CN113263822A - Composite adhesive film laminating method of display module and display device - Google Patents
Composite adhesive film laminating method of display module and display device Download PDFInfo
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- CN113263822A CN113263822A CN202110585222.4A CN202110585222A CN113263822A CN 113263822 A CN113263822 A CN 113263822A CN 202110585222 A CN202110585222 A CN 202110585222A CN 113263822 A CN113263822 A CN 113263822A
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- adhesive layer
- bending area
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- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000010030 laminating Methods 0.000 title claims abstract description 36
- 239000002131 composite material Substances 0.000 title claims description 153
- 239000002313 adhesive film Substances 0.000 title claims description 61
- 229920000297 Rayon Polymers 0.000 claims abstract description 28
- 239000012528 membrane Substances 0.000 claims abstract description 20
- 238000005452 bending Methods 0.000 claims description 197
- 239000012790 adhesive layer Substances 0.000 claims description 163
- 239000010410 layer Substances 0.000 claims description 129
- 238000005096 rolling process Methods 0.000 claims description 104
- 239000000853 adhesive Substances 0.000 claims description 18
- 230000001070 adhesive effect Effects 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000001125 extrusion Methods 0.000 claims description 12
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 abstract description 9
- 239000000463 material Substances 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003475 lamination Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
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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
-
- 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
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- 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
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/10—Removing layers, or parts of layers, mechanically or chemically
Abstract
The embodiment of the application provides a display module assembly's compound glued membrane laminating method and display device, and at the in-process that display module assembly and compound glued membrane carry out the laminating, through the clamping component to the viscose layer of compound glued membrane near the tip in the district of buckling of display module assembly exert clamping-force, when the laminating in the district of buckling need be carried out to the plane district laminating back of viscose layer and display module assembly, remove again the clamping component is right the viscose layer with the clamping-force of the district that buckles and correspond one side can avoid compound glued membrane and plane district's laminating in-process viscose layer in advance with the district contact of buckling and lead to the problem of laminating badly.
Description
Technical Field
The application relates to the technical field of display, in particular to a composite adhesive film laminating method of a display module and a display device.
Background
With the development of display technology, the demands of end users for displays become more diverse. In order to obtain better visual experience, specially-shaped display terminals such as a waterfall screen and a flow sea screen are increasingly popular. Based on the display screen, the display screen gradually emerges from the process of changing from small-angle bending to right-angle bending and then changing to super-right-angle bending. However, the inventors have found that the display module with these bending characteristics has a difficult problem in manufacturing the curved portion during the manufacturing process. For example, after the screen body and the cover plate are attached, the composite adhesive film is attached to one surface of the screen body, which is away from the cover plate, and the problem of poor attachment of the composite adhesive film and the curved surface portion of the display module easily occurs in the attachment process of the composite adhesive film.
Disclosure of Invention
Based on the defects of the existing design, the application provides a composite adhesive film laminating method of a display module and a display device, which can avoid the problem of poor lamination caused by the fact that an adhesive layer contacts with a bending area in advance in the laminating process of a composite adhesive film and a plane area.
According to a first aspect of the application, a method for laminating a composite adhesive film of a display module is provided, the display module comprises a plane area and a bending area, and the method comprises the following steps:
clamping at least a support film formed on an adhesive layer of the composite adhesive film through a clamping assembly, and applying clamping force to the end part, which is used for being attached to the bending area, of the adhesive layer;
placing at least one part of one side of the adhesive layer, which is far away from the supporting film and is used for being attached to the plane area, on the plane area;
and rolling the rolling component from the position corresponding to the support film and the plane area to the position corresponding to the bending area, and releasing the clamping force of the clamping component on the support film, the adhesive layer and one side corresponding to the bending area when the rolling component rolls to the position corresponding to the bending area so as to attach the adhesive layer to the display module.
Based on the first aspect, the adhesive layer comprises a thermosensitive adhesive, the support film is a composite film layer arranged on the adhesive layer to form the composite adhesive film, and the rolling assembly comprises a roller and a heating element;
wherein, make roll extrusion subassembly from the position that support membrane and plane district correspond to roll extrusion to the position of kink district, include:
starting the heating element to heat the roller;
and rolling the roller from the position corresponding to the composite film layer and the plane area to the position of the bending area, and heating the adhesive layer by the roller through the composite film layer to change the bonding strength of the adhesive layer from the first bonding strength to the second bonding strength, wherein the second bonding strength is greater than the first bonding strength.
Based on the first aspect, the adhesive layer comprises a pressure sensitive adhesive, the supporting film is a composite film layer arranged on the adhesive layer, the adhesive layer and the composite film layer form the composite adhesive film, and the rolling assembly comprises a roller;
wherein, make roll extrusion subassembly from the position that support membrane and plane district correspond to roll extrusion to the position of kink district, include:
and rolling the roller from the position corresponding to the composite film layer and the plane area to the position of the bending area, and converting the bonding strength of the adhesive layer from a first bonding strength to a second bonding strength by applying the pressure of the roller to the adhesive layer, wherein the second bonding strength is greater than the first bonding strength.
