Display device and display terminal

Abstract

The embodiment of the application discloses a display device and a display terminal, the display device comprises a display panel, a first non-bending part and a second non-bending part, and a bending part between the first non-bending part and the second non-bending part; a spacing layer is provided on the non-display side of the display panel; a supporting layer is provided on the side of the spacing layer away from the display panel; wherein the supporting layer comprises a first supporting part and a second supporting part, the first supporting part and the second supporting part are separately provided to form a spacing gap between the first supporting part and the second supporting part, and the spacing gap corresponds to the bending part. In the embodiment of the application, the spacing layer is used for supporting each film layer of the entire display device, and the flatness is high, so that initial marks are avoided when each film layer of the display device is attached; the first supporting part and the second supporting part are separately provided on both sides of a spacing gap, the thickness of the bending part is reduced, and the spacing gap makes the display device easy to bend, and the occurrence of creases can be reduced.

Description

[0001] This application is a divisional application of application number 202210810409.4 filed on July 11, 2022, entitled "A display device and display terminal". Technical Field

[0002] This application relates to the field of displays, specifically to a display device and a display terminal. Background Technology

[0003] Flexible display devices, such as flexible organic light-emitting diodes (OLEDs), are already widely used in daily life. Foldable OLEDs have been developed, for example, they are used in foldable mobile phones.

[0004] However, in foldable display devices, after repeated folding and unfolding, creases and marks are prone to appear. Creases occur because the film layer of the folding device undergoes fatigue bending after repeated folding, resulting in irreversible plastic deformation of the material. Marks are caused by the thinness of the foldable display device itself and insufficient support rigidity, which easily leads to local stress concentration in the area where the non-bending part and the bending part meet the rigid surface of the mid-frame structure of the terminal such as mobile phone. After repeated bending, the stress concentration reaches a certain level, and the upper material of the foldable display device will also deform and be damaged, forming visible strip marks. There is still no good solution to the problem of creases and marks in foldable display devices. Summary of the Invention

[0005] This application provides a display device and display terminal that can solve the problem of simultaneous creases and imprints.

[0006] This application provides a display device, including:

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

[0008] A spacer layer is disposed on the non-display side of the display panel.

[0009] A support layer is disposed on the side of the spacer layer away from the display panel, and the spacer layer is attached to the support layer;

[0010] The support layer includes a first support portion and a second support portion, which are separately disposed to form a gap between the first support portion and the second support portion, and the gap is provided corresponding to the bending portion.

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

[0012] Optionally, in some embodiments of this application, when the display device is in a flattened state, the width of the gap is smaller than the width of the bend.

[0013] Optionally, in some embodiments of this application, 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;

[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 disposed corresponding to the first non-bending portion. The third sub-support portion is disposed corresponding to the second non-bending portion. The second sub-support portion is disposed corresponding to the first transition bending portion. The fourth sub-support portion is disposed corresponding to the second transition bending portion. Both the second sub-support portion and the fourth sub-support portion include multiple hollow holes. The interval gap is disposed corresponding to the main bending portion.

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

[0016] Optionally, in some embodiments of this application, the elastic modulus of the spacer layer is greater than that of the support layer.

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

[0018] The length of the plurality of said 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 in the second sub-support and the plurality of hollow holes in the fourth sub-support are all staggered in the second direction.

[0020] Optionally, in some embodiments of this application, the perforation density of the plurality of perforated holes in the second sub-support gradually increases along the second direction towards the main bending portion; the perforation density of the plurality of perforated holes in the fourth sub-support gradually increases along the second direction towards the main bending portion.

[0021] Optionally, in some embodiments of this application, the width of the plurality of cutouts is the same in the second direction;

[0022] The length of the plurality of hollow holes in the second sub-support part gradually increases in the first direction as it approaches the main bending part along the second direction, and the length of the plurality of hollow holes in the fourth sub-support part gradually increases in the first direction as it approaches the main bending part along the second direction.

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

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

[0025] Optionally, in some embodiments of this application, a first adhesive layer is further included. The first adhesive layer includes a first adhesive portion and a second adhesive portion. The first support portion is attached to the spacer layer through the first adhesive portion, and the second support portion is attached to the spacer layer through the second adhesive portion. The first adhesive portion and the second adhesive portion are separately disposed corresponding to the spacer gap.

