CN220491534U

CN220491534U - Display module

Info

Publication number: CN220491534U
Application number: CN202322318884.2U
Authority: CN
Inventors: 王利君; 陈烨玥; 马广剑; 张锦杰; 张靖
Original assignee: Suzhou Boyu Photoelectric Technology Co ltd
Current assignee: Suzhou Boyu Photoelectric Technology Co ltd
Priority date: 2023-08-28
Filing date: 2023-08-28
Publication date: 2024-02-13
Anticipated expiration: 2033-08-28

Abstract

The application relates to a display module, which comprises a sealant frame, and a first substrate, a barrier layer and a second substrate which are sequentially arranged along the thickness direction, wherein the barrier layer has barrier performance and is arranged between the first substrate and the second substrate, the sealant frame is arranged between the first substrate and the second substrate, and the inner peripheral surface of the sealant frame is connected with the outer peripheral surface of the barrier layer; the utility model provides a display module assembly through set up the barrier layer that has barrier property between first base plate and second base plate, makes the barrier layer can form sealedly between first base plate and the second base plate, effectively blocks invasion and attack of steam and chemical substance, protects barrier layer, first base plate and second base plate through the sealant frame simultaneously, further improves the sealing effect between barrier layer and first base plate and second base plate, guarantees the holistic sealing performance of display module assembly.

Description

Display module

Technical Field

The application relates to the technical field of electronic equipment, in particular to a display module.

Background

At present, when the display module is produced, optical cement is mostly used for pasting a substrate and a cover plate, and sealing glue is coated on the side edges of the substrate and the cover plate so as to prevent water vapor or chemical substances from entering between the substrate and the cover plate, thereby causing product failure or affecting the display effect.

However, the protection method of simple dispensing is difficult to fully prevent water vapor or various chemical substances from being corroded, the risk of dispensing exists, and the tightness is low.

Disclosure of Invention

Accordingly, it is necessary to provide a display module against the problem of low sealability.

According to an aspect of the present application, there is provided a display module, including:

a first substrate;

a barrier layer having a first bonding surface and a second bonding surface disposed opposite to each other, the first bonding surface being 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;

the sealing adhesive layer is arranged around the barrier layer and is respectively bonded with 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 size of the sealant layer and the size of the barrier layer.

According to another aspect of the present application, there is provided a display module, including:

a first substrate;

the front projection of the first substrate and the front projection of the second substrate both cover the barrier layer and the sealant layer.

According to still another aspect of the present application, there is provided a display module, including:

a first substrate;

the outer side edge of the first substrate and the outer side edge of the second substrate are flush with the outer side edge of the sealant layer or have a distance, and the size of the first substrate is larger than that of the second substrate.

In one embodiment, the barrier layer is a barrier layer having barrier properties.

In one embodiment, the barrier layer includes a first barrier layer, a barrier film, and a second barrier layer, where the first barrier layer and the second barrier layer are respectively disposed on two sides of the barrier film and are bonded with the barrier film.

In one embodiment, 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 that is the same as the properties of the barrier film.

In one embodiment, 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 that is the same as the properties of the barrier film.

In one embodiment, the sealant layer is disposed adjacent to one side of the barrier layer and is disposed against the barrier layer.

In one embodiment, a gap exists between one side of the sealant layer, which is close to the barrier layer, and the outer side edge of the barrier layer.

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

Above-mentioned display module assembly through setting up the barrier layer that has barrier property between first base plate and second base plate, makes between barrier layer and first base plate and the second base plate form sealedly, effectively blocks invasion and attack of steam and chemical substance, protects barrier layer, first base plate and second base plate through the sealant frame simultaneously, further improves the sealed effect between barrier layer and first base plate and second base plate, guarantees the holistic sealing performance of display module assembly.

Drawings

Fig. 1 is a schematic structural diagram of a display module according to some embodiments of the present application.

Fig. 2 is a schematic structural diagram of a display module according to other embodiments of the present application.

