CN203533350U

CN203533350U - Backlight module and display device

Info

Publication number: CN203533350U
Application number: CN201320693849.2U
Authority: CN
Inventors: 孙文波
Original assignee: BOE Technology Group Co Ltd; Hefei BOE Display Lighting Co Ltd
Current assignee: BOE Technology Group Co Ltd; Hefei BOE Display Lighting Co Ltd
Priority date: 2013-11-05
Filing date: 2013-11-05
Publication date: 2014-04-09
Anticipated expiration: 2023-11-05

Abstract

The utility model provides a backlight module. The backlight module comprises a back plate, a lamp strip and a light guide plate. The lamp strip and the light guide plate are fixed on the back plate. The light guide plate is provided with a locating groove, and the upper portion of the lamp strip is embedded in the locating groove. Correspondingly, the utility model further provides a display device of the backlight module. The light guide plate and the lamp strip can be stably fixed and combined, a small gap can be kept between the light inlet side of the light guide plate and the lamp strip, and the luminous efficiency loss is avoided.

Description

Backlight module and display unit

Technical field

The utility model relates to Display Technique field, relates in particular to a kind of backlight module and comprises the display unit of this backlight module.

Background technology

In the backlight module of liquid crystal indicator, LGP and lamp bar need to be combined and fix.The LED(Light Emitting Diode of current small-medium size, light emitting diode) in backlight, because LED has certain angle of divergence, thereby require between LGP light inlet side and lamp bar light-emitting area as zero clearance or only have very little gap, excesssive gap can affect LED luminous efficiency.

Existing LGP normally positions by double faced adhesive tape, yet when being subject to the affecting of the cold and hot variation of temperature, expanding with heat and contract with cold of LGP can have influence on the gap between LED light-emitting area and LGP light inlet side, causes light efficiency loss.

Utility model content

In view of this, the display unit that the purpose of this utility model is to provide a kind of backlight module and comprises this backlight module, makes can keep less gap between LGP light inlet side and LED light-emitting area, has avoided light efficiency loss.

For achieving the above object, the utility model provides a kind of backlight module, and this backlight module comprises backboard, lamp bar and LGP, and described lamp bar and described LGP are fixed on described backboard, on described LGP, be provided with locating slot, in the chimeric described locating slot in top of described lamp bar.

Preferably, the shape of the shape of described locating slot and described lamp bar matches.

Preferably, described lamp bar be shaped as rectangle, described locating slot be shaped as rectangle.

Preferably, the width of described locating slot is larger than the width of described lamp bar.

Preferably, the stand out of described locating slot and described lamp bar is 0.2mm to 0.3mm.

Preferably, be provided with end reflector plate on described backboard, this end reflector plate is reflected back described LGP for the light that described bottom surface of light guide plate is spilt.

Preferably, described backlight module also comprises the blooming piece that is arranged on LGP top

Preferably, described backlight module also comprises framework, and this framework is fastened on the outside of described backboard, so that described LGP is fixed on described backboard.

Correspondingly, the utility model also provides a kind of display unit, and described display unit comprises above-mentioned backlight module provided by the utility model.

Visible, the utility model by arranging locating slot on LGP, when LGP and backboard laminating, lamp bar is entrenched in locating slot, makes can keep less gap between the stable combination of LGP and lamp bar energy and LGP light inlet side and lamp bar, avoided light efficiency loss.In addition, whether the utility model can also there is deviation by inspection lamp bar piece, whether the laminating of lamp bar and backboard is accurate, when lamp bar piece exists the laminating of relatively large deviation or lamp bar and backboard to have relatively large deviation, lamp bar cannot be fitted in the locating slot of LGP, can prevent that like this quality from existing the semi-finished product of defect to flow into follow-up technological process.

Accompanying drawing explanation

Accompanying drawing is to be used to provide further understanding of the present utility model, and forms a part for description, is used from explanation the utility model, but does not form restriction of the present utility model with the specific embodiment one below.In the accompanying drawings:

The backlight module exemplary plot that Fig. 1 provides for the utility model embodiment;

The backlight module that Fig. 2 provides for the utility model embodiment and blooming piece, framework composition exemplary plot.

The backlight module section exemplary plot that Fig. 3 provides for the utility model embodiment.

Description of reference numerals

1-backboard; 2-lamp bar; 3-LGP; Locating slot on 31-LGP; Reflector plate at the bottom of 4-; 5-blooming piece; 6-framework.

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is elaborated.Should be understood that, the specific embodiment described herein only, for description and interpretation the utility model, is not limited to the utility model.

As an aspect of the present utility model, a kind of backlight module is provided, as shown in Figure 1, this backlight module can comprise: backboard 1, lamp bar 2 and LGP 3.Lamp bar 2 and LGP 3 are fixed on backboard 1.Lamp bar 2 can be fitted on the predeterminable area of backboard 1, and lamp bar 2 is for providing light source to LGP.

