Display module, display equipment and screen protection film

Abstract

The embodiment of the invention provides a display module, display equipment and a screen protection film. Relates to the technical field of display. According to the display module, the screen protection film in the display module has high modulus and strength. The display module comprises a display screen and a composite layer, wherein the composite layer is arranged on one side of a display surface of the display screen; the composite layer comprises a resin base material and fiber lines arranged in the resin base material, and the difference value between the refractive index of the resin base material and the refractive index of the fiber line material is smaller than or equal to 0.1. According to the display module, the composite layer is used as the screen protection layer, and due to the fact that the fibers and the resin have large modulus and high strength, for example, the tensile modulus E is larger than or equal to 10 Gpa and smaller than or equal to 100 Gpa, the extrusion resistance and impact resistance of the display module can be obviously improved, and the optical performance of the display module can be met.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display module, a display device including the display module, and a screen protective film that can be applied to the display device. Background Art

[0002] With the development of human-computer interaction technology, display has become an important element of human-computer interaction. Therefore, foldable screen display devices have come into being, such as foldable mobile phones.

[0003] In order to achieve bendability, the folding screen cannot use the ultra-thick glass cover of the conventional straight screen, but must use polymer materials or ultra-thin flexible glass (Ultra-Thin Glass, UTG) as the laminated material to protect the screen.

[0004] There are some existing technologies, such as Figure 1 As shown in the figure, optically clear adhesive (OCA) is used to stick the ultra-thin flexible glass UTG between the display panel and the substrate (CPI or PET). The upper and lower interfaces of the ultra-thin flexible glass UTG require thick OCA bonding, resulting in a larger thickness of the entire module, and the good rigidity of the ultra-thin flexible glass UTG cannot be fully utilized, reducing the module's anti-extrusion and anti-impact performance. Summary of the invention

[0005] The present application provides a display module, a display device including the display module, and a screen protective film that can be used in the display device. The purpose is to provide a screen protective film with high modulus and strength. When the screen protective film is used in the display module, the modulus and strength can be improved, and the thickness of the display module can be reduced.

[0006] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0007] On the one hand, the present application provides a display module, which can be used in a folding machine or a straight-screen machine.

[0008] The display module includes: a display screen and a first composite layer, wherein the first composite layer is arranged on one side of the display surface of the display screen; the first composite layer includes: a first resin substrate and a first fiber line arranged in the first resin substrate, and the difference between the refractive index of the first resin substrate material and the refractive index of the first fiber line material is less than or equal to 0.1.

[0009] In the display module provided in the present application, a structure including a resin layer and a fiber layer is used as a screen protection structure, which is arranged on one side of the display surface of the display screen; since the fiber and the resin have a large modulus and a high strength, for example, the tensile modulus can reach 10Gpa≤E≤100Gpa, the anti-extrusion and anti-impact properties of the display module can be significantly improved; since the fiber and the resin have the characteristics of large modulus and high strength, in some display modules, it is not necessary to set a substrate on one side of the composite layer, so that the thickness of the entire display module can be thinned, and the difference between the refractive index of the resin substrate material and the refractive index of the fiber line material is less than or equal to 0.1, which can ensure that the texture of the fiber in the composite layer cannot be seen from the appearance, and optically speaking, the fiber and the resin are integrated to meet the optical performance requirements of the composite layer, ensuring that the composite layer can be applied above the screen.

[0010] In a possible implementation manner, the tensile modulus E of the first composite layer is: 10 Gpa≤E≤100 Gpa; and / or the light transmittance of the first composite layer is greater than or equal to 85%.

[0011] The composite layer has a larger modulus, higher strength, and meets the optical performance requirements.

[0012] In a possible implementation, the refractive index n of the first composite layer is: 1.45≤n≤1.65; and / or the haze of the first composite layer is less than or equal to 5%.

[0013] In a possible implementation manner, the elongation at break of the first fiber line is greater than or equal to 3%.

[0014] The display module is used in folding display devices, and the fibers will basically not break.

[0015] In one possible implementation, the first fiber line includes a plurality of first sub-fiber lines extending along a first direction, and a plurality of second sub-fiber lines extending along a second direction, the first direction intersecting the second direction; the display screen is folded along a folding axis, and the folding axis is parallel to the first direction.

[0016] In this example, the display module is used in a foldable display device. In order to match the bendability of the display module, the first sub-fiber line can be parallel to the folding axis.

[0017] In some other examples, they may not be parallel, and there is a smaller angle between the first sub-fiber line and the folding axis.

[0018] In a possible implementation, the fiber lines are multiple layers, and the multiple layers of fiber lines are arranged at intervals along the thickness direction of the first composite layer.

[0019] By setting up multiple layers of fiber lines, the modulus of the entire display module can be further improved, and the impact resistance and extrusion resistance can be improved.

[0020] In one possible implementation, the display module also includes a first glass layer; the first glass layer is arranged on the display surface side of the display screen; the first glass layer includes a first surface and a second surface, the first surface faces the display screen, and the second surface faces away from the display screen; a first composite layer is arranged on the first surface of the first glass layer and / or on the second surface of the first glass layer.

[0021] In the display module provided by the present application, since a composite layer is provided on at least one of the two opposite surfaces of the glass layer, the composite layer is utilized to protect the glass layer. When the glass layer is shattered by impact, the shattered glass can be easily torn off from the display module under the protection of the composite layer, and the shattered glass will basically not leak out and prick your hands.

[0022] In addition, the composite layer of this example includes resin and fiber lines. The fiber has a relatively high modulus, which can improve the modulus and strength of the entire display module, and improve the impact resistance and extrusion resistance of the display module.

[0023] In a possible implementation, the display module further includes a first substrate; a first composite layer is disposed on the second surface of the first glass layer; and the first substrate is disposed on the first composite layer on the second surface of the first glass layer via an adhesive layer.

