Display device

Abstract

The invention discloses a display device, which is characterized in that the display device comprises a connecting layer, the connecting layer is arranged in a spacing groove, the connecting layer is connected with a first supporting part and a second supporting part, the surface of one side, close to a display panel, of the connecting layer is bonded with a bonding layer, and the thickness of the connecting layer is smaller than that of the supporting layer; the problem that a segment difference exists between the first supporting part and the second supporting part is solved, when the release protection layer is torn off before the non-display surface of the display panel and the supporting structure are fixed, after the release protection layer is separated from the first supporting part, the film tearing force for tearing off the release protection layer from the second supporting part can be continuous, and the film tearing efficiency is improved. It is guaranteed that the release protection layer can be torn more easily, the situation that when the release protection layer located on the second supporting layer is torn down, larger tearing external force is needed, consequently, the supporting layer and the protection layer are separated, and the supporting structure is prone to reverse release is avoided, and it is guaranteed that the display panel with the supporting structure can conduct the follow-up production process; therefore, the yield of the display device is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display device. Background Art

[0002] When producing a display device, a support structure is provided on the non-display surface of a display panel of the display device. The support structure is composed of a protective layer, a support layer, an adhesive layer and a release protective layer stacked in sequence. When fixing the support structure to the non-display surface of the display panel, it is necessary to tear off the release protective layer and then fix the non-display surface of the display panel to the support layer through the adhesive layer. When tearing off the release protective layer, the support layer and the protective layer will separate, making it easy for the support structure to release, resulting in the display panel provided with the support structure being unable to proceed with subsequent production processes, resulting in a reduction in the yield of the display device. Summary of the invention

[0003] Embodiments of the present application provide a display device to improve the problem of reduced yield of the display device.

[0004] An embodiment of the present application provides a display device, including:

[0005] A display panel, the display panel comprising a display portion, a bending portion and a binding portion, the display portion being connected to the binding portion via the bending portion;

[0006] an adhesive layer, the adhesive layer being disposed on the non-display surface of the display panel;

[0007] A supporting layer, the supporting layer is arranged on a surface of the adhesive layer away from the display panel, the supporting layer comprises a first supporting portion and a second supporting portion, a spacing groove is formed between the first supporting portion and the second supporting portion, the first supporting portion is arranged on a surface of the adhesive layer away from the display portion, the second supporting portion is arranged on a surface of the adhesive layer away from the binding portion, in a top view of the display device, the first supporting portion overlaps with the display portion, the second supporting portion overlaps with the binding portion, and the spacing groove corresponds to the bending portion;

[0008] A connecting layer is disposed in the spacing groove, the connecting layer is connected to the first supporting portion and the second supporting portion, and a surface of the connecting layer close to the display panel is bonded to the adhesive layer.

[0009] Furthermore, the ratio of the thickness of the connecting layer to the thickness of the supporting layer is not greater than 1 / 3.

[0010] Furthermore, the connecting layer includes a first connecting portion, which is connected to the first supporting portion and the second supporting portion, and the surface of the first connecting portion close to the display panel is connected to the adhesive layer, and the first connecting portion is located in the middle area of ​​the spacing groove, and in the length direction of the spacing groove, the length of the first connecting portion is smaller than the length of the spacing groove.

[0011] Furthermore, in the length direction of the spacing groove, the ratio of the length of the first connecting portion to the length of the spacing groove is not greater than 1 / 2.

[0012] Furthermore, the connection layer includes two second connection parts, the second connection parts are connected to the first support part and the second support part, the two second connection parts are respectively located in the end areas of the spacing groove, and the two second connection parts are spaced apart.

[0013] Furthermore, in the length direction of the spacing groove, the ratio of the sum of the lengths of the two second connecting portions to the length of the spacing groove is not greater than 1 / 2.

[0014] Furthermore, the connection layer includes a plurality of third connection parts, the third connection parts are connected to the first support part and the second support part, and the plurality of third connection parts are spaced apart.

[0015] Furthermore, in the length direction of the spacing groove, the ratio of the sum of the lengths of the plurality of third connecting portions to the length of the spacing groove is not greater than 1 / 2.

