A light guide plate with a light entrance hole structure

Abstract

The present invention discloses a light guide plate with a light-entry hole structure, comprising: a light guide plate body; at least one side of the light guide plate body serving as a light-entry surface; a plurality of light-entry holes formed on the light-entry surface; the light-entry holes being used to accommodate LED lamp beads; and a plurality of light-guiding bumps on the surface of the light guide plate body. The light emitted by the LED lamp beads in the present invention is dispersed through the light-entry holes and light-guiding bumps, significantly improving image quality uniformity, reducing the number of LED lamp beads, and lowering costs.

Description

Technical Field

[0001] The present invention relates to the technical field of displays, and more particularly to a light guide plate with a light entrance hole structure. Background Art

[0002] Currently, the mainstream applications of LED backlights for display devices are edge-lit and direct-lit backlights. Direct-lit backlights utilize LED light strips paired with optical lenses. While their advantage is more uniform image quality, their disadvantage is the need to distribute LED light bulbs across the entire display screen, resulting in relatively high costs and the inability to achieve a thinner design. Edge-lit backlights utilize LED light strips paired with a light guide plate. Their advantage is that they only require LED light strips on the side of the display, reducing the overall thickness of the screen and making the display thinner. Their disadvantage is lower image uniformity.

[0003] Therefore, how to provide a light guide plate with a light hole structure that is low in cost and has uniform image quality is an urgent problem that those skilled in the art need to solve. Summary of the Invention

[0004] In view of this, the present invention provides a light guide plate with a light entrance hole structure. The light source emitted by the LED lamp beads is diverged through the light entrance hole and the light guide protrusions, which can significantly improve the uniformity of image quality, reduce the number of LED lamp beads, and reduce costs.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A light guide plate with a light entrance hole structure includes: a light guide plate body; at least one side of the light guide plate body is a light entrance surface; a plurality of light entrance holes are opened on the light entrance surface; the light entrance holes are used to accommodate LED lamp beads; and the surface of the light guide plate body has a plurality of light guide bumps.

[0007] Preferably, in the above-mentioned light guide plate containing a light hole structure, the material of the light guide plate body is glass or optical grade acrylic.

[0008] Preferably, in the above-mentioned light guide plate having a light entrance hole structure, the light entrance hole is an ellipsoidal hole.

[0009] Preferably, in the above-mentioned light guide plate with a light entrance hole structure, a plurality of corrugated circle structures are provided on the inner wall of the light entrance hole in a circumferential direction.

[0010] Preferably, in the above-mentioned light guide plate including the light incident hole structure, the corrugated circular structure is recessed into the inner wall of the light incident hole.

[0011] Preferably, in the above-mentioned light guide plate containing a light entrance hole structure, the light guide protrusion is a spherical structure with a diameter of 0.1 mm to 0.5 mm.

[0012] Preferably, in the above-mentioned light guide plate containing a light hole structure, the light guide protrusions and the light guide plate body are an integrated structure.

[0013] Preferably, in the above-mentioned light guide plate containing a light entrance hole structure, the thickness of the light guide plate body is ≥2 mm.

[0014] Preferably, in the above-mentioned light guide plate having a light entrance hole structure, the diameter of the light entrance hole is less than or equal to 4 / 5 of the thickness of the light guide plate body.

[0015] Preferably, the above-mentioned light guide plate containing a light hole structure further includes reflective paper; the reflective paper is adapted to the shape of the light guide plate body and is attached to the end of the light guide protrusion away from the light guide plate body.

