CN112265281A - Laminating equipment and laminating method for curved surface display panel and composite film layer - Google Patents
Laminating equipment and laminating method for curved surface display panel and composite film layer Download PDFInfo
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- CN112265281A CN112265281A CN202011058743.6A CN202011058743A CN112265281A CN 112265281 A CN112265281 A CN 112265281A CN 202011058743 A CN202011058743 A CN 202011058743A CN 112265281 A CN112265281 A CN 112265281A
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- 239000002131 composite material Substances 0.000 title claims abstract description 103
- 238000010030 laminating Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000003825 pressing Methods 0.000 claims abstract description 30
- 239000000853 adhesive Substances 0.000 claims description 20
- 230000001070 adhesive effect Effects 0.000 claims description 20
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- 230000003287 optical effect Effects 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 3
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- 238000001746 injection moulding Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
- B29C65/4845—Radiation curing adhesives, e.g. UV light curing adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
- B29C65/7805—Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7855—Provisory fixing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/84—Specific machine types or machines suitable for specific applications
- B29C66/863—Robotised, e.g. mounted on a robot arm
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3475—Displays, monitors, TV-sets, computer screens
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a laminating device and a laminating method of a curved-surface display panel and a composite film layer, wherein the laminating device is provided with a circuit board adjusting device and a pressing device, a flexible circuit board can be bent and fixed towards the direction of a display side through the circuit board adjusting device, so that when the composite film layer and the curved-surface display panel are pressed and fixed through the pressing device, the relative position of the flexible circuit board relative to the curved-surface display panel can be adjusted through the adjusting device, the problem that the flexible circuit board is damaged by pressing in the pressing process is avoided, the laminating yield of a flexible display screen and the composite film layer is improved, and the product quality is improved.
Description
Technical Field
The invention relates to the technical field of curved surface display panels, in particular to a laminating device and a laminating method of a curved surface display panel and a composite film layer.
Background
With the continuous development of science and technology, more and more electronic devices with display functions are widely applied to daily life and work of people, bring great convenience to the daily life and work of people, and become an indispensable important tool for people at present.
The main component of the electronic device implementing the display function is a display screen. Compared with a conventional flat panel display screen, the curved display panel has a larger display area and diversified appearances, and becomes a main research and development direction in the field of display screens. At present, with the continuous development of the manufacturing process technology, the yield and the cost of the curved display panel are continuously reduced, and the large-scale commercial application on the electronic equipment can be realized.
The curved surface display panel comprises a 3D cover plate and a flexible display screen which are attached relatively, and the 3D cover plate is fixed on the display side of the flexible display screen. It is also desirable to attach a composite film layer to the side of the flexible display screen away from the display side of the flexible display screen. The composite film layer is used for heat dissipation, static electricity prevention and the like of the flexible display screen. In the prior art, the flexible display screen and the composite film layer have poor fitting yield.
Disclosure of Invention
In view of this, the invention provides a laminating apparatus and a laminating method for a curved display panel and a composite film layer, which can improve the laminating yield of a flexible display screen and the composite film layer and improve the product quality, and the scheme is as follows:
a curved surface display panel and laminating equipment of a composite film layer are provided, the curved surface display panel is provided with a flexible display screen and a 3D cover plate which is laminated on the display side of the flexible display screen, and a flexible circuit board is bound on the edge of the flexible display screen;
the attaching device includes:
the circuit board adjusting device is used for fixing the flexible circuit board so that the flexible circuit board is bent towards the direction of the display side;
and the laminating device is used for fixedly laminating the composite film layer with the curved surface display panel, and the composite film layer is laminated on one side of the flexible display screen, which deviates from the display side.
The laminating equipment provided by the technical scheme of the invention is provided with the circuit board adjusting device and the pressing device, and the flexible circuit board can be bent and fixed towards the direction of the display side through the circuit board adjusting device, so that when the composite film layer and the curved surface display panel are pressed and fixed through the pressing device, the relative position of the flexible circuit board relative to the curved surface display panel can be adjusted through the adjusting device, the problem that the flexible circuit board is damaged by pressure in the pressing process is avoided, the laminating yield of the flexible display screen and the composite film layer is improved, and the product quality is improved.
The invention also provides a method for attaching the curved-surface display panel to the composite film layer, which is characterized in that the curved-surface display panel is provided with a flexible display screen and a 3D cover plate attached to the display side of the flexible display screen, and the edge of the flexible display screen is bound with a flexible circuit board;
the attaching method comprises the following steps:
and after the flexible circuit board is bent towards the display side, the composite film layer is fixedly attached to the curved surface display panel, and the flexible display screen deviates from the surface of the display side.
