Folding display panel and display device

Abstract

The utility model discloses a folding display panel and a display device. The folding display panel includes a display area and a non-display area; the folding display panel also includes: a substrate; a display function layer, located on one side of the substrate; an anti-crack structure, located in the non-display area on one side of the substrate, and located on the same side as the display function layer; the anti-crack structure includes anti-crack ribs and a covering layer covering the anti-crack ribs. The technical solution of the embodiment of the utility model is to set an anti-crack structure in the non-display area on one side of the substrate of the folding display panel, and the anti-crack structure includes anti-crack ribs and a covering layer. When the folding area of ​​the folding display panel is impacted by external force, the cracks are blocked at the anti-crack ribs, thereby improving the ability of the folding area to resist external impact, improving the folding performance, and improving the product quality.

Description

Technical Field

[0001] The utility model relates to the technical field of display panels, and in particular to a foldable display panel and a display device. Background Art

[0002] With the continuous development of display devices, the demand for display devices that occupy less space is getting higher and higher. Folding displays are popular among people because of their cool appearance and diverse usage environments, but their unique foldable performance makes the folding area also become the weak point of the entire screen.

[0003] When a foldable display screen is in use, it will alternate between folding and unfolding. The folding area is easily impacted by external forces, causing cracking and damage. Utility Model Content

[0004] The utility model provides a folding display panel and a display device, so as to improve the ability of the folding area to resist external impact and improve the folding performance.

[0005] According to one aspect of the present invention, a foldable display panel is provided, the foldable display panel comprising a display area and a non-display area; the foldable display panel further comprises:

[0006] substrate;

[0007] A display function layer, located on one side of the substrate;

[0008] The anti-crack structure is located in the non-display area on one side of the substrate and is located on the same side as the display function layer; the anti-crack structure includes anti-crack ribs and a covering layer covering the anti-crack ribs.

[0009] Optionally, the anti-crack ribs include a first anti-crack rib having a first shape and a second anti-crack rib having a second shape, and the first shape and the second shape are different shapes.

[0010] Optionally, the first anti-cracking ribs and the second anti-cracking ribs are arranged at intervals.

[0011] Optionally, the anti-crack ribs include at least two first anti-crack ribs in a first shape.

[0012] Optionally, the orthographic projection of the first anti-crack rib on the substrate includes a rectangle.

[0013] Optionally, the anti-crack ribs include at least two second anti-crack ribs in a second shape.

[0014] Optionally, the orthographic projection of the second anti-crack rib on the substrate includes a serpentine shape.

[0015] Optionally, the foldable display panel is divided into a bending area, a first non-bending area and a second non-bending area; the bending area is located between the first non-bending area and the second non-bending area;

[0016] The anti-cracking ribs extend from the bending area to the first non-bending area and the second non-bending area.

[0017] Optionally, the anti-cracking ribs include metal ribs, and the covering layer includes an organic covering layer.

[0018] According to another aspect of the present invention, a display device is provided, the display device comprising the above-mentioned display panel; the display device further comprising an upper module and a lower module;

[0019] The folding display panel is located between the upper module and the lower module.

[0020] The technical solution of the embodiment of the utility model is to set an anti-crack structure in the non-display area on one side of the substrate of the foldable display panel, and the anti-crack structure includes anti-crack ribs and a covering layer. When the folding area of ​​the foldable display panel is impacted by external force, the cracks are blocked at the anti-crack ribs, thereby improving the ability of the folding area to resist external impacts, improving the folding performance, and improving product quality.

[0021] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 is a structural schematic diagram of a foldable display panel provided according to an embodiment of the utility model;

[0024] Figure 2 is a cross-sectional view of a folding area of ​​a folding display panel provided according to an embodiment of the utility model;

[0025] Figure 3 It is a schematic structural diagram of an anti-crack rib of a foldable display panel provided according to an embodiment of the utility model;

[0026] Figure 4 It is a schematic diagram of the arrangement of anti-cracking ribs of a foldable display panel provided according to an embodiment of the utility model;

[0027] Figure 5 It is a schematic diagram of another arrangement of anti-cracking ribs of a foldable display panel provided according to an embodiment of the utility model;

[0028] Figure 6 is another structural schematic diagram of an anti-crack rib of a foldable display panel provided according to an embodiment of the utility model;

[0029] Figure 7 It is another structural schematic diagram of an anti-crack rib of a foldable display panel provided according to an embodiment of the utility model;

[0030] Figure 8 is a schematic diagram of a specific structure of a foldable display panel provided according to an embodiment of the utility model;

[0031] Fig. 9 It is a structural schematic diagram of a display device provided according to an embodiment of the utility model. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0034] Figure 1 is a structural schematic diagram of a foldable display panel provided according to an embodiment of the utility model, such as Figure 1 As shown, the foldable display panel includes: a display area AA and a non-display area NAA;

