CN219957905U

CN219957905U - High-brightness light guide plate

Info

Publication number: CN219957905U
Application number: CN202320173803.1U
Authority: CN
Inventors: 王健; 陈玮
Original assignee: Talant Optronics Suzhou Co ltd
Current assignee: Talant Optronics Suzhou Co ltd
Priority date: 2023-02-10
Filing date: 2023-02-10
Publication date: 2023-11-03
Anticipated expiration: 2033-02-10

Abstract

The utility model discloses a high-luminance light guide plate, which comprises a light guide plate body, wherein one surface of the light guide plate body is provided with a light incident surface, one surface of the light guide plate body is provided with a light emergent surface, laser dots are arranged in the light incident surface, the light guide plate body is a mixed area and is formed by mixing the laser dots and the high-luminance dots, the light emergent surface is also provided with the high-luminance dots, and the numbers of the dots in the light incident surface, the light guide plate body and the light emergent surface gradually decrease. The laser dots are adopted at the side close to the light source, then the laser dots are gradually mixed into the high-brightness dots and then become simple high-brightness dots, the laser dots realize scattering of the dots and optimize the LED lamp shadow problem through the round shape with the convex periphery in the middle, the light guide plate body is a transition area of the two dots, and the light is scattered irregularly inside by the irregularly arranged horseshoe-shaped high-brightness dots in the light emitting surface, so that the optical utilization rate is ensured, and the light guide quality of the light guide plate is improved.

Description

High-brightness light guide plate

Technical Field

The utility model relates to the technical field of light guide plates, in particular to a high-brightness light guide plate.

Background

The liquid crystal display device has the advantages of light weight, thinness, low power consumption and the like, and is widely applied to modern information equipment. Since the liquid crystal in the liquid crystal display panel itself does not have a light emitting property, a surface light source device, such as a backlight module, must be provided to the liquid crystal display panel in order to achieve a display effect, and the surface light source device functions to provide a surface light source with sufficient and uniform luminance to the liquid crystal display panel. For the LED light source, the LED has a limited divergence angle when emitting light and the energy of the light emitting part is larger, so that when the light guide plate is lightened by the LED, obvious bright and dark phenomena, namely commonly called HotSpot, can be seen at the light entering part of the light guide plate, and the quality of the light entering part of the LED is poor when the light guide plate is covered with glass.

The principle of the light guide plate is that the total reflection of the light of the LED light source is destroyed by utilizing the dots (ink dots, hot-pressing dots and injection molding dots), so that the light comes out of the light guide plate, the purpose that the light source of the LED light source is changed into a surface light source is realized, a luminous source is provided for a display, the existing hot-pressing technology of the light guide plate adopts a laser form to process the steel plate dots, and then the steel plate dots are thermally transferred onto the light guide plate to form corresponding dots, and the processed dots in the form are single in form and single in shape and cannot meet the requirement of high utilization rate.

Therefore, we propose a high-brightness light guide plate.

Disclosure of Invention

The present utility model is directed to a high-brightness light guide plate, which solves the above-mentioned problems of the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the high-brightness light guide plate comprises a light guide plate body, wherein one surface of the light guide plate body is provided with a light incident surface, one surface of the light guide plate body is provided with a light emergent surface, the numbers of the mesh points in the light incident surface, the light guide plate body and the light emergent surface gradually decrease, the light incident surface is internally provided with laser mesh points, the diameter of the protruding part of each laser mesh point is 40-100um, and the height of the recessed part of each laser mesh point is 2-8um;

the diameter of the laser lattice points is 40-60um, the depth is 2-5um, the distance between the laser lattice points is 0-2mm, the laser lattice points are distributed randomly, the laser lattice points are processed by laser processing equipment, the shape of the laser lattice points is a circle with a convex middle and a concave periphery, and the width of the light incident surface is 5-15mm;

the light guide plate body is a mixed area and is formed by mixing the laser mesh points and the high-brightness mesh points, the high-brightness mesh points are processed by a collision point process, the angle of the light-facing surface of the high-brightness mesh points is 1-30 degrees, and the appearance is like a horseshoe print;

the laser mesh points and the high-brightness mesh points are 50-100um in size and 2-8um in depth, the laser mesh points and the high-brightness mesh points are distributed randomly, and the width range of the light guide plate body is 5-15mm;

high-luminance dots are also arranged in the light-emitting surface, the size of the high-luminance dots in the light-emitting surface is 50-150um, the depth is 5-15um, and the distribution is random.

Compared with the prior art, the utility model has the beneficial effects that: the utility model adopts the laser dots near the light source side, then gradually mixes the high-brightness dots and then changes the high-brightness dots into the pure high-brightness dots, the laser dots 201 realize scattering of the dots through the round shape with the convex periphery concave in the middle, and optimize the LED lamp shadow problem, the light guide plate body is a mixed area, which is a transition area of the two dots, improves the picture, and leads the light to be scattered irregularly inside by irregularly arranging the horseshoe-shaped high-brightness dots in the light emitting surface, thereby ensuring the optical utilization rate and improving the light guide quality of the light guide plate.

