CN210294766U

CN210294766U - Curved surface type LED backlight structure

Info

Publication number: CN210294766U
Application number: CN201921667518.5U
Authority: CN
Inventors: 杨小云
Original assignee: Nanjing Dihua Photoelectric Co ltd
Current assignee: Nanjing Dihua Photoelectric Co ltd
Priority date: 2019-10-07
Filing date: 2019-10-07
Publication date: 2020-04-10
Anticipated expiration: 2029-10-07

Abstract

The utility model belongs to the technical field of liquid crystal display, especially, be a curved surface type LED backlight structure, which comprises an outer shell body, the inner chamber bottom of shell body supports through the supporting shoe has first reflector plate, the inside of shell body is equipped with the light guide plate, be equipped with the embedded groove on the lateral wall of light guide plate, the inside of embedded groove is inlayed and is equipped with first LED matrix light source, the top of light guide plate is equipped with the bell jar matrix, the below position that the bottom of light guide plate corresponds the bell jar matrix is equipped with second LED matrix light source, the top opening internally mounted of shell body has the optics diaphragm, first reflector plate, light guide plate and optics diaphragm correspond and set up to curved surface type structure. The utility model discloses can provide the LED backlight for curved surface liquid crystal display, application scope is wide, effectively enlarges the light-emitting angle of light source, and luminous efficiency is high, has improved light source diffusion homogenization performance simultaneously, and then has improved the utilization ratio of light source.

Description

Curved surface type LED backlight structure

Technical Field

The utility model relates to a liquid crystal display technical field specifically is a curved surface type LED backlight structure.

Background

A Liquid Crystal Display (LCD) has many advantages such as a thin body, power saving, and no radiation, and is widely used. Most of the existing liquid crystal display devices in the market are backlight liquid crystal display devices, which include a liquid crystal panel and a backlight module (backlight module). The liquid crystal panel has the working principle that liquid crystal molecules are placed in two parallel glass substrates, a plurality of vertical and horizontal fine electric wires are arranged between the two glass substrates, the liquid crystal molecules are controlled to change directions by electrifying or not, and light rays of the backlight module are refracted out to generate pictures. Since the liquid crystal panel does not emit light, the light source provided by the backlight module is needed to normally display the image. The backlight module is divided into a side-in type backlight module and a direct type backlight module according to different incident positions of the light source.

In the direct type backlight module, a backlight source such as a CCFL (Cathode Fluorescent Lamp) or LED (Light Emitting Diode) Light source is disposed behind the liquid crystal panel, and Light is homogenized by a diffuser plate to form a surface Light source for the liquid crystal panel. The side-in backlight module is formed by disposing a backlight source LED Light bar (Lightbar) at the edge of a back plate at the rear side of a liquid crystal panel, wherein Light emitted by the LED Light bar enters a Light guide plate from a Light incident surface at one side of the Light Guide Plate (LGP), is reflected and diffused, then is emitted from a Light emitting surface of the Light guide plate, and then passes through an optical film group to form a surface Light source for the liquid crystal panel.

However, the conventional LED backlight is generally of a planar structure, has a single structure, is limited in application range, and has the disadvantages of poor uniformity of the light source and low utilization rate of the light source.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a curved surface type LED backlight structure has solved traditional LED backlight and generally is planar structure, and single structure, application scope receive the restriction, and the homogenization performance of light source is relatively poor, has the problem of the defect that light source utilization ratio is not high.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a curved surface type LED backlight structure, includes the shell body, the inner chamber bottom of shell body has first reflector plate through the supporting shoe support, the inside of shell body is equipped with the light guide plate, be equipped with the embedded groove on the lateral wall of light guide plate, the inside of embedded groove is inlayed and is equipped with first LED matrix light source, the top of light guide plate is equipped with the bell jar matrix, the below position that the bottom of light guide plate corresponds the bell jar matrix is equipped with second LED matrix light source, the top opening internally mounted of shell body has the optics diaphragm, first reflector plate, light guide plate and optics diaphragm correspond and set up to curved surface type structure, be equipped with the second reflector plate on the inner wall of shell body between corresponding optics diaphragm and the light guide plate.

