Display module

Abstract

The present application relates to a display module, comprising a sealant frame, and a first substrate, a barrier layer and a second substrate which are sequentially arranged in the thickness direction, wherein the barrier layer has a barrier property and is arranged between the first substrate and the second substrate; and the sealant frame is arranged between the first substrate and the second substrate, and the inner peripheral surface of the sealant frame is connected to the outer peripheral surface of the barrier layer. In the display module of the present application, the barrier layer having a barrier property is arranged between the first substrate and the second substrate, so that the barrier layer can form a seal with the first substrate and the second substrate, effectively blocking the invasion of water vapor and chemical substances; moreover, the barrier layer, the first substrate and the second substrate are protected by the sealant frame, thus further improving the sealing effect between the barrier layer and the first substrate and second substrate, and ensuring the overall sealing performance of the display module.

Description

Display module

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application No. 202322318884.2 filed with the China Patent Office on August 28, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of electronic equipment, and in particular to a display module. Background Art

[0004] During the production of current display modules, optical adhesive is mostly used to bond the substrate and cover, and sealant is applied to the sides of the substrate and cover to prevent moisture or chemicals from entering between the substrate and cover, which could cause product failure or affect the display effect.

[0005] However, the protection method of simply dispensing glue is difficult to fully prevent the erosion of water vapor or various chemicals, and there is a risk of debonding and low sealing.

[0006] Summary of the Invention

[0007] Based on this, it is necessary to provide a display module to address the above-mentioned problem of low sealing performance.

[0008] According to one aspect of the present application, a display module is provided, comprising:

[0009] a first substrate;

[0010] a barrier layer having a first adhesive surface and a second adhesive surface opposite to each other, wherein the first adhesive surface is bonded to the first surface of the first substrate;

[0011] a second substrate having a second surface disposed opposite to the first surface, the second surface being bonded to the second bonding surface;

[0012] a sealant layer surrounding the barrier layer and bonded to the first substrate and the second substrate respectively;

[0013] Wherein, the size of the first substrate and the size of the second substrate are both greater than or equal to the sum of the sizes of the sealant layer and the barrier layer.

[0014] According to another aspect of the present application, a display module is provided, comprising:

[0015] a first substrate;

[0016] a barrier layer having a first adhesive surface and a second adhesive surface opposite to each other, wherein the first adhesive surface is bonded to the first surface of the first substrate;

[0017] a second substrate having a second surface disposed opposite to the first surface, the second surface being bonded to the second bonding surface;

[0018] a sealant layer surrounding the barrier layer and bonded to the first substrate and the second substrate respectively;

[0019] The orthographic projection of the first substrate and the orthographic projection of the second substrate both cover the barrier layer and the sealant layer.

[0020] According to another aspect of the present application, a display module is provided, comprising:

[0021] a first substrate;

[0022] a barrier layer having a first adhesive surface and a second adhesive surface opposite to each other, wherein the first adhesive surface is bonded to the first surface of the first substrate;

[0023] a second substrate having a second surface disposed opposite to the first surface, the second surface being bonded to the second bonding surface;

[0024] a sealant layer surrounding the barrier layer and bonded to the first substrate and the second substrate respectively;

[0025] The outer edges of the first substrate and the second substrate are both flush with or spaced apart from the outer edges of the sealant layer, and the size of the first substrate is larger than that of the second substrate.

[0026] In one embodiment, the barrier layer is a barrier layer with barrier properties.

[0027] In one embodiment, the barrier layer includes a first barrier layer, a barrier film, and a second barrier layer. The first barrier layer and the second barrier layer are respectively disposed on both sides of the barrier film and bonded to the barrier film.

[0028] In one embodiment, the first barrier layer and the second barrier layer have the same properties;

[0029] The first barrier layer is a barrier layer having a first property, and the first property is the same as the property of the barrier film.

[0030] In one embodiment, the first barrier layer and the second barrier layer have different properties;

[0031] One of the first barrier layer and the second barrier layer is a barrier layer having a first property, and the first property is the same as a property of the barrier film.

[0032] In one embodiment, the sealant layer is close to a side of the barrier layer and is disposed in contact with the barrier layer.

[0033] In one embodiment, a gap exists between the side of the sealant layer close to the barrier layer and the outer side of the barrier layer.

