Support structure and display device

Abstract

The present invention discloses a support structure and a display device. The support structure is bonded to the non-light-emitting side of the display panel, the support structure includes a first support area, the display panel includes a bending area, and the first support area is used to bond with the bending area; the support structure also includes a support layer, a first protective layer, a release layer and an adhesive layer, the first protective layer and the release layer are respectively located on both sides of the support layer, and are respectively bonded to the support layer through the adhesive layer; the adhesion between the release layer and the support layer is less than the adhesion between the first protective layer and the support layer, and along the first direction, the adhesive layer and the first support area are staggered. Through the above scheme, the peeling difficulty of the release layer in the support structure is relatively small, avoiding the problem of the release layer being reversely released; in addition, after the support structure is bent, it can be directly bonded to the display panel through its own adhesive layer, without the need to set up an additional double-sided tape for bonding, which not only simplifies the bonding process, but also avoids the display panel from being affected when the double-sided tape is pressed.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of display technology, and in particular to a supporting structure and a display device. Background Art

[0002] After the display panel is prepared, it needs to be bonded to the support structure to form a display device. In the prior art, the support structure and the display panel are generally bonded by double-sided tape. However, in the process of using double-sided tape for bonding, on the one hand, glue overflow may occur, affecting the bonding effect; on the other hand, when the double-sided tape is attached to the display panel, it needs to be pressed, and the pressing process may cause damage to the display panel. Summary of the invention

[0003] In view of this, the present invention provides a support structure and a display device to simplify the bonding process between the support structure and the display panel, thereby preventing the support structure from damaging the display panel when bonding the display panel.

[0004] In a first aspect, an embodiment of the present invention provides a support structure, wherein the support structure is used to be attached to a non-light-emitting side of a display panel;

[0005] The support structure includes a first support area, the display panel includes a bending area, and the first support area is used to fit with the bending area;

[0006] The support structure further includes a support layer, a first protective layer, a release layer and an adhesive layer, wherein the first protective layer and the release layer are respectively located on both sides of the support layer and are respectively bonded to the support layer through the adhesive layer;

[0007] The adhesion between the release layer and the support layer is smaller than that between the first protective layer and the support layer, and the bonding layer and the first support area are staggered along a first direction; the first direction is parallel to the direction from the support layer to the release layer.

[0008] In a second aspect, an embodiment of the present invention further provides a display device, including the support structure described in the first aspect of the present invention;

[0009] The display device further includes a display panel, the display panel includes a bending area, the support structure includes a first support area; the first support area is in contact with the bending area;

[0010] The support structure comprises a support layer and a bonding layer, and the bonding layer and the bending area are staggered.

[0011] In an embodiment of the present invention, the support structure is laminated on the non-light-emitting side of the display panel, wherein the support structure includes a first support area, the display panel includes a bending area, and the first support area is used to laminate with the bending area; the support structure also includes a support layer, a first protective layer, a release layer and an adhesive layer, the first protective layer and the release layer are respectively located on both sides of the support layer, and are respectively bonded to the support layer through the adhesive layer; the adhesion between the release layer and the support layer is less than the adhesion between the first protective layer and the support layer, and along the first direction, the adhesive layer and the first support area are staggered; the first direction is parallel to the direction of the support layer pointing to the release layer. Through the above technical solution, it is less difficult to peel off the release layer in the support structure. When peeling off the first protective layer and the release layer on both sides of the support structure, the release layer will be separated from the support structure first, and the first protective layer will still remain on the support structure, avoiding the problem of reverse release of the release layer. In addition, after the support structure is bent, it can be directly and firmly attached to the back of the display panel through its own adhesive layer. There is no need to additionally set up double-sided tape, nor is there any need to press the double-sided tape, the support structure, and the display panel. This not only simplifies the lamination process of the support structure and the display panel, but also avoids the impact of the lamination process in the prior art on the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A structural schematic diagram of a support structure provided by an embodiment of the present invention;

[0013] Figure 2 A schematic diagram of the relative position relationship between a support structure and a display panel provided by an embodiment of the present invention;

[0014] Figure 3 A schematic structural diagram of another supporting structure provided by an embodiment of the present invention;

[0015] Figure 4 A schematic diagram of the structure of a display device provided by an embodiment of the present invention;

[0016] Figure 5 A schematic diagram of the structure of another display device provided by an embodiment of the present invention;

[0017] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at Z;

[0018] Figure 7 A flow chart of a display device bonding method provided by an embodiment of the present invention;

[0019] Figure 8 for Figure 7 Schematic diagram of the bonding method. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0021] The supporting structure in the prior art only includes a supporting portion, a protective portion and a release film. When the supporting structure is bonded to the display panel, the release film is torn off and the side of the supporting portion close to the release film is attached to the non-light-emitting side of the display panel. Then the protective portion is torn off, and a double-sided tape is provided on the surface of the supporting portion close to the protective portion, and the double-sided tape is pressed against the supporting portion; after pressing, the supporting portion is bent to the back of the display panel, and the supporting portion is adhered to the back of the display panel with the double-sided tape. In order to ensure the adhesion effect, a pressing process is also required to press the supporting portion against the display panel. When a display device is prepared using the supporting structure in the prior art, the supporting structure needs to be pressed multiple times in the step area of ​​the display panel. The process flow is cumbersome, and the pressing process can easily damage the display panel. In view of this, the inventor proposes the technical solution in the present application.

