Display device and display terminal

Abstract

The embodiment of the invention discloses a display device and a display terminal, and the display device comprises a display panel which comprises a first non-bending part, a second non-bending part and a bending part located between the first non-bending part and the second non-bending part; the whole spacer layer is arranged on the non-display side of the display panel; the supporting layer is arranged on the side, away from the display panel, of the spacing layer; wherein the supporting layer comprises a first supporting part and a second supporting part, the first supporting part and the second supporting part are arranged in a separated mode so that an interval gap can be formed between the first supporting part and the second supporting part, and the interval gap corresponds to the bending part. According to the embodiment of the invention, the spacing layer is used for supporting each film layer of the whole display device, and the flatness is high, so that initial imprint is prevented from being formed when each film layer of the display device is attached; the first supporting part and the second supporting part are separately arranged on the two sides of the interval gap, the thickness of the bending part is reduced, the display device is easy to bend through the interval gap, and creases can be reduced.

Description

[0001] This application is a divisional application with an application date of July 11, 2022, application number 202210810409.4, and invention name “A display device and display terminal”. Technical Field

[0002] The present application relates to the field of display, and in particular to a display device and a display terminal. Background Art

[0003] Flexible display devices such as flexible organic light emitting display devices (OLED) have been widely used in daily life, and foldable organic light emitting display devices have been developed, for example, foldable organic light emitting display devices have been used in foldable mobile phones.

[0004] However, in folding display devices, after repeated folding and unfolding, creases and marks are prone to problems. Creases are caused by fatigue bending of the film layer of the folding display device after repeated folding, resulting in irreversible plastic deformation of the material. Marks are caused by the fact that the folding display device itself is very thin and has insufficient supporting stiffness. It is easy for the non-bending part and the bending part to contact with the rigid surface of the middle frame structure of terminals such as mobile phones in the junction area, forming local stress concentration. After multiple bending, the stress is concentrated to a certain extent, and the upper material of the folding display device will also show certain deformation and damage, forming strip marks visible to the naked eye. In folding display devices, there is no good solution to the problem of crease marks and marks. Summary of the invention

[0005] The embodiments of the present application provide a display device and a display terminal, which can solve the problems of creases and prints at the same time.

[0006] An embodiment of the present application provides a display device, including:

[0007] The display panel comprises a first non-bending portion and a second non-bending portion, and a bending portion located between the first non-bending portion and the second non-bending portion;

[0008] A spacer layer, entirely disposed on the non-display side of the display panel;

[0009] A support layer is arranged on a side of the spacing layer away from the display panel, and the spacing layer is laminated to the support layer;

[0010] Wherein, the support layer includes a first support portion and a second support portion, the first support portion and the second support portion are separately arranged to form a spacing gap between the first support portion and the second support portion, and the spacing gap is arranged corresponding to the bending portion.

[0011] Optionally, in some embodiments of the present application, the thickness of the support layer is greater than the thickness of the spacing layer.

[0012] Optionally, in some embodiments of the present application, when the display device is in a flattened state, the width of the spacing gap is smaller than the width of the bending portion.

[0013] Optionally, in some embodiments of the present application, the bending portion includes a first transition bending portion, a main bending portion and a second transition bending portion, and the main bending portion is located between the first transition bending portion and the second transition bending portion;

[0014] The first support portion includes a first sub-support portion and a second sub-support portion, the second support portion includes a third sub-support portion and a fourth sub-support portion, the first sub-support portion is arranged corresponding to the first non-bending portion, the third sub-support portion is arranged corresponding to the second non-bending portion, the second sub-support portion is arranged corresponding to the first transition bending portion, and the fourth sub-support portion is arranged corresponding to the second transition bending portion, the second sub-support portion and the fourth sub-support portion each include a plurality of hollow holes, and the spacing gap is arranged corresponding to the main bending portion.

[0015] Optionally, in some embodiments of the present application, when the display device is in a flattened state, the width of the spacing gap is equal to the width of the main bending portion.

[0016] Optionally, in some embodiments of the present application, the elastic modulus of the spacing layer is greater than the elastic modulus of the supporting layer.

[0017] Optionally, in some embodiments of the present application, the bending axis of the bending portion extends in a first direction;

[0018] The length of the plurality of hollow holes in the first direction is greater than the length in the second direction, and the second direction is perpendicular to the first direction;

[0019] The plurality of hollow holes of the second sub-support portion and the plurality of hollow holes of the fourth sub-support portion are staggeredly distributed in the second direction.

[0020] Optionally, in some embodiments of the present application, the hollow density of the multiple hollow holes of the second sub-support portion gradually increases along the second direction close to the main bending portion; the hollow density of the multiple hollow holes of the fourth sub-support portion gradually increases along the second direction close to the main bending portion.

[0021] Optionally, in some embodiments of the present application, in the second direction, the widths of the plurality of hollow holes are the same;

[0022] The lengths of the plurality of hollow holes of the second sub-support portion in the first direction gradually increase along the second direction close to the main bending portion, and the lengths of the plurality of hollow holes of the fourth sub-support portion in the first direction gradually increase along the second direction close to the main bending portion.

[0023] Optionally, in some embodiments of the present application, the length of any of the hollow holes in the first direction is a first length value, the spacing between any of the hollow holes and the hollow holes adjacent to it on any side in the first direction is a second length value, and the sum of the first length value of the hollow hole and the corresponding second length value is a fixed value.

[0024] Optionally, in some embodiments of the present application, the surface of the support layer away from the spacing layer has a centrally symmetrical structure.

[0025] Optionally, in some embodiments of the present application, a first adhesive layer is further included, the first adhesive layer includes a first adhesive portion and a second adhesive portion, the first supporting portion is attached to the spacing layer through the first adhesive portion, the second supporting portion is attached to the spacing layer through the second adhesive portion, and the first adhesive portion and the second adhesive portion are separately arranged corresponding to the spacing gap;

[0026] The first adhesive portion and the second adhesive portion are both non-hollowed out.

[0027] Optionally, in some embodiments of the present application, the material of the spacer layer and the material of the support layer respectively include at least one of stainless steel, carbon fiber, titanium alloy, magnesium aluminum alloy, nickel alloy, polyester fiber and acrylic.

[0028] Optionally, in some embodiments of the present application, it further includes:

[0029] A backplane layer, disposed between the spacer layer and the display panel;

[0030] A foam layer, disposed between the back plate layer and the spacer layer;

[0031] The display panel, the back plate layer, the foam layer, the spacing layer and two adjacent ones of the support layer are arranged in contact with each other.

