Y-shaped backlight source
By designing a Y-shaped backlight structure and optimizing the reflection and refraction paths of light, the problem of uneven light distribution in traditional light guide plates was solved, resulting in higher brightness output and light utilization.
Patent Information
- Application Number
- CN202520546009.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-26
AI Technical Summary
Traditional light guide plate designs result in uneven light distribution, with high brightness near the light source and low brightness further away.
The Y-shaped backlight structure includes an upper acrylic cover plate, a light-emitting component, and first and second light guide components. By optimizing the reflection and refraction path of light, the Y-shaped light guide plate design guides the propagation of light, thereby improving light utilization and brightness uniformity.
It achieves efficient light propagation and uniform distribution, improves brightness output, reduces light loss, and enhances the display effect of display devices.
Smart Images
Figure CN223870851U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of backlight technology, specifically a Y-type backlight. Background Technology
[0002] A backlight is a component that provides uniform backlight to a display device. It is generally divided into two main categories: side backlights and bottom backlights. Side backlights place the light source on the side of the display panel and use a light guide plate to transmit the light evenly to the display panel. They have a thinner appearance and lower power consumption. Bottom backlights illuminate objects from below, highlighting their contours and shapes, and are suitable for generating high-contrast images.
[0003] The shape and structure of the light guide plate play a crucial role in the propagation and distribution of light. Traditional light guide plate designs typically employ a planar structure with scattering dots at the bottom to guide the light to distribute evenly. However, this design has some limitations, mainly manifested in uneven light distribution, particularly with higher brightness in areas near the light source and lower brightness in areas far from the light source. Therefore, a Y-shaped backlight is proposed to address these issues. Utility Model Content
[0004] The purpose of this invention is to provide a Y-shaped backlight to solve the problem that traditional light guide plate designs usually adopt a planar structure with scattering dots at the bottom to guide the uniform distribution of light, but the distribution is uneven, especially with higher brightness in areas close to the light source and lower brightness in areas far from the light source.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A Y-shaped backlight includes an upper acrylic cover plate and a light-emitting component. The bottom end of the upper acrylic cover plate is fixedly connected to the light-emitting component by adhesive, and the bottom end of the light-emitting component is fixedly connected to a lower acrylic cover plate by adhesive. A first light guide component is fixedly connected to the inner side of the light-emitting component by adhesive. The light-emitting component includes an acrylic shell with a light-emitting port at its right end and a Y-shaped mounting groove on its inner side. The top end of the lower acrylic cover plate is fixedly connected to the bottom end of the acrylic inner shell. The first light guide component includes a polycarbonate layer with adhesive acrylic fixedly connected to one side and a polyurethane resin layer fixedly connected to the other side. A diffuser is formed on the inner side of the adhesive acrylic, and a convex lens is fixedly connected to the inner side of the diffuser. The inner side of the Y-shaped mounting groove on the acrylic shell is fixedly connected to the side of the polycarbonate layer away from the adhesive acrylic.
[0007] As a further optimization of this utility model, the bottom end of the upper acrylic cover plate is fixedly connected to the top end of the acrylic shell, the bottom end of the acrylic shell is fixedly connected to the top end of the lower acrylic cover plate, and the projections of the upper acrylic cover plate, the acrylic shell, and the lower acrylic cover plate overlap.
[0008] As a further optimization of this utility model, the following features are provided: the light-emitting opening penetrates the right end of the acrylic shell; the Y-shaped mounting groove penetrates the inner side of the acrylic shell vertically; the Y-shaped mounting groove communicates with the light-emitting opening; and the cross-section of the left side of the acrylic shell is circular.
[0009] As a further optimization of this utility model, the diffuser opening is shaped like a flared mouth, the diameter of the diffuser opening near the acrylic shell is larger than the diameter near the polyurethane resin layer, the number of diffusers is multiple, and the diffusers are close to each other.
[0010] As a further optimization of this utility model, the top end of the acrylic inner shell is fixedly connected to the bottom end of the upper acrylic cover plate, the right end of the acrylic inner shell has an angle of ninety degrees, and the acrylic inner shell is embedded inside the acrylic outer shell.
[0011] As a further optimization of this utility model, the second light guide component is fixedly connected to the outer side of the acrylic inner shell. The structural layer of the second light guide component is the same as that of the first light guide component, and the angle of the right end of the second light guide component is ninety degrees.
[0012] As a further optimization of this utility model, the first light guide component is sleeved on the outside of the second light guide component, a gap is provided between the second light guide component and the first light guide component, and a notch is provided at the right end of the first light guide component.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] In this invention, through the arrangement of the light-emitting component, the first light-guiding component, and the second light-guiding component, the device can more effectively guide the propagation direction of light through the Y-shaped light guide plate with its unique structural design, reducing the loss of light during propagation. This design can improve the light utilization rate. In particular, in the side-entry light guide plate, by optimizing the reflection and refraction path of light, higher brightness output can be achieved. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the light-emitting component structure of this utility model;
[0017] Figure 3This utility model Figure 2 A schematic diagram of the structure at point A;
[0018] Figure 4 This utility model Figure 2 A schematic diagram of the structure at point B;
[0019] Figure 5 This is a cross-sectional structural diagram of the adhesive acrylic of this utility model;
[0020] Figure 6 This utility model Figure 5 A schematic diagram of the structure at point C.