[0026] Both the first adhesive portion and the second adhesive portion are non-perforated.

[0027] Optionally, in some embodiments of this application, the materials of the spacer layer and 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 this application, it further includes:

[0029] A back panel layer is disposed between the spacer layer and the display panel;

[0030] A foam layer is disposed between the backing layer and the spacer layer;

[0031] The display panel, the back panel layer, the foam layer, the spacer layer, and the support layer are arranged in pairs that are bonded together.

[0032] Accordingly, embodiments of this application also provide a display terminal, including the display device described in any of the above claims, and:

[0033] A mid-frame housing is disposed on the side of the support layer away from the display panel. The mid-frame housing includes a first mid-frame and a second mid-frame. The first mid-frame is disposed at least corresponding to the first non-bending portion, and the second mid-frame is disposed at least corresponding to the second non-bending portion. When the display device is in a flattened state, the first mid-frame and the second mid-frame abut against each other at the corresponding bending portion.

[0034] A rotating mechanism is housed in the middle frame housing and connected to the first middle frame housing and the second middle frame. When the display device is in a flattened state, the rotating mechanism is disposed between the bent portion of the display panel and the middle frame housing.

[0035] Optionally, in some embodiments of this application, 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;

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

[0037] This application provides a display device and a display terminal. The display device includes: a display panel, including 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, disposed entirely on the non-display side of the display panel; and a support layer, disposed on the side of the spacer layer away from the display panel. The spacer layer and the support layer are bonded together. The support layer includes a first support portion and a second support portion, which are separately disposed to form a gap between them. The gap corresponds to the bending portion. This application provides a spacer layer that supports all the film layers of the display device, facilitating module bending and providing high flatness to avoid initial marks during film layer bonding. Simultaneously, the support layer includes a first support portion and a second support portion, which are separately disposed on both sides of the gap, reducing the thickness and mechanical strength of the bending portion. The gap corresponding to the bending portion makes the display device easy to bend, reducing bending stress and minimizing creases. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the film layer stacking structure of a display device in a flattened state, provided in an embodiment of this application.

[0040] Figure 2 This is a schematic diagram of a display device in a fully folded state, as provided in an embodiment of this application.

[0041] Figure 3 This application provides a schematic diagram of a partial film layer cross-section of a display device in a flattened state, as shown in an embodiment of the present application.

[0042] Figure 4 This is a schematic cross-sectional view of a display device in a fully folded state, as provided in an embodiment of this application.

[0043] Figure 5 This is a top view of a partial area of ​​a support layer provided in an embodiment of this application;

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

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

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

[0047] Figure 9 This is a schematic diagram of a display terminal in a flattened state, provided as an embodiment of this application.

[0048] Figure 10 This is a schematic diagram of a display terminal in a fully folded state, provided as an embodiment of this application.

[0049] Figure 11 This is a cross-sectional schematic diagram of a display terminal in a fully folded state, provided as an embodiment of this application.

[0050] Figure 12 This is a schematic diagram showing the bending radius of a display device in the prior art when it is in a fully folded state.

[0051] Figure 13This is a schematic diagram of the bending radius of a display device in a fully folded state according to an embodiment of this application;

[0052] Figure 14 This is a schematic diagram comparing the stress of each adhesive layer in a display device in the prior art and the display device in the embodiment of this application when they are in a fully folded state;

[0053] Figure 15 This is a schematic diagram comparing the risk of film layer breakage when a display device in the prior art and the display device in the embodiment of this application are in a fully folded state. Detailed Implementation

[0054] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0055] This application provides a display device, including: a display panel including a first non-bent portion and a second non-bent portion, and a bent portion located between the first non-bent portion and the second non-bent portion; a spacer layer disposed entirely on the non-display side of the display panel; and a support layer disposed on the side of the spacer layer away from the display panel, wherein the spacer layer and the support layer are adhered to each other; 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 disposed to form a gap between the first support portion and the second support portion, and the gap is disposed corresponding to the bent portion. This application also provides a display terminal including the aforementioned display device, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments.