[0032] Accordingly, an embodiment of the present application further provides a display terminal, comprising any of the display devices described above, and:

[0033] A middle frame housing, the middle frame housing being arranged on a side of the support layer away from the display panel, the middle frame housing comprising a first middle frame and a second middle frame, the first middle frame being arranged at least corresponding to the first non-bending portion, the second middle frame being arranged at least corresponding to the second non-bending portion, and when the display device is in a flattened state, the first middle frame and the second middle frame are in contact at a position corresponding to the bending portion;

[0034] The rotating mechanism is accommodated in the middle frame shell and connected to the first middle frame shell and the second middle frame. When the display device is in a flat state, the rotating mechanism is arranged between the bent portion of the display panel and the middle frame shell.

[0035] Optionally, in some embodiments of the present application, the bending portion includes a first transition bending portion, a main bending portion and a second transition bending portion, and the main bending portion is located between the first transition bending portion and the second transition bending portion;

[0036] The rotating mechanism includes a hinge mounting base, and the hinge mounting base includes an arc-shaped accommodating groove. When the display device is in a fully folded state, the main bending portion, the edge portion of the first transition bending portion close to the second transition bending portion, and the edge portion of the second transition bending portion close to the first transition bending portion are all accommodated in the accommodating groove.

[0037] In an embodiment of the present application, a display device and a display terminal are provided, wherein the display device comprises: a display panel, comprising a first non-bending portion and a second non-bending portion, and a bending portion located between the first non-bending portion and the second non-bending portion; a spacing layer, which is arranged on the non-display side of the display panel; a supporting layer, which is arranged on the side of the spacing layer away from the display panel, and the spacing layer and the supporting layer are arranged in affixed manner; wherein the supporting layer comprises a first supporting portion and a second supporting portion, and the first supporting portion and the second supporting portion are arranged separately to form a spacing gap between the first supporting portion and the second supporting portion, and the spacing gap is arranged corresponding to the bending portion. In an embodiment of the present application, a spacing layer is arranged on the entire surface, and the spacing layer is used to support each film layer of the entire display device, which is conducive to the bending of the module, and at the same time, the flatness is high, so as to avoid the formation of initial marks when each film layer of the display device is attached; at the same time, the supporting layer comprises a first supporting portion and a second supporting portion, and the first supporting portion and the second supporting portion are arranged separately on both sides of a spacing gap, which reduces the thickness and mechanical strength of the bending portion, and the arrangement of the spacing gap corresponding to the bending portion makes the display device easy to bend, reduces the bending stress, and can reduce the occurrence of creases. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 A schematic diagram of a film stacking structure of a display device provided in an embodiment of the present application when it is flattened;

[0040] Figure 2 A schematic diagram of a display device provided in an embodiment of the present application in a fully folded state;

[0041] Figure 3 A schematic cross-sectional view of a portion of a film layer of a display device provided in an embodiment of the present application when it is flattened;

[0042] Figure 4 A schematic diagram of a cross-sectional structure of a display device provided in an embodiment of the present application in a fully folded state;

[0043] Figure 5 A schematic top view of a local area of ​​a support layer provided in an embodiment of the present application;

[0044] Figure 6 This is a schematic diagram of an enlarged local area of ​​a support layer provided in an embodiment of the present application;

[0045] Figure 7 A schematic diagram of a first adhesion layer and a support layer provided in an embodiment of the present application;

[0046] Figure 8 A schematic cross-sectional view of a display device 1000 provided in an embodiment of the present application at a bent portion of a pad;

[0047] Fig. 9 A schematic diagram of a display terminal in a flattened state provided by an embodiment of the present application;

[0048] Fig.10 A schematic diagram of a display terminal in a fully folded state provided by an embodiment of the present application;

[0049] Fig.11 A schematic cross-sectional view of a display terminal in a fully folded state provided by an embodiment of the present application;

[0050] Fig.12 A schematic diagram of a bending radius of a display device in the prior art when it is in a fully folded state;

[0051] Fig.13A schematic diagram of a bending radius of a display device in a fully folded state according to an embodiment of the present application;

[0052] Fig.14 A schematic diagram showing a comparison of stresses of each adhesive layer when a display device in the prior art and a display device in an embodiment of the present application are in a fully folded state;

[0053] Fig.15 Schematic diagram comparing the risk of film layer breakage when the display device in the prior art and the display device in the embodiment of the present application are in a fully folded state. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words such as "upper" and "lower" used generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0055] The embodiment of the present application provides a display device, comprising: a display panel, comprising a first non-bending portion and a second non-bending portion, and a bending portion located between the first non-bending portion and the second non-bending portion; a spacing layer, the entire surface of which is arranged on the non-display side of the display panel; a supporting layer, which is arranged on a side of the spacing layer away from the display panel, and the spacing layer and the supporting layer are arranged in contact with each other; wherein the supporting layer comprises a first supporting portion and a second supporting portion, and the first supporting portion and the second supporting portion are separately arranged to form a spacing gap between the first supporting portion and the second supporting portion, and the spacing gap is arranged corresponding to the bending portion. The embodiment of the present application also provides a display terminal including the aforementioned display device, which will be described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments.

[0056] Embodiment 1

[0057] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 1 A schematic diagram of a film stacking structure of a display device provided in an embodiment of the present application when it is flattened; Figure 2 A schematic diagram of a display device provided in an embodiment of the present application in a fully folded state; Figure 3A schematic cross-sectional view of a portion of a film layer of a display device provided in an embodiment of the present application when it is flattened; Figure 4 This is a schematic diagram of the cross-sectional structure of a display device provided in an embodiment of the present application in a fully folded state. Figure 3 for Figure 1 The cross-sectional diagram of the HK dotted line is shown in FIG. Figure 3 Only a part of the film layer structure of the display device is illustrated as an example. Figure 4 for Figure 2 The cross-sectional view of the dotted line in HJ is shown in Figure 1. Figure 4 Only a part of the film layer structure of the display device is illustrated as an example. Figure 1 The diagram of a film layer stacking of a display device is illustrated as an example, but does not limit the order, quantity, material, etc. of the film layer structure of the display device. The display panel 4 or the display device 1000 includes a bending portion FF3, the bending axis of the bending portion FF3 extends along a first direction X, and the second direction Y is perpendicular to the first direction.