[0035] In an embodiment of the utility model, the display area AA of the folding display panel is used to display an image, and the display area AA may include a plurality of pixel areas arranged in an array. Pixels that emit a certain type of light may be formed in the pixel area. The non-display area NAA may be arranged around the display area AA, and the non-display area NAA may be provided with a data drive circuit and a scan drive circuit for generating a drive signal to drive the pixels of the display area AA to emit light. The data drive circuit may include a data drive chip, and the scan drive circuit may include a cascaded shift register circuit. A folding area is also provided in the middle part between the display area AA and the non-display area NAA. For example, the folding display panel is also provided with a folding area 10, and the folding area 10 is located at the central axis part of the display panel.

[0036] Figure 2 is a cross-sectional view of a folding area of ​​a folding display panel provided according to an embodiment of the present utility model, such as Figure 2 As shown, the foldable display panel also includes: a substrate 20; a display function layer 30, located on one side of the substrate 20; an anti-crack structure 40, located in a non-display area on one side of the substrate 20, and located on the same side as the display function layer 30; the anti-crack structure 40 includes an anti-crack rib 401 and a covering layer 402 covering the anti-crack rib 401.

[0037] In the embodiment of the utility model, the substrate 20 includes but is not limited to a flexible substrate. The flexible substrate is made of a flexible insulating substrate and can be bent, rolled or folded freely. In the embodiment of the utility model, in order to realize the function of folding the display panel, the substrate 20 can be made of polyimide. The display function layer 30 is located on one side of the substrate 20. The display function layer 30 includes an array layer 301, a light-emitting device layer 302 and a thin film encapsulation layer 303. The array layer 301 is formed by film formation, exposure and etching to superimpose film layers of different patterns and different materials to form a low-temperature polysilicon drive circuit, which provides a lighting signal and a stable power input for the light-emitting device. The coating process on the substrate 20 uses a coating device to deposit the required material on the substrate 20 by physical or chemical means. The exposure process is carried out by optical irradiation, and the pattern on the mask is transferred to the substrate 20 after coating through the photoresist. The lower film on the substrate 20 that is not covered by the photoresist is etched away by physical or chemical means, and finally the photoresist on the covering film is washed off, leaving a film layer with the required pattern, and producing the array layer 301.

[0038] Folding display panels need to use thin film encapsulation (TFE) instead of glass encapsulation, which is flexible and lightweight. TFE can prevent external contamination by stacking inorganic or organic films on organic material layers.

[0039] The technical solution of the embodiment of the utility model is to set an anti-crack structure in the non-display area on one side of the substrate of the foldable display panel, and the anti-crack structure includes anti-crack ribs and a covering layer. When the folding area of ​​the foldable display panel is impacted by external force, the cracks are blocked at the anti-crack ribs, thereby improving the ability of the folding area to resist external impacts, improving the folding performance, and improving product quality.

[0040] Figure 3 Schematic diagram of the structure of a crack-proof rib of a foldable display panel provided according to an embodiment of the utility model. Figure 3 As shown, the anti-crack rib 401 includes a first anti-crack rib 4011 in a first shape and a second anti-crack rib 4012 in a second shape, and the first shape and the second shape are different shapes.

[0041] In the embodiment of the utility model, the anti-crack rib 401 includes a first anti-crack rib 4011 and a second anti-crack rib 4012. The first anti-crack rib 4011 is in a first shape, and the second anti-crack rib 4012 is in a second shape. The first shape and the second shape are not limited in order for distinction. The second anti-crack rib 4012 is different from the first anti-crack rib 4011, and the first anti-crack rib 4011 and the second anti-crack rib 4012 have different shapes. The first shape includes but is not limited to a rectangle or a square, that is, the vertical projection shape of the first anti-crack rib 4011 on the substrate is a rectangle or a square. The second shape includes but is not limited to an S-shape or an O-shape. That is to say, the vertical projection shape of the second anti-crack rib 4012 on the substrate is an S-shape or an O-shape. When the folding area of ​​the folding display panel is impacted by an external force, the crack is blocked at the anti-crack rib 401, thereby improving the ability of the folding area to resist external impact. The first anti-crack rib 4011 and the second anti-crack rib 4012 in the anti-crack rib 401 are designed to be in different shapes, so as to resist different forms of external impacts, prevent cracks, and improve the folding performance of the display panel.

[0042] Figure 4 FIG. 1 is a schematic diagram of the arrangement of anti-crack ribs of a foldable display panel according to an embodiment of the present utility model. Figure 4 As shown, the first anti-crack ribs 4011 and the second anti-crack ribs 4012 are arranged at intervals.