[0056] Example 1

[0057] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 1 This is a schematic diagram of the film layer stacking structure of a display device in a flattened state, provided in an embodiment of this application. Figure 2 This is a schematic diagram of a display device in a fully folded state, as provided in an embodiment of this application. Figure 3This application provides a schematic diagram of a partial film layer cross-section of a display device in a flattened state, as shown in an embodiment of the present application. Figure 4 This is a schematic cross-sectional view of a display device in a fully folded state, as provided in an embodiment of this application. Figure 3 for Figure 1 A cross-sectional diagram of the area marked with the dashed line in the middle HK section, but... Figure 3 This example only illustrates a portion of the film structure of the display device. Figure 4 for Figure 2 A cross-sectional diagram of the area marked with the dashed line in HJ, but... Figure 4 This example only illustrates a portion of the film structure of the display device. Figure 1 The illustration shows a schematic diagram of a film layer stacking in a display device, but it does not constitute a limitation on the order, number, 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 which extends along a first direction X, and a second direction Y perpendicular to the first direction.

[0058] This application provides a display device 1000, which includes a display panel 4, a spacer layer 6, and a support layer 7. The display panel 4 includes a first non-bent portion FF1 and a second non-bent portion FF2, and a bent portion FF3 located between the first non-bent portion FF1 and the second non-bent portion FF2. The spacer layer 6 is disposed on the non-display side of the display panel 4. The support layer 7 is disposed on the side of the spacer layer 6 away from the display panel 4, and the spacer layer 6 is attached to the support layer 7. The support layer 7 includes a first support portion 71 and a second support portion 72, which are separately disposed to form a gap 73 between the first support portion 71 and the second support portion 72. The gap 73 is disposed corresponding to the bent portion.

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

[0060] Specifically, the display panel 4 can 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 here.

[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 emission direction of the display panel 4.

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

[0063] Specifically, the spacer layer 6 and the support layer 7 are stacked and bonded together on the non-display side of the display panel 4, and the support layer 7 is disposed on the 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 any pattern.

[0065] Specifically, the support layer 7 includes a first support portion 71 and a second support portion 72. The first support portion 71 and the second support portion 72 are separately disposed to form a gap 73 between the first support portion 71 and the second support portion 72. The gap 73 is provided 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, which do not contact each other, and a gap 73 is provided between the first support portion 71 and the second support portion 72.

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

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

[0068] In this embodiment, a full-surface spacer layer 6 is provided. The spacer layer 6 is used to support the film layers of the entire display device 1000, which facilitates 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 initial marks when the various film layers of the display device 1000 are bonded together. Meanwhile, the support layer 7 includes a first support portion 71 and a second support portion 72. The first support portion 71 and the second support portion 72 are separately disposed on both sides of a gap 73, which reduces the thickness and mechanical strength of the bending portion. The setting of the gap 73 corresponding to the bending portion FF3 makes the display device 1000 easy to bend, reduces bending stress, and can reduce the occurrence of creases.

[0069] Example 2

[0070] This embodiment is the same as or similar to Embodiment 1, except that it further describes some features or implementations of the display device 1000.

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

[0072] Specifically, such as Figure 3 As shown, the spacer layer 6 supports the entire film layer of the display device 1000 and also participates in bending at the bending portion. The spacer layer 6 has a relatively small thickness, allowing it to both support the entire film layer of the display device 1000 and bend. The support layer 7 has a larger thickness. Since the area of ​​the bending portion FF3 is small, while the areas of the first non-bending portion FF1 and the second non-bending portion FF2 are large, the support layer 7 can provide sufficient support for the first non-bending portion FF1 and the second non-bending portion FF2. Furthermore, the support layer 7 is relatively thick, providing support for the bend portion of the frame after it bends to the non-display side of the display panel 4, which will be described in detail later.

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

[0074] Specifically, such as Figure 3 As shown, the width of the gap 73 is less than the width of the bend FF3. Here, the width of both the gap 73 and the bend FF3 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 gap 73 is smaller than the width of the bent portion FF3, so that the first support portion 71 corresponds to a portion of the first non-bent portion FF1 and the bent portion FF3, and the second support portion 72 corresponds to a portion of the second non-bent portion FF2 and the bent portion FF3. Both the first support portion 71 and the second support portion 72, corresponding to a portion of the bent portion FF3, participate in the bending process or bending action of the display panel 4, shortening the width of the 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 for the bent portion, which can avoid or improve the occurrence of fold marks.

