CN213182103U

CN213182103U - Light guide plate and display screen with same

Info

Publication number: CN213182103U
Application number: CN202021733699.XU
Authority: CN
Inventors: 陶朝新; 肖葵; 阳波
Original assignee: Shenzhen Chaoxian Technology Co ltd
Current assignee: Shenzhen Chaoxian Technology Co ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-05-11
Anticipated expiration: 2030-08-17

Abstract

The utility model belongs to the technical field of display device, especially, relate to a light guide plate and have its display screen. Wherein, the light guide plate includes leaded light plate, LED lamp strip, back reflection stratum and reflection of light rete, and leaded light plate is equipped with into light lateral wall, reflection of light lateral wall, light-emitting face and the back relative with the light-emitting face, goes into the light lateral wall and surrounds the light-emitting face with reflection of light lateral wall end to end, and LED lamp strip pastes and adorns in going into the light lateral wall, and the back reflection stratum sets up in the back, and the coating or the electroplating have reflection of light rete on the reflection of light lateral wall to, the seamless butt joint of crossing edge between. Use the technical scheme of the utility model can solve the unable totally enclosed light guide plate of current processing preparation technology/diffuser plate, cause the light quantity loss, reduce the problem of light-emitting efficiency.

Description

Light guide plate and display screen with same

Technical Field

The utility model belongs to the technical field of display device, especially, relate to a light guide plate and have its display screen.

Background

Display products such as displays and televisions are continuously sought after for display effects and service performance, and meanwhile, the pursuit of product modeling is continuously improved, and the aspects of exquisite appearance, low cost, convenient maintenance and the like are the subjects of continuous research and study of research and development personnel. The glass light guide plate/diffusion plate is used as a component of a backlight source of a television or a display, and a point light source is converted into a surface light source, so that a display product has the characteristics of reduced comprehensive cost, improved production efficiency, exquisite appearance, ultrathin thickness and the like, a backlight module can be modularized and standardized, and the development and manufacturing cost is reduced.

In the conventional light guide plate/diffusion plate, light reflection is realized by using an end face reflection plate around the side wall of the plate, and the end face reflection plate needs to be coated with back glue and then manually attached to the end face of the plate. Such a manufacturing process cannot completely seal the light guide plate/diffuser plate, resulting in light loss and reduced light extraction efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a light guide plate and have its display screen aims at solving the unable totally enclosed light guide plate of current processing preparation technology/diffuser plate, causes the light loss, reduces the problem of luminous efficiency.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a light guide plate, includes leaded light plate and LED lamp strip, and leaded light plate is equipped with income light lateral wall, reflection of light lateral wall, light-emitting face and the back relative with the light-emitting face, goes into the light lateral wall and surrounds the light-emitting face with reflection of light lateral wall end to end, and LED lamp strip pastes and adorns in going into the light lateral wall, and the light guide plate still includes: the back reflection layer is arranged on the back surface; the reflecting side wall of the reflecting film layer is coated or electroplated with the reflecting film layer, and the intersecting edges between the reflecting film layer and the back reflecting layer are in seamless butt joint.

Optionally, the light guide plate further comprises a light leakage prevention member, the light leakage prevention member is matched with the light incidence side wall, the light leakage prevention member is arranged on the light incidence side wall, the light leakage prevention member and the light incidence side wall form an assembly space, and the LED lamp strip is installed in the assembly space.

Optionally, an inner wall surface of the light leakage preventing member facing the light incident side wall is a light reflecting surface.

Optionally, the light leakage prevention member has a connection edge, a butt-joint edge and an intermediate connection section, the connection edge and the butt-joint edge are respectively located at two ends of the intermediate connection section, the connection edge is connected to the edge of the back surface close to the light incident side wall, and the intersecting edge of the light emergent plate surface and the light incident side wall is in sealed butt joint with the butt-joint edge.

Optionally, the light guide plate is a rectangular plate, at least one of the four side walls of the light guide plate is a light reflecting side wall, the remaining side walls are light incident side walls, the number of the light leakage prevention members is equal to the number of the light incident side walls, and two adjacent light leakage prevention members are in seamless butt joint.

Optionally, the light guide plate is a rectangular plate, one of the four sidewalls of the light guide plate is a light incident sidewall, and the remaining three sidewalls are light reflecting sidewalls.

Optionally, the light leakage preventing member is formed by plastic injection molding in one piece.

Optionally, the back reflection layer is a reflective sheet made of PP material, and the back reflection layer is attached to the back surface.

Optionally, the back reflection layer is a reflective film formed by electroplating.

According to the utility model discloses a further aspect provides a display screen. Specifically, the white display panel includes the aforementioned light guide plate, which is used as a backlight light source of the display panel.

