Framework for eliminating lamp shadow of miniled light mixing distance glass diffusion plate

Abstract

The utility model belongs to the technical field of glass diffusion plates, and particularly relates to a framework for eliminating lamp shadows through a miniled light mixing distance glass diffusion plate, which comprises an LED lamp panel and a plurality of miniled lamp beads arranged on the LED lamp panel. Glass substrates are arranged on the side, located on the mini LED lamp beads, of the LED lamp panel at intervals, the glass substrates and the LED lamp panel are arranged in parallel, light uniformizing films are arranged on the sides, away from the LED lamp panel, of the glass substrates at intervals, and QD films are arranged on the sides, away from the glass substrates, of the light uniformizing films. An optical increment film is arranged on one side, far away from the dodging film, of the QD film; first shielding net points are arranged on the side, facing the LED lamp panel, of the glass substrate, and the first shielding net points and the mini LED lamp beads are correspondingly arranged. The structure for eliminating the lamp shadow through the miniled light mixing distance glass diffusion plate has the effects that the brightness of the lamp bead positions is reduced, the lamp shadow is shielded, and the brightness of the lamp bead gap positions is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of glass diffusion plates, and specifically relates to a structure of a miniLED mixed light distance glass diffusion plate for eliminating lamp shadows. Background Art

[0002] In direct-type backlights, a certain light mixing distance must be left between the LED lamp beads and the light-evening component, the diffuser plate. The larger the light mixing distance, the more dispersed the light emitted by the LED lamp beads will be when it reaches the diffuser plate, the easier it will be to block the light shadow, and the better the light-evening effect of the diffuser plate. However, a large light mixing distance will increase the thickness of the backlight module, causing the thickness of the entire display to increase, occupying space and having poor aesthetics. Miniled direct-type backlight modules usually require high brightness, high color gamut, high optical picture, and the entire machine is thin and beautiful. In order to achieve the purpose of thinning, the light mixing distance between the diffuser plate and the miniled lamp beads needs to be greatly reduced. However, the smaller the light mixing distance, the more difficult it will be to cover the light shadow, and the brightness uniformity of the backlight module will be greatly reduced, seriously affecting the optical and picture effects of the display product. Utility Model Content

[0003] The purpose of the utility model is to provide a structure for eliminating lamp shadows through a glass diffusion plate at a miniLED mixing light distance, so as to solve the technical problem that the smaller the mixing light distance is, the more difficult it is to cover the lamp shadow, and the brightness uniformity of the backlight module is greatly reduced, which seriously affects the optical and picture effects of the display product. The utility model can achieve the effect of reducing the brightness of the lamp bead position, shielding the lamp shadow, and increasing the brightness of the lamp bead gap position. Shielding patterns are set on both sides, which can reduce the mixing light distance to within 0-2mm.

[0004] In order to solve the above technical problems, the utility model provides a structure for eliminating lamp shadows by using a mini-LED mixed light distance glass diffusion plate, including:

[0005] An LED light board and a plurality of mini-LED lamp beads arranged on the LED light board;

[0006] A glass substrate is arranged at a distance from the LED light board on one side of the miniled lamp bead, the glass substrate and the LED light board are arranged in parallel, a light-homogenizing film is arranged at a distance from the glass substrate on the side away from the LED light board, a QD film is arranged at a side of the light-homogenizing film away from the glass substrate, and an optical incremental film is arranged at a side of the QD film away from the light-homogenizing film;

[0007] The glass substrate is provided with a first shielding grid point on a side facing the LED light board, and the first shielding grid point and the miniled lamp bead are provided correspondingly;

[0008] A plurality of first light extraction points are arranged on the side of the glass substrate facing the LED light board.

[0009] Furthermore, the first light extraction points are evenly distributed on the glass substrate.

[0010] Furthermore, the diameter of the first shielding dots is 20% greater than the diameter of the miniled lamp beads;

[0011] The thickness of the first shielding dots is 18-20 microns.

[0012] Furthermore, a second shielding grid point is arranged on a side of the glass substrate away from the LED light board, and the second shielding grid point and the miniled lamp bead are arranged correspondingly;

[0013] A plurality of second light extraction points are arranged on a side of the glass substrate away from the LED light board.