Based on the first aspect, an orthographic projection of the composite film layer on a plane where the adhesive layer is located coincides with the adhesive layer;
wherein, through the support membrane that forms on the at least centre gripping viscose layer of centre gripping subassembly, right the viscose layer be used for with the clamping-force is applyed to the tip of bending zone laminating, include:
the end part of the composite adhesive film close to one side of the bending area is clamped by the clamping assembly so as to apply clamping force to the end part of the adhesive layer attached to the bending area.
Based on the first aspect, the display module comprises a first bending area and a second bending area which are respectively positioned at two opposite sides of the plane area;
wherein, make rolling press assembly follow the position that the support membrane corresponds with the plane district toward the position of district of buckling rolls to when the roll extrusion arrives the position that the district of buckling corresponds, remove the centre gripping subassembly to support the membrane with the viscose layer with the clamping-force of the district of buckling corresponds one side, make the viscose layer with the display module assembly laminating includes:
rolling the rolling assembly from the position of the composite film layer corresponding to the plane area to the position of the first bending area, and removing the clamping force of the clamping assembly on the composite film layer and the end part of the adhesive layer corresponding to the first bending area when the rolling assembly is rolled to the position corresponding to the first bending area, so that the adhesive layer is attached to the first bending area;
and rolling the rolling assembly from the position corresponding to the composite film layer and the plane area to the position corresponding to the second bending area, and releasing the clamping force of the clamping assembly on the composite film layer and the end part corresponding to the adhesive layer and the second bending area when the rolling assembly is rolled to the position corresponding to the second bending area, so that the adhesive layer is attached to the second bending area.
Based on the first aspect, the support film is a bonding guide film bonded on the adhesive layer, an orthographic projection of the bonding guide film on the plane where the adhesive layer is located covers the adhesive layer, and the bonding guide film comprises a clamping portion protruding towards the direction of the bending area relative to the adhesive layer;
wherein, through the support membrane that forms on the at least centre gripping viscose layer of centre gripping subassembly, right the viscose layer be used for with the clamping-force is applyed to the tip of bending zone laminating, include:
through the centre gripping subassembly centre gripping laminating guide film the clamping part to right the viscose layer be used for with the clamping-force is exerted to the tip of bending zone laminating.
Based on the first aspect, the method further comprises:
after the adhesive layer is attached to the display module, peeling the attachment guide film from the adhesive layer;
clamping the end part of a composite film layer, which is used for being attached to the adhesive layer positioned in the bending area, by the clamping assembly;
placing at least one part of the composite film layer which is used for being attached to the adhesive layer positioned in the plane area at the position of the adhesive layer corresponding to the plane area;
and rolling the rolling assembly from the position corresponding to the composite film layer and the plane area to the position corresponding to the bending area, and releasing the clamping force of the clamping assembly on the end part corresponding to the composite film layer and the bending area when the rolling assembly is rolled to the position corresponding to the bending area, so that the composite film layer is attached to the adhesive layer.
Based on the first aspect, the display module comprises a first bending area and a second bending area which are respectively positioned at two opposite sides of the plane area, and the attaching guide film comprises a first clamping part and a second clamping part which respectively correspond to the first bending area and the second bending area;
wherein, make rolling press assembly follow the position that the support membrane corresponds with the plane district toward the position of district of buckling rolls to when the roll extrusion arrives the position that the district of buckling corresponds, remove the centre gripping subassembly to support the membrane with the viscose layer with the clamping-force of the district of buckling corresponds one side, make the viscose layer with the display module assembly laminating includes:
rolling the rolling assembly from the position of the bonding guide film corresponding to the plane area to the position of the first bending area, and releasing the clamping force of the clamping assembly on the first clamping part of the bonding guide film when the rolling assembly is rolled to the position of the first bending area, so that the bonding guide film is bonded with the adhesive layer positioned in the first bending area;
and rolling the rolling assembly from the position corresponding to the bonding guide film and the plane area to the position of the second bending area, and releasing the clamping force of the clamping assembly on the second clamping part of the bonding guide film when the rolling assembly is rolled to the position corresponding to the second bending area, so that the composite film layer is bonded with the adhesive layer positioned in the second bending area.