[0016] Furthermore, the connecting layer includes a fourth connecting portion, which is connected to the first supporting portion and the second supporting portion, and the fourth connecting portion is located in the spacing groove. In the length direction of the spacing groove, the length of the fourth connecting portion is equal to the length of the spacing groove.

[0017] Furthermore, a surface of the connection layer on a side close to the display panel is flush with a surface of the support layer on a side close to the display panel.

[0018] Beneficial effects of this application:

[0019] The present application provides a display device, wherein the display device includes a connecting layer, the connecting layer is arranged in the spacing groove, the connecting layer is connected to the first supporting part and the second supporting part, the surface of the connecting layer close to the display panel is bonded to the adhesive layer, and the thickness of the connecting layer is less than the thickness of the supporting layer, thereby improving the step difference problem between the first supporting part and the second supporting part. When the release protective layer is torn off before the non-display surface of the display panel is fixed to the supporting structure, after the release protective layer is detached from the first supporting part, the tearing force of tearing the release protective layer from the second supporting part can be continuous, thereby ensuring that the release protective layer can be torn off more easily, thereby avoiding the need for a larger tearing external force when tearing off the release protective layer located on the second supporting layer, resulting in separation of the supporting layer and the protective layer, making it easy for the supporting structure to reversely release, thereby ensuring that the display panel provided with the supporting structure can carry out subsequent production processes, thereby improving the yield of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of a display device in the present application;

[0021] Figure 2 is a top view of the first supporting structure in the present application;

[0022] Figure 3 yes Figure 2 A cross-sectional view of the first supporting structure at AA′ shown;

[0023] Figure 4 is a top view of the second support structure in the present application;

[0024] Figure 5 yes Figure 4 A cross-sectional view at BB′ of the second support structure shown;

[0025] Figure 6 is a top view of the third supporting structure in the present application;

[0026] Figure 7 yes Figure 6 A cross-sectional view of the third supporting structure at CC′ shown;

[0027] Figure 8 is a top view of the fourth supporting structure in the present application;

[0028] Fig. 9 yes Figure 8 A cross-sectional view of the fourth supporting structure at DD′ shown;

[0029] Fig.10 is a schematic diagram of a display device of a conventional solution;

[0030] Fig.11 It is a schematic diagram of the support structure of the traditional solution when the release protective film is torn off.

[0031] 100-display panel, 110-display part, 120-bending part, 130-binding part, 200-adhesive layer, 300-support layer, 310-first support part, 320-second support part, 330-spacer groove; 400-connecting layer, 410-first connection part, 420-second connection part, 430-third connection part, 440-fourth connection part; 500-release protective layer, 510-first release protective layer, 520-second release protective layer.

[0032] 10 - protective layer, 20 - supporting layer, 21 - first supporting portion, 22 - second supporting portion; 30 - adhesive layer; 40 - release protective layer. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. The technical solutions described below are only used to explain and illustrate the ideas of the present application and should not be regarded as limiting the scope of protection of the present application.

[0034] In addition, the terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different technical features. The term "plurality" and similar words mean two or more, unless otherwise clearly defined.

[0035] When manufacturing a display device, a support structure is provided on the non-display surface of the display panel of the display device. Fig.10 and Fig.11 The support structure is composed of a protective layer 10, a support layer 20, an adhesive layer 30 and a release protective layer 40 which are stacked in sequence. When the support structure is fixed to the non-display surface of the display panel, the release protective layer needs to be torn off, and then the non-display surface of the display panel is fixed to the support layer 20 through the adhesive layer 30. When the release protective layer 40 is torn off, since there is a certain distance between the first support portion 21 of the support layer 20 for supporting the display portion of the display panel and the second support portion 22 of the support layer 20 for supporting the binding portion of the display panel, there is a step difference between the first support portion 21 and the second support portion 22, resulting in discontinuous tearing force for tearing off the release protective layer. When the release protective layer 40 is detached from the first support portion 21, when the release protective layer 40 is detached from the portion located on the second support portion 22, it is necessary to tear it off again, and the external force for tearing it off will be greater, so that the support layer and the protective layer 10 will be separated, making the support structure prone to reverse release, resulting in the display panel provided with the support structure being unable to proceed with the subsequent production process, resulting in a reduction in the yield of the display device.