As an optimized technical scheme of the utility model, the bottom of first LED matrix light source is connected with aluminium base board through the heat conduction glue, be equipped with the installation department that is used for fastening aluminium base board on the inner wall of shell body.

As an optimal technical scheme of the utility model, second LED matrix light source goes out the plain noodles and is equipped with the transparent adhesive layer, second LED matrix light source bonds in the bottom of light guide plate through the transparent adhesive layer.

As an optimal technical scheme of the utility model, optics diaphragm comprises diffuser plate, first diffusion barrier, membrane of adding lustre to and second diffusion barrier, and diffuser plate, first diffusion barrier, membrane of adding lustre to and second diffusion barrier from the bottom up set gradually in the top of light guide plate.

As a preferred technical scheme of the utility model, the quantity of membrane that adds lustre to in the optics diaphragm can be 1-2.

As an optimal technical scheme of the utility model, curved surface type LED backlight structure is used for providing the backlight to curved surface liquid crystal display.

(III) advantageous effects

Compared with the prior art, the utility model provides a curved surface type LED backlight structure possesses following beneficial effect:

this curved surface type LED backlight structure, through with first reflector plate, light guide plate and optics diaphragm correspond and set up to curved surface type structure, can provide the LED backlight for curved surface liquid crystal display, application scope is wide, and simultaneously, setting through first LED matrix light source and second LED matrix light source, adopt the side to go into and directly descend hybrid LED backlight structure, the cooperation is at the bell jar matrix that the light guide plate top set up, be used for the first reflector plate and the second reflector plate of light reflection and be used for the optics diaphragm of light source uniform diffusion, effectively enlarge the light-emitting angle of light source, the light-emitting efficiency is high, light source diffusion homogenization performance has been improved simultaneously, and then the utilization ratio of light source has been improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a light guide plate according to the present invention;

fig. 3 is the connection structure diagram of the curved surface liquid crystal display screen and the outer shell of the utility model.

In the figure: 1. an outer housing; 2. a support block; 3. a first reflective sheet; 4. a light guide plate; 5. a first LED matrix light source; 6. a conical groove matrix; 7. a second LED matrix light source; 8. an optical film; 9. a second reflective sheet; 10. a groove is embedded; 11. an outer frame; 12. a curved liquid crystal display screen; 13. a first card slot; 14. and a second card slot.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides the following technical solutions: the utility model provides a curved surface type LED backlight structure, including shell body 1, the inner chamber bottom of shell body 1 has first reflector plate 3 through supporting shoe 2 supports, the inside of shell body 1 is equipped with light guide plate 4, be equipped with embedded groove 10 on the lateral wall of light guide plate 4, the inside of embedded groove 10 is inlayed and is equipped with first LED matrix light source 5, the top of light guide plate 4 is equipped with bell groove matrix 6, the below position that the bottom of light guide plate 4 corresponds bell groove matrix 6 is equipped with second LED matrix light source 7, the top opening internally mounted of shell body 1 has optical diaphragm 8, first reflector plate 3, light guide plate 4 and optical diaphragm 8 correspond and set up to curved surface type structure, be equipped with second reflector plate 9 on the inner wall of shell body 1 between corresponding optical diaphragm 8 and the light guide plate 4.

In this embodiment, the first reflector 3, the light guide plate 4 and the optical film 8 are correspondingly arranged to be a curved surface structure, in practical application, as shown in fig. 3, the curved surface liquid crystal display 12 can be fixed on the opening end of the outer shell 1 through the outer frame 11, the outer frame 11 is provided with a first clamping groove 13 matched with the opening end of the outer shell 1 and a second clamping groove 14 matched with the port of the curved surface liquid crystal display 12, the curved surface liquid crystal display 12 and the outer frame 11 can be fastened through screws, and the outer frame 11 can be fastened on the outer shell 1 through screws, so that the stability of the structure is ensured.

Specifically, the bottom of the first LED matrix light source 5 is connected to an aluminum substrate through a heat conductive adhesive, and an installation portion for fastening the aluminum substrate is disposed on the inner wall of the outer casing 1.

