Display panel, display panel laminating method, laminating jig and display device

Abstract

The invention discloses a display panel, a display panel attaching method, an attaching jig and a display device.The display panel comprises a plane area and a curved surface area which are adjacent, and the display panel comprises a display module which comprises a light emitting face; the adhesive layer covers the light emitting surface of the display module, the adhesive layer comprises a first adhesive part arranged in the curved surface area, and the thickness of the first adhesive part is not uniform; the cover plate is arranged on the side, away from the display module, of the adhesive layer, and the curvature of the display module located in the curved surface area is smaller than that of the cover plate located in the curved surface area. The thickness of the first bonding part arranged in the curved surface area is non-uniform, so that the curvature of the display module located in the curved surface area is smaller than that of the cover plate located in the curved surface area, the bending radius of the display module located in the curved surface area is increased, the bending depth of the display module located in the curved surface area is reduced, the fold redundancy of the display module located in the curved surface area can be slowed down, and the display effect of the display module is improved. Bubbles are reduced, the display area is increased, and the use performance of the display panel is improved.

Description

Technical Field

[0001] The present application belongs to the field of touch control technology, and in particular, relates to a display panel, a display panel bonding method, a bonding fixture, and a display device. Background Art

[0002] Organic Light Emitting Diode (OLED) and flat panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

[0003] However, the performance of current OLED display products needs to be improved.

[0004] Therefore, there is an urgent need for a new display panel, a display panel bonding method, a bonding fixture and a display device. Summary of the invention

[0005] The embodiments of the present application provide a display panel, a display panel bonding method, a bonding jig and a display device, wherein the thickness of the first bonding portion provided in the curved area is unevenly set to correspondingly adjust the curvature of the display module located in the curved area, so that the curvature of the display module located in the curved area is smaller than the curvature of the cover plate located in the curved area, the bending radius of the display module located in the curved area is increased, and the bending depth of the display module in the curved area is reduced, which can reduce the redundancy of wrinkles of the display module in the curved area, reduce bubbles, increase the display area, and improve the performance of the display panel.

[0006] On the one hand, an embodiment of the present application provides a display panel, which includes adjacent flat areas and curved areas, and the display panel includes: a display module, the display module includes a light-emitting surface; an adhesive layer, the adhesive layer covers the light-emitting surface of the display module, the adhesive layer includes a first adhesive portion arranged in the curved area, and the thickness of the first adhesive portion is unevenly arranged; a cover plate, arranged on a side of the adhesive layer away from the display module; wherein the curvature of the display module located in the curved area is smaller than the curvature of the cover plate located in the curved area.

[0007] According to one aspect of the present application, the first adhesive portion includes a middle portion and edge portions arranged on both sides of the middle portion along a direction perpendicular to the thickness direction of the display panel, and the thickness of the middle portion is greater than the thickness of the edge portion.

[0008] According to one aspect of the present application, the adhesive layer further includes a second adhesive portion disposed in the plane area, and the thickness of the second adhesive portion is set equal.

[0009] According to one aspect of the present application, the curved surface area includes an arc-angle curved surface area and an edge curved surface area connected to the arc-angle curved surface area, and the arc-angle curved surface area and the edge curved surface area are alternately arranged along the circumference of the display panel; the curvature of the display module located in the arc-angle curved surface area is smaller than the curvature of the cover plate located in the arc-angle curved surface area; optionally, the curved surface area includes four arc-angle curved surface areas; optionally, the curvature of the display module located in the edge curved surface area is smaller than the curvature of the cover plate located in the edge curved surface area.

[0010] On the other hand, an embodiment of the present application provides a display panel bonding method, wherein the display panel includes adjacent flat areas and curved areas, and the display panel bonding method includes the following steps: providing a display module, an adhesive layer and a cover plate, wherein the adhesive layer covers the light emitting surface of the display module, the cover plate is connected to the adhesive layer located in the flat area, and a reserved space is provided between the cover plate and the adhesive layer located in the curved area; providing a bonding jig, and coating a lubricating layer on the bonding surface of the bonding jig; abutting one side of the bonding surface of the bonding jig against the side of the display module away from the cover plate, and applying an extrusion force so that the bonding jig slides relative to the display module in a direction from the flat area to the curved area, and the adhesive layer is deformed in the reserved space under the extrusion of the bonding jig to form a first bonding portion with uneven thickness in the curved area, so that the curvature of the display module in the curved area is smaller than the curvature of the cover plate located in the curved area.