[0024] In a possible implementation, the display module further includes a first substrate; a first composite layer is disposed on a first surface of the first glass layer; and the first substrate is disposed on a second surface of the first glass layer via an adhesive layer.

[0025] In the above two examples, a substrate may also be included, and the easily broken glass layer is arranged between the substrate and the display screen, and the substrate can be used to further protect the glass.

[0026] In one possible implementation, the display module also includes a protective layer, which is arranged on the side of the first composite layer away from the display screen, and the protective layer includes a second composite layer, and the second composite layer is arranged on the first composite layer through an adhesive layer; the second composite layer includes: a second resin substrate and a second fiber line arranged in the second resin substrate, the difference between the refractive index of the second resin substrate material and the refractive index of the second fiber line material is less than or equal to 0.1, and the second composite layer serves as the surface layer of the display module.

[0027] In this implementation structure, a composite layer is used as a screen protection structure. Since the composite layer contains fibers and resins with a relatively high modulus, the strength and modulus of the display module can be guaranteed, and the thickness of the entire display module can be reduced to improve the flatness of the display module.

[0028] In one possible implementation, the display module also includes a protective layer, which is arranged on the side of the first composite layer away from the display screen, and the protective layer includes a second glass layer and a second composite layer; the second glass layer includes a third surface and a fourth surface, the third surface faces the first composite layer, the fourth surface faces away from the first composite layer, and the second composite layer is arranged on the third surface of the second glass layer and / or the fourth surface of the second glass layer; the second composite layer includes: the second composite layer includes: a second resin substrate and a second fiber wire arranged in the second resin substrate, and the difference between the refractive index of the second resin substrate material and the refractive index of the second fiber wire material is less than or equal to 0.1.

[0029] By providing a composite layer on the surface of the glass layer of the protective layer, that is, using the composite layer to protect the glass layer, when the glass is shattered by impact, under the protection of the composite layer, the shattered glass in the second screen protective layer can be easily torn off from the display module, and the shattered glass will basically not leak out and prick your hands.

[0030] In a possible implementation manner, a second composite layer is disposed on the fourth surface of the second glass layer; the second composite layer serves as a surface layer of the display module.

[0031] In this implementation structure, since the composite layer contains fibers and resins with relatively high modulus, the strength and modulus of the display module can be guaranteed, and the thickness of the entire display module can be reduced, thereby improving the flatness of the display module.

[0032] In one possible implementation, the protective layer also includes a second substrate; a second composite layer is arranged on the fourth surface of the second glass layer; the second substrate is arranged on the second composite layer on the fourth surface of the second glass layer through an adhesive layer; and the second substrate serves as the surface layer of the display module.

[0033] In one possible implementation, the protective layer also includes a second substrate; a second composite layer is disposed on the third surface of the second glass layer; the second substrate is disposed on the fourth surface of the second glass layer via an adhesive layer; and the second substrate serves as the surface layer of the display module.

[0034] The second glass layer can be protected by the second substrate, and the second substrate can be used as a surface structure of the display module.

[0035] On the other hand, the present application provides a display device, which includes a housing, and a display module of any of the above-mentioned implementations, wherein the display module is disposed on the housing.

[0036] In the display device provided in the present application, since the display module includes a resin substrate and fiber wires arranged in the resin substrate, and since the fiber and the resin have a large modulus and a high strength, the anti-extrusion and anti-impact properties of the display module can be improved; since the fiber and the resin have the characteristics of a large modulus and a high strength, in some display modules, it is not necessary to set a substrate on one side of the composite layer, so that the thickness of the entire display module can be reduced, and the thickness of the display device can be reduced.

[0037] In one possible implementation, the shell includes a first shell and a second shell; the display device also includes a hinge mechanism, and the first shell and the second shell are arranged on both sides of the hinge mechanism; the first shell and the second shell move toward or away from each other through the hinge mechanism, so that the display module is switched between a flattened state and a closed state.

[0038] The display device is a foldable display device.

[0039] In another aspect, the present application provides a screen protective film, which can be used in a display device and is arranged on a display surface side of a display screen in the display device. The screen protective film comprises: a resin substrate and fiber lines arranged in the resin substrate; the difference between the refractive index of the resin substrate material and the refractive index of the fiber line material is less than or equal to 0.1.

[0040] The screen protection film provided in the present application, the resin and the fiber have high modulus and strength, and when applied to the display module of the display device, the anti-extrusion and anti-impact performance of the display module can be improved. In addition, since the refractive index of the resin substrate material is n1, the refractive index of the fiber line material is n2, |n1-n2|≤0.1, the optical performance requirements of the display module can be met.

[0041] In a possible implementation, the tensile modulus E of the screen protective film is: 10 Gpa ≤ E ≤ 100 Gpa; and / or the light transmittance T of the screen protective film is: T ≥ 85%.

[0042] The protective layer has a larger modulus, higher strength, and meets the optical performance requirements.

[0043] In a possible implementation, the refractive index n of the screen protective film is: 1.45≤n≤1.65; and / or the haze S of the screen protective film is: S≤5%.

[0044] In a possible implementation manner, the breaking elongation of the fiber line is greater than or equal to 3%.

[0045] The display module is used in folding display devices, and the fibers will basically not break.

[0046] In a possible implementation, the fiber lines are multiple layers, and the multiple layers of fiber lines are arranged at intervals along the thickness direction of the screen protective film.

[0047] By arranging multiple layers of fiber lines, the modulus of the entire protective film layer can be further improved, and the impact resistance and extrusion resistance can be improved.

[0048] In a possible implementation, the screen protection film further includes a glass layer; the glass layer has a first surface and a second surface facing back to back, and a resin substrate containing fiber lines is disposed on at least one of the first surface and the second surface.

