CN216210350U

CN216210350U - High-transmittance backlight source

Info

Publication number: CN216210350U
Application number: CN202122485016.4U
Authority: CN
Inventors: 周剑平
Original assignee: Dongguan Pingyang Electronics Co ltd
Current assignee: Dongguan Pingyang Electronics Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-04-05
Anticipated expiration: 2031-10-15

Abstract

The utility model discloses a high-transmittance backlight source which comprises a bottom plate, a backlight source, a protective frame and a brightness enhancement film, wherein the backlight source is glued on the top of the bottom plate, the backlight source consists of a light guide plate, an LED light source, a lower reflecting film, a side reflecting film, a lower diffusion film, a brightness enhancement film and an upper diffusion film, and the protective frame is fixed on the outer side of the top of the bottom plate through bolts. The LED lamp has good light transmittance, can improve the irradiation brightness of light, reduces the loss in the light conduction process, has strong protection capability and is convenient to dissipate heat.

Description

High-transmittance backlight source

Technical Field

The utility model relates to the technical field of backlight sources, in particular to a high-transmittance type backlight source.

Background

The backlight source is a light source located behind a Liquid Crystal Display (LCD), and its light emitting effect directly affects the visual effect of the liquid crystal display module (LCM), and the LCD itself does not emit light, and it displays graphics or its result of modulating light.

At present, in the design of the backlight, the selection of the used light source is important, the used light source determines the photoelectric parameters of the backlight, such as power consumption, brightness, color, and the like, and also determines the characteristics of the backlight, such as the use condition, the service life, and the like, and the light transmittance of the backlight determines the brightness, the power consumption, and the service life of the backlight.

The existing backlight source has the following defects: 1. overall structure is simple, and the light transmissivity is relatively poor, and the loss among the light conduction process is higher, 2, protective capacities are low, and inconvenient dispel the heat. To this end, we propose a high-transmittance type backlight.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a high-transmittance backlight source which can effectively solve the problems in the background art.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the high-transmittance backlight source comprises a bottom plate, a backlight source, a protective frame and a brightness enhancement film, wherein the backlight source is glued on the top of the bottom plate and consists of a light guide plate, an LED light source, a lower reflection film, a side reflection film, a lower diffusion film, a brightness enhancement film and an upper diffusion film, and the protective frame is fixed on the outer side of the top of the bottom plate through bolts.

Furthermore, a lower diffusion film is glued to the top of the light guide plate, an upper diffusion film is glued to the top of the lower diffusion film, a brightness enhancement film is clamped between the upper diffusion film and the lower diffusion film, LED light sources are arranged at two ends of the light guide plate, side reflection films are glued to the outer sides of the LED light sources, and a lower reflection film is glued to the bottom of the light guide plate; the lower reflecting film and the side reflecting film can reflect light rays, so that the loss of the light rays is reduced.

Furthermore, the protective frame is located on the outer side of the backlight source, a light shading strip is glued between the protective frame and the backlight source, and the light shading strip is made of graphene materials.

Furthermore, a reserved hole is formed in the outer side of the protective frame, and a dustproof net is embedded in the reserved hole.

Further, the brightness enhancement sheet is made of a prism sheet.

Compared with the prior art, the utility model has the following beneficial effects:

1. through setting up reflectance coating, side reflectance coating and the piece that adds lustre to, LED light source work gives out bright light and shines into the light guide plate in, through the outside illumination of backlight, lower diffusion coating and last diffusion coating can be to the light that shines in the backlight and spread, improve light luminance, the piece that adds lustre to that the prism piece was made can improve light luminance through refraction, reflection, the lower reflectance coating of light guide plate bottom and the side reflectance coating in the LED light source outside can reflect light, reduce the loss of light.

2. Protect frame, light-shading strip and preformed hole through setting up, protect the frame and can protect the backlight edge, protect the light-shading strip between frame and the backlight, make by graphite alkene material, can play the shading effect, prevent that light from shining away from the backlight edge, have stronger heat conductivity simultaneously, can absorb the heat on the backlight, protect the frame outside and seted up a plurality of preformed holes, make things convenient for the light-shading strip to dispel the heat, and the embedded dust screen that is equipped with in preformed hole can prevent that the dust from getting into.

Drawings

Fig. 1 is a schematic view of an overall structure of a high-transmittance backlight according to the present invention.

Fig. 2 is a schematic view of an internal structure of a protective frame of a high-transmittance backlight source according to the present invention.

Fig. 3 is a schematic view of a backlight structure of a high-transmittance backlight according to the present invention.

In the figure: 1. a base plate; 2. a backlight source; 3. protecting the frame; 4. a light guide plate; 5. an LED light source; 6. a lower reflective film; 7. a side reflective film; 8. a lower diffusion film; 9. a brightness enhancement film; 10. An upper diffusion film; 11. a shading strip; 12. reserving a hole; 13. a dust screen.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

As shown in fig. 1-3, a high-transmittance backlight includes a bottom plate 1, a backlight 2, a protective frame 3 and a brightness enhancement film 9, the backlight 2 is glued on the top of the bottom plate 1, the backlight 2 is composed of a light guide plate 4, an LED light source 5, a lower reflection film 6, a side reflection film 7, a lower diffusion film 8, a brightness enhancement film 9 and an upper diffusion film 10, and the protective frame 3 is fixed on the outer side of the top of the bottom plate 1 through bolts.

