CN203258495U

CN203258495U - Backlight module and liquid crystal display device

Info

Publication number: CN203258495U
Application number: CN 201320191323
Authority: CN
Inventors: 周伟; 戴超
Original assignee: Wuhan Tianma Microelectronics Co Ltd
Current assignee: Wuhan Tianma Microelectronics Co Ltd
Priority date: 2013-04-16
Filing date: 2013-04-16
Publication date: 2013-10-30
Anticipated expiration: 2023-04-16

Abstract

The utility model discloses a backlight module and a liquid crystal display device. The backlight module comprises an optical unit and a frame. The frame wraps the optical unit, and comprises a main body and an extending part extending outwards from the edge of the main body. The optical unit is arranged on the main body, and the extending part is bent towards the center of the main body and buckles the optical unit into the frame. According to the backlight module, components in the prior art are simplified, manufacturing procedures are correspondingly simplified, and a product becomes thinner.

Description

Backlight module and liquid crystal indicator

Technical field

The utility model relates to the Display Technique field, relates in particular to a kind of backlight module and liquid crystal indicator.

Background technology

Liquid crystal indicator has been widely used in the every aspect of daily life, and its product design is also towards designer trends light, thin, fashion-orientation.Liquid crystal indicator comprises display panels and backlight module, and wherein backlight module is in order to provide liquid crystal panel to show needed light.Existing backlight module mainly comprises shading rubber belt, upper prismatic lens, lower prismatic lens, diffusion sheet, LGP, reflector plate, glue frame, back of the body frame and these 9 parts of LED-FPC.Yet the manufacturing cost of this backlight module is higher, and wherein glue frame and chase all need in advance die sinking, through steps such as injection moulding and punch formings, have prolonged the product development time-histories; And the parts of backlight module are more, cause structure more complicated, correspondingly increased the volume and weight of backlight module, can't realize the designing requirement that product is lightening.

The utility model content

In view of this, the invention provides a kind of backlight module and liquid crystal indicator, it has effectively been avoided because the restriction of prior art and the one or more problem that defective causes.

Backlight module of the present utility model, comprise optical unit and framework, described framework coats described optical unit, described framework comprises main body and the extension that stretches out and form from the edge of described main body, described optical unit is located on the main body, and described extension is towards the direction bending of described main center and fasten described optical unit in framework.

Liquid crystal indicator of the present utility model, it comprises above-mentioned backlight module.

The utility model provides a kind of backlight module and liquid crystal indicator, and backlight module comprises optical unit and framework, and framework comprises theme and extension.Optical unit is located on the chassis body, and chassis body plays a supportive role to optical unit; Optical unit is fastened in the framework by the framework extension, and extension plays clamping action to optical unit.Therefore, the backlight module that the utility model provides has been simplified the structure of existing backlight module, has saved parts, has correspondingly simplified processing procedure, so that product is more frivolous.

Description of drawings

Fig. 1 is the schematic perspective view of backlight module in the utility model preferred embodiment.

Fig. 2 is the perspective exploded view of optical unit in the utility model preferred embodiment.

Fig. 3 is the top view of the utility model preferred embodiment middle frame.

Fig. 4 is the schematic diagram that optical unit is combined with framework in the utility model preferred embodiment.

Description of reference numerals:

Backlight module-100; Optical unit-20; LGP-22; Diffusion sheet-24; Lower prismatic lens-26; Upper prismatic lens-28; Framework-30; Main body-32; Body inner surface-322; Extension-34; Extension inner surface-342; Extension outer surface-344; Flexible printed circuit board-40; Double faced adhesive tape-A1, A2; Fold line-F.

The specific embodiment

Please refer to Fig. 1, backlight module 100 of the present utility model comprises optical unit 20, framework 30 and flexible printed circuit board 40.

Please refer to Fig. 2, optical unit 20 comprises a plurality of optical model sheets of stacked setting, described blooming piece comprises LGP 22, diffusion sheet 24, lower prismatic lens 26 and upper prismatic lens 28, and their overlay order is: LGP 22, diffusion sheet 24, lower prismatic lens 26 and upper prismatic lens 28.

Please refer to Fig. 3, framework 30 comprises main body 32 and extension 34, and the two is formed in one.

Main body 32 is rectangular flat, and it has inner surface 322 and outer surface (because the view angle, the main body outer surface is not shown in the drawings).Body inner surface 322 is provided with reflectorized material (not illustrating among the figure), and its inner surface 322 is the color that white or silvery white etc. can be reflective.The main body outer surface is provided with light absorbent (not illustrating among the figure), and its outer surface is the color that black etc. can extinction.

