratio of 0.2 to 0.5.
10. A laminating device, comprising:
the attaching jig according to any one of claims 1 to 9; and
the compression mold is arranged above the first outer surface of the attaching jig, one end, close to the attaching jig, of the compression mold is used for fixing the curved cover plate, and the curved cover plate comprises a flat part and a bent part connected with the flat part;
when the compression mold faces the laminating jig, the curved surface cover plate can push and press the compression mold and the planar flexible panel between the laminating jigs to bend the first outer surface of the laminating jig, and the curved planar flexible panel is abutted to the second outer surface to form the curved surface flexible panel laminated with the flat part and the curved part of the curved surface cover plate.
11. The attaching device according to claim 10, wherein a receiving groove is formed on an end surface of the compression mold near the attaching jig, the receiving groove includes a groove bottom and a groove wall connected to the groove bottom, the groove bottom of the receiving groove is configured to abut against the flat portion of the curved cover plate, and the groove wall of the receiving groove is configured to abut against the curved portion of the curved cover plate.
12. The laminating device of claim 10 further comprising an elastic support table for carrying the planar flexible panel.
13. A bonding method is characterized by comprising the following steps:
providing a laminating device according to any one of claims 10 to 12;
providing a curved surface cover plate, fixing the curved surface cover plate at one end of the compression mold close to the attaching jig, wherein the curved surface cover plate comprises a flat part and a bent part connected with the flat part;
providing a planar flexible panel, and enabling the planar flexible panel to be located between the compression mold and the attaching jig;
driving the compression mold to move towards the first outer surface of the attaching jig so that the curved cover plate pushes the planar flexible panel to bend on the first outer surface of the attaching jig, and the bent planar flexible panel is abutted to the second outer surface;
the measuring assembly detects strain or stress values of the first outer surface and the second outer surface; and
the driving assembly acts on the second outer surface according to the strain value or the stress value of the first outer surface and the second outer surface, so that the strain value or the stress value of the second outer surface is equal to the strain value or the stress value of the first outer surface.
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| CN109950184B (en) * | 2019-04-12 | 2021-03-02 | 京东方科技集团股份有限公司 | Laminating device, flexible display panel, assembling method of flexible display panel and flexible display device |
| CN110065220B (en) * | 2019-04-29 | 2022-01-11 | 京东方科技集团股份有限公司 | Bending forming jig, curved surface forming equipment and bending forming method |
| CN110212120B (en) * | 2019-05-31 | 2021-10-26 | 京东方科技集团股份有限公司 | Laminating equipment and laminating method |
| CN110264879B (en) * | 2019-06-19 | 2022-01-25 | 广州国显科技有限公司 | Curved surface display screen laminating device |
| CN110307231B (en) * | 2019-06-28 | 2021-02-12 | 广州国显科技有限公司 | Laminating equipment |
| CN110211503A (en) * | 2019-06-28 | 2019-09-06 | 云谷（固安）科技有限公司 | Abutted equipment and applying method |
| CN110185681B (en) * | 2019-06-28 | 2021-06-29 | 云谷（固安）科技有限公司 | Bonding apparatus and bonding method |
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| CN110588132B (en) * | 2019-10-23 | 2021-08-27 | 云谷（固安）科技有限公司 | Bonding apparatus and bonding method |
| CN111439016B (en) | 2020-03-26 | 2021-09-03 | 武汉华星光电半导体显示技术有限公司 | Attaching method of special-shaped glass cover plate and display device |
| CN111540269B (en) * | 2020-04-27 | 2022-04-19 | 深圳市联得自动化装备股份有限公司 | Laminating jig, laminating equipment and laminating method |
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| CN111899642A (en) * | 2020-07-15 | 2020-11-06 | 昆山国显光电有限公司 | Bonding apparatus and bonding method |
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| CN115107344A (en) * | 2021-03-23 | 2022-09-27 | 广州国显科技有限公司 | Bonding apparatus and bonding method |
| CN113035084B (en) * | 2021-04-09 | 2022-12-30 | 成都京东方光电科技有限公司 | Profiling laminating device, profiling laminating method, display module and display device |
| CN113241359B (en) * | 2021-05-10 | 2024-07-23 | 京东方科技集团股份有限公司 | Curved surface display panel, preparation method thereof and display device |
| CN114061529B (en) * | 2021-11-01 | 2023-08-08 | 业成科技（成都）有限公司 | Aspherical surface measuring jig and aspherical surface measuring device |
| CN114506065A (en) * | 2022-03-01 | 2022-05-17 | 业成科技（成都）有限公司 | Film sticking device, film sticking method and manufacturing method of film sticking device |
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