[0034] In one embodiment, the first substrate and / or the second substrate is glass or ultra-thin glass.

[0035] The above-mentioned display module, by arranging a barrier layer with barrier properties between the first substrate and the second substrate, can form a seal between the barrier layer and the first substrate and the second substrate, effectively blocking the invasion of water vapor and chemicals. At the same time, the barrier layer, the first substrate and the second substrate are protected by the sealing frame, further improving the sealing effect between the barrier layer and the first substrate and the second substrate, thereby ensuring the overall sealing performance of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG1 is a schematic structural diagram of a display module according to some embodiments of the present application.

[0037] FIG2 is a schematic structural diagram of a display module according to some other embodiments of the present application.

[0038] Reference numerals: 1. Sealing frame; 2. First substrate; 3. Barrier layer; 31. First optical adhesive layer; 32. Barrier film; 33. Second optical adhesive layer; 4. Second substrate. DETAILED DESCRIPTION

[0039] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0040] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0041] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0042] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0043] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0044] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0045] The display layer of most current display modules incorporates a film and optical adhesive between the substrate and cover plate, with sealant applied to the sides of both. This prevents moisture, sebum, sweat, and other chemicals from entering between the two layers, potentially causing film failure or affecting the display. However, simple adhesive application provides limited protection against moisture and chemical erosion, and carries the risk of debonding. Therefore, there is an urgent need for a display module that effectively blocks moisture and chemical intrusion to address these issues.

[0046] Referring to Figures 1 and 2, an embodiment of the present application provides a display module, including a sealing frame 1, a first substrate 2, a barrier layer 3 and a second substrate 4. Among them, the first substrate 2 and the second substrate 4 are used as protective layers of the display module, and are arranged in parallel up and down. The material thereof can be glass, polycarbonate (PC), polymethyl methacrylate (PMMA), cycloolefin copolymer (COC) and other transparent materials with high transmittance, which are not limited in this application. The barrier layer 3 is used to stick the first substrate 2 and the second substrate 4, and because it has barrier properties, it can effectively prevent water vapor or chemicals such as sebum and sweat from entering between the first substrate 2 and the second substrate 4. The sealing frame 1 is used to shield the barrier layer 3 and further enhance the sealing effect between the first substrate 2, the barrier layer 3 and the second substrate 4 to prevent erosion by water vapor or various chemicals.

[0047] In the specific configuration, the barrier layer 3 has a first bonding surface and a second bonding surface arranged opposite to each other, and the first bonding surface is bonded to the first surface of the first substrate 2; the second substrate 4 has a second surface arranged opposite to the first surface, and the second surface is bonded to the second bonding surface of the barrier layer 3; the sealant layer 1 surrounds the barrier layer 3 and is bonded to the first substrate 2 and the second substrate 4 respectively.

[0048] In one embodiment, the dimensions of the first substrate 2 and the second substrate 4 are both greater than or equal to the sum of the dimensions of the sealant layer 1 and the barrier layer 3. In another embodiment, the orthographic projections of the first substrate 2 and the second substrate 4 both cover the barrier layer 3 and the sealant layer 1. In yet another embodiment, the outer edges of the first substrate 2 and the second substrate 4 are flush with or spaced apart from the outer edges of the sealant layer 1, and the dimensions of the first substrate 2 are greater than those of the second substrate 4.

[0049] More specifically, referring to Figures 1 and 2 , a sealing frame 1 is disposed between a first substrate 2 and a second substrate 4. The sealing frame 1 cooperates with the first and second substrates 2 and 4 to form a sealed cavity. A barrier layer 3 is disposed within the sealed cavity, with the inner circumference of the sealing frame 1 connected to the outer circumference of the barrier layer 3. The sealing frame 1 further prevents moisture, sebum, sweat, and other chemicals from entering between the first and second substrates 2 and 4, thereby improving the overall sealing of the display module.

[0050] The material of the sealing rubber frame 1 includes but is not limited to nitrile rubber (NBR), ethylene propylene diene monomer (EPDM), silicone, fluororubber (FKM), perfluororubber (FFKM), polyurethane rubber (AU or EU), fluorocarbon rubber, and fluorinated hydrocarbon rubber (Viton).

