CN201421001Y

CN201421001Y - Side-entering backlight module

Info

Publication number: CN201421001Y
Application number: CN200920147746XU
Authority: CN
Inventors: 林志雄; 陈皆兴; 张富雄
Original assignee: FUXIANG INDUSTRIAL Co Ltd
Current assignee: FUXIANG INDUSTRIAL Co Ltd; Forhouse Corp
Priority date: 2009-04-13
Filing date: 2009-04-13
Publication date: 2010-03-10
Anticipated expiration: 2019-04-13

Abstract

The utility model relates to a side-entering backlight module, which comprises a module frame. A light guiding plate mounted inside the module frame is provided with a light entering surface, a lightemitting surface, a bottom surface and a light source, and the light source is surrounded by a lampshade which faces the light entering surface of the light guiding plate and is made of flexible materials. The backlight module is characterized in that the lampshade has at least one part overlapped with the light emitting surface and the bottom surface of the light guiding plate; a filling component disposed between one inner side surface of the module frame and the lampshade is contacted with the module frame and the lampshade, the lampshade is pressed to be adhered on the light guiding plate.Accordingly, the backlight module can ensure the lampshade to be really pressed and adhered on the light guiding plate, thereby solving the problems of leaking light, affecting light entering efficiency and the like.

Description

The side entrance back module

Technical field

The utility model is relevant with LCD, is meant a kind of side entrance back module that can avoid the lampshade distortion especially.

Background technology

General LCD mainly is made up of a liquid crystal panel and a module backlight, and wherein liquid crystal panel itself is not luminous, and the light source of panel is provided by module backlight.Known backlight source module can be divided into straight-down negative (direct-light) and two kinds of side entering types (side-light).

As shown in Figure 1, be a kind of side entrance back module 40, comprise a upper frame 42 and a base plate 44, be equiped with a LGP 46 between upper frame 42 and base plate 44, its end face then is equiped with some bloomings 48 (for example: diffusion barrier, brightness enhancement film etc.).Be equiped with a fluorescent tube 50 and a lampshade 52 in LGP 46 1 sides.Fluorescent tube 50 provides light to enter LGP 46, and LGP 46 after passing these bloomings 48, forms a uniform surface light source with upwards refraction of light.Lampshade 52 can reflect the light of fluorescent tube 50, makes it enter LGP 46, goes into optical efficiency (enter efficiency) with what light was provided.

Early stage lampshade 52 is to make with metal, after being bent into reservation shape, is installed in the side of LGP 46.Find that in practical operation lampshade 52 has light leakage phenomena to take place with the adjoiner of LGP 46.For addressing this problem, prior art is the adjoiner that a shading rubber belt 54 is attached to lampshade 52 and LGP 46.

The development trend of backlight group is that the lampshade of portioned product is made with flexible materials such as paper or plastics at present.Because the made lampshade of this kind flexible material can produce distortion after meeting heat, causes shading rubber belt forfeiture effect, so that the backlight group has light leakage phenomena, and reduced the optical efficiency of going into that light source enters LGP.

Summary of the invention

At the problems referred to above, main purpose of the present utility model is to provide a kind of side entrance back module, and it can guarantee that still lampshade and LGP overlay really under the situation of lampshade distortion, and then avoids light leak to go into problems such as optical efficiency with influence.

For achieving the above object, a kind of side entrance back module provided by the utility model, it comprises: a module framework, wherein be equiped with a LGP, described LGP has an incidence surface, an exiting surface and a bottom surface, a light source, lampshade in the face of the incidence surface of described LGP and is made with soft material surrounds described light source; It is characterized in that: it is overlapping with the exiting surface and the bottom surface of described LGP that described lampshade has at least one part; One filling member is arranged between the medial surface and described lampshade of described module framework, and contacts described module framework and described lampshade, and the described lampshade of pressing overlays on described LGP it.

The quantity of described filling member is two, and one of them is positioned at the upside of described lampshade, and another is positioned at the downside of described lampshade.

Described filling member is a strip, and is general isometric with described lampshade.

Described filling member has some sections that are provided with preset space length.

Described filling member sticks on described module framework with adhesive agent.

Described filling member grows for direct medial surface by described module framework.

Another technical scheme provided by the utility model is: a kind of side entrance back module, it comprises: a module framework, wherein be equiped with a LGP, described LGP has an incidence surface, an exiting surface and a bottom surface, a light source, lampshade in the face of the incidence surface of described LGP and is made with soft material surrounds described light source; It is characterized in that: it is overlapping with described LGP that described lampshade has two parts; And two filling members, be arranged between the upside medial surface of the upside of described lampshade and described module framework and between the downside medial surface of the downside of described lampshade and described module framework, the described lampshade of pressing overlays on described LGP it.

Described filling member is directly grown by the medial surface of described module framework.

Adopt technique scheme, the utility model closely is pressed against on the LGP it with filling member elasticity pressing lampshade, can overcome the lampshade distortion and the light leak of generation and the problem that optical efficiency is gone in reduction, and filling member can be strengthened the chucking power of lampshade clamping light guide board, the polarization of increase lampshade.

Description of drawings

Fig. 1 is a partial sectional view of commonly using the side entrance back module;

Fig. 2 is the partial sectional view of the utility model one preferred embodiment;

Fig. 3 is the schematic diagram of the utility model filling member;

Fig. 4 is the schematic diagram of the another kind of filling member of the utility model.