[0058] The embodiment of the present application provides a display device 1000, which includes a display panel 4, a spacing layer 6 and a supporting layer 7. The display panel 4 includes a first non-bending portion FF1 and a second non-bending portion FF2, and a bending portion FF3 located between the first non-bending portion FF1 and the second non-bending portion FF2; the spacing layer 6 is entirely arranged on the non-display side of the display panel 4; the supporting layer 7 is arranged on a side of the spacing layer 6 away from the display panel 4, and the spacing layer 6 and the supporting layer 7 are arranged in contact with each other; wherein the supporting layer 7 includes a first supporting portion 71 and a second supporting portion 72, and the first supporting portion 71 and the second supporting portion 72 are separately arranged to form a spacing gap 73 between the first supporting portion 71 and the second supporting portion 72, and the spacing gap 73 is arranged corresponding to the bending portion.

[0059] Specifically, the first support portion 71 and the second support portion 72 are separately arranged on both sides of a spacing gap 73, the first support portion 71 is at least arranged corresponding to the first non-bending portion FF1, the second support portion 72 is at least arranged corresponding to the second non-bending portion FF2, and the spacing gap 73 corresponds to the setting of the bending portion FF3.

[0060] Specifically, the display panel 4 may be an organic light-emitting display panel, but is not limited thereto. When the display panel 4 is an organic light-emitting display panel, the display panel 4 may include a substrate, a light-emitting layer disposed on the substrate, and an encapsulation layer disposed on the light-emitting layer. The structure of the display panel 4 is not limited herein.

[0061] Specifically, the non-display side of the display panel 4 refers to the back side of the display panel, or the side opposite to the light emitting direction of the display panel 4 .

[0062] Specifically, the display panel 4 includes a first non-bending portion FF1 and a second non-bending portion FF2 , and the display panel 4 may also include two or more bending portions.

[0063] Specifically, the spacer layer 6 and the support layer 7 are stacked and laminated on the non-display side of the display panel 4 , and the support layer 7 is disposed on a side of the spacer layer 6 away from the display panel 4 .

[0064] Specifically, the entire spacer layer 6 is disposed on the non-display side of the display panel 4 , that is, the spacer layer 6 is disposed on the non-display side of the display panel 4 without being patterned.

[0065] Specifically, the support layer 7 includes a first support portion 71 and a second support portion 72, and the first support portion 71 and the second support portion 72 are separately arranged to form a spacing gap 73 between the first support portion 71 and the second support portion 72, and the spacing gap 73 is arranged corresponding to the bending portion. That is, the support layer 7 includes two parts, the first support portion 71 and the second support portion 72, the first support portion 71 and the second support portion 72 do not contact each other, and a spacing gap 73 is arranged between the first support portion 71 and the second support portion 72.

[0066] Specifically, the first support portion 71 is at least provided corresponding to the first non-bending portion FF1, the second support portion 72 is at least provided corresponding to the second non-bending portion FF2, and the spacing gap 73 is provided corresponding to the bending portion FF3. That is, the orthographic projection of the first support portion 71 on the display panel 4 covers the first non-bending portion FF1, the orthographic projection of the second support portion 72 on the display panel 4 covers the second non-bending portion FF2, and the orthographic projection of the spacing gap 73 on the display panel 4 at least partially overlaps with the bending portion FF3.

[0067] Specifically, the display panel 4 includes a first non-bending portion FF1 and a second non-bending portion FF2, and a bending portion FF3 located between the first non-bending portion FF1 and the second non-bending portion FF2. It is understandable that for the display device 1000, the display device 1000 may also include a first non-bending portion FF1 and a second non-bending portion FF2, and a bending portion FF3 located between the first non-bending portion FF1 and the second non-bending portion FF2; it is understandable that for the display device display terminal 2000 in the subsequent embodiments, in the display terminal 2000, the display terminal 2000 may also include a first non-bending portion FF1 and a second non-bending portion FF2, and a bending portion FF3 located between the first non-bending portion FF1 and the second non-bending portion FF2, which will not be repeated here.

[0068] In this embodiment, a spacer layer 6 is provided on a whole surface, and the spacer layer 6 is used to support the film layer of the entire display device 1000, which is beneficial to the bending of the display device. At the same time, the spacer layer 6 has a high flatness, so as to avoid the formation of an initial imprint when the various film layers of the display device 1000 are bonded together; at the same time, the supporting layer 7 includes a first supporting portion 71 and a second supporting portion 72, and the first supporting portion 71 and the second supporting portion 72 are separately arranged on both sides of a spacer gap 73, thereby reducing the thickness and mechanical strength of the bending portion. The setting of the spacer gap 73 corresponding to the bending portion FF3 makes the display device 1000 easy to bend, reduces the bending stress, and can reduce the occurrence of creases.

[0069] Embodiment 2

[0070] This embodiment is the same as or similar to the first embodiment, except that some features or implementations of the display device 1000 are further described.

[0071] In some embodiments, the thickness of the support layer 7 is greater than the thickness of the spacer layer 6 .

[0072] Specifically, Figure 3 As shown, the spacer layer 6 is used to support the film layer of the entire display device 1000 and participate in the bending at the bending portion. The thickness of the spacer layer 6 is relatively small, so that the spacer layer 6 can provide support for the film layer of the entire display device 1000 and can be bent. The thickness of the support layer 7 is increased. Since the area of ​​the bending portion FF3 is relatively small, the areas of the first non-bending portion FF1 and the second non-bending portion FF2 are relatively large, and the support layer 7 can provide sufficient support for the first non-bending portion FF1 and the second non-bending portion FF2. In addition, the thickness of the support layer 7 is relatively thick, and after the frame bending portion of the display panel 4 is bent to the non-display side of the display panel 4, it provides support for the frame bending portion, which will be described in detail later.

[0073] In some embodiments, when the display device 1000 is in a flat state, the width of the spacing gap 73 is smaller than the width of the bending portion FF3.

[0074] Specifically, Figure 3 As shown, the width of the spacing gap 73 is smaller than the width of the bending portion FF3. Here, the width of the spacing gap 73 and the width of the bending portion FF3 both refer to the width in the second direction Y.

[0075] Specifically, when the display device 1000 is in a flattened state, the width of the spacing gap 73 is smaller than the width of the bending portion FF3, so that the first support portion 71 corresponds to a partial area of ​​the first non-bending portion FF1 and the bending portion FF3, and the second support portion 72 corresponds to a partial area of ​​the second non-bending portion FF2 and the bending portion FF3. The first support portion 71 and the second support portion 72 corresponding to the partial areas of the bending portion FF3 both participate in the bending process or bending action of the display panel 4, shortening the width of the spacing gap 73. When the display device 1000 is in a flattened state, the first support portion 71 and the second support portion 72 provide a certain support function for the bending portion, which can avoid or improve the occurrence of folding marks.

