Backlight panel for uniform light

Abstract

The utility model relates to the technical field of backlight plate discloses a backlight plate of uniform light, it includes: board frame, reflector, equalizing light guide plate, lower diffusion plate, prism plate, upper diffusion plate, LED lamp, bottom limiting piece, bottom buckle and flexible circuit board, reflector, equalizing light guide plate, lower diffusion plate, prism plate, upper diffusion plate, LED lamp and flexible circuit board are in board frame, the upper surface of reflector is equipped with equalizing light guide plate, the upper surface of equalizing light guide plate is equipped with lower diffusion plate, equalizing light guide plate side surface sets up LED lamp and flexible circuit board, and LED lamp and flexible circuit board are established between equalizing light guide plate and corresponding board frame, the upper surface of lower diffusion plate is equipped with prism plate, the upper surface of prism plate is equipped with upper diffusion plate, and LED lamp is electrically connected flexible circuit board, and the other end of flexible circuit board is externally connected power supply, and the lower surface of board frame is equipped with bottom buckle and bottom limiting piece. This backlight plate realizes display equalization, improves display brightness, is convenient for installation and dismounting, installs stable and saves material etc.

Description

Technical Field

[0001] This utility model relates to the field of backlight panel technology, specifically to a backlight panel with uniform light. Background Technology

[0002] Traditional backlight displays use a simple planar equalization light guide plate combined with corresponding reflective and diffuser films to achieve the backlight effect. This type of backlight is extremely bright at the source, decreasing in brightness with distance, resulting in poor backlight performance. Over time, significant differences in brightness can occur, rendering only certain areas of the backlight usable and severely impacting its overall performance. Furthermore, backlights are typically fixed to objects with screws, making installation and removal inconvenient, time-consuming, and labor-intensive. The installation is also often unstable, frequently resulting in shifting and wobbling. Additionally, backlights on the market are usually made from a single piece of material, leading to waste of excess material.

[0003] Therefore, existing backlight panels need further improvement to address the above issues. Utility Model Content

[0004] The purpose of this invention is to overcome the problems of uneven display, dim display, inconvenient installation and disassembly, unstable installation, and excessive material waste in existing backlight panels. Through a rational design of the backlight panel, using a frame, reflector, equalization light guide plate, lower diffuser plate, prism plate, upper diffuser plate, LED lights, bottom limiting component, bottom clip, and flexible circuit board, combined with reinforcing ribs and material-saving grooves, it can achieve balanced display, improved brightness, easier installation and disassembly, stable installation, and material and cost savings. The use of a prism plate with mutually perpendicularly arranged prism gratings allows for the refraction and reflection of light from the equalization light guide plate and lower diffuser plate, achieving balanced backlight illumination. The prism surface is trimmed and compensated to further improve light uniformity; a reflector is used to avoid light leakage and greatly enhance light utilization; a flexible circuit board with LEDs allows for convenient routing of the light source, without being constrained by extra hardware circuit boards in the placement and routing of the LEDs; the use of a semi-cylindrical prism on the upper surface and a triangular prism on the lower surface of the equalization light guide plate can better guide the LED light, with the light refracted and reflected at the triangular prism towards the light output direction of the backlight panel, and then diverged at the semi-cylindrical prism, improving the light output uniformity of the backlight panel; a frame with material-saving grooves and reinforcing ribs can save some materials and reduce material costs while meeting load-bearing capacity requirements.

[0005] The specific technical solution of this utility model is as follows:

[0006] A uniform light backlight panel includes: a frame, a reflector, a light guide plate, a lower diffuser, a prism plate, an upper diffuser, an LED, a bottom limiting member, a bottom clip, and a flexible circuit board. The reflector, light guide plate, lower diffuser, prism plate, upper diffuser, LED, and flexible circuit board are all mounted within the frame. The light guide plate is located on the upper surface of the reflector, and the lower diffuser is located on the upper surface of the light guide plate. The LED and flexible circuit board are located on the side surface of the light guide plate, and are positioned between the light guide plate and the corresponding frame. The prism plate is located on the upper surface of the lower diffuser, and the upper diffuser is located on the upper surface of the prism plate. The LED is electrically connected to the flexible circuit board, and the other end of the flexible circuit board is connected to an external power source. The bottom clip and bottom limiting member are located on the lower surface of the frame. The bottom clip is used to engage an external object, and the bottom limiting member is used to stabilize and limit the object.