According to the laminating method provided by the technical scheme, the flexible circuit board is bent towards the display side, the composite film layer is fixedly laminated with the curved surface display panel, and the composite film layer is laminated on the surface of the flexible display screen, which is far away from the display side. Therefore, when the composite film layer and the curved-surface display panel are fixedly pressed through the pressing device, the relative position of the flexible circuit board relative to the curved-surface display panel can be adjusted through the adjusting device, the problem that the flexible circuit board is damaged by pressure in the pressing process is solved, the laminating yield of the flexible display screen and the composite film layer is improved, and the product quality is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or technical solutions in related arts, the drawings used in the description of the embodiments or prior arts will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
The structure, proportion, size and the like shown in the drawings are only used for matching with the content disclosed in the specification, so that the person skilled in the art can understand and read the description, and the description is not used for limiting the limit condition of the implementation of the invention, so the method has no technical essence, and any structural modification, proportion relation change or size adjustment still falls within the scope of the technical content disclosed by the invention without affecting the effect and the achievable purpose of the invention.
FIG. 1 is a flow chart of a related process for attaching and fixing a flexible display screen to a composite film;
FIG. 2 is a schematic view illustrating a curved display panel and a composite film layer bonded and fixed together;
FIG. 3 is a top view of a curved display panel with a four-curved structure facing the display side;
FIG. 4 is a sectional view taken along line A-A' of FIG. 3;
FIG. 5 is a sectional view taken along line B-B' of FIG. 3;
FIG. 6 is a top view of a curved display panel of a hyperboloid structure facing the display side;
FIG. 7 is a sectional view taken along line A-A' of FIG. 6;
FIG. 8 is a sectional view taken along line B-B' of FIG. 6;
fig. 9 is a schematic structural diagram of a curved display panel and a bonding apparatus of a composite film layer according to an embodiment of the present invention;
fig. 10 is a schematic structural view of another laminating apparatus for a curved display panel and a composite film layer according to an embodiment of the present invention;
fig. 11 is a schematic structural view of another laminating apparatus for a curved display panel and a composite film layer according to an embodiment of the present invention;
fig. 12 is a schematic structural view of another laminating apparatus for a curved display panel and a composite film layer according to an embodiment of the present invention;
fig. 13 is a top view of a surface of an adjusting bracket facing a flexible printed circuit board according to an embodiment of the present invention;
FIG. 14 is a sectional view in the direction of C-C' of FIG. 13;
FIG. 15 is a top view of another side surface of an alignment bracket facing a flexible circuit board according to an embodiment of the present invention;
FIG. 16 is a sectional view in the direction of C-C' of FIG. 15;
FIG. 17 is a sectional view in the direction D-D' of FIG. 15;
FIG. 18 is a schematic view of the adjustment bracket shown in FIG. 15 with a stop mounted thereon;
FIG. 19 is a sectional view in the direction C-C' of FIG. 18;
FIG. 20 is a schematic view of the adjusting bracket of FIG. 15 for fixing the flexible circuit board;
fig. 21 is a schematic structural diagram of an adjusting bracket according to an embodiment of the present invention;
fig. 22 is a schematic flow chart illustrating a bonding method according to an embodiment of the present invention;
fig. 23 is a schematic diagram of a principle of adjusting the position of a flexible circuit board according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, fig. 1 is a flow chart of a related process method for attaching and fixing a flexible display screen and a composite film layer, and includes steps of firstly, attaching and fixing the flexible display screen and a guide film, arranging optical cement on a display side surface of the flexible display screen, providing a 3D cover plate, and attaching, pressing and fixing the 3D cover plate on a display side of the flexible display screen through the optical cement; then, the adhesive layer between the flexible display screen and the guide film can be debonded through UV light (ultraviolet light) irradiation, so that the first guide film on the surface of the flexible display screen is removed; further, providing a composite film layer attached with another guide film, attaching the composite film layer to one side of the flexible display screen, which is far away from the display side, and enabling the adhesive layer between the composite film layer and the second guide film to be debonded through UV light irradiation, so that the guide film on the surface of the composite film layer is removed; then removing bubbles between the flexible display screen and the composite film layer by heating; and finally, further curing the adhesive layer between the flexible display screen and the composite film layer and the adhesive layer between the flexible display screen and the 3D cover plate through UV light irradiation.
As shown in fig. 2, fig. 2 is a schematic diagram illustrating a principle of bonding and fixing a curved display panel and a composite film layer, in the manner shown in fig. 1, a flexible display screen 122 and a 3D cover plate 121 are bonded and fixed to form a curved display panel 12, after a guide film on the surface of the flexible display screen 122 is removed, another guide film 14 is flattened by a fixture 15 and is placed between a lining mold 11 and the curved display panel 12. The composite film layer 13 is fixed on the surface of the flattened guide film 14. The flexible display screen 122 is disposed toward the lining mold 11. The composite film layer 13 is disposed toward the flexible display screen 122.
