Composite light guide plate and display device

Abstract

The utility model relates to display device technical field especially relates to a composite light guide plate and display device, the structure of composite light guide plate includes light guide plate main part, and the protective layer is fixed in the first side of light guide plate main part, and the first side of light guide plate main part is provided with the light reflection particle between the protective layer and light guide plate main part. The composite light guide plate and display device can solve the problem that the assembly form of the existing reflector and light guide plate leads to product defect.

Description

Technical Field

[0001] This application relates to the field of display device technology, and in particular to a composite light guide plate and display device. Background Technology

[0002] Currently, the main components of mainstream notebook modules on the market consist of a backlight, an LCD panel, and edge-sealing adhesive. The backlight, as the light source, comprises a backplate, frame, reflector, light guide plate, film material, and LEDs. The reflector and light guide plate are separate components, assembled and fixed together using adhesives for the light guide plate and reflector.

[0003] However, during the assembly of the reflector and light guide plate, foreign objects such as hair and debris may drift between them, ultimately causing display defects. During mechanical testing, if the particles on the reflector surface and the dots on the light guide plate are not misaligned, top whitening may occur after compression. Furthermore, during use, if the reflector and light guide plate are not securely fixed, relative displacement may occur, causing friction between them and resulting in scratches and product defects. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a composite light guide plate and display device to solve the problem that the existing assembly method of reflective sheet and light guide plate is prone to product defects.

[0005] According to a first aspect of the present invention, a composite light guide plate is provided, wherein the composite light guide plate includes: a light guide plate body; and a protective layer fixed to a first side surface of the light guide plate body, and reflective particles are disposed between the protective layer and the first side surface of the light guide plate body.

[0006] Preferably, the first side of the light guide plate body is provided with a plurality of dot structures, the plurality of dot structures are arranged in an array, the first side of the light guide plate body is coated with a reflective particle layer, the reflective particle layer includes a plurality of reflective particles, and the protective layer is coated on the side of the reflective particle layer away from the light guide plate body.

[0007] Preferably, the dot structure is recessed into the interior of the light guide plate body.

[0008] Preferably, the reflective particle layer comprises microcavity structured particles, reflective cavity particles, and / or polymer reflective materials.

[0009] Preferably, the protective layer comprises inorganic particles.

[0010] Preferably, the reflective particle layer and the protective layer form a clearance area, which is used to avoid the circuit board of the display device, and the sum of the thicknesses of the reflective particle layer and the protective layer is not greater than the distance between the bottom surface of the circuit board and the first side surface of the light guide plate body.

[0011] Preferably, the protective layer is a reflective sheet, which is bonded to the first side of the light guide plate body by optical adhesive. The reflective particles are disposed between the reflective sheet and the light guide plate body. The first side of the light guide plate body is provided with a plurality of dot structures, and the reflective particles and the dot structures are arranged alternately.

[0012] Preferably, the protective layer is a substrate, and a dot structure is formed on the side of the substrate near the light guide plate body. Multiple reflective particles are fixed on the side of the substrate with the dot structure, and the reflective particles and the dot structure are arranged alternately. The side of the substrate with the dot structure is bonded and fixed to the first side of the light guide plate body.

[0013] Preferably, the dot structure protrudes from the surface of the substrate.

[0014] According to a second aspect of the present invention, a display device is provided, wherein the display device includes the composite light guide plate as described above.

[0015] The composite light guide plate and display device of this utility model have a protective layer fixed to the first side of the light guide plate body, and reflective particles are disposed between the protective layer and the first side of the light guide plate body. This replaces the single-component assembly of the light guide plate and reflective sheet, eliminating the assembly process and preventing the introduction of foreign objects during assembly. Furthermore, since the light guide plate body and protective layer are fixed in the composite light guide plate, there is no relative friction, eliminating the risk of scratches leading to product defects. Simultaneously, because the material and thickness of the protective layer are adjustable, the risk of top whitening due to compression is greatly reduced. This effectively solves the problem of product defects easily caused by the existing assembly method of reflective sheet and light guide plate.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the composite light guide plate and display device according to the present invention.

[0019] Figure 2 This is a schematic diagram of the first embodiment of the composite light guide plate according to the present invention.

[0020] Figure 3 This is a partial enlarged view of the first embodiment of the composite light guide plate according to the present invention.

[0021] Figure 4 This is a schematic diagram of a second embodiment of the composite light guide plate according to the present invention.

[0022] Figure 5 This is a schematic diagram of the third embodiment of the composite light guide plate according to the present invention.

[0023] Figure 6 This is a partial enlarged view of the third embodiment of the composite light guide plate according to the present invention.

[0024] Reference numerals in the attached diagram: 1-Light guide plate body; 2-Protective layer; 3-Reflective particles; 30-Reflective particle layer; 4-Dot structure; 5-LCD panel; 6-Backlight; 7-Optical adhesive. Detailed Implementation

[0025] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0026] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0027] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0028] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0029] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0030] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0031] The terminology used herein is for the purpose of describing various examples only and is not intended to limit the examples. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0032] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0033] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0034] like Figures 1 to 6 As shown, according to a first aspect of the present invention, a composite light guide plate is provided, which includes a light guide plate body 1 and a protective layer 2.

[0035] In the following description, reference will be made to Figures 1 to 6 The specific structure of the above-mentioned components of the composite light guide plate and the connection relationship of the above-mentioned components are described in detail.

[0036] like Figures 1 to 6 As shown, in this embodiment, the protective layer 2 can be fixedly disposed on the first side of the light guide plate body 1. The first side of the light guide plate body 1 can be the side of the light guide plate body 1 facing the backlight 6, and the first side of the light guide plate body 1 is disposed away from the liquid crystal panel 5. Specifically, as shown... Figure 1 As shown, the first side surface of the light guide plate body 1 can be the bottom surface of the light guide plate body 1. Reflective particles 3 are disposed between the protective layer 2 and the first side surface of the light guide plate body 1, thereby replacing the existing method of assembling the light guide plate and reflective sheet as separate components, thus eliminating the assembly process and preventing the introduction of foreign objects during assembly of the light guide plate and reflective sheet. Furthermore, since the light guide plate body 1 and the protective layer 2 are fixed in the composite light guide plate, there is no relative friction, eliminating the risk of product defects caused by friction scratches. At the same time, since the material and thickness of the protective layer 2 are adjustable, the risk of top whitening caused by compression of the composite light guide plate is greatly reduced. This design effectively avoids product defects that may result from the existing assembly method of reflective sheet and light guide plate.

[0037] Preferred, such as Figure 2 and Figure 3As shown, in the first embodiment, the shape of the light guide plate body 1 can be approximately cuboid. Multiple dot structures 4 can be provided on the first side surface of the light guide plate body 1 (i.e., the bottom surface of the light guide plate body 1). These multiple dot structures 4 can be arranged in an array on the first side surface of the light guide plate body 1. Specifically, multiple dot structures 4 can be arranged in rows at equal intervals along the length direction of the light guide plate body 1, and then the rows of dot structures 4 can be arranged at equal intervals along the width direction of the light guide plate body 1, thereby ensuring that the dot structures 4 are evenly distributed on the first side surface of the light guide plate body 1. Simultaneously, a reflective particle layer 30 is also coated on the first side surface of the light guide plate body 1. The reflective particle layer 30 can include multiple reflective particles 3 to reflect light. A protective layer 2 can be coated on the side of the reflective particle layer 30 away from the light guide plate body 1; that is, the reflective particle layer 30 is coated first, followed by the protective layer 2, to prevent wear on the reflective particle layer 30.

[0038] Furthermore, preferably, such as Figure 2 and Figure 3 As shown, in this embodiment, the dot structure 4 can be recessed into the interior of the light guide plate body 1. Specifically, the dot structure 4 can be formed with a hemispherical arc surface to cooperate with the reflective particle layer 30. The arc surface of the dot structure 4 can be recessed into the interior of the light guide plate body 1, resulting in multiple recesses on the bottom surface of the light guide plate body 1. In this case, applying the reflective particle layer 30 can effectively prevent whitening caused by compression between the reflective particles 3 and the dot structure 4. However, it is not limited to this. Setting the dot structure 4 as a recessed structure is only a preferred case in this embodiment. As long as the function of the dot structure 4 can be utilized, the dot structure 4 can also be set in other ways, for example, the dot structure 4 can be set as a hemispherical protrusion protruding from the bottom surface of the light guide plate body 1.

[0039] In addition, preferred, such as Figure 2 and Figure 3 As shown, in this embodiment, the reflective particle layer 30 may include microcavity structured particles, reflective cavity particles, and / or a polymeric reflective material. Specifically, the type of reflective particles 3 in the reflective particle layer 30 can be any one of the three: microcavity structured particles, reflective cavity particles, and polymeric reflective materials, or any combination of two or all three. For example, the reflective particle layer 30 may contain a mixture of microcavity structured particles and reflective cavity particles, or it may contain only reflective cavity particles. The high-reflectivity composite material can be made of a resin (such as acrylic resin) mixed with a high-refractive-index filler (such as titanium dioxide or barium sulfate), thereby achieving diffuse reflection and avoiding the generation of light spots.

[0040] Further optimized, such as Figure 2 and Figure 3As shown, in this embodiment, the protective layer 2 may include inorganic particles. Specifically, the inorganic particles in the protective layer 2 may be PET particles, thereby protecting the reflective particle layer 30 and preventing it from being worn. However, this is not a limitation; using PET particles as the inorganic particles in the protective layer 2 is merely one example in this embodiment. Other materials can be used as long as the protective layer 2 functions properly. In actual use, the reflective particles 3 and inorganic particles coated on the bottom surface of the light guide plate body 1 can be bonded and fixed using optical adhesive, thereby preventing the reflective particles 3 and inorganic particles from falling off the bottom surface of the light guide plate body 1. Since the assembly process of the light guide plate and the reflective sheet is eliminated, the introduction of foreign objects can be avoided. Furthermore, since the reflective particles 3 and inorganic particles are already fixed to the bottom surface of the light guide plate body 1, there is no relative friction between the reflective particles 3 and inorganic particles and the dot structure 4, thus eliminating the risk of product defects caused by friction scratches.

[0041] Preferably, in the embodiment, the reflective particle layer 30 and the protective layer 2 are in the form of... Figure 1 A clearance area can be formed in the horizontal direction, meaning that the reflective particle layer 30 and the protective layer 2 may not completely cover the bottom surface of the light guide plate body 1. This clearance area can be used to avoid interference with the circuit board of the display device. Specifically, the circuit board can be an LED FPC. In some display devices, the LED can be located at the end of the light guide plate body 1. The bottom surface of the LED is connected to the circuit board, and the circuit board extends to the bottom of the light guide plate body 1. In this case, to avoid interference between the circuit board and the reflective particle layer 30 and the protective layer 2, a clearance area can be formed on the bottom surface of the light guide plate body 1 to reserve sufficient space for the circuit board.

[0042] Furthermore, preferably, in this embodiment, the thickness of the reflective particle layer 30 and the protective layer 2 can be set according to the thickness of the circuit board. Specifically, the sum of the thicknesses of the reflective particle layer 30 and the protective layer 2 can be no greater than the distance between the bottom surface of the circuit board and the first side surface of the light guide plate body 1. This allows the circuit board to play a supporting role, and when the display device is subjected to pressure, the circuit board can withstand the pressure before the reflective particle layer 30 and the protective layer 2, thereby giving the composite light guide plate excellent anti-whitening effect.

[0043] Preferred, such as Figure 4As shown, in the second embodiment, the protective layer 2 can be a reflector. The reflector can be bonded to the first side of the light guide plate body 1 using optical adhesive 7, and the reflective particles 3 can be disposed between the reflector and the light guide plate body 1. Specifically, the top surface of the reflector and the bottom surface of the light guide plate body 1 can be bonded and fixed near the end using optical adhesive 7. The reflective particles 3 can be microcavity structure particles, reflective cavity particles, and / or polymer reflective materials. Simultaneously, multiple dot structures 4 are also provided on the first side of the light guide plate body 1. The dot structures 4 can protrude from the bottom surface of the light guide plate body 1 or be recessed into the interior of the light guide plate body 1. The reflective particles 3 and the dot structures 4 are staggered to avoid top whitening.

[0044] During production, after the large-format dot matrix of the light guide plate body 1 is fabricated, the reflective sheet is glued to the bottom surface of the light guide plate body 1 using optical adhesive 7. This optimizes the initial position of the reflective sheet and the light guide plate body 1 (i.e., the reflective particles 3 and the dot matrix structure 4 are staggered), resulting in a larger composite light guide plate. Then, based on actual usage requirements, the larger composite light guide plate is cut into smaller pieces for placement within the display device. This pre-fabrication of the reflective sheet and the light guide plate body 1 into a composite light guide plate avoids the need for assembling individual components of the light guide plate and reflective sheet in subsequent processes, effectively preventing the introduction of foreign objects during assembly. Furthermore, since the reflective sheet and the light guide plate body 1 are fixed together with optical adhesive 7, there is no relative friction, eliminating the risk of product defects caused by friction scratches.

[0045] Preferred, such as Figure 5 and Figure 6 As shown, in the third embodiment, the protective layer 2 can be a substrate. A dotted structure 4 can be formed on the side of the substrate near the light guide plate body 1, and multiple reflective particles 3 are fixed on the side of the substrate with the dotted structure 4. Specifically, the dotted structure 4 can protrude from the top surface of the substrate. The reflective particles 3 can be microcavity structure particles, reflective cavity particles, and / or polymer reflective materials. The reflective particles 3 can be fixed to the top surface of the substrate by hot pressing or adhesive bonding. The reflective particles 3 can be staggered with the dotted structure 4 to avoid top whitening. The side of the substrate with the dotted structure 4 can be bonded to the first side of the light guide plate body 1 using optical adhesive, allowing the substrate to be fixed to the bottom surface of the light guide plate body 1. Therefore, by forming a composite light guide plate from the substrate and the light guide plate body 1, the assembly of the light guide plate and reflective sheet as individual components in subsequent processes is avoided, effectively preventing the introduction of foreign matter during assembly. Furthermore, since the substrate and the light guide plate body 1 are fixed with optical adhesive, there is no relative friction, eliminating the risk of product defects caused by friction scratches. The reflective particles 3 and the dot structure 4 are fixed to the top surface of the substrate, which effectively prevents top whitening.

[0046] In addition, such as Figure 1 As shown, according to a second aspect of the present invention, a display device is provided, the display device including the composite light guide plate as described above.

[0047] During use, the composite light guide plate eliminates the need for assembly by placing reflective particles 3 between the protective layer 2 and the first side of the light guide plate body 1. This replaces the existing method of assembling the light guide plate and reflective sheet as separate components. This also prevents the introduction of foreign objects during assembly. Furthermore, since the light guide plate body 1 and protective layer 2 are fixed in the composite light guide plate, there is no relative friction, eliminating the risk of product defects caused by friction scratches. Simultaneously, because the material and thickness of the protective layer 2 are adjustable, the risk of the composite light guide plate developing a white top due to compression is greatly reduced.

[0048] Finally, it should be noted that the above embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. A composite light guide plate, disposed in a display device, characterized in that, The composite light guide plate includes: The main body of the light guide plate; and A protective layer is fixed to the first side of the light guide plate body, and reflective particles are disposed between the protective layer and the first side of the light guide plate body.

2. The composite light guide plate according to claim 1, wherein The first side of the light guide plate body is provided with a plurality of dot structures, which are arranged in an array. The first side of the light guide plate body is coated with a reflective particle layer, which includes a plurality of reflective particles. The protective layer is coated on the side of the reflective particle layer away from the light guide plate body.

3. The composite light guide plate according to claim 2, wherein The dot structure is recessed into the interior of the light guide plate body.

4. The composite light guide plate according to claim 2, wherein The reflective particle layer includes microcavity structured particles, reflective cavity particles, and / or polymer reflective materials.

5. The composite light guide plate according to claim 2, wherein The protective layer includes inorganic particles.

6. The composite light guide plate according to claim 2, wherein The reflective particle layer and the protective layer form a clearance area, which is used to avoid the circuit board of the display device. The sum of the thicknesses of the reflective particle layer and the protective layer is not greater than the distance between the bottom surface of the circuit board and the first side surface of the light guide plate body.

7. The composite light guide plate according to claim 1, wherein The protective layer is a reflective sheet, which is bonded to the first side of the light guide plate body with optical adhesive. The reflective particles are disposed between the reflective sheet and the light guide plate body. The first side of the light guide plate body is provided with multiple dot structures, and the reflective particles and the dot structures are arranged alternately.

8. The composite light guide plate according to claim 1, wherein The protective layer is a substrate, and a dot structure is formed on the side of the substrate near the main body of the light guide plate. Multiple reflective particles are fixed on the side of the substrate with the dot structure. The reflective particles and the dot structure are arranged alternately. The side of the substrate with the dot structure is bonded and fixed to the first side of the main body of the light guide plate.

9. The composite light guide plate according to claim 8, wherein The dot structure protrudes from the surface of the substrate.

10. A display device, characterized by comprising: The display device includes the composite light guide plate according to any one of claims 1 to 9.

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