[0021] In the picture: 1. Upper acrylic cover plate;
[0022] 2. Light-emitting component; 21. Acrylic housing; 22. Light-emitting port; 23. Y-shaped mounting slot; 24. Acrylic inner housing;
[0023] 3. Lower acrylic cover plate;
[0024] 4. First light guide assembly; 41. Polycarbonate layer; 42. Adhesive acrylic; 43. Polyurethane resin layer; 44. Diffuser; 45. Convex lens;
[0025] 5. Second light guide component. Detailed Implementation
[0026] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0028] Please see Figure 1-6 This utility model provides a technical solution:
[0029] A Y-shaped backlight includes an upper acrylic cover plate 1 and a light-emitting component 2. The bottom end of the upper acrylic cover plate 1 is glued to the light-emitting component 2, and the bottom end of the light-emitting component 2 is glued to the lower acrylic cover plate 3. A first light guide component 4 is glued to the inner side of the light-emitting component 2. The light-emitting component 2 includes an acrylic shell 21, with a light-emitting opening 22 at the right end of the acrylic shell 21 and a Y-shaped mounting groove 23 on the inner side of the acrylic shell 21. The top end of the lower acrylic cover plate 3 is connected to the acrylic cover plate 21. The bottom of the inner shell 24 is fixedly connected. The first light guide component 4 includes a polycarbonate layer 41. An adhesive acrylic 42 is fixedly connected to one side of the polycarbonate layer 41. A polyurethane resin layer 43 is fixedly connected to one side of the adhesive acrylic 42. A diffuser 44 is opened on the inner side of the adhesive acrylic 42. A convex lens 45 is fixedly connected to the inner side of the diffuser 44 opened on the adhesive acrylic 42. The inner side of the Y-shaped mounting groove 23 opened on the acrylic shell 21 is fixedly connected to the side of the polycarbonate layer 41 away from the adhesive acrylic 42.
[0030] As a further implementation of this solution, the bottom end of the upper acrylic cover plate 1 is fixedly connected to the top end of the acrylic shell 21, and the bottom end of the acrylic shell 21 is fixedly connected to the top end of the lower acrylic cover plate 3. The upper acrylic cover plate 1, the acrylic shell 21, and the lower acrylic cover plate 3 are projected to overlap. With the above arrangement, the structure is compact, the stability is high, the overall installation and maintenance are convenient, and the overall aesthetics of the device are improved.
[0031] As a further implementation of this solution, the light-emitting port 22 penetrates the right end of the acrylic shell 21, and the Y-shaped mounting groove 23 penetrates the inner side of the acrylic shell 21 vertically. The Y-shaped mounting groove 23 is connected to the light-emitting port 22. The cross-section of the left side of the acrylic shell 21 is a circular structure. Through the above settings, the installation position of the light source is optimized to ensure that the light is uniformly introduced into the second light guide component 5 and improve the light efficiency.
[0032] As a further implementation of this solution, the diffuser 44 is shaped like a horn, and the diameter of the diffuser 44 near the acrylic shell 21 is larger than the diameter near the polyurethane resin layer 43. There are multiple diffusers 44, and the diffusers 44 are close to each other. Through the above arrangement, the horn-shaped diffuser 44 can expand the light receiving range, enhance the light collection efficiency, and improve the brightness uniformity of the light guide plate.
[0033] As a further implementation of this solution, the top of the acrylic inner shell 24 is fixedly connected to the bottom of the upper acrylic cover plate 1. The right end of the acrylic inner shell 24 has an angle of 90 degrees. The acrylic inner shell 24 is embedded inside the acrylic outer shell 21. The outer side of the acrylic inner shell 24 is fixedly connected to the second light guide component 5. The structural layer of the second light guide component 5 is the same as that of the first light guide component 4. The right end of the second light guide component 5 has an angle of 90 degrees. Through the above settings, the light is efficiently introduced, the light loss is reduced, the brightness is improved, and the light is efficiently reflected between the first light guide component 4 and the second light guide component 5, reducing the brightness attenuation.
[0034] As a further implementation of this solution, the first light guide component 4 is sleeved on the outside of the second light guide component 5, and a gap is provided between the second light guide component 5 and the first light guide component 4. A notch is provided at the right end of the first light guide component 4. With the above arrangement, the light emitted by the light source structure can be directed to the polyurethane resin layer 43 on the second light guide component 5 to achieve the effect of reflection.