[0076] Example 3

[0077] This embodiment is the same as or similar to Embodiment 2, except that it further describes some features or implementations of the display device 1000.

[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, with the main bending portion FF33 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 configured corresponding to the first non-bending portion FF1, the third sub-support portion 721 is configured corresponding to the second non-bending portion FF2, the second sub-support portion 712 is configured corresponding to the first transition bending portion FF31, and the fourth sub-support portion 722 is configured corresponding to the second transition bending portion FF32. Both the second sub-support portion 712 and the fourth sub-support portion 722 include a plurality of hollow holes 701, with a gap 73 corresponding to the main bending portion FF33.

[0079] Specifically, both the second sub-support portion 712 and the fourth sub-support portion 722 include multiple hollow holes 701, that is, the second sub-support portion 712 and the fourth sub-support portion 722 are arranged in a grid pattern.

[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 smoothly or gradually 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 smoothly or gradually from the second non-bending portion FF2 to the main bending portion FF33, thus preventing the display panel 4 from breaking or developing 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 interconnected as a whole.

[0082] Specifically, the second support portion 72 includes a third sub-support portion 721 and a fourth sub-support portion 722, which are interconnected as a whole.

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

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

[0085] Specifically, both the second sub-support portion 712 and the fourth sub-support portion 722 include multiple hollow holes 701. 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 also provides support for the first transition bending portion FF31 to reduce fold marks; the fourth sub-support portion 722 participates in the bending of the second transition bending portion FF32, and also provides support for the second transition bending portion FF32 to reduce fold marks. A gap 73 exists between the second sub-support portion 712 and the fourth sub-support portion 722, which can reduce fold marks.

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

[0088] Specifically, when the display device 1000 is in a flattened state, the width of the gap 73 in the second direction Y is equal to the width of the bent portion FF3 in the second direction Y, so that the gap 73 just overlaps with the main bent 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 gap 73 is optimal.

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

[0090] Specifically, the spacer layer 6 can be a rigid support layer, and the support layer 7 can be a rigid support layer or an elastic support layer, and the support layer 7 is relatively thick.

[0091] Specifically, the elastic modulus of the spacer layer 6 is greater than that of the support layer 7. The spacer layer 6 provides full-area support and plays a major supporting role, while the support layer 7 plays an auxiliary supporting role in the corresponding area. The elastic modulus of the second sub-support part 712 and the fourth sub-support part 722 are smaller, providing a certain buffering effect for the first transition bending part FF31 and the second transition bending part FF32.

[0092] Example 4

[0093] This embodiment is the same as or similar to Embodiment 3, except that it further describes some features or implementations of the display device 1000, especially the multiple configurations of the cutout holes 701.

[0094] Please see Figure 5 , Figure 6 , Figure 5 This is a top view of a partial area of ​​a support layer provided in an embodiment of this application; Figure 6 This is an enlarged schematic diagram of a partial area of ​​a support layer provided in an embodiment of this application. Figure 6 for Figure 5 An enlarged view of the area within the dashed box 702. Figure 6The enlarged illustration shows the shape of the perforated hole 701.

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

[0096] Specifically, such as Figure 1 and Figure 3 As shown, the display panel 4 or 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.

[0097] Specifically, the length of the multiple perforated 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 712 and the fourth sub-support 722 in the second direction and reduce creases.

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

[0099] In some embodiments, the perforation density of the plurality of perforated holes 701 in the second sub-support portion 712 gradually increases along the second direction Y towards the main bending portion FF33; the perforation density of the plurality of perforated holes 701 in the fourth sub-support portion 722 gradually increases along the second direction Y towards the main bending portion FF3. Specifically, during the folding process of the display panel 4 or the display device 1000, the bending angle is larger and the degree of bending is greater closer to the main bending portion FF3, resulting in greater bending stress or folding stress. The gradual increase in the perforation density of the plurality of perforated holes 701 in the second sub-support portion 712 and the gradual increase in the perforation density of the plurality of perforated holes 701 in the fourth sub-support portion 722 along the second direction Y towards the main bending portion FF3 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, providing good bending performance, making it easier to bend, and reducing the occurrence of creases.