Drawings

FIG. 1 is a schematic front view of the present utility model;

FIG. 2 is a schematic diagram of the internal structure of the present utility model;

FIG. 3 is a schematic diagram of a laser dot structure according to the present utility model.

In the figure: 1. a light guide plate body; 101. high brightness dots; 2. a light incident surface; 201. laser dots; 3. a light-emitting surface.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides a technical solution: the utility model provides a high brilliance light guide plate, includes light guide plate body 1, and the front of light guide plate body 1 is equipped with into plain noodles 2, and the back of light guide plate body 1 is equipped with out plain noodles 3, and the net point quantity in plain noodles 2, light guide plate body 1 and the plain noodles 3 is the gradual decline trend.

The size of the laser dots 201 is 40-60um, the depth is 2-5um, the distance between the laser dots 201 is 0-2mm, the laser dots 201 are distributed randomly, the diameter of the protruding part of the laser dots 201 is 40-100um, and the height of the recessed part of the laser dots 201 is 2-8um;

the laser screen dots 201 are processed by laser processing equipment, the shape of the laser screen dots is a circle with a convex middle and a concave periphery, and the width range of the light incident surface 2 is 5-15mm;

the light guide plate body 1 is a mixed area and is formed by mixing the laser mesh points 201 and the high-brightness mesh points 101, the sizes of the laser mesh points 201 and the high-brightness mesh points 101 are 50-100um, the depth is 2-8um, the distribution of the laser mesh points 201 and the high-brightness mesh points 101 is randomly distributed, and the width range of the light guide plate body 1 is 5-15mm;

the high-brightness dots 101 are also arranged in the light-emitting surface 3, the high-brightness dots 101 are processed by a collision point process, the angle of the light-receiving surface of the high-brightness dots 101 is 1-30 degrees, the appearance is like a horseshoe print, the size of the high-brightness dots 101 in the light-emitting surface 3 is 50-150um, the depth is 5-15um, and the distribution is random; the width of the light-emitting surface 3 ranges to the edge position of the light guide plate body 1.

The working principle of this embodiment is as follows: the laser mesh point 201 is adopted at the side close to the light source, then the laser mesh point 101 is gradually mixed, the high-luminance mesh point 101 is changed into a pure high-luminance mesh point 101, the laser mesh point 201 achieves mesh point scattering through a round shape with a convex middle part and a concave periphery, the problem of LED lamp shadow is solved, the light guide plate body 1 is a mixed area, a transition area of two mesh points is used for improving a picture, and the light is scattered irregularly in the inside through the irregularly arranged horseshoe-shaped high-luminance mesh point 101 in the light emitting surface 3, so that the optical utilization rate is ensured, and the light guide quality of the light guide plate is improved.

Although embodiments of the present utility model 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 therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high brilliance light guide plate, includes light guide plate body (1), its characterized in that: one side of the light guide plate body (1) is provided with a light incident surface (2), one side of the light guide plate body (1) is provided with a light emergent surface (3), and the number of the dots in the light incident surface (2), the light guide plate body (1) and the light emergent surface (3) is gradually decreased.

2. The high-luminance light guide plate according to claim 1, wherein: the laser screen dots (201) are arranged in the light incidence surface (2) and have the size of 40-60um, the depth of 2-5um, the distance between the laser screen dots (201) is 0-2mm, the laser screen dots (201) are distributed randomly, the laser screen dots (201) are processed by laser processing equipment, the shape of the laser screen dots is a circle with a convex middle and a concave periphery, and the width range of the light incidence surface (2) is 5-15mm.

3. The high-luminance light guide plate according to claim 1, wherein: the light guide plate body (1) is a mixed area and is formed by mixing laser mesh points (201) and high-brightness mesh points (101), the sizes of the laser mesh points (201) and the high-brightness mesh points (101) are 50-100um, the depths of the laser mesh points (201) and the high-brightness mesh points (101) are 2-8um, the distribution of the laser mesh points (201) and the high-brightness mesh points (101) is randomly distributed, and the width range of the light guide plate body (1) is 5-15mm.

4. A high-luminance light guide plate according to claim 3, wherein: high-luminance dots (101) are also arranged in the light-emitting surface (3), the size of the high-luminance dots (101) in the light-emitting surface (3) is 50-150um, the depth is 5-15um, and the high-luminance dots are distributed randomly.

5. A high-luminance light guide plate according to claim 3, wherein: the high-brightness lattice point (101) is processed by a collision point process, the angle of the light-facing surface of the high-brightness lattice point (101) is 1-30 degrees, and the appearance is like a horseshoe print.

6. The high-luminance light guide plate according to claim 2, wherein: the diameter of the protruding part of the laser screen dot (201) is 40-100um, and the height of the recessed part of the laser screen dot (201) is 2-8um.