The specific embodiment

In order to describe structure of the present utility model, characteristics and effect in detail, existing following preferred embodiment of act and conjunction with figs. are described as follows.

As shown in Figure 2, the side entrance back module that provided of the utility model one preferred embodiment includes:

One module framework 10 is made up of a upper frame 12 and a base plate 14, wherein has a window 16 on the upper frame 12.

One LGP 18 is arranged in the module framework 10, has an incidence surface 20, an exiting surface 22 and a bottom surface 24.Exiting surface 22 is equiped with some bloomings 26 (for example: diffusion barrier, brightness enhancement film etc.) in the face of upper frame 12 on it.Bottom surface 24 is positioned at the opposition side of exiting surface 22, and it is provided with a patterned layer 28, so that light is reflected to exiting surface 22.Incidence surface 20 is positioned at a side of LGP 18.

One light source 30 is arranged in the module framework 10, in the face of the incidence surface 20 of LGP 18.In the present embodiment, light source 30 be a CCFL (Cold Cathode Fluorescent Lamp, CCFL), in fact also have two utmost point illuminators (Light Emitting Diodes, LEDs) or other suitable light-emitting device selective.

One lampshade 32, it is made with paper, plastics or other flexible material.Lampshade 32 is bent into U-shaped or ㄇ shape, is coating light source 30.It is overlapping with bottom surface 24 that two outer ends of lampshade 32 respectively have a part of exiting surface 22 with LGP 18.

The filling member 34 of two one-tenth strips is arranged between the downside of the upside of upper frame 12 and lampshade 32 and base plate 14 and lampshade 32.Two filling members 34 are made to have flexual material, for example: rubber, expanded material etc.But two filling members, 34 elasticity pressing lampshades 32 make it overlay on the exiting surface 22 and bottom surface 24 of LGP 18 problem that optical efficiency is gone in light leak that produces to overcome the lampshade distortion and reduction.

Two filling members 34 can be attached on upper frame 12 and the base plate 14 with adhesive agent, or utilize the mode that penetrates that filling member 34 is directly grown by the medial surfaces of upper frame 12.

As shown in Figure 3, filling member 34 is strip, and in fact, the filling member 34 also section of available some weak points is provided with (as shown in Figure 4) in the mode of a preset space length at interval.In addition, also can be only the filling member (not shown) be set, allows the opposite side of lampshade 32 directly overlay (not shown) on module framework 10 in a side of lampshade 32.

The utlity model has following advantage:

1, filling member elasticity pressing lampshade closely is pressed against on the LGP it, so can overcome lampshade distortion and The light leak that produces and reduction enter the problem of optical efficiency.

2, generally speaking, upper frame is to make with plastic injection, so its bottom surface is not a smooth face. And Behind the filling member of the present utility model contact upper frame, but auto Deformation meeting irregular of upper frame, and with Smooth another side compresses lampshade, and it can closely be overlayed on LGP.

3, the utility model more can avoid module framework and metalwork to produce except improving the light leak problem Scrape bits and enter the product visible area.

4, filling member can be strengthened the chucking power of lampshade clamping light guide board, increases the polarization of lampshade.

Claims

1, a kind of side entrance back module, it comprises: a module framework, wherein be equiped with a LGP, and described LGP has an incidence surface, an exiting surface and a bottom surface, a light source, lampshade in the face of the incidence surface of described LGP and is made with soft material surrounds described light source; It is characterized in that: it is overlapping with the exiting surface and the bottom surface of described LGP that described lampshade has at least one part; One filling member is arranged between the medial surface and described lampshade of described module framework, and contacts described module framework and described lampshade, and the described lampshade of pressing overlays on described LGP it.

2, side entrance back module as claimed in claim 1 is characterized in that: the quantity of described filling member is two, and one of them is positioned at the upside of described lampshade, and another is positioned at the downside of described lampshade.

3, side entrance back module as claimed in claim 1 is characterized in that: described filling member is a strip, and is general isometric with described lampshade.

4, side entrance back module as claimed in claim 1 is characterized in that: described filling member has some sections that are provided with preset space length.

5, side entrance back module as claimed in claim 1, it is characterized in that: described filling member sticks on described module framework with adhesive agent.

6, side entrance back module as claimed in claim 1 is characterized in that: described filling member grows for direct medial surface by described module framework.

7, a kind of side entrance back module, it comprises: a module framework, wherein be equiped with a LGP, and described LGP has an incidence surface, an exiting surface and a bottom surface, a light source, lampshade in the face of the incidence surface of described LGP and is made with soft material surrounds described light source; It is characterized in that: it is overlapping with described LGP that described lampshade has two parts; And two filling members, be arranged between the upside medial surface of the upside of described lampshade and described module framework and between the downside medial surface of the downside of described lampshade and described module framework, the described lampshade of pressing overlays on described LGP it.

8, side entrance back module as claimed in claim 7 is characterized in that: described filling member is a strip, and is general isometric with described lampshade.

9, side entrance back module as claimed in claim 7 is characterized in that: described filling member has some sections that are provided with preset space length.

10, side entrance back module as claimed in claim 7, it is characterized in that: described filling member sticks on described module framework with adhesive agent.

11, side entrance back module as claimed in claim 7, it is characterized in that: described filling member is directly grown by the medial surface of described module framework.