[0022] The present application provides a support structure for being bonded to a non-light-emitting side of a display panel, the support structure comprising: a first support area, the display panel comprising a bending area, the first support area being used to bond with the bending area; the support structure further comprising a support layer, a first protective layer, a release layer and an adhesive layer, the first protective layer and the release layer are respectively located on both sides of the support layer, and are respectively bonded to the support layer through the adhesive layer; the adhesion between the release layer and the support layer is less than the adhesion between the first protective layer and the support layer, and along a first direction, the adhesive layer and the first support area are staggered; the first direction is parallel to the direction from the support layer to the release layer.

[0023] By adopting the technical solution in the present application, it is relatively easy to peel off the release layer in the support structure. When peeling off the first protective layer and the release layer on both sides of the support structure, the release layer will be separated from the support structure first, and the first protective layer will remain on the support structure, avoiding the problem of the release layer being reversely separated. In addition, since the adhesive layer is sticky, the support structure can be directly and firmly attached to the back of the display panel after being bent, without the need to set up double-sided tape additionally, and without the need to press the double-sided tape with the support structure and the display panel, which simplifies the laminating process of the support structure and the display panel and avoids the impact of the laminating process in the prior art on the display panel.

[0024] The above is the core idea of ​​the present invention. The technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The embodiment of the present invention provides a support structure for being attached to the non-light-emitting side of a display panel. Figure 1 A structural schematic diagram of a support structure provided by an embodiment of the present invention, Figure 2 A schematic diagram of the relative position relationship between a support structure and a display panel provided by an embodiment of the present invention. Figure 1 and Figure 2 The support structure 1 includes: a first support area 10, the display panel 2 includes a bending area 20, and the first support area 10 is used to fit with the bending area 20; the support structure 1 also includes a support layer 11, a first protective layer 12, a release layer 13 and an adhesive layer 14, the first protective layer 12 and the release layer 13 are respectively located on both sides of the support layer 11, and are respectively bonded to the support layer 11 through the adhesive layer 14; the adhesion between the release layer 13 and the support layer 11 is less than the adhesion between the first protective layer 12 and the support layer 11, and along the first direction X, the adhesive layer 14 and the first support area 10 are staggered; the first direction X is parallel to the direction from the support layer 11 to the release layer 13.

[0026] Specifically, the support structure 1 provided in the present application is attached to the non-light-emitting side of the display panel 2 to prepare a display device. The display panel 2 is a flexible display panel. The display panel 2 includes a bending area 20. With the help of the bending area 20, the binding area of ​​the display panel 2 for binding devices such as a flexible circuit board can be bent to the non-light-emitting side of the display panel 2, that is, the back of the display panel 2. Figure 1 and Figure 2 As shown in the figure, the support structure 1 includes: a first support area 10, the first support area 10 corresponds to the bending area 20 of the display panel 2, and during the bonding process with the display panel 2, the first support area 10 of the support structure 1 is bonded correspondingly to the bending area 20 of the display panel 2.

[0027] Among them, the support structure 1 also includes a support layer 11, a first protective layer 12, a release layer 13 and an adhesive layer 14. The support layer 11 is used to ensure the strength of the entire support structure 1 and prevent the support structure 1 from deforming. Adhesive layers 14 are provided on both sides of the support layer 11, and the adhesive layers 14 on both sides are used to bond the first protective layer 12 and the release layer 13 respectively. It can also be understood that the support structure 1 includes a release layer 13, an adhesive layer 14, a support layer 11, an adhesive layer 14 and a first protective layer 12 arranged in a stacked manner. The release layer 13 is close to the side that is bonded to the display panel 2, that is, the non-light-emitting side of the display panel 2. The first protective layer 12 is arranged on the side of the support structure 1 away from the display panel 2, and is used to protect the support structure 1 and prevent the support structure 1 from being damaged during transportation or attachment to the display panel 2. It should be noted that in order to clearly show the structure of the support structure 1, Figure 2 The thickness of each film layer in the support structure 1 is magnified. Figure 1 The dimensions of the various film layers shown in the figure do not represent the actual setting dimensions.