The utility model discloses following beneficial effect has at least:

use the utility model provides a light guide plate is as the light source in a poor light of display screen, shines behind the LED lamp strip launching ray and propagates in to the light guide plate spare to, will shine through the back reflection stratum and propagate to the light reflection at the back and be used for the light-emitting, will shine through the reflection rete and propagate to the light reflection of light lateral wall and reflect light and be used for the light-emitting, improved by the light-emitting quantity that the light-emitting face light-emitting is as being shaded, improved luminous efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic front view of a light guide plate without a light leakage preventing member according to an embodiment of the present invention;

FIG. 2 is an enlarged view at B in FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is an enlarged view at C of FIG. 3;

fig. 5 is a schematic front view of a light guide plate with a light leakage preventing member according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view taken in the direction D-D of FIG. 5;

fig. 7 is an enlarged view at E in fig. 6.

Wherein, in the figures, the respective reference numerals:

10. a light guide plate member; 11. a light-emitting plate surface; 20. an LED light bar; 30. a back reflective layer; 40. a light reflecting film layer; 50. a light leakage preventing member; 51. an assembly space; 52. connecting the edges; 53. butting edges; 54. an intermediate connecting section.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1 to 4, the present invention provides a light guide plate, which is used as a backlight source of a display screen in the form of a surface light source. Specifically, the utility model discloses a light guide plate includes leaded light plate 10, LED lamp strip 20, back reflection stratum 30 and reflection of light rete 40, has constituteed the core structure of this light guide plate, realizes managing the light-emitting to the light that LED lamp strip 20 sent. In a specific assembling process, the light guide plate 10 is provided with an incident side wall (not shown), a reflective side wall (not shown), an emergent plate surface 11, and a back surface (not shown) opposite to the emergent plate surface 11, wherein the incident side wall and the reflective side wall are connected end to surround the emergent plate surface 11 (at this time, the outline shape of the emergent plate surface 11 is in various shapes such as rectangle, circle, ellipse, regular polygon, and the like, and the outline shape of the emergent plate surface 11 can be actually selected according to actual application requirements). LED lamp strip 20 pastes through transparent encapsulation and adorns in going into the light lateral wall, light irradiation entering leaded light plate 10 propagates after LED lamp strip 20 gives out light, light irradiation propagates to each reflection of light lateral wall, back and light-emitting face 11, reveal away from reflection of light lateral wall and back in order not to let light, therefore, back reflection stratum 30 sets up in the back, the coating or the electricity is plated with reflection of light rete 40 on the reflection of light lateral wall, and, the seamless butt joint of crossing edge between reflection of light rete 40 and the back reflection of light rete 30, thereby will shine and propagate to each reflection of light lateral wall and the light at the back and reflect in order to be used for whole light-emitting, improve.

Use the utility model provides a light guide plate is as the light source in a poor light of display screen, shines behind LED lamp strip 20 emitting light and propagates in leading light plate 10 to, will shine through back reflection stratum 30 and propagate to the light reflection at the back and be used for the light-emitting, will shine through reflection of light rete 40 and propagate to the light reflection of light lateral wall and reflect light and be used for the light-emitting, improved by 11 light-emitting of light-emitting face as the light output volume in a poor light, improved luminous efficiency.

In the light guide plate of the present embodiment, the back reflection layer 30 is a light reflection sheet made of a PP material (polypropylene material), and the back reflection layer 30 is attached to the back surface of the light guide plate member 10 by a transparent adhesive. Generally, the area of the reflector before mounting is slightly larger than that of the back surface, and after mounting is completed, the reflector is trimmed to align the reflector with the edges of the reflective side wall and the incident side wall, so that when the reflective side wall is coated or electroplated with the reflective film layer 40, the reflective film layer 40 is directly coated or electroplated on the corresponding side edge of the reflector, and thus, seamless butt joint of the intersecting edges between the reflective film layer 40 and the back reflection layer 30 is completed. Alternatively, the back reflection layer 30 of the present embodiment is a reflective film formed by electroplating.

In order to further reduce light leakage, as shown in fig. 5 to 7, the light guide plate further includes a light leakage preventing member 50, the light leakage preventing member 50 is adapted to the light incident side wall, the light leakage preventing member 50 is disposed on the light incident side wall, the light leakage preventing member 50 and the light incident side wall form an assembly space 51, and the LED light bar 20 is mounted in the assembly space 51. In this way, light leaking from a light leakage gap that may be left after the LED light bar 20 is mounted on the light incident side wall is irradiated onto the light leakage prevention member 50, and in order to utilize light leaking from the side wall where the LED light bar 20 is mounted for light outgoing to increase the amount of outgoing light, the inner wall surface of the light leakage prevention member 50 facing the light incident side wall is a light reflecting surface.