[0011] According to another aspect of the present application, the friction coefficient between the bonding surface of the bonding fixture and the display module is greater than or equal to 0.2 and less than or equal to 0.5; optionally, the material of the lubricating layer includes one of silicone beads or silicone oil.

[0012] According to another aspect of the present application, in the step of providing a bonding jig: the bonding jig includes a first surface, a second surface and a first side surface connecting the first surface and the second surface, the first surface includes a first plane and a first curved surface connected to each other, the first curved surface and the first side surface are connected, and the first side surface includes an inner concave portion that is concave inward in a direction parallel to the first plane; in the step of contacting one side of the bonding surface of the bonding jig against the side of the display module facing away from the cover plate: the bonding jig is subjected to a reaction force from the display module so that the inner concave depth of the inner concave portion increases; optionally, the inner concave portion includes a curved surface structure; optionally, the inner concave portion is an arc surface structure.

[0013] According to another aspect of the present application, the fitting jig is a contoured jig; optionally, the material of the contoured jig includes a silicone material; optionally, along a direction perpendicular to the first plane, the distance between the first curved surface and the second surface is smaller than the distance between the first plane and the second surface.

[0014] Another aspect of an embodiment of the present application provides a bonding jig for use in the display panel bonding method in any of the above embodiments, the bonding jig comprising: a first surface, a second surface and a first side surface connecting the first surface and the second surface relative to each other, the first surface comprising a first plane and a first curved surface connected to each other, the first curved surface and the first side surface being connected, and the first side surface comprising a concave portion that is concave inward in a direction parallel to the first plane.

[0015] Another aspect of the embodiments of the present application provides a display device, comprising the display panel in any of the above embodiments.

[0016] Compared with the prior art, the display panel provided in the embodiment of the present invention includes a display module, an adhesive layer and a cover plate. The thickness of the first adhesive portion provided in the curved area is unevenly set to correspondingly adjust the curvature of the display module located in the curved area, so that the curvature of the display module located in the curved area is smaller than the curvature of the cover plate located in the curved area, thereby increasing the bending radius of the display module located in the curved area, and reducing the bending depth of the display module in the curved area. This can reduce the redundancy of wrinkles in the display module in the curved area, reduce bubbles, increase the display area, and improve the performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0019] Figure 2 An embodiment provides Figure 1 The film structure diagram at the middle BB;

[0020] Figure 3 is a flow chart of a display panel bonding method provided by an embodiment of the present invention;

[0021] Figure 4 is a cross-sectional schematic diagram of a structure obtained in step S110 in a display panel bonding method provided by an embodiment of the present invention;

[0022] Figure 5 is a cross-sectional schematic diagram of a structure obtained in step S120 in a display panel bonding method provided by an embodiment of the present invention;

[0023] Figure 6 is a cross-sectional schematic diagram of a structure obtained in step S130 in a display panel bonding method provided by an embodiment of the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of a bonding fixture provided by an embodiment of the present invention.

[0025] In the attached figure:

[0026] 1-display module; 2-adhesive layer; 21-first adhesive part; 22-second adhesive part; 3-cover plate; 4-fitting fixture; K-reserved space; P1-first surface; P11-first plane; P12-first curved surface; P2-second surface; C1-first side surface; H-recessed part; PA-plane area; QA-curved area; BA-arc-angle curved area; ZA-edge curved area. DETAILED DESCRIPTION

[0027] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0029] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0030] It is obvious to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover modifications and changes of the present application that fall within the scope of the corresponding claims (technical solutions for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0031] The embodiments of the present application provide a display panel, a display panel bonding method, a bonding fixture and a display device. Figures 1 to 7 Various embodiments of a display panel, a display panel laminating method, a laminating jig, and a display device are described.

