Display module having barrier properties

Abstract

A display module having barrier properties. The display module comprises a substrate (1), an optical adhesive layer (2) and an AR film (3) which are arranged in sequence; the substrate (1) provides support for the optical adhesive layer (2) and the AR film (3); the periphery of the optical adhesive layer (2) is set back relative to the substrate (1), forming a filling space on the substrate (1); the filling space is filled with a sealant (4); and the sealant (4) seals the substrate (1), the optical adhesive layer (2) and the AR film (3). The present invention has the characteristics of good sealing effect.

Description

Display modules with barrier properties

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application No. 202323344413.5 filed with the China Patent Office on December 8, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present disclosure relates to the field of display technology, and more particularly to a display module with barrier properties. Background Art

[0004] Conventional display module packaging typically involves laminating a substrate and cover plate using optically clear adhesive (OCA). Following lamination, sealant is applied vertically using a five-axis dispenser, or applied from the front using a dispenser. However, these methods often result in poor sealing performance. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of the present disclosure is to provide a display module with barrier properties, which is used to overcome the above-mentioned defects in the prior art and has the characteristic of good sealing effect.

[0006] To achieve the above objectives, the present disclosure provides the following technical solutions:

[0007] A display module with barrier properties includes a substrate, an optical adhesive layer, and an AR film arranged in sequence. The substrate provides support for the optical adhesive layer and the AR film. The optical adhesive layer is indented relative to the substrate on all sides, so that a filling space is formed on the substrate. The filling space is filled with a sealant, which seals the substrate, the optical adhesive layer, and the AR film.

[0008] In the present disclosure, preferably, the optical adhesive layer is configured as an OCA layer having barrier properties.

[0009] In the present disclosure, preferably, the substrate is configured as a rigid glass substrate or a flexible glass substrate.

[0010] In the present disclosure, preferably, the optical adhesive layer includes a first adhesive layer, a water and oxygen barrier film layer and a second adhesive layer fixedly connected in sequence, and the arrangement direction of the first adhesive layer, the water and oxygen barrier film layer and the second adhesive layer is consistent with the arrangement direction of the substrate and the AR film.

[0011] In the present disclosure, preferably, the first adhesive layer and the second adhesive layer are configured as OCA layers having barrier properties.

[0012] Beneficial effects of the present disclosure:

[0013] The present invention forms ample filling space on the substrate by setting the optical adhesive layer to be inward-contracted on all sides, which facilitates the sealing of the substrate, optical adhesive layer and AR film by the sealant. The ample filling space of the sealant facilitates the filling and curing of the sealant, and has a sufficient connection area, which is relatively stable after packaging. The present invention provides an OCA layer with barrier properties, so that the optical adhesive layer itself has barrier properties, and can achieve a good barrier effect without the need for a cover plate. It can also reduce the overall thickness and weight of the display module, thereby achieving lightweight display modules, and is also suitable for flexible display devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG1 is a schematic cross-sectional view of the structure of Example 1.

[0015] FIG2 is a schematic cross-sectional view of the second embodiment.

[0016] Reference numerals: 1. substrate; 2. optical adhesive layer; 21. first adhesive layer; 22. water and oxygen barrier film layer; 23. second adhesive layer; 3. AR film; 4. sealant. DETAILED DESCRIPTION

[0017] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present disclosure.

[0018] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are for the purpose of describing specific embodiments only and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] Example 1:

[0021] Please also refer to Figure 1. This embodiment provides a display module with barrier properties, including a substrate 1, an optical adhesive layer 2, and an AR (Anti-Reflection) film 3 arranged in sequence. The AR film 3 is also called an anti-reflection film, and its function is to achieve the purpose of anti-reflection by increasing the transmittance of the glass (screen) and reducing the reflectivity of the glass (screen). The substrate 1 provides support for the optical adhesive layer 2 and the AR film 3. The four sides of the optical adhesive layer 2 are retracted compared to the substrate 1, so that a filling space is formed on the substrate 1, and the filling space is filled with sealant 4, and the sealant 4 seals the substrate 1, the optical adhesive layer 2 and the AR film 3. In this embodiment, a filling space for accommodating the sealant 4 is reserved on the substrate 1, which increases the contact area between the sealant 4 and the substrate 1, facilitates packaging, and enables a better sealing effect to be obtained after connection.