[0076] Embodiment 3

[0077] This embodiment is the same as or similar to the second embodiment, except that some features or implementations of the display device 1000 are further described.

[0078] In some embodiments, the bending portion FF3 includes a first transition bending portion FF31, a main bending portion FF33 and a second transition bending portion FF32, and the main bending portion FF33 is located between the first transition bending portion FF31 and the second transition bending portion FF32; the first support portion 71 includes a first sub-support portion 711 and a second sub-support portion 712, and the second support portion 72 includes a third sub-support portion 721 and a fourth sub-support portion 722, the first sub-support portion 711 is arranged corresponding to the first non-bending portion FF1, the third sub-support portion 721 is arranged corresponding to the second non-bending portion FF2, the second sub-support portion 712 is arranged corresponding to the first transition bending portion FF31, and the fourth sub-support portion 722 is arranged corresponding to the second transition bending portion FF32, the second sub-support portion 712 and the fourth sub-support portion 722 both include a plurality of hollow holes 701, and the spacing gap 73 is arranged corresponding to the main bending portion FF33.

[0079] Specifically, the second sub-support portion 712 and the fourth sub-support portion 722 each include a plurality of hollow holes 701 , that is, the second sub-support portion 712 and the fourth sub-support portion 722 are arranged in a grid shape.

[0080] Specifically, the bending portion FF3 includes a first transition bending portion FF31, a main bending portion FF33, and a second transition bending portion FF32. When the display panel 4 or the display device 1000 is bent, the main bending portion FF33 is the bending center, and the first transition bending portion FF31 and the second transition bending portion FF32 are located on both sides of the main bending portion FF33. During the bending or folding process of the display panel 4 or the display device 1000, the first transition bending portion FF31 allows the display panel 4 to transition gently or smoothly from the first non-bending portion FF1 to the main bending portion FF33, and the second transition bending portion FF32 allows the display panel 4 to transition gently or smoothly from the second non-bending portion FF2 to the main bending portion FF33, thereby preventing the display panel 4 from breaking or creases.

[0081] Specifically, the first support portion 71 includes a first sub-support portion 711 and a second sub-support portion 712 , and the first sub-support portion 711 and the second sub-support portion 712 are connected to each other as a whole.

[0082] Specifically, the second supporting portion 72 includes a third sub-supporting portion 721 and a fourth sub-supporting portion 722 , and the third sub-supporting portion 721 and the fourth sub-supporting portion 722 are connected to each other as a whole.

[0083] Specifically, the first sub-support portion 711 is arranged corresponding to the first non-bending portion FF1, the third sub-support portion 721 is arranged corresponding to the second non-bending portion FF2, the second sub-support portion 712 is arranged corresponding to the first transition bending portion FF31, and the fourth sub-support portion 722 is arranged corresponding to the second transition bending portion FF32. The orthographic projection of the first sub-support portion 711 on the display panel 4 overlaps with the first non-bending portion FF1, the orthographic projection of the third sub-support portion 721 on the display panel 4 overlaps with the second non-bending portion FF2, the orthographic projection of the second sub-support portion 712 on the display panel 4 overlaps with the first transition bending portion FF31, and the orthographic projection of the fourth sub-support portion 722 on the display panel 4 overlaps with the second transition bending portion FF32.

[0084] Specifically, the spacing gap 73 is arranged corresponding to the main bending portion FF33 , and the orthographic projection of the spacing gap 73 on the display panel 4 overlaps with the main bending portion FF33 .

[0085] Specifically, the second sub-support portion 712 and the fourth sub-support portion 722 each include a plurality of hollow holes 701 , and the hollow holes 701 can reduce the bending stiffness and mechanical strength of the second sub-support portion 712 and the fourth sub-support portion 722 , thereby improving the bendability of the display device 1000 .

[0086] Specifically, the second sub-support portion 712 participates in the bending of the first transition bending portion FF31, and the second sub-support portion 712 also provides support for the first transition bending portion FF31, thereby reducing the folding mark; the fourth sub-support portion 722 participates in the bending of the second transition bending portion FF32, and the fourth sub-support portion 722 also provides support for the second transition bending portion FF32, thereby reducing the folding mark. There is a gap 73 between the second sub-support portion 712 and the fourth sub-support portion 722, thereby reducing the folding mark.

[0087] In some embodiments, when the display device 1000 is in a flat state, the width of the spacing gap 73 is equal to the width of the main bending portion FF33.

[0088] Specifically, when the display device 1000 is in a flattened state, the width of the spacing gap 73 in the second direction Y is equal to the width of the bending portion FF3 in the second direction Y, so that the spacing gap 73 just overlaps with the main bending portion of the display panel 4, so that the supporting effect of the second sub-support portion 712 and the fourth sub-support portion 722 is optimal, and the bending effect of the spacing gap 73 is optimized.

[0089] In some embodiments, the elastic modulus of the spacer layer 6 is greater than the elastic modulus of the support layer 7 .

[0090] Specifically, the spacing layer 6 may be a rigid supporting layer, the supporting layer 7 may be a rigid supporting layer or an elastic supporting layer, and the supporting layer 7 may be thicker.

[0091] Specifically, the elastic modulus of the spacer layer 6 is greater than the elastic modulus of the support layer 7. The spacer layer 6 provides full-surface support and plays a major supporting role. The support layer 7 plays an auxiliary supporting role in the corresponding area. The elastic modulus of the second sub-support portion 712 and the fourth sub-support portion 722 is relatively small, which provides a certain buffering effect for the first transition bend portion FF31 and the second transition bend portion FF32.

[0092] Embodiment 4

[0093] This embodiment is the same as or similar to the third embodiment, except that some features or implementations of the display device 1000 are further described, especially multiple settings of the hollow holes 701 .

[0094] See also Figure 5 , Figure 6 , Figure 5 A schematic top view of a local area of ​​a support layer provided in an embodiment of the present application; Figure 6 This is a schematic diagram of an enlarged local area of ​​a support layer provided in an embodiment of the present application. Figure 6 for Figure 5 The enlarged schematic diagram of the dotted line box 702 area, Figure 6The shape of the hollow hole 701 is schematically illustrated in an enlarged manner.

[0095] In some embodiments, the bending axis of the bending portion FF3 extends in the first direction X; the length of the multiple hollow holes 701 in the first direction X is greater than the length in the second direction Y, and the second direction Y is perpendicular to the first direction X; the multiple hollow holes 701 of the second sub-support portion 712 and the multiple hollow holes 701 of the fourth sub-support portion 722 are staggered in the second direction Y.