[0032] See also Figure 1 to Figure 2 A display panel provided in an embodiment of the present application includes adjacent flat area PA and curved area QA, and the display panel includes: a display module 1, the display module 1 includes a light emitting surface; an adhesive layer 2, the adhesive layer 2 covers the light emitting surface of the display module 1, the adhesive layer 2 includes a first adhesive portion 21 arranged in the curved area QA, and the thickness of the first adhesive portion 21 is unevenly arranged; a cover plate 3, arranged on a side of the adhesive layer 2 away from the display module 1; wherein the curvature of the display module 1 located in the curved area QA is smaller than the curvature of the cover plate 3 located in the curved area QA.

[0033] The display panel provided by the embodiment of the present invention includes a display module 1, an adhesive layer 2 and a cover plate 3. The thickness of the first adhesive portion 21 provided in the curved area QA is unevenly set to correspondingly adjust the curvature of the display module 1 located in the curved area QA, so that the curvature of the display module 1 located in the curved area QA is smaller than the curvature of the cover plate 3 located in the curved area QA, and the bending radius of the display module 1 located in the curved area QA is increased, and the bending depth of the display module 1 in the curved area QA is reduced, which can reduce the redundancy of wrinkles of the display module 1 in the curved area QA, reduce bubbles, increase the display area, and improve the performance of the display panel.

[0034] In this embodiment, the display module 1 can be an organic light-emitting diode (OLED) display module 1, a quantum dot light-emitting diode (QLED) or a micro flat display module 1 (Micro-OLED or Micro-LED).

[0035] Optionally, the adhesive layer 2 can be made of OCA (Optically Clear Adhesive). OCA glue is made of optical acrylic glue as a base material, and then a layer of release film is adhered to the upper and lower base layers to obtain a double-sided laminating tape without a base material. The thickness of the OCA adhesive layer is uniform and the flatness is high; the adhesion is high and the bonding strength after lamination is large.

[0036] In this embodiment, the bonding method can be adjusted to form a first adhesive portion 21 with uneven thickness, and the thickness of the first adhesive portion 21 will affect the curvature of the display module 1 in the curved area QA. By adjusting the thickness change of the first adhesive portion 21, the curvature of the display module 1 located in the curved area QA can be made smaller than the curvature of the cover plate 3 located in the curved area QA.

[0037] The curved area QA may correspond to the edge position of the display panel, for example, the four corners of the display panel, so as to reduce the redundancy of wrinkles at the four corners and increase the display area.

[0038] Considering that the curvature of the display module 1 located in the arc-angle curved surface area BA is more easily squeezed by the adhesive cover plate 3, wrinkles, bubbles and other defects may occur in the arc-angle curved surface area BA of the display module 1, affecting the display effect.

[0039] In order to avoid the above problems, in some optional embodiments, the curved surface area QA includes an arc-angle curved surface area BA and an edge curved surface area ZA connected to the arc-angle curved surface area BA, and the arc-angle curved surface area BA and the edge curved surface area ZA are alternately arranged along the circumference of the display panel; the curvature of the display module 1 located in the arc-angle curved surface area BA is smaller than the curvature of the adhesive cover plate 3 located in the arc-angle curved surface area BA.

[0040] By limiting the curvature of the display module 1 located in the arc-angle curved surface area BA to be smaller than the curvature of the adhesive cover plate 3 located in the arc-angle curved surface area BA, the bending angle of the display module 1 is adjusted, and the bending radius of the display module 1 located in the arc-angle curved surface area BA is increased. The bending depth of the display module 11 in the arc-angle curved surface area BA is reduced, the stress on the display module 11 in the arc-angle curved surface area BA is reduced, and the wrinkle and bubble problem of the display module 11 in the arc-angle curved surface area BA is improved.