[0035] Workflow: During installation, firstly, the second light guide component 5 is glued and fixed to the acrylic inner shell 24. Then, the acrylic outer shell 21 is fixed to the first light guide component 4. During fixing, the side of the adhesive acrylic 42 is fixed to the inside of the acrylic outer shell 21, and the outside of the second light guide component 5 is fixed to the side of the adhesive acrylic 42. The diffuser 44 on the acrylic inner shell 24 is opposite in direction to the acrylic inner shell 24 on the acrylic outer shell 21. At the same time, a notch is left at the right end of the polycarbonate layer 41, the adhesive acrylic 42, and the polyurethane resin layer 43. Then, the bottom end of the upper acrylic cover plate 1 is glued and fixed to the top ends of the acrylic outer shell 21, the acrylic inner shell 24, the first light guide component 4, and the second light guide component 5. The bottom ends of the acrylic outer shell 21, the acrylic inner shell 24, the first light guide component 4, and the second light guide component 5 are glued and fixed to the top end of the lower acrylic cover plate 3. The installation is then completed.
[0036] In use, the light source structure is installed inside the light-emitting port 22, aligning the light source structure with the right end of the second light guide component 5. When the light source structure emits light, it shines from the notch at the right end of the first light guide component 4 onto the right end of the second light guide component 5. Due to the structural design of the right end of the second light guide component 5, the polyurethane resin layer 43 of the second light guide component 5 reflects the light, directing it onto the polyurethane resin layer 43 of the first light guide component 4. At this time, the polyurethane resin layers 43 of the second light guide component 5 and the first light guide component 4 reflect each other, causing the light to... The polyurethane resin layer 43, which is made of polyurethane resin and has a refractive index of 1.60~1.74, is distributed throughout the interior of the light-emitting component 2. It has high light transmittance. The light transmitted through the polyurethane resin layer 43 passes through the diffuser 44 and then through the convex lens 45, which diffuses the distribution range of the light. The diffused light shines on the polycarbonate layer 41 and is uniformly transmitted through the polycarbonate layer 41. The polycarbonate layer 41 is made of polycarbonate and has a light transmittance of over 90%, with good optical uniformity, as well as high impact resistance and heat resistance.
[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A Y-shaped backlight, comprising an upper acrylic cover plate (1) and a light-emitting component (2), characterized in that: The bottom end of the upper acrylic cover plate (1) is fixedly connected to a light-emitting component (2) by adhesive. The bottom end of the light-emitting component (2) is fixedly connected to a lower acrylic cover plate (3) by adhesive. The inner side of the light-emitting component (2) is fixedly connected to a first light guide component (4) by adhesive. The light-emitting component (2) includes an acrylic shell (21). A light-emitting port (22) is opened at the right end of the acrylic shell (21). A Y-shaped mounting groove (23) is opened on the inner side of the acrylic shell (21). The top end of the lower acrylic cover plate (3) is fixedly connected to the bottom end of the acrylic inner shell (24). The first light guide component (4) includes a polycarbonate layer (41), an adhesive acrylic (42) is fixedly connected to one side of the polycarbonate layer (41), a polyurethane resin layer (43) is fixedly connected to one side of the adhesive acrylic (42), a diffuser (44) is opened on the inner side of the adhesive acrylic (42), a convex lens (45) is fixedly connected to the inner side of the diffuser (44) opened on the adhesive acrylic (42), and the inner side of the Y-shaped mounting groove (23) opened on the acrylic shell (21) is fixedly connected to the side of the polycarbonate layer (41) away from the adhesive acrylic (42).
2. A Y-type backlight according to claim 1, characterized in that: The bottom end of the upper acrylic cover plate (1) is fixedly connected to the top end of the acrylic shell (21), and the bottom end of the acrylic shell (21) is fixedly connected to the top end of the lower acrylic cover plate (3). The projections of the upper acrylic cover plate (1), the acrylic shell (21), and the lower acrylic cover plate (3) overlap.
3. A Y-type backlight according to claim 1, characterized in that: The light-emitting port (22) penetrates the right end of the acrylic shell (21), the Y-shaped mounting groove (23) penetrates the inner side of the acrylic shell (21) vertically, the Y-shaped mounting groove (23) is connected to the light-emitting port (22), and the cross-section of the left side of the acrylic shell (21) is circular.
4. A Y-type backlight according to claim 1, characterized in that: The diffuser (44) is shaped like a flared mouth. The diameter of the diffuser (44) near the acrylic shell (21) is larger than the diameter near the polyurethane resin layer (43). There are multiple diffusers (44), and the diffusers (44) are close to each other.
5. A Y-type backlight according to claim 1, characterized in that: The top of the acrylic inner shell (24) is fixedly connected to the bottom of the upper acrylic cover plate (1), the right end of the acrylic inner shell (24) is at an angle of 90 degrees, and the acrylic inner shell (24) is embedded in the interior of the acrylic outer shell (21).
6. A Y-type backlight according to claim 1, characterized in that: The second light guide component (5) is fixedly connected to the outer side of the acrylic inner shell (24). The structural layer of the second light guide component (5) is the same as that of the first light guide component (4). The angle of the right end of the second light guide component (5) is ninety degrees.
7. A Y-type backlight according to claim 1, characterized in that: The first light guide component (4) is sleeved on the outside of the second light guide component (5), and there is a gap between the second light guide component (5) and the first light guide component (4). A notch is provided at the right end of the first light guide component (4).