[0036] The first embodiment of the present application provides a first display device, referring to Figure 1-Figure 3 The display device includes a display panel 100 , an adhesive layer 200 , a support layer 300 and a connection layer 400 .

[0037] Specifically, the display panel 100 includes a display portion 110, a bending portion 120 and a binding portion 130, the display portion 110 is connected to the binding portion 130 via the bending portion 120; the adhesive layer 200 is disposed on the non-display surface of the display panel 100; the support layer 300 is disposed on a surface of the adhesive layer 200 away from the display panel 100, the support layer 300 includes a first support portion 310 and a second support portion 320, a spacing groove 330 is formed between the first support portion 310 and the second support portion 320, the first support portion 310 is disposed on a surface of the adhesive layer 200 away from the display portion 110, and the second support portion 320 is disposed on a surface of the adhesive layer 200 away from the binding portion 130. In a top view of the display device, The first supporting portion 310 overlaps with the display portion 110, the second supporting portion 320 overlaps with the binding portion 130, and the spacing groove 330 overlaps with the bending portion 120; the connecting layer 400 is arranged in the spacing groove 330, and the thickness of the connecting layer 400 is less than the thickness of the supporting layer 300, the connecting layer 400 includes a first connecting portion 410, the first connecting portion 410 is connected to the first supporting portion 310 and the second supporting portion 320, the surface of the first connecting portion 410 close to the display panel 100 is connected to the adhesive layer 200, the first connecting portion 410 is located in the middle area of ​​the spacing groove 330, and in the length direction of the spacing groove 330, the length of the first connecting portion 410 is less than the length of the spacing groove 330.

[0038] By setting the connection layer 400 to include a first connection portion 410, the first connection portion 410 is connected to the first support portion 310 and the second support portion 320, the surface of the first connection portion 410 close to the display panel 100 is connected to the adhesive layer 200, and the thickness of the connection layer 400 is less than the thickness of the support layer 300, the first connection portion 410 is located in the middle area of ​​the spacing groove 330, and in the length direction of the spacing groove 330, the length of the first connection portion 410 is less than the length of the spacing groove 330, thereby improving the problem of the step difference between the first support portion 310 and the second support portion 320. When the release protective layer is torn off before the non-display surface of the display panel 100 is fixed to the supporting structure, after the release protective layer is detached from the first support portion 310, the tearing force of the release protective layer from the second support portion 320 can be continuous, thereby ensuring that the release protective layer can be torn off more easily, avoiding The release protective layer on the second supporting layer 300 needs a greater tearing force, which may cause the supporting structure to easily release. This ensures that the display panel 100 provided with the supporting structure can carry out the subsequent production process, thereby improving the yield of the display device. At the same time, when tearing off the release protective layer, the film is often torn off from the lower left corner or the lower right corner. When the release protective layer passes through the spacing groove 330, the part of the release protective layer close to the lower end or the upper end of the spacing groove 330 has been detached. Therefore, the first connecting part 410 is arranged in the middle area of ​​the spacing groove 330. When the release protective layer is detached from the second supporting part 320, a part of the release protective layer is still in contact with the first connecting part 410, thereby further ensuring that the tearing force for tearing off the release protective layer from the first supporting part 310 and the second supporting part 320 can be continuous, thereby reducing the difficulty of tearing off the release protective layer from the second supporting part 320.

[0039] In this embodiment, the first support portion 310 is connected to the display portion 110 through a portion of the adhesive layer 200 , and the second support portion 320 is connected to the binding portion 130 through a portion of the adhesive layer 200 .

[0040] In this embodiment, in the length direction of the spacing groove 330, the ratio of the length of the first connection portion 410 to the length of the spacing groove 330 is not greater than 1 / 2. By setting the ratio of the length of the first connection portion 410 to the length of the spacing groove 330 to be not greater than 1 / 2, compared with the solution of setting the ratio of the length of the first connection portion 410 to the length of the spacing groove 330 to be greater than 1 / 2, on the one hand, it is possible to reduce the materials generated by setting the first connection portion 410, thereby reducing the cost of producing the display device, and on the other hand, it is possible to make the first connection portion 410 easier to bend, thereby avoiding an increase in the difficulty of bending the display device.