Based on the first aspect, the rolling assembly rolls from the position where the composite film layer corresponds to the planar area to the position where the bending area is located, and when the rolling assembly rolls to the position where the bending area corresponds to the planar area, the clamping assembly releases the clamping force of the clamping assembly on the end portion where the composite film layer corresponds to the bending area, and the composite film layer is attached to the adhesive layer, including:
rolling the rolling assembly from the position of the composite film layer corresponding to the plane area to the position of the first bending area, and releasing the clamping force of the clamping assembly on the end part of the composite film layer corresponding to the first bending area when the rolling assembly is rolled to the position corresponding to the first bending area, so that the composite film layer is attached to the adhesive layer positioned in the first bending area;
and rolling the rolling assembly from the position corresponding to the composite film layer and the plane area to the position corresponding to the second bending area, and releasing the clamping force of the clamping assembly on the end part of the composite film layer corresponding to the second bending area when the rolling assembly is rolled to the position corresponding to the second bending area, so that the composite film layer is attached to the adhesive layer positioned in the second bending area.
In a second aspect, the present embodiment further provides a display device, where the display device includes the composite adhesive film and the display module bonded to each other by the above method.
Based on any one of the above aspects, the composite adhesive film laminating method for the display module and the display device provided by the embodiment of the application have the advantages that in the laminating process of the display module and the composite adhesive film, the clamping assembly applies clamping force to the end part, close to the bending area of the display module, of the adhesive layer of the composite adhesive film, and the problem of poor laminating caused by the fact that the adhesive layer is in contact with the bending area in advance in the laminating process of the composite adhesive film and the plane area is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic flow chart illustrating a method for attaching a composite adhesive film of a display module according to an embodiment of the present disclosure.
Fig. 2 is a schematic view of a process of clamping the composite adhesive film and the display module to attach to each other by the clamping assembly.
Fig. 3 is a schematic structural diagram of the composite adhesive film.
Fig. 4 is a schematic view of adhering a guide film on an adhesive layer to assist the adhesive layer to adhere to a display module.
Fig. 5 is a schematic view illustrating a process of clamping the clamping portion of the bonding guide film by the clamping assembly to assist the adhesive layer in bonding with the display module.
Fig. 6 is a schematic view of a process of clamping the composite film layer by the clamping assembly to assist the composite film layer and the adhesive layer in adhering.
Fig. 7 is a schematic view illustrating a process of rolling the rolling assembly toward the first bending region of the display module to attach the composite film layer to the adhesive layer.
Fig. 8 is a schematic view illustrating a process of rolling the rolling assembly toward the second bending region of the display module to attach the composite film layer to the adhesive layer.
Detailed Description
In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it should be understood that the drawings in the present application are for illustrative and descriptive purposes only and are not used to limit the scope of protection of the present application.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
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. The materials or starting materials used in the present application are commercially available from conventional sources and, unless otherwise specified, are used in the conventional manner in the art or in the product specification. In addition, any methods and materials similar or equivalent to those described herein can be used in the methods of the present application. The preferred methods and materials described in this application are exemplary only.
Based on the problems pointed out by the background art, the inventor finds that the bonding process of the display module and the composite adhesive film cannot be completed at one time, and the bonding process is generally divided into bonding in a plane area and bonding in a bending area (or a curved area and an arc area). When the plane area is jointed, the composite adhesive film is in a free state, so that the problem of poor jointing such as wrinkles and bubbles caused by contact with the bending area in advance is easy to occur.
In order to solve the problem, the inventor creatively provides a scheme that in the process of attaching the plane area, clamping equipment can be adopted to clamp the end part of the composite adhesive film corresponding to the bending area, and after the attaching of the plane area is completed, the clamping of the end part is released to complete the attaching of the bending area, so that the problem of poor attaching caused by the fact that the composite adhesive film is in contact with the bending area in advance in the attaching process of the plane area can be solved. Specific implementations of the above-described inventive concepts will now be described with reference to specific embodiments.
First, referring to fig. 1, fig. 1 is a schematic flow chart illustrating a method for bonding a composite adhesive film of a display module according to an embodiment of the present disclosure, in which the display module includes a planar area and a bending area, and the bending area may be referred to as a curved portion, an arc portion, an irregular portion, and the like. The inflection region and the planar region may be a unitary structure. The following is an exemplary description of a specific implementation of the method.
And S100, clamping at least a support film formed on the adhesive layer of the composite adhesive film through the clamping assembly, and applying clamping force to the end part, which is used for being attached to the bending area, of the adhesive layer.
In this embodiment, the centre gripping subassembly can be the clamping jaw to the tip that is used for with the laminating of buckling area to the viscose layer exerts clamping-force, avoids the viscose layer to be in free state and contact with the buckling area in advance at the in-process with the laminating of plane district.
And S200, placing at least one part of one side of the adhesive layer, which is far away from the supporting film and is used for being attached to the plane area, on the plane area.
In this embodiment, during the implementation, can drive the viscose layer and the face of treating the binding of display module assembly through the centre gripping subassembly and counterpoint, then place at least partly on the plane district with the viscose layer to do benefit to developing of follow-up laminating step.
