CN201359237Y

CN201359237Y - Backlight module

Info

Publication number: CN201359237Y
Application number: CNU2009201060606U
Authority: CN
Inventors: 李相稙
Original assignee: Beijing BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Beijing BOE Optoelectronics Technology Co Ltd
Priority date: 2009-03-06
Filing date: 2009-03-06
Publication date: 2009-12-09
Anticipated expiration: 2019-03-06

Abstract

The utility model relates to LCD technology, in particular to backlight module of LCD device. The backlight module comprises a light source, a light guide plate and a back panel, wherein the light guide plate is arranged in the back panel, the light source is arranged on one side of both sides of the back panel, the inner side of the back panel is provided with an elastic element which is convex to the light guide plate. The defect of light guide plate due to heat expansion under high temperature and high humidity state is solved; meanwhile, the elastic element is used for supporting the light guide plate to realize the effect of fixing the light guide plate so that the light guide plate is prevented from moving in the frame and the light guide plate is effectively fixed.

Description

Module backlight

Technical field

The utility model relates to backlight technology, particularly relates to the module backlight in the liquid crystal indicator, belongs to field of liquid crystal display.

Background technology

Because of advantages such as liquid crystal indicator has gently, approaches, little power consumptions, modernized information equipments such as notebook computer, mobile phone, personal digital assistant have been widely used in.

The housing that liquid crystal indicator generally includes liquid crystal panel, module backlight and is used for fixing this liquid crystal panel and this module backlight.Module backlight mainly comprises a light source, a LGP and a framework.Wherein, LGP comprises at least one incidence surface, and contiguous this incidence surface of this light source is provided with, and this framework is in order to carry above-mentioned LGP and light source.Can be backboard or mold framework according to different situation said frame.

At present, the material of manufacturing LGP is a resin.LGP material commonly used has polymethyl methacrylate (Polymethyl Methacrylate; Be called for short: PMMA) resin.Resin material be heated or moist state under the characteristic of expansion is arranged.Therefore, LGP can expand under high temperature, high humidity environment.When LGP expands, framework hinder LGP outward direction stretch, make LGP toward the third side to protuberance, be placed on the phenomenon that optical thin film above the LGP also can and then have distortion, thereby cause the demonstration inequality of stereo structure, when facing, can differentiate in the time of serious.

Reserve some gaps in order to address the above problem usually between framework and LGP, even making that LGP expands also not can be toward median rise, thereby it is bad to cause that picture shows.Yet the degree that expands when LGP also can cause bad when surpassing the space of reserving, thereby reduces display effect, and preset clearance makes LGP easily move in frame content between framework and the LGP.For example, just need to reserve bigger gap when designing the module backlight of large-scale panel, LGP is mobile easily especially like this, makes that module backlight is insecure.

The utility model content

The purpose of this utility model provides a kind of module backlight, and this module backlight can absorb the elastic deformation of LGP under high temperature, the high humidity environment during when LGP generation thermal expansion, prevent LGP toward the third side to swelling.

For achieving the above object, the utility model provides a kind of module backlight, comprising: light source, LGP and backboard, described LGP is set in the described backboard, and described light source is arranged on the one or both sides of described backboard; It is characterized in that: the inboard of described backboard is provided with the flexible member that protrudes to described LGP direction.

The utility model also provides a kind of module backlight, comprising: light source, LGP and mold framework, described LGP is set in the described mold framework, and described light source is arranged on the one or both sides of described mold framework; It is characterized in that: the inboard of described mold framework is provided with the flexible member that protrudes to described LGP direction.

The utility model is provided with flexible member in the inboard of backboard that contacts with LGP or mold framework, compare with the method for design gaps in the prior art, not only can solve the bad problem that LGP expands and causes under high temperature, high wet condition, and prop up the effect that LGP can also play lightguide plate fixing with flexible member, prevent that LGP from moving in framework.

Description of drawings

Fig. 1 is the module partial top view backlight of the utility model embodiment one;

Fig. 2 be among Fig. 1 A-A to sectional view;

Fig. 3 is the schematic diagram of the arc flexible member of the utility model embodiment two;

Fig. 4 is the schematic diagram of the waveform flexible member of the utility model embodiment three;

Fig. 5 is the schematic diagram of the latch plate flexible member of the utility model embodiment four;

Fig. 6 is the module partial top view backlight of the utility model embodiment five;

Fig. 7 is the module backlight partial section of the utility model embodiment six.

The specific embodiment

Below by drawings and Examples, the technical solution of the utility model is described in further detail.

Embodiment one

Fig. 1 is the module partial top view backlight of the utility model embodiment one.Fig. 2 be among Fig. 1 A-A to sectional view.As shown in Figure 1 and Figure 2, a kind of module backlight, comprise: light source, LGP 101 and backboard 102, described LGP 101 is set in the described backboard 102, described light source is arranged on the one or both sides of described backboard 102, the inboard of described backboard 102 is provided with the flexible member 103 that protrudes to described LGP 101 directions, and this flexible member 103 is arranged on the side that light source is not set.Wherein, flexible member 103 is trapezoidal shell fragment.

The module backlight of present embodiment, when LGP 101 expanded, flexible member 103 compressions had prevented that LGP 101 past third sides are to protuberance; When LGP 101 shrank, flexible member 103 is resilient again, thus lightguide plate fixing 101 effectively.Like this, module backlight of the present utility model has solved the bad problem of demonstration that LGP expands and causes under high temperature, high wet condition, and props up the effect that LGP can also play lightguide plate fixing with flexible member, has prevented LGP moving in framework.