[0014] Furthermore, the diameter of the second shielding dots is 40% greater than the diameter of the miniled lamp beads;

[0015] The thickness of the second shielding dots is 10-12 microns.

[0016] Furthermore, the density of the first light extraction points gradually increases in a direction away from the miniled lamp bead.

[0017] Furthermore, the density of the first light extraction dots is 45% at the maximum and 15% at the minimum.

[0018] Furthermore, the density of the second light extraction points gradually increases in a direction away from the miniled lamp bead.

[0019] Furthermore, the density of the second light extraction dots is 35% at the maximum and 10% at the minimum.

[0020] The beneficial effects of the utility model are:

[0021] 1. By setting shielding dots with different diameters and reflectivity on both sides of the glass, the effect of completely shielding the mini-led light shadow at 0 mixed light distance is achieved, thus improving the picture effect of the backlight module;

[0022] 2. By setting light extraction points of different densities on both sides of the glass, the purpose of further uniform light is achieved and the optical effect of the backlight module is improved.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of the miniled light mixing distance glass diffusion plate of the utility model to eliminate the lamp shadow;

[0026] Figure 2 It is a structural schematic diagram of the light-incoming surface of the glass substrate of the miniLED light mixing distance glass diffusion plate structure for eliminating lamp shadows of the utility model;

[0027] Figure 3 It is a structural schematic diagram of the second shielding network point of the utility model.

[0028] In the figure:

[0029] 1. LED light board; 11. mini led lamp beads;

[0030] 2. Glass substrate; 21. First shielding dot; 22. First light extraction dot; 23. Second shielding dot; 24. Second light extraction dot;

[0031] 3. Light uniformity film;

[0032] 4. QD film;

[0033] 5. Optical incremental film. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Example:

[0036] like Figures 1 to 3As shown, a structure for eliminating lamp shadows by mini-led light mixing and glass diffusion plate comprises: an LED lamp board 1 and a plurality of mini-led lamp beads 11 arranged on the LED lamp board 1; wherein, a glass substrate 2 is arranged at intervals on one side of the LED lamp board 1 located at the mini-led lamp beads 11, the glass substrate 2 and the LED lamp board 1 are arranged in parallel, a light homogenizing film 3 is arranged at intervals on the side of the glass substrate 2 away from the LED lamp board 1, a QD film 4 is arranged on the side of the light homogenizing film 3 away from the glass substrate 2, and an optical increment film 5 is arranged on the side of the QD film 4 away from the light homogenizing film 3. The light homogenizing film 3 plays a role in further shielding the lamp shadows and the dots of the diffusion plate.

[0037] In this embodiment, a first shielding dot 21 is provided on the side of the glass substrate 2 facing the LED lamp board 1, and the first shielding dot 21 and the miniled lamp bead 11 are provided correspondingly; a plurality of first light extraction dots 22 are provided on the side of the glass substrate 2 facing the LED lamp board 1. Among them, the first light extraction dots 22 are evenly distributed on the glass substrate 2. The diameter of the first shielding dot 21 is 20% greater than the diameter of the miniled lamp bead 11; the thickness of the first shielding dot 21 is 18-20 microns. The density of the first light extraction dots 22 gradually increases in the direction away from the miniled lamp bead 11. The density of the first light extraction dots 22 is a maximum density of 45% and a minimum density of 15%. Among them, the first light extraction dots 22 can use but are not limited to diffusion ink, and the refractive index is 1.65-1.75. The first shielding dots 21 can use but are not limited to reflective ink.

[0038] The first shielding dots 21 can shield the shadow of the miniled lamp bead 11, and the first light extraction dots 22 can even out the light, allowing the light to pass through the backlight module more softly and evenly.