[0049] In a possible implementation, the screen protection film further includes a substrate; a resin substrate containing fiber lines is disposed on the first surface of the glass; and the substrate is disposed on the resin substrate on the first surface of the glass via an adhesive layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a structural schematic diagram of a display module in the prior art;

[0051] Figure 2 A schematic diagram of the structure of a display device provided in an embodiment of the present application;

[0052] Figure 3 A schematic diagram of the structure of a composite layer provided in an embodiment of the present application;

[0053] Figure 4 A schematic diagram of the structure of a composite layer provided in an embodiment of the present application;

[0054] Figure 5 A top view of a composite layer provided in an embodiment of the present application;

[0055] Figure 6 A top view of a composite layer provided in an embodiment of the present application;

[0056] Figure 7 A schematic diagram of the structure of a screen protection film provided in an embodiment of the present application;

[0057] Figure 8 A schematic diagram of the structure of a display module provided in an embodiment of the present application;

[0058] Fig. 9 A schematic diagram of a structure for displaying a first screen protective film in a display module provided in an embodiment of the present application;

[0059] Fig.10 A schematic diagram of a structure for displaying a first screen protective film in a display module provided in an embodiment of the present application;

[0060] Fig.11A schematic diagram of a structure for displaying a first screen protective film in a display module provided in an embodiment of the present application;

[0061] Fig.12 A schematic diagram of a structure for displaying a first screen protective film in a display module provided in an embodiment of the present application;

[0062] Fig.13 A schematic diagram of a structure for displaying a first screen protective film in a display module provided in an embodiment of the present application;

[0063] Fig.14 A schematic diagram of a structure for displaying a first screen protective film in a display module provided in an embodiment of the present application;

[0064] Fig.15 A schematic diagram of a structure for displaying a first screen protective film in a display module provided in an embodiment of the present application;

[0065] Fig.16 A schematic diagram of a structure for displaying a second screen protective film in a display module provided in an embodiment of the present application;

[0066] Fig.17 A schematic diagram of a structure for displaying a second screen protective film in a display module provided in an embodiment of the present application;

[0067] Fig.18 A schematic diagram of a structure for displaying a second screen protective film in a display module provided in an embodiment of the present application;

[0068] Fig.19 A schematic diagram of a structure for displaying a second screen protective film in a display module provided in an embodiment of the present application;

[0069] Fig. 20 A schematic diagram of a structure for displaying a second screen protective film in a display module provided in an embodiment of the present application;

[0070] Fig.21 A schematic diagram of a structure for displaying a second screen protective film in a display module provided in an embodiment of the present application;

[0071] Fig. 22 A schematic diagram of the structure of a display module for displaying a first screen protective film and a second screen protective film provided in an embodiment of the present application;

[0072] Fig.23 A schematic diagram of the structure of a display module for displaying a first screen protective film and a second screen protective film provided in an embodiment of the present application;

[0073] Fig.24A schematic diagram of the structure of a display module for displaying a first screen protective film and a second screen protective film provided in an embodiment of the present application;

[0074] Fig.25 A schematic diagram of the structure of a display module for displaying a first screen protective film and a second screen protective film provided in an embodiment of the present application;

[0075] Fig.26 A schematic diagram of the structure of a display module for displaying a first screen protective film and a second screen protective film provided in an embodiment of the present application;

[0076] Fig. 27 A schematic diagram of the structure of a display module for displaying a first screen protective film and a second screen protective film provided in an embodiment of the present application;

[0077] Fig.28 A schematic structural diagram of a display module provided in an embodiment of the present application for displaying a first screen protective film and a second screen protective film.

[0078] Reference numerals:

[0079] 100a-first housing; 100b-second housing; 11-display module;

[0080] 1-support plate; 2-display screen; 3A-first screen protective film; 3B-second screen protective film; 4-adhesive layer;

[0081] 31-composite layer; 32-glass; 33-substrate; 34-adhesive layer;

[0082] 311-resin substrate; 312-fiber thread. DETAILED DESCRIPTION

[0083] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0084] An embodiment of the present application provides a display device, which may be a foldable display device or a non-foldable straight display device.

[0085] The display device may include a mobile phone, a tablet computer (pad), a smart wearable product (e.g., a smart watch, a smart bracelet), a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, and other electronic products with display functions. The embodiments of the present application do not impose any special restrictions on the specific form of the above-mentioned display device with display function.

[0086] For the convenience of explanation, the structure of the display device is described below by taking a display device mobile phone as an example.

[0087] Figure 2 The structure diagram of a foldable screen mobile phone is shown, and the foldable mobile phone includes a first shell 100a, a second shell 100b, a display module 11 and a hinge mechanism. The display module 11 can be continuously covered on the first shell 100a and the second shell 100b. The first shell 100a and the second shell 100b are arranged on both sides of the hinge mechanism and are respectively connected to the hinge mechanism. Under the action of the hinge mechanism, the display module 11 can be flattened and closed.

[0088] Figure 2 In the foldable display device shown, or in the non-foldable straight-panel display device, the display module 11 may include a display screen and a screen protective film for protecting the display screen.

[0089] As a protective structure for the display screen, the screen protector has a high modulus and strength, which makes the display module resistant to impact and extrusion. The thickness cannot be too thick. For example, when used in a folding machine, it cannot affect the bendability of the setting.

[0090] like Figure 3 , Figure 3 The screen protection film is a structure of a screen protection film provided in an embodiment of the present application. The screen protection film is a composite layer structure, and the composite layer may include a resin substrate 311 and at least one layer of fiber lines 312 disposed in the resin substrate 311 .

[0091] In some examples, Figure 3 As shown, a layer of fiber wire 312 is provided in the resin substrate 311. Figure 4 As shown, two layers or even more layers of fiber lines 312 are arranged in the resin matrix 311, for example, three layers are arranged.

[0092] When multiple layers of fiber lines 312 are provided in the resin matrix 311 , the multiple layers of fiber lines 312 may be arranged at intervals along the thickness direction of the resin matrix 311 , and the space between two adjacent layers of fiber lines is filled with the resin matrix.

[0093] When the resin substrate 311 has multiple layers of fiber lines 312 , the spacing between two adjacent layers of fiber lines 312 may be equal or unequal. For example, the spacing between two adjacent layers of fiber lines 312 may be 1 μm to 130 μm.