[0028] In addition, in the present application, the adhesion between the release layer 13 and the support layer 11 is set to be smaller than the adhesion between the first protective layer 12 and the support layer 11. In other words, the bonding strength between the release layer 13 and the support layer 11 is smaller than the bonding strength between the first protective layer 12 and the support layer 11. It can be understood that when the support structure 1 is bonded to the display panel 2, the release layer 13 is first torn off, and the support layer 11 is attached to the non-light-emitting side of the display panel 2 through the adhesive layer 14 on the side of the support structure 1 close to the release layer 13, and the first support area 10 of the support structure 1 corresponds to the bending area 20 of the display panel 2; then the first protective layer 12 is peeled off, and the support layer 11 in the binding area of ​​the display panel 2 and the corresponding area is bent to the back of the display panel 2, and then the support layer 11 bent to the back is fixed to the display panel 2 through the adhesive layer 14 on the side of the support structure 1 close to the first protective layer 12. The adhesion between the release layer 13 and the support layer 11 is set to be smaller than the adhesion between the first protective layer 12 and the support layer 11, so that the release layer 13 is less difficult to peel off. When peeling off the first protective layer 12 and the release layer 13 on both sides of the support layer 11, the release layer 13 will first be separated from the support structure 1, and the first protective layer 12 will still remain on the support structure 1, avoiding the problem of reverse release of the release layer.

[0029] In addition, it is worth pointing out that in the present application, after the first protective layer 12 is peeled off and the display panel 2 and the support layer 11 are bent to the back of the display panel 2, the area of ​​the support structure 1 opposite to the binding area will be directly bonded to the back of the display panel 2 through the adhesive layer 14 of the support structure 1. Since the adhesive layer 14 is sticky, the support structure 1 can be directly and firmly attached to the back of the display panel 2 after being bent, without the need to set up an additional double-sided tape, and without the need to press the double-sided tape with the support structure 1 and the display panel 2, which simplifies the laminating process of the support structure 1 and the display panel 2 and avoids the impact of the laminating process in the prior art on the display panel 2.

[0030] Continue to refer Figure 1 and Figure 2 , a direction parallel to the support layer 11 pointing to the release layer 13 is defined as the first direction X. In the embodiment of the present invention, the adhesive layer 14 is staggered with the first support area 10. The support layer 11 and the adhesive layer 14 are not provided at the first support area 10 of the support structure 1. In this arrangement, the support layer 11 and the adhesive layer 14 are not provided at the position of the support structure 1 corresponding to the bending area 20 of the display panel 2, which is beneficial to improving the bending performance of the support structure 1, and can also reduce the material of the support structure 1 and reduce the setting cost of the support structure 1.

[0031] The embodiments of the present invention do not limit the specific material of the adhesive layer, and those skilled in the art may select it according to actual needs. In a possible embodiment, the adhesive layer may be made of pressure-sensitive adhesive, but is not limited thereto.

[0032] In an embodiment of the present invention, the support structure is laminated on the non-light-emitting side of the display panel, wherein the support structure includes a first support area, the display panel includes a bending area, and the first support area is used to laminate with the bending area; the support structure also includes a support layer, a first protective layer, a release layer and an adhesive layer, the first protective layer and the release layer are respectively located on both sides of the support layer, and are respectively bonded to the support layer through the adhesive layer; the adhesion between the release layer and the support layer is less than the adhesion between the first protective layer and the support layer, and along the first direction, the adhesive layer and the first support area are staggered; the first direction is parallel to the direction of the support layer pointing to the release layer. Through the above technical solution, it is less difficult to peel off the release layer. When peeling off the first protective layer and the release layer on both sides of the support structure, the release layer will first detach from the support structure, and the first protective layer will still remain on the support structure, avoiding the problem of reverse release of the release layer. In addition, after the support structure is bent, it can be directly and firmly attached to the back of the display panel through its own adhesive layer. There is no need to additionally set up double-sided tape, nor is there any need to press the double-sided tape, the support structure, and the display panel. This not only simplifies the lamination process of the support structure and the display panel, but also avoids the impact of the lamination process in the prior art on the display panel.

[0033] Optional, can still refer to Figure 1 In a possible embodiment, the adhesive layer 14 includes a first adhesive layer 141 disposed between the first protective layer 12 and the support layer 11, and a second adhesive layer 142 disposed between the release layer 13 and the support layer 11; the viscosity of the first adhesive layer 141 is greater than the viscosity of the second adhesive layer 142, and along the first direction X, the first adhesive layer 141 and the second adhesive layer 142 are staggered with the first support area 10.

[0034] Specifically, Figure 1 As shown in , the adhesive layer 14 can be divided into a first adhesive layer 141 between the first protective layer 12 and the support layer 11, and a second adhesive layer 142 between the support layer 11 and the release layer 13. In this embodiment, the viscosity of the first adhesive layer 141 can be set to be greater than the viscosity of the second adhesive layer 142. When the viscosity of the second adhesive layer 142 is smaller than the viscosity of the first adhesive layer 141, the adhesion between the release layer 13 and the support layer 11 will be less than the adhesion between the first protective layer 12 and the support layer 11.

