Ultrathin flexible bendable light guide plate structure

Abstract

The utility model provides an ultrathin flexible bendable light guide plate structure, which belongs to the technical field of optical lighting equipment and comprises a bottom frame, a light-transmitting plate fixedly mounted on the inner wall of the bottom frame, a light-transmitting hole formed in the surface of the light-transmitting plate, a core component arranged on the inner wall of the light-transmitting plate and a connecting component arranged on the surface of the core component. The reflecting plate is fixedly connected to the inner wall of the bottom frame. Through the arrangement of the multi-layer composite structure, the excellent optical performance and the flexible bendable characteristic of the light guide plate in the ultrathin form are achieved, the polymethyl methacrylate core light guide layer is matched with the glass bead scattering layer, and even area light source output is achieved while the light conduction efficiency is guaranteed; due to the unique design of the flexible coating and the transparent polyimide substrate, the product has excellent bending performance and can adapt to various curved surface mounting requirements, and due to the combination of the ultrathin glass filling layer and the atomized PET film mounting layer, the structural stability is ensured, and good optical interface characteristics are maintained.

Description

Technical Field

[0001] This utility model belongs to the field of optical lighting equipment technology, specifically relating to an ultra-thin flexible bendable light guide plate structure. Background Technology

[0002] Flexible light guide plate technology originated from the need to improve traditional rigid light guide plates in the late 20th century. With the rapid development of liquid crystal display technology, early rigid light guide plates made of acrylic or polycarbonate were limited by their large thickness and inflexibility, making it difficult to meet the growing demand for flexible displays. In the early 21st century, with breakthroughs in flexible substrates such as polyimide and polyethylene terephthalate, as well as advancements in microstructure optical design technology, flexible light guide plate technology began to develop rapidly.

[0003] While achieving ultra-thinness and flexibility, it is often difficult to balance optical performance and mechanical strength. Especially under repeated bending conditions, traditional flexible light guide plates are prone to problems such as micro-cracks and optical interface separation, resulting in severe light efficiency degradation and a significantly shortened service life. Utility Model Content

[0004] The purpose of this invention is to provide an ultra-thin, flexible, bendable light guide plate structure, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An ultra-thin, flexible, bendable light guide plate structure includes,

[0007] The components include a base frame, a light-transmitting plate fixedly installed on the inner wall of the base frame, light-transmitting holes disposed on the surface of the light-transmitting plate, a core component disposed on the inner wall of the light-transmitting plate, a connecting component disposed on the surface of the core component, and a reflector fixedly connected to the inner wall of the base frame.

[0008] As a preferred embodiment of this utility model, the core component includes a protective layer fixedly connected to the inner wall of the light-transmitting plate, and a core light guide layer fixedly connected to the surface of the protective layer.

[0009] As a preferred embodiment of this utility model, the core component further includes a scattering layer fixedly connected to the surface of the core light guide layer, and a flexible coating applied to the surface of the scattering layer.

[0010] As a preferred embodiment of the present invention, the core component further includes a connecting layer fixedly connected to the surface of the flexible coating, and a flexible substrate fixedly connected to the surface of the connecting layer.

[0011] In a preferred embodiment of this utility model, the core light guide layer is made of polymethyl methacrylate material with a thickness of 0.05mm-0.1mm, the scattering layer is supported by uniform glass microspheres and uniformly laid on the surface of the core light guide layer, the flexible coating is made of polyurethane acrylate material, the connecting layer is made of optical adhesive material, and the flexible substrate is made of transparent polyimide material.

[0012] In a preferred embodiment of the present invention, the connecting assembly includes a filling layer fixedly connected to the surface of the flexible substrate, and a mounting layer fixedly connected to the surface of the filling layer.

[0013] In a preferred embodiment of this utility model, the filling layer is supported by ultra-thin glass with a thickness of 10-30μm, and the mounting layer is made of atomized PET film material.