A Flexible Printed Circuit (FPC) is bound to the edge of the flexible display screen 122. For example, the edge of the flexible display 122 may be provided with a bonding region having a pad connected to a signal line in the flexible display 122. And the bonding pads on the Flexible Printed Circuit (FPC) are welded and fixed with the bonding pads of the flexible display screen 122. To the curved surface display panel 12 that is formed by flexible display screen 122 and 3D apron 121 laminating are fixed, flexible line way board FPC sets up and deviates from the crooked one side reason in curved surface display panel 12 and shows the side, can avoid binding the visual region in district like this, realizes the comprehensive screen structure of curved surface.
When the curved-surface display panel 12 and the lining mold 11 are relatively moved, so that the composite film layer 13 is attached and fixed on the surface of one side of the flexible display screen 122 departing from the 3D cover plate 121, because the flexible printed circuit board FPC extends towards the direction departing from the middle plane display area of the flexible display screen based on the edge bending structure, one end of the flexible printed circuit board FPC, which is far away from the curved-surface display panel 12, first contacts the composite film layer 13 in the pressing process, and thus the flexible printed circuit board FPC is damaged by pressure.
In order to solve the above problems, embodiments of the present invention provide a laminating apparatus and a laminating method for a curved display panel and a composite film layer, where the laminating apparatus has a circuit board adjusting device and a pressing device, and a flexible circuit board can be bent and fixed toward a display side by the circuit board adjusting device, so that when the composite film layer and the curved display panel are pressed and fixed by the pressing device, a relative position of the flexible circuit board with respect to the curved display panel can be adjusted by the adjusting device, thereby avoiding a problem that the flexible circuit board is damaged by pressure during pressing, improving a laminating yield of the flexible display screen and the composite film layer, and improving product quality.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The laminating equipment provided by the embodiment of the invention is used for laminating and fixing the curved-surface display panel and the composite film layer. The curved display panel may be a curved display panel 12a of a four-curved structure as shown in fig. 3 to 5, or a curved display panel 12b of a hyperboloid structure as shown in fig. 6 to 8.
As shown in fig. 3-5, fig. 3 is a top view of a curved display panel with a four-curved structure facing a display side, fig. 4 is a sectional view of fig. 3 along a direction a-a ', and fig. 5 is a sectional view of fig. 3 along a direction B-B'. The curved display panel 12a includes a flexible display screen 122a and a 3D cover 121a that are attached to each other. The curved display panel 12a is a four-curved panel structure with curved edges. The curved display panel 12a may be formed by attaching and fixing a flexible display screen 122a to a curved and concave side of a 3D cover 121a whose peripheral edge is curved.
As shown in fig. 6 to 8, fig. 6 is a plan view of a curved display panel of a hyperboloid structure facing a display side, fig. 7 is a sectional view of fig. 6 in a direction a-a ', and fig. 8 is a sectional view of fig. 6 in a direction B-B'. The curved display panel 12b includes a flexible display screen 122b and a 3D cover 121b that are attached to each other. The curved display panel 12b is a double-curved-surface structure in which opposite edges are curved. The curved display panel 12b may be formed by attaching and fixing a flexible display screen 122b to a curved and concave side of a 3D cover plate 121b having curved opposite edges.
As shown in fig. 9, fig. 9 is a schematic structural diagram of a device for attaching a curved-surface display panel and a composite film layer according to an embodiment of the present invention, the device is used for attaching and fixing the curved-surface display panel 12 and the composite film layer 13, the curved-surface display panel 12 includes a flexible display screen 122 and a 3D cover plate 121 attached to a display side of the flexible display screen 122, and a flexible printed circuit board FPC is bound to an edge of the flexible display screen 122. The 3D cover plate 121 is a transparent cover plate having a predetermined three-dimensional structure, and may be a 3D glass plate or a 3D plastic plate. The structure of the curved display panel 12 includes, but is not limited to, the curved display panel 12a of the four-curved structure and the curved display panel 12b of the double-curved structure described above.
The attaching device includes: a circuit board adjusting device 21, wherein the circuit board adjusting device 21 is used for fixing the flexible circuit board FPC so that the flexible circuit board FPC bends towards the direction of the display side; and the laminating device is used for laminating and fixing the composite film layer 13 and the curved surface display panel 12, and the composite film layer 13 is laminated on one side of the flexible display screen 122 departing from the display side.
According to the laminating device provided by the embodiment of the invention, the FPC can be bent and fixed towards the display side direction through the circuit board adjusting device 21, so that when the composite film layer 13 and the curved surface display panel 12 are pressed and fixed through the pressing device, the relative position of the FPC relative to the curved surface display panel 12 can be adjusted through the adjusting device 21, and the problem that the FPC is damaged by pressure in the pressing process is avoided.