[0035] Furthermore, in this embodiment, the first adhesive layer 141 and the second adhesive layer 142 are staggered from the first supporting area 10, and only the first protective layer 12 is provided at the first supporting area 10. This can not only ensure that after the release layer 13 is torn off, the supporting structure 1 and the display panel 2 are accurately fitted to avoid misalignment, but also improve the bending performance of the supporting structure 1.

[0036] In this embodiment, a material with greater viscosity can be directly selected to form the first adhesive layer 141, and a material with less viscosity can be directly selected to form the second adhesive layer 142, so that the adhesion force between the first protective layer 12 and the support layer 11 is greater than the adhesion force between the release layer 13 and the support layer 11 by adjusting the relative viscosity of the first adhesive layer 141 and the second adhesive layer 142.

[0037] Optional, can still refer to Figure 1 and Figure 2 In a possible embodiment, the support structure 1 may further include a second support area 15 and a third support area 16, and the first support area 10 is located between the second support area 15 and the third support area 16; the display panel 2 also includes a display area 21 and a binding area 22, and the bending area 20 is located between the display area 21 and the binding area 22; the second support area 15 is used to fit with the display area 21, and the third support area 16 is used to fit with the binding area 22; the support layer 11 includes a first support section 111 located in the second support area 15 and a second support section 112 located in the third support area 16, and the first bonding layer 141 includes a first bonding section 143 located in the second support area 15 and a second bonding section 144 located in the third support area 16; wherein, the adhesion between the first bonding section 143 and the first support section 111 is less than the adhesion between the first bonding section 143 and the first protective layer 12.

[0038] Specifically, Figure 1 and Figure 2 As shown in , in this embodiment, the support structure 1 also includes a second support area 15 and a third support area 16. Along the second direction Y shown in the figure, the first support area 10 is located between the second support area 15 and the third support area 16. The display panel 2 includes a display area 21 and a binding area 22. In the above embodiment, it is mentioned that the binding area 22 of the display panel 2 is used to bind devices such as flexible circuit boards and is bent to the back of the display panel 2 through the bending area 20, and the display area 21 is used to display the picture. Along the second direction Y, the bending area 20 is located between the display area 21 and the binding area 22, the second support area 15 of the support structure 1 is relatively fitted with the display area 21 of the display panel 2, and the third support area 16 of the support structure 1 is relatively fitted with the binding area 22 of the display panel 2. The support layer 11 in the third support area 16 is bent to the back of the display panel 2 together with the binding area 22.

[0039] Further, still refer to Figure 1, the support layer 11 can be divided into a first support section 111 and a second support section 112. The first support section 111 is located in the second support area 15, that is, the first support section 11 corresponds to the display area 21 of the display panel 2; the second support section 112 is located in the third support area 16, that is, the second support section 112 corresponds to the binding area 22 of the display panel 2. Correspondingly, the first adhesive layer 141 can be divided into a first adhesive section 143 and a second adhesive section 144. The first adhesive section 143 is located in the second support area 15 and is used to bond the first support section 111 to the first protective layer 12. The second adhesive section 144 is located in the third support area 16 and is used to bond the second support section 112 to the first protective layer 12.

[0040] It is worth mentioning that, in this embodiment, the adhesion between the first adhesive section 143 and the first supporting section 111 is set to be smaller than the adhesion between the first adhesive section 143 and the first protective layer 12, that is, the adhesion strength between the first adhesive section 143 and the first protective layer 12 and the first supporting section 111 bonded to both sides thereof is different, and the adhesion strength between the first adhesive section 143 and the first supporting section 111 is smaller. It can be understood that when the support structure 1 is bonded to the display panel 2, if the adhesion between the first adhesive section 143 and the first supporting section 111 is greater than the adhesion between the first adhesive section 143 and the first protective layer 12, when the first protective layer 12 is removed, the first adhesive section 143 will still remain on the surface of the first supporting section 111, affecting the subsequent process flow. The first adhesive section 143 and the first protective layer 12 have a large adhesive force, which can ensure that when the first protective layer 12 is torn off, the first adhesive section 143 and the first protective layer 12 are removed at the same time, and the surface of the first supporting section 111 is free of glue.

[0041] Among them, the embodiments of the present invention do not limit how to set the first bonding section 143 so that the adhesion between the first bonding section 143 and the materials on both sides is different. Those skilled in the art can choose according to actual needs. Any technical solution that can achieve different adhesion on both sides of the first bonding section 143 is within the scope of the technical solution protected by the embodiments of the present invention.

