Spraying side sticker for improving bright edge of light guide plate

Abstract

The utility model relates to the technical field of light guide plates, and discloses a spraying side patch for improving the bright edge of a light guide plate, which comprises a light guide plate and a second patch, a first side patch and a light bar are arranged outside the light guide plate, and the first side patch comprises a PE film outer layer, a middle mirror surface layer, a light absorption particle spraying layer and a colloid layer. The middle mirror surface layer is arranged between the PE film outer layer and the light absorption particle spraying layer, and the colloid layer is connected to the surface of the light absorption particle spraying layer. According to the utility model, the mirror reflection rate of light at the edge of the light guide plate can be reduced and the diffuse reflection rate of the light can be enhanced by changing the side patch material at the edge of the light guide plate through the arranged first side patch, so that the bright side visual effect of the edge of the light guide plate is reduced, and the display effect is improved; according to the utility model, the first side patch respectively solves the problem of bright side abnormity caused by mirror reflection at the side edge of the light guide plate, solves the problem of the process of silk-screen black oil at the periphery of the diffusion sheet in the existing improvement scheme, reduces the cost of the module and improves the yield of the whole machine.

Description

Technical Field

[0001] The utility model relates to the technical field of light guide plates, in particular to a spray-coated side sticker for improving the bright edge of a light guide plate. Background Art

[0002] The light guide plate is made of optical-grade acrylic / MS sheet, and then a high-tech material with extremely high reflectivity and no light absorption is used. The light guide points are printed on the bottom of the optical-grade acrylic sheet using hot rolling dot technology. The optical-grade acrylic sheet is used to absorb the light emitted from the lamp and stay on the surface of the optical-grade acrylic sheet. When the light hits each light guide point, the reflected light will diffuse to all angles, and then destroy the reflection condition and be emitted from the front of the light guide plate. Through various light guide points of different densities and sizes, the light guide plate can emit light evenly. As user demand increases, some borderless and high-screen displays have entered the development stage. In order to more efficiently maximize the light efficiency of the light guide plate, in the prior art, a light guide plate side sticker with a certain reflectivity is attached to the non-light-incident side of the light guide plate, thereby optimizing the light efficiency of the light guide plate.

[0003] The light guide plate side stickers currently used mainly use white or silver substrates as the reflective layer, and the reflective surface of the reflective substrate is processed with a certain thickness of transparent adhesive layer, which is attached to the non-light-incoming end face of the light guide plate through the adhesive layer. The installation is convenient and simple. However, with further in-depth use, the applicant found that the silver-plated film as the substrate silver reflection has a reflectivity of more than 97.5%. Most of the light is reflected by the mirror surface of the side sticker, and the diffuse reflection is weak, which will cause strong visual visible light at the edge of the light guide plate, forming a bright edge. With the increase in market demand and consumers' higher and higher requirements for product visual effects and quality, some borderless and ultra-narrow border models have some serious side bright edge problems, which are prone to customer complaints and the risk of non-compliance with standards.

[0004] Secondly, the existing technology discloses an improvement plan of screen printing black ink around the diffuser. Although there is a certain degree of improvement, its disadvantages are that the ink easily falls off and causes poor backlighting, and the production efficiency is low and the process cost is high, which requires further improvement. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a spray-coated side sticker for improving the bright edge of a light guide plate, solving the problems raised by the above-mentioned background technology.

[0006] The utility model provides the following technical solution: a spray-coated side patch for improving the bright edge of a light guide plate, comprising a light guide plate and a second patch, wherein a first side patch and a light strip are arranged outside the light guide plate, wherein the first side patch comprises a PE film outer layer, an intermediate mirror layer, a light-absorbing particle spray layer and a colloid layer, wherein the intermediate mirror layer is installed between the PE film outer layer and the light-absorbing particle spray layer, and the colloid layer is connected to the surface of the light-absorbing particle spray layer.

[0007] The light-absorbing particle spray layer includes a silver-plated film layer, light-absorbing particles and a water-based pressure-sensitive adhesive. The light-absorbing particles are evenly sprayed on the surface of the silver-plated film layer through the water-based pressure-sensitive adhesive, and the thickness of the light-absorbing particle spray layer is between 5-20um, thereby reducing the mirror reflectivity of the silver-plated film layer and improving the diffuse reflectivity.

[0008] The outer layer of the PE film is made of black PE film material, and the thickness of the outer layer of the PE film is between 20-50um, which serves the purpose of supporting the outer layer of the PE film, the middle mirror layer, and the light-absorbing particle spray layer.

[0009] Preferably, the intermediate mirror layer can reflect the light back to the light guide plate in a mirror-like manner, and the thickness of the intermediate mirror layer is between 10-40 um.

[0010] The colloid layer can be selectively connected to the first side patch assembly on the surface of the corresponding position of the light guide plate by adhesive connection. The thickness of the colloid layer is 15-30um. The thickness of the colloid layer affects the adhesion between the first side patch and the light guide plate, and the two are positively correlated.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The utility model can reduce the mirror reflectivity of light at the edge of the light guide plate by changing the side sticker material at the edge of the light guide plate, enhance the diffuse reflectivity of light, and then reduce the bright edge visual effect of the edge of the light guide plate, thereby improving the display effect.

[0013] 2. The first side patch provided in the utility model solves the problem of abnormal bright edge caused by mirror reflection on the side of the light guide plate and the process of silk-screening black oil around the diffuser in the existing improvement solution, thereby reducing the cost of the module and improving the yield of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a top view schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a cross-sectional schematic diagram of the patch on the first side of the structure of the utility model;

[0016] Figure 3 It is a front view schematic diagram of the patch on the first side of the structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the structured light transmission experiment of the utility model.

[0018] In the figure: 1, light guide plate; 2, first side patch; 21, PE film outer layer; 22, intermediate mirror layer; 23, light-absorbing particle spray layer; 24, colloid layer; 3, light strip; 4, second patch. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 A spray-coated side patch for improving the bright edge of a light guide plate comprises a light guide plate 1 and a second patch 4. The second side patch 4 is a side patch structure disclosed in the prior art. A first side patch 2 and a light bar 3 are arranged outside the light guide plate 1. The first side patch 2 comprises a PE film outer layer 21, an intermediate mirror layer 22, a light-absorbing particle spray layer 23 and a colloid layer 24. The intermediate mirror layer 22 is installed between the PE film outer layer 21 and the light-absorbing particle spray layer 23. The colloid layer 24 is connected to the surface of the light-absorbing particle spray layer 23.

[0021] The light-absorbing particle spray layer 23 includes a silver-plated film layer, light-absorbing particles and a water-based pressure-sensitive adhesive. The light-absorbing particles are evenly sprayed on the surface of the silver-plated film layer through the water-based pressure-sensitive adhesive, and the thickness of the light-absorbing particle spray layer 23 is between 5 and 20 μm, thereby reducing the specular reflectivity of the silver-plated film layer and improving the diffuse reflectivity.

[0022] The PE film outer layer 21 is made of black PE film material, and the thickness of the PE film outer layer 21 is between 20-50um, which serves the purpose of supporting the PE film outer layer 21, the intermediate mirror layer 22, and the light-absorbing particle spray layer 23. The intermediate mirror layer 22 can reflect the light back to the light guide plate 1, and the thickness of the intermediate mirror layer 22 is between 10-40um.

[0023] The colloid layer 24 can be used to assemble and connect the first side patch 2 on the surface of the corresponding position of the light guide plate 1 by adhesive connection. The thickness of the colloid layer 24 is 15-30um. The thickness of the colloid layer 24 affects the adhesion between the first side patch 2 and the light guide plate 1, and the two are positively correlated.

[0024] Working principle: When in use, the light-absorbing particle spray layer 23 formed by mixing light-absorbing particles and water-based pressure-sensitive adhesive and evenly spraying them on the silver-plated film layer can reduce the mirror reflectivity of the silver-plated film layer and increase the diffuse reflectivity, thereby reducing the bright edge visual effect of the edge of the light guide plate 1, thereby improving the display effect. The intermediate mirror layer 22 can reflect the light back to the light guide plate 1 in a mirror manner to ensure the use effect. The thickness of the colloid layer 24 affects the adhesion between the first side patch 2 and the light guide plate 1. The two are positively correlated, which can fully ensure the connection stability between the first side patch 2 and the light guide plate 1.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. At the same time, in the drawings of the present utility model, the fill pattern is only for distinguishing the layers, without any other limitation.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spray-coated side sticker for improving the bright edge of a light guide plate, comprising a light guide plate (1) and a second sticker (4), characterized in that: The light guide plate (1) is provided with a first side patch (2) and a light bar (3) outside. The first side patch (2) comprises a PE film outer layer (21), an intermediate mirror layer (22), a light absorbing particle spray layer (23) and a colloid layer (24). The intermediate mirror layer (22) is installed between the PE film outer layer (21) and the light absorbing particle spray layer (23), and the colloid layer (24) is connected to the surface of the light absorbing particle spray layer (23).

2. The spray-coated side sticker for improving the bright edge of a light guide plate according to claim 1, characterized in that: The light-absorbing particle spray layer (23) comprises a silver-plated film layer, light-absorbing particles and a water-based pressure-sensitive adhesive. The light-absorbing particles are evenly sprayed on the surface of the silver-plated film layer through the water-based pressure-sensitive adhesive, and the thickness of the light-absorbing particle spray layer (23) is between 5 and 20 μm.

3. The spray-coated side sticker for improving the bright edge of a light guide plate according to claim 1, characterized in that: The PE film outer layer (21) is made of black PE film material, and the thickness of the PE film outer layer (21) is between 20-50 um.

4. The spray-coated side sticker for improving the bright edge of a light guide plate according to claim 1, characterized in that: The intermediate mirror layer (22) is capable of specularly reflecting light back to the light guide plate (1), and the thickness of the intermediate mirror layer (22) is between 10 and 40 μm.

5. The spray-coated side sticker for improving the bright edge of a light guide plate according to claim 1, characterized in that: The colloid layer (24) can be assembled and connected to the first side patch (2) on the surface of the corresponding position of the light guide plate (1) by means of an adhesive connection, and the thickness of the colloid layer (24) is 15-30 um.

Images