[0041] In this embodiment, the surface of the connection layer 400 close to the display panel 100 is flush with the surface of the support layer 300 close to the display panel 100. By setting the surface of the connection layer 400 close to the display panel 100 to be flush with the surface of the support layer 300 close to the display panel 100, it is possible to prevent the display surface of the display panel 100 corresponding to the bending portion 120 of the folding display device from being marked and causing poor appearance. Specifically, the surface of the first connection portion 410 close to the display panel 100 is flush with the surface of the support layer 300 close to the display panel 100.

[0042] In this embodiment, the ratio of the thickness of the connection layer 400 to the thickness of the support layer 300 is not greater than 1 / 3. By setting the ratio of the thickness of the connection layer 400 to the thickness of the support layer 300 to be not greater than 1 / 3, the connection layer 400 has better elasticity, and avoids the connection layer 400 from being subjected to a force greater than its own strength, which causes the support layer 300 to break, thereby improving the structural stability of the bending portion 120 of the display device. Specifically, the ratio of the thickness of the first connection portion 410 to the thickness of the support layer 300 is not greater than 1 / 3.

[0043] In this embodiment, the adhesive layer 200, the supporting layer 300, the connecting layer 400 and the release protective layer together constitute a supporting structure, wherein the release protective layer needs to be torn off before the supporting structure and the display panel are fixed. Therefore, the display device composed of the supporting structure and the display panel does not include a release protective layer.

[0044] In this embodiment, the adhesive layer includes a first adhesive portion and a second adhesive portion, and the adhesive content of the second adhesive portion is higher than the adhesive content of the first adhesive portion; in the top view of the display device, the first adhesive portion overlaps with the first supporting portion 310, and the second adhesive portion overlaps with the second supporting portion 320.

[0045] The second embodiment of the present application provides a second display device, referring to Figure 1 , Figure 4 and Figure 5 The display device includes a display panel 100 , an adhesive layer 200 , a support layer 300 and a connection layer 400 .

[0046] Specifically, the display panel 100 includes a display portion 110, a bending portion 120 and a binding portion 130, wherein the display portion 110 is connected to the binding portion 130 via the bending portion 120; the adhesive layer 200 is disposed on a non-display surface of the display panel 100; the supporting layer 300 is disposed on a surface of the adhesive layer 200 away from the display panel 100, the supporting layer 300 includes a first supporting portion 310 and a second supporting portion 320, a spacing groove 330 is formed between the first supporting portion 310 and the second supporting portion 320, the first supporting portion 310 is disposed on a surface of the adhesive layer 200 away from the display portion 110, and the second supporting portion 320 is disposed on the adhesive layer 200 0 is a surface away from the binding portion 130. In the top view of the display device, the first supporting portion 310 overlaps with the display portion 110, the second supporting portion 320 overlaps with the binding portion 130, and the spacing groove 330 overlaps with the bending portion 120. The connecting layer 400 is arranged in the spacing groove 330, and the thickness of the connecting layer 400 is less than the thickness of the supporting layer 300. The connecting layer 400 includes two second connecting portions 420, the second connecting portions 420 are connected to the first supporting portion 310 and the second supporting portion 320, and the two second connecting portions 420 are respectively located in the end areas of the spacing groove 330, and the two second connecting portions 420 are arranged at intervals.

[0047] By arranging the connection layer 400 in the spacing groove 330, and the thickness of the connection layer 400 is less than the thickness of the supporting layer 300, the connection layer 400 includes two second connection parts 420, the second connection parts 420 are connected to the first supporting part 310 and the second supporting part 320, and the surface of the second connection part 420 close to the display panel 100 is connected to the adhesive layer 200, the two second connection parts 420 are respectively located in the end area of ​​the spacing groove 330, and the two second connection parts 420 are arranged at intervals; the first supporting part 310 and the second supporting part 320 are connected to each other. There is a step difference problem between the two support parts 320. After the release protective layer is detached from the first support part 310, the tearing force for tearing off the release protective layer from the second support part 320 can be continuous, ensuring that the release protective layer can be torn off more easily. This avoids the need for a larger tearing force when tearing off the release protective layer located on the second support layer 300, resulting in separation of the support layer 300 and making the support structure prone to reverse release. This ensures that the display panel 100 provided with the support structure can carry out subsequent production processes, thereby improving the yield of the display device.

