High-brightness structural film and LCD (Liquid Crystal Display) backlight module

Abstract

The utility model discloses a highlight structural film and LCD backlight module, specifically relates to highlight structural film technical field, including PET film layer, the bottom of PET film layer is fixed with a plurality of prism structures, the plurality of prism structures are distributed in linear array at the bottom of PET film layer, the top of PET film layer is provided with a brightening structure, the brightening structure includes a plurality of brightening blocks, and the brightening blocks are arranged on the bottom of PET film layer. The multiple brightening blocks are distributed on the top of the PET film layer in a linear array mode, and the brightening blocks are all arranged to be in a rectangular pyramid shape or a hexagonal pyramid shape. According to the utility model, the plurality of rectangular pyramid-shaped or hexagonal pyramid-shaped brightening blocks are arranged at the top of the PET film layer, the rectangular pyramid-shaped brightening blocks are matched with the plurality of prism structures, the brightening performance is high, the hexagonal pyramid-shaped brightening blocks are matched with the plurality of prism structures, and the hexagonal pyramid-shaped brightening blocks have multiple light receiving surfaces, so that not only can the brightening effect be achieved, but also the brightness of the light receiving surfaces can be improved. And the light receiving performance can be improved, so that the viewing angle is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of high-brightness structural films, and more specifically to a high-brightness structural film and an LCD backlight module. Background Art

[0002] The LCD backlight module is one of the key components of the liquid crystal display panel. It is the light source component located behind the liquid crystal display (LCD). Its function is to provide sufficient brightness and evenly distributed light so that the LCD can display images normally. The following is a detailed introduction to the LCD backlight module. The LCD backlight module is generally composed of a light source, a light-transmitting module, a reflective module, optical sheets, and a circuit board. The optical sheets include light-enhancing films and diffusion films. The light-enhancing films can increase the brightness and output angle of light, making the display brighter. The diffusion films are used to distribute light more evenly, reduce the appearance of bright spots and dark spots, improve the display effect, and thus make the LCD display clearer.

[0003] Existing brightness enhancement films usually use inverse prism structure films. For example, the prior art publication number CN220305511U is an inverse prism composite brightness enhancement film and a liquid crystal display backlight module. The inverse prism composite brightness enhancement film includes a transparent film substrate layer, and the light-emitting surface and the light-incident surface of the transparent film substrate layer are respectively provided with an atomized focusing layer and a reverse focusing brightening layer. The atomized focusing layer includes a plurality of concave four-sided pyramid structures arranged in an array.

[0004] However, the above-mentioned existing technology still has the following problems when used: since the structural diffusion film itself has a prism structure on the upper and lower surfaces, there is a technical difference from the conventional diffusion film. The conventional diffusion film only has the function of scattering light. When it is matched with the upper and lower light-enhancing sheets, there is no angle difference, resulting in a very small brightness variation range, a small light-collecting surface, and an uneven viewing angle. Based on this, the utility model provides a high-brightness structural film and an LCD backlight module. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a high-brightness structural film and an LCD backlight module, by arranging a plurality of pyramid-shaped brightening blocks on the top of the PET film layer. The quadrangular pyramid-shaped brightening blocks are combined with a plurality of prism structures to have high brightening performance. The hexagonal pyramid-shaped brightening blocks are combined with a plurality of prism structures. Since the hexagonal pyramid-shaped brightening blocks have more light-collecting surfaces, they can not only play a brightening role, but also improve the light-collecting performance and make the viewing angle more uniform, so as to solve the problems arising from the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a high-brightness structural film, comprising a PET film layer, a plurality of prism structures fixedly provided at the bottom of the PET film layer, the plurality of prism structures being distributed in a linear array at the bottom of the PET film layer, a brightening structure being provided at the top of the PET film layer, the brightening structure comprising a plurality of brightening blocks, the plurality of brightening blocks being distributed in a linear array at the top of the PET film layer, the brightening blocks being all arranged in a pyramid shape to form a pyramid structure, and having a high brightening effect.

[0007] In a preferred embodiment, when the brightness enhancement block is configured as a quadrangular pyramid, and the quadrangular pyramid brightness enhancement block is concave downward on the top surface of the PET film layer, the quadrangular pyramid brightness enhancement block forms a concave pyramid structure, which has a good brightening effect.

[0008] In a preferred embodiment, a quadrangular pyramid-shaped groove is formed on the top of the PET film layer by hot pressing, and a plurality of quadrangular pyramid-shaped brightness enhancement blocks are respectively arranged in the plurality of grooves for placing the quadrangular pyramid-shaped brightness enhancement blocks.

[0009] In a preferred embodiment, the angle of each quadrangular pyramid-shaped brightness enhancement block is 45°, and the angle of each prism structure is 90°, which can improve the focusing effect of the brightness enhancement block and thus improve the brightness enhancement performance.