[0014] Compared with existing technologies, the advantages of this invention are as follows: Through the multi-layer composite structure, the light guide plate achieves excellent optical performance and flexible bendability in an ultra-thin form. The polymethyl methacrylate core light guide layer, combined with the glass microsphere scattering layer, ensures efficient light transmission while achieving uniform surface light source output. The unique flexible coating and transparent polyimide substrate design give the product excellent bending performance, adapting to various curved surface installation requirements. The combination of the ultra-thin glass filling layer and the atomized PET film mounting layer ensures structural stability while maintaining good optical interface characteristics. The white PET reflective film effectively recovers backlight leakage, improving light energy utilization. The device achieves tight bonding through optical adhesive, maintaining stable optical performance even under repeated bending conditions. This solves the technical bottleneck of traditional light guide plates being thick and rigid, providing an ideal lightweight solution for emerging application fields such as flexible displays and curved lighting. Simultaneously, the antioxidant properties of the polyurethane acrylate coating effectively extend the product's service life in complex environments. Attached Figure Description

[0015] 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. Among them:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram showing the connection between the core components and the connecting components of this utility model;

[0018] Figure 3This is a schematic diagram of the overall structure of the core components of this utility model;

[0019] Figure 4 This is a schematic diagram of the overall connection component of this utility model.

[0020] In the diagram: 101, bottom frame; 102, light-transmitting plate; 103, light-transmitting hole; 104, core component; 104a, protective layer; 104b, core light guide layer; 104c, scattering layer; 104d, flexible coating; 104e, connecting layer; 104f, flexible substrate; 105, connecting component; 105a, filling layer; 105b, mounting layer; 106, reflector. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0024] Example

[0025] Reference Figures 1-4 This is an embodiment of the present invention, which provides an ultrathin, flexible, bendable light guide plate structure, comprising:

[0026] The system includes a base frame 101, a light-transmitting plate 102 fixedly installed on the inner wall of the base frame 101, a light-transmitting hole 103 on the surface of the light-transmitting plate 102, a core component 104 on the inner wall of the light-transmitting plate 102, a connecting component 105 on the surface of the core component 104, and a reflector 106 fixedly connected to the inner wall of the base frame 101.

[0027] The reflector 106 is made of white PET reflective film with a thickness of 20-50μm, which reflects the leaked light back to the light guide layer and improves the light utilization rate.

[0028] Specifically, the core component 104 includes a protective layer 104a fixedly connected to the inner wall of the light-transmitting plate 102, and a core light guide layer 104b fixedly connected to the surface of the protective layer 104a. The core component 104 also includes a scattering layer 104c fixedly connected to the surface of the core light guide layer 104b, and a flexible coating 104d coated on the surface of the scattering layer 104c. The core component 104 also includes a connecting layer 104e fixedly connected to the surface of the flexible coating 104d, and a flexible substrate 104f fixedly connected to the surface of the connecting layer 104e.

[0029] The flexible coating 104d helps to improve the oxidation resistance of the device and extend its service life.

[0030] Furthermore, the connection component 105 includes a filling layer 105a fixedly connected to the surface of the flexible substrate 104f, and a mounting layer 105b fixedly connected to the surface of the filling layer 105a.

[0031] Preferably, the filler layer 105a is supported by an ultra-thin glass with a thickness of 10-30 μm, and the mounting layer 105b is made of atomized PET film material.

[0032] It should be noted that the core light guide layer 104b is made of polymethyl methacrylate material with a thickness of 0.05mm-0.1mm, the scattering layer 104c is supported by uniform glass microspheres and is uniformly laid on the surface of the core light guide layer 104b, the flexible coating 104d is made of polyurethane acrylate material, the connecting layer 104e is made of optical adhesive material, and the flexible substrate 104f is made of transparent polyimide material.