Embodiment two

Fig. 3 is the schematic diagram of the arc flexible member of the utility model embodiment two.As shown in Figure 3, as another kind of preferred version of the present utility model, flexible member can be the arc spring lamination that protrudes.The module backlight of present embodiment, when LGP 101 expanded, the arc spring lamination compression had prevented that LGP 101 past third sides are to protuberance; When LGP 101 shrank, arc spring lamination is resilient again, thereby has fixed LGP 101 effectively.Like this, module backlight of the present utility model has solved the bad problem of demonstration that LGP expands and causes under high temperature, high wet condition, and props up the effect that LGP can also play lightguide plate fixing with arc spring lamination, has prevented LGP moving in framework.

Embodiment three

Fig. 4 is the schematic diagram of the waveform flexible member of the utility model embodiment three.As shown in Figure 4, as another preferred version of the present utility model, flexible member can be the waveform elastic piece structure that protrudes.The module backlight of present embodiment, when LGP 101 expanded, the compression of waveform shell fragment had prevented that LGP 101 past third sides are to protuberance; When LGP 101 shrank, the waveform shell fragment is resilient again, thereby has fixed LGP 101 effectively.Like this, module backlight of the present utility model has solved the bad problem of demonstration that LGP expands and causes under high temperature, high wet condition, and props up the effect that LGP can also play lightguide plate fixing with the waveform shell fragment, has prevented LGP moving in framework.

Embodiment four

Fig. 5 is the schematic diagram of the latch plate flexible member of the utility model embodiment four.As shown in Figure 5, as another preferred version of the present utility model, flexible member can be a latch plate.The module backlight of present embodiment, when LGP 101 expanded, the latch plate compression had prevented that LGP 101 past third sides are to protuberance; When LGP 101 shrank, latch plate is resilient again, thereby has fixed LGP 101 effectively.Like this, module backlight of the present utility model has solved the bad problem of demonstration that LGP expands and causes under high temperature, high wet condition, and props up the effect that LGP can also play lightguide plate fixing with latch plate, has prevented LGP moving in framework.

Embodiment five

Fig. 6 is the module partial top view backlight of the utility model embodiment five.As shown in Figure 6, as further preferred version of the present utility model, flexible member can be a silica gel sheet 603.Backboard 102 is accommodated LGP 101, and silica gel sheet 603 is arranged on the inboard of backboard 102.The module backlight of present embodiment, when LGP 101 expanded, the compression of silica gel sheet had prevented that LGP 101 past third sides are to protuberance; When LGP 101 shrank, the silica gel sheet is resilient again, thereby has fixed LGP 101 effectively.Like this, module backlight of the present utility model has solved the bad problem of demonstration that LGP expands and causes under high temperature, high wet condition, and props up the effect that LGP can also play lightguide plate fixing with the silica gel sheet, has prevented LGP moving in framework.

Embodiment six

Fig. 7 is the module backlight partial section of the utility model embodiment six.As shown in Figure 7, the utility model also provides a kind of module backlight, comprising: light source, LGP 101, backboard 102, mold framework 701, optical thin film 703.LGP 101 is set in the mold framework 701, light source is arranged on the one or both sides of mold framework 701, optical thin film 703 and liquid crystal panel 702 are set above the LGP 101, and backboard 102 is accommodated LGP 101, mold framework 701, optical thin film 703 and liquid crystal panel 702.The inboard of mold framework 701 also is provided with the flexible member 103 that protrudes to LGP 101 directions, and this flexible member 103 is arranged on the side that light source is not set.Wherein, flexible member 103 is trapezoidal shell fragment.

The module backlight of present embodiment when LGP 101 expands, makes flexible member 103 compressions prevent that LGP 101 past third sides are to protuberance; When LGP 101 shrank, flexible member 103 is resilient again, thus lightguide plate fixing 101 effectively.Like this, the module backlight of present embodiment has solved the bad problem of demonstration that LGP expands and causes under high temperature, high wet condition, and props up the effect that LGP can also play lightguide plate fixing with flexible member, has prevented that LGP from moving in framework.

Flexible member 103 described in the embodiment six can be one of arc spring lamination, trapezoidal shell fragment, waveform shell fragment, latch plate, silica gel sheet or its any combination.

In the above-mentioned various scheme, the elastically-deformable ability of flexible member will be determined according to the weight of actual LGP 101.

It should be noted that at last: above embodiment only in order to the explanation the technical solution of the utility model, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.

Claims

1, a kind of module backlight comprises: light source, LGP and backboard, described LGP is set in the described backboard, and described light source is arranged on the one or both sides of described backboard; It is characterized in that: the inboard of described backboard is provided with the flexible member that protrudes to described LGP direction.

2, module backlight according to claim 1 is characterized in that: described flexible member is located on the side that light source is not set of described backboard.

3, module backlight according to claim 1 is characterized in that: described flexible member is one of arc spring lamination, trapezoidal shell fragment, waveform shell fragment, latch plate, silica gel sheet or its any combination.

4, a kind of module backlight comprises: light source, LGP and mold framework, described LGP is set in the described mold framework, and described light source is arranged on the one or both sides of described mold framework; It is characterized in that: the inboard of described mold framework is provided with the flexible member that protrudes to described LGP direction.

5, module backlight according to claim 4 is characterized in that: described flexible member is located on the side that light source is not set of described mold framework.

6, module backlight according to claim 4 is characterized in that: described flexible member is one of arc spring lamination, trapezoidal shell fragment, waveform shell fragment, latch plate, silica gel sheet or its any combination.