Reference numerals:

1. a sealant frame;

2. a first substrate;

3. a barrier layer; 31. a first optical adhesive layer; 32. a barrier film; 33. a second optical adhesive layer;

4. and a second substrate.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

Most of the display layers of the current display modules are provided with film materials and optical adhesives between the base plate and the cover plate, and the side edges of the base plate and the cover plate are coated with sealing adhesives to prevent water vapor, sebum, sweat and other chemical substances from entering between the base plate and the cover plate, so that the film materials fail or the display effect is affected. However, the protection method of simple dispensing is difficult to sufficiently prevent water vapor or various chemical substances from being corroded, and there is a risk of dispensing. Therefore, there is a need for a display module that can effectively block moisture and chemical attack to solve the above-mentioned problems.

Referring to fig. 1-2, an embodiment of the present application provides a display module, which includes a sealant frame 1, a first substrate 2, a barrier layer 3, and a second substrate 4. The first substrate 2 and the second substrate 4 are used as a protective layer of the display module, are disposed up and down and in parallel, and may be made of transparent materials with high transmittance such as glass, polycarbonate (PC), polymethyl methacrylate (PMMA), cyclic Olefin Copolymer (COC), etc., which is not limited herein. The barrier layer 3 is used for adhering the first substrate 2 and the second substrate 4, and can effectively prevent chemical substances such as moisture, sebum, sweat and the like from entering between the first substrate 2 and the second substrate 4 due to its barrier property. The sealant frame 1 is used for shielding the barrier layer 3, further enhancing the sealing effect among the first substrate 2, the barrier layer 3 and the second substrate 4, and preventing water vapor or various chemical substances from being corroded.

When the barrier layer 3 is specifically arranged, the barrier layer is provided with a first bonding surface and a second bonding surface which are oppositely arranged, and the first bonding surface is bonded with the first surface of the first substrate 2; the second substrate 4 has a second surface disposed opposite to the first surface, and the second surface is bonded to the second bonding surface; the sealing glue layer 1 is surrounded by a barrier layer 3 and is respectively bonded with the first substrate 2 and the second substrate 4.

In one embodiment, the size of the first substrate 2 and the size of the second substrate 4 are equal to or larger than the sum of the sizes of the sealant layer 1 and the barrier layer 3. In another embodiment, the front projection of the first substrate 2 and the front projection of the second substrate 4 are both covered with the barrier layer 3 and the sealant layer 1. In yet another embodiment, the outer side of the first substrate 2 and the outer side of the second substrate 4 are both flush with or spaced apart from the outer side of the sealant layer 1, and the size of the first substrate 2 is larger than the size of the second substrate 4.

More specifically, referring to fig. 1 to 2, the sealant frame 1 is disposed between the first substrate 2 and the second substrate 4, and the sealant frame 1 cooperates with the first substrate 2 and the second substrate 4 to form a sealed cavity, the barrier layer 3 is disposed inside the sealed cavity, and an inner circumferential surface of the sealant frame 1 is connected with an outer circumferential surface of the barrier layer 3. The sealant frame 1 further prevents chemical substances such as water vapor, sebum, sweat and the like from entering between the first substrate 2 and the second substrate 4, so that the overall tightness of the display module is improved.

The material of the sealant frame 1 includes, but is not limited to, nitrile rubber (NBR), ethylene Propylene Diene Monomer (EPDM), silicone rubber (Silicone), fluororubber (FKM), perfluororubber (FFKM), polyurethane rubber (AU or EU), fluorocarbon rubber, and fluorinated hydrocarbon rubber (Viton).

Specifically, the material of the sealant frame 1 is preferably a perfluororubber material. The carbon atoms of the main chain or the side chain in the constituent molecules of the perfluororubber are bonded with fluorine atoms, so that the perfluororubber has better temperature resistance and chemical resistance than the fluororubber, and the perfluororubber also has the characteristics of hydrophobicity and oleophobicity, so that the perfluororubber has better protective performance as the sealant frame 1. Therefore, in the embodiment of the present application, the sealant frame 1 uses perfluororubber.

In summary, the display module of this application through set up the separation layer 3 that has the barrier property between first base plate 2 and second base plate 4, makes between separation layer 3 can form sealedly with first base plate 2 and second base plate 4, effectively blocks the invasion and attack of steam and chemical, protects separation layer 3, first base plate 2 and second base plate 4 through sealed frame 1 simultaneously, further improves the sealing effect between separation layer 3 and first base plate 2 and second base plate 4, guarantees the holistic sealing performance of display module.