[0041] In this embodiment, the specific number and arrangement form of the arc angle curved surface area BA and the edge curved surface area ZA can be selected according to the actual shape of the display panel. For example, four arc angle curved surface areas BA and four corresponding edge curved surface areas ZA extending in straight lines can be arranged to form a four-curved display panel. The stress on the display module 11 at the four corners, i.e., the four arc angle curved surface areas BA, is reduced, and the wrinkle bubble problem at the four corners of the display module 11 is improved.

[0042] Optionally, the display panel may also adopt a hyperbolic display panel, that is, only the two opposite sides of the display panel are correspondingly curved, and the other parts are not curved. In the two opposite curved areas QA of the hyperbolic display panel, the curvature of the display module 1 is smaller than the curvature of the adhesive cover plate 3, so as to avoid wrinkles, bubbles and other defects in the display module 1 in the two curved areas QA of the hyperbolic display panel.

[0043] Optionally, the curvature of the display module 1 located in the edge curved area ZA is smaller than the curvature of the adhesive cover plate 3 located in the edge curved area ZA, thereby reducing the stress on the display module 11 in the edge curved area ZA and improving the wrinkle and bubble problem of the display module 11 in the edge curved area ZA.

[0044] It can be understood that the cover plate 3 is a film layer made of materials such as glass with high light transmittance, which plays a role in protecting the display panel. Specifically, the cover plate 3 can be made of flexible materials so that the cover plate 3 can be folded, so that it can be applied to a flexible and foldable display module 1. Specifically, the cover plate 3 can be made of transparent, soft, and foldable materials such as UTG (Ultra Thin Glass), CPI (Colorless Polyimide), and PET (Polyethylene Terephthalate) to achieve the bendability and foldability of the cover plate 3, which is convenient for application in a foldable display panel.

[0045] In some optional embodiments, the first adhesive portion 21 includes a middle portion and edge portions provided on both sides of the middle portion along a direction perpendicular to the thickness direction of the display panel, and the thickness of the middle portion is greater than that of the edge portion.

[0046] Through research and experiments, the inventors found that when the thickness of the middle portion located in the middle is greater than the thickness of the edge portions located on both sides, that is, when the first adhesive portion 21 is thick in the middle and thin on both sides, the bending radius of the display module 1 attached to the side of the first adhesive portion 21 away from the cover plate 3 can be effectively increased, so that the curvature of the display module 1 located in the curved area QA is smaller than the curvature of the cover plate 3 located in the curved area QA, thereby reducing the compressive stress on the display module 1 located in the curved area QA, thereby achieving the effect of reducing wrinkles and bubbles.

[0047] Optionally, the adhesive layer 2 also includes a second adhesive portion 22 provided in the plane area PA. The thickness of the second adhesive portion 22 is set to be equal, that is, the second adhesive portion 22 is set to be uniformly thick to ensure the flatness of the display panel in the plane area PA. The display panel located in the plane area PA can be smoothly bonded to the second adhesive portion 22 to ensure the display effect of the plane area PA.

[0048] The second adhesive portion 22 and the first adhesive portion 21 may be an integrated structure, and the only difference between the two is the thickness, and the materials are the same, so as to facilitate preparation and reduce production costs.

[0049] See also Figure 3 The embodiment of the present invention further provides a display panel bonding method, wherein the display panel includes adjacent flat surface areas PA and curved surface areas QA, and the display panel bonding method includes the following steps:

[0050] S110: providing a display module 1, an adhesive layer 2 and a cover plate 3, wherein the adhesive layer 2 covers the light emitting surface of the display module 1, the cover plate 3 is connected to the adhesive layer 2 located in the plane area PA, and a reserved space K is provided between the cover plate 3 and the adhesive layer 2 located in the curved area QA, such as Figure 4 As shown;

[0051] S120: providing a laminating jig 4, and coating a lubricating layer on the laminating surface of the laminating jig 4, such as Figure 5 As shown;

[0052] S130: A bonding surface of the bonding jig 4 is placed against the side of the display module 1 facing away from the cover plate 3, and a pressing force is applied to make the bonding jig 4 slide relative to the display module 1 in the direction from the flat area PA to the curved area QA. The adhesive layer 2 is deformed in the reserved space K under the pressing of the bonding jig 4 to form a first bonding portion 21 with uneven thickness in the curved area QA, so that the curvature of the display module 1 in the curved area QA is smaller than the curvature of the cover plate 3 located in the curved area QA. Figure 6 shown.