[0007] Furthermore, the plate frame, bottom limiting member, and bottom buckle are all made of plastic.

[0008] Furthermore, the plate frame, bottom limiting member, and bottom buckle are integrally formed.

[0009] Furthermore, the bottom limiting member includes a limiting post and a limiting pin, both of which are disposed on the lower surface of the plate frame.

[0010] Furthermore, the LED light is selected from surface-mount LED chips.

[0011] Furthermore, the prism plate includes a horizontal grating prism plate and a vertical grating prism plate, wherein the grating axial directions of the horizontal grating prism plate and the vertical grating prism plate are arranged perpendicular to each other.

[0012] Furthermore, the gratings on both the horizontal and vertical grating prism plates are selected as parallel, equally spaced triangular prism gratings.

[0013] Furthermore, the prism plate is selected from PMMA (polymethyl methacrylate) material.

[0014] Furthermore, the upper surface of the equalization light guide plate is provided with a semi-cylindrical prism, and the lower surface of the equalization light guide plate is provided with a triangular prism.

[0015] Furthermore, the equalizing light guide plate, the semi-cylindrical prism, and the triangular prism are integrally formed.

[0016] Furthermore, the equalization light guide plate, the semi-cylindrical prism, and the triangular prism are all made of PMMA material.

[0017] Furthermore, the upper surface of the board frame is provided with a frame baffle, a wiring channel, and a clearance slot. The frame baffle is arranged around the board frame, the wiring channel is located on one side of the frame baffle, and the clearance slot is located on the other side of the frame baffle. The wiring channel is used for wiring of the flexible circuit board and external output, and the clearance slot is used for placing and removing objects within the frame baffle. The frame baffle is used to house the reflector, equalization light guide plate, lower diffuser plate, prism plate, upper diffuser plate, LED light, and flexible circuit board, as well as for housing external protective plates (such as glass plates).

[0018] Furthermore, the plate frame, the frame bracket, the wiring groove, and the clearance groove are integrally formed.

[0019] Furthermore, the bottom buckle is located on the center line of the bottom of the plate frame.

[0020] Furthermore, the limiting post and the limiting pin are respectively disposed on both sides of the bottom buckle.

[0021] Furthermore, the plate frame, reflector, equalizing light guide plate, lower diffuser, prism plate, and upper diffuser are all rectangular in shape.

[0022] Furthermore, the connection between the reflector and the equalizing light guide plate is achieved by adhesive bonding.

[0023] Furthermore, the connection between the lower diffuser plate and the equalization light guide plate is achieved by adhesive bonding.

[0024] Furthermore, the connection between the lower diffuser plate and the prism plate is made by adhesive bonding.

[0025] Furthermore, the connection between the prism plate and the upper diffuser plate is achieved by adhesive bonding.

[0026] Furthermore, the bottom of the plate frame is provided with a material-saving groove, and the material-saving groove is provided with reinforcing ribs.

[0027] Beneficial effects

[0028] This utility model, through the rational design of the backlight panel, employs a frame, reflector, equalization light guide plate, lower diffuser plate, prism plate, upper diffuser plate, LED light, bottom limiting component, bottom buckle, and flexible circuit board, combined with reinforcing ribs and material-saving grooves. This achieves balanced display, improved brightness, facilitates installation and disassembly, ensures stable installation, and saves materials and costs. The use of a prism plate with mutually perpendicularly arranged gratings refracts and reflects light from the equalization light guide plate and lower diffuser plate, achieving balanced backlight illumination. Adjustment and compensation on the prism surface further improve light uniformity. The use of reflection... The backlight panel features a flexible circuit board that prevents light leakage and greatly enhances light utilization. This allows for convenient routing of the light source, eliminating the constraints of redundant hardware circuit boards on LED placement and wiring. The use of a semi-cylindrical prism on the upper surface and a triangular prism on the lower surface of the balanced light guide plate effectively guides the LED light. The light is refracted and reflected at the triangular prism towards the light output direction of the backlight panel, and then diverged at the semi-cylindrical prism, improving the light output uniformity of the backlight panel. The use of a frame with material-saving grooves and reinforcing ribs saves material while maintaining load-bearing capacity, reducing material costs. This backlight panel can be widely used in the display industry. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of a backlight panel for uniform lighting according to the present invention.