[0048] In this embodiment, the first support portion 310 is connected to the display portion 110 through a portion of the adhesive layer 200 , and the second support portion 320 is connected to the binding portion 130 through a portion of the adhesive layer 200 .

[0049] In this embodiment, in the length direction of the spacing groove 330, the ratio of the sum of the lengths of the two second connection parts 420 to the length of the spacing groove 330 is not greater than 1 / 2. By setting the ratio of the sum of the lengths of the two second connection parts 420 to the length of the spacing groove 330 to be not greater than 1 / 2, compared with the solution of setting the ratio of the length of the second connection part 420 to the length of the spacing groove 330 to be greater than 1 / 2, on the one hand, it is possible to reduce the materials generated by setting the second connection part 420, thereby reducing the cost of producing the display device, and on the other hand, it is possible to make the second connection part 420 easier to bend, thereby avoiding an increase in the difficulty of bending the display device.

[0050] In this embodiment, the surface of the connection layer 400 close to the display panel 100 is flush with the surface of the support layer 300 close to the display panel 100. By setting the surface of the connection layer 400 close to the display panel 100 to be flush with the surface of the support layer 300 close to the display panel 100, it is possible to prevent the display surface of the display panel 100 corresponding to the bent portion 120 of the display device from having marks and resulting in poor appearance. Specifically, the surface of the second connection portion 420 close to the display panel 100 is flush with the surface of the support layer 300 close to the display panel 100.

[0051] In this embodiment, the ratio of the thickness of the connection layer 400 to the thickness of the support layer 300 is not greater than 1 / 3. By setting the ratio of the thickness of the connection layer 400 to the thickness of the support layer 300 to be not greater than 1 / 3, the connection layer 400 has better elasticity, and avoids the connection layer 400 from being subjected to a force greater than its own strength, which causes the support layer 300 to break, thereby improving the structural stability of the bending portion 120 of the display device. Specifically, the ratio of the thickness of the second connection portion 420 to the thickness of the support layer 300 is not greater than 1 / 3.

[0052] In this embodiment, the adhesive layer 200, the support layer 300, the connecting layer 400 and the release protective layer 500 together constitute a support structure, wherein the release protective layer 500 includes a first release protective layer 510 and a second release protective layer 520, the first release protective layer 510 is arranged on a surface of the adhesive layer 200 away from the support layer 300, and the second release protective layer 520 is arranged on a surface of the support layer 300 away from the adhesive layer 200. Before the support structure and the display panel are fixed, the release protective layer 500 needs to be torn off. Therefore, the display device composed of the support structure and the display panel does not include the release protective layer 500.

[0053] In this embodiment, the adhesive layer includes a first adhesive portion and a second adhesive portion, and the adhesive content of the second adhesive portion is higher than the adhesive content of the first adhesive portion; in the top view of the display device, the first adhesive portion overlaps with the first supporting portion 310, and the second adhesive portion overlaps with the second supporting portion 320.

[0054] The third embodiment of the present application provides a third display device, referring to Figure 1 , Figure 6 and Figure 7 The display device includes a display panel 100 , an adhesive layer 200 , a support layer 300 and a connection layer 400 .

[0055] Specifically, the display panel 100 includes a display portion 110, a bending portion 120 and a binding portion 130, wherein the display portion 110 is connected to the binding portion 130 via the bending portion 120; the adhesive layer 200 is disposed on a non-display surface of the display panel 100; the supporting layer 300 is disposed on a surface of the adhesive layer 200 away from the display panel 100, the supporting layer 300 includes a first supporting portion 310 and a second supporting portion 320, a spacing groove 330 is formed between the first supporting portion 310 and the second supporting portion 320, the first supporting portion 310 is disposed on a surface of the adhesive layer 200 away from the display portion 110, The second supporting portion 320 is disposed on a surface of the adhesive layer 200 away from the binding portion 130. In a top view of the display device, the first supporting portion 310 overlaps with the display portion 110, the second supporting portion 320 overlaps with the binding portion 130, and the spacing groove 330 overlaps with the bending portion 120. The connecting layer 400 is disposed in the spacing groove 330, and the thickness of the connecting layer 400 is less than the thickness of the supporting layer 300. The connecting layer 400 includes a plurality of third connecting portions 430, which are connected to the first supporting portion 310 and the second supporting portion 320, and the plurality of third connecting portions 430 are spaced apart.