[0010] In a preferred embodiment, when the brightness enhancement block is configured as a hexagonal pyramid, and the hexagonal pyramid-shaped brightness enhancement block is upwardly convex on the top surface of the PET film layer, the hexagonal pyramid-shaped brightness enhancement block has a better brightening effect and can be used.

[0011] The present invention also includes an LCD backlight module, which includes an outer frame and a backlight source. The outer frame is provided with a liquid crystal panel, an upper light-enhancing sheet, a lower light-enhancing sheet, a light guide plate and a reflective sheet distributed in sequence from top to bottom. The backlight source is provided inside the outer frame and on one side of the light guide plate and the reflective sheet. The above-mentioned high-brightness structural film is provided between the light guide plate and the lower light-enhancing sheet. The use of the high-brightness structural film can greatly improve the brightness of the liquid crystal panel, allowing users to observe the information on the liquid crystal panel more clearly.

[0012] Technical effects and advantages of this utility model:

[0013] 1. The utility model sets a plurality of quadrangular pyramid or hexagonal pyramid-shaped brightness enhancement blocks on the top of the PET film layer:

[0014] The quadrangular pyramid-shaped brightness enhancement block is combined with multiple prism structures to achieve high brightness enhancement performance;

[0015] The hexagonal pyramid-shaped brightening block is combined with multiple prism structures. Since the hexagonal pyramid-shaped brightening block has more light-collecting surfaces, it can not only increase brightness, but also improve light-collecting performance and make the viewing angle more uniform.

[0016] 2. The utility model installs the high-brightness structural film between the lower brightening sheet and the light guide plate, utilizing the brightening performance of the high-brightness structural film. At the same time, the upper and lower brightening sheets can also play a brightening role, thereby greatly improving the brightness of the liquid crystal panel, allowing users to observe the information on the liquid crystal panel more clearly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of the second embodiment of the present utility model;

[0019] Figure 3 This is a cross-sectional view of the LCD backlight module structure;

[0020] Figure 4 This is a cross-sectional view of the LCD backlight module structure.

[0021] The accompanying drawings are marked as follows: 1, PET film layer; 2, prism structure; 3, brightness enhancement structure; 4, outer frame; 5, backlight source; 6, liquid crystal panel; 7, upper brightness enhancement sheet; 8, lower brightness enhancement sheet; 9, light guide plate; 10, reflective sheet;

[0022] 301. Brightening block; 302. Groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] Refer to the instruction manual Figure 1 The present invention provides a high-brightness structure film, comprising a PET film layer 1, wherein a plurality of prism structures 2 are fixedly provided at the bottom of the PET film layer 1, wherein the plurality of prism structures 2 are distributed in a linear array at the bottom of the PET film layer 1, and a brightness enhancement structure 3 is provided on the top of the PET film layer 1, wherein the brightness enhancement structure 3 comprises a plurality of brightness enhancement blocks 301, wherein the plurality of brightness enhancement blocks 301 are distributed in a linear array at the top of the PET film layer 1, and each brightness enhancement block 301 is configured in a quadrangular pyramid shape, and the quadrangular pyramid-shaped brightness enhancement block 301 is concave downward on the top surface of the PET film layer 1, and the quadrangular pyramid-shaped brightness enhancement block 301 forms a concave pyramid structure, which has a good brightening effect;

[0026] A quadrangular pyramid-shaped groove 302 is formed by hot pressing on the top of the PET film layer 1. A plurality of quadrangular pyramid-shaped brightening blocks 301 are respectively arranged in the plurality of grooves 302 for placing the quadrangular pyramid-shaped brightening blocks 301. The angle of each quadrangular pyramid-shaped brightening block 301 is 45°, and the angle of each prism structure 2 is 90°, which can improve the focusing effect of the brightening block 301 and thus improve the brightening performance.

[0027] By arranging pyramidal brightening blocks 301 in multiple grooves 302 on the top of the PET film layer 1, specifically, when the pyramidal brightening blocks 301 are in the shape of a quadrangular pyramid, it can also be called a pyramid structure, and the brightening blocks 301 are concave downward. Multiple brightening blocks 301, the PET film layer 1 and the multiple prism structures 2 constitute a high-brightness structural film. The bottom of the quadrangular pyramidal brightening block 301 is a square structure with a side length designed to be 21u-40u and a height of 1 / 2 of the side length. The angle of the brightening block 301 is 90°, and the refractive index of the glue used is greater than 1.62. At the same time, the angle of the brightening block 301 and the angle of the prism are 45° and 90°, respectively, so as to achieve a brightening effect.

[0028] Example 2

[0029] The difference from the first embodiment is that, referring to the attached Figure 2 When the brightening block 301 is set to a hexagonal pyramid shape, and the hexagonal pyramid brightening block 301 is upwardly convex on the top surface of the PET film layer 1, the hexagonal pyramid brightening block 301 has a better brightening effect, so it can be used.