[0042] Exemplarily, in a possible embodiment, the first bonding section 143 may include a strong and weak glue gasket; the strong and weak glue gasket includes a strong glue surface and a weak glue surface, and the viscosity of the strong glue surface is greater than the viscosity of the weak glue surface; the strong glue surface adheres to the first protective layer 12, and the weak glue surface adheres to the first supporting section 111.

[0043] Specifically, in this embodiment, the first bonding section 143 can be formed by using a strong and weak adhesive gasket, and the first supporting section 111 and the first protective layer 12 are bonded together by the strong and weak adhesive gasket. The two side surfaces of the strong and weak adhesive gasket are respectively a strong adhesive surface and a weak adhesive surface, the viscosity of the strong adhesive surface is greater than the viscosity of the weak adhesive surface, the strong adhesive surface of the strong and weak adhesive gasket is close to the first protective layer 12 and attached to the first protective layer 12, and the weak adhesive surface of the strong and weak adhesive gasket is close to the first supporting section 111 and attached to the first supporting section 111.

[0044] In this embodiment, the first bonding section 143 is configured as a strong and weak adhesive gasket, and the strong adhesive surface is attached to the first protective layer 12, and the weak adhesive surface is attached to the first protective layer 12. Through one material, the adhesion force between the first bonding section 143 and the first supporting section 111 can be smaller than the adhesion force between the first bonding section 143 and the first protective layer 12, which is beneficial to reducing the preparation cost of the support structure 1 and simplifying the preparation process.

[0045] Optional, Figure 3 A schematic diagram of another supporting structure provided by an embodiment of the present invention, referring to Figure 3 In a possible embodiment, the supporting structure 1 may further include a second protective layer 121 located between the second supporting section 112 and the first protective layer 12; the second bonding section 144 includes a first sub-bonding section 145 located between the second supporting section 112 and the second protective layer 121 and a second sub-bonding section 146 located between the second protective layer 121 and the first protective layer 12; wherein the viscosity of the first sub-bonding section 145 is greater than the viscosity of the second sub-bonding section 146.

[0046] Specifically, Figure 3 As shown in , the support structure 1 is further provided with a second protective layer 121, and the second protective layer 121 is located between the second support section 112 and the first protective layer 12. At this time, the second bonding section 144 may further include a first sub-bonding section 145 and a second sub-bonding section 146, the first sub-bonding section 145 is located between the second support section 112 and the second protective layer 121, and is used to bond the second support section 112 and the second protective layer 121; the second sub-bonding section 146 is located between the first protective layer 12 and the second protective layer 121, and is used to bond the first protective layer 12 and the second protective layer 121.

[0047] The viscosity of the first sub-adhesive section 145 is greater than the viscosity of the second sub-adhesive section 146, that is, the adhesive force between the first protective layer 12 and the second protective layer 121 is less than the adhesive force between the second supporting section 112 and the second protective layer 121. At the same time, the adhesive force between the first protective layer 12 and the second protective layer 121 can also be set to be equal to the adhesive force between the first adhesive section 143 and the first supporting section 111.

[0048] It can be understood that after the release layer 13 of the support structure 1 is torn off and attached to the non-light-emitting side of the display panel 2, the first protective layer 12 needs to be torn off first, and then the second support section 112 needs to be bent to the back of the display panel 2. At this time, since the adhesion between the first protective layer 12 and the second protective layer 121 is equal to the adhesion between the first bonding section 143 and the first support section 111, when the first protective layer 12 is torn off, the first bonding section 143 and the second sub-bonding section 146 will be removed at the same time as the first protective layer 12, and the second protective layer 121 will remain on the surface of the second support section 112. Under this arrangement, when the second support section 112 is bent, the second protective layer 121 can protect the second support section 112, avoiding damage to the surface of the second support section 112 that is to be bonded to the display panel 2 during bending, thereby ensuring the bonding effect between the second support section 112 and the display panel 2.

[0049] F1 represents the adhesion between the release layer 13 and the support layer 11, F2 represents the adhesion between the first bonding section 143 and the first support section 111, F3 represents the adhesion between the first bonding section 143 and the first protective layer 12, F4 represents the adhesion between the first protective layer 12 and the second protective layer 121, and F5 represents the adhesion between the second protective layer 121 and the second support section 112. In combination with the above embodiments, the present application may set F1<F2<F4<F5, and F1<F2<F4<F3 to ensure the tearing effect of the first protective layer 12 and the release layer 13. The relative sizes of F3 and F5 are not limited in the embodiments of the present invention, and those skilled in the art may set them according to actual needs, for example, F5<F3 may be set, but it is not limited thereto.

[0050] Optional, can still refer to Figure 3 In a possible embodiment, the sum of the thicknesses of the first supporting section 111 and the first bonding section 143 is L1, and the sum of the thicknesses of the second supporting section 112, the first sub-bonding section 145, the second protective layer 121 and the second sub-bonding section 146 is L2; ​​wherein, |L2-L1| / L1≤20%.

