CN112309255A - Display module attaching method and display device - Google Patents
Display module attaching method and display device Download PDFInfo
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- CN112309255A CN112309255A CN202011195483.7A CN202011195483A CN112309255A CN 112309255 A CN112309255 A CN 112309255A CN 202011195483 A CN202011195483 A CN 202011195483A CN 112309255 A CN112309255 A CN 112309255A
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- 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
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- 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
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Abstract
The invention provides a display module attaching method and a display device, wherein the attaching method comprises the following steps: the display module comprises a pre-bending display module base body, wherein a stress adjusting layer is arranged on one side of the display module base body, which is far away from a bearing surface of a pre-bending jig; stripping the stress adjusting layer with at least partial thickness to form a display module; and the display module is attached to the curved cover plate. The laminating method can adjust the position of the neutral layer of the display matrix in the pre-bending process, protect the display module and improve the laminating yield.
Description
Technical Field
The application relates to the technical field of display, in particular to a display module attaching method and a display device.
Background
The OLED (Organic Light Emitting Diode) panel has good flexibility and is widely used in curved display devices. With the development of technology, curved display devices are developed from two curved surfaces to more curved surfaces such as four curved surfaces, and the curvature of the curved display devices is gradually increased, so that a display device with a large-curvature inverted shape is a new trend.
However, in the process of forming the curved surface device by attaching the flexible screen and the curved surface cover plate, the appearance of the flexible screen is often required to be adjusted in advance, so that the flexible screen body is prevented from contacting with the edge part of the curved surface cover plate first, and attachment bubbles are avoided. However, in the pre-adjustment process, the flexible panel needs to be pulled and bent, and the flexible panel includes a plurality of stacked film layers, such as a driving layer, a light emitting layer, an encapsulation layer, and the like, and the properties of the film layers are different, so that the flexible panel is damaged in the pulling process, and the yield of the display device is low.
Disclosure of Invention
In view of this, the present invention provides a display module attaching method and a display device, which solve the problem of damage in the screen process.
The invention provides a display module attaching method, which comprises the following steps:
the display module comprises a pre-bending display module base body, wherein a stress adjusting layer is arranged on one side of the display module base body, which is far away from a bearing surface of a pre-bending jig;
stripping the stress adjusting layer with at least partial thickness to form a display module;
and the display module is attached to the curved cover plate.
Further, the display module is arranged on the guide film before pre-bending;
the pre-curved display module base member includes: and controlling the guide film to enable the display module matrix to be attached to the bearing surface of the pre-bending jig along with the shape.
Further, the display module base member includes flexible screen body and stress adjustment layer, flexible screen body is including base, luminescent layer, the encapsulated layer that stacks gradually, flexible screen body has first neutral layer, the display module base member has second neutral layer, first neutral level in the encapsulated layer is close to base one side, second neutral level is in the encapsulated layer or the encapsulated layer deviates from base one side.
Further, the thickness of the stress adjusting layer is inversely related to the Young's modulus of the stress adjusting layer.
Further, the stress adjusting layer comprises a plane area and an area to be bent, and the thickness of the area to be bent is larger than that of the plane area.
Further, the stress adjusting layer comprises a first sub-layer and a second sub-layer, and the first sub-layer is located on one side, away from the pre-bending jig, of the second sub-layer;
and the step of stripping the stress adjusting layer with at least partial thickness to form the display module comprises the step of stripping the first sublayer to form the display module.
Further, the second sublayer material is liquid optical cement.
Further, the stress adjusting layer comprises a body layer and a bonding layer, and the bonding layer is made of a UV debonding adhesive;
the step of stripping at least part of the thickness of the stress adjusting layer before forming the display module further comprises utilizing UV light to decompose and adhere the bonding layer.
Further, coating liquid optical cement on the surface of the display module after stripping the stress adjusting layer with at least partial thickness.
The invention further provides a display device which is prepared by adopting the display module attaching method.