[0051] Specifically, perfluoroelastomer (PFER) is a preferred material for the sealant frame 1. Because all carbon atoms in the main chain or side chains of perfluoroelastomer molecules are bonded to fluorine atoms, it has a higher fluorine content than fluororubber. Therefore, perfluoroelastomer exhibits the best temperature and chemical resistance of all elastomers. Furthermore, perfluoroelastomer is hydrophobic and oleophobic, making it an even more superior protective material for the sealant frame 1. Therefore, in the embodiments of the present application, perfluoroelastomer (PFER) is used for the sealant frame 1.

[0052] In summary, the display module of the present application sets a barrier layer 3 with barrier properties between the first substrate 2 and the second substrate 4, so that the barrier layer 3 can form a seal with the first substrate 2 and the second substrate 4, effectively blocking the invasion of water vapor and chemical substances. At the same time, the barrier layer 3, the first substrate 2 and the second substrate 4 are protected by the sealing frame 1, further improving the sealing effect between the barrier layer 3 and the first substrate 2 and the second substrate 4, thereby ensuring the overall sealing performance of the display module.

[0053] Referring to Figure 1 , in one embodiment, the barrier layer 3 is an optical adhesive layer with barrier properties. The optical adhesive layer can be made of an optically transparent adhesive called an adhesive called an optically transparent adhesive (OCA). Specifically, OCA is an optically transparent double-sided adhesive tape that features high clarity, high light transmittance, strong adhesion, high weather resistance, high water resistance, good high-temperature resistance, UV resistance, and resistance to long-term deterioration. Currently available OCAs include conventional OCAs and OCAs with barrier properties. Conventional OCAs cannot effectively prevent water vapor, sebum, sweat, and other chemicals from entering between the first substrate 2 and the second substrate 4. However, OCAs with barrier properties can effectively prevent water vapor, sebum, sweat, and other chemicals from entering between the first substrate 2 and the second substrate 4 by utilizing their barrier properties.

[0054] Referring to Figure 2 , in one embodiment, the barrier layer 3 includes a first optical adhesive layer 31, a barrier film 32, and a second optical adhesive layer 33. The first optical adhesive layer 31 and the second optical adhesive layer 33 are respectively disposed on either side of the barrier film 32 and bonded to the barrier film 32. Specifically, the first optical adhesive layer 31 and the second optical adhesive layer 33 are respectively disposed on the first substrate 2 and the second substrate 4, with the barrier film 32 disposed between the first optical adhesive layer 31 and the second optical adhesive layer 33. The barrier film 32 blocks water vapor, sebum, sweat, and other chemicals, preventing them from corroding the first substrate 2 and the second substrate 4.

[0055] More specifically, the barrier film 32 is a water and oxygen barrier film 32 , and its material can be one or more of Al2O3, SiO2, and TiO2. For example, in one embodiment, the barrier film 32 is a single-layer Al2O3 membrane; in another embodiment, the barrier film 32 is a double-layer membrane composed of Al2O3 and SiO2; and in yet another embodiment, the barrier film 32 is a multi-layer membrane composed of Al2O3, SiO2, and TiO2.

[0056] In one embodiment, the first optical adhesive layer 31 and the second optical adhesive layer 33 have the same performance; the first optical adhesive layer 31 is an optical adhesive layer with a first performance, which is the same as the performance of the barrier film 32 .

[0057] Specifically, the first optical adhesive layer 31 and the second optical adhesive layer 33 are both optical adhesive layers with barrier properties, so that the first optical adhesive layer 31 and the second optical adhesive layer 33 can cooperate with the barrier film 32 to block water vapor or chemicals such as sebum and sweat, further ensuring the anti-corrosion effect of the barrier layer 3 against water vapor or various chemicals.

[0058] In one embodiment, the first optical adhesive layer 31 and the second optical adhesive layer 33 have different properties; one of the first optical adhesive layer 31 and the second optical adhesive layer 33 is an optical adhesive layer with a first property, which is the same as the property of the barrier film 32 .