[0053] The display panel bonding method provided by the embodiment of the present invention reduces the friction between the bonding jig 4 and the display module 1 by coating a lubricating layer on the bonding surface of the bonding jig 4, so that the bonding jig 4 slides relative to the display module 1, and the adhesive layer 2 of the curved area QA and the cover plate 3 are bonded by the sliding of the bonding jig 4. When the bonding jig 4 is bonded upward, the adhesive layer 2 of the flat area PA is squeezed by the bonding jig 4 to flow and deform toward the curved area QA, and the curved area QA is bonded by the deformation extrusion pressure of the bonding jig 4 and the sliding of the bonding jig 4, so that the deformation of the adhesive layer 2 of the curved area QA is uneven, which can achieve the effect of reducing the curvature of the display module 1 in the curved area QA (increasing the radius), reducing the bending depth of the display module 1 in the curved area QA, slowing down the redundancy of wrinkles of the display module 1 in the curved area QA, reducing bubbles, increasing the display area, and improving the performance of the display panel.

[0054] In step S110, the cover plate 3 and the adhesive layer 2 of the flat area PA can be bonded first, while the adhesive layer 2 and the cover plate 3 of the curved area QA are not bonded, that is, there is a reserved space K between the two, which is a flow-out space for the subsequent deformation of the adhesive layer 2. At the same time, setting the reserved space K can also prevent the display module 1 of the curved area QA from being connected to the cover plate 3 through the adhesive layer 2 in advance.

[0055] In step S120 , the material of the lubricating layer includes one of silicone beads or silicone oil, as long as the friction coefficient between the laminating surface of the laminating fixture 4 and the display module 1 can meet the requirement.

[0056] In step S130, when the bonding jig 4 moves toward the inner side of the cover plate 3 for bonding, the dynamic friction coefficient (μ) decreases, and the corresponding friction force F=μ*N decreases relatively. When the friction coefficient is extremely small, the friction force F=0. At this time, the bonding jig 4 slides relative to the display module 1, and the adhesive layer 2 of the curved area QA and the cover plate 3 are bonded by the deformation extrusion pressure of the bonding jig 4 and the sliding of the bonding jig 4.

[0057] In some optional embodiments, the friction coefficient between the bonding surface of the bonding jig 4 and the display module 1 is greater than or equal to 0.2 and less than or equal to 0.5. The lubricating layer can be provided to reduce the friction coefficient between the bonding surface of the bonding jig 4 and the display module 1, thereby facilitating the sliding of the bonding jig 4 relative to the display module 1 in the direction from the plane area PA to the curved surface area QA. The sliding direction can be Figure 6 Middle X direction.

[0058] Optionally, the friction coefficient between the bonding surface of the bonding jig 4 and the display module 1 is equal to any one of 0.2, 0.3, 0.4, and 0.5. For example, when the lubricating layer is not applied, the friction coefficient between the bonding surface of the bonding jig 4 and the display module 1 is equal to 0.6. After the lubricating layer is applied, the friction coefficient between the bonding surface of the bonding jig 4 and the display module 1 is equal to 0.2, so that the bonding jig 4 can slide relative to the display module 1, and the adhesive layer 2 of the curved surface area QA and the cover plate 3 are bonded by the deformation extrusion force of the bonding jig 4 and the sliding of the bonding jig 4.