[0100] Specifically, further, by designing the size and arrangement of the mesh of the perforated holes 701, or as can be understood as designing a gradient graphic structure based on the specific arc or curvature value when the display device 1000 is bent, the bending modulus of the support layer 7 corresponding to the first transition bending area FF31 and the second transition bending area FF32 is adjusted, thereby controlling the bending stiffness of the second sub-support part 712 and the fourth sub-support part 722 of the support layer 7, and thus 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 segment of the teardrop-shaped bending display device 1000; at the same time, in the display terminal 2000 in the subsequent embodiment, 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 imprint formation.

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

[0102] In some embodiments, the width of the plurality of hollow holes 701 is the same in the second direction Y; the length of the plurality of hollow holes 701 of the second sub-support 712 gradually increases along the second direction Y towards the main bending portion FF33 in the first direction X, and the length of the plurality of hollow holes 701 of the fourth sub-support 722 gradually increases along the second direction Y towards the main bending portion FF33 in the first direction X.

[0103] Specifically, the length of the multiple perforations 701 in the second sub-support 712 gradually increases along the second direction Y towards the main bending portion FF33 in the first direction X, thereby reducing the solid density of the second sub-support 712 along the second direction Y towards the main bending portion FF33; the length of the multiple perforations 701 in the fourth sub-support 722 gradually increases along the second direction Y towards the main bending portion FF33 in the first direction X, thereby reducing the solid density of the fourth sub-support 722 along the second direction Y towards the main bending portion FF33. This reduces the bending strength and mechanical strength of the second sub-support 712 and the fourth sub-support 722 in the direction near the main bending portion FF3, providing good bending performance, making it easier to bend, and reducing 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 distance between any hollow hole 701 and the adjacent hollow hole 701 on any side in the first direction X is a second length value, and the sum of the first length value and the corresponding second length value of the hollow hole 701 is a fixed value K0.

[0105] Specifically, such as Figure 6 As shown, the plurality of perforated holes 701 include a first perforated hole 7011, a second perforated hole 7012, and a third perforated hole 7013. The first length value of the first perforated hole 7011 is K1, the second length value corresponding to the first perforated hole is K2, and the sum of K1 and K2 is a fixed value K0; the first length value of the second perforated hole 7012 is K3, the second length value corresponding to the second perforated hole 7012 is K4, and the sum of K3 and K4 is a fixed value K0; the first length value of the third perforated hole 7013 is K5, the second length value corresponding to the third perforated 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 and the corresponding second length value of the perforated hole 701 is a fixed value K0. This allows the solid density, perforation density, and bending stiffness of the second sub-support 712 and the fourth sub-support 722 to gradually change uniformly in the direction near the main bending portion FF3, and to conform to and match the stress change law of the bending portion FF3 during bending. This can reduce creases and facilitate bending and folding. In some embodiments, the surface of the support layer 7 away from the spacer layer 6 has a centrally symmetrical structure.

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

[0108] Example 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] Please see Figure 7 , Figure 8 , Figure 7 A schematic diagram of a first adhesive layer and a support layer provided in an embodiment of this application; Figure 8 This is a cross-sectional schematic diagram of a display device 1000 at the pad bending portion, provided in an embodiment of this application.

[0111] In some embodiments, the display device 1000 further includes a first adhesive layer 211, which includes a first adhesive portion 2111 and a second adhesive portion 2112. A first support portion 71 is attached to the spacer layer 6 through the first adhesive portion 2111, and a second support portion 72 is attached to the spacer layer 6 through the second adhesive portion 2112. The first adhesive portion 2111 and the second adhesive portion 2112 are separated from each other by corresponding gaps 73. Both the first adhesive portion 2111 and the second adhesive portion 2112 are non-perforated.

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

[0113] Specifically, the first adhesive portion 2111 and the second adhesive portion 2112 are separated from each other by the gap 73. It can be understood that the 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 gap 73 and are separated.

[0114] Specifically, both the first adhesive portion 2111 and the second adhesive portion 2112 are non-perforated, which can provide a good adhesion plane for the support layer 7, so that the surface of the support layer 7 near the spacer layer 6 is on the same plane, which helps to maintain the flatness of the display panel 4.