Referring to fig. 1, in one embodiment, the barrier layer 3 is an optical adhesive layer with barrier properties. Wherein, OCA with barrier property can be selected for the optical adhesive layer. Specifically, the OCA is a double-sided tape with optical transparency, and has the characteristics of high clarity, high light transmittance, high adhesive force, high weather resistance, high water resistance, good high temperature resistance, ultraviolet resistance and difficult deterioration after long-time use. The conventional OCA cannot effectively prevent chemical substances such as water vapor, sebum, sweat and the like from entering between the first substrate 2 and the second substrate 4, while the OCA having barrier properties can effectively prevent chemical substances such as water vapor, sebum, sweat and the like from entering between the first substrate 2 and the second substrate 4 by utilizing the barrier properties thereof.

Referring to fig. 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, where the first optical adhesive layer 31 and the second optical adhesive layer 33 are disposed on two sides of the barrier film 32, and are adhered to the barrier film 32. Specifically, the first optical adhesive layer 31 and the second optical adhesive layer 33 are disposed on the first substrate 2 and the second substrate 4, respectively, and the barrier film 32 is disposed between the first optical adhesive layer 31 and the optical adhesive layer. The barrier film 32 blocks chemical substances such as moisture, sebum, sweat, and the like, and prevents the first substrate 2 and the second substrate 4 from being corroded by the moisture or various chemical substances.

More specifically, the water-oxygen barrier film 32 is selected as the barrier film 32, and the material thereof may be one or more of Al2O3, siO2, and TiO 2. Illustratively, in one embodiment, the barrier film 32 is an Al2O3 monolayer separator; in another embodiment, the barrier film 32 is a double-layer structured separator of Al2O3 and SiO 2; in yet another embodiment, barrier film 32 is a multilayer structure of Al2O3, siO2, and TiO 2.

In one embodiment, the properties of the first optical cement layer 31 and the second optical cement layer 33 are the same; the first optical cement layer 31 is an optical cement layer having a first property that is the same as the property of the barrier film 32. That is, in this embodiment, the first property is a barrier property. It is noted that the first optical adhesive layer 31 itself has tackiness, and thus, in this embodiment, the first optical adhesive layer 31 is actually an optical adhesive layer having both tackiness and barrier properties.

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 chemical substances such as water vapor, sebum, sweat and the like, and further ensure the anti-corrosion effect of the barrier layer 3 on the water vapor or various chemical substances. The first performance is the same as the above and will not be described in detail herein.

In one embodiment, the properties of the first optical cement layer 31 and the second optical cement layer 33 are different; one of the first optical cement layer 31 and the second optical cement layer 33 is an optical cement layer having a first property that is the same as the property of the barrier film 32.

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 chemical substances such as water vapor or sebum, sweat and the like by the second optical adhesive layer 33 and the barrier film 32, and prevents the corrosion of the first substrate 2 and the second substrate 4 by the water vapor or various chemical substances. 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 chemical substances such as water vapor or sebum, sweat and the like through the first optical adhesive layer 31 and the barrier film 32, and prevents the corrosion of the first substrate 2 and the second substrate 4 by the water vapor or various chemical substances. The conventional optical adhesive layer is an optical adhesive layer with a pasting function only, and the optical adhesive layer with a blocking property is an optical adhesive layer with a pasting function and liquid blocking function.

In one embodiment, the front projection of the first optical glue layer 31 on the second substrate 4 coincides with the front projection of the second optical glue layer 33 on the second substrate 4, and the front projection of the barrier film 32 on the second substrate 4 covers the front projection of the first optical glue layer 31 on the second substrate 4, and the front projection of the first substrate 2 on the second substrate 4 covers the front projection of the barrier film 32 on the second substrate 4.

Specifically, in one embodiment, the area of the cross section of the barrier film 32 is equal to the areas of the cross sections of the first optical adhesive layer 31 and the second optical adhesive layer 33, and the inner peripheral surface of the sealant frame 1 is fixed with the outer peripheral surface of the first optical adhesive layer 31, the outer peripheral surface of the second optical adhesive layer 33, and the outer peripheral surface of the barrier film 32. In another embodiment, not shown, the area of the cross section of the barrier film 32 is larger than the areas of the cross sections of the first optical adhesive layer 31 and the second optical adhesive layer 33, and a groove is provided on the inner peripheral surface of the sealant frame 1, and the outer peripheral surface of the barrier film 32 is inserted and fixed in the groove. The structure can improve the combination 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.