[0059] Specifically, in one embodiment, the first optical adhesive layer 31 is a conventional optical adhesive layer, and the second optical adhesive layer 33 is an optical adhesive layer with barrier properties. The barrier layer 3 blocks water vapor, sebum, sweat, and other chemicals through the second optical adhesive layer 33 and the barrier film 32, thereby preventing water vapor or various chemicals from corroding the first substrate 2 and the second substrate 4. In another embodiment, the first optical adhesive layer 31 is an optical adhesive layer with barrier properties, and the second optical adhesive layer 33 is a conventional optical adhesive layer. The barrier layer 3 blocks water vapor, sebum, sweat, and other chemicals through the first optical adhesive layer 31 and the barrier film 32, thereby preventing water vapor or various chemicals from corroding the first substrate 2 and the second substrate 4. A conventional optical adhesive layer is an optical adhesive layer that only has an adhesive function, while an optical adhesive layer with barrier properties is an optical adhesive layer that has both an adhesive function and a liquid barrier function.

[0060] In one embodiment, the orthographic projection of the first optical adhesive layer 31 on the second substrate 4 coincides with the orthographic projection of the second optical adhesive layer 33 on the second substrate 4, the orthographic projection of the barrier film 32 on the second substrate 4 covers the orthographic projection of the first optical adhesive layer 31 on the second substrate 4, and the orthographic projection of the first substrate 2 on the second substrate 4 covers the orthographic projection of the barrier film 32 on the second substrate 4.

[0061] Specifically, in one embodiment, the cross-sectional area of ​​the barrier film 32 is equal to the cross-sectional area of ​​the first optical adhesive layer 31 and the second optical adhesive layer 33, and the inner circumference of the sealant frame 1 is fixed to the outer circumference of the first optical adhesive layer 31, the outer circumference of the second optical adhesive layer 33, and the outer circumference of the barrier film 32. In another embodiment (not shown), the cross-sectional area of ​​the barrier film 32 is greater than the cross-sectional area of ​​the first optical adhesive layer 31 and the second optical adhesive layer 33, and a groove is provided on the inner circumference of the sealant frame 1, and the outer circumference of the barrier film 32 is inserted into and fixed in the groove. This structure can improve the bonding stability between the sealant frame 1 and the barrier layer 3 by increasing the contact area between the barrier film 32 and the sealant frame 1.

[0062] In one embodiment, the side of the sealant layer 1 close to the barrier layer 3 is disposed in contact with the barrier layer 3. In another embodiment, the side of the sealant layer 1 close to the barrier layer 3 has a gap with the outer side of the barrier layer 3.

[0063] Referring to Figures 1 and 2, in one embodiment, the thickness of the barrier layer 3 along the thickness direction of the display module is consistent with the thickness of the sealing frame 1. Specifically, the two opposing sides of the barrier layer 3 are respectively connected to the first substrate 2 and the second substrate 4, and the two opposing sides of the sealing frame 1 are respectively connected to the first substrate 2 and the second substrate 4. By eliminating a gap between the barrier layer 3 and the first substrate 2 and the second substrate 4, and eliminating a gap between the sealing frame 1 and the first substrate 2 and the second substrate 4, and by ensuring that only the inner circumference of the sealing frame 1 is in contact with the barrier layer 3, the sealing frame 1 does not affect the anti-corrosion effect of the barrier layer 3, and the barrier layer 3 does not affect the protective effect of the sealing frame 1.

[0064] In one embodiment, the orthographic projection area of ​​the first substrate 2 on the second substrate 4 is consistent with the area of ​​the side of the second substrate 4 facing the first substrate 2. The sum of the orthographic projection area of ​​the sealant frame 1 on the second substrate 4 and the orthographic projection area of ​​the barrier layer 3 on the second substrate 4 is equal to the orthographic projection area of ​​the first substrate 2 on the second substrate 4. This structure ensures that the sealant frame 1 and the barrier layer 3 are closely attached to the first substrate 2 and the second substrate 4 to the greatest extent possible, eliminating any gap between the first substrate 2 and the second substrate 4, and effectively reducing the risk of corrosion of the first substrate 2 and the second substrate 4 by moisture or chemicals.

[0065] In one embodiment, a color-changing film is provided on the first substrate 2 or the second substrate 4 , and the color-changing film is connected to the barrier layer 3 .

[0066] Specifically, in one embodiment, the color-changing film is provided on the first substrate 2, and the barrier layer 3 is provided on the side of the color-changing film away from the first substrate 2 and connected to the second substrate 4. In another embodiment, the color-changing film is provided on the second substrate 4, and the barrier layer 3 is provided on the side of the color-changing film away from the second substrate 4 and connected to the first substrate 2.