[0016] It can be seen from the above technical solution that compared with the prior art, the present invention discloses a light guide plate with a light entrance hole structure. In the backlight module application, low-power LED lamp beads can be replaced with high-power LED lamp beads, and the LED lamp beads are installed in the light entrance hole. The light source emitted by the LED lamp beads is diverged to the light guide bump through the light entrance hole. The light is diffused and transmitted to various angles through the spherical surface of the light guide bump, and is reflected by the reflective paper to finally form a uniform light source, thereby ensuring the uniformity of the image quality of the display panel, and can greatly reduce the number of LED lamp beads installed, save costs, and make the display device lighter and thinner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0018] Figure 1 The accompanying drawing is a top view of a light guide plate including a light entrance hole structure provided by the present invention;

[0019] Figure 2 The accompanying drawing is a structural schematic diagram of a light guide plate with a light entrance hole structure provided by the present invention;

[0020] Figure 3 The accompanying drawing is a schematic structural diagram of the light entrance hole provided by the present invention. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0022] like Figure 1-3 As shown, an embodiment of the present invention discloses a light guide plate with a light entrance hole structure, including: a light guide plate body 1; at least one side of the light guide plate body 1 is a light entrance surface; a plurality of light entrance holes 2 are opened on the light entrance surface; the light entrance holes 2 are used to accommodate LED lamp beads; and a plurality of light guide bumps 3 are provided on the surface of the light guide plate body 1.

[0023] The light guide plate body 1 is made of glass or optical-grade acrylic, and its thickness T is greater than or equal to 2 mm. The light entrance hole 2 is designed according to the applied light source, and its diameter is Φ less than or equal to T*4 / 5.

[0024] In a preferred embodiment, the light entrance hole 2 is an ellipsoidal hole, and a plurality of corrugated circular structures 4 are provided around the inner wall of the light entrance hole 2. The corrugated circular structures 4 are recessed into the inner wall of the light entrance hole 2. The corrugated circular structures 4 enable the point light source to form multiple refraction angles, ensuring that the point light source is better dispersed to the light-guiding protrusion 3.

[0025] In another embodiment, the light-guiding bumps 3 are spherical structures with a diameter of 0.1 mm to 0.5 mm. The light-guiding bumps 3 are integrally formed with the light guide plate body 1. Alternatively, the light-guiding bumps 3 are formed by printing. The light-guiding bumps 3 and the light guide plate body 1 can be integrally injection molded using an injection mold, resulting in a smoother overall structure.

[0026] In other embodiments, reflective paper is further included; the reflective paper is adapted to the shape of the light guide plate body 1 and is attached to the end of the light guide protrusion 3 away from the light guide plate body 1.

[0027] The light emitted by the LED lamp bead is refracted through the light entrance hole 2 and transmitted to the light guide bump 3. The light is diffused at various angles through the spherical surface of the light guide bump 3. The light is diffused and transmitted through the light guide bumps 2 of various densities and sizes, and is reflected by the reflective paper to produce uniform white light, thereby achieving uniform picture quality and improving the viewing effect.

[0028] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0029] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A light guide plate with a light entrance hole structure, characterized in that: include: A light guide plate body (1); at least one side of the light guide plate body (1) is a light entrance surface; a plurality of light entrance holes (2) are provided on the light entrance surface; the light entrance holes (2) are used to accommodate LED lamp beads; a plurality of light guide protrusions (3) are provided on the surface of the light guide plate body (1); a plurality of corrugated circle structures (4) are circumferentially provided on the inner wall of the light entrance hole (2); the corrugated circle structures (4) are recessed in the inner wall of the light entrance hole (2); the light entrance hole (2) is an ellipsoidal hole.

2. The light guide plate with a light hole structure according to claim 1, wherein: The light guide plate main body (1) is made of glass or optical grade acrylic.

3. The light guide plate with a light hole structure according to claim 1, wherein: The light-guiding convex point (3) is a spherical structure with a diameter of 0.1 mm to 0.5 mm.

4. The light guide plate with a light hole structure according to claim 1, wherein: The light guide protrusions (3) and the light guide plate main body (1) are an integrated structure.

5. The light guide plate with a light hole structure according to claim 1, wherein: The thickness of the light guide plate main body (1) is ≥2 mm.

6. The light guide plate with a light hole structure according to claim 1, wherein: The diameter of the light entrance hole (2) is less than or equal to 4 / 5 of the thickness of the light guide plate body (1).

7. The light guide plate with a light hole structure according to claim 1, wherein: It also includes reflective paper; the reflective paper is adapted to the shape of the light guide plate main body (1) and is attached to the end of the light guide protrusion (3) away from the light guide plate main body (1).

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