According to the display module attaching method and the display device, due to the existence of the stress adjusting layer, the neutral surface of the display module can be adjusted, so that the neutral layer of the display module base body is positioned in the packaging layer or the packaging layer deviates from one side of the pre-bending jig in the attaching and pre-bending process, the tensile force of the packaging layer is avoided, and the problem of reduction of the yield of the display device caused by damage of the packaging layer is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. Wherein:
FIG. 1 a-FIG. 1b are schematic diagrams illustrating a bonding method in the prior art;
fig. 2a to fig. 2d are schematic diagrams of a bonding method according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application belong to the protection scope of the present application.
As mentioned in the background art, in the process of attaching the flexible screen to the curved cover plate, in order to prevent the flexible screen and the curved portion of the edge of the curved cover plate from contacting first to form a closed space with accumulated bubbles, the flexible screen needs to be bent in advance, and referring to fig. 1a and 1b, a schematic diagram of an attaching method in the prior art is shown, in which a profiling pressure head 30 presses the flexible screen 20 to the inner side of the curved cover plate 10, and the profiling pressure head 30 is designed to have an arc top surface with a high middle part and a low edge in advance, so as to attach the flexible screen 20 and the curved cover plate 10 in the order from a plane to a curved surface, thereby avoiding the formation of the closed space with accumulated bubbles. Before the flexible screen 20 and the curved cover plate 10 are attached, the flexible screen 20 needs to be attached to the profiling indenter 30, namely, the flexible screen pre-bending process. After pre-bending, the flexible screen 20 is changed from the flat state shown in fig. 1a to the curved state shown in fig. 1b, so as to avoid the first contact between the flexible screen 20 and the curved edge portion of the curved cover plate 10 during the attaching process. Obviously, in the process from the flat state to the curved state, the flexible screen 20 is stretched, and the flexible screen 20 corresponding to the curved portion of the cover plate is largely bent. Because of flexible screen 20 includes the range upon range of functional film layer of multilayer, each functional film layer can the bending property difference, inorganic rete has more weak resistant bending property usually, like the encapsulated layer, because of inorganic layer has excellent separation water oxygen performance, so the encapsulated layer includes at least one deck inorganic layer usually, at the screen body 20 preflex in-process, flexible screen 20 laminates the arc top surface of profile modeling pressure head 30, buckle the damage that easily causes the flexible screen, especially the damage of encapsulated layer, and then cause display device's function to reduce or lose efficacy easily, reduce display device's yield.
The invention provides a display module attaching method, which comprises the following steps: the display module comprises a pre-bending display module base body, wherein a stress adjusting layer is arranged on one side of the display module base body, which is far away from a bearing surface of a pre-bending jig; stripping the stress adjusting layer with at least partial thickness to form a display module; and the display module is attached to the curved cover plate. According to the display module attaching method, the stress adjusting layer is used for adjusting the neutral layer of the display module matrix in the pre-bending process, so that the flexible screen body is protected, and the attaching yield is improved.
Fig. 2a to fig. 2d are schematic diagrams of a bonding method according to an embodiment of the present disclosure, and the bonding method of the present disclosure is described with reference to fig. 2a to fig. 2 d. Fig. 2a is a schematic diagram showing a state before pre-bending of the display module substrate, fig. 2b is a schematic diagram showing a state before pre-bending of the display module substrate, fig. 2c is a schematic diagram showing a state after pre-bending of the display module substrate, and fig. 2d is a schematic diagram showing a state after peeling of the stress adjustment layer.