As shown in fig. 9, the laminating apparatus includes: the lining mold 11 is matched with the curved surface of the curved surface display panel 12, which deviates from the display side, in shape; the fixture 15 is used for unfolding the guide film 14, and placing the guide film 14 on a first side of the lining mold 11, wherein the first side is used for pressing the curved display panel 12; the composite film layer 13 is fixedly attached to the surface of one side, away from the lining mold 11, of the guide film 14; and a driving device (not shown in fig. 9) for driving the curved display panel 12 and/or the lining mold 11 to move.
The guide film 14 and the composite film layer 13 are temporarily fixed by an adhesive layer, so that the guide film 14 is removed after the composite film layer 13 is fixed with the flexible display screen 122. This glue film includes: the adhesive can be heated to be unstuck, or the optical adhesive can be irradiated by UV (ultraviolet light) to be unstuck, or the adhesive can be separated by chemical reagents and the like to be temporarily bonded and fixed. In the embodiment of the present invention, the adhesive layer is an optical adhesive capable of being debonded by UV irradiation, and the guiding film 14 can be removed by directly performing the UV irradiation, so that the operation is simple, and adverse effects on the flexible display screen 122 caused by the debonding treatment such as heating or chemical reagents are avoided.
Set up lining mould 11's shape with curved surface display panel 12 deviates from the curved surface adaptation of demonstration side, promptly lining mould 11 can be nested curved surface display panel 12 deviates from the curved surface of demonstration side, works as lining mould 11 orientation one side laminating of curved surface display panel 12 is fixed behind direction membrane 14, can make curved surface display panel 12 with lining mould 11 nests each other and the pressfitting is fixed, fixes compound rete 13 on direction membrane 14 surface at curved surface display panel 12 and deviates from the curved surface of demonstration side, be about to compound rete 13 fix the surface that deviates from the demonstration side at flexible display screen 122. Therefore, the composite film layer 13 and the flexible display screen 122 can be attached and fixed through simple pressing operation, and compared with a mode that the composite film layer 13 is fixed on the surface of the flexible display screen 122 through a lining mold with an unmatched shape, the lining mold 11 does not need to be moved in the scheme of the embodiment of the invention, and the operation is simple.
In other manners, the shape of the lining mold 11 may not be adapted to the curved surface of the curved display panel 12 away from the display side, for example, a surface of the lining mold 11 facing the curved display panel 12 is a convex curved surface, and a radius of the convex curved surface is smaller than a radius of a curved portion of the side surface of the curved display panel 12, so that the lining mold 11 can scan and move on the curved side of the curved display panel 12 to completely attach and fix the entire composite film layer 13 to the surface of the flexible display screen 122 away from the display side.
The drive device 11 includes: the first driving device is used for flattening the guide film 14 by pulling the clamp 15, driving the clamp 15 to vertically move towards the lining mold 11, and fixing the guide film 14 attached and fixed with the composite film layer 13 on the surface of the lining mold 11; and the second driving device is used for driving the curved display panel 12 and/or the lining mold 11 to move. The first driving device and the second driving device can be mechanical power equipment such as a mechanical arm or an adjusting platform and the like which can move horizontally and vertically. The mechanical power device can be driven by an electric motor or a hydraulic machine.
In the first pressing manner, when the flexible display screen 122 deviates from the surface pressing and fixing the composite film layer 13 on the display side, the lining mold 11 may be set to be fixed, and after the guide film 14 is fixed on the lining mold 11, the curved display panel 12 is moved by the second driving device so as to be pressed toward the lining mold 11, so that the composite film layer 13 is pressed and fixed on the surface of the flexible display screen 122 deviating from the display side.
In the second pressing manner, when the flexible display screen 122 deviates from the surface pressing fixed composite film layer 13 on the display side, the curved surface display panel 12 may be set to be fixed, and after the guide film 14 is fixed on the lining mold 11, the lining mold 11 is moved by the second driving device, so that the lining mold 11 and the composite film layer 13 on the surface thereof are pressed towards the curved surface display panel 12, so as to deviate from the surface pressing fixed composite film layer 13 on the display side on the flexible display screen 122.
In a third pressing manner, when the composite film layer 13 is pressed and fixed on the surface of the flexible display screen 122 departing from the display side, after the guide film 14 is fixed on the lining mold 11, the curved display panel 12 and the lining mold 11 are controlled to move by the second driving device, and both move relatively, so that the composite film layer 13 is pressed and fixed on the surface of the flexible display screen 122 departing from the display side.
In the embodiment of the invention, the first pressing mode is adopted, the lining mold does not need to be moved, and the curved-surface display panel 12 and the lining mold 11 with the composite film layer 13 on the surface can be moved by the mechanical arm to be pressed together, so that the assembly line operation is facilitated, and the production efficiency is improved.
It should be noted that, in the embodiment of the present invention, when the composite film layer 13 is pressed and fixed on the surface of the flexible display screen 122, any one of the three pressing manners may be adopted according to requirements. The first press-fitting method is not limited.