In this embodiment, the position where the rolling assembly rolls to the bending region may be a set position, and at this time, the clamping force applied to the side of the support film corresponding to the bending region is released. The set position may be any position of the bending region, and may be determined in advance according to an actual situation (for example, the bending angle of the bending region). For example, the set position may be a position along the extension direction of the planar area to the bending area and located at the center of the bending area, and the specific implementation may not be limited thereto. For example, the set position may be determined by the bonding operation subject from the bonding experience during the bonding operation, and the set positions corresponding to different bonding operations may be the same or different as long as it is ensured that the adhesive layer does not come into contact with the bending region in advance during the bonding of the flat region.
The gluing process shown in fig. 1 exemplarily summarizes the problem of poor gluing caused by the fact that the adhesive layer contacts with the bending area in advance in the gluing process of the composite adhesive film and the plane area through the clamping assembly. For different implementation manners of the adhesive layer, the implementation scheme of this embodiment for fig. 1 can be divided into different technical implementation branches, which are described in detail below.
< first technical implementation branch >
The adhesive layer of the composite adhesive film can be designed as an adhesive material with a variable adhesive strength under an external influence, for example, the adhesive layer is in a first adhesive strength state with low viscosity or no viscosity before the external influence, and the adhesive layer is in a second adhesive strength state with viscosity or high viscosity after the external influence.
Referring to fig. 2 and 3, fig. 2 is a schematic view illustrating a process of clamping the composite adhesive film by the clamping assembly to attach to the display module. Fig. 3 is a schematic structural diagram of the composite adhesive film.
In one possible embodiment, the adhesive layer 200 may include a heat sensitive adhesive, and accordingly, the supporting film may be the composite film layer 22 disposed on the adhesive layer 21. Thus, the adhesive layer 21 and the composite film layer 22 form the composite adhesive film 200. The orthographic projection of the composite film layer 22 on the plane of the adhesive layer 21 is superposed with the adhesive layer 21. The display module 100 is attached to the cover 400 before the display module is attached to the composite adhesive film 200. The display module 100 includes a planar area 11 and a bending area 12.
As shown in fig. 3, the composite adhesive film 200 may include an adhesive layer 21 and a composite film layer 22 on the adhesive layer 21, and the composite film layer 22 may include a buffer layer 221 on the adhesive layer 21, an insulating layer 222 on a side of the buffer layer 221 away from the adhesive layer, a conductive layer 223 on a side of the insulating layer 222 away from the buffer layer 221, and a protective layer 224 on a side of the conductive layer 223 away from the insulating layer 222. In this embodiment, the buffer layer 221 may include foam. The insulating layer 222 serves to achieve isolation of the conductive layer 223 from other conductive portions outside. The conductive layer 223 may be used to realize conductive properties, for example, may be used as an electrostatic conductive layer to realize an antistatic effect.
With further reference to figure 2, the rolling assembly 300 may include rollers 31 and heating elements 32. A specific implementation of step S300 is exemplarily described as follows.
First, the heating element 32 is activated to heat the roller 31. For example, the heating element 32 may be a thermistor or a heating wire embedded in the roller 31, the heating element 32 may be connected to an external power source, and after the external power source is powered on, the heating element 32 may be activated to heat the roller 31.
Then, the roller 31 is rolled from the position of the composite film layer 22 corresponding to the planar area 11 to the position of the bending area 12, and the roller 31 heats the adhesive layer 21 through the composite film layer 22, so that the adhesive strength of the adhesive layer 21 is changed from the first adhesive strength to a second adhesive strength, wherein the second adhesive strength is greater than the first adhesive strength.
In another possible embodiment, the adhesive layer may include a heat sensitive adhesive instead of a pressure sensitive adhesive. Based on this, the rolling assembly 300 may include only the roller 31, and the heating element 32 is omitted.
In this case, still another specific implementation of step S300 is exemplarily described as follows.
The roller 31 is rolled from the position of the composite film layer 22 corresponding to the planar area 11 to the position of the bending area 12, and the pressure applied to the adhesive layer 21 by the roller 31 changes the adhesive strength of the adhesive layer 21 from the first adhesive strength to the second adhesive strength.
On the premise that the supporting film is the composite film layer 22 and the adhesive layer 21 includes a thermal sensitive adhesive or a pressure sensitive adhesive, in step S100, as shown in fig. 2, the clamping assembly 500 may clamp the adhesive layer 21 and the end portion of the composite film layer 22 close to the bending region 12, so as to apply a clamping force to the end portion of the adhesive layer 21 for being attached to the bending region 12.
In addition, in an example, the display module 100 may include a planar area 11 and two bending areas 12 (e.g., a first bending area and a second bending area) respectively located at two opposite sides of the planar area 11. In this case, the clamping assembly 500 may include two clamping jaws for clamping both side ends of the composite adhesive film 200 corresponding to the first bending region and the second bending region, respectively. Because the viscosity of the adhesive layer 21 is low or no before the rolling and bonding, when the rolling assembly 300 rolls to the position corresponding to the bending region 12, the clamping jaws can be easily separated from the adhesive layer 21 to release the clamping of the adhesive layer 21, so that the adhesive layer 21 can be further bonded to the bending region 12.
