Substrate, display panel and display device

Abstract

The invention relates to a substrate, a display panel and a display device. The substrate comprises a first substrate layer; a barrier layer located on one side of the first substrate layer; the second substrate layer is located on the side, away from the first substrate layer, of the barrier layer; the at least one composite material layer is positioned between at least one of the first substrate layer and the second substrate layer and the barrier layer; the composite material layer comprises a composite material body and a plurality of magnetic particles distributed in the composite material body, the composite material body comprises an organic material, and the problem that a film layer in the substrate is prone to stripping can be solved.

Description

Technical Field

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

[0002] With the continuous development of display technology, organic light-emitting diode (OLED) display devices have been widely used in many fields such as flat panel display, flexible display, vehicle display and solid-state lighting due to their advantages such as wide color gamut, high contrast, energy saving and foldability. The OLED display panel includes a substrate and a plurality of light-emitting devices arranged on one side of the substrate, and the plurality of light-emitting devices can display images.

[0003] However, in the related art, there is a problem that the film layer in the substrate is prone to peeling off. Summary of the invention

[0004] Based on this, it is necessary to provide a substrate, a display panel and a display device, aiming to solve the problem in the related art that the film layer in the substrate is prone to peeling.

[0005] In a first aspect, an embodiment of the present application provides a substrate, including:

[0006] first basal layer;

[0007] a barrier layer, located on one side of the first substrate layer;

[0008] a second substrate layer, located on a side of the barrier layer away from the first substrate layer;

[0009] at least one composite material layer disposed between at least one of the first substrate layer and the second substrate layer and the barrier layer;

[0010] The composite material layer includes a composite material body and a plurality of magnetic particles distributed in the composite material body, wherein the composite material body includes an organic material.

[0011] In a second aspect, an embodiment of the present application further provides a display panel, and the display panel includes the substrate provided in the first aspect.

[0012] In a third aspect, an embodiment of the present application further provides a display device, which includes the display panel provided in the second aspect.

[0013] In an embodiment of the present application, at least one composite material layer is located between at least one of the first substrate layer and the second substrate layer and the barrier layer; the composite material layer includes a composite material body and a plurality of magnetic particles distributed in the composite material body, and the composite material body includes an organic material. By pre-simulating the film layer bonding force between the first substrate layer or / and the second substrate layer and the barrier layer, or by pre-verifying the film layer bonding force between the first substrate layer or / and the second substrate layer and the barrier layer, in the manufacturing process of the display panel, before the composite material layer is solidified, according to the film layer bonding force between the first substrate layer or / and the second substrate layer and the barrier layer obtained by simulation or verification, the distribution of the magnetic particles in the thickness direction of the composite material layer is controlled by an electric field or a magnetic field, so that the difference in material properties between the first substrate layer or / and the second substrate layer and the barrier layer can be reduced, and the composite material layer is provided between the first substrate layer or / and the second substrate layer and the barrier layer to play a role in material property transition, so that the problem of easy peeling of the film layer in the substrate can be improved or avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 A schematic diagram of a first cross-sectional structure of a substrate provided in some embodiments of the present application.

[0016] Figure 2 A schematic diagram of a second cross-sectional structure of a substrate provided in some embodiments of the present application.

[0017] Figure 3 A schematic diagram of an enlarged cross-sectional structure of carbon magnetic particles in a substrate provided in some embodiments of the present application.

[0018] Figure 4 A schematic diagram of a third cross-sectional structure of a substrate provided in some embodiments of the present application.

[0019] Figure 5 A schematic diagram of a fourth cross-sectional structure of a substrate provided in some embodiments of the present application.

[0020] Figure 6 A schematic diagram of a fifth cross-sectional structure of a substrate provided in some embodiments of the present application.

[0021] Figure 7 A schematic diagram of a sixth cross-sectional structure of a substrate provided in some embodiments of the present application.

[0022] Figure 8 A schematic diagram of a display panel provided for some embodiments of the present application.

[0023] Fig. 9 A schematic diagram of a display device provided in some embodiments of the present application.

[0024] Description of reference numerals:

[0025] Display panel 100; display device 200; substrate 10; first base layer 11; barrier layer 12; second base layer 13;

[0026] Composite material layer 21; composite material body 211; magnetic particles 212; magnetic material core 212a; protective shell 212b; first portion 2101; second portion 2102; first composite material layer 21A; second composite material layer 21B. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0029] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it can be directly on the other element or there may be intervening elements. Further, when a layer is referred to as being "under" another layer, it can be directly under or there may be one or more intervening elements. It is also understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or there may be one or more intervening elements.

