CN201477333U

CN201477333U - Side-edge type backlