Glass diffusion plate with pattern structure
By designing a patterned glass diffuser plate on a glass substrate, and utilizing the synergistic effect of the optical adhesive layer, sealing structure, and optical film, the problems of diffusion ink shedding and uneven brightness uniformity were solved, achieving a high-efficiency and low-cost light diffusion effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-03-17
AI Technical Summary
Diffusion ink is prone to peeling off on glass substrates, resulting in loss of diffusion effect, and the brightness uniformity is not obvious when optical films replace diffusion ink.
The design of a glass diffuser plate with a patterned structure includes setting raised patterned structures on the light-incident and light-excising surfaces, and using an optical adhesive layer and sealing structure in synergy with an optical film to replace the diffusion ink, forming air grooves to reduce light reflection, and combining with the diffusion ink layer to improve brightness and uniformity.
It improves the brightness uniformity and service life of the diffuser plate, reduces production costs and process difficulty, prevents moisture erosion, and improves production efficiency.
Smart Images
Figure CN224005295U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of diffusion plate technology, specifically to a glass diffusion plate with a patterned structure. Background Technology
[0002] The backlight module is a key component of an LCD panel, its function being to provide sufficient brightness and uniformly distributed light source for the display. The backlight module mainly includes LED light sources, glass diffuser plates, and optical films. The glass diffuser plate typically has diffusion ink containing diffusion particles printed on the surface of a glass substrate, thus diffusing the point light source (emitted by the LED light source) into a surface light source. Generally, there is little difference in effect between printing two layers of diffusion ink on one side of the glass substrate and printing single layers of diffusion ink on each side; both can achieve good diffusion effects. However, the adhesion of the diffusion ink is often poor, and it is prone to detachment after bonding with the glass substrate, resulting in a loss of diffusion effect. Furthermore, printing two layers of diffusion ink also suffers from high ink costs and low production efficiency.
[0003] Currently, with the development of technology, it has been discovered that optical films (gain films) also have a certain light diffusion effect. Therefore, in existing technologies, optical films are used to replace diffusion inks for light diffusion. However, in practice, when optical films are bonded to glass substrates to replace diffusion inks, the resulting brightness uniformity is not particularly noticeable. Utility Model Content
[0004] The purpose of this invention is to address the problem that diffusion ink is prone to peeling off on glass substrates, and the problem that brightness uniformity is not obvious when using optical films to completely replace diffusion ink. This invention designs a glass diffuser with a patterned structure, which solves the problems of easy delamination of diffusion ink and the problem of brightness uniformity of the diffuser plate after using optical films.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:
[0006] This utility model designs a glass diffusion plate with a patterned structure, which includes the following structural configuration:
[0007] A glass substrate having a light-incident surface and a light-exiting surface opposite to each other, wherein a raised first pattern structure is provided on the light-incident surface and a raised second pattern structure is provided on the light-exiting surface.
[0008] An optical adhesive layer is stacked on the second pattern structure, and a plurality of air grooves are formed between the optical adhesive layer and the second pattern structure;
[0009] An optical film is laminated on the optical adhesive layer;
[0010] A sealing structure is arranged on the light exit surface, and the sealing structure extends to tightly fit the periphery of the optical film, so as to form a closed space between the optical film and the light exit surface;
[0011] A diffusion ink layer is laminated on the first pattern structure.
[0012] Further, a glass diffusion plate with a pattern structure: the thickness of the glass substrate is 0.5-1.5mm.
[0013] Further, a glass diffusion plate with a pattern structure: the first pattern structure and the second pattern structure are arranged to be the same or different.
[0014] Further, a glass diffusion plate with a pattern structure: the first pattern structure and the second pattern structure are arranged to be the same or different.
[0015] Further, a glass diffusion plate with a pattern structure: the height of the protrusions of the second pattern structure is greater than the thickness of the optical adhesive layer.
[0016] Further, a glass diffusion plate with a pattern structure: the height of the protrusions of the first pattern structure and the second pattern structure is 45.0-80.0μm, and the thickness of the optical adhesive layer is 25.0-45.0μm.
[0017] Further, a glass diffusion plate with a pattern structure: the material of the optical adhesive layer is selected from OCA or OSA optical adhesive.
[0018] Further, a glass diffusion plate with a pattern structure: the optical film adopts a gain film, including but not limited to a brightness enhancement film, a diffusion film or COPP.
[0019] Specifically, the thickness of the optical film can be 30.0-60.0μm.
[0020] Further, a glass diffusion plate with a pattern structure: the sealing structure is formed by curing an acrylic adhesive with a viscosity of 1100-1800mPa.s.
[0021] Further, a glass diffusion plate with a pattern structure: the thickness of the diffusion ink layer is 40.0-70.0μm.
[0022] The beneficial effects of the present application are as follows:
[0023] This invention creates a second patterned structure on the light-emitting surface of a glass substrate and bonds an optical film to it using an optical adhesive layer. The synergistic effect of the optical film and the second patterned structure replaces the diffusion ink layer, resulting in better brightness uniformity of the light source diffused by the second patterned structure and the optical film. Furthermore, the second patterned structure can be roll-formed, a relatively simple process that can be automated, and the bonding process for the optical film is also simple. Therefore, the scheme using the patterned structure and the bonded optical film in this application can replace the printing of diffusion ink, offering higher production efficiency and lower cost compared to diffusion ink. In addition, several air grooves are formed between the optical adhesive layer and the second patterned structure. Utilizing the fact that the refractive index of air is lower than that of the optical adhesive layer, the number of reflections of light in the diffuser plate is reduced, further enhancing the brightness of the diffuser plate.
[0024] This invention also provides a diffusion ink layer on the light-incident surface of the glass substrate. This layer, together with the second patterned structure on the light-emitting surface and the optical film, further enhances the overall brightness and uniformity of the diffusion plate. Simultaneously, a first patterned structure is also provided on the light-incident surface of the glass substrate, which effectively improves the adhesion between the diffusion ink layer and the light-incident surface, making the diffusion ink layer less prone to delamination and extending the service life of the diffusion plate. This glass diffusion plate uses a patterned glass instead of a traditional flat glass substrate. Compared to traditional double-layer diffusion ink glass diffusion plates, it reduces the amount of diffusion ink used, lowering costs. This application utilizes the synergistic effect of the diffusion ink layer, the first patterned structure, the air groove, the second patterned structure, and the optical film to improve the brightness, uniformity, and service life of the diffusion plate.
[0025] This invention also incorporates a sealing structure, which ensures a complete seal between the optical film and the glass substrate, preventing the entry of moisture and avoiding a decrease in the brightness, diffusion uniformity, and service life of the diffuser plate due to external moisture entering between the glass substrate and the optical film. Attached Figure Description
[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0027] Figure 1 This is a schematic diagram of a patterned glass diffuser plate provided in Embodiment 1 of the present invention;
[0028] Figure 2 A schematic diagram of the glass diffuser plate provided for Comparative Example 1;
[0029] Figure 3 A schematic diagram of the glass diffuser plate provided for Comparative Example 2.
[0030] The markings in the figure are: 1-glass substrate, 2-optical adhesive layer, 3-optical film, 4-sealing structure, 5-diffusion ink layer, 11-light-incident surface, 12-light-outceasing surface, 13-first pattern structure, 14-second pattern structure, 15-air groove. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0032] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "top," and "bottom," etc., indicating orientation or positional relationships, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein.
[0033] Example 1
[0034] like Figure 1 As shown, this embodiment 1 designs a glass diffuser plate with a patterned structure, which includes the following structural configuration:
[0035] A glass substrate 1 has an incident light surface 11 and an exit light surface 12. The incident light surface 11 is provided with a raised first pattern structure 13, and the exit light surface 12 is provided with a raised second pattern structure 14. The thickness of the glass substrate 1 is set to 1.0 mm. The first pattern structure 13 and the second pattern structure 14 are set to the same structure and are respectively set to spherical pattern structures. The protrusion height of the first pattern structure 13 and the second pattern structure 14 is respectively set to 50.0 μm.
[0036] An optical adhesive layer 2 is stacked on the second pattern structure 14, and a plurality of air grooves 15 are formed between the optical adhesive layer 2 and the second pattern structure 14. The optical adhesive layer 2 is made of OCA optical adhesive, and the thickness of the optical adhesive layer 2 is set to 30.0 μm.
[0037] An optical film 3 is stacked on the optical adhesive layer 2. The optical film 3 is a gain film with a thickness of 45.0 μm.
[0038] A sealing structure 4 is disposed on the light-emitting surface 12 and extends to be tightly fitted to the periphery of the optical film 3, so that a sealed space is formed between the optical film 3 and the light-emitting surface 12 to isolate external moisture. The sealing structure 4 can be formed by curing an acrylic adhesive with a viscosity of 1100-1800 mPa·s.
[0039] And a diffusion ink layer 5, which is stacked on the first pattern structure 13, wherein the thickness of the diffusion ink layer 5 is set to 45.0 μm.
[0040] Comparative Example 1
[0041] like Figure 2 As shown, Comparative Example 1 provides a glass diffuser plate. The difference between Comparative Example 1 and Example 1 is that the first pattern structure 13 is not provided on the light-incident surface 11 of the glass substrate 1 of Comparative Example 1, and the second pattern structure 14 in Example 1 is not provided on the light-emitting surface 12 of the glass substrate 1 of Comparative Example 1. The glass diffuser plate of Comparative Example 1 does not have a sealing structure 4. The rest is the same as Example 1.
[0042] Comparative Example 2
[0043] like Figure 3As shown, Comparative Example 2 provides a glass diffusion plate. The difference between Comparative Example 2 and Example 1 is that the first pattern structure 13 is not provided on the light-incident surface 11 of the glass substrate 1 in Comparative Example 2, and the second pattern structure 14 is not provided on the light-emitting surface 12 of the glass substrate 1 in Comparative Example 2. Instead, a diffusion ink layer 5 identical to that on the light-incident surface 11 is provided on the light-emitting surface 12 to replace the second pattern structure 14 in Example 1. The glass diffusion plate of Comparative Example 2 does not have a sealing structure 4, and the rest is the same as Example 1.
[0044] Brightness tests were conducted on the glass diffuser plates of Example 1 and Comparative Examples 1-2. The results showed that the glass diffuser plate of Example 1 had good brightness and uniformity, while the glass diffuser plate of Comparative Example 1 had acceptable brightness but poor uniformity; and the glass diffuser plate of Comparative Example 2 had good uniformity but poor brightness.
[0045] The amount of diffusion ink used in Example 1 and Comparative Example 1 is similar, but the light diffusion effect of the diffusion plate in Comparative Example 1 is not as good as that in Example 1. Furthermore, the diffusion ink layer 5 in Comparative Example 1 is prone to peeling off and moisture erosion, which leads to a decrease in the brightness, diffusion uniformity, and service life of the diffusion plate. While the diffusion plate in Comparative Example 2 has acceptable light uniformity, it uses a larger amount of diffusion ink, resulting in higher costs and relatively lower production efficiency. Additionally, the diffusion ink layer 5 in Comparative Example 2 is prone to peeling off and moisture erosion, which also leads to a decrease in the brightness, diffusion uniformity, and service life of the diffusion plate.
[0046] The glass diffusion plate of Example 1 has multiple advantages, including low ink consumption, good light diffusion effect, ink layer that is not easy to fall off, and high production efficiency.
[0047] The above-described preferred embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of this utility model. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.
Claims
1. A glass diffusion panel having a patterned structure, characterized by, The glass diffusion plate comprises the following structural arrangement: a glass substrate (1) having an incident light surface (11) and an outgoing light surface (12), the incident light surface (11) being provided with a first raised pattern structure (13), and the outgoing light surface (12) being provided with a second raised pattern structure (14); an optical adhesive layer (2) being arranged on the second pattern structure (14) in a laminated manner, and a plurality of air grooves (15) being formed between the optical adhesive layer (2) and the second pattern structure (14); an optical film (3) being arranged on the optical adhesive layer (2) in a laminated manner; a sealing structure (4) being arranged on the outgoing light surface (12), and the sealing structure (4) extending to tightly fit around the optical film (3) so as to form a sealed space between the optical film (3) and the outgoing light surface (12); and a diffusion ink layer (5) being arranged on the first pattern structure (13) in a laminated manner.
2. The glass diffusion panel with a pattern structure according to claim 1, characterized in that, The thickness of the glass substrate (1) is arranged to be 0.5-1.5 mm.
3. The glass diffusion panel with a pattern structure according to claim 1, characterized in that, The first pattern structure (13) and the second pattern structure (14) are arranged to be the same or different.
4. The glass diffusion panel with a pattern structure according to claim 1 or 3, characterized in that, The first pattern structure (13) and the second pattern structure (14) are respectively arranged to be one or several of a sawtooth structure, a pyramid structure or a spherical structure.
5. The glass diffusion panel with a pattern structure according to claim 1, wherein, The raised height of the second pattern structure (14) is arranged to be greater than the thickness of the optical adhesive layer (2).
6. The glass diffusion panel with a pattern structure according to claim 5, wherein, The raised height of the first pattern structure (13) and the second pattern structure (14) is respectively arranged to be 45.0-80.0 μm; and the thickness of the optical adhesive layer (2) is arranged to be 25.0-45.0 μm.
7. The glass diffusion panel with a pattern structure according to claim 1, wherein, The material of the optical adhesive layer (2) is selected to be OCA or OSA optical adhesive.
8. The glass diffusion panel with a pattern structure according to claim 1, wherein, The optical film (3) is a gain film, including but not limited to a brightness enhancement film, a diffusion film or COPP.
9. The glass diffusion panel with a pattern structure according to claim 1, wherein, The sealing structure (4) is formed by curing an acrylic adhesive with a viscosity of 1100-1800 mPa.s.
10. The glass diffusion panel with a pattern structure according to claim 1, wherein, The thickness of the diffusion ink layer (5) is arranged to be 40.0-70.0 μm.