[0030] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0031] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present application.

[0032] It should also be understood that when interpreting an element, even if not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" can mean within one or more standard deviations, which are not limited here.

[0033] Furthermore, in the specification, the phrase “planar distribution schematic diagram” refers to a drawing when a target portion is viewed from above, and the phrase “cross-sectional schematic diagram” refers to a drawing when a section taken by vertically cutting the target portion is viewed from the side.

[0034] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0035] In the related art, there is a problem that the film layer in the substrate is prone to peeling. The inventors found that the reason for the above phenomenon is that the substrate includes a base layer and a barrier layer, the base layer is an organic material, the barrier layer is an inorganic material, the material properties of the base layer and the barrier layer are too different, and the film layer bonding force between the base layer and the barrier layer is not strong enough, so that the film layer peeling problem is prone to occur between the base layer and the barrier layer, and the film layer peeling problem is more serious in the folding display panel.

[0036] Based on the above technical problems, the inventors have found that a composite material layer is arranged between the substrate layer and the barrier layer, and the composite material layer includes a composite material body, the composite material body includes an organic material, and a plurality of magnetic particles distributed in the composite material body. By pre-simulating the film layer bonding force between the substrate layer and the barrier layer, or by pre-verifying the film layer bonding force between the substrate layer and the barrier layer, in the manufacturing process of the display panel, before the composite material layer is solidified, according to the film layer bonding force between the substrate layer and the barrier layer obtained by simulation or verification, the distribution of magnetic particles in the thickness direction of the composite material layer is controlled by an electric field or a magnetic field, thereby reducing the difference in material properties between the substrate layer and the barrier layer, providing the composite material layer between the substrate layer and the barrier layer to play a role in material property transition, thereby improving or avoiding the problem of easy peeling of the film layer in the substrate.

[0037] The above is the core idea of ​​this application. The technical solutions in the embodiments of this application will be described clearly and completely below in conjunction with the drawings in the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] See also Figures 1 to 7 . Figure 1 A schematic diagram of a first cross-sectional structure of a substrate provided in some embodiments of the present application. Figure 2 A schematic diagram of a second cross-sectional structure of a substrate provided in some embodiments of the present application. Figure 3 A schematic diagram of an enlarged cross-sectional structure of carbon magnetic particles in a substrate provided in some embodiments of the present application. Figure 4 A schematic diagram of a third cross-sectional structure of a substrate provided in some embodiments of the present application. Figure 5 A schematic diagram of a fourth cross-sectional structure of a substrate provided in some embodiments of the present application. Figure 6 A schematic diagram of a fifth cross-sectional structure of a substrate provided in some embodiments of the present application. Figure 7 A schematic diagram of a sixth cross-sectional structure of a substrate provided in some embodiments of the present application.

[0039] The present application provides a substrate 10, which includes a first substrate layer 11, a barrier layer 12, a second substrate layer 13, and at least one composite material layer 21. The barrier layer 12 is located on one side of the first substrate layer 11; the second substrate layer 13 is located on a side of the barrier layer 12 away from the first substrate layer 11; the at least one composite material layer 21 is located between at least one of the first substrate layer 11 and the second substrate layer 13 and the barrier layer 12; the composite material layer 21 includes a composite material body 211, and a plurality of magnetic particles 212 distributed in the composite material body 211, and the composite material body 211 includes an organic material.

[0040] For example, the first substrate layer 11 and the second substrate layer 13 may be flexible substrates, the materials of the first substrate layer 11 and the second substrate layer 13 may be organic materials, and the materials of the first substrate layer 11 and the second substrate layer 13 may be polyimide (PI) or polyethylene terephthalate (PET).

[0041] For example, the materials of the first substrate layer 11 and the second substrate layer 13 may be the same, or the materials of the first substrate layer 11 and the second substrate layer 13 may be different.

[0042] For example, the material of the barrier layer 12 can be selected from at least one of a metal material and an inorganic material. The material of the barrier layer 12 can be silicon nitride, silicon oxynitride, silicon oxide or silicon dioxide. The material of the barrier layer 12 can be aluminum oxide or titanium oxide, etc. The barrier layer 12 mainly plays the role of blocking water and oxygen from entering the interior of the display panel.