[0059] In some optional embodiments, in the step of providing a bonding jig 4: the bonding jig 4 includes a first surface P1 and a second surface P2 relative to each other, and a first side surface C1 connecting the first surface P1 and the second surface P2, the first surface P1 includes a first plane P11 and a first curved surface P12 connected to each other, the first curved surface P12 is connected to the first side surface C1, and the first side surface C1 includes an inner recess H which is concave inward in a direction parallel to the first plane P11; in the step of contacting one side of the bonding surface of the bonding jig 4 against the side of the display module 1 away from the cover plate 3: the bonding jig 4 is subjected to a reaction force from the display module 1 so that the inner recess depth of the inner recess H is increased.

[0060] The first plane P11 may correspond to the display module 1 located in the plane area PA, and the first curved surface P12 may correspond to the display module 1 located in the curved area QA, so as to be pressed accordingly.

[0061] In this embodiment, a recessed portion H may be pre-set on the first side surface C1 of the bonding jig 4. During bonding, the recessed portion H of the bonding jig 4 is greatly deformed due to the reaction force of the display module 1, so that the recessed depth of the recessed portion H increases. The display module 1 in the curved area QA is subjected to the forces of the bonding jig 4 in both the sliding and bonding pressure directions, and the deformation of the recessed portion H of the bonding jig 4 is relatively large. The display module 1 in the curved area QA is squeezed, causing the adhesive material at the edge of the adhesive layer 2 to flow and deform toward the curved area QA, thereby achieving an overall effect of increasing the curvature of the display module 1 in the curved area QA.

[0062] Optionally, the concave portion H includes a curved surface structure, that is, includes an inwardly concave curved surface, and the specific curvature of the curved surface can be set according to actual conditions.

[0063] Optionally, the inner recess H includes a curved surface structure, that is, a cross section of the inner recess H includes an arc line.

[0064] Optionally, the fitting jig is a profiling jig.

[0065] Optionally, the material of the profiling fixture includes silicone material.

[0066] Optionally, along a direction perpendicular to the first plane P11 , a distance between the first curved surface P12 and the second surface P2 is smaller than a distance between the first plane P11 and the second surface P2 , so that the first plane P11 has a downward trend and is smoothly connected to the first side surface C1 .

[0067] See also Figure 7 The embodiment of the present invention further provides a bonding jig 4, which is used in the display panel bonding method in any of the above embodiments. The bonding jig 4 includes: a first surface P1 and a second surface P2 that are opposite to each other, and a first side surface C1 that connects the first surface P1 and the second surface P2. The first surface P1 includes a first plane P11 and a first curved surface P12 that are connected to each other. The first curved surface P12 is connected to the first side surface C1. The first side surface C1 includes an inner concave portion H that is concave in a direction parallel to the first plane P11.

[0068] In the laminating jig 4 provided in the embodiment of the present invention, the first plane P11 can correspond to the display module 1 located in the plane area PA, and the first curved surface P12 can correspond to the display module 1 located in the curved area QA, so as to be pressed accordingly. In this embodiment, an inner concave portion H can be set on the first side surface C1 of the laminating jig 4. During laminating, the inner concave portion H of the laminating jig 4 is greatly deformed due to the reaction force of the display module 1, so that the inner concave depth of the inner concave portion H increases. The display module 1 in the curved area QA is subjected to the forces of the laminating jig 4 in the sliding and laminating pressure directions, and the deformation of the inner concave portion H of the laminating jig 4 is relatively large. The display module 1 in the curved area QA is squeezed so that the adhesive material at the edge of the adhesive layer 2 flows and deforms toward the curved area QA, and the overall curvature of the display module 1 in the curved area QA becomes larger.

[0069] An embodiment of the present invention further provides a display device, comprising the display panel in any of the above embodiments.

[0070] The display device provided by the embodiment of the present invention has the technical effect of the technical solution of the display panel in any of the above embodiments, and the explanation of the structures and terms that are the same as or corresponding to the above embodiments will not be repeated here.

[0071] The display device provided in the embodiment of the present application can be applied to a mobile phone, or it can be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment, touch interactive terminals, etc. The embodiment of the present application does not make any special limitations on this.

