CN201218441Y

CN201218441Y - Backlight module

Info

Publication number: CN201218441Y
Application number: CNU2008200368865U
Authority: CN
Inventors: 李光明; 余俊逸
Original assignee: Radiant Opto Electronics Suzhou Co Ltd
Current assignee: Radiant Opto Electronics Suzhou Co Ltd
Priority date: 2008-05-21
Filing date: 2008-05-21
Publication date: 2009-04-08
Anticipated expiration: 2018-05-21

Abstract

The utility model relates to a backlight module, including frame, the lamp shade of setting in the frame, the light emitting component of setting in the lamp shade and the light guide plate of setting enclosing in the frame, this light guide plate has the play plain noodles that is located the top and at least one income plain noodles that is located the side, income plain noodles and light emitting component be located adjacent position, wherein, the light guide plate has at least one overlap joint portion, this overlap joint portion is protruding for going into plain noodles upper end outside side direction from the periphery on play plain noodles, and in this overlap joint portion stretched into the lamp shade, overlap joint portion is located light emitting component's top, the lamp shade top of lamp shade and the overlap joint of the top frame portion of frame are on overlap joint portion. The backlight module overcomes the defect that the lap joint part between the frame and the light guide plate is too short, and improves the utilization rate of the internal space of the frame.

Description

Module backlight

Technical field

The utility model relates to a kind of module backlight, and is particularly a kind of when liquid crystal panel provides backlight, has the structure design that improves frame space availability ratio and the module backlight that LGP, lampshade and frame are firmly combined.

Background technology

Module backlight is arranged on the back side of liquid crystal panel, in order to provide backlight to liquid crystal panel, makes liquid crystal panel can clearly illustrate its picture.Module backlight of the prior art, as shown in Figure 3, it mainly is equipped with frame (61) in the outer periphery of LGP (60), and in this frame (61), be equiped with lampshade (62), in lampshade (62), be provided with luminescence component (63) (as cold-cathode tube etc.), this luminescence component (63) is adjacent with the incidence surface (601) of LGP (60), whereby, the light of luminescence component (63) emission can be injected from the incidence surface (601) of LGP (60), in LGP (60), constantly go out from exiting surface (602) scattering at its top after the reflection, see through the blooming piece (not shown) that is positioned at exiting surface (602) top again and make the even scattering of light, provide uniform light source to liquid crystal panel.In the structure of above-mentioned module backlight, further combine with LGP (60) for making frame (61), the side of LGP (60) is bonding with the top external end edge of lampshade (62) by two-sided tape (64).

The structure of above-mentioned module backlight, owing to be subjected to the restriction of the specification of LCD, and being arranged at must be at regular intervals between luminescence component in the lampshade and the LGP, therefore, side is under the shaped design on vertical end limit around LGP, the position that overlaps between the lampshade in LGP and the frame is too short and small, receives vibration influence easily and gets loose, so that can't firmly make up between LGP and frame.

Summary of the invention

Technical problem to be solved in the utility model is to overcome the deficiency that overlapping part is too short and small between frame and LGP in the prior art and a kind of module backlight that improves frame space availability ratio function that has is provided.

For solving above technical problem, the utility model is taked following technical scheme:

A kind of module backlight, comprise frame, be arranged on the lampshade in the frame, be arranged on the luminescence component in the lampshade and be arranged on the LGP that encloses in the frame, this LGP has exiting surface that is positioned at the top and the incidence surface that at least one is positioned at side, described incidence surface and luminescence component are positioned at the adjacent position, wherein, LGP has at least one clinch, this clinch protrudes out towards the lateral with respect to the incidence surface upper end from the periphery of exiting surface, and this clinch stretches in the lampshade, overlapping part is in the top of luminescence component, and the top frame portion of the lampshade top of lampshade and frame is overlapped on the clinch.

Because the enforcement of above technical scheme, the utility model compared with prior art has following advantage:

LGP has at least one clinch, upper end with respect to incidence surface protrudes out towards the lateral this clinch from the periphery of exiting surface, LGP is mounted in this frame and encloses, this clinch can stretch in the interior lampshade of frame, and be positioned at the top of luminescence component, under the specification of existing module backlight limits and do not influence under the prerequisite of state of light incident LGP of luminescence component, utilize this clinch to provide the combination of larger area overlap joint to the lampshade top of lampshade and the top frame portion of frame, thereby it is too short and small because of overlap joint between frame and LGP to have overcome module backlight, cause making up unsteady shortcoming, improved the utilization rate of this frame inner space.