[0043] For example, the composite body 211 includes an organic material, and the material of the composite body 211 may be the same as the first substrate layer 11 or the second substrate layer 13, or the material of the composite body 211 may be different from the first substrate layer 11 or the second substrate layer 13. The composite body 211 may be an adhesive layer.

[0044] For example, the substrate 10 serves as a component of the display panel 100, and the display panel 100 includes the substrate 10 and a plurality of light-emitting devices arranged on one side of the substrate 10, the plurality of light-emitting devices can be arranged on a side of the first base layer 11 away from the second base layer 13, or the plurality of light-emitting devices can be arranged on a side of the second base layer 13 away from the first base layer 11.

[0045] For example, Figure 1 and Figure 2 It is illustrated that the composite material layer 21 is located between the first substrate layer 11 and the barrier layer 12 . The composite material layer 21 may also be located between the second substrate layer 13 and the barrier layer 12 .

[0046] In an embodiment of the present application, at least one composite material layer 21 is located between at least one of the first substrate layer 11 and the second substrate layer 13 and the barrier layer 12; the composite material layer 21 includes a composite material body 211 and a plurality of magnetic particles 212 distributed in the composite material body 211, and the composite material body 211 includes an organic material. By pre-simulating the film layer bonding strength between the first substrate layer 11 or / and the second substrate layer 13 and the barrier layer 12, or by pre-verifying the film layer bonding strength between the first substrate layer 11 or / and the second substrate layer 13 and the barrier layer 12, in the manufacturing process of the display panel, before the composite material layer 21 is cured, the distribution of the magnetic particles 212 in the thickness direction of the composite material layer 21 can be controlled by an electric field or a magnetic field according to the film layer bonding strength between the first substrate layer 11 or / and the second substrate layer 13 and the barrier layer 12 obtained by simulation or verification, thereby reducing the difference in material properties between the first substrate layer 11 or / and the second substrate layer 13 and the barrier layer 12, and providing the composite material layer 21 between the first substrate layer 11 or / and the second substrate layer 13 and the barrier layer 12 to play a role in material property transition, thereby improving or avoiding the problem of easy peeling of the film layer in the substrate 10.

[0047] In some embodiments, Figure 3As shown, the magnetic particle 212 includes a magnetic material core 212 a and a protective shell 212 b encapsulating the magnetic material core 212 a , and the protective shell 212 b includes an organic material or an inorganic material.

[0048] For example, the material of the magnetic material core 212a may include Fe 3 O 4 , Fe 2 O 3 , FePt, CoPt and other magnetic materials. The material of the magnetic material core 212a may include at least one of iron, cobalt and nickel. The material of the magnetic material core 212a may include one or more of alloys, ferrites and intermetallic compounds. The material of the magnetic material core 212a may be carbon magnetic material.

[0049] For example, by setting the magnetic material core 212a, during the manufacturing process of the display panel, before the composite material layer 21 is solidified, the movement of the magnetic particles 212 in the thickness direction of the composite material layer 21 can be controlled by an electric field or a magnetic field, so that the magnetic particles 212 present the required distribution density in the thickness direction of the composite material layer 21.

[0050] For example, the protective shell 212 b includes an organic material or an inorganic material, which can adjust the material properties of the composite material layer 21 .

[0051] For example, when the protective shell 212 b includes an inorganic material, the material of the protective shell 212 b may be silicon nitride, silicon oxynitride, silicon oxide, or silicon dioxide.

[0052] For example, when the protective shell 212 b includes an organic material, the material of the protective shell 212 b may be resin or the like.

[0053] In some embodiments, in a direction perpendicular to the plane where the first substrate layer 11 is located, the composite material layer 21 includes a first portion 2101 and a second portion 2102, and the second portion 2102 is located on the side of the first portion 2101 close to the barrier layer 12; the concentrations of magnetic particles 212 in at least one composite material layer 21 are different in the first portion 2101 and the second portion 2102.

[0054] For example, the second portion 2102 of the composite material layer 21 contacts the barrier layer 12 , and the first portion 2101 of the composite material layer 21 contacts the first substrate layer 11 or the second substrate layer 13 .