[0030] The brightening block 301 set on the top of the PET film layer 1 is in the shape of a hexagonal pyramid, and the hexagonal brightening block 301 is raised upward. The high-brightness structural film composed of the brightening block 301, the PET film layer 1 and multiple prism structures 2 receives light in directions of 0°, 30°, 60°, and 90° under ideal conditions. Light in all directions is gathered, the center brightness is high, and the luminous viewing angle is uniform in all directions. Under non-ideal conditions, it receives light at 0°, 10°, 40°, and 90°. There is repeated light collection at 0° and 10°, but at the same time, more light is collected in the direction of 40°. Therefore, no matter how the upper and lower light-enhancing angles are turned, this structure has a relatively large light-collecting ability, and thus the brightness of this high-brightness structural film does not decrease. Inconsistent brightness gain ratios may occur under different angle matching. At the same time, since there are more light-collecting directions, the viewing angle will be more uniform.

[0031] Refer to the instruction manual Figure 3-4The present invention provides an LCD backlight module, including an outer frame 4 and a backlight source 5. The outer frame 4 is provided with a liquid crystal panel 6, an upper brightness enhancement sheet 7, a lower brightness enhancement sheet 8, a light guide plate 9 and a reflective sheet 10, which are distributed from top to bottom. The backlight source 5 is arranged inside the outer frame 4, and the backlight source 5 is arranged on one side of the light guide plate 9 and the reflective sheet 10. The high-brightness structure film in embodiment 1 or embodiment 2 is provided between the light guide plate 9 and the lower brightness enhancement sheet 8.

[0032] The highlight structure film is installed between the light guide plate 9 and the lower brightening sheet 8. The light emitted by the backlight source 5 passes through the light guide plate 9, the highlight structure film, the lower brightening sheet 8 and the upper brightening sheet 7. The light is emitted through the light guide plate 9. Whether it passes through the quadrangular pyramid-shaped brightening block 301 or the hexagonal pyramid-shaped brightening block 301, it will continuously refract and reflect the concentrated light, thereby improving the light transmission effect. Moreover, when the light emitted by the highlight structure film passes through the lower brightening sheet 8 and the upper brightening sheet 7, the upper brightening sheet 7 and the lower brightening sheet 8 can again have a brightening effect, thereby greatly improving the brightness of the liquid crystal panel 6, so that the user can observe the information of the liquid crystal panel 6 more clearly. Compared with the traditional LCD backlight module, the LCD backlight module can increase the light brightness by relying on its own highlight structure film, without excessively adjusting the output power of the LCD backlight module, thereby reducing the cost of use.

[0033] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-brightness structural film, characterized by: It comprises a PET film layer (1), wherein a plurality of prism structures (2) are fixedly provided at the bottom of the PET film layer (1), and the plurality of prism structures (2) are distributed in a linear array at the bottom of the PET film layer (1); A brightness enhancement structure (3) is provided on the top of the PET film layer (1), wherein the brightness enhancement structure (3) comprises a plurality of brightness enhancement blocks (301), and the plurality of brightness enhancement blocks (301) are distributed in a linear array on the top of the PET film layer (1); The brightness enhancement block (301) is configured in a quadrangular pyramid shape or a hexagonal pyramid shape.

2. The high-brightness structured film according to claim 1, characterized in that: When the brightness enhancement block (301) is configured in a quadrangular pyramid shape, the quadrangular pyramid-shaped brightness enhancement block (301) is concave downward on the top surface of the PET film layer (1).

3. The high-brightness structured film according to claim 2, characterized in that: A quadrangular pyramid-shaped groove (302) is formed on the top of the PET film layer (1) by hot pressing, and a plurality of quadrangular pyramid-shaped brightness enhancement blocks (301) are respectively arranged in the plurality of grooves (302).

4. The high-brightness structured film according to claim 2, characterized in that: The angle of each quadrangular pyramid-shaped brightness enhancement block (301) is 45 degrees, and the angle of each prism structure (2) is 90 degrees.

5. The high-brightness structured film according to claim 1, characterized in that: When the brightness enhancement block (301) is configured in a hexagonal pyramid shape, the hexagonal pyramid-shaped brightness enhancement block (301) is convex upward on the top surface of the PET film layer (1).

6. An LCD backlight module, characterized in that: The invention comprises an outer frame (4) and a backlight source (5); a liquid crystal panel (6), an upper light-enhancing sheet (7), a lower light-enhancing sheet (8), a light guide plate (9) and a reflective sheet (10) are arranged in sequence from top to bottom in the outer frame (4); the backlight source (5) is arranged inside the outer frame (4), and the backlight source (5) is arranged on one side of the light guide plate (9) and the reflective sheet (10); and a high-brightness structure film according to any one of claims 1 to 5 is arranged between the light guide plate (9) and the lower light-enhancing sheet (8).

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