[0039] At the same time, a second shielding dot 23 is arranged on the side of the glass substrate 2 away from the LED lamp board 1, and the second shielding dot 23 and the miniled lamp bead 11 are arranged correspondingly; a plurality of second light extraction dots 24 are arranged on the side of the glass substrate 2 away from the LED lamp board 1. The diameter of the second shielding dot 23 is 40% greater than the diameter of the miniled lamp bead 11; the thickness of the second shielding dot 23 is 10-12 microns. The density of the second light extraction dots 24 gradually increases in the direction away from the miniled lamp bead 11. The density of the second light extraction dots 24 is 35% at the maximum and 10% at the minimum.

[0040] The second shielding dots 23 can shield the shadow of the mini led lamp bead 11 again to improve the shielding effect. The first light extraction dots 22 can even out the light and further improve the softness of the light, allowing the light to pass through the backlight module more softly and evenly.

[0041] To sum up: by setting shielding dots with different dot diameters and reflectivity on both sides of the glass, the effect of completely shielding the miniled lamp shadow at 0 mixed light distance is achieved, thereby improving the picture effect of the backlight module; by setting light extraction dots with different densities on both sides of the glass, the purpose of further uniform light is achieved, thereby improving the optical effect of the backlight module.

[0042] The various devices selected in this application are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0043] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0045] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A mini-LED light mixing distance glass diffusion plate to eliminate lamp shadows, characterized in that: include: An LED light board (1) and a plurality of mini-LED lamp beads (11) arranged on the LED light board (1); The LED light board (1) is provided with a glass substrate (2) at a distance from one side of the mini-LED lamp bead (11); the glass substrate (2) and the LED light board (1) are arranged in parallel; a light-homogenizing film (3) is provided at a distance from one side of the glass substrate (2) away from the LED light board (1); a QD film (4) is provided at a side of the light-homogenizing film (3) away from the glass substrate (2); and an optical incremental film (5) is provided at a side of the QD film (4) away from the light-homogenizing film (3); A first shielding grid point (21) is arranged on the side of the glass substrate (2) facing the LED light board (1), and the first shielding grid point (21) and the mini-LED lamp bead (11) are arranged correspondingly; A plurality of first light extraction points (22) are arranged on the side of the glass substrate (2) facing the LED light board (1).

2. A mini-LED light mixing distance glass diffusion plate to eliminate lamp shadows as claimed in claim 1, characterized in that: The first light extraction grid points (22) are evenly distributed on the glass substrate (2).

3. A mini-LED light mixing distance glass diffusion plate to eliminate lamp shadows as claimed in claim 2, characterized in that: The diameter of the first shielding mesh point (21) is 20% greater than the diameter of the miniled lamp bead (11); The thickness of the first shielding dots (21) is 18-20 microns.

4. A mini-LED light mixing distance glass diffusion plate to eliminate lamp shadows as claimed in claim 3, characterized in that: A second shielding grid point (23) is arranged on a side of the glass substrate (2) away from the LED light board (1), and the second shielding grid point (23) and the mini-LED lamp bead (11) are arranged correspondingly; A plurality of second light extraction points (24) are arranged on a side of the glass substrate (2) away from the LED light board (1).

5. A mini-LED light mixing distance glass diffusion plate to eliminate lamp shadows as claimed in claim 4, characterized in that: The diameter of the second shielding mesh point (23) is 40% greater than the diameter of the miniled lamp bead (11); The thickness of the second shielding dots (23) is 10-12 microns.

6. A mini-LED light mixing distance glass diffusion plate to eliminate lamp shadows as claimed in claim 5, characterized in that: The density of the first light extraction network points (22) gradually increases in a direction away from the miniled lamp bead (11).

7. A mini-LED light mixing distance glass diffusion plate to eliminate lamp shadows as claimed in claim 6, characterized in that: The density of the first light extraction dots (22) is 45% at the maximum and 15% at the minimum.

8. A mini-LED light mixing distance glass diffusion plate to eliminate lamp shadows as claimed in claim 7, characterized in that: The density of the second light extraction network points (24) gradually increases in a direction away from the miniled lamp bead (11).

9. A mini-LED light mixing distance glass diffusion plate to eliminate lamp shadows as claimed in claim 8, characterized in that: The density of the second light extraction dots (24) is 35% at the maximum and 10% at the minimum.

Images