[0030] Figure 2 This is a structural schematic diagram of a backlight panel for uniform lighting according to this utility model from another perspective.

[0031] Figure 3 This is an exploded view of the backlight layer structure of a uniform light backlight panel according to the present invention.

[0032] Reference numerals: 01. Frame bracket; 02. Limiting post; 03. Bottom buckle; 04. Limiting pin; 05. Cable routing channel; 06. Clearance channel; 07. Plate frame; 08. Reinforcing rib; 09. Material-saving channel; 11. Upper diffuser plate; 12. Vertical grating prism plate; 13. Horizontal grating prism plate; 14. Lower diffuser plate; 15. Equalizing light guide plate; 16. LED light; 17. Reflector plate. Detailed Implementation

[0033] 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 scope of protection of the present utility model.

[0034] See Figures 1-3 As shown, this utility model provides a uniform light backlight panel, which includes: a frame 07, a reflector 17, a uniform light guide plate 15, a lower diffuser plate 14, a prism plate, an upper diffuser plate 11, LED lights 16, a bottom limiting member, a bottom buckle 03, and a flexible circuit board. The reflector 17, uniform light guide plate 15, lower diffuser plate 14, prism plate, upper diffuser plate 11, LED lights 16, and flexible circuit board are all installed in the frame 07. The upper surface of the reflector 17 is provided with the uniform light guide plate 15, and the upper surface of the uniform light guide plate 15 is provided with the lower diffuser plate 14. The side surface of the uniform light guide plate 15 is provided with LED lights 16 and flexible circuit boards. The plate is positioned between the equalizing light guide plate 15 and the corresponding plate frame 07. A prism plate is provided on the upper surface of the lower diffuser plate 14, and an upper diffuser plate 11 is provided on the upper surface of the prism plate. The LED lamp 16 is electrically connected to the flexible circuit board, and the other end of the flexible circuit board is connected to an external power supply. The lower surface of the plate frame 07 is provided with a bottom buckle 03 and a bottom limiting member. The bottom buckle 03 is used to snap onto an external object, and the bottom limiting member is used to stabilize and limit the object. The plate frame 07, the bottom limiting member, and the bottom buckle 03 are all made of plastic. The plate frame 07, the bottom limiting member, and the bottom buckle 03 are integrally molded. The bottom limiting member includes a limiting post 02 and a limiting pin 04, both of which are located on the lower surface of the plate frame 07.

[0035] Among them, the LED lamp 16 uses surface-mount LED beads;

[0036] The prism plate includes a horizontal grating prism plate 13 and a vertical grating prism plate 12. The grating axes of the horizontal grating prism plate 13 and the vertical grating prism plate 12 are perpendicular to each other. The gratings on the horizontal grating prism plate 13 and the vertical grating prism plate 12 are all selected as parallel and equally spaced triangular prism gratings. The prism plate is made of PMMA (polymethyl methacrylate).

[0037] The light guide plate 15 has a semi-cylindrical prism on its upper surface and a triangular prism on its lower surface. The light guide plate 15, the semi-cylindrical prism, and the triangular prism are integrally formed. The light guide plate 15, the semi-cylindrical prism, and the triangular prism are all made of PMMA material.

[0038] The upper surface of the board frame 07 is provided with a frame baffle 01, a wiring groove 05, and a clearance groove 06. The frame baffle 01 is arranged around the board frame 07, the wiring groove 05 is arranged on one side of the frame baffle 01, and the clearance groove 06 is arranged on the other side of the frame baffle 01. The wiring groove 05 is used for wiring of the flexible circuit board and external output, and the clearance groove 06 is used for picking up and putting in objects in the frame baffle 01. The frame bracket 01 is used to place the reflector 17, the equalizing light guide plate 15, the lower diffuser plate 14, the prism plate, the upper diffuser plate 11, the LED light 16, and the flexible circuit board, as well as to place the external protective plate (such as a glass plate); the plate frame 07, the frame bracket 01, the wiring groove 05, and the clearance groove 06 are integrally formed; the bottom buckle 03 is set on the center line of the bottom of the plate frame 07; the limiting post 02 and the limiting pin 04 are respectively set on both sides of the bottom buckle 03; the bottom of the plate frame 07 is provided with a material-saving groove 09, and the material-saving groove 09 is provided with a reinforcing rib 08;