[0094] The composite layer used as the screen protection layer in the example of the present application includes a resin substrate and fiber lines arranged in the resin substrate, forming a composite laminate of resin and fiber. After the fiber and resin are integrated, the tensile modulus E can reach: 10Gpa≤E≤100Gpa, which is significantly improved compared to 30Gpa to 40Gpa in the prior art. When the composite layer is used in a display module, it can improve the modulus and strength of the entire display module, and improve the mechanical properties of the module such as anti-extrusion and anti-impact.

[0095] Figure 3 and Figure 4 When the exemplary screen protection film is applied to a display module, it also needs to meet optical performance requirements.

[0096] For example, in the example of the present application, the refractive index n of the composite layer satisfies: 1.45≤n≤1.65.

[0097] The refractive index of the resin substrate material is n1, and n1 may be 1.42-1.65. For example, the refractive index of the resin substrate material may be 1.45, 1.50, 1.55, etc. The refractive index of the fiber line material is n2, and n2 may be 1.42-1.65. For example, the refractive index of the resin substrate may be 1.45, 1.55, 1.65, etc.

[0098] In some examples, the difference between the refractive index n1 of the resin matrix material and the refractive index n2 of the fiber wire material is less than or equal to 0.1, that is, |n1-n2|≤0.1 is satisfied. In some examples, the refractive index of the resin matrix material is greater than the refractive index of the fiber wire material, and in other examples, the refractive index of the resin matrix material is less than the refractive index of the fiber wire material.

[0099] When |n1-n2|≤0.1, the fiber texture is basically invisible when observing the screen protective film from the appearance, and the resin and the fiber are basically completely integrated into one, which meets the optical indicators of being applied above the display screen.

[0100] In order to ensure the light transmittance, the light transmittance T of the composite layer is: T≥85%. For example, T=85%, T=90%, T=95%. The haze S of the composite layer is: S≤5%, for example, S=5%, S=3%, S=2%.

[0101] The materials that can be selected for the resin substrate include at least one of epoxy resin, polyurethane, acrylate, silicone resin, polycarbonate, and polymethyl methacrylate.

[0102] The fiber line may be made of at least one of organic fiber and inorganic fiber. For example, it may be at least one of ultra-high molecular weight polyethylene fiber, polyimide fiber, and glass fiber; the glass fiber may be at least one of E glass fiber, S glass fiber, and C glass fiber.

[0103] For example, when glass fiber is selected as the material of the fiber line, the diameter of the glass fiber can be 2 μm-100 μm. For example, the diameter of the glass fiber can be 2 μm-20 μm, or can be 5 μm-60 μm.

[0104] The length of the glass fibers may be greater than or equal to 5 cm.

[0105] In order to improve the bendability of the composite layer, the elongation at break of the fiber line may be greater than or equal to 3%, so that when the composite layer is bent, the fiber will not basically break.

[0106] In some examples, the mass ratio of the fiber line can be 5% to 80%. The mass ratio of the fiber line in this example can be considered as the ratio of the mass of the fiber line to the mass of the fiber line and the resin substrate. This can ensure the bendability of the composite layer, as well as the impact resistance and extrusion resistance.

[0107] Figure 5 and Figure 6 Two different structures of the fiber line 312 are exemplarily shown. Figure 5 and Figure 6 A top view of the composite layer is shown. Figure 5 and Figure 6 In the embodiment, the fiber lines 312 are in a grid shape and can be referred to as a fiber fabric.

[0108] Will Figure 5 and Figure 6 When the fiber line structure is used in a folding display device, for example, the folding axis of the folding display device is along Figure 5 and Figure 6 L direction shown.

[0109] exist Figure 5 In the embodiment, the fiber line 312 includes a plurality of first sub-fiber lines extending in a first direction and a plurality of second sub-fiber lines extending in a second direction, and the first sub-fiber lines and the second sub-fiber lines intersect, for example, orthogonally. The extension direction of the first sub-fiber lines may be parallel to the folding axis L, and the extension direction of the second sub-fiber lines may be perpendicular to the folding axis L. In this way, the bendability of the display module can be improved, and in particular, wrinkles can be avoided at the bend portion.

[0110] exist Figure 6In the embodiment, the fiber line 312 includes a plurality of first sub-fiber lines and a plurality of second sub-fiber lines, and the first sub-fiber line and the second sub-fiber line are orthogonal. The first sub-fiber line is inclined relative to the folding axis L, and the second sub-fiber line is inclined relative to the folding axis L. The first sub-fiber line has an angle not equal to zero relative to the folding axis, and the second sub-fiber line has an angle not equal to zero relative to the folding axis. In some examples, the angle between the first sub-fiber line and the folding axis can be less than or equal to 45°. For example, it can be 30°, 20° or 15°.

[0111] See Figure 5 and Figure 6 In the fiber line 312, the distance between each two adjacent sub-fiber lines may be 1 μm to 1000 μm. The distance between each two adjacent sub-fiber lines may be equal or unequal.

[0112] In some examples, such as Figure 7 The screen protection film provided in the present application may further include a glass layer 32 , wherein the glass layer 32 has a first surface and a second surface arranged back to back.

[0113] On at least one of the first surface and the second surface of the glass layer 32, a composite layer 31 including a resin matrix 311 and fiber strands 312 is provided. Figure 7 In the embodiment, the composite layer 31 is disposed on both the first surface and the second surface of the glass layer 32. For another example, the composite layer 31 may be disposed on the first surface of the glass layer 32, but not on the second surface. For another example, the composite layer 31 may be disposed on the second surface of the glass layer 32, but not on the first surface.

[0114] In the process steps that can be realized, Figure 7 A liquid resin material is applied to one surface of the glass layer 32; a fiber line is placed on the resin material; a liquid resin material is applied to the surface; and the liquid resin material is cured to obtain a fiber line. Figure 7 The structure shown comprises a resin matrix and a fiber line structure laid in the resin matrix.