In one embodiment, the sealant layer 1 is disposed adjacent to the barrier layer 3 on one side thereof, and is disposed against the barrier layer 3. In another embodiment, the sealant layer 1 is adjacent to one side of the barrier layer 3 and has a gap with the outer side of the barrier layer 3.

Referring to fig. 1-2, in one embodiment, the thickness of the barrier layer 3 is consistent with the thickness of the sealant frame 1 along the thickness direction of the display module. Specifically, two sides facing away from the barrier layer 3 are respectively connected with the first substrate 2 and the second substrate 4, and two sides facing away from the sealant frame 1 are respectively connected with the first substrate 2 and the second substrate 4. By enabling no gap to exist between the barrier layer 3 and the first substrate 2 and between the barrier layer 1 and the second substrate 4, no gap exists between the sealant frame 1 and the first substrate 2 and between the sealant frame 1 and the second substrate 4, and only the inner peripheral surface of the sealant frame 1 is in contact with the barrier layer 3, the anti-corrosion effect of the barrier layer 3 is not influenced by the sealant frame 1, and the protection effect of the sealant frame 1 is not influenced by the barrier layer 3.

In one embodiment, the orthographic projection area of the first substrate 2 on the second substrate 4 is identical to the area of the side of the second substrate 4 facing the first substrate 2, and 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. The structure can ensure that the sealant frame 1 and the barrier layer 3 can be attached to the first substrate 2 and the second substrate 4 to the greatest extent, so that no gap exists between the first substrate 2 and the second substrate 4, and the probability that the first substrate 2 and the second substrate 4 are corroded by water vapor, chemical substances and the like is effectively reduced.

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

Specifically, in one embodiment, the color-changing film is disposed on the first substrate 2, and the barrier layer 3 is disposed on a side of the color-changing film away from the first substrate 2 and is connected to the second substrate 4. In another embodiment, the color-changing film is arranged on the second substrate 4, and the barrier layer 3 is arranged on one side of the color-changing film far away from the second substrate 4 and is connected with the first substrate 2

It will be appreciated that the color shifting film may include an electrochromic material layer, an electrolyte layer disposed on the electrochromic material layer for transporting charged ions, and an ion storage layer disposed on the electrolyte layer for storing the charged ions. Charged ions stored in the ion storage layer can pass through the electrolyte layer and enter the electrochromic material layer after being electrified, so that the color of the electrochromic material layer is changed.

In one embodiment, the first substrate 2 and the second substrate 4 may be organic substrates or inorganic substrates, and 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, polyimide, and the like. When the first substrate 2 and the second substrate 4 are inorganic substrates, the materials of the first substrate 2 and the second substrate 4 may be one or more of glass, glass fiber, silicon wafer, and the like.

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

More specifically, the first substrate 2 and/or the second substrate 4 is flexible glass. Wherein the flexible glass may be UTG (ultra-thin flexible glass). When the first substrate 2 and the second substrate 4 are UTG, the thickness of the display module is smaller (corresponding to one third of the thickness of the display module using the common glass substrate), and the weight is lighter, so that the thinness and thinness of the display module is ensured.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims

1. A display module, comprising:

a first substrate;

2. A display module, comprising:

a first substrate;

3. A display module, comprising:

a first substrate;

4. A display module according to any one of claims 1 to 3, wherein the barrier layer is a barrier layer having barrier properties.

5. A display module according to any one of claims 1 to 3, wherein the barrier layer comprises a first barrier layer, a barrier film and a second barrier layer, the first barrier layer and the second barrier layer being disposed on two sides of the barrier film respectively and bonded to the barrier film.

6. The display module of claim 5, wherein the first barrier layer and the second barrier layer have the same properties;

7. The display module of claim 5, wherein the first barrier layer and the second barrier layer are different in performance;

8. A display module according to any one of claims 1 to 3, wherein the sealant layer is disposed adjacent to one side of the barrier layer, against the barrier layer.

9. A display module according to any one of claims 1 to 3, wherein a gap exists between a side of the sealant layer adjacent to the barrier layer and an outer side of the barrier layer.

10. A 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.