[0055] For example, in the thickness direction of the substrate 10 (or the thickness direction of the composite material layer 21), the concentrations of the magnetic particles 212 in the composite material layer 21 are different in the first portion 2101 and the second portion 2102, so that the composite material layer 21 presents a gradual change in material properties between the first base layer 11 and / or the second base layer 13 and the barrier layer 12, so that the material properties of the first portion 2101 of the composite material layer 21 are well matched with the first base layer 11 and / or the second base layer 13, and the material properties of the second portion 2102 of the barrier layer 12 are well matched with the barrier layer 12.

[0056] For example, the concentration of the magnetic particles 212 in the composite material layer 21 is gradually changed, so that the material properties between the first substrate layer 11 and / or the second substrate layer 13 and the barrier layer 12 are gradually changed.

[0057] In some embodiments, Figure 1 As shown, at least one composite material layer 21 includes a first composite material layer 21A, and the first composite material layer 21A is located between the first substrate layer 11 and the barrier layer 12; the protective shell 212b of the magnetic particles 212 in the first composite material layer 21A includes an inorganic material, and the concentration of the magnetic particles 212 in the second portion 2102 of the first composite material layer 21A is greater than the concentration of the magnetic particles 212 in the first portion 2101.

[0058] For example, Figure 1 As shown, the protective shell 212b of the magnetic particles 212 in the first composite material layer 21A is an inorganic material, the concentration of the magnetic particles 212 in the second portion 2102 of the first composite material layer 21A is greater than the concentration of the magnetic particles 212 in the first portion 2101, the composite material body 211 is an organic material, and the concentration of the magnetic particles 212 in the second portion 2102 is relatively large, so that the contact interface between the second portion 2102 and the barrier layer 12 has more inorganic materials (the protective shell 212b of the inorganic material is in contact with the barrier layer 12), avoiding excessive mutation of material properties from the first composite material layer 21A to the barrier layer 12 (reducing the difference in material properties), thereby enhancing the bonding force between the second portion 2102 and the barrier layer 12.

[0059] For example, Figure 1As shown, the protective shell 212b of the magnetic particle 212 is an inorganic material, and the concentration of the magnetic particles 212 in the first portion 2101 is relatively small, which can make the flexibility and other properties of the first portion 2101 closer to the first substrate layer 11, avoiding excessive mutations in material properties from the first composite material layer 21A to the first substrate layer 11 (reducing the difference in material properties), and improving the uneven force phenomenon when subjected to external force. At the same time, the contact interface between the first portion 2101 and the first substrate layer 11 can have a smaller amount of inorganic material (the protective shell 212b of the inorganic material is in contact with the first substrate layer 11), avoiding excessive mutations in material properties from the first composite material layer 21A to the first substrate layer 11 (reducing the difference in material properties), thereby enhancing the bonding force between the first portion 2101 and the first substrate layer 11.

[0060] In some embodiments, Figure 2 As shown, at least one composite material layer 21 includes a first composite material layer 21A, and the first composite material layer 21A is located between the first substrate layer 11 and the barrier layer 12; the protective shell 212b of the magnetic particles 212 in the first composite material layer 21A includes an organic material, and the concentration of the magnetic particles 212 in the second portion 2102 of the first composite material layer 21A is less than the concentration of the magnetic particles 212 in the first portion 2101.

[0061] For example, Figure 2 As shown, the protective shell 212b of the magnetic particles 212 in the first composite material layer 21A is an organic material, the concentration of the magnetic particles 212 in the first portion 2101 of the first composite material layer 21A is greater than the concentration of the magnetic particles 212 in the second portion 2102, the composite material body 211 is an organic material, and the concentration of the magnetic particles 212 in the first portion 2101 is relatively large, so that there can be more organic materials at the contact interface between the first portion 2101 and the first substrate layer 11 (the protective shell 212b of the organic material is in contact with the first substrate layer 11), avoiding a sudden change in material properties from the first composite material layer 21A to the first substrate layer 11 (reducing the difference in material properties), thereby enhancing the bonding force between the first portion 2101 and the first substrate layer 11.

[0062] For example, Figure 2 As shown, the protective shell 212b of the magnetic particle 212 includes an organic material, and the concentration of the magnetic particles 212 in the second portion 2102 is relatively small, so that the flexibility and other properties of the second portion 2102 can be closer to the barrier layer 12, thereby avoiding excessive mutation of material properties from the second portion 2102 to the barrier layer 12 (reducing the difference in material properties), and improving the phenomenon of uneven force when subjected to external force.