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

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

[0117] Please see Figure 8 The display device 1000 includes a pad bending portion BB1, on which pad terminals (not shown in the figure) are provided. The pad terminals are used to connect to flexible circuit boards, driver chips, etc. The pad bending portion BB1 is bent to the non-display side of the display panel or display device, which can reduce the bezel. The pad bending portion BB1 can be any of the existing technologies, and the pad bending portion BB1 will not be described in detail here.

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

[0119] In some embodiments, the display device 1000 further includes a back panel layer 31 and a foam layer 32. The back panel layer 31 is disposed between the spacer layer 6 and the display panel 4; the foam layer 32 is disposed between the back panel layer 31 and the spacer layer 6; two adjacent of the display panel 4, the back panel layer 31, the foam layer 32, the spacer layer 6 and the support layer 7 are bonded together.

[0120] Specifically, the display device 1000 also includes a back panel layer 31, a foam layer 32, a spacer layer 6, and a support layer 7, which provide complete support, cushioning, folding and other performance support for the display panel 4 or the display device 1000.

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

[0122] Furthermore, in the manufacturing process of the display device 1000, the spacer layer 6 and the support layer 7 are first bonded together as a whole, and then the spacer layer 6 and the support layer 7 are bonded together on the non-display side of the display panel 4.

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

[0124] Example 6

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

[0126] Please see Figure 9 , Figure 10 , Figure 11, Figure 9 This is a schematic diagram of a display terminal in a flattened state, provided as an embodiment of this application. Figure 10 This is a schematic diagram of a display terminal in a fully folded state, provided as an embodiment of this application. Figure 11 This is a cross-sectional schematic diagram of a display terminal in a fully folded state, as provided in an embodiment of this application. Figure 11 for Figure 10 A cross-sectional diagram of the area marked with the dashed line in HQ, but... Figure 11 The illustration only shows a portion of the film structure of the display device. 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. 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] This application provides a display terminal 2000, which includes a display device 1000 according to any of the above embodiments, a mid-frame housing 1, and a rotating mechanism 3. The mid-frame housing 1 is disposed on the side of the support layer 7 away from the display panel 4. The mid-frame housing 1 includes a first mid-frame 11 and a second mid-frame 12. The first mid-frame 11 is at least corresponding to a first non-bent portion FF1, and the second mid-frame 12 is at least corresponding to a second non-bent portion FF2. When the display device 1000 is in a flattened state, the first mid-frame 11 and the second mid-frame 12 abut against the corresponding bent portions FF3. The rotating mechanism 3 is housed in the mid-frame housing 1 and connected to the first mid-frame housing 11 and the second mid-frame 12. When the display device 1000 is in a flattened state, the rotating mechanism 3 is disposed between the bent portion FF3 of the display panel 4 and the mid-frame housing 1.

[0128] Specifically, the middle frame housing 1 is located on the side of the support layer 7 away from the display panel 4, which means that the main part of the middle frame housing 1 is located on the side of the support layer 7 away from the display panel 4. When the middle frame housing 1 includes a receiving structure, the display panel 4 or the display device 1000 can be at least partially received in the middle frame housing 1.

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

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

[0131] Specifically, when the display device 1000 is in a flattened state, the corresponding bent 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, which can prevent external dust, foreign objects, particles and the like from entering, thereby playing the 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 abut against the corresponding bent portions FF3; at this time, the first middle frame 11 corresponds to a portion of the first non-bent portion FF1, the first transition bent portion FF31, and the main bent portion FF33; the second middle frame 12 corresponds to a portion of the second non-bent portion FF2, the second transition bent portion FF32, and the main bent portion FF33.

[0133] Specifically, the rotating mechanism 3 is housed 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 disposed between the bent portion FF3 of the display panel and the middle frame housing 1. The rotating mechanism 3 can be basically or completely corresponding to the bent portion FF3.

[0134] Specifically, the rotating mechanism 3 can be any rotating hinge or other mechanism and device in the prior art, and 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, with the main bending portion FF33 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, which 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 near the second transition bending portion FF32, and the edge portion of the second transition bending portion FF32 near the first transition bending portion FF31 are all received in the receiving groove 3011.