[0067] It is understood that the color-changing film may include an electrochromic material layer, an electrolyte layer, and an ion storage layer. The electrolyte layer is provided on the electrochromic material layer for transmitting charged ions, and the ion storage layer is provided on the electrolyte layer for storing charged ions. When energized, the charged ions stored in the ion storage layer can pass through the electrolyte layer and enter the electrochromic material layer, causing the color of the electrochromic material layer to change.

[0068] In one embodiment, the first substrate 2 and the second substrate 4 may be organic substrates or inorganic substrates. When the first substrate 2 and the second substrate 4 are organic substrates, the material of the first substrate 2 and the second substrate 4 may be one or more of polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyethersulfone, and polyimide. When the first substrate 2 and the second substrate 4 are inorganic substrates, the material of the first substrate 2 and the second substrate 4 may be one or more of glass, glass fiber, and silicon wafer.

[0069] Specifically, the first substrate 2 and / or the second substrate 4 is glass or ultra-thin glass.

[0070] More specifically, the first substrate 2 and / or the second substrate 4 are flexible glass. The flexible glass may be UTG (ultra-thin flexible glass). When the first and second substrates 2 and 4 are UTG, the overall thickness of the display module is reduced, equivalent to one-third the thickness of a display module using ordinary glass substrates. The weight is also reduced, thereby ensuring the overall thinness of the display module.

[0071] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0072] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A display module, comprising: a first substrate; The barrier layer has a first bonding surface and a second bonding surface that are arranged opposite to each other, and the first bonding surface is bonded to the first surface of the first substrate; A second substrate having a second surface arranged opposite to the first surface, the second surface being bonded to the second bonding surface; a sealing adhesive layer, surrounding the barrier layer and respectively bonded to the first substrate and the second substrate; Wherein, the size of the first substrate and the size of the second substrate are both greater than or equal to the sum of the sizes of the sealant layer and the barrier layer.

2. A display module, comprising: a first substrate; The barrier layer has a first bonding surface and a second bonding surface that are arranged opposite to each other, and the first bonding surface is bonded to the first surface of the first substrate; A second substrate having a second surface disposed opposite to the first surface, the second surface being bonded to the second bonding surface; a sealant layer, surrounding the barrier layer and respectively bonded to the first substrate and the second substrate; Wherein, the orthographic projection of the first substrate and the orthographic projection of the second substrate both cover the barrier layer and the sealant layer.

3. A display module, comprising: a first substrate; The barrier layer has a first bonding surface and a second bonding surface that are arranged opposite to each other, and the first bonding surface is bonded to the first surface of the first substrate; The second substrate has a second surface arranged opposite to the first surface, and the second surface is The second bonding surface is bonded; a sealant layer, surrounding the barrier layer and respectively bonded to the first substrate and the second substrate; The outer edges of the first substrate and the second substrate are both flush with or spaced apart from the outer edges of the sealant layer, and the size of the first substrate is greater than that of the second substrate.

4. The display module according to any one of claims 1 to 3, wherein: The barrier layer is a barrier layer with barrier properties.

5. The display module according to any one of claims 1 to 3, wherein: The barrier layer includes a first barrier layer, a barrier film and a second barrier layer. The first barrier layer and the second barrier layer are respectively arranged on both sides of the barrier film and bonded to the barrier film.

6. The display module according to claim 5, wherein: The first barrier layer and the second barrier layer have the same properties; The first barrier layer is a barrier layer having a first property, and the first property is the same as the property of the barrier film.

7. The display module according to claim 5, wherein: The first barrier layer and the second barrier layer have different properties; One of the first barrier layer and the second barrier layer is a barrier layer having a first property, and the first property is the same as a property of the barrier film.

8. The display module according to any one of claims 1 to 3, wherein: The sealant layer is close to one side of the barrier layer and is disposed in contact with the barrier layer.

9. The display module according to any one of claims 1 to 3, wherein: The sealant layer is close to one side of the barrier layer, and there is a gap between the sealant layer and the outer side of the barrier layer.

10. The display module according to any one of claims 1 to 3, wherein: The first substrate and / or the second substrate is glass or ultra-thin glass.

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