[0063] For example, Figure 2As shown, in the manufacturing process of the display panel, before the composite material layer 21 is cured, when the magnetic particles 212 are controlled to move in the thickness direction of the composite material layer 21 by an electric field or a magnetic field, the protective shell 212b of the organic material can play a buffering role when the magnetic particles 212 collide, and can avoid the generation of protrusions and other unevenness at the interface where the second part 2102 contacts the barrier layer 12. At the same time, when the magnetic particles 212 collide with the barrier layer 12, they can play a buffering role to avoid problems such as cracks in the barrier layer 12.

[0064] In some embodiments, Figures 4 to 6 As shown, at least one composite material layer 21 (or substrate 10 ) includes a first composite material layer 21A and a second composite material layer 21B. The first composite material layer 21A is located between the first base layer 11 and the barrier layer 12 , and the second composite material layer 21B is located between the second base layer 13 and the barrier layer 12 .

[0065] For example, the first composite material layer 21A can reduce the difference in material properties between the first substrate layer 11 and the barrier layer 12 , and the peeling problem between the first substrate layer 11 and the barrier layer 12 can be prevented or improved.

[0066] For example, the second composite material layer 21B can reduce the difference in material properties between the second substrate layer 13 and the barrier layer 12 , and the peeling problem between the second substrate layer 13 and the barrier layer 12 can be prevented or improved.

[0067] In some embodiments, in a direction perpendicular to the plane where the first substrate layer 11 is located, the composite material layer 21 includes a first portion 2101 and a second portion 2102, and the second portion 2102 is located on a side of the first portion 2101 close to the barrier layer 12;

[0068] like Figure 4 As shown, in the first composite material layer 21A and the second composite material layer 21B, the protective shells 212b of the magnetic particles 212 both include inorganic materials, and the concentration of the magnetic particles 212 in the second portion 2102 is greater than the concentration of the magnetic particles 212 in the first portion 2101; or

[0069] like Figure 5 As shown, in the first composite material layer 21A and the second composite material layer 21B, the protective shells 212 b of the magnetic particles 212 both include organic materials, and the concentration of the magnetic particles 212 in the second portion 2102 is less than the concentration of the magnetic particles 212 in the first portion 2101 .

[0070] For example, in a direction perpendicular to the plane where the first base layer 11 is located, that is, in a direction perpendicular to the plane where the substrate 10 is located.

[0071] For example, in some embodiments, Figure 4 As shown, the protective shell 212b of the magnetic particles 212 in the first composite material layer 21A is an inorganic material. On the one hand, the concentration of the magnetic particles 212 in the second portion 2102 is relatively high, which can avoid the sudden change of material properties from the first composite material layer 21A to the barrier layer 12 (reduce the difference in material properties), thereby enhancing the bonding force between the second portion 2102 and the barrier layer 12. On the other hand, the concentration of the magnetic particles 212 in the first portion 2101 is relatively low, which can make the flexibility and other properties of the first portion 2101 closer to the first substrate layer 11, avoid the sudden change of material properties from the first composite material layer 21A to the first substrate layer 11 (reduce the difference in material properties), and improve the phenomenon of uneven force when subjected to external force.

[0072] For example, in some embodiments, Figure 4 As shown, the protective shell 212b of the magnetic particles 212 in the second composite material layer 21B is an inorganic material. Based on the same principle as the first composite material layer 21A, through the concentration setting of the magnetic particles 212 in the second composite material layer 21B, on the one hand, the concentration of the magnetic particles 212 in the second part 2102 is relatively large, which can avoid the sudden change of material properties from the second composite material layer 21B to the barrier layer 12 (reduce the difference in material properties), thereby enhancing the bonding force between the second part 2102 and the barrier layer 12. On the other hand, the concentration of the magnetic particles 212 in the first part 2101 is relatively small, which can make the flexibility and other properties of the first part 2101 closer to the second base layer 13, avoid the sudden change of material properties from the second composite material layer 21B to the second base layer 13 (reduce the difference in material properties), and improve the phenomenon of uneven force when subjected to external force.