It can be understood that the pre-bending jig 400 has an arc-shaped bearing surface 410 for bearing the display module base 200, the middle of the bearing surface 410 of the pre-bending jig 400 is a plane, and the edge is an arc surface, so as to adapt to the characteristics that the middle of the cover plate is a plane, and the edge is a curved surface, that is, the cover plate is the curved surface cover plate 100, so when the display module is attached to the curved surface cover plate 100, the attachment of the middle plane part can be firstly completed, then the attachment of the curved surface part is performed, and the attachment of the curved surface part from the plane to the curved surface can avoid the. When the display module base 200 is placed on the pre-bending jig 400, the display module base 200 is attached to the pre-bending jig 400 along with the shape, that is, the display module is pre-bent in the process, so that an arc shape close to the bearing surface 410 of the pre-bending jig 400 is formed. It can be understood that the bending amount of the display module base 200 corresponding to the arc surface portion of the bearing surface 410 of the pre-bending jig 400 is even larger than the bending amount of the final display module when the display module is attached to the curved cover plate 100, and therefore, a stress adjustment layer is introduced.
The display module base 200 includes a flexible screen 210 and a stress adjustment layer 220, the flexible screen 210 has a structure consistent with that of the conventional flexible screen 210, and includes a stacked substrate, a light emitting layer, and an encapsulation layer (not shown in the figure, a film layer structure is shown), and the light emitting layer is located between the substrate and the encapsulation layer. The flexible screen body 210 is directly attached to the curved-surface cover plate 100 in the prior art, and the inventor researches and discovers that the low yield of the existing attaching method is caused by the fact that the flexible screen body 210 is large in bending amount in the pre-bending process, and the neutral layer of the flexible screen body 210 is located on one side, close to the substrate, of the packaging layer in the pre-bending process, namely the packaging layer is easily damaged by tensile force in the pre-bending process, and the yield of the display device is further influenced. And this application has set up stress adjustment layer 220 on flexible screen body 210 surface, and the one side that deviates from the basement at the encapsulation layer has also set up stress adjustment layer 220, adjusts flexible screen body 210 neutral plane at the in-process of preflex at least, and then preflex display module assembly base member 200 for display module assembly base member 200 laminates in-process stress adjustment layer 220 produces the guard action to flexible screen body 210 on preflex tool 400.
The stress adjustment layer 220 with at least partial thickness is peeled off to form the display module, that is, after the pre-bending display module substrate to the display module substrate 200 are attached to the pre-bending jig 400, the stress adjustment layer 220 is partially peeled off or completely peeled off before the display module is attached to the curved cover plate 100. The stress adjustment layer 220 is disposed on a side of the display module facing away from the carrying surface 410 of the pre-bending fixture 400, so that the stress adjustment layer 220 can be easily peeled off after the pre-bending process. Stress adjustment layer 220 can be after the preflex partially or peel off completely to can enough adjust the position on display module assembly base member 200 neutral layer at the in-process of preflex, protect flexible screen body 210, simultaneously, get rid of stress adjustment layer 220 before display module assembly and apron laminating, avoid new rete to lead to causing the thickening of display device rete in introducing the display device structure.
When the stress adjustment layer 220 is completely peeled off, the need of performing secondary design on the optical performance and the like of the display device again due to the newly introduced film layer can be avoided, and the design difficulty is simplified. When peeling off stress adjustment layer 220 completely before display module assembly and the laminating of curved surface apron 100, do not introduce new rete in display device in other words, display module assembly this moment is also the flexible screen body 210, consequently neither increase display device thickness, also need not redesign final display device's that forms optical characteristic etc. again, only need follow neutral layer angle of regulation, design stress adjustment layer 220 in a flexible way, and, after display module assembly and the laminating of curved surface apron 100, can understand still including the bonding glue film layer between display module assembly and curved surface apron 100, OCA optical cement if commonly used, so apron and OCA optical cement have played the function of stress adjustment layer 220 in display device.