[0115] In some examples, a liquid resin material with a thickness of 1 μm-135 μm can be coated on one surface of the glass layer 32; a fiber line is then disposed on the resin material; a liquid resin material with a thickness of 1 μm-135 μm is then coated; and a curing treatment is performed to obtain a composite layer with a thickness of approximately 20 μm-150 μm.

[0116] The glass layer 32 may be an ultra-thin flexible glass (UTG) with bendable properties. The strengthening depth of the ultra-thin flexible glass UTG is very small, and it will easily break into sharp glass slag after cracking. When the broken ultra-thin flexible glass UTG needs to be torn off, the ultra-thin flexible glass UTG fragments cannot be completely torn off, and may even cause hand prickliness.

[0117] See Figure 7 As shown, in the screen protective film provided in the present application, a composite layer is coated on at least one surface of the glass layer, and the composite layer serves as a protective layer for the glass layer. When the glass layer is shattered by impact, under the protection of the composite layer, glass slag will basically not leak out, thereby preventing the glass fragments from piercing the hands, and when the shattered glass layer is torn off, it can basically be torn off smoothly.

[0118] like Figure 8 , Figure 8 1 is a schematic diagram of a display module of an example of the present application. The display module comprises: a support plate (bracket) 1 and a display screen (panel) 2. The support plate 1 is located on the back side of the display screen 2 and serves as a support structure for supporting the display screen 2.

[0119] In order to protect the display screen 2 , the display module further includes a first screen protection film 3A. The first screen protection film 3A is located on one side of the display surface of the display screen 2 , and the first screen protection film 3A can be attached to the display screen 2 via an adhesive layer 4 .

[0120] See Figure 8 The display module may further include a second screen protective film 3B, which is disposed on the first screen protective film 3A through an adhesive layer 4. The use of multi-layer screen protection can further reduce the probability of the display screen 2 being damaged. For example, in some scenarios, when the second screen protective film 3B has no protective function due to fragmentation, the second screen protective film 3B can be torn off, and the display screen 2 can be effectively protected by the first screen protective film 3A.

[0121] The display surface of the display screen 2 involved in the embodiment of the present application refers to the side of the display screen 2 used to display the picture to the user, and the back side of the display screen 2 refers to the side opposite to the display surface of the display screen 2, that is, the display surface and the back side of the display screen 2 are back to back.

[0122] In the example of the present application, the display screen 2 can be but is not limited to an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (mini organic light-emitting diode) display screen, a micro organic light-emitting diode (micro organic light-emitting diode) display screen, a micro organic light-emitting diode (micro organic light-emitting diode) display screen, a quantum dot light emitting diode (QLED) display screen, etc.

[0123] This application example Figures 3 to 7 The screen protector shown can be applied on Figure 8 In at least one of the first screen protective film 3A or the second screen protective film 3B.

[0124] Below is a diagram of the Figure 8 The structures that can be realized by the first screen protective film 3A and the second screen protective film 3B are respectively introduced in detail.

[0125] like Fig. 9 , Fig.10 and Fig.11 , Figures 9 to 11 The structure of the first screen protective film 3A is shown as an example. The first screen protective film 3A includes a glass layer 32. When the display device is a foldable display device, the glass layer 32 may be an ultra-thin flexible glass layer UTG, and when the display device is a non-foldable straight display device, the glass layer 32 may be a thicker glass layer with higher strength.

[0126] like Figures 9 to 11 , the first surface of the glass layer 32 is closer to the display screen 2 than the second surface. Fig. 9 In the embodiment, the composite layer 31 is disposed on both the first surface and the second surface of the glass layer 32. Fig.10 In the embodiment, a composite layer 31 is disposed on the first surface of the glass layer 32, and no composite layer 31 is disposed on the second surface. Fig.11 In the embodiment, the composite layer 31 is disposed on the second surface of the glass layer 32, and the composite layer 31 is not disposed on the first surface.

[0127] See also Figures 9 to 11In the example of the present application, the first screen protection film 3A further includes a substrate 33 , and the second screen protection film 3B can be attached to the substrate 33 via an adhesive layer 4 .

[0128] There are many materials that can be selected for the substrate 33, for example, at least one of polyethylene terephthalate (PET), polyimide (PI), and transparent polyimide (CPI) can be selected.

[0129] The adhesive layer 4 may be made of at least one of an optically clear adhesive (OCA) and an optically clear resin (OCR).

[0130] exist Fig. 9 and Fig.11 In the embodiment, the glass layer 32 has a composite layer 31 on the second surface, and the substrate 33 can be attached to the composite layer 31 on the second surface via an adhesive layer 34 .

[0131] exist Fig.10 In the embodiment, the glass layer 32 has a composite layer 31 on its first surface, and no composite layer 31 is provided on its second surface. The substrate 33 may be attached to the glass layer 32 via an adhesive layer 34 .

[0132] Fig. 9 and Fig.11 In the example, the first screen protection film 3A includes a substrate 33, and the glass layer 32 is stacked between the substrate 33 and the display screen 2. The substrate 33 can further protect the glass layer 32 to prevent the glass from being pricked when broken.

[0133] Fig.12 and Fig.13 It is a structural diagram of two other display modules provided in the embodiments of the present application. Fig.12 In the example, the first screen protection film 3A has a composite layer 31 on the second surface and has a composite layer 31 on the first surface, and the second screen protection film 3B can be attached to the composite layer 31 on the second surface through the adhesive layer 4 . Fig.13 In the example, the first screen protection film 3A has a composite layer 31 on the second surface, and no composite layer 31 is provided on the first surface. The second screen protection film 3B can be attached to the composite layer 31 on the second surface through the adhesive layer 4 .

[0134] like Fig.12 and Fig.13For example, since the composite layer including the resin substrate and the fiber line has a higher modulus, for example, the modulus can reach more than 50GPa, while ensuring that the entire display module has higher strength, better impact resistance and compression deformation resistance, the thickness of the entire display module can also be reduced.