[0096] Specifically, Figure 1 and Figure 3 As shown, the display panel 4 or the display device 1000 includes a bending portion FF3, a bending axis of the bending portion FF3 extends along a first direction X, and a second direction Y is perpendicular to the first direction.

[0097] Specifically, the length of the plurality of hollow holes 701 in the first direction X is greater than the length in the second direction Y, which can reduce the bending stress of the second sub-support portion 712 and the fourth sub-support portion 722 in the second direction and reduce the crease.

[0098] Specifically, the multiple hollow holes 701 of the second sub-support portion 712 and the multiple hollow holes 701 of the fourth sub-support portion 722 are staggered in the second direction Y, which can reduce the bending stress of the second sub-support portion 712 and the fourth sub-support portion 722 in the second direction and reduce creases. At the same time, after the display device 1000 is repeatedly folded, the staggered blocking of the hollow holes 701 can prevent the cracks in the second sub-support portion 712 and the fourth sub-support portion 722 from spreading and the second sub-support portion 712 and the fourth sub-support portion 722 from breaking.

[0099] In some embodiments, the hollow density of the multiple hollow holes 701 of the second sub-support portion 712 gradually increases along the second direction Y close to the main bending portion FF33; the hollow density of the multiple hollow holes 701 of the fourth sub-support portion 722 gradually increases along the second direction Y close to the main bending portion FF3. Specifically, during the folding process of the display panel 4 or the display device 1000, the closer to the main bending portion FF3, the greater the bending angle, the greater the bending degree, the greater the bending stress or folding stress, the hollow density of the multiple hollow holes 701 of the second sub-support portion 712 gradually increases along the second direction Y close to the main bending portion FF33, and the hollow density of the multiple hollow holes 701 of the fourth sub-support portion 722 gradually increases along the second direction Y close to the main bending portion FF3, which can reduce the bending strength and mechanical strength of the second sub-support portion 712 and the fourth sub-support portion 722 in the direction close to the main bending portion FF3, provide good bending performance, easier bending, and reduce the occurrence of creases.

[0100] Specifically, further, by designing the size design and arrangement of the grid of the hollow holes 701, or it can be understood that according to the specific curvature or curvature value when the display device 1000 is bent, a gradual graphic structure is designed to adjust the bending modulus of the support layer 7 corresponding to the first transition bending zone FF31 and the second transition bending zone FF32, thereby controlling the bending stiffness of the second sub-support portion 712 and the fourth sub-support portion 722 of the support layer 7, and then controlling or coordinating the bending shape or curvature of the display device 1000, thereby improving the crease and reducing the risk of interlayer debonding in the transition bending arc section of the display device 1000 with a teardrop-shaped bending shape; at the same time, in the display terminal 2000 in the subsequent embodiments, the support layer 7 blocks the hard contact stress of the adhesive bonding surface between the middle frame shell 1 of the display terminal 2000 and the bending part of the display device 1000, thereby reducing the probability of imprinting.

[0101] Specifically, the larger the length of a single hollow hole 701 in the first direction X, the smaller the equivalent tensile modulus, the larger the spacing between adjacent hollow holes 701, the larger the modulus, and the correspondingly larger the bending stiffness; in this way, the bending stiffness of the support layer 7 participating in the bending portion FF3 is gradually reduced, thereby alleviating the problem of marks caused when the second layer of support layer 7 is bonded to the middle frame shell 1 or after long-term bending fatigue, and at the same time, the teardrop-shaped bending shape of the display device 1000 can also be controlled.

[0102] In some embodiments, in the second direction Y, the widths of the multiple hollow holes 701 are the same; the lengths of the multiple hollow holes 701 of the second sub-support portion 712 in the first direction X gradually increase along the second direction Y close to the main bending portion FF33, and the lengths of the multiple hollow holes 701 of the fourth sub-support portion 722 in the first direction X gradually increase along the second direction Y close to the main bending portion FF33.

[0103] Specifically, the length of the multiple hollow holes 701 of the second sub-support portion 712 in the first direction X gradually increases along the second direction Y close to the main bending portion FF33, so that the solid density of the second sub-support portion 712 along the second direction Y close to the main bending portion FF33 is reduced; the length of the multiple hollow holes 701 of the fourth sub-support portion 722 in the first direction X gradually increases along the second direction Y close to the main bending portion FF33, so that the solid density of the fourth sub-support portion 722 along the second direction Y close to the main bending portion FF33 is reduced, which can reduce the bending strength and mechanical strength of the second sub-support portion 712 and the fourth sub-support portion 722 in the direction close to the main bending portion FF3, provide good bending performance, make it easier to bend, and reduce the occurrence of creases.

[0104] In some embodiments, the length of any hollow hole 701 in the first direction X is a first length value, the spacing between any hollow hole 701 and the hollow hole 701 adjacent to it on any side in the first direction X is a second length value, and the sum of the first length value of the hollow hole 701 and the corresponding second length value is a fixed value K0.

[0105] Specifically, Figure 6 As shown, the plurality of hollow holes 701 include a first hollow hole 7011, a second hollow hole 7012, and a third hollow hole 7013. The first length value of the first hollow hole 7011 is K1, the second length value corresponding to the first hollow hole is K2, and the sum of K1 and K2 is a fixed value K0; the first length value of the second hollow hole 7012 is K3, the second length value corresponding to the second hollow hole 7012 is K4, and the sum of K3 and K4 is a fixed value K0; the first length value of the third hollow hole 7013 is K5, the second length value corresponding to the third hollow hole 7013 is K6, and the sum of K5 and K6 is a fixed value K0.

[0106] Specifically, the sum of the first length value of the hollow hole 701 and the corresponding second length value is a fixed value K0, which can make the second sub-support portion 712 and the fourth sub-support portion 722 have a uniform gradual change in solid density, hollow density, and bending stiffness in the direction close to the main bending portion FF3, and conform to and match the stress change law of the bending portion FF3 when bending, which can reduce creases and facilitate bending and folding. In some embodiments, the surface of the support layer 7 away from the spacer layer 6 is a centrally symmetrical structure.

[0107] Specifically, when the display panel 4 is at the bending portion FF3, or when the display panel 4 is bent, the bending stress is distributed centrally and symmetrically, and the surface of the support layer 7 away from the spacing layer 6 has a centrally symmetrical structure, so that the solid density, hollow density, and bending stiffness of the support layer 7 can better conform to and match the stress change law of the bending portion FF3 when it is bent, which can reduce creases and facilitate bending and folding.