[0056] By setting the thickness of the connecting layer 400 to be smaller than the thickness of the supporting layer 300, the connecting layer 400 includes a plurality of third connecting parts 430, the third connecting parts 430 are connected to the first supporting part 310 and the second supporting part 320, and the surface of the third connecting part 430 close to the display panel 100 is connected to the adhesive layer 200, thereby improving the problem of the step difference between the first supporting part 310 and the second supporting part 320. When the release protective layer is torn off before the non-display surface of the display panel 100 is fixed to the supporting structure, after the release protective layer is detached from the first supporting part 310, the tearing force of tearing off the release protective layer from the second supporting part 320 can be continuous, thereby ensuring that the release protective layer can be torn off more easily, thereby avoiding the situation that a larger tearing external force is required when tearing off the release protective layer located on the second supporting layer 300, resulting in the separation of the supporting layer 300 and the protective layer, making the supporting structure prone to reverse release, thereby ensuring that the display panel 100 provided with the supporting structure can carry out the subsequent production process, thereby improving the yield of the display device. At the same time, due to the spacing of the plurality of third connecting portions 430 , the tearing force of the release protective layer from the connecting layer 400 can be more uniform while reducing the material used in the connecting layer 400 .

[0057] In this embodiment, the first support portion 310 is connected to the display portion 110 through a portion of the adhesive layer 200 , and the second support portion 320 is connected to the binding portion 130 through a portion of the adhesive layer 200 .

[0058] In this embodiment, the number of the third connection parts 430 is 3, 4, 5, 6, 7, 8, 9 or 10. The specific number of the third connection parts 430 is determined according to the actual length of the groove.

[0059] In this embodiment, in the length direction of the spacing groove 330, the ratio of the sum of the lengths of the plurality of third connection portions 430 to the length of the spacing groove 330 is not greater than 1 / 2. By setting the ratio of the length of the third connection portion 430 to the length of the spacing groove 330 to be not greater than 1 / 2, compared with the solution in which the ratio of the length of the third connection portion 430 to the length of the spacing groove 330 is greater than 1 / 2, on the one hand, the materials generated by setting the third connection portion 430 can be reduced, thereby reducing the cost of producing the display device, and on the other hand, the third connection portion 430 is easier to bend, thereby avoiding an increase in the difficulty of bending the display device.

[0060] In this embodiment, the surface of the connection layer 400 close to the display panel 100 is flush with the surface of the support layer 300 close to the display panel 100. By setting the surface of the connection layer 400 close to the display panel 100 to be flush with the surface of the support layer 300 close to the display panel 100, it is possible to prevent the display surface of the display panel 100 corresponding to the bending portion 120 of the display device from having marks and resulting in poor appearance. Specifically, the surface of the third connection portion 430 close to the display panel 100 is flush with the surface of the support layer 300 close to the display panel 100.

[0061] In this embodiment, the ratio of the thickness of the connection layer 400 to the thickness of the support layer 300 is not greater than 1 / 3. By setting the ratio of the thickness of the connection layer 400 to the thickness of the support layer 300 to be not greater than 1 / 3, the connection layer 400 has better elasticity, and avoids the situation where the connection layer 400 is subjected to a force greater than its own strength and causes the support layer 300 to break, thereby improving the structural stability of the bending portion 120 of the display device. Specifically, the ratio of the thickness of the third connection portion 430 to the thickness of the support layer 300 is not greater than 1 / 3.

[0062] In this embodiment, the adhesive layer 200, the supporting layer 300, the connecting layer 400 and the release protective layer together constitute a supporting structure, wherein the release protective layer needs to be torn off before the supporting structure and the display panel are fixed. Therefore, the display device composed of the supporting structure and the display panel does not include a release protective layer.

[0063] In this embodiment, the adhesive layer includes a first adhesive portion and a second adhesive portion, and the adhesive content of the second adhesive portion is higher than the adhesive content of the first adhesive portion; in the top view of the display device, the first adhesive portion overlaps with the first supporting portion 310, and the second adhesive portion overlaps with the second supporting portion 320.