As shown in fig. 10, fig. 10 is a schematic structural view of another bonding apparatus for a curved display panel and a composite film layer according to an embodiment of the present invention, and based on the mode shown in fig. 9, in the mode shown in fig. 10, the circuit board adjusting device 21 is set to be a vacuum adsorption device 21a for adsorbing one side of the flexible circuit board FPC, which is bent toward the display side. In the mode, the position of the flexible circuit board FPC relative to the curved surface display panel 12 can be adjusted and fixed directly through the vacuum adsorption device 21a, the system structure is simple, and the operation mode is simple.
As shown in fig. 11, fig. 11 is a schematic structural view of another bonding apparatus for a curved display panel and a composite film layer according to an embodiment of the present invention, and based on the mode shown in fig. 9, in the mode shown in fig. 11, the circuit board adjusting device 21 is set as a tray 21b, and the tray 21b is used for supporting the flexible circuit board FPC so that one side of the flexible circuit board FPC facing the display side is bent. In the mode, the position of the flexible circuit board FPC relative to the curved surface display panel 12 can be adjusted and fixed directly through the tray 21b, the system structure is simple, and the operation mode is simple.
As described above, the attaching apparatus according to the embodiment of the present invention is used for the curved display panel 12, and the 3D cover plate 121 of the curved display panel 12 includes a planar portion and a curved side portion. Based on the structure of the 3D cover plate 121, the circuit board adjusting device 21 may also be as shown in fig. 12.
As shown in fig. 12, fig. 12 is a schematic structural diagram of another bonding apparatus for a curved display panel and a composite film layer according to an embodiment of the present invention, and based on the mode shown in fig. 9, in the mode shown in fig. 12, the circuit board adjusting device 21 is provided as an adjusting frame 21 c. The adjusting frame 21c is fixed on the display side; the adjusting bracket 21c includes: a first portion 31, a second portion 32 and an intermediate portion 33 connecting the first portion 31 and the second portion 32; the first portion 31 is located on a surface of the planar portion on a side away from the flexible display screen 122, the middle portion 33 is located on a surface of the curved side portion on a side away from the flexible display screen, and the second portion 32 is bent toward the display side, i.e., toward a display light emitting direction, relative to the middle portion 33. In the mode, the position of the Flexible Printed Circuit (FPC) relative to the curved display panel 12 can be adjusted and fixed directly through the adjusting frame 21c, the system structure is simple, and the operation mode is simple. Moreover, the adjusting frame 21c can be directly supported and fixed by the curved display panel 12, and the adjusting frame 21c can be fixed on the surface of the 3D cover plate 121 without separately providing a mechanical supporting component for the adjusting device 21.
In the manner shown in fig. 12, the first portion 31 and the curved display panel 12 may be relatively fixed by a clamp, or the first portion 31 and the curved display panel 12 may be relatively fixed by a glue layer, or the adjusting bracket 21c may be supported by a bracket, so as to achieve the relative fixing of the curved display panel 12 and the adjusting bracket 21 c. The relative fixing manner of the curved display panel 12 and the adjusting bracket 21c is not particularly limited in the present invention.
When the surface of the curved display panel 12 facing away from the display side is pressed and fixed with the composite film layer 13, the position of the flexible printed circuit board FPC may be adjusted and fixed in any one of the manners shown in fig. 10 to 12, or the manners shown in fig. 10 and 11 may be combined, or the manners shown in fig. 11 and 12 may be combined and used.
Fig. 13 and 14 show the adjusting bracket 21C according to an embodiment of the present invention, where fig. 13 is a top view of a surface of the adjusting bracket facing the flexible printed circuit board according to an embodiment of the present invention, and fig. 14 is a sectional view of fig. 13 in a direction C-C'. In this manner, the surface of the second portion 32 facing the curved display panel 12 has a glue surface 34, and the glue surface 34 is used for adhering and fixing the flexible printed circuit FPC. This way, the relative fixation of the flexible circuit board FPC to the second portion 32 can be achieved by a simple adhesive fixation of the adhesive surface 34. The adhesive surface 34 may be a double-sided tape, and the adhesive surface 34 and the flexible printed circuit board FPC may be separated by external force pulling.
In order to ensure that the adhesive surface 34 can be bonded and fixed with the flexible printed circuit FPC stably, the width of the adhesive surface is not less than that of the flexible printed circuit FPC, and the length of the adhesive surface is equal to that of the second portion 32. In other modes, the width of the adhesive surface 34 can be set to be smaller than the width of the Flexible Printed Circuit (FPC), and the length of the adhesive surface can be set to be smaller than the length of the second part 32, so that the adhesive surface 34 and the Flexible Printed Circuit (FPC) can be separated conveniently in the following process.
In other modes, the second portion 32 and the flexible printed circuit board FPC can be directly clamped and fixed by a clamp, and in this case, the adhesive surface 34 does not need to be arranged on the surface of the second portion 32.