[0135] exist Fig.12 and Fig.13 In the example, some adhesive layer structures can be omitted, which can improve the flatness of the display module.

[0136] Fig.14 and Fig.15 3 is a structural diagram of two other display modules provided in the embodiments of the present application. In the two exemplary display modules, the first screen protection film 3A may not include a glass layer, but includes a composite layer 31 .

[0137] exist Fig.14 In the embodiment, the first screen protection film 3A includes a composite layer 31, and the composite layer 31 is arranged between the display screen 2 and the second screen protection film 3B via the adhesive layer 4.

[0138] exist Fig.15 In the figure, the first screen protection film 3A includes a multi-layer composite layer 31, and two adjacent composite layers 31 are bonded together by an adhesive layer 34. The stacked multi-layer composite layers 31 are further arranged between the display screen 2 and the second screen protection film 3B by an adhesive layer 4.

[0139] exist Fig.14 and Fig.15 In the example, the composite layer is used as a screen protection film and is arranged on the display surface side of the display screen. Since the composite layer has a high modulus and a large strength, it can protect the display screen and also reduce the thickness of the display module.

[0140] The above-mentioned structure that can be realized by the first screen protection film 3A is shown by using a plurality of structural diagrams. The following describes the structure that can be realized by the second screen protection film 3B in combination with the accompanying drawings.

[0141] like Fig.16 , Fig.16 The structure of a second screen protective film 3B is shown, and the second screen protective film 3B includes a glass layer 32. When the display device is a foldable display device, the glass layer 32 can be an ultra-thin flexible glass UTG, and when the display device is a non-foldable straight display device, the glass layer 32 can be a thicker and stronger glass layer.

[0142] The glass layer 32 of the second screen protection film 3B can be made of the same material as the glass layer 32 of the first screen protection film 3A.

[0143] The glass layer 32 of the second screen protective film 3B may have the same thickness as the glass layer 32 of the first screen protective film 3A. Alternatively, in some examples, the glass layer 32 of the second screen protective film 3B is closer to the surface of the display module than the glass layer 32 of the first screen protective film 3A, and the thickness of the glass layer 32 of the second screen protective film 3B may be greater than the thickness of the glass layer 32 of the first screen protective film 3A.

[0144] like Fig.16 In the second screen protection film 3B, the glass layer 32 has a third surface facing the first screen protection film 3A, and a fourth surface facing away from the first screen protection film 3A. It can be understood that the third surface and the fourth surface are arranged back to back.

[0145] A composite layer 31 is disposed on at least one of the third surface and the fourth surface of the glass layer 32. Fig.16 In the embodiment, the composite layer 31 is disposed on the third surface and the fourth surface of the glass layer 32. Fig.17 In the embodiment, the composite layer 31 is disposed on the third surface of the glass layer 32, and the composite layer 31 is not disposed on the fourth surface. Fig.18 In the embodiment, the composite layer 31 is disposed on the fourth surface of the glass layer 32, and the composite layer 31 is not disposed on the third surface.

[0146] Since the second screen protection film 3B is closer to the outer surface of the display module than the first screen protection film 3A, in order to improve the strength of the second screen protection film 3B, Figures 16 to 18 The thickness of the resin substrate in the composite layer 31 in the first screen protection film 3A may be greater than the thickness of the resin substrate in the composite layer 31 in the first screen protection film 3A.

[0147] In some other examples, the number of fiber lines in the composite layer 31 of the second screen protective film 3B may be greater than the number of fiber lines in the composite layer 31 of the first screen protective film 3A. For example, the fiber lines in the composite layer 31 of the first screen protective film 3A have one layer, and the fiber lines in the composite layer 31 of the second screen protective film 3B may have two or three layers. By using fiber lines with a larger modulus, the rigidity of the entire display module can be further improved while ensuring the bendability.

[0148] See Fig.16 and Fig.17 As shown, when the third surface of the glass layer 32 has the composite layer 31 , the composite layer 31 on the third surface of the glass layer 32 can be attached to the first screen protection film 3A via the adhesive layer 4 .

[0149] See Fig.18As shown, when the composite layer 31 is not provided on the third surface of the glass layer 32 , the glass layer 32 can be attached to the first screen protection film 3A through the adhesive layer 4 .

[0150] In some scenarios, the glass layer 32 in the second screen protective film 3B is broken. Under the protection of the composite layer 31, the broken glass layer will basically not leak out. When the broken glass layer needs to be torn off, it can be torn off relatively easily, thereby improving the user experience.

[0151] like Figures 16 to 18 The second screen protection film 3B may further include a substrate 33 , and the substrate 33 may serve as a surface layer of the entire display module.

[0152] exist Fig.16 and Fig.18 In the embodiment, when the fourth surface of the glass layer 32 has the composite layer 31 , the substrate 33 can be attached to the composite layer 31 on the fourth surface of the glass layer 32 via the adhesive layer 34 .

[0153] exist Fig.17 In the embodiment, when the composite layer 31 is not provided on the fourth surface of the glass layer 32 , the substrate 33 can be attached to the fourth surface of the glass layer 32 via the adhesive layer 34 .

[0154] By using the substrate as the surface layer structure of the display module, the glass layer arranged in the middle of the module can be further protected, and the rigidity of the display module can be improved.

[0155] Fig.19 and Fig. 20 3B are structural diagrams of two other second screen protection films 3B provided in the embodiments of the present application. In the two examples, the fourth surface of the glass layer 32 is provided with a composite layer 31, and the composite layer 31 can be used as the surface layer of the entire display module.

[0156] exist Fig.19 In the embodiment, the composite layer 31 is arranged on the fourth surface of the glass layer 32, the composite layer 31 is arranged on the third surface, and the composite layer 31 on the third surface is arranged on the first screen protection film 3A through the adhesive layer 4.