Similarly, when the stress adjustment layer 220 with partial thickness is peeled off, the stress adjustment layer 220 with partial thickness and the flexible screen body 210 which are left jointly form a display module, and when the display module is attached to the curved cover plate 100, the stress adjustment layer 220 still keeps the function of stress adjustment after pre-bending, and meanwhile, the display module is prevented from being attached to the curved cover plate 100 and the thickness of the display device is too thick. When the thickness stress adjustment layer 220 is peeled off, it is only necessary to reduce the thickness of the remaining stress adjustment layer 220 without changing the dimension in the width or length direction, where the thickness direction refers to the stacking direction of the flexible screen 210 and the stress adjustment layer 220. It can be understood that the stress adjustment layer 220 is introduced such that during the pre-bending process, the film layer with poor bending performance, such as the inorganic layer of the encapsulation layer, is adjusted to be near the neutral layer, and after the stress adjustment layer 220 is removed after the pre-bending process, the neutral layer of the display device is again deviated from the inorganic layer of the encapsulation layer, and when the neutral layer is re-established after the attachment with the curved cover plate 100, the neutral layer with a partial thickness can be retained as required, so that the neutral layer of the encapsulation layer is still located near the inorganic layer of the encapsulation layer of the display device after the attachment of the cover plate. After pre-bending, the display module is damaged, and particularly, if the stress applied to the encapsulation layer is much smaller than that in the pre-bending process, that is, the pre-bending process is the most important link for causing damage to the screen body, so that the stress adjustment layer 220 can be partially or completely peeled off after pre-bending. The thickness of the stress adjusting layer which is not stripped can be set according to actual requirements.
The display module is attached to the curved cover plate after the stress adjusting layer with at least partial thickness is peeled off, it can be understood that when the stress adjusting layer 220 is completely peeled off, the display module is attached to the curved cover plate 100 at the moment, that is, the flexible screen body 210 is attached to the curved cover plate 100, and when the stress adjusting layer 220 with partial thickness is peeled off, the attached display module and the curved cover plate 100 are understood that the display module formed by the residual stress adjusting layer 220 and the flexible screen body 210 which are not peeled off are attached to the curved cover plate 100 together to form the final display device.
When the display module base 200 is pre-bent, a certain clamping assembly is needed to drive the display module base 200 to move and adjust the shape of the display module base 200, so that the display module base 200 is adapted to the shape of the pre-bending jig 400. The back side of the flexible screen body usually comprises film layers such as a support film, that is, one side of the substrate, which is away from the light emitting layer, comprises the support film for supporting and protecting the flexible screen body, so that the size of the support film can be designed to be larger than the final size of the flexible screen body required by the display device, that is, a clamping space is reserved in the support film, and the redundant support film can be removed after the display module is attached to the curved cover plate. A new film layer for guiding the pre-bending of the display module base 200 may also be introduced, for example, before the pre-bending of the display module base 200, the display module base 200 is disposed on the guide film 300, and then the guide film 300 is controlled to make the display module base 200 fit onto the carrying surface 410 of the pre-bending jig 400, as shown in fig. 2b and 2c, the guide film 300 drives the display module base 200 to bend during the pre-bending process, and certainly, all the display module bases 200 may be selected to fit onto the pre-bending jig 400 according to actual needs, that is, all the guide films covered by the display module base 200 are attached onto the carrying surface, and also, the bending degree of the display module base 200 may be reduced under the condition that the display module and the curved cover plate fit from a plane to a curved surface according to needs, but the display module base 200 is inevitably bent during the pre-bending process, and the use of the guide film 300 makes no direct contact between the display module and the clamping assembly, can play the effect of protection display module assembly. The pre-bending jig 400 is also used to attach the display module to the curved cover plate 100 to form the display device.