[0051] In this embodiment, the overall thickness of each supporting structure 1 can be further set, such as Figure 3 As shown in the figure, L1 represents the sum of the thicknesses of the first supporting section 111 and the first bonding section 143, that is, along the first direction X, between the first protective layer 12 and the release layer 13, and the total thickness of each film layer located in the second supporting area 15 is L1; L2 represents the sum of the thicknesses of the two supporting sections, the first sub-bonding section 145, the second protective layer 121 and the second sub-bonding section 146, that is, along the first direction X, between the first protective layer 12 and the release layer 13, and the total thickness of each film layer located in the third supporting area 16 is L2.

[0052] |L2-L1| / L1≤20%, that is, after removing the first protective layer 12 and the release layer 13, the total thickness of the film layer in the third support area 16 of the support structure 1 is less than or equal to 0.2 compared with the total thickness of the film layer in the second support area 15. Under this setting, the difference between L1 and L2 is small, which can ensure the adhesion effect of the first protective layer 12, the release layer 13 and the above-mentioned film layers in the support structure 1.

[0053] In a preferred embodiment, |L2-L1| / L1=0 can be set, that is, L1 and L2 are equal. At this time, the first protective layer 12 and the release layer 13 can fit tightly with the above-mentioned film layer structure to prevent dust and other impurities from entering the gaps between the film layers and affecting the normal application of the support structure 1.

[0054] The specific values ​​of L1 and L2 are not limited in the embodiment of the present invention, and those skilled in the art may adjust them according to actual needs.

[0055] Optional, can still refer to Figure 1 In a possible embodiment, a thickness D1 of the first supporting section 111 is smaller than a thickness D2 of the second supporting section 112 .

[0056] Specifically, Figure 1 As shown in , the thickness of the first support section 111 corresponding to the display area 21 of the display panel 2 is D1, and the thickness of the second support section 112 corresponding to the binding area 22 of the display panel 2 is D2. In this embodiment, D1 can be set to be smaller than D2. Generally, the display area 21 of the display panel 2 occupies a larger area of ​​the entire display panel 2, and the binding area 22 occupies a relatively smaller area of ​​the entire display panel 2. The thickness D1 of the first support section 111 is set to be smaller than the thickness D2 of the second support section 112. After the support structure 1 is bonded to the display panel 2, the overall thickness of the display device is smaller, which is conducive to the thinness of the display device.

[0057] The specific values ​​of D1 and D2 are not limited in the embodiment of the present invention, and those skilled in the art may adjust them according to actual needs.

[0058] Optionally, in a possible embodiment, the peel strength of the first adhesive layer 141 is greater than or equal to 780 N / m, and the peel strength of the second adhesive layer 142 is greater than or equal to 780 N / m. Peel strength can also be understood as peeling force or adhesion force. In this embodiment, the peel strength of the first adhesive layer 141 and the second adhesive layer 142 can be set to be greater than 780 N / m to ensure that the support structure 1 does not rebound after being bent, thereby improving the adhesion effect between the support structure 1 and the display panel 2.

[0059] Based on the same concept, an embodiment of the present invention further provides a display device, Figure 4 A schematic diagram of the structure of a display device provided by an embodiment of the present invention, Figure 4 The figure shows the state of the display panel 2 and the support structure 1 when they are not bent. Figure 4 As shown, the display device includes a support structure 1 provided by any embodiment of the present invention; it also includes a display panel 2, the display panel 2 includes a bending area 20, the support structure 1 includes a first support area 10; the first support area 10 is bonded to the bending area 20; the support structure 1 includes a support layer 11 and an adhesive layer (not shown in the figure), and the adhesive layer and the bending area 20 are staggered.

[0060] Since the adhesive layer is very thin, after the support structure 1 and the display panel 2 are attached, the thickness of the adhesive layer can be ignored. Figure 4 The adhesive layer is not shown in the figure, and the specific arrangement of the adhesive layer can refer to the above embodiment. The display device provided by the embodiment of the present invention includes all the technical features and corresponding beneficial effects of the support structure provided by any embodiment of the present invention, which will not be repeated here.

[0061] Optional, Figure 5 A schematic diagram of the structure of another display device provided by an embodiment of the present invention, Figure 6 for Figure 5 Schematic diagram of the enlarged structure at Z, refer to Figure 5 and Figure 6 In a possible embodiment, the support structure 1 may further include a second support area 15 and a third support area 16, and the first support area 10 is located between the second support area 15 and the third support area 16; the display panel 2 also includes a display area 21 and a binding area 22, and the bending area 20 is located between the display area 21 and the binding area 22; the second support area 15 is attached to the display area 21, the third support area 16 is attached to the binding area 22, and the binding area 22 is bent along the bending area 20 to the non-light-emitting side of the display panel 2; the display device also includes a protective structure 30, and the protective structure 30 is arranged between the first support section 111 and the second support section 112; the bending radius of the bending area 20 is R, the thickness of the first support section 111 is D1, the thickness of the second support section 112 is D2, and the thickness of the protective structure 30 is D3; wherein, R=(D1+D2+D3) / 2.