[0108] Embodiment 5

[0109] This embodiment is the same as or similar to the display device 1000 in any of the above embodiments, except that some features or implementations of the display device 1000 are further described.

[0110] See also Figure 7 , Figure 8 , Figure 7 A schematic diagram of a first adhesion layer and a support layer provided in an embodiment of the present application; Figure 8 A schematic cross-sectional view of a display device 1000 at a bending portion of a pad provided in an embodiment of the present application.

[0111] In some embodiments, the display device 1000 also includes a first adhesive layer 211, the first adhesive layer 211 includes a first adhesive portion 2111 and a second adhesive portion 2112, the first support portion 71 is adhered to the spacing layer 6 through the first adhesive portion 2111, the second support portion 72 is adhered to the spacing layer 6 through the second adhesive portion 2112, and the first adhesive portion 2111 and the second adhesive portion 2112 are separated and arranged corresponding to the spacing gap 73; the first adhesive portion 2111 and the second adhesive portion 2112 are both non-hollow arrangements.

[0112] Specifically, the first adhesive layer 211 may be an optical adhesive layer (OCR, OCA), etc., which is not limited herein.

[0113] Specifically, the first adhesive portion 2111 and the second adhesive portion 2112 are separately arranged corresponding to the spacing gap 73. It can be understood that the spacing gap 73 penetrates the first adhesive layer 211, and the first adhesive portion 2111 and the second adhesive portion 2112 are distributed on both sides of the spacing gap 73 and are separately arranged.

[0114] Specifically, the first adhesive portion 2111 and the second adhesive portion 2112 are both non-hollow settings, which can provide a good attachment plane for the support layer 7, so that the surface of the support layer 7 close to the spacing layer 6 is in the same plane, which helps to maintain the flatness of the display panel 4.

[0115] In some embodiments, the material of the spacer layer 6 and the material of the support layer 7 respectively include at least one of stainless steel, carbon fiber, titanium alloy, magnesium aluminum alloy, nickel alloy, polyester fiber and acrylic.

[0116] Specifically, the material of the spacer layer 6 and the material of the support layer 7 may be the same or different. The material of the spacer layer 6 and the material of the support layer 7 may respectively include at least one of stainless steel, carbon fiber, titanium alloy, magnesium-aluminum alloy, nickel alloy, polyester fiber and acrylic. The material of the spacer layer 6 and the material of the support layer 7 may also be other suitable materials, which are not limited here.

[0117] See also Figure 8 The display device 1000 includes a pad bending portion BB1, and a pad terminal (not shown in the figure) is arranged on the pad bending portion BB1. The pad terminal is used to connect with a flexible circuit board, a driving chip, etc. The pad bending portion BB1 is bent to the non-display side of the display panel or the display device, which can reduce the frame. The pad bending portion BB1 can be any setting in the prior art, and the pad bending portion BB1 will not be described here.

[0118] like Figure 8As shown, the pad bending portion BB1 is bent to the non-display side of the display panel 4 or the display device 1000, and is fixedly arranged on the non-display side of the display panel 4 or the display device 1000 by attachment, bonding, etc. The function of the supporting layer 7, especially when the thickness of the supporting layer 7 is thicker, also includes: blocking or reducing the risk of stress marks on the first layer of the supporting layer 7 caused by excessive compressive stress during the bending and fixing process of the pad bending portion BB1.

[0119] In some embodiments, the display device 1000 also includes a back panel layer 31 and a foam layer 32, the back panel layer 31 is arranged between the spacer layer 6 and the display panel 4; the foam layer 32 is arranged between the back panel layer 31 and the spacer layer 6; and two adjacent ones of the display panel 4, the back panel layer 31, the foam layer 32, the spacer layer 6 and the support layer 7 are arranged in a bonded manner.

[0120] Specifically, the display device 1000 further includes a back panel layer 31 and a foam layer 32 . The back panel layer 31 , the foam layer 32 , the spacing layer 6 and the supporting layer 7 provide complete support, buffering, folding and other performance support for the display panel 4 or the display device 1000 .

[0121] Furthermore, the spacer layer 6 is a metal thin plate or a polymer composite material plate with high flatness.

[0122] Furthermore, during the manufacturing process of the display device 1000 , the spacer layer 6 and the support layer 7 are firstly bonded into a whole, and then the whole of the spacer layer 6 and the support layer 7 is bonded to the non-display side of the display panel 4 .

[0123] like Figure 1 and Figure 8 As shown, a stacked structure of the display device 1000 is illustrated as an example. Figure 1 and Figure 8 middle, Figure 1 and Figure 8 The display device 1000 includes: a support layer 7, a spacer layer 6, a foam layer 32, a back panel layer 31, a display panel 4, a polarizer 41, and a cover glass 42 (Cover glass, CG) which are stacked in sequence. Adjacent stacked structures can be bonded together by an adhesive layer 21. The adhesive layer 21 includes a first adhesive layer 211. The display device 1000 can also be arranged with other stacked structures. For example, the display device 1000 may not include the polarizer 41.

[0124] Embodiment 6

[0125] This embodiment provides a display terminal 2000 , and the display terminal 2000 includes the display device 1000 of any one of the above embodiments.

[0126] See also Fig. 9 , Fig.10 , Fig.11, Fig. 9 A schematic diagram of a display terminal in a flattened state provided by an embodiment of the present application; Fig.10 A schematic diagram of a display terminal in a fully folded state provided by an embodiment of the present application; Fig.11 A cross-sectional schematic diagram of a display terminal in a fully folded state provided by an embodiment of the present application. Fig.11 for Fig.10 The cross-sectional view of the dotted line in HQ is shown in the figure. Fig.11 The bending axis or folding axis of the display terminal 2000 is the same as that of the display panel 4 or the display device 1000, and the bending axis or folding axis of the display terminal 2000 extends along the first direction X, and the second direction Y is perpendicular to the first direction.

[0127] The embodiment of the present application provides a display terminal 2000, which includes the display device 1000 of any one of the above embodiments, as well as a middle frame housing 1 and a rotating mechanism 3. The middle frame housing 1 is arranged on the side of the support layer 7 away from the display panel 4, and the middle frame housing 1 includes a first middle frame 11 and a second middle frame 12, the first middle frame 11 is arranged at least corresponding to the first non-bending portion FF1, and the second middle frame 12 is arranged at least corresponding to the second non-bending portion FF2. When the display device 1000 is in a flattened state, the first middle frame 11 and the second middle frame 12 are in contact with the bending portion FF3 corresponding to the bending portion; the rotating mechanism 3 is accommodated in the middle frame housing 1 and connected to the first middle frame housing 11 and the second middle frame 12. When the display device 1000 is in a flattened state, the rotating mechanism 3 is arranged between the bending portion FF3 of the display panel 4 and the middle frame housing 1.