With two bending zones 12, the step S300 may include the following two steps.
Firstly, the rolling assembly 300 rolls from the position corresponding to the composite film layer 22 and the plane area 11 to the position corresponding to the first bending area, and when the rolling assembly rolls to the position corresponding to the first bending area, the clamping force of the clamping assembly 500 on the composite film layer 22 and the end part corresponding to the adhesive layer 21 and the first bending area is released, so that the adhesive layer 21 is attached to the first bending area;
the rolling assembly 300 rolls from the position corresponding to the composite film layer 22 and the planar area 11 to the position corresponding to the second bending area, and when the rolling assembly rolls to the position corresponding to the second bending area, the clamping force of the clamping assembly 500 on the composite film layer 22 and the end portions of the adhesive layer 21 corresponding to the second bending area is released, so that the adhesive layer 21 is attached to the second bending area.
To sum up, in the first technical branch, through the technical scheme that the adhesive layer 21 is designed to include thermal sensitive adhesive or pressure sensitive adhesive, before the composite adhesive film 200 is attached to the display module 100, the viscosity of the adhesive layer 21 is low or no viscosity, the end of the composite adhesive film 200 can be clamped by the clamping component 500, and then when the composite adhesive film 200 is rolled and attached to the display module 100, the adhesive layer 21 of the composite adhesive film 200 can be prevented from contacting the bending area 12 in advance, and after the attachment of the plane area 11 is completed, the clamping force on the end of the composite adhesive film 200 is released, so that the complete attachment of the composite adhesive film 200 to the display module 100 is realized. Compared with the prior art which adopts the conventional laminating mode of the composite adhesive film, the problems of poor lamination such as laminating wrinkles and bubbles can be avoided.
< second technical implementation branch >
As shown in fig. 4, a schematic view of adhering a guide film on an adhesive layer to assist the adhesive layer to adhere to a display module is shown. For this reason, the support film may be the bonding guide film 211 provided on the adhesive layer 21, and the orthogonal projection of the bonding guide film 211 on the plane of the adhesive layer 21 covers the adhesive layer 21. In this way, the bonding guide film 211 includes a clamping portion protruding toward the bending region 12 with respect to the adhesive layer 21, for example, a first clamping portion 2111 and a second clamping portion 2112 at positions corresponding to the first bending region and the second bending region, respectively.
Based on the above scheme, as shown in fig. 5, fig. 5 is a schematic diagram illustrating a process of clamping the clamping portion of the bonding guide film 211 by the clamping assembly 500 to assist the bonding 21 to the display module 100. Step S100 may clamp the clamping portion of the bonding guide film 211 by the clamping assembly 500 to apply a clamping force to the end of the adhesive layer 21 for bonding with the bending region 12.
On the basis of the above scheme, after the adhesive layer 21 is attached to the display module 100, the method provided in this embodiment may further include the following steps.
In step S400, the bonding guide film 211 is peeled off from the adhesive layer 21.
Step S500, clamping the composite film layer 22 of the composite adhesive film 200 by the clamping assembly 500 for attaching to the adhesive layer 21 located in the bending region 12, as shown in fig. 6.
Step S600, placing at least a portion of the composite film layer 22, which is used to adhere to the adhesive layer 21 located in the planar area 11, at a position where the adhesive layer 21 corresponds to the planar area 11, as shown in fig. 6.
Step S700, rolling the rolling assembly 300 from the position of the composite film layer 22 corresponding to the planar area 11 to the position of the bending area 12, and releasing the clamping force of the clamping assembly 500 on the end of the composite film layer 22 corresponding to the bending area when the rolling assembly is rolled to the position corresponding to the bending area 12, so as to attach the composite film layer 22 to the adhesive layer 21.
In step S700, the display module 100 includes a first bending region (e.g., 12a) and a second bending region (e.g., 12b) respectively located at two opposite sides of the flat region 11.
First, for example, as shown in fig. 7, a schematic process of rolling the rolling assembly 300 toward the first bending region 12a of the display module 100 to attach the composite film layer 22 to the adhesive layer 21 is shown. In this embodiment, the rolling assembly 300 may roll from the position of the composite film layer 22 corresponding to the planar area 11 to the position of the first bending area 12a, and when the rolling assembly rolls to the position corresponding to the first bending area 12a, the clamping force of the clamping assembly on the end portions of the composite film layer 22 corresponding to the first bending area 12a is released, so that the composite film layer 22 is attached to the adhesive layer 211 located in the first bending area 12 a.