[0062] The support structure 1 further includes a second support area 15 and a third support area 16, and the first support area 10 is located between the second support area 15 and the third support area 16. The display panel 2 further includes a display area 21 and a binding area 22, and the bending area 20 is located between the display area 21 and the binding area 22. The second support area 15 of the support structure 1 is relatively fitted with the display area 21 of the display panel 2, and the third support area 16 of the support structure 1 is relatively fitted with the binding area 22 of the display panel 2. The binding area 22 is bent along the bending area 20 to the non-light emitting side of the display panel 2, that is, the back side of the display panel 2. When bending, the second support section 112 located in the third support area 16 is bent together with the binding area 22 to the non-light emitting side of the display panel 2.

[0063] Among them, reference Figure 5 and Figure 6 The display device further includes a protective structure 30. After the second supporting section 112 and the binding area 22 are bent to the back of the display panel 2, the protective structure 30 is located between the first supporting section 111 and the second supporting section 112 along a direction parallel to the vertical light emitting direction of the display panel 2. The protective structure 30 may be a SCF (Super Clean Foam) structure and / or a copper foil structure, but is not limited thereto. The protective structure 30 can buffer the stress acting on the display panel 2, prevent the display panel 2 from being deformed and broken, and / or play a good heat conduction role.

[0064] It can be understood that the bending radius R between the second supporting section 112 and the binding area 22 is related to the thickness of the first supporting section 111 , the second supporting section 112 and the protective structure. Figure 6 As shown in , when the setting method of the first supporting section 111 and the second supporting section 112 in the present application is adopted, the bending radius R of the bending zone 20, the thickness D1 of the first supporting section 111, the thickness D2 of the second supporting section 112, and the thickness D3 of the protective structure 30 should satisfy R=(D1+D2+D3) / 2.

[0065] Figure 7 A flowchart of a display device bonding method provided by an embodiment of the present invention, Figure 8 for Figure 7 Schematic diagram of the bonding method, see Figure 7 and Figure 8 , the bonding method of the display device in the embodiment of the present invention includes:

[0066] S110 , providing a supporting structure and a display panel.

[0067] refer to Figure 8In the middle (a) figure, the support structure 1 can adopt the support structure 1 provided by any embodiment of the present invention, and the display panel 2 can be set by those skilled in the art according to actual needs, and the embodiment of the present invention does not repeat or limit this. The display panel 2 includes a bending area 20, a display area 21 and a binding area 22, and the support structure 1 includes a first support area 10, a second support area 15 and a third support area 16.

[0068] S120, tearing off the release layer on one side of the support structure, and laminating the exposed surface of the support structure after the release film is torn off to the non-light emitting side of the display panel.

[0069] refer to Figure 8 In Figure (b), specifically, the support layer 11 in the support structure 1 is bonded to the release layer 13 and the first protective layer 12 respectively through the adhesive layer 14. When the support structure 1 is bonded to the display panel 2, the release layer 13 on one side of the support structure is first torn off, and the support layer 11 is attached to the non-light-emitting side of the display panel 2 through the adhesive layer 14 on the side of the support structure 1 close to the release layer 13.

[0070] In addition, since the adhesion between the release layer 13 and the support layer 11 is less than the adhesion between the first protective layer 12 and the support layer 11, the release layer 13 is less difficult to peel off. When peeling off the first protective layer 12 and the release layer 13 on both sides of the support layer 11, the release layer 13 will first be separated from the support structure 1, and the first protective layer 12 will still remain on the support structure 1. It should be noted that since the adhesive layer 14 is very thin, after the support structure 1 is attached to the display panel 2 through the adhesive layer 14, the adhesive layer 14 between the support structure 1 and the display panel 2 is not shown.

[0071] In this step, it is ensured that the first supporting area 10 is in contact with the bending area 20 , the second supporting area 15 is in contact with the display area 21 , and the third supporting area 16 is in contact with the binding area 22 .

[0072] S130, tearing off the first protective layer on the other side of the supporting structure, and attaching the protective structure to a surface of the first supporting portion away from the display panel.

[0073] refer to Figure 8In the middle (c) figure, since the adhesion between the first adhesive section (not shown in the figure) and the first supporting section 111 is smaller than the adhesion between the first adhesive section (not shown in the figure) and the first protective layer 12, and the adhesion between the first protective layer 12 and the second protective layer 121 is equal to the adhesion between the first adhesive section (not shown in the figure) and the first supporting section 111, when the first protective layer 12 is torn off, the first adhesive section (not shown in the figure) and the second sub-adhesive section (not shown in the figure) will be removed simultaneously with the first protective layer 12, the first supporting section 111 is exposed, and the second protective layer 121 is retained on the surface of the second supporting section 112. Then, the protective structure 30 is bonded to the exposed surface of the first supporting section 111 of the supporting structure 1.