[0128] Specifically, the middle frame shell 1 is arranged on the side of the supporting layer 7 away from the display panel 4, which means that the main part of the middle frame shell 1 is arranged on the side of the supporting layer 7 away from the display panel 4. When the middle frame shell 1 includes a containing structure, the display panel 4 or the display device 1000 can be at least partially contained in the middle frame shell 1.

[0129] Specifically, the rotating mechanism 3 is used to enable the display device 1000 or the display terminal 2000 to be bent or folded.

[0130] Specifically, when the display panel, the display device 1000, or the display terminal 2000 is in a flattened state, it means that the display panel, the display device 1000, or the display terminal 2000 is in a non-bent state. When the display panel, the display device 1000, or the display terminal 2000 is in a fully folded state, it means that the display panel, the display device 1000, or the display terminal 2000 is in a maximum bending state or a folded state, and the maximum bending or folding angle of the display panel, the display device 1000, or the display terminal 2000 may be 180 degrees.

[0131] Specifically, when the display device 1000 is in a flattened state, the corresponding bending portions FF3 of the first middle frame 11 and the second middle frame 12 abut against each other, so that there is no gap between the first middle frame 11 and the second middle frame 12, thereby preventing external dust, foreign objects, particles, etc. from entering, thereby playing a role and effect of protecting the display device 1000.

[0132] Specifically, when the display device 1000 is in a flattened state, the first middle frame 11 and the second middle frame 12 correspond to the bending portion FF3 abut against each other; at this time, the first middle frame 11 corresponds to the first non-bending portion FF1, the first transition bending portion FF31, and a partial area of ​​the main bending portion FF33; the second middle frame 12 corresponds to the second non-bending portion FF2, the second transition bending portion FF32, and a partial area of ​​the main bending portion FF33.

[0133] Specifically, the rotating mechanism 3 is accommodated in the middle frame shell 1 and is connected to the first middle frame shell 11 and the second middle frame 12. When the display device 1000 is in a flattened state, the rotating mechanism 3 is arranged between the bending portion FF3 of the display panel and the middle frame shell 1. The rotating mechanism 3 can be basically or completely arranged corresponding to the bending portion FF3.

[0134] Specifically, the rotating mechanism 3 can be any mechanism or device such as a rotating hinge in the prior art, which is not limited here.

[0135] In some embodiments, the bending portion FF3 includes a first transition bending portion FF31, a main bending portion FF33 and a second transition bending portion FF32, and the main bending portion FF33 is located between the first transition bending portion FF31 and the second transition bending portion FF32; the rotating mechanism 3 includes a hinge mounting base 301, and the hinge mounting base 301 includes an arc-shaped accommodating groove 3011. When the display device 1000 is in a fully folded state, the main bending portion FF33, the edge portion of the first transition bending portion FF31 close to the second transition bending portion FF32 and the edge portion of the second transition bending portion FF32 close to the first transition bending portion FF31 are all accommodated in the accommodating groove 3011.

[0136] Specifically, Fig.11As shown, the rotating mechanism 3 includes a hinge mounting base 301, and the hinge mounting base 301 includes an arc-shaped receiving groove 3011. When the display device 1000 is in a fully folded state, the main bending portion FF33, the edge portion of the first transition bending portion FF31 close to the second transition bending portion FF32, and the edge portion of the second transition bending portion FF32 close to the first transition bending portion FF31 are all received in the receiving groove 3011. The hinge mounting base 301 can protect the main bending portion FF33. For example, when the display terminal falls or falls to the ground, the edge portion of the first transition bending portion FF31 close to the second transition bending portion FF32 and the edge portion of the second transition bending portion FF32 close to the first transition bending portion FF31 are all received in the receiving groove 3011. 2's edge portions close to the first transition bend portion FF31 are all accommodated in the accommodating groove 3011, so that the accommodating groove 3011 of the hinge mounting base 301 contacts the edge portion of the first transition bend portion FF31 close to the second transition bend portion FF32 and the edge portion of the second transition bend portion FF32 close to the first transition bend portion FF31, and the accommodating groove 3011 of the hinge mounting base 301 will not contact the portion of the main bend portion FF33 adjacent to the first transition bend portion FF31 and the portion of the main bend portion FF33 adjacent to the second transition bend portion FF32, thereby avoiding damage to the main bend portion FF33 in the event of falling or falling, thereby protecting the main bend portion FF33.

[0137] Please note that Fig.12 , Fig.13 , Fig.14 , Fig.15 , Fig.12 A schematic diagram of a bending radius of a display device in the prior art when it is in a fully folded state; Fig.13 A schematic diagram of a bending radius of a display device in a fully folded state according to an embodiment of the present application; Fig.14 A schematic diagram showing a comparison of stresses of each adhesive layer when a display device in the prior art and a display device in an embodiment of the present application are in a fully folded state; Fig.15 Schematic diagram comparing the risk of fracture of each film layer when the display device in the prior art and the display device in the embodiment of the present application are in a fully folded state. Fig.12 , Fig.13 , Fig.14 , Fig.15 All are obtained through simulation software. Fig.12 and Fig.13 , the first transition bend FF31 and the second transition bend FF32 of the display device in the embodiment of the present application are improved. After being optimized in the embodiment of the present application, the first transition bend FF31 and the second transition bend FF32 are smoother. Fig.12 and Fig.13The first bending radius R1 value of the first transition bending portion FF31 and the second transition bending portion FF32 marked in the figure becomes larger, thereby avoiding the existence of the sharp bending angle of the main bending portion FF33, that is, the second bending radius R2 value of the main bending portion FF33 also becomes larger or flatter, and the stress state of the main bending portion FF33 is effectively alleviated, and the curvature is more continuous. Through the setting of the embodiment of the present application, the risk of peeling, breaking and cracking of each film layer material of the main bending portion FF33 is effectively reduced.