[0022] In this embodiment, the optical adhesive layer 2 is configured as an OCA layer having barrier properties. In this embodiment, the barrier properties of the optical adhesive layer 2 are achieved by a barrier layer disposed thereon. For example, the OCA layer is specifically an optical adhesive layer 2 with a PET substrate, or a layer structure having water and oxygen barrier properties, such as a graphene layer, is disposed on the OCA layer.

[0023] In this embodiment, the substrate 1 is set to a rigid glass substrate 1 or a flexible glass substrate 1. In this embodiment, the barrier performance of the optical adhesive layer 2 can achieve a better barrier effect, and a better barrier effect can be achieved without the provision of a cover plate. The flexible glass substrate 1 is specifically set to ultra-thin flexible glass (UTG). UTG refers to ultra-thin flexible glass with a thickness of ≤0.1mm. It is a new material with great application value that has the advantages of both glass and plastic and is a major technological innovation in the glass manufacturing industry. UTG is resistant to high temperatures (above 500 degrees), has high airtightness, high surface hardness, and high transmittance. It is an ideal material for folding and bending electronic displays. At the same time, in the field of flexible printing, the high temperature resistance of flexible glass can meet the requirements that some optoelectronic devices must undergo high temperature treatment. Its outstanding bending and winding properties make it possible to use a continuous "roll-to-roll" printing process to prepare various optoelectronic devices. It is an optimal substrate and covering material for thin-film solar cell devices.

[0024] Example 2:

[0025] Referring to Figure 2 , unlike Example 1, the optical adhesive layer 2 includes a first adhesive layer 21, a water and oxygen barrier film layer 22, and a second adhesive layer 23, which are fixedly connected in sequence. The first adhesive layer 21, the water and oxygen barrier film layer 22, and the second adhesive layer 23 are arranged in the same direction as the substrate 1 and the AR film 3. The two side surfaces of the water and oxygen barrier film layer 22 are fixedly connected to the first adhesive layer 21 and the second adhesive layer 23, respectively, and the water and oxygen barrier film layer 22 completely covers the first adhesive layer 21 and the second adhesive layer 23. In this embodiment, because the water and oxygen barrier film layer has the ability to isolate water and oxygen, the optical adhesive layer 2 has barrier properties. Therefore, the first adhesive layer 21 and the second adhesive layer 23 can be configured as OCA layers with or without barrier properties. The OCA layers with barrier properties herein have the same definition as above.

[0026] The above are merely preferred embodiments of the present disclosure. The scope of protection of the present disclosure is not limited to the above embodiments. All technical solutions based on the principles of the present disclosure are within the scope of protection of the present disclosure. It should be noted that for those skilled in the art, improvements and modifications that do not depart from the principles of the present disclosure should also be considered within the scope of protection of the present disclosure.

Claims

1. A display module with barrier properties, wherein: The invention comprises a substrate (1), an optical adhesive layer (2) and an AR film (3) which are arranged in sequence, wherein the substrate (1) provides support for the optical adhesive layer (2) and the AR film (3), and the periphery of the optical adhesive layer (2) is inwardly shrunk compared to the substrate (1), so that a filling space is formed on the substrate (1), and the filling space is filled with a sealant (4), and the sealant (4) seals the substrate (1), the optical adhesive layer (2) and the AR film (3).

2. The display module with barrier properties according to claim 1, wherein: The optical adhesive layer (2) is configured as an OCA layer having barrier properties.

3. The display module with barrier properties according to claim 1, wherein: The substrate (1) is configured as a rigid glass substrate (1) or a flexible glass substrate (1).

4. The display module with barrier properties according to claim 1, wherein: The optical adhesive layer (2) comprises a first adhesive layer (21), a water and oxygen barrier film layer (22) and a second adhesive layer (23) which are fixedly connected in sequence, and the arrangement direction of the first adhesive layer (21), the water and oxygen barrier film layer (22) and the second adhesive layer (23) is consistent with the arrangement direction of the substrate (1) and the AR film (3).

5. The display module with barrier properties according to claim 4, wherein: The first adhesive layer (21) and the second adhesive layer (23) are configured as OCA layers having barrier properties.

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