Next, for example, as shown in fig. 8, fig. 8 is a schematic view illustrating a process of rolling the rolling assembly 300 toward the second bending region 12b of the display module 100 to attach the composite film layer 22 to the adhesive layer 21. In this embodiment, the rolling assembly 300 may roll from the position of the composite film layer 22 corresponding to the planar area 11 to the position of the second bending area 12b, and when the rolling assembly rolls to the position corresponding to the second bending area 12b, the clamping force of the clamping assembly 500 on the end portions of the composite film layer 22 corresponding to the second bending area 12b is released, so that the composite film layer is attached to the adhesive layer 21 located in the second bending area 12 b.
In addition, the bonding method of the bonding guide film 211 and the adhesive layer 21 includes the following two parts in the case of having two bending regions.
A first part, rolling the rolling assembly 300 from the position of the bonding guide film 211 corresponding to the planar area 11 to the position of the first bending area 12a, and releasing the clamping force of the clamping assembly 500 on the first clamping portion 2111 of the bonding guide film 211 when the rolling assembly rolls to the position corresponding to the first bending area 12a, so that the bonding guide film 211 is bonded to the adhesive layer 21 located in the first bending area 12 a;
the rolling unit 300 rolls the bonding guide film 211 from the position corresponding to the flat area 11 to the position corresponding to the second bending area 12b, and releases the clamping force of the clamping unit 500 on the second clamping portion 2112 of the bonding guide film 211 when the bonding guide film 211 is rolled to the position corresponding to the second bending area 12b, so that the composite film layer 22 is bonded to the adhesive layer 21 located in the second bending area 12 b.
Thus, in the second technical branch, the adhesive layer 21 is adhered to the composite film layer 22 twice, and the adhesive layer 21 clamps the end of the adhesive layer 21 by the way of the adhesion guide film 211, so that poor adhesion caused by contact between the adhesive layer 21 and the bending area 12 in advance when the adhesive layer 21 is adhered to the plane area 11 is avoided. Secondly, in the laminating process of compound rete 22 and viscose layer 21, compound rete 22 itself does not have viscidity, can pass through the tip of centre gripping subassembly 500 centre gripping compound rete 22, avoids compound rete 22 and the contact of viscose layer 21 that is located bending zone 12 in advance, leads to compound rete 22's laminating badly. Therefore, the problem of poor adhesion between the entire composite adhesive film 200 and the display module 100 in the prior art can be solved.
Further, for the above two technical branches, on the premise that the display module includes the first bending region 12a and the second bending region 12b, one possible implementation manner of the step S200 is exemplarily described as follows.
Firstly, rolling the rolling component 300 from the position corresponding to the support film and the plane area to the position of the first bending area 12a, and when rolling to the position corresponding to the first bending area 12a, releasing the clamping force of the clamping component on the end part corresponding to the support film and the first bending area 12a, so that the adhesive layer 21 is attached to the first bending area 12 a;
then, the rolling unit 300 rolls the support film from the position corresponding to the flat area 11 to the position corresponding to the second bending area 12b, and when the support film is rolled to the position corresponding to the second bending area 12b, the clamping force of the clamping unit on the end portion corresponding to the support film and the second bending area 12b is released, so that the adhesive layer 21 is attached to the second bending area 12 b.
The following describes an exemplary implementation process of the display module 100 and the composite adhesive film 200 respectively corresponding to the two technical branches.
First, for the first technical branch, a specific implementation flow is described as follows.
First, the clamping assembly 500 clamps the end of the composite adhesive film 200 corresponding to the bending region 12, wherein the composite adhesive film 200 includes an adhesive layer 21 and a composite film layer 22 on the adhesive layer 21.
Next, at least a portion of the adhesive layer 21 for adhering to the flat area 11 is placed on the flat area 11.
Then, the rolling assembly 300 rolls from the position of the composite film layer 22 corresponding to the flat area 11 to the position of the bent area 12, so that the bonding strength of the rolled position of the adhesive layer 21 is changed from a first bonding strength to a second bonding strength, and the second bonding strength is greater than the first bonding strength.
Finally, when the rolling assembly 300 rolls to the position corresponding to the bending area 12, the clamping force of the clamping assembly on the end part of the composite adhesive film corresponding to the set position is released, so that the composite adhesive film is attached to the display module.
Secondly, for the second technical branch, a specific implementation flow is described as follows.
(1) An adhesion guide film 211 is formed on the adhesive layer 21, and an orthographic projection of the adhesion guide film 211 on the plane of the adhesive layer 21 covers the adhesive layer 21. The bonding guide film 211 includes a holding portion protruding in the direction of the folding portion 12 with respect to the adhesive layer 21.
(2) The clamping unit 500 clamps the clamping portion of the bonding guide film 211 to apply a clamping force to the end of the adhesive layer 21 for bonding to the bending region 12.