[0043] In the embodiment of the present invention, the first anti-crack ribs 4011 in the first shape and the second anti-crack ribs 4012 in the second shape are arranged alternately. For example, the first anti-crack ribs 4011 in the rectangular shape and the second anti-crack ribs 4012 in the serpentine shape are arranged alternately. Figure 4 As shown in the content, the second anti-crack rib 4012 in a serpentine shape is arranged between two first anti-crack ribs 4011 in a rectangular shape.

[0044] Figure 5FIG. 1 is another schematic diagram of the arrangement of anti-crack ribs of a foldable display panel according to an embodiment of the present invention. Figure 5 As shown, the first anti-crack ribs 4011 in the first shape and the second anti-crack ribs 4012 in the second shape are arranged alternately. For example, the first anti-crack ribs 4011 in the rectangular shape and the second anti-crack ribs 4012 in the serpentine shape are arranged alternately. The first anti-crack ribs 4011 in the rectangular shape are arranged between the two second anti-crack ribs 4012 in the serpentine shape.

[0045] Figure 6 FIG. 1 is another structural schematic diagram of an anti-crack rib of a foldable display panel provided according to an embodiment of the utility model. Figure 6 As shown, the anti-crack ribs 401 include at least two first anti-crack ribs 4011 in a first shape.

[0046] In the embodiment of the utility model, the first shape may be a rectangle. Exemplarily, the anti-crack ribs 401 include at least two first anti-crack ribs 4011 in a rectangular shape.

[0047] Based on the above utility model embodiment technical solution, refer to Figure 2 and Figure 3 The orthographic projection of the first anti-crack rib 4011 on the substrate 20 includes a rectangle.

[0048] In the embodiment of the utility model, the anti-crack structure 40 is located in the non-display area on one side of the substrate 20 and is located on the same side as the display function layer 30. The anti-crack structure 40 includes an anti-crack rib 401 and a covering layer 402 covering the anti-crack rib 401. The anti-crack rib 401 includes a first anti-crack rib 4011 and a second anti-crack rib 4012. The orthographic projection of the first anti-crack rib 4011 on the substrate 20 includes a rectangle.

[0049] Figure 7 FIG. 1 is another structural schematic diagram of an anti-crack rib of a foldable display panel provided according to an embodiment of the utility model. Figure 7 As shown, the anti-crack tendons 401 include at least two second anti-crack tendons 4012 in a second shape.

[0050] In the embodiment of the present invention, the second shape may be a serpentine shape. Exemplarily, the anti-crack rib 401 includes at least two second anti-crack ribs 4012 in a serpentine shape.

[0051] Based on the above utility model embodiment technical solution, refer to Figure 2 and Figure 3 The orthographic projection of the second anti-crack rib 4012 on the substrate 20 includes a serpentine shape.

[0052] In the embodiment of the utility model, the anti-crack structure 40 is located in the non-display area on one side of the substrate 20 and is located on the same side as the display function layer 30. The anti-crack structure 40 includes an anti-crack rib 401 and a covering layer 402 covering the anti-crack rib 401. The anti-crack rib 401 includes a first anti-crack rib 4011 and a second anti-crack rib 4012. The orthographic projection of the second anti-crack rib 4012 on the substrate 20 includes a serpentine shape. When the anti-crack rib 401 is set to a serpentine shape, when there is an external impact, the development of cracks can be delayed, which is conducive to improving the ability of the folding area to resist external impact.

[0053] Figure 8 is a schematic diagram of a specific structure of a foldable display panel provided according to an embodiment of the utility model, such as Figure 8 As shown, the foldable display panel is divided into a bending zone 50, a first non-bending zone 601 and a second non-bending zone 602; the bending zone 50 is located between the first non-bending zone 601 and the second non-bending zone 602; the anti-cracking rib 401 extends from the bending zone 50 to the first non-bending zone 601 and the second non-bending zone 602.

[0054] In the embodiment of the present utility model, the foldable display panel is divided into a bending area 50, a first non-bending area 601 and a second non-bending area 602. Figure 8 As shown in the content, the bending zone 50 is a foldable area in the foldable display panel. Non-bending areas are distributed in the upper and lower parts of the bending zone 50. For example, the upper side of the bending zone 50 is the first non-bending zone 601, and the lower side of the bending zone 50 is the second non-bending zone 602. Alternatively, the lower side of the bending zone 50 may be the first non-bending zone 601, and the upper side of the bending zone 50 may be the second non-bending zone 602, which is not limited here. The bending zone 50 is located between the first non-bending zone 601 and the second non-bending zone 602. The anti-cracking ribs 401 extend from the bending zone 50 to the first non-bending zone 601 and the second non-bending zone 602, and the covering layer 402 covers the anti-cracking ribs 401, and the covering layer 402 covers the bending zone 50, the first non-bending zone 601 and the second non-bending zone 602.