The flexible screen body of this embodiment takes the flexible screen body of OLED as an example, and display module assembly base member 200 includes flexible screen body 210 and stress adjustment layer 220, and flexible screen body 210 includes conventional structure retes such as the base, OLED luminescent layer, the encapsulation layer of range upon range of setting, and the base includes the drive rete, specifically can be thin film transistor drive layer. The inventor researches and discovers that when the display module adopts a thin film packaging structure, namely the packaging layer is a structure formed by overlapping inorganic layers and organic layers, the neutral surface of the display module is positioned outside the packaging layer and below the packaging layer, namely the neutral layer is positioned on one side of the packaging layer close to the substrate, and the packaging layer is subjected to tensile force in the pre-bending process. The packaging layer comprises an inorganic layer for good packaging effect, the inorganic layer has poor bending performance and can break under the action of tensile force, and then the packaging effect and the product yield are influenced. Based on this, the inventors have found that the yield of the display device can be improved by disposing the encapsulation layer on or near the neutral plane, and in order to make the encapsulation layer move upward, the stress adjustment layer 220 is disposed on the flexible screen 210, so that the neutral layer of the display module substrate 200 moves upward, and the encapsulation layer is located on or near the neutral plane of the display module substrate 200. When the neutral surface is not located in the packaging layer, the neutral layer is preferably located on the packaging layer compared with the neutral layer located below the packaging layer, namely the neutral layer is preferably located on one side, away from the substrate, of the packaging layer, so that the packaging layer is subjected to compressive stress in the pre-bending process, and the damage of the packaging layer in the compressive stress state is smaller than that of tensile stress. Because the stress adjusting layer 220 is arranged on the flexible screen body 210, the neutral layer of the flexible screen body 210 moves upwards, the packaging layer is subjected to weak tensile force, or is not subjected to stress, or is subjected to compressive stress, and the property of the stress adjusting layer 220 can be adjusted according to the actual product requirement under the specific stress condition.
The flexible screen body 210 is provided with a first neutral layer, the display module base body 200 is provided with a second neutral layer, the first neutral layer is positioned below the packaging layer, the stress adjusting layer 220 positioned on one side, deviating from the pre-bending jig 400 bearing surface 410, of the display module base body 200 can enable the neutral layer of the flexible screen body 210 to move upwards, the second neutral layer is positioned in the packaging layer or above the packaging layer, the packaging layer can be guaranteed not to be stressed or stressed, the packaging layer is prevented from being damaged, and the yield of the display device is improved.
Furthermore, the encapsulation layer comprises a first inorganic layer, an organic layer and a second inorganic layer which are sequentially stacked, and the second inorganic layer is positioned on one side of the organic layer, which is far away from the substrate. The second neutral layer is located in the second inorganic layer or on the side of the second inorganic layer facing away from the substrate. It can be understood that, in the prior art, the second inorganic layer has a higher risk of damage than the first inorganic layer, so the stress adjustment layer 220 is utilized to adjust the second neutral layer into the second inorganic layer or to adjust the second inorganic layer to the side away from the substrate, so as to significantly improve the yield of the display device.
When the stress adjusting layer 220 is disposed on the flexible screen 210, the actual position of the neutral layer of the display module base 200 can be adjusted by adjusting the material and thickness of the stress adjusting layer 220, the thickness of the stress adjusting layer 220 is inversely related to the young modulus of the material, on the premise of maintaining the position of the neutral layer to be constant, if the selected material has a large young modulus, the thickness of the film layer can be properly reduced, or if the young peel is smaller, the thickness is increased, the combined effect of the two should be achieved to integrally move the neutral layer of the display module base 200 upwards to the position in the packaging layer or even above the packaging layer, so as to ensure that the packaging layer is not stressed or is stressed properly. The specific base material, thickness and position of the display module can be selected according to actual needs.
As can be seen from the foregoing, in the pre-bending process, the supporting surface 410 is an arc-shaped surface, that is, the display module base 200 forms an arc-shaped appearance after pre-bending, the corresponding stress adjustment layer 220 includes a planar area and an area to be bent, and the pre-bent stress adjustment layer 220 forms a bending area corresponding to the arc-shaped surface of the pre-bending jig 400. The stress adjusting layer 220 has a planar area and an area to be bent, and when the stress adjusting layer 220 is arranged, the thickness of the area to be bent is set to be larger than that of the planar area, so that the requirements of different pre-bending degrees of the planar area and the area to be bent are met, and the flexible screen body 210 is fully protected.