[0074] S140, bend the portion of the support structure located in the third support area and the binding area of ​​the display panel to the non-light-emitting side of the display panel at the same time, tear off the second protective layer, and fit the second support section to the protective structure.

[0075] refer to Figure 8 In the middle (d) figure, the second protective layer 121, the second supporting sub-division 112 and the binding area 22 of the display panel 2 are simultaneously bent to the back of the display panel 2. The second protective layer 121 is removed, and the second supporting sub-division 112 can be directly fixed to the side surface of the protective structure 30 away from the first supporting sub-division 111 through the first adhesive sub-division (not shown in the figure).

[0076] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments, combinations and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A support structure, characterized in that: The support structure is used to be attached to the non-light emitting side of the display panel; The support structure includes a first support area, the display panel includes a bending area, and the first support area is used to fit with the bending area; The support structure further includes a support layer, a first protective layer, a release layer and an adhesive layer, wherein the first protective layer and the release layer are respectively located on both sides of the support layer and are respectively bonded to the support layer through the adhesive layer; The adhesion force between the release layer and the support layer is smaller than the adhesion force between the first protective layer and the support layer, and along a first direction, the adhesive layer and the first support area are staggered; the first direction is parallel to the direction from the support layer to the release layer; The support structure further includes a second support area and a third support area, and the first support area is located between the second support area and the third support area; the display panel further includes a display area and a binding area, and the bending area is located between the display area and the binding area; the second support area is used to fit with the display area, and the third support area is used to fit with the binding area; The bonding layer comprises a first bonding layer disposed between the first protective layer and the supporting layer, the first bonding layer comprises a second bonding sub-portion located in the third supporting area; the supporting layer comprises a second supporting sub-portion located in the third supporting area, and the supporting structure further comprises a second protective layer located between the second supporting sub-portion and the first protective layer; The second bonding section includes a first sub-bonding section located between the second supporting section and the second protective layer and a second sub-bonding section located between the second protective layer and the first protective layer; wherein the viscosity of the first sub-bonding section is greater than that of the second sub-bonding section.

2. The support structure according to claim 1, characterized in that: The bonding layer further includes a second bonding layer disposed between the release layer and the support layer; The viscosity of the first adhesive layer is greater than that of the second adhesive layer, and along the first direction, the first adhesive layer and the second adhesive layer are both staggered with the first supporting area.

3. The support structure according to claim 2, characterized in that: The supporting layer also includes a first supporting section located in the second supporting area, and the first bonding layer also includes a first bonding section located in the second supporting area; wherein the adhesion between the first bonding section and the first supporting section is smaller than the adhesion between the first bonding section and the first protective layer.

4. The support structure according to claim 3, characterized in that: The first bonding section includes strong and weak adhesive gaskets; The strong and weak adhesive gasket comprises a strong adhesive surface and a weak adhesive surface, and the viscosity of the strong adhesive surface is greater than the viscosity of the weak adhesive surface; The strong adhesive surface is adhered to the first protective layer, and the weak adhesive surface is adhered to the first supporting section.

5. The support structure according to claim 4, characterized in that: The sum of the thicknesses of the first supporting section and the first bonding section is L1, and the sum of the thicknesses of the second supporting section, the first sub-bonding section, the second protective layer and the second sub-bonding section is L2; Among them, |L2-L1| / L1≤20%.

6. The support structure according to claim 3, characterized in that: The thickness of the first supporting section is smaller than the thickness of the second supporting section. 7 . The support structure according to claim 2 , wherein the peel strength of the first adhesive layer is greater than or equal to 780 N / m, and the peel strength of the second adhesive layer is greater than or equal to 780 N / m.

8. A display device, characterized in that: A support structure comprising any one of claims 1 to 7; The display device further includes a display panel, the display panel includes a bending area, the support structure includes a first support area; the first support area is in contact with the bending area; The support structure comprises a support layer and a bonding layer, and the bonding layer and the bending area are staggered.

9. The display device according to claim 8, characterized in that: The support structure further includes a second support area and a third support area, and the first support area is located between the second support area and the third support area; the display panel further includes a display area and a binding area, and the bending area is located between the display area and the binding area; the second support area is attached to the display area, the third support area is attached to the binding area, and the binding area is bent along the bending area to the non-light-emitting side of the display panel; The display device further comprises a protection structure, wherein the protection structure is disposed between the first supporting section and the second supporting section; The bending radius of the bending zone is R, the thickness of the first supporting section is D1, the thickness of the second supporting section is D2, and the thickness of the protective structure is D3; Among them, R=(D1+D2+D3) / 2.

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