[0136] Specifically, such as Figure 11As shown, the rotating mechanism 3 includes a hinge mounting base 301, which 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 near the second transition bending portion FF32, and the edge portion of the second transition bending portion FF32 near 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 is dropped or falls to the ground, the edge portion of the first transition bending portion FF31 near the second transition bending portion FF32 and the edge portion of the second transition bending portion FF32 near the first transition bending portion FF31 are all received in the receiving groove 3011. The edges of the first transition bend FF31 of the hinge mounting base 301 are all housed in the receiving groove 3011, so that the receiving groove 3011 of the hinge mounting base 301 contacts the edges of the first transition bend FF31 and the second transition bend FF32 and the edges of the second transition bend FF32 and the first transition bend FF31. The receiving groove 3011 of the hinge mounting base 301 will not contact the parts of the main bend FF33 adjacent to the first transition bend FF31 and the parts of the main bend FF33 adjacent to the second transition bend FF32, thereby preventing the main bend FF33 from being damaged in the event of a fall or drop, and playing a role in protecting the main bend FF33.

[0137] It should be noted that you should refer to [link / reference]. Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 12 This is a schematic diagram showing the bending radius of a display device in the prior art when it is in a fully folded state. Figure 13 This is a schematic diagram of the bending radius of a display device in a fully folded state according to an embodiment of this application; Figure 14 This is a schematic diagram comparing the stress of each adhesive layer in a display device in the prior art and the display device in the embodiment of this application when they are in a fully folded state; Figure 15 This is a schematic diagram comparing the risk of breakage of each film layer when a display device in the prior art and a display device in the embodiments of this application are in a fully folded state. Figure 12 , Figure 13 , Figure 14 , Figure 15 All were obtained through simulation software. (Comparison) Figure 12 and Figure 13 The first transition bend FF31 and the second transition bend FF32 of the display device in this application embodiment are significantly improved. After optimization by this application embodiment, the first transition bend FF31 and the second transition bend FF32 are smoother, such as... Figure 12 and Figure 13The first bending radius R1 of the first transition bend FF31 and the second transition bend FF32 marked in the middle is increased, thereby avoiding the existence of the bend sharp corner of the main bend FF33. That is, the second bending radius R2 of the main bend FF33 is also increased or becomes gentler. The stress state of the main bend FF33 is effectively mitigated, and the curvature is more continuous. Through the setting of the embodiment of this application, the risk of peeling, breakage and cracking of each film layer material of the main bend FF33 is effectively reduced.

[0138] Please continue reading. Figure 14 and Figure 15 , Figure 14 The horizontal axis represents the various adhesive layers in the display device (each adhesive layer OCA1, OCA2, OCA3, OCA4, OCA5, OCA6 corresponds to...). Figure 1 Multiple adhesion layers 21), Figure 14 The vertical axis represents the magnitude of stress. Figure 15 The vertical axis represents the risk of membrane fracture in the display device (Longitudinal strain). Figure 14 and Figure 15 A comparison was made with the first type of display device in the prior art ( Figure 14 and Figure 15 The Initial Design item in the document, and the display device in the embodiments of this application ( Figure 14 and Figure 15 The Optimal design item in the prior art and the second type of display device in the prior art Figure 14 and Figure 15 The reference value item in the middle corresponds to Figure 12 (structure); from Figure 14 As can be seen, the stress on each adhesive layer in the display device of this application embodiment is reduced and improved; from Figure 15 As can be seen from this, the stress value of peeling of each adhesive layer in the display device in the embodiment of this application is also significantly reduced, and the risk of film layer breakage in the display device 1000 is significantly reduced.

[0139] The above provides a detailed description of a display device and display terminal provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A display device, characterized in that, include: The display panel includes a first non-bent portion and a second non-bent portion, and a bent portion located between the first non-bent portion and the second non-bent portion; A spacer layer is disposed on the non-display side of the display panel, and the spacer layer is non-patterned; the spacer layer is a thin metal plate or a polymer composite material plate with high flatness; A support layer is disposed on the side of the spacer layer away from the display panel, and the spacer layer is attached to the support layer; The support layer includes a first support portion and a second support portion, the first support portion and the second support portion are separately disposed to form a gap between the first support portion and the second support portion, the gap being disposed corresponding to the bending portion; The elastic modulus of the spacer layer is greater than that 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. The thickness of the support layer is greater than that of the spacer layer. 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 disposed corresponding to the first non-bending portion. The third sub-support portion is disposed corresponding to the second non-bending portion. The second sub-support portion is disposed corresponding to the first transition bending portion. The fourth sub-support portion is disposed corresponding to the second transition bending portion. Both the second sub-support portion and the fourth sub-support portion include multiple hollow holes. The interval gap is disposed corresponding to the main bending portion.