Extension 34 has four, and being stretched out respectively by four limits of main body 32 forms.Extension 34 has inner surface 342 and outer surface 344(sees Fig. 4).Extension inner surface 342 is provided with reflectorized material (not illustrating among the figure), and its inner surface 342 is the color that white or silvery white etc. can be reflective.Extension outer surface 344 is provided with light absorbent (not illustrating among the figure), and its outer surface 344 is the color that black etc. can extinction.

Framework 30 is made by resin material.Its thickness is 0.05～0.5mm, and better thickness is 0.1～0.2mm.Reflectorized material and light absorbent are known any material.They are coated on the inside and outside surface of framework equably.Flexible printed circuit board 40 also is known any one.

In conjunction with Fig. 3 to Fig. 4, assembling is during backlight module 100, and first with all parts of optical unit 20: LGP 22, diffusion sheet 24, lower prismatic lens 26 and upper prismatic lens 28 superpose successively, are fixed as one with adhesive tape, are combined as optical unit 20.The intensive oblique line of double faced adhesive tape A1(Fig. 3 place is set in the periphery of chassis body 32 inner surfaces), and at the framework extension the intensive oblique line of double faced adhesive tape A2(Fig. 3 place is set).Optical unit 20 is lain in the inner surface 322 of chassis body 32, and bonding with double faced adhesive tape A1.Then, along fold line F, bending framework extension 34 is so that these four extensions 34 are towards the center position of main body 32, namely towards inner surface 322 bendings of main body 32, until shaded side among double faced adhesive tape A2(Fig. 3 of extension 34 inner surfaces) be close to optical unit 20.Like this, 32 pairs of optical units 20 of chassis body play a supportive role, and 20 clamping actions of 34 pairs of optical units of framework extension are so that optical unit 20 can firmly be combined with framework 30.At last, flexible printed circuit board 40 is assembled in the backlight module 100.

The particular location of double faced adhesive tape A1, A2 can be adjusted according to the actual requirements, is not limited to the position shown in Fig. 3.

During backlight module 100 assembling, be not limited to use adhered by double sided plaster between optical unit 20 and the framework 30, can also buckle structure be set by the relevant position at optical unit 20 and framework 30, realize the combination of optical unit 20 and framework 30.

Backlight module 100 of the present utility model, because chassis body inner surface 322 and extension inner surface 324 are equipped with reflectorized material, so framework 30 can replace the reflector plate in the prior art backlight module, plays the effect of reflector plate.Owing on the chassis body 32 optical unit 20 is set, optical unit is supported, played the effect of back of the body frame in the prior art backlight module.Because framework extension 34 clamping optical units 20 are in framework 30, optical unit 20 and framework 30 are fastened, played the effect of glue frame and shading rubber belt in the prior art backlight module.Therefore, only framework 30 has just replaced reflector plate, the back of the body frame, glue frame and these four parts of shading rubber belt in the prior art backlight module.Backlight module 100 provided by the utility model, it simplifies the structure, and has also correspondingly simplified processing procedure, so product will be more frivolous, meets current designer trends.

Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.

Claims

1. backlight module, it is characterized in that, described backlight module comprises: optical unit and framework, described framework coats described optical unit, described framework comprises main body and the extension that stretches out and form from the edge of described main body, described optical unit is located on the main body, and described extension is towards the direction bending of described main center and fasten described optical unit in framework.

2. backlight module according to claim 1 is characterized in that, described main body has inside and outside surface, and described extension has inside and outside surface.

3. backlight module according to claim 2 is characterized in that, described optical unit is located on the described body inner surface, and described extension is bent to the described optical unit that links closely towards the inner surface of described main body.

4. backlight module according to claim 3 is characterized in that, by glue bond, described extension inner surface is provided with double faced adhesive tape between described extension and the described optical unit.

5. backlight module according to claim 2 is characterized in that, described body inner surface and described extension inner surface are provided with reflectorized material, and described main body outer surface and described extension outer surface are provided with light absorbent.

6. backlight module according to claim 2 is characterized in that, described body inner surface and described extension inner surface are white or silvery white, and described main body outer surface and described extension outer surface are black.

7. backlight module according to claim 1 is characterized in that, described main body is rectangular flat, described extension be located at respectively main body around, be formed in one with described main body.

8. backlight module according to claim 1 is characterized in that, described optical unit comprises a plurality of blooming pieces of stacked setting, and described a plurality of blooming pieces comprise LGP, diffusion sheet, lower prismatic lens and upper prismatic lens.

9. each described backlight module in 9 according to claim 1 is characterized in that the material of described framework is resin, and thickness is 0.05～0.5mm.

10. a liquid crystal indicator comprises such as each described backlight module in the claim 1 to 8.