Fig. 15-20 show an adjusting bracket 21 according to an embodiment of the present invention, fig. 15 is a top view of a surface of a side of another adjusting bracket facing a flexible printed circuit board according to an embodiment of the present invention, fig. 16 is a sectional view of fig. 15 in a direction of C-C ', fig. 17 is a sectional view of fig. 15 in a direction of D-D ', fig. 18 is a schematic structural view of the adjusting bracket shown in fig. 15 when a stopper is installed on the adjusting bracket, fig. 19 is a sectional view of fig. 18 in a direction of C-C ', and fig. 20 is a schematic view of the adjusting bracket shown in fig. 15 for fixing the flexible. In this mode, a side surface of the second portion 32 facing the curved display panel 12 has a groove 36 and a stopper 35 located in the groove 36, and the stopper 35 is detachably fixed in the groove 36, so as to clamp and fix the flexible printed circuit FPC in the groove 36. In this way, the groove 36 and the stopper 35 can fix the flexible printed circuit FPC to the second portion 32.
When the stopper 35 is installed and fixed in the groove 36, a gap is formed between the stopper 35 and the groove 36, and the thickness of the gap is smaller than that of the flexible printed circuit FPC, so that after the flexible printed circuit FPC is placed in the groove 36, the stopper 35 can be installed to extrude and fix the flexible printed circuit FPC. The thickness of the gap is the distance between the stop 35 and the bottom 36 of the groove in a direction perpendicular to the bottom of the groove 36.
The depth of the groove 36 is constant. The surface of the middle portion 33 facing the flexible wiring board FPC has a transition groove 37 communicating with the groove 36, and the depth of the transition groove 37 is gradually reduced from the second portion 32 toward the middle portion 33, so that the flexible wiring board FPC is prevented from being damaged by bending between the second portion 32 and the middle portion 33.
In the embodiment of the present invention, the first portion 31, the second portion 32, and the middle portion 33 are integrally formed. The adjusting frame 21 with the preset bending structure can be directly formed through an injection molding process, and the manufacturing process is simple and low in manufacturing cost. The bending amplitude between two adjacent portions can be set based on the adapted curved display panel 21. In this way, the same integrally molded adjusting bracket 21 can be used for the same plurality of curved display panels 21.
In other forms, the first portion 31 and the intermediate portion 33 are connected in rotation; and/or the second portion 32 is rotatably connected to the intermediate portion 33. In this way, the adjusting bracket 21c can be made to fit curved display panels 12 of different sizes.
As shown in fig. 21, fig. 21 is a schematic structural diagram of an adjusting bracket according to an embodiment of the present invention, and this mode is described by taking, as an example, a rotational connection between the first portion 31 and the middle portion 33, and a rotational connection between the second portion 32 and the middle portion 33. In this mode, the two parts are rotatably connected through the rotating shaft 41, and the two parts can also be rotatably connected through other rotating connection modes.
Based on the foregoing embodiment, another embodiment of the present invention further provides a method for attaching a curved display panel to a composite film layer, where the method for attaching is shown in fig. 22, and fig. 22 is a schematic flow diagram of the method for attaching provided by the embodiment of the present invention, and the method for attaching includes:
step S11: and providing a curved surface display panel and a composite film layer to be relatively attached and fixed.
The curved surface display panel is provided with a flexible display screen and a 3D cover plate attached to the display side of the flexible display screen, and a flexible circuit board is bound to the edge of the flexible display screen. The structure of the curved display panel can refer to the above embodiments, and is not described herein again.
Step S12: and after the flexible circuit board is bent towards the display side, the composite film layer is fixedly attached to the curved surface display panel, and the flexible display screen deviates from the surface of the display side.
The laminating equipment can be adopted to realize the relative lamination and fixation of the curved surface display panel and the composite film layer. The method is simple to operate and low in equipment cost.
In the attaching method of the embodiment of the invention, the composite film layer is unfolded and placed before being attached and fixed with the curved-surface display panel. The composite film layer can be attached and fixed on the guide film, and the guide film is stretched by the clamp to unfold the composite film layer. In the actual process, the composite film layer can be horizontally unfolded, so that the curved-surface display panel and the composite film layer can be pressed and fixed in the vertical direction conveniently.
As shown in fig. 23, fig. 23 is a schematic diagram illustrating a principle of adjusting a position of a flexible printed circuit board according to an embodiment of the present invention, where in the attaching method, bending the flexible printed circuit board toward the display side includes: fixing the flexible circuit board FPC at a preset position, so that an included angle beta of less than 90 degrees is formed between the flexible circuit board FPC and a plane S1 where the unfolded composite film layer 13 is located; the folding angle of the FPC of the flexible circuit board is not more than 180 degrees. The arrangement is characterized in that the folding angle of the flexible printed circuit FPC is not more than 180 degrees, so that the flexible printed circuit FPC is prevented from being excessively bent and damaged.