[0073] For example, in some embodiments, Figure 5 As shown, the protective shell 212b of the magnetic particles 212 in the first composite material layer 21A is an organic material. By setting the concentration of the magnetic particles 212 in the first composite material layer 21A, on the one hand, it is possible to avoid sudden changes in material properties from the first composite material layer 21A to the first substrate layer 11 (reduce the difference in material properties), thereby enhancing the bonding force between the first portion 2101 and the first substrate layer 11; on the other hand, it is possible to avoid sudden changes in material properties from the second portion 2102 to the barrier layer 12 (reduce the difference in material properties), thereby improving the phenomenon of uneven force when subjected to external force.

[0074] For example, in some embodiments, Figure 5As shown, the protective shell 212b of the magnetic particles 212 in the second composite material layer 21B is an organic material. Based on the same principle as the first composite material layer 21A, by setting the concentration of the magnetic particles 212 in the second composite material layer 21B, on the one hand, it can avoid sudden changes in material properties from the second composite material layer 21B to the second substrate layer 13 (reduce the difference in material properties), thereby enhancing the bonding force between the first portion 2101 and the second substrate layer 13; on the other hand, it can avoid sudden changes in material properties from the second portion 2102 to the barrier layer 12 (reduce the difference in material properties), and when subjected to external force, the phenomenon of uneven force can be improved.

[0075] In some embodiments, Figure 6 and Figure 7 As shown, the protective shell 212 b of the magnetic particle 212 in the first composite material layer 21A is one of an organic material and an inorganic material, and the protective shell 212 b of the magnetic particle 212 in the second composite material layer 21B includes the other of an organic material and an inorganic material.

[0076] For example, the substrate 10 can be used for a folding display panel, the folding display panel can be folded inward, the folding display panel can be folded outward, the folding display panel has different folding areas that can be folded outward and inward respectively, and by setting the protective shell 212b of the magnetic particles 212 in the first composite material layer 21A to be one of an organic material and an inorganic material, and the protective shell 212b of the magnetic particles 212 in the second composite material layer 21B to be the other of an organic material and an inorganic material, the substrate 10 can be applied to display panels with different folding directions, and display panels with different folding directions can be selected by verification or simulation methods. Figure 6 and Figure 7 Different substrates 10.

[0077] In some embodiments, Figure 6 and Figure 7 As shown, in a direction perpendicular to the plane where the first substrate layer 11 is located, the composite material layer 21 includes a first portion 2101 and a second portion 2102, and the second portion 2102 is located on a side of the first portion 2101 close to the barrier layer 12;

[0078] The protective shell 212b of the magnetic particle 212 in the first composite material layer 21A includes an inorganic material, and the concentration of the magnetic particle 212 in the second portion 2102 of the first composite material layer 21A is greater than the concentration of the magnetic particle 212 in the first portion 2101;

[0079] The protective shells 212 b of the magnetic particles 212 in the second composite material layer 21B include organic materials, and the concentration of the magnetic particles 212 in the second portion 2102 of the second composite material layer 21B is lower than the concentration of the magnetic particles 212 in the first portion 2101 .

[0080] For example, Figure 6 As shown, the protective shells 212 b of the magnetic particles 212 in the first composite material layer 21A are made of inorganic materials, and the protective shells 212 b of the magnetic particles 212 in the second composite material layer 21B are made of organic materials.

[0081] For example, in some embodiments, Figure 7 As shown, the protective shells 212 b of the magnetic particles 212 in the first composite material layer 21A are made of organic material, and the protective shells 212 b of the magnetic particles 212 in the second composite material layer 21B are made of inorganic material.

[0082] See also Figure 8 , Figure 8 A schematic diagram of a display panel provided for some embodiments of the present application.

[0083] On the second aspect, based on the same application concept, the present application also provides a display panel 100, the display panel 100 includes any one of the above-mentioned substrates 10, or the display panel 100 includes a substrate 10 combining any several of the above-mentioned features.

[0084] For example, the substrate 10 is a component of the display panel 100, and the display panel 100 includes the substrate 10 and a plurality of light-emitting devices disposed on one side of the substrate 10. The plurality of light-emitting devices may be disposed on a side of the first base layer 11 away from the second base layer 13, or the plurality of light-emitting devices may be disposed on a side of the second base layer 13 away from the first base layer 11. The display panel 100 is not limited to an organic light-emitting diode (OLED) display panel, and the display panel 100 may also be other types of display panels.