(3) The rolling unit 300 rolls from the position corresponding to the bonding guide film 211 and the flat area 11 to the position corresponding to the bending area 12, and releases the clamping force of the clamping unit 500 on the clamping portion corresponding to the bonding guide film 211 and the bending area 12 when the rolling unit rolls to the position corresponding to the bending area 12, so that the adhesive layer 21 is bonded to the display module 100.
(4) The bonding guide film 211 is peeled off from the adhesive layer 21.
(5) The end of the composite film layer 22 for attachment to the adhesive layer 21 corresponding to the fold region 12 is clamped by the clamping assembly 500.
(6) And placing at least one part of the composite film layer 22, which is used for being attached to the adhesive layer 21 corresponding to the plane area 11, at the position where the adhesive layer 21 corresponds to the plane area 11.
(7) The rolling assembly 300 rolls from the position of the composite film layer 22 corresponding to the planar area 11 to the position of the bending area 12, and when the rolling assembly rolls to the position corresponding to the bending area 12, the clamping force of the clamping assembly 500 on the end portion of the composite film layer corresponding to the bending area 12 is released, and the composite film layer 22 is attached to the adhesive layer 21.
Further, the embodiment of the present application further provides a display device, the display device includes a display module 100 and a composite adhesive film 200, and the display module 100 and the composite adhesive film 200 are attached by the above attaching method. The display device may further include a cover plate 400, wherein the cover plate 400 is attached to a side of the display module 100 away from the composite adhesive film 200.
To sum up, in the process of attaching the display module 100 to the composite adhesive film 200, the clamping assembly applies the clamping force to the end of the adhesive layer 21 of the composite adhesive film 200 close to the bending area 12 of the display module 100, so as to avoid the problem of poor attachment caused by the fact that the adhesive layer 21 contacts with the bending area 12 in advance in the process of attaching the composite adhesive film 200 to the plane area 11.
The embodiments described above are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the application, but is merely representative of selected embodiments of the application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims. Moreover, all other embodiments that can be made available by a person skilled in the art without making any inventive step based on the embodiments of the present application shall fall within the scope of protection of the present application.
Claims (10)
1. The method for laminating the composite adhesive film of the display module is characterized in that the display module comprises a plane area and a bending area, and the method comprises the following steps:
clamping at least a support film formed on an adhesive layer of the composite adhesive film through a clamping assembly, and applying clamping force to the end part, which is used for being attached to the bending area, of the adhesive layer;
placing at least one part of one side of the adhesive layer, which is far away from the supporting film and is used for being attached to the plane area, on the plane area;
and rolling the rolling component from the position corresponding to the support film and the plane area to the position corresponding to the bending area, and releasing the clamping force of the clamping component on the support film, the adhesive layer and one side corresponding to the bending area when the rolling component rolls to the position corresponding to the bending area so as to attach the adhesive layer to the display module.
2. The method of claim 1, wherein the adhesive layer comprises a heat sensitive adhesive, the support film is a composite film layer disposed on the adhesive layer to form the composite adhesive film, and the rolling assembly comprises a roller and a heating element;
wherein, make roll extrusion subassembly from the position that support membrane and plane district correspond to roll extrusion to the position of kink district, include:
starting the heating element to heat the roller;
and rolling the roller from the position corresponding to the composite film layer and the plane area to the position of the bending area, and heating the adhesive layer by the roller through the composite film layer to change the bonding strength of the adhesive layer from the first bonding strength to the second bonding strength, wherein the second bonding strength is greater than the first bonding strength.
3. The method of claim 1, wherein the adhesive layer comprises a pressure sensitive adhesive, the support film is a composite film layer disposed on the adhesive layer, the adhesive layer and the composite film layer form the composite adhesive film, and the rolling assembly comprises a roller;
wherein, make roll extrusion subassembly from the position that support membrane and plane district correspond to roll extrusion to the position of kink district, include:
and rolling the roller from the position corresponding to the composite film layer and the plane area to the position of the bending area, and converting the bonding strength of the adhesive layer from a first bonding strength to a second bonding strength by applying the pressure of the roller to the adhesive layer, wherein the second bonding strength is greater than the first bonding strength.
4. The method according to claim 2 or 3, wherein an orthographic projection of the composite film layer on the plane of the adhesive layer is coincident with the adhesive layer;
wherein, through the support membrane that forms on the at least centre gripping viscose layer of centre gripping subassembly, right the viscose layer be used for with the clamping-force is applyed to the tip of bending zone laminating, include:
the end part of the composite adhesive film close to one side of the bending area is clamped by the clamping assembly so as to apply clamping force to the end part of the adhesive layer attached to the bending area.