In the attaching method of the embodiment of the invention, the included angle beta ranges from 30 degrees to 60 degrees, so that the FPC can be prevented from being damaged in the pressing process only by folding the flexible circuit board with a smaller amplitude, the fracture problem caused by large-angle folding is avoided, and the poor lighting problem caused by the fracture problem is avoided.
The flexible printed circuit FPC can be kept in a flat state when being folded, so that one end of the flexible printed circuit FPC, which is close to the connection of the curved display panel 12, is bent. The plane of the FPC main body structure of the flexible circuit board and the plane S1 form an included angle beta smaller than 90 degrees.
If the plane S1 is a horizontally unfolded plane, the flexible wiring board FPC is in an initial state perpendicular to the plane S1 and extends from the curved display panel 12 toward the plane S1 under its own weight before the flexible wiring board FPC is adjusted.
In the attaching method according to the embodiment of the present invention, the fixing the flexible printed circuit board at a predetermined position includes:
adsorbing the surface of the flexible circuit board facing the display side through a vacuum adsorption device to adjust the position of the flexible circuit board; the structure and adjustment principle of the vacuum adsorption device can refer to the manner shown in fig. 10 in the above embodiment, and are not described herein again.
Or, supporting the surface of the flexible circuit board, which is far away from the display side, by a tray so as to adjust the position of the flexible circuit board; the structure and the adjusting principle of the tray can refer to the manner shown in fig. 11 in the above embodiment, and are not described herein again.
Or, the position of the flexible circuit board is adjusted through the adjusting frame; the 3D cover plate comprises a planar portion and a curved side portion; the adjusting bracket includes: a first portion, a second portion, and an intermediate portion connecting the first portion and the second portion; the first part is located on the surface of one side, away from the flexible display screen, of the plane part, the middle part is located on the surface of one side, away from the flexible display screen, of the bent side part, the second part is bent towards the display side relative to the middle part, and the flexible circuit board is fixed on the surface of one side, facing the curved surface display panel, of the second part. The structure and the adjusting principle of the adjusting frame can refer to the manner shown in fig. 11 in the above embodiment, and are not described herein again.
The laminating device according to any of the above embodiments may be used to laminate and fix the composite film layer on the surface of the curved display panel away from the display side, as shown in fig. 9,
in the attaching method according to the embodiment of the present invention, before attaching and fixing the composite film layer 13 and the flexible display screen 122, the attaching method further includes: the composite film layer 13 and the guide film 14 are fixedly attached; after the guide film 14 attached and fixed with the composite film layer 13 is unfolded through a clamp 15, attaching the guide film 14 to a first side of a fixed lining mold 11, wherein the first side is used for pressing with the curved surface display panel 12; the shape of the lining mold 11 is matched with the curved surface of the curved surface display panel 12 deviating from the display side; driving the curved panel 12 and/or the lining mold 11 to move by a driving device, so that the flexible display screen 122 is attached and fixed on the surface of the composite film layer 13; and after the curved surface display panel 12 is attached to the composite film layer 13, removing the guide film 14. The shape of the lining mold 11 is matched with the curved surface of the curved surface display panel 12 deviating from the display side, the curved surface display panel 12 and the lining mold 11 can be mutually nested and pressed and fixed through a pressing device, the composite film layer 13 on the surface of the guide film 14 is fixed on the curved surface of the curved surface display panel 12 deviating from the display side, and the curved surface display device is simple to operate and low in equipment cost.
In the attaching method according to the embodiment of the present invention, the guide film 14 and the composite film layer 13 are fixed by bonding with a UV adhesive, and after the flexible display screen 122 is fixed by attaching to the composite film layer 13, the adhesion of the UV adhesive is reduced by ultraviolet light irradiation to remove the guide film 14. This way can get rid of the guide film 14 directly through ultraviolet irradiation, avoids heating or chemical reagent separation glue film to lead to the adverse effect to flexible display screen 122.
The embodiments in the present description are described in a progressive manner, or in a parallel manner, or in a combination of a progressive manner and a parallel manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments can be referred to each other. For the pasting method disclosed in the embodiment, since it corresponds to the pasting device disclosed in the embodiment, the description is relatively simple, and the relevant points can be referred to the corresponding parts of the pasting device for description.
It should be noted that in the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only used for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (15)
1. The laminating equipment of the curved surface display panel and the composite film layer is characterized in that the curved surface display panel is provided with a flexible display screen and a 3D cover plate laminated on the display side of the flexible display screen, and a flexible circuit board is bound on the edge of the flexible display screen;
the attaching device includes:
the circuit board adjusting device is used for fixing the flexible circuit board so that the flexible circuit board is bent towards the direction of the display side;
and the laminating device is used for fixedly laminating the composite film layer with the curved surface display panel, and the composite film layer is laminated on one side of the flexible display screen, which deviates from the display side.