2. The display device as claimed in claim 1, characterized in that, When the display device is in a flattened state, the width of the gap is smaller than the width of the bend.

3. The display device as claimed in claim 1, characterized in that, When the display device is in a flattened state, the width of the gap is equal to the width of the main bend.

4. The display device as claimed in claim 1, characterized in that, The bending axis of the bent portion extends in the first direction; The length of the plurality of said 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 in the second sub-support portion are staggered, and the plurality of hollow holes in the fourth sub-support portion are staggered.

5. The display device as claimed in claim 4, characterized in that, In the second direction, the center of at least one column of the perforated holes is located on the extension line of the centerline of any one of the perforated holes in that column.

6. The display device as claimed in claim 4, characterized in that, The perforation density of the plurality of perforated holes in the second sub-support gradually increases along the second direction towards the main bending portion; the perforation density of the plurality of perforated holes in the fourth sub-support gradually increases along the second direction towards the main bending portion.

7. The display device as claimed in claim 6, characterized in that, In the second direction, the width of the plurality of cutouts is the same; The length of the plurality of hollow holes in the second sub-support part gradually increases in the first direction as it approaches the main bending part along the second direction, and the length of the plurality of hollow holes in the fourth sub-support part gradually increases in the first direction as it approaches the main bending part along the second direction.

8. The display device as claimed in claim 7, characterized in that, The length of any of the hollow holes in the first direction is a first length value, the distance between any of the hollow holes and the hollow holes adjacent to each other on any side of the first direction is a second length value, and the sum of the first length value and the corresponding second length value of the hollow hole is a fixed value.

9. The display device as claimed in claim 8, characterized in that, In the first direction, the length of the perforated hole is greater than the distance between any adjacent perforated holes, that is, the first length value is greater than or equal to the second length value.

10. The display device as claimed in claim 1, characterized in that, The surface of the support layer away from the spacer layer has a centrally symmetrical structure.

11. The display device as claimed in claim 1, characterized in that, It also includes a first adhesive layer, which includes a first adhesive portion and a second adhesive portion. The first support portion is attached to the spacer layer through the first adhesive portion, and the second support portion is attached to the spacer layer through the second adhesive portion. The first adhesive portion and the second adhesive portion are separately disposed corresponding to the spacer gap. Both the first adhesive portion and the second adhesive portion are non-perforated.

12. The display device as claimed in claim 1, characterized in that, Also includes: A back panel layer is disposed between the spacer layer and the display panel; A foam layer is disposed between the backing layer and the spacer layer; The display panel, the back panel layer, the foam layer, the spacer layer, and the support layer are arranged in pairs that are bonded together.

13. A display terminal, characterized in that, The display device includes any one of claims 1 to 12, and: A mid-frame housing is disposed on the side of the support layer away from the display panel. The mid-frame housing includes a first mid-frame and a second mid-frame. The first mid-frame is disposed at least corresponding to the first non-bending portion, and the second mid-frame is disposed at least corresponding to the second non-bending portion. When the display device is in a flattened state, the first mid-frame and the second mid-frame abut against each other at the corresponding bending portion. A rotating mechanism is housed in the middle frame housing and connected to the first middle frame housing and the second middle frame. When the display device is in a flattened state, the rotating mechanism is disposed between the bent portion of the display panel and the middle frame housing.

14. The display terminal as described in claim 13, characterized in that, The bending portion includes a first transition bending portion, a main bending portion, and a second transition bending portion, with the main bending portion located between the first transition bending portion and the second transition bending portion; The rotating mechanism includes a hinge mounting base, which includes an arc-shaped receiving groove. When the display device is in a fully folded state, the main bending portion, the edge portion of the first transition bending portion near the second transition bending portion, and the edge portion of the second transition bending portion near the first transition bending portion are all received in the receiving groove.

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