The stress adjustment layer 220 may include a plurality of sub-layers, and specifically, in an embodiment, the stress adjustment layer 220 includes a first sub-layer and a second sub-layer, and the first sub-layer is located on a side of the second sub-layer away from the pre-bending jig 400; the step of peeling off at least a portion of the thickness of the stress adjustment layer 220 to form the display module includes peeling off the first sub-layer, and then the second sub-layer and the flexible screen 210 together form the display module. By providing the stress adjustment layer 220 to include at least two sublayers, removal of a portion of the thickness can be easily achieved, and the thickness for peeling can be flexibly set.
The first sublayer and the second sublayer may be made of the same material or different materials. The second sublayer can be a newly introduced film layer, and can also be a film layer required when the display module assembly is attached to the curved cover plate 100, if the second sublayer is made of liquid optical cement, the second sublayer serves as the stress adjusting layer 220 in the pre-bending process, and serves as an attachment bonding layer when the display module assembly is attached to the curved cover plate 100, so that liquid optical cement does not need to be coated again, and the process is simplified.
The stress adjustment layer 220 may be a liquid optical glue material. When the thickness of the bending region of the stress adjusting layer 220 is larger than the thickness of the plane region, the liquid optical cement is preferably selected as the material of the stress adjusting layer 220, the liquid optical cement can form a film structure with different thicknesses through simple coating and curing, and the process is simple and flexible.
In one embodiment, the stress adjustment layer 220 includes a body layer 221 and a bonding layer 222. The adhesive layer 222 has a characteristic of changing viscosity in response to an environmental parameter, for example, the adhesive layer 222 has UV debonding property, that is, the material of the adhesive layer 222 is UV debonding adhesive, and before the stress adjustment layer 220 is peeled off at least a part of the thickness to form the display module, the peeling off of the stress adjustment layer 220 is further performed by using UV light to debond the adhesive layer 222. Of course, the adhesive layer 222 may also have different adhesion properties in response to temperature and pressure, and the material of the body layer 221 of the stress adjustment layer 220 may be any one of PET, PI, and the like, and the specific material may be selected according to actual needs.
In one embodiment, the step of applying the liquid optical adhesive on the surface of the display module after the step of peeling off the stress adjustment layer 220 with at least a partial thickness includes adhering the display module to the curved cover plate 100 by using the liquid optical adhesive. The stress adjustment layer 220 may not be limited to the liquid optical adhesive, and the adhesive for bonding the curved cover plate 100 and the display module may be applied after the stress adjustment layer 220 is peeled off. Alternatively, the liquid optical cement may be applied after the stress adjustment layer 220 is partially or completely peeled off according to the thickness requirement to adjust the thickness of the display module.
On the other hand, the invention also provides a display device which is manufactured by adopting the manufacturing method of the display module provided by any one of the embodiments. Because of the display module assembly in-process of laminating, utilize stress adjustment layer adjustment display module assembly base member neutral layer position, also adjust near the encapsulation layer with flexible screen body neutral layer, preferably adjust to in the encapsulation layer or encapsulation layer deviates from basement one side, and then avoid among the prior art if the neutral layer skew encapsulation layer and the encapsulation layer that causes receive the problem of tensile stress damage, improve display device yield.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A display module attaching method is characterized by comprising the following steps:
the display module comprises a pre-bending display module base body, wherein a stress adjusting layer is arranged on one side of the display module base body, which is far away from a bearing surface of a pre-bending jig;
stripping the stress adjusting layer with at least partial thickness to form a display module;
and the display module is attached to the curved cover plate.
2. The attaching method according to claim 1, further comprising disposing the display module substrate on a guide film before pre-bending;
the pre-curved display module base member includes: and controlling the guide film to enable the display module matrix to be attached to the bearing surface of the pre-bending jig along with the shape.