[0039] Among them, the plate frame 07, reflector 17, equalization light guide plate 15, lower diffuser 14, prism plate and upper diffuser 11 are all rectangular;

[0040] Specifically, the connection between the reflector 17 and the equalizing light guide plate 15 is made by adhesive; the connection between the lower diffuser 14 and the equalizing light guide plate 15 is made by adhesive; the connection between the lower diffuser 14 and the prism plate is made by adhesive; and the connection between the prism plate and the upper diffuser 11 is made by adhesive.

[0041] The specific implementation principle of this utility model is as follows: Using PC (polycarbonate) material, the backlight panel main frame is injection molded into a mold containing a plate frame, bottom limiting components (including limiting posts and pins), bottom buckles, frame brackets, wiring channels, clearance channels, material-saving channels, and reinforcing ribs using an injection molding machine. A flexible circuit board with an LED light is then glued to one corner of the backlight panel main frame using 3M adhesive. The flexible circuit board is then routed to the wiring channel and output externally. A reflector is then glued to the backlight panel main frame surface (excluding the LED light board). A light guide plate is glued to the upper surface of the reflector. A lower diffuser plate is glued to the light guide plate. Horizontal grating prism plates are glued to the lower diffuser plate, the LED light, and the flexible circuit board. Vertical grating prism plates are glued to the horizontal grating prism plates. An upper diffuser plate is glued to the vertical grating prism plates. Black tape is glued around the edges of the upper diffuser plate to prevent light leakage from the edges. Finally, an acrylic sheet is glued to the upper diffuser plate for protection.

[0042] 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 backlight panel for uniform light distribution, characterized in that, The uniform light backlight panel includes: a frame, a reflector, a light guide plate, a lower diffuser, a prism plate, an upper diffuser, LEDs, a bottom limiting component, a bottom clip, and a flexible circuit board. The reflector, light guide plate, lower diffuser, prism plate, upper diffuser, LEDs, and flexible circuit board are all mounted within the frame. The light guide plate is located on the upper surface of the reflector, and the lower diffuser is located on the upper surface of the light guide plate. The LEDs and flexible circuit board are located on the side surface of the light guide plate, and are positioned between the light guide plate and the corresponding frame. The prism plate is located on the upper surface of the lower diffuser, and the upper diffuser is located on the upper surface of the prism plate. The LEDs are electrically connected to the flexible circuit board, and the other end of the flexible circuit board is connected to an external power source. The bottom clip and bottom limiting component are located on the lower surface of the frame. The bottom clip is used to engage external objects, and the bottom limiting component is used to stabilize and limit the light on the external objects.

2. The backlight panel for uniform lighting according to claim 1, characterized in that, The plate frame, bottom limiting component, and bottom buckle are all made of plastic.

3. A backlight panel for uniform lighting according to claim 2, characterized in that, The plate frame, bottom limiting component, and bottom buckle are integrally formed.

4. A backlight panel for uniform lighting according to claim 1, characterized in that, The bottom limiting component includes a limiting post and a limiting pin, both of which are disposed on the lower surface of the plate frame.

5. A backlight panel for uniform lighting according to claim 1, characterized in that, The LED light uses surface-mount LED chips.

6. A backlight panel for uniform lighting according to claim 1, characterized in that, The prism plate includes a horizontal grating prism plate and a vertical grating prism plate, and the grating axial directions of the horizontal grating prism plate and the vertical grating prism plate are arranged perpendicular to each other.

7. A backlight panel for uniform lighting according to claim 6, characterized in that, The gratings on both the horizontal and vertical grating prism plates are selected as parallel, equally spaced triangular prism gratings.

8. A backlight panel for uniform lighting according to claim 7, characterized in that, The prism plate is made of PMMA material.

9. A backlight panel for uniform lighting according to claim 1, characterized in that, The upper surface of the equalization light guide plate is provided with a semi-cylindrical prism, and the lower surface of the equalization light guide plate is provided with a triangular prism.

10. A backlight panel for uniform lighting according to claim 9, characterized in that, The equalization light guide plate, the semi-cylindrical prism, and the triangular prism are integrally formed.

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