5. The method according to claim 2 or 3, wherein the display module comprises a first bending region and a second bending region respectively located at two opposite sides of the planar region;
wherein, make rolling press assembly follow the position that the support membrane corresponds with the plane district toward the position of district of buckling rolls to when the roll extrusion arrives the position that the district of buckling corresponds, remove the centre gripping subassembly to support the membrane with the viscose layer with the clamping-force of the district of buckling corresponds one side, make the viscose layer with the display module assembly laminating includes:
rolling the rolling assembly from the position of the composite film layer corresponding to the plane area to the position of the first bending area, and removing the clamping force of the clamping assembly on the composite film layer and the end part of the adhesive layer corresponding to the first bending area when the rolling assembly is rolled to the position corresponding to the first bending area, so that the adhesive layer is attached to the first bending area;
and rolling the rolling assembly from the position corresponding to the composite film layer and the plane area to the position corresponding to the second bending area, and releasing the clamping force of the clamping assembly on the composite film layer and the end part corresponding to the adhesive layer and the second bending area when the rolling assembly is rolled to the position corresponding to the second bending area, so that the adhesive layer is attached to the second bending area.
6. The method according to claim 1, wherein the support film is a bonding guide film bonded to the adhesive layer, an orthographic projection of the bonding guide film on a plane of the adhesive layer covers the adhesive layer, and the bonding guide film comprises a clamping portion protruding towards the direction of the bending area relative to the adhesive layer;
wherein, through the support membrane that forms on the at least centre gripping viscose layer of centre gripping subassembly, right the viscose layer be used for with the clamping-force is applyed to the tip of bending zone laminating, include:
through the centre gripping subassembly centre gripping laminating guide film the clamping part to right the viscose layer be used for with the clamping-force is exerted to the tip of bending zone laminating.
7. The method of claim 6, further comprising:
after the adhesive layer is attached to the display module, peeling the attachment guide film from the adhesive layer;
clamping the end part of a composite film layer, which is used for being attached to the adhesive layer positioned in the bending area, by the clamping assembly;
placing at least one part of the composite film layer which is used for being attached to the adhesive layer positioned in the plane area at the position of the adhesive layer corresponding to the plane area;
and rolling the rolling assembly from the position corresponding to the composite film layer and the plane area to the position corresponding to the bending area, and releasing the clamping force of the clamping assembly on the end part corresponding to the composite film layer and the bending area when the rolling assembly is rolled to the position corresponding to the bending area, so that the composite film layer is attached to the adhesive layer.
8. The method according to claim 7, wherein the display module comprises a first bending area and a second bending area respectively located at two opposite sides of the plane area, and the attaching guide film comprises a first clamping portion and a second clamping portion respectively corresponding to the first bending area and the second bending area;
wherein, make rolling press assembly follow the position that the support membrane corresponds with the plane district toward the position of district of buckling rolls to when the roll extrusion arrives the position that the district of buckling corresponds, remove the centre gripping subassembly to support the membrane with the viscose layer with the clamping-force of the district of buckling corresponds one side, make the viscose layer with the display module assembly laminating includes:
rolling the rolling assembly from the position of the bonding guide film corresponding to the plane area to the position of the first bending area, and releasing the clamping force of the clamping assembly on the first clamping part of the bonding guide film when the rolling assembly is rolled to the position of the first bending area, so that the bonding guide film is bonded with the adhesive layer positioned in the first bending area;
and rolling the rolling assembly from the position corresponding to the bonding guide film and the plane area to the position of the second bending area, and releasing the clamping force of the clamping assembly on the second clamping part of the bonding guide film when the rolling assembly is rolled to the position corresponding to the second bending area, so that the composite film layer is bonded with the adhesive layer positioned in the second bending area.
9. The method of claim 8, wherein the rolling assembly from the position of the composite film layer corresponding to the planar area to the position of the bending area, and releasing the clamping force of the clamping assembly on the end of the composite film layer corresponding to the bending area when the rolling assembly is rolled to the position of the bending area, so as to attach the composite film layer to the adhesive layer comprises:
rolling the rolling assembly from the position of the composite film layer corresponding to the plane area to the position of the first bending area, and releasing the clamping force of the clamping assembly on the end part of the composite film layer corresponding to the first bending area when the rolling assembly is rolled to the position corresponding to the first bending area, so that the composite film layer is attached to the adhesive layer positioned in the first bending area;
and rolling the rolling assembly from the position corresponding to the composite film layer and the plane area to the position corresponding to the second bending area, and releasing the clamping force of the clamping assembly on the end part of the composite film layer corresponding to the second bending area when the rolling assembly is rolled to the position corresponding to the second bending area, so that the composite film layer is attached to the adhesive layer positioned in the second bending area.
10. A display device, comprising the composite adhesive film and a display module bonded to each other by the method according to any one of claims 1 to 9.
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| CN202110585222.4A CN113263822A (en) | 2021-05-27 | 2021-05-27 | Composite adhesive film laminating method of display module and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110585222.4A CN113263822A (en) | 2021-05-27 | 2021-05-27 | Composite adhesive film laminating method of display module and display device |
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