[0064] The fourth embodiment of the present application provides a fourth display device, referring to Figure 1 , Figure 8 and Fig. 9 The display device includes a display panel 100 , an adhesive layer 200 , a support layer 300 and a connection layer 400 .

[0065] Specifically, the display panel 100 includes a display portion 110, a bending portion 120 and a binding portion 130, wherein the display portion 110 is connected to the binding portion 130 via the bending portion 120; the adhesive layer 200 is disposed on a non-display surface of the display panel 100; the supporting layer 300 is disposed on a surface of the adhesive layer 200 away from the display panel 100, the supporting layer 300 includes a first supporting portion 310 and a second supporting portion 320, a spacing groove 330 is formed between the first supporting portion 310 and the second supporting portion 320, the first supporting portion 310 is disposed on a surface of the adhesive layer 200 away from the display portion 110, and the second supporting portion 320 is disposed on a surface of the adhesive layer 200 away from the binding portion 130. A surface of the portion 130, in a top view of the display device, the first supporting portion 310 overlaps with the display portion 110, the second supporting portion 320 overlaps with the binding portion 130, and the spacing groove 330 overlaps with the bending portion 120; the connecting layer 400 is arranged in the spacing groove 330, and the thickness of the connecting layer 400 is less than the thickness of the supporting layer 300, the connecting layer 400 includes a fourth connecting portion 440, the fourth connecting portion 440 is connected to the first supporting portion 310 and the second supporting portion 320, the fourth connecting portion 440 is located in the spacing groove 330, and in the length direction of the spacing groove 330, the length of the fourth connecting portion 440 is equal to the length of the spacing groove 330.

[0066] By setting the thickness of the connecting layer 400 to be smaller than the thickness of the supporting layer 300, the connecting layer 400 includes a fourth connecting portion 440, the fourth connecting portion 440 is connected to the first supporting portion 310 and the second supporting portion 320, and the surface of the fourth connecting portion 440 close to the display panel 100 is connected to the adhesive layer 200, thereby improving the problem of the step difference between the first supporting portion 310 and the second supporting portion 320. When the release protective layer is torn off before the non-display surface of the display panel 100 is fixed to the supporting structure, after the release protective layer is detached from the first supporting portion 310, the tearing force of tearing the release protective layer from the second supporting portion 320 can be continuous, thereby ensuring that the release protective layer can be torn off more easily, and avoiding the need for a larger tearing outer layer when tearing off the release protective layer located on the second supporting layer 300. The force causes the support layer 300 to separate from the protective layer, making the support structure prone to reverse release, ensuring that the display panel 100 provided with the support structure can proceed with the subsequent production process, thereby improving the yield of the display device; at the same time, the length of the fourth connecting part 440 is equal to the length of the spacing groove 330, so that when the release protective layer passes through the spacing groove 330, a part of the release protective layer is always in contact with the fourth connecting part 440. Compared with the solution in which the length of the fourth connecting part 440 is less than the length of the spacing groove 330, there is no situation in which the release protective layer and the fourth connecting part 440 are not in contact during the film tearing process, ensuring that the tearing force of the release protective layer from the first supporting part 310 and the second supporting part 320 can be more continuous, and there will be no uneven film tearing force.

[0067] In this embodiment, the first support portion 310 is connected to the display portion 110 through a portion of the adhesive layer 200 , and the second support portion 320 is connected to the binding portion 130 through a portion of the adhesive layer 200 .

[0068] In this embodiment, the surface of the connection layer 400 close to the display panel 100 is flush with the surface of the support layer 300 close to the display panel 100. By setting the surface of the connection layer 400 close to the display panel 100 to be flush with the surface of the support layer 300 close to the display panel 100, it is possible to prevent the display surface of the display panel 100 corresponding to the bending portion 120 of the display device from having marks and resulting in poor appearance. Specifically, the surface of the fourth connection portion 440 close to the display panel 100 is flush with the surface of the support layer 300 close to the display panel 100.