[0072] The above are only specific implementation methods of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

[0073] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

Claims

1. A display panel, characterized in that: The display panel includes adjacent planar areas and curved areas, and the display panel includes: A display module, wherein the display module comprises a light emitting surface; An adhesive layer, the adhesive layer covers the light emitting surface of the display module, the adhesive layer comprises a first adhesive portion provided in the curved surface area, and the thickness of the first adhesive portion is unevenly arranged; The cover plate is arranged on a side of the adhesive layer away from the display module; wherein the curvature of the display module located in the curved surface area is smaller than the curvature of the cover plate located in the curved surface area.

2. The display panel according to claim 1, characterized in that: The first adhesive portion includes a middle portion and edge portions arranged on both sides of the middle portion along a direction perpendicular to a thickness direction of the display panel, and a thickness of the middle portion is greater than a thickness of the edge portions.

3. The display panel according to claim 1, characterized in that: The adhesive layer further includes a second adhesive portion disposed in the plane area, and the thickness of the second adhesive portion is set equal.

4. The display panel according to claim 1, characterized in that: The curved surface area includes an arc-angle curved surface area and an edge curved surface area connected to the arc-angle curved surface area, and the arc-angle curved surface area and the edge curved surface area are alternately arranged along the circumference of the display panel; The curvature of the display module located in the arc-angle curved surface area is smaller than the curvature of the cover plate located in the arc-angle curved surface area; Optionally, the curved surface area includes four arc-angle curved surface areas; Optionally, the curvature of the display module located in the edge curved surface area is smaller than the curvature of the cover plate located in the edge curved surface area.

5. A display panel bonding method, characterized in that: The display panel includes adjacent flat areas and curved areas, and the display panel bonding method includes the following steps: A display module, an adhesive layer and a cover plate are provided, wherein the adhesive layer covers the light-emitting surface of the display module, the cover plate is connected to the adhesive layer located in the flat area, and a reserved space is provided between the cover plate and the adhesive layer located in the curved area; Providing a laminating jig, and coating a lubricating layer on a laminating surface of the laminating jig; A side of the bonding surface of the bonding jig is placed in contact with the side of the display module facing away from the cover plate, and an extrusion force is applied to make the bonding jig slide relative to the display module in a direction from the flat area to the curved area. The adhesive layer is deformed in the reserved space under the extrusion of the bonding jig to form a first bonding portion with uneven thickness in the curved area, so that the curvature of the display module in the curved area is smaller than the curvature of the cover plate located in the curved area.

6. The display panel bonding method according to claim 5, characterized in that: The friction coefficient between the laminating surface of the laminating jig and the display module is greater than or equal to 0.2 and less than or equal to 0.5; Optionally, the material of the lubricating layer includes one of silicone beads or silicone oil.

7. The display panel bonding method according to claim 5, characterized in that: In the step of providing a bonding jig: the bonding jig includes an opposite first surface, a second surface, and a first side surface connecting the first surface and the second surface, the first surface includes a first plane and a first curved surface connected to each other, the first curved surface and the first side surface are connected, and the first side surface includes a concave portion concave inwardly along a direction parallel to the first plane; In the step of contacting one side of the bonding surface of the bonding jig against the side of the display module away from the cover plate: the bonding jig is subjected to a reaction force of the display module, so that the inner concave depth of the inner concave portion increases; Optionally, the inner concave portion includes a curved surface structure or an arc surface structure.

8. A laminating jig, used in the display panel laminating method according to any one of claims 5 to 7, characterized in that: The laminating jig comprises: A first surface, a second surface and a first side surface connecting the first surface and the second surface are opposite, the first surface includes a first plane and a first curved surface connected to each other, the first curved surface and the first side surface are connected, and the first side surface includes a concave portion concave inward along a direction parallel to the first plane.

9. The laminating jig according to claim 8, characterized in that: The fitting jig is a profiling jig; Optionally, the material of the profiling fixture includes silicone material; Optionally, along a direction perpendicular to the first plane, a distance between the first curved surface and the second surface is smaller than a distance between the first plane and the second surface.

10. A display device, characterized in that: A display panel comprising any one of claims 1 to 4.

Images