[0157] exist Fig. 20 In the embodiment, the composite layer 31 is disposed on the fourth surface of the glass layer 32, and no composite layer is disposed on the third surface. The glass layer 32 is disposed on the first screen protection film 3A via the adhesive layer 4.

[0158] exist Fig.19 and Fig. 20 In the example, the composite layer is used as the outer surface of the display module. The composite layer provided in the present application includes resin and fiber with large modulus and high strength, which can ensure the modulus of the display module and improve the anti-extrusion and anti-impact performance. In this embodiment, some adhesive layers can be removed to improve the flatness of the display module.

[0159] Fig.21 This is a structural diagram of another second screen protection film 3B provided in an embodiment of the present application. The second screen protection film 3B comprises a composite layer 31, which can be attached to the first screen protection film 3A via an adhesive layer 4, and the composite layer 31 serves as a surface layer structure of the display module.

[0160] In this example, the substrate is omitted, and a composite layer including a resin substrate and fiber lines is used as a protective layer to cover the first screen protective film 3A, thereby further reducing the thickness of the entire display module and improving the flatness.

[0161] Fig. 22 : is a structural diagram of a display module given in an embodiment of the present application. In the display module, the first screen protection film 3A includes: a first glass layer 32A, a first composite layer 31A disposed on at least one of the first surface and the second surface of the first glass layer 32A, and a first substrate 33A, the first substrate 33A is attached to the first composite layer 31A on the second surface through an adhesive layer 34A.

[0162] Fig. 22 The second screen protection film 3B includes: a second glass layer 32B, a second composite layer 31B arranged on at least one of the third surface and the fourth surface of the second glass layer 32B, and also includes a second substrate 33B. The second substrate 33B is attached to the second composite layer 31B on the fourth surface through an adhesive layer 34B. The second substrate 33B serves as the surface layer structure of the display module.

[0163] exist Fig. 22 In the example, the broken first glass layer 32A or the broken second glass layer 32B can be torn off relatively easily under the protection of the composite layer, and there is basically no risk of hurting the hands.

[0164] Fig.23 : is a structural diagram of another display module provided in an embodiment of the present application. In the display module, the first screen protection film 3A includes a first glass layer 32A, and a first composite layer 31A disposed on at least one of the first surface and the second surface of the first glass layer 32A. Fig.21 In contrast, the first screen protection film 3A may not include the first substrate 33A.

[0165] Fig.23 The second screen protective film 3B and the above Fig. 22 The second screen protection film 3B in the display module may have the same structure, including a second glass layer 32B, a second composite layer 31B arranged on at least one of the third surface and the fourth surface of the second glass layer 32B, and a second substrate 33B, which serves as the surface layer structure of the display module.

[0166] exist Fig.23 In the embodiment, the second composite layer 31B on the third surface of the second screen protection film 3B is attached to the first composite layer 31A of the first screen protection film 3A through the adhesive layer 4.

[0167] exist Fig.23 In the example, the broken glass layer can be easily torn off, and the thickness of the display module can be reduced.

[0168] Fig.24 : is a structural diagram of another display module provided in an embodiment of the present application. In the display module, the first screen protection film 3A includes a first glass layer 32A and a first composite layer 31A disposed on at least one of the first surface and the second surface of the first glass layer 32A.

[0169] Fig.24 The second screen protection film 3B includes a second glass layer 32B and a second composite layer 31B disposed on a fourth surface of the second glass layer 32B. The second composite layer 31B on the fourth surface serves as a surface layer structure of the display module.

[0170] In some other examples, a second composite layer 31B may also be disposed on the third surface of the second glass layer 32B. The second composite layer 31B on the third surface of the second screen protection film 3B may be attached to the first composite layer 31A of the first screen protection film 3A via an adhesive layer 4 .

[0171] exist Fig.24 In the example, the substrate may not be included. On the basis of ensuring the modulus strength of the entire display module, the glass layer can be torn off relatively easily, and the thickness of the module can be reduced and the flatness can be improved.

[0172] Fig.25 : is a structural diagram of another display module provided in an embodiment of the present application. In the display module, the first screen protection film 3A includes a first glass layer 32A and a first composite layer 31A disposed on at least one of the first surface and the second surface of the first glass layer 32A.

[0173] Fig.25 The second screen protection film 3B includes a second composite layer 31B. The second composite layer 31B serves as the surface layer structure of the display module. The second composite layer 31B is attached to the first composite layer 31A of the first screen protection film 3A through the adhesive layer 4. The composite layer is directly used as the screen protection film structure.

[0174] Fig.26This is a structural diagram of another display module provided in an embodiment of the present application. In the display module, the first screen protective film 3A includes a first composite layer 31A. The second screen protective film 3B includes a second composite layer 31B. The second composite layer 31B is attached to the first composite layer 31A through an adhesive layer 4. In this embodiment, in both screen protective films, a composite layer is used as a protective layer. The module thickness is smaller.

[0175] Fig. 27 3 is a structural diagram of another display module provided in an embodiment of the present application. In the display module, the first screen protection film 3A includes at least two first composite layers 31A, and two adjacent first composite layers 31A are bonded together by an adhesive layer 34A.

[0176] Fig. 27 The second screen protection film 3B includes a second composite layer 31B. The multi-layer first composite layer 31A can further improve the module modulus and strength.

[0177] Fig.28 3 is a structural diagram of another display module provided in an embodiment of the present application. In the display module, the first screen protection film 3A includes a first composite layer 31A.

[0178] Fig.28 The second screen protection film 3B includes a second glass layer 32B and a second substrate 33B. The second substrate 33B is bonded to the second glass layer 32B via an adhesive layer 34B. The second glass layer 32B is bonded to the first composite layer 31A via an adhesive layer 4.