LGP 3 can be fitted on backboard 1 and make the light-emitting area of the light inlet side next-door neighbour lamp bar 2 of LGP 3.Particularly, on LGP 3, can be provided with locating slot 31, when LGP 3 and backboard 1 are fitted, the top of lamp bar 2 is entrenched in locating slot 31, LGP 3 and lamp bar 2 can firmly be combined, and wherein, the top of lamp bar 2 refer to that lamp bar 2 protrudes from the part of backboard 1.Like this, can be so that keep less gap between the light inlet side of LGP 3 and the light-emitting area of lamp bar 2, avoid the light inlet side of LGP 3 that the effect of expanding with heat and contract with cold due to LGP 3 causes and the excesssive gap between the light-emitting area of lamp bar 2, can effectively prevent light efficiency loss.

Further, for lamp bar 2 can be firmly entrenched in locating slot 31, shape that can locating slot 31 is set to the form fit with lamp bar 2.

Particularly, in actual applications, lamp bar 2 can be set to rectangle, same, locating slot 31 also can be set to rectangle.

Further, the width of locating slot 31 can be larger than the width of lamp bar 2, so that the top of lamp bar 2 can be entrenched in locating slot 31.

Preferably, the stand out of locating slot 31 and lamp bar 2 can be 0.2mm to 0.3mm, can in actual use, locating slot 31 can be held and clearance lamp bar 2 like this, meanwhile, also can guarantee that the gap between the light inlet side of LGP 3 and the light-emitting area of lamp bar 2 is no more than 0.3mm.

Further, the light guide plate mechanism that the utility model provides can also comprise end reflector plate 4, and this end reflector plate 4 can be fitted on backboard 1, for the light spilling from LGP 3 bottom surfaces is reflected back to LGP 3, to increase the service efficiency of light.

Further, as shown in Figure 2, backlight module provided by the utility model can also comprise the blooming piece 5 that is arranged on LGP 3 tops, and blooming piece 5 can be, but not limited to comprise: prismatic lens and diffusion sheet, this blooming piece 5 is for realizing corresponding optical function.

Further, as shown in Figure 2, backlight module provided by the utility model can also comprise framework 6, and this framework 6 can be fastened on the outside of backboard 1, so that LGP 3 is fixed on backboard 1.

Fig. 3 is the profile of backlight module provided by the utility model, as shown in Figure 3, LGP 3 can be arranged on backboard 1, and lamp bar 2 is entrenched in locating slot 31, blooming piece 5 can also be arranged on LGP, and with framework 6, be fastened on the outside of backboard 1, framework 6 can be fastened on the outer of the side of backboard 1, with lightguide plate fixing 3.

Visible, the utility model is by being arranged on the locating slot on LGP, firmly lightguide plate fixing and lamp bar, and can be so that keep less gap between the light inlet side of LGP and the light-emitting area of lamp bar, avoided the LGP light inlet side that causes owing to expanding with heat and contract with cold in prior art and the gap between lamp bar light-emitting area to become excessive.

In actual applications, by above-mentioned backlight module provided by the utility model, can also whether there is the laminating of deviation or lamp bar and backboard whether to have deviation by inspection lamp bar piece.If the deviation of the deviation of lamp bar piece or lamp bar and backboard laminating surpasses certain limit (as 0.3mm), lamp bar cannot be entrenched in the locating slot of LGP, can effectively prevent that like this such piece or laminating from existing the lamp bar semi-finished product of deviation to flow into follow-up technological process.

As another aspect of the present utility model, a kind of display unit is also provided, this display unit comprises above-mentioned backlight module provided by the utility model.

Be understandable that, above embodiment is only used to principle of the present utility model is described and the illustrative embodiments that adopts, yet the utility model is not limited to this.For those skilled in the art, in the situation that not departing from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement are also considered as protection domain of the present utility model.

Claims

1. a backlight module, this backlight module comprises backboard, lamp bar and LGP, described lamp bar and described LGP are fixed on described backboard, it is characterized in that, on described LGP, are provided with locating slot, in the chimeric described locating slot in top of described lamp bar.

2. backlight module according to claim 1, is characterized in that, the shape of the shape of described locating slot and described lamp bar matches.

3. backlight module according to claim 2, is characterized in that, described lamp bar be shaped as rectangle, described locating slot be shaped as rectangle.

4. backlight module according to claim 3, is characterized in that, the width of described locating slot is larger than the width of described lamp bar.

5. backlight module according to claim 4, is characterized in that, the stand out of described locating slot and described lamp bar is 0.2mm to 0.3mm.

6. according to the backlight module described in any one in claim 1 to 5, it is characterized in that, be provided with end reflector plate on described backboard, this end reflector plate is reflected back described LGP for the light that described bottom surface of light guide plate is spilt.

7. according to the backlight module described in any one in claim 1 to 5, it is characterized in that, described backlight module also comprises the blooming piece that is arranged on LGP top

8. according to the backlight module described in any one in claim 1 to 5, it is characterized in that, described backlight module also comprises framework, and this framework is fastened on the outer of the side of described backboard, so that described LGP is fixed on described backboard.

9. a display unit, is characterized in that, described display unit comprises the backlight module described in any one in claim 1 to 8.