The top of the light guide plate 4 is glued with a lower diffusion film 8, the top of the lower diffusion film 8 is glued with an upper diffusion film 10, a brightness enhancement film 9 is clamped between the upper diffusion film 10 and the lower diffusion film 8, the two ends of the light guide plate 4 are provided with LED light sources 5, the outer sides of the LED light sources 5 are glued with side reflection films 7, and the bottom of the light guide plate 4 is glued with a lower reflection film 6.

In this embodiment, as shown in fig. 3, the LED light source 5 emits bright light to irradiate into the light guide plate 4, and the light is irradiated from the backlight source 2, the lower diffusion film 8 and the upper diffusion film 10 can diffuse the light irradiated from the backlight source 2, so as to improve the brightness of the light, and the lower reflection film 6 at the bottom of the light guide plate 4 and the side reflection film 7 at the outer side of the LED light source 5 can reflect the light, so that the loss of the light is reduced.

The protective frame 3 is located on the outer side of the backlight source 2, a light shielding strip 11 is glued between the protective frame 3 and the backlight source 2, and the light shielding strip 11 is made of graphene materials.

In this embodiment, as shown in fig. 2, the light-shielding strip 11 is made of a graphene material, and can play a role in shielding light, so as to prevent light from being emitted from the edge of the backlight 2, and meanwhile, has strong thermal conductivity, and can absorb heat on the backlight 2.

Wherein, protect the frame 3 outside and seted up preformed hole 12, preformed hole 12 is inside to be inlayed and is equipped with dust screen 13.

In this embodiment, as shown in fig. 2, the preformed hole 12 facilitates the heat dissipation of the light-shielding strip 11, and the dust-proof net 13 is embedded in the preformed hole 12 to prevent dust from entering.

Wherein, the brightness enhancement film 9 is made of prism sheet.

In this embodiment, as shown in fig. 3, the brightness of the light can be improved by refraction and reflection of the brightness enhancement film 9 made of the prism sheet.

It should be noted that, the present invention is a high-transmittance backlight source, when working, a person connects the LED light source 5 with an external power source by using a power line, the LED light source 5 emits bright light to irradiate into the light guide plate 4, the light is irradiated outward by the backlight source 2, the light irradiated in the backlight source 2 can be diffused by the lower diffusion film 8 and the upper diffusion film 10 to improve the light brightness, the brightness of the light can be improved by the brightness enhancement film 9 made of prism sheet through refraction and reflection, the light can be reflected by the lower reflection film 6 at the bottom of the light guide plate 4 and the side reflection film 7 at the outer side of the LED light source 5 to reduce the light loss, the edge of the backlight source 2 can be protected by the protective frame 3, the shading strip 11 between the protective frame 3 and the backlight source 2 is made of graphene material to play a role of shading, so as to prevent the light from irradiating from the edge of the backlight source 2, and has strong thermal conductivity, can absorb the heat on the backlight 2, protect the frame 3 outside and seted up a plurality of preformed holes 12, make things convenient for light-shading strip 11 to dispel the heat, and the embedded dust screen 13 that is equipped with in preformed hole 12 can prevent that the dust from getting into.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a high-transmission type backlight, includes bottom plate (1), backlight (2), protects frame (3), and brightness enhancement piece (9), its characterized in that: the LED backlight module is characterized in that the top of the bottom plate (1) is glued with a backlight source (2), the backlight source (2) is composed of a light guide plate (4), an LED light source (5), a lower reflecting film (6), a side reflecting film (7), a lower diffusion film (8), a brightness enhancement film (9) and an upper diffusion film (10), and the outer side of the top of the bottom plate (1) is fixed with a protective frame (3) through bolts.

2. A high-transmittance backlight according to claim 1, wherein: diffusion barrier (8) down have been glued at light guide plate (4) top, diffusion barrier (8) top is glued down has last diffusion barrier (10), go up diffusion barrier (10) and down the centre gripping have brightness enhancement piece (9) between diffusion barrier (8), light guide plate (4) both ends are provided with LED light source (5), LED light source (5) outside is glued there is side reflectance coating (7), light guide plate (4) bottom is glued down reflectance coating (6).

3. A high-transmittance backlight according to claim 1, wherein: the protective frame (3) is located on the outer side of the backlight source (2), a light shielding strip (11) is glued between the protective frame (3) and the backlight source (2), and the light shielding strip (11) is made of graphene materials.

4. A high-transmittance backlight according to claim 1, wherein: the protective frame (3) is provided with a preformed hole (12) on the outer side, and a dustproof net (13) is embedded in the preformed hole (12).

5. A high-transmittance backlight according to claim 1, wherein: the brightness enhancement sheet (9) is made of a prism sheet.