3. The attaching method according to claim 1, wherein the display module base body comprises a flexible screen body and a stress adjustment layer, the flexible screen body comprises a substrate, a light emitting layer and an encapsulation layer which are sequentially stacked, the flexible screen body is provided with a first neutral layer, the display module base body is provided with a second neutral layer, the first neutral layer is located on one side, close to the substrate, of the encapsulation layer, and the second neutral layer is located in the encapsulation layer or on one side, away from the substrate, of the encapsulation layer.
4. The bonding method according to claim 1, wherein the stress adjustment layer thickness is inversely related to the stress adjustment layer Young's modulus.
5. The attaching method according to claim 1, wherein the stress adjustment layer includes a planar area and an area to be bent, and a thickness of the area to be bent is larger than a thickness of the planar area.
6. The attaching method according to claim 1, wherein the stress adjusting layer includes a first sub-layer and a second sub-layer, and the first sub-layer is located on a side of the second sub-layer facing away from the pre-bending jig;
and the step of stripping the stress adjusting layer with at least partial thickness to form the display module comprises the step of stripping the first sublayer to form the display module.
7. The attaching method according to claim 6, wherein the material of the second sub-layer is a liquid optical adhesive.
8. The attaching method according to claim 1, wherein the stress adjustment layer includes a body layer and an adhesive layer, and the adhesive layer is made of a UV debonding adhesive;
the step of stripping at least part of the thickness of the stress adjusting layer before forming the display module further comprises utilizing UV light to decompose and adhere the bonding layer.
9. The attaching method according to claim 1, further comprising applying a liquid optical adhesive on a surface of the display module after the peeling of the stress adjustment layer having at least a partial thickness.
10. A display device prepared by the method for attaching a display module according to any one of claims 1 to 9.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113314693A (en) * | 2021-07-30 | 2021-08-27 | 深圳小米通讯技术有限公司 | Assembling method and laminating equipment for curved surface display screen |
| CN114220341A (en) * | 2021-12-22 | 2022-03-22 | 业成科技（成都）有限公司 | Curved surface display screen, laminating method and display device |
| CN114801150A (en) * | 2022-05-13 | 2022-07-29 | 业泓科技(成都)有限公司 | Three-dimensional laminating forming device and method |
| CN114863825A (en) * | 2022-06-14 | 2022-08-05 | Oppo广东移动通信有限公司 | Attaching method of dominant screen assembly, dominant screen assembly and electronic equipment |
| CN115294866A (en) * | 2022-08-01 | 2022-11-04 | 厦门天马显示科技有限公司 | Composite adhesive tape, shaping method thereof, display panel and display device |
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| CN114220341A (en) * | 2021-12-22 | 2022-03-22 | 业成科技（成都）有限公司 | Curved surface display screen, laminating method and display device |
| CN114220341B (en) * | 2021-12-22 | 2023-11-07 | 业成科技（成都）有限公司 | Curved surface display screen, attaching method and display device |
| CN114801150A (en) * | 2022-05-13 | 2022-07-29 | 业泓科技(成都)有限公司 | Three-dimensional laminating forming device and method |
| CN114863825A (en) * | 2022-06-14 | 2022-08-05 | Oppo广东移动通信有限公司 | Attaching method of dominant screen assembly, dominant screen assembly and electronic equipment |
| CN114863825B (en) * | 2022-06-14 | 2024-02-27 | Oppo广东移动通信有限公司 | Attaching method of dominant screen assembly, dominant screen assembly and electronic equipment |
| CN115294866A (en) * | 2022-08-01 | 2022-11-04 | 厦门天马显示科技有限公司 | Composite adhesive tape, shaping method thereof, display panel and display device |
| CN115294866B (en) * | 2022-08-01 | 2024-01-02 | 厦门天马显示科技有限公司 | Composite adhesive tape, molding method thereof, display panel and display device |
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