[0085] For example, Figure 8 As shown, the display panel 100 may include a display area AA and a non-display area BB surrounding the display area AA.

[0086] See also Fig. 9 , Fig. 9 A schematic diagram of a display device provided in some embodiments of the present application.

[0087] On the third aspect, based on the same application concept, the present application also provides a display device 200, the display device 200 includes any one of the display panels 100 described above, or the display device 200 includes a display panel 100 that combines any several of the features described above.

[0088] For example, the display device 200 also has the beneficial effects of the display panel 100 in the above embodiment. The similarities can be understood by referring to the above explanation of the display panel 100 and will not be described in detail below.

[0089] For example, the display device 200 provided in the embodiment of the present application can be Fig. 9 The mobile phone shown can also be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, industrial control equipment, medical display screens, touch interactive terminals, etc. The embodiments of the present application do not specifically limit this.

[0090] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A substrate, characterized in that: include: first basal layer; a barrier layer, located on one side of the first substrate layer; a second substrate layer, located on a side of the barrier layer away from the first substrate layer; at least one composite material layer disposed between at least one of the first substrate layer and the second substrate layer and the barrier layer; The composite material layer includes a composite material body and a plurality of magnetic particles distributed in the composite material body, wherein the composite material body includes an organic material.

2. The substrate according to claim 1, characterized in that The magnetic particles include a magnetic material core and a protective shell surrounding the magnetic material core, wherein the protective shell includes an organic material or an inorganic material.

3. The substrate according to claim 2, characterized in that In a direction perpendicular to the plane where the first substrate layer is located, the composite material layer includes a first portion and a second portion, and the second portion is located on a side of the first portion close to the barrier layer; The concentration of the magnetic particles in at least one of the composite material layers is different in the first region and the second region.

4. The substrate according to claim 3, characterized in that The at least one composite material layer comprises a first composite material layer, the first composite material layer being located between the first substrate layer and the barrier layer; The protective shells of the magnetic particles in the first composite material layer include an inorganic material, and the concentration of the magnetic particles in the second portion of the first composite material layer is greater than the concentration of the magnetic particles in the first portion.

5. The substrate according to claim 3, characterized in that The at least one composite material layer comprises a first composite material layer, the first composite material layer being located between the first substrate layer and the barrier layer; The protective shells of the magnetic particles in the first composite material layer include organic materials, and the concentration of the magnetic particles in the second portion of the first composite material layer is lower than the concentration of the magnetic particles in the first portion.

6. The substrate according to claim 2, characterized in that The at least one composite material layer includes a first composite material layer and a second composite material layer. The first composite material layer is located between the first substrate layer and the barrier layer. The second composite material layer is located between the second substrate layer and the barrier layer.

7. The substrate according to claim 6, characterized in that In a direction perpendicular to the plane where the first substrate layer is located, the composite material layer includes a first portion and a second portion, and the second portion is located on a side of the first portion close to the barrier layer; In the first composite material layer and the second composite material layer, the protective shells of the magnetic particles include inorganic materials, and the concentration of the magnetic particles in the second portion is greater than the concentration of the magnetic particles in the first portion; or In the first composite material layer and the second composite material layer, the protective shells of the magnetic particles both include organic materials, and the concentration of the magnetic particles in the second portion is lower than the concentration of the magnetic particles in the first portion.

8. The substrate according to claim 6, characterized in that The protective shells of the magnetic particles in the first composite material layer are one of an organic material and an inorganic material, and the protective shells of the magnetic particles in the second composite material layer are the other of an organic material and an inorganic material.

9. The substrate according to claim 8, characterized in that In a direction perpendicular to the plane where the first substrate layer is located, the composite material layer includes a first portion and a second portion, and the second portion is located on a side of the first portion close to the barrier layer; The protective shells of the magnetic particles in the first composite material layer include an inorganic material, and the concentration of the magnetic particles in the second portion of the first composite material layer is greater than the concentration of the magnetic particles in the first portion; The protective shells of the magnetic particles in the second composite material layer include organic materials, and the concentration of the magnetic particles in the second portion of the second composite material layer is lower than the concentration of the magnetic particles in the first portion.

10. A display panel, characterized in that: Comprising the substrate according to any one of claims 1 to 9.

11. A display device, characterized in that: Comprising the display panel as claimed in claim 10.

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