Description of drawings

Fig. 1 is a floor map of the present utility model;

Fig. 2 is the floor map of another embodiment of the present utility model;

Fig. 3 is the floor map of module backlight in the prior art;

Wherein:

10, frame; 11, top frame portion; 12, underframe portion; 13, side frame portion; 20, lampshade; 21, lampshade top; 22, lampshade bottom; 23, lampshade sidepiece; 30, luminescence component; 40, LGP; 41, incidence surface; 42, exiting surface; 43, clinch; 44, arc surface; 50, double faced adhesive tape; 60, LGP; 601, incidence surface; 602, exiting surface; 61, frame; 62, lampshade; 63, luminescence component; 64, double faced adhesive tape.

The specific embodiment

As depicted in figs. 1 and 2, the module backlight according to present embodiment mainly comprises frame 10, lampshade 20, luminescence component 30 and LGP 40.

Described frame 10 is for surrounding the framework of square space, comprise the top frame portion 11 that is positioned at the top, the below that is positioned at top frame portion 11 and be separated with the underframe portion 12 of certain distance with 11 in top frame portion and be connected the outboard end of underframe portion 12 and the side frame portion 13 of the outboard end of top frame portion 11, the frame 10 inner inside accommodation spaces of openings that form.The width of described top frame portion 11 is less than the width of underframe portion 12.

Lampshade 20 comprises lampshade top 21, be positioned at the below at lampshade top 21 and the lampshade bottom 22 that is provided with at interval with the lampshade top and the lampshade sidepiece 23 of outboard end that is connected lampshade bottom 22 and lampshade top 21 outboard ends, and lampshade 20 is installed in the accommodation space of frame 10.The corresponding respectively medial surface that supports the top frame portion 11, underframe portion 12 and the side frame portion 13 that are attached to frame 10 of lampshade top 21, lampshade bottom 22 and lampshade sidepiece 23.

Luminescence component 30 comprises at least one light-emitting component, and this light-emitting component can be cold-cathode tube, light emitting diode etc., and luminescence component 30 is installed in lampshade 20 inboards.

LGP 40 comprises at least one incidence surface 41, exiting surface 42 and at least one clinch 43, this incidence surface 41 is positioned at the side of LGP 40, exiting surface 42 is positioned at the end face of LGP 40, and clinch 43 protrudes out towards the lateral with respect to incidence surface 41 upper ends from exiting surface 42 peripheries.41 arc surfaces 44 that form indent of the bottom surface of this clinch 43 and the incidence surface of adjacency, this arc surface 44 can further form coarse surface, makes the light generation scattering that projects this arc surface 44, thereby avoids producing bright line.LGP 40 is arranged on the Nei Weichu of frame 10, its incidence surface 41 is adjacent with this luminescence component 30, and the bottom surface of this LGP 40 is positioned at the top of the lampshade bottom 22 of the underframe portion 12 of this frame 10 and lampshade 20, this clinch 43 stretches into the inside of the lampshade 20 in this frame 10 and the frame 10, and be positioned at the top of luminescence component 30, lampshade top 21 and top frame portion 11 are overlapped on the clinch 43, as shown in Figure 2,21 at this clinch 43 and lampshade top also can be further followed thing with viscose glue or double faced adhesive tape 50 or other and are combined fixing.

Above-mentioned module backlight can be in exiting surface 42 outsides of LGP 40 installing blooming piece (not shown), in the bottom surface of LGP 40 installing reflecting plate (not shown), module backlight is mounted on the back side of liquid crystal panel, is used for backlight required when liquid crystal panel provides controlled displaying picture.

As shown in the above description, design of backlight module of the present utility model, it mainly is under existing specification standard, see through the clinch design that the LGP side protrudes out, make combination stable between LGP and frame, improve in the prior art in the module backlight the too short and small shortcoming of overlapping part between frame and LGP effectively, the module backlight of stronger practicality is provided for LCD.

Claims

1, a kind of module backlight, comprise frame, be arranged on the lampshade in the described frame, be arranged on the luminescence component in the described lampshade and be arranged on the LGP that encloses in the described frame, described LGP has exiting surface that is positioned at end face and the incidence surface that at least one is positioned at side, described incidence surface and described luminescence component are positioned at position adjacent, it is characterized in that: described LGP has at least one clinch, described clinch protrudes out towards the lateral with respect to described incidence surface upper end from the periphery of exiting surface, described clinch stretches into the position of the top of luminescence component in the described lampshade, and the top frame portion of the cover top of described lampshade and frame is overlapped on the described clinch.

2, module backlight according to claim 1 is characterized in that: the arc surface that forms indent between the bottom surface of described clinch and the described incidence surface.

3, module backlight according to claim 2, it is characterized in that: described arc surface has rough surface.

4, according to any described module backlight in the claim 1 to 3, it is characterized in that: bonding between the cover top of described clinch and described lampshade by double faced adhesive tape.