2. The laminating apparatus of claim 1, wherein the circuit board adjusting device is a vacuum suction device for sucking the flexible circuit board to bend toward the display side.
3. The laminating apparatus according to claim 1, wherein the wiring board adjusting device is a tray for supporting the flexible wiring board so that a side of the flexible wiring board facing the display side is bent.
4. The laminating device of claim 1, wherein the 3D cover sheet comprises a planar portion and a curved side portion;
the circuit board adjusting device is an adjusting frame, and the adjusting frame is fixed on the display side; the adjusting bracket includes: a first portion, a second portion, and an intermediate portion connecting the first portion and the second portion; the first portion is located on a surface of the planar portion on a side facing away from the flexible display screen, the middle portion is located on a surface of the curved side portion on a side facing away from the flexible display screen, and the second portion is bent toward the display side with respect to the middle portion.
5. The attaching device according to claim 4, wherein a surface of the second portion facing the curved display panel has an adhesive surface for adhering and fixing the flexible wiring board.
6. The attaching device according to claim 4, wherein a side surface of the second portion facing the curved display panel has a groove and a stopper located in the groove, and the stopper is detachably fixed in the groove and used for clamping and fixing the flexible circuit board in the groove.
7. The laminating device of claim 4, wherein the first portion, the second portion, and the intermediate portion are an integrally formed structure.
8. The laminating device of claim 4, wherein the first portion and the intermediate portion are rotationally coupled;
and/or the second part is rotationally connected with the middle part.
9. The laminating device of any one of claims 1-8, wherein the laminating apparatus comprises:
the shape of the lining mould is matched with the curved surface of the curved surface display panel deviating from the display side;
the fixture is used for unfolding a guide film, and placing the guide film on a first side of the lining mold, wherein the first side is used for pressing the curved surface display panel; the surface of one side of the guide film, which is far away from the lining mold, is fixedly attached with the composite film layer;
and the driving device is used for driving the curved surface display panel and/or the lining mold to move.
10. The method for laminating the curved-surface display panel and the composite film layer is characterized in that the curved-surface display panel is provided with a flexible display screen and a 3D cover plate laminated on the display side of the flexible display screen, and a flexible circuit board is bound to the edge of the flexible display screen;
the attaching method comprises the following steps:
and after the flexible circuit board is bent towards the display side, the composite film layer is fixedly attached to the curved surface display panel, and the flexible display screen deviates from the surface of the display side.
11. The attaching method according to claim 10, wherein the composite film layer is unfolded before being attached and fixed to the curved display panel;
the bending the flexible circuit board towards the display side comprises:
fixing the flexible circuit board at a preset position, so that an included angle of less than 90 degrees is formed between the flexible circuit board and the plane where the unfolded composite film layer is located; wherein, the folding angle of the flexible circuit board does not exceed 180 degrees.
12. The attaching method according to claim 11, wherein the fixing the flexible wiring board at a predetermined position includes:
adsorbing the surface of the flexible circuit board facing the display side through a vacuum adsorption device to adjust the position of the flexible circuit board;
or, supporting the surface of the flexible circuit board, which is far away from the display side, by a tray so as to adjust the position of the flexible circuit board;
or, the position of the flexible circuit board is adjusted through the adjusting frame; the 3D cover plate comprises a planar portion and a curved side portion; the adjusting bracket includes: a first portion, a second portion, and an intermediate portion connecting the first portion and the second portion; the first part is located on the surface of one side, away from the flexible display screen, of the plane part, the middle part is located on the surface of one side, away from the flexible display screen, of the bent side part, the second part is bent towards the display side relative to the middle part, and the flexible circuit board is fixed on the surface of one side, facing the curved surface display panel, of the second part.
13. The method of applying according to claim 11 wherein the included angle is in the range of 30 ° to 60 °.
14. The attaching method of claim 10, further comprising, before attaching and fixing the composite film layer to the flexible display screen:
the composite film layer is fixedly attached to the guide film;
after the guide film which is fixedly attached with the composite film layer is unfolded through a clamp, the guide film is attached to and fixed on a first side of a lining mold, and the first side is used for being pressed with the curved surface display panel; the shape of the lining mold is matched with the curved surface of the curved surface display panel deviating from the display side;
driving the bending panel and/or the lining mold to move through a driving device, so that the flexible display screen is attached and fixed on the surface of the composite film layer;
and removing the guide film after the curved surface display panel is attached to the composite film layer.
15. The attaching method according to claim 14, wherein the guide film and the composite film layer are fixed by UV adhesive, and after the flexible display screen is attached and fixed to the composite film layer, the adhesion of the UV adhesive is reduced by ultraviolet light irradiation to remove the guide film.
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