In this embodiment, through the excellent heat conductivity of the heat conductive adhesive and the aluminum substrate, the heat on the first LED matrix light source 5 can be conducted to the mounting portion, and the heat dissipation efficiency of the light source is improved.

Specifically, the light emitting surface of the second LED matrix light source 7 is provided with a transparent adhesive layer, and the second LED matrix light source 7 is adhered to the bottom of the light guide plate 4 through the transparent adhesive layer.

In this embodiment, the second LED matrix light source 7 is bonded to the bottom of the light guide plate 4 through the transparent adhesive layer, which is beneficial to improving the light emitting efficiency, and meanwhile, the heat generated by bonding to the bottom of the light guide plate 4 is small.

Specifically, the optical film 8 is composed of a diffusion plate, a first diffusion film, a brightness enhancement film, and a second diffusion film, which are sequentially disposed above the light guide plate 4 from bottom to top.

In this embodiment, through the combination setting of first diffusion barrier, membrane of adding lustre to and second diffusion barrier, can carry out even diffusion to the light source, improve front luminance, do benefit to and reach the effect of backlight homogenization.

Specifically, the number of the brightness enhancement films in the optical film 8 may be 1 to 2.

In this embodiment, the optical film 8 mainly functions to condense light and improve front brightness, and the light enhancement effect is achieved by arranging 1 to 2 optical films 8.

Specifically, the curved LED backlight structure is used to provide a backlight to the curved liquid crystal display 12.

The utility model discloses a theory of operation and use flow: when the LED backlight module works, light is emitted from the first LED matrix light source 5 and the second LED matrix light source 7 and enters the light guide plate 4, light is totally reflected at the side edge of the tapered groove matrix 6, the light is linearly transmitted along the two sides of the tapered groove in the light guide plate 4, the light is transmitted towards the direction of the curved surface liquid crystal display screen 12 under the reflection of the first reflector plate 3 and the scattering of the second reflector plate 9, and the light reflected upwards is diffused, brightened and uniformly diffused through the optical membrane 8, so that the light reflected on the curved surface liquid crystal display screen 12 is more uniform, and the purpose of improving the utilization rate of the light source is achieved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a curved surface type LED backlight structure, includes shell body (1), its characterized in that: the bottom of the inner cavity of the outer shell (1) is supported with a first reflection sheet (3) through a supporting block (2), a light guide plate (4) is arranged inside the outer shell (1), an embedded groove (10) is arranged on the side wall of the light guide plate (4), a first LED matrix light source (5) is embedded inside the embedded groove (10), the top of the light guide plate (4) is provided with a conical groove matrix (6), the bottom of the light guide plate (4) is provided with a second LED matrix light source (7) corresponding to the lower position of the conical groove matrix (6), an optical diaphragm (8) is arranged in the top opening of the outer shell (1), the first reflector plate (3), the light guide plate (4) and the optical film (8) are correspondingly arranged into a curved surface type structure, and a second reflector plate (9) is arranged on the inner wall of the outer shell (1) corresponding to the position between the optical diaphragm (8) and the light guide plate (4).

2. The curved LED backlight structure of claim 1, wherein: the bottom of the first LED matrix light source (5) is connected with an aluminum substrate through heat conducting glue, and an installation part used for fastening the aluminum substrate is arranged on the inner wall of the outer shell (1).

3. The curved LED backlight structure of claim 1, wherein: and a light outgoing surface of the second LED matrix light source (7) is provided with a transparent adhesive layer, and the second LED matrix light source (7) is bonded to the bottom of the light guide plate (4) through the transparent adhesive layer.

4. The curved LED backlight structure of claim 1, wherein: the optical film (8) is composed of a diffusion plate, a first diffusion film, a brightness enhancement film and a second diffusion film, and the diffusion plate, the first diffusion film, the brightness enhancement film and the second diffusion film are sequentially arranged above the light guide plate (4) from bottom to top.

5. The curved LED backlight structure of claim 4, wherein: the number of the bright enhancement films in the optical film (8) can be 1-2.

6. The curved LED backlight structure of claim 1, wherein: the curved surface type LED backlight source structure is used for providing backlight sources for the curved surface liquid crystal display screen (12).