[0138] Please refer to Fig.14 and Fig.15 , Fig.14 The middle horizontal axis represents each adhesive layer in the display device (each adhesive layer OCA1, OCA2, OCA3, OCA4, OCA5, OCA6 corresponds to Figure 1 A plurality of adhesive layers 21), Fig.14 The vertical axis represents the stress (Pressure). Fig.15 The middle vertical axis represents the risk of film fracture in the display device (Longitidunalstrain). Fig.14 and Fig.15 Compared with the first display device in the prior art ( Fig.14 and Fig.15 Initial design item in the embodiment of the present application), the display device ( Fig.14 and Fig.15 Optimal design item in the prior art) and the second display device in the prior art ( Fig.14 and Fig.15 The reference value item in corresponds to Fig.12 structure); from Fig.14 It can be seen from the figure that the stress on each adhesive layer in the display device in the embodiment of the present application is reduced and improved; Fig.15 It can be seen that the stress value of peeling of each adhesive layer in the display device in the embodiment of the present application is also significantly reduced, and the risk of film breakage of the display device 1000 is significantly reduced.

[0139] The above is a detailed introduction to a display device and a display terminal provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A display device, It is characterized in that include: The display panel comprises a first non-bending portion and a second non-bending portion, and a bending portion located between the first non-bending portion and the second non-bending portion; A spacer layer is entirely disposed on the non-display side of the display panel, and the spacer layer is non-patterned; the spacer layer is a metal sheet or a polymer composite material sheet with high flatness; A support layer is arranged on a side of the spacing layer away from the display panel, and the spacing layer and the support layer are laminated together; The support layer includes a first support portion and a second support portion, the first support portion and the second support portion are separately arranged to form a spacing gap between the first support portion and the second support portion, and the spacing gap is arranged corresponding to the bending portion; The elastic modulus of the spacer layer is greater than the elastic modulus of the support layer. The spacer layer is a rigid support layer. The material of the spacer layer includes at least one of stainless steel, carbon fiber, titanium alloy, magnesium aluminum alloy, nickel alloy, polyester fiber and acrylic.

2. The display device according to claim 1, It is characterized in that The thickness of the support layer is greater than the thickness of the spacing layer.

3. The display device according to claim 1 or 2, It is characterized in that When the display device is in a flattened state, the width of the spacing gap is smaller than the width of the bent portion.

4. The display device according to claim 3, It is characterized in that The bending portion includes a first transition bending portion, a main bending portion, and a second transition bending portion, wherein the main bending portion is located between the first transition bending portion and the second transition bending portion; The first support portion includes a first sub-support portion and a second sub-support portion, the second support portion includes a third sub-support portion and a fourth sub-support portion, the first sub-support portion is arranged corresponding to the first non-bending portion, the third sub-support portion is arranged corresponding to the second non-bending portion, the second sub-support portion is arranged corresponding to the first transition bending portion, and the fourth sub-support portion is arranged corresponding to the second transition bending portion, the second sub-support portion and the fourth sub-support portion each include a plurality of hollow holes, and the spacing gap is arranged corresponding to the main bending portion.

5. The display device according to claim 4, It is characterized in that When the display device is in a flattened state, the width of the spacing gap is equal to the width of the main bending portion.

6. The display device according to claim 4, It is characterized in that The bending axis of the bending portion extends in a first direction; The length of the plurality of hollow holes in the first direction is greater than the length in the second direction, and the second direction is perpendicular to the first direction; In the second direction, the plurality of hollow holes of the second sub-support portion are staggered and distributed, and the plurality of hollow holes of the fourth sub-support portion are staggered and distributed.

7. The display device according to claim 6, It is characterized in that In the second direction, the center of at least one column of the hollow holes is located on the extension line of the center line of any hollow hole in the column.

8. The display device according to claim 6, It is characterized in that The hollow density of the plurality of hollow holes of the second sub-support portion gradually increases along the second direction close to the main bending portion; the hollow density of the plurality of hollow holes of the fourth sub-support portion gradually increases along the second direction close to the main bending portion.

9. The display device according to claim 8, It is characterized in that In the second direction, the widths of the plurality of hollow holes are the same; The lengths of the plurality of hollow holes of the second sub-support portion in the first direction gradually increase along the second direction close to the main bending portion, and the lengths of the plurality of hollow holes of the fourth sub-support portion in the first direction gradually increase along the second direction close to the main bending portion.

10. The display device according to claim 9, It is characterized in that The length of any of the hollow holes in the first direction is a first length value, the spacing between any of the hollow holes and the hollow holes adjacent to it on any side in the first direction is a second length value, and the sum of the first length value of the hollow hole and the corresponding second length value is a fixed value.

11. The display device according to claim 9, It is characterized in that In the first direction, the length of the hollow holes is greater than the spacing between any adjacent hollow holes, that is, the first length value is greater than or equal to the second length value.

12. The display device according to claim 4, It is characterized in that The surface of the support layer away from the spacing layer presents a central symmetrical structure.

13. The display device according to claim 4, It is characterized in that The first adhesive layer includes a first adhesive portion and a second adhesive portion, the first supporting portion is attached to the spacing layer through the first adhesive portion, the second supporting portion is attached to the spacing layer through the second adhesive portion, and the first adhesive portion and the second adhesive portion are separated and arranged corresponding to the spacing gap; The first adhesive portion and the second adhesive portion are both non-hollowed out.

14. The display device according to claim 1, It is characterized in that Also includes: A backplane layer, disposed between the spacer layer and the display panel; A foam layer, disposed between the back plate layer and the spacer layer; The display panel, the back plate layer, the foam layer, the spacing layer and two adjacent ones of the support layer are arranged in contact with each other.

15. A display terminal, It is characterized in that The device comprises the display device according to any one of claims 1 to 14, and: A middle frame housing, the middle frame housing being arranged on a side of the support layer away from the display panel, the middle frame housing comprising a first middle frame and a second middle frame, the first middle frame being arranged at least corresponding to the first non-bending portion, the second middle frame being arranged at least corresponding to the second non-bending portion, and when the display device is in a flattened state, the first middle frame and the second middle frame are in contact at a position corresponding to the bending portion; The rotating mechanism is accommodated in the middle frame shell and connected to the first middle frame shell and the second middle frame. When the display device is in a flat state, the rotating mechanism is arranged between the bent portion of the display panel and the middle frame shell.

16. The display terminal according to claim 15, It is characterized in that The bending portion includes a first transition bending portion, a main bending portion, and a second transition bending portion, wherein the main bending portion is located between the first transition bending portion and the second transition bending portion; The rotating mechanism includes a hinge mounting base, and the hinge mounting base includes an arc-shaped accommodating groove. When the display device is in a fully folded state, the main bending portion, the edge portion of the first transition bending portion close to the second transition bending portion, and the edge portion of the second transition bending portion close to the first transition bending portion are all accommodated in the accommodating groove.

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