[0033] In use, the light source enters the core light guide layer 104b from the side of the light guide plate. Since the core light guide layer 104b is made of high-transmittance polymethyl methacrylate, the light is conducted through total internal reflection within the light guide layer. When the light reaches the scattering layer 104c, the uniformly distributed glass microspheres scatter the light, disrupting the total internal reflection condition. This allows the light to exit uniformly from the front of the core light guide layer 104b. Some of the light leaking to the back is efficiently reflected back to the core light guide layer 104b by the white PET reflective film of the reflector 106, improving light energy utilization. The emitted light then passes sequentially through a polyurethane acrylic... The scattering layer 104c of the ester flexible coating 104d and the transparent polyimide flexible substrate 104f achieve ultra-thin flexible bending characteristics while maintaining excellent light transmittance. The ultra-thin glass of the filling layer 105a and the atomized PET film of the mounting layer 105b together form a stable optical interface, ensuring that the light can still maintain uniform light output during bending. The optical adhesive of the protective layer 104a and the connecting layer 104e achieves tight bonding between the multi-layer structure. The anti-oxidation properties of the flexible coating 104d effectively extend the life of the device in the bending environment. The ultra-thin light guide plate still maintains stable and uniform surface light source output in the bending state.

[0034] In summary, by using an ultra-thin core light guide layer 104b made of polymethyl methacrylate (PMMA) and a glass microsphere scattering layer 104c, efficient light transmission and uniform scattering are achieved, improving light energy utilization efficiency. The reflector 106 uses a white PET reflective film to effectively recover leaked light, further optimizing optical performance. The polyurethane acrylate flexible coating 104d and the transparent polyimide flexible substrate 104f enable the light guide plate to maintain excellent optical performance while possessing outstanding flexibility and bending characteristics, adapting to various curved surface installation requirements. The multi-layer composite structure is tightly bonded by optical adhesive, and the ultra-thin glass of the filling layer 105a and the atomized PET film mounting layer 105b together ensure the stability of the optical interface, allowing the light guide plate to maintain uniform light output even under repeated bending. The antioxidant properties of the flexible coating 104d significantly extend the product's service life in complex operating environments, and the overall structural thickness is controlled within an extremely thin range, achieving a lightweight and flexible characteristic that traditional rigid light guide plates cannot achieve, providing a reliable solution for innovative applications such as flexible displays and curved lighting.

[0035] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0036] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0037] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An ultra-thin, flexible, bendable light guide plate structure, characterized in that: include, The base frame (101), the light-transmitting plate (102) fixedly installed on the inner wall of the base frame (101), the light-transmitting hole (103) provided on the surface of the light-transmitting plate (102), the core component (104) provided on the inner wall of the light-transmitting plate (102), the connecting component (105) provided on the surface of the core component (104), and the reflector (106) fixedly connected to the inner wall of the base frame (101).

2. The ultra-thin flexible bendable light guide plate structure according to claim 1, characterized in that: The core component (104) includes a protective layer (104a) fixedly connected to the inner wall of the light-transmitting plate (102), and a core light guide layer (104b) fixedly connected to the surface of the protective layer (104a).

3. The ultra-thin flexible bendable light guide plate structure according to claim 2, characterized in that: The core component (104) also includes a scattering layer (104c) fixedly connected to the surface of the core light guide layer (104b), and a flexible coating (104d) coated on the surface of the scattering layer (104c).

4. The ultra-thin flexible bendable light guide plate structure according to claim 3, characterized in that: The core component (104) also includes a connecting layer (104e) fixedly connected to the surface of the flexible coating (104d), and a flexible substrate (104f) fixedly connected to the surface of the connecting layer (104e).

5. The ultra-thin flexible bendable light guide plate structure according to claim 4, characterized in that: The core light guide layer (104b) is made of polymethyl methacrylate with a thickness of 0.05mm-0.1mm. The scattering layer (104c) is supported by uniform glass microspheres and uniformly laid on the surface of the core light guide layer (104b). The flexible coating (104d) is made of polyurethane acrylate. The connecting layer (104e) is made of optical adhesive. The flexible substrate (104f) is made of transparent polyimide.

6. The ultra-thin flexible bendable light guide plate structure according to claim 5, characterized in that: The connection assembly (105) includes a filling layer (105a) fixedly connected to the surface of the flexible substrate (104f), and a mounting layer (105b) fixedly connected to the surface of the filling layer (105a).

7. The ultra-thin flexible bendable light guide plate structure according to claim 6, characterized in that: The filling layer (105a) is supported by ultra-thin glass with a thickness of 10-30μm, and the mounting layer (105b) is made of atomized PET film material.

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