[0055] Based on the above utility model embodiment technical solution, refer to Figure 8 The anti-cracking ribs 401 include metal ribs, and the covering layer 402 includes an organic covering layer.

[0056] In an embodiment of the utility model, the anti-crack ribs 401 include metal ribs, and the anti-crack ribs 401 may be composed of metal or metal and its compounds. Exemplarily, the material of the anti-crack ribs 401 may include shape memory alloys or amorphous metals. Metals and their compounds have properties such as high temperature resistance and corrosion resistance. The covering layer 402 includes an organic covering layer. By providing the anti-crack ribs 401 and the covering layer 402, and selecting metal ribs and organic covering layers, it can be achieved that when the bending zone 50 is impacted by external force, the cracks are blocked in the metal ribs and the organic covering layer, protecting the bending zone 50, improving the ability of the bending zone 50 to resist external impact, and improving the folding performance.

[0057] Fig. 9 is a schematic diagram of a display device according to an embodiment of the present utility model. Fig. 9 As shown, the display device includes the folding display panel of the above embodiment, and the display device also includes an upper module 100 and a lower module 200 ; the folding display panel is located between the upper module 100 and the lower module 200 .

[0058] In an embodiment of the utility model, the display device includes an upper module 100, a folding display panel and a lower module 200. The folding display panel is located between the upper module 100 and the lower module 200. The folding display panel includes a substrate 20; a display function layer 30, located on one side of the substrate 20; an anti-crack structure 40, located in a non-display area on one side of the substrate 20, and located on the same side as the display function layer 30; the anti-crack structure 40 includes an anti-crack rib 401 and a covering layer 402 covering the anti-crack rib 401. The display function layer 30 also includes an array layer 301, a light-emitting device layer 302 and a thin film encapsulation layer 303.

[0059] The upper module 100 and the lower module 200 are module segments. The module process cuts the packaged folding display panel into the actual product size and performs a lighting inspection on the folding display panel. After the inspection is confirmed to be OK, a polarizing plate is attached to the folding display panel, and the driving chip and the flexible printed circuit board are connected to the folding display panel. The folding display panel is then bonded to the reinforced cover glass containing the touch sensor. Finally, an aging test and a lighting inspection are performed on the module segment to form a display device.

[0060] The technical solution of the embodiment of the utility model is to set a display device, including a folding display panel, and also including an upper module and a lower module, wherein the folding display panel is located between the upper module and the lower module. By setting an anti-crack structure in the non-display area on one side of the substrate of the folding display panel, and the anti-crack structure including anti-crack ribs and a covering layer, when the folding area of ​​the folding display panel is impacted by an external force, the cracks are blocked at the anti-crack ribs, thereby improving the ability of the folding area to resist external impact and improving the quality of the display device.

[0061] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0062] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A foldable display panel, characterized in that: The foldable display panel includes a display area and a non-display area; the foldable display panel also includes: substrate; A display function layer, located on one side of the substrate; The anti-crack structure is located in the non-display area on one side of the substrate and is located on the same side as the display function layer; the anti-crack structure includes anti-crack ribs and a covering layer covering the anti-crack ribs.

2. The foldable display panel according to claim 1, characterized in that: The anti-crack ribs include a first anti-crack rib in a first shape and a second anti-crack rib in a second shape, wherein the first shape and the second shape are different shapes.

3. The foldable display panel according to claim 2, characterized in that: The first anti-cracking ribs and the second anti-cracking ribs are arranged at intervals.

4. The foldable display panel according to claim 1, characterized in that: The anti-crack ribs include at least two first anti-crack ribs in a first shape.

5. The foldable display panel according to any one of claims 2 to 4, characterized in that: The orthographic projection of the first anti-crack rib on the substrate includes a rectangle.

6. The foldable display panel according to claim 1, characterized in that: The anti-crack tendons include at least two second anti-crack tendons in a second shape.

7. The foldable display panel according to claim 2, 3 or 6, characterized in that: The orthographic projection of the second anti-crack rib on the substrate includes a serpentine shape.

8. The foldable display panel according to claim 1, characterized in that: The foldable display panel is divided into a bending area, a first non-bending area, and a second non-bending area; the bending area is located between the first non-bending area and the second non-bending area; The anti-cracking ribs extend from the bending area to the first non-bending area and the second non-bending area.

9. The foldable display panel according to claim 1, characterized in that: The anti-cracking ribs include metal ribs, and the covering layer includes an organic covering layer.

10. A display device, characterized in that: The foldable display panel comprises the foldable display panel according to any one of claims 1 to 9; the display device further comprises an upper module and a lower module; The folding display panel is located between the upper module and the lower module.

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