As shown in fig. 6 and 7, in the light guide plate of the present invention, when the light leakage preventing member 50 is specifically designed, the light leakage preventing member 50 is designed to be composed of three parts, i.e., a connection edge 52, a butt edge 53 and an intermediate connection section 54, and the connection edge 52 and the butt edge 53 are respectively located at both ends of the intermediate connection section 54. When assembling light leakage prevention component 50, connect edge 52 and play the effect of connecting fixed light leakage prevention component 50 in the edge that the back is close to the income light lateral wall, connect edge 52 can be fixed on leaded light plate 10 through the binder bonding, also can be through screw locking on leaded light plate 10 to, the crossing limit and the butt joint edge 53 of light-emitting face 11 and income light lateral wall are sealed to dock, thereby be about to light shelter from completely and reflect to propagate again in the leaded light plate 10. Therefore, the light emitted from the LED light bar 20 is used as a backlight source from the light-emitting plate surface 11, so that the light-emitting quantity is improved, and the light-emitting efficiency is improved.

Preferably, in the light guide plate of the present embodiment, on the basis of meeting the requirement of the quantity of the emitted light, the light guide plate 10 is a rectangular plate, one of the four side walls of the light guide plate 10 is an incident side wall, and the remaining three side walls are reflective side walls. If the required light quantity is high, in another possible embodiment, the light guide plate 10 is also a rectangular plate, two or three of the four sidewalls of the light guide plate 10 are light-reflecting sidewalls, the remaining sidewalls are light-incident sidewalls, the number of the light leakage preventing members 50 is equal to the number of the light-incident sidewalls, and two adjacent light leakage preventing members 50 are in seamless butt joint. Or even four side walls are all light reflecting side walls, and the light reflecting film layer 40 is coated or electroplated on the four light reflecting side walls.

When the light leakage preventing member 50 is manufactured, the light leakage preventing member 50 is formed by plastic injection molding.

According to the utility model discloses a further aspect provides a display screen. Specifically, the display panel includes the aforementioned light guide plate for use as a backlight light source for the display panel in the form of a surface light source.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a light guide plate, includes light guide plate spare (10) and LED lamp strip (20), light guide plate spare (10) are equipped with income light lateral wall, reflection of light lateral wall, light-emitting face (11) and the back relative with light-emitting face (11), go into the light lateral wall with reflection of light lateral wall end to end encloses light-emitting face (11), LED lamp strip (20) paste in go into the light lateral wall, its characterized in that, the light guide plate still includes:

a back reflective layer (30), said back reflective layer (30) disposed on said back side;

the reflecting film layer (40) is coated or electroplated on the reflecting side wall, and the intersecting edge between the reflecting film layer (40) and the back reflecting layer (30) is in seamless butt joint.

2. The light guide plate according to claim 1,

the light guide plate still includes leak protection light component (50), leak protection light component (50) with go into light lateral wall looks adaptation, leak protection light component (50) set up in go into the light lateral wall, leak protection light component (50) with go into the light lateral wall and form assembly space (51), LED lamp strip (20) install in assembly space (51).

3. The light guide plate according to claim 2,

the inner wall surface of the light leakage prevention member (50) facing the light incident side wall is a light reflecting surface.

4. The light guide plate according to claim 3,

leak protection light component (50) have connect edge (52), butt joint edge (53) and intermediate junction section (54), connect edge (52) with butt joint edge (53) are located respectively the both ends of intermediate junction section (54), connect edge (52) connect in the back is close to go into the edge of light lateral wall, go out light face (11) with the crossing limit of going into the light lateral wall with butt joint edge (53) seal butt joint.

5. The light guide plate according to claim 4,

the light guide plate piece (10) is a rectangular plate piece, at least one side wall of four side walls of the light guide plate piece (10) is the light reflecting side wall, the remaining side walls are the light incident side walls, the quantity of the light leakage prevention components (50) is equal to that of the light incident side walls, and the light leakage prevention components (50) are in seamless butt joint.

6. The light guide plate according to claim 4,

the light guide plate is characterized in that the light guide plate (10) is a rectangular plate, one of four side walls of the light guide plate (10) is the light incident side wall, and the remaining three side walls are the light reflecting side walls.

7. The light guide plate according to claim 2,

the light leakage prevention component (50) is formed by plastic injection molding in an integrated manner.

8. The light guide plate according to any one of claims 1 to 6,

the back reflecting layer (30) is a reflecting sheet made of PP materials, and the back reflecting layer (30) is attached to the back surface.

9. The light guide plate according to any one of claims 1 to 6,

the back reflecting layer (30) is a reflecting film formed by electroplating.

10. A display screen, comprising the light guide plate according to any one of claims 1 to 9, the light guide plate being used as a backlight light source of the display screen.