[0179] In the display modules of various structures given in the embodiments of the present application, in some embodiments, by coating the surface of the glass layer with a composite layer structure including a resin substrate and fiber lines, the broken glass can be easily torn off on the basis of improving the module modulus and strength. In other embodiments, a composite layer with a higher modulus and strength is used as a screen protective film, which can not only improve the module modulus and strength, and improve the anti-extrusion and anti-impact performance, but also reduce the thickness of the entire module and improve the flatness of the module.

[0180] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0181] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A display module, characterized in that: include: Display screen; A first composite layer, wherein the first composite layer is arranged on a display surface side of the display screen; The first composite layer includes: a first resin matrix and a first fiber line arranged in the first resin matrix, and a difference between a refractive index of the first resin matrix material and a refractive index of the first fiber line material is less than or equal to 0.

1.

2. The display module according to claim 1, characterized in that: The tensile modulus E of the first composite layer: 10 GPa≤E≤100 GPa; and / or, The light transmittance of the first composite layer is greater than or equal to 85%.

3. The display module according to claim 1 or 2, characterized in that: The refractive index n of the first composite layer: 1.45≤n≤1.65; and / or, The haze of the first composite layer is less than or equal to 5%.

4. The display module according to any one of claims 1 to 3, characterized in that: The first fiber line includes a plurality of first sub-fiber lines extending along a first direction, and a plurality of second sub-fiber lines extending along a second direction, wherein the first direction intersects with the second direction; The display screen is folded along a folding axis, and the folding axis is parallel to the first direction.

5. The display module according to any one of claims 1 to 4, characterized in that: The first fiber lines are multiple layers, and the multiple layers of the first fiber lines are arranged at intervals along the thickness direction of the first composite layer.

6. The display module according to any one of claims 1 to 5, characterized in that: The display module also includes a first glass layer and a first substrate; The first glass layer is arranged on a display surface side of the display screen, the first glass layer comprises a first surface and a second surface, the first surface faces the display screen, and the second surface faces away from the display screen; The first composite layer is disposed on the first surface of the first glass layer; The first substrate is arranged on the second surface of the first glass layer through an adhesive layer.

7. The display module according to any one of claims 1 to 5, characterized in that: The display module also includes a first glass layer and a first substrate; The first glass layer is arranged on a display surface side of the display screen, the first glass layer comprises a first surface and a second surface, the first surface faces the display screen, and the second surface faces away from the display screen; The first composite layer is disposed on the second surface of the first glass layer; The first substrate is arranged on the first composite layer on the second surface of the first glass layer through an adhesive layer.

8. The display module according to any one of claims 1 to 7, characterized in that: The display module further includes a protective layer, the protective layer includes a second composite layer, and the second composite layer is arranged on the first composite layer through an adhesive layer; The second composite layer includes: a second resin substrate and a second fiber line arranged in the second resin substrate, the difference between the refractive index of the second resin substrate material and the refractive index of the second fiber line material is less than or equal to 0.1, and the second composite layer serves as the surface layer of the display module.

9. The display module according to any one of claims 1 to 7, characterized in that: The display module further includes a protective layer, which is arranged on a side of the first composite layer away from the display screen, and includes a second glass layer and a second composite layer; The second glass layer comprises a third surface and a fourth surface, the third surface faces the first composite layer, and the fourth surface faces away from the first composite layer; The second composite layer is disposed on the third surface of the second glass layer and / or on the fourth surface of the second glass layer; The second composite layer includes: a second resin matrix and a second fiber line arranged in the second resin matrix, and a difference between a refractive index of the second resin matrix material and a refractive index of the second fiber line material is less than or equal to 0.

1.

10. The display module according to claim 9, characterized in that: The second composite layer is disposed on the fourth surface of the second glass layer; The second composite layer serves as the surface layer of the display module.

11. The display module according to claim 9, characterized in that: The protective layer also includes a second substrate; The second composite layer is disposed on the fourth surface of the second glass layer; The second substrate is arranged on the second composite layer on the fourth surface of the second glass layer through an adhesive layer; the second substrate serves as a surface layer of the display module.

12. The display module according to claim 9, characterized in that: The protective layer also includes a second substrate; The second composite layer is disposed on the third surface of the second glass layer; The second substrate is arranged on the fourth surface of the second glass through an adhesive layer; the second substrate serves as a surface layer of the display module.

13. A display device, characterized in that: include: case; The display module according to any one of claims 1 to 12; The display module is arranged on the housing.

14. The display device according to claim 13, characterized in that The housing comprises a first housing and a second housing; The display device further includes a rotating shaft mechanism, wherein the first shell and the second shell are arranged on both sides of the rotating shaft mechanism; The first shell and the second shell move toward or away from each other through the rotating shaft mechanism, so that the display module is switched between a flat state and a closed state.

15. A screen protective film, which is applied to a display surface of a display screen in a display device, characterized in that: The screen protective film comprises: A resin substrate and a fiber line disposed in the resin substrate; The difference between the refractive index of the resin substrate material and the refractive index of the fiber line material is less than or equal to 0.

1.

16. The screen protection film according to claim 15, characterized in that: The tensile modulus E of the screen protection film: 10 GPa≤E≤100 GPa; and / or, The light transmittance of the screen protection film is greater than or equal to 85%.

17. The screen protection film according to claim 15 or 16, characterized in that: The refractive index n of the screen protection film: 1.45≤n≤1.65; and / or, The haze of the screen protection film is less than or equal to 5%.

18. The screen protection film according to any one of claims 15 to 17, characterized in that: The fiber lines are multiple layers, and the multiple layers of fiber lines are arranged at intervals along the thickness direction of the screen protection film.

19. The screen protection film according to any one of claims 15 to 18, characterized in that: The screen protection film also includes a glass layer; The glass layer has a first surface and a second surface facing each other, and the resin substrate including the fiber lines is disposed on at least one of the first surface and the second surface.

20. The screen protection film according to claim 19, characterized in that: The screen protection film also includes a substrate; The resin substrate including the fiber wires is disposed on the first surface of the glass; The substrate is disposed on the resin base material on the first surface of the glass via an adhesive layer.

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