[0069] In this embodiment, the ratio of the thickness of the connection layer 400 to the thickness of the support layer 300 is not greater than 1 / 3. By setting the ratio of the thickness of the connection layer 400 to the thickness of the support layer 300 to be not greater than 1 / 3, the connection layer 400 has better elasticity, and avoids the connection layer 400 from being subjected to a force greater than its own strength, which causes the support layer 300 to break, thereby improving the structural stability of the bending portion 120 of the display device. Specifically, the ratio of the thickness of the fourth connection portion 440 to the thickness of the support layer 300 is not greater than 1 / 3.

[0070] In this embodiment, the adhesive layer 200, the supporting layer 300, the connecting layer 400 and the release protective layer together constitute a supporting structure, wherein the release protective layer needs to be torn off before the supporting structure and the display panel are fixed. Therefore, the display device composed of the supporting structure and the display panel does not include a release protective layer.

[0071] In this embodiment, the adhesive layer includes a first adhesive portion and a second adhesive portion, and the adhesive content of the second adhesive portion is higher than the adhesive content of the first adhesive portion; in the top view of the display device, the first adhesive portion overlaps with the first supporting portion 310, and the second adhesive portion overlaps with the second supporting portion 320.

[0072] The above is a detailed description of the specific implementation of the present application. The above implementation disclosed in the present application is only the preferred implementation of the present application. For ordinary technicians in this field, many modifications and improvements can be made without departing from the concept of the present application. These modifications and improvements all fall within the scope of protection defined by the claims of the present application.

Claims

1. A display device, characterized in that: include: A display panel, the display panel comprising a display portion, a bending portion and a binding portion, the display portion being connected to the binding portion via the bending portion; an adhesive layer, the adhesive layer being disposed on the non-display surface of the display panel; A supporting layer, the supporting layer is arranged on a surface of the adhesive layer away from the display panel, the supporting layer comprises a first supporting portion and a second supporting portion, a spacing groove is formed between the first supporting portion and the second supporting portion, the first supporting portion is arranged on a surface of the adhesive layer away from the display portion, the second supporting portion is arranged on a surface of the adhesive layer away from the binding portion, in a top view of the display device, the first supporting portion overlaps with the display portion, the second supporting portion overlaps with the binding portion, and the spacing groove corresponds to the bending portion; A connecting layer is arranged in the spacing groove, the connecting layer is connected to the first supporting part and the second supporting part, a surface of the connecting layer close to the display panel is bonded to the adhesive layer, and the thickness of the connecting layer is less than the thickness of the supporting layer.

2. The display device according to claim 1, characterized in that The ratio of the thickness of the connecting layer to the thickness of the supporting layer is not greater than 1 / 3.

3. The display device according to claim 1, characterized in that The connecting layer includes a first connecting portion, the first connecting portion is connected to the first supporting portion and the second supporting portion, and a surface of the first connecting portion close to the display panel is connected to the adhesive layer, the first connecting portion is located in the middle area of ​​the spacing groove, and in the length direction of the spacing groove, the length of the first connecting portion is smaller than the length of the spacing groove.

4. The display device according to claim 3, characterized in that: In the length direction of the spacing groove, the ratio of the length of the first connecting portion to the length of the spacing groove is not greater than 1 / 2.

5. The display device according to claim 1, characterized in that The connection layer includes two second connection parts, the second connection parts are connected to the first support part and the second support part, the two second connection parts are respectively located in the end areas of the spacing groove, and the two second connection parts are spaced apart.

6. The display device according to claim 5, characterized in that: In the length direction of the spacing groove, the ratio of the sum of the lengths of the two second connecting portions to the length of the spacing groove is not greater than 1 / 2.

7. The display device according to claim 1, characterized in that The connection layer includes a plurality of third connection parts, the third connection parts are connected to the first support part and the second support part, and the plurality of third connection parts are spaced apart.

8. The display device according to claim 7, characterized in that: In the length direction of the spacing groove, the ratio of the sum of the lengths of the plurality of third connecting portions to the length of the spacing groove is not greater than 1 / 2.

9. The display device according to claim 1, characterized in that: The connecting layer includes a fourth connecting portion, which is connected to the first supporting portion and the second supporting portion. The fourth connecting portion is located in the spacing groove, and in the length direction of the spacing groove, the length of the fourth connecting portion is equal to the length of the spacing groove.

10. The display device according to any one of claims 1 to 9, characterized in that: A surface of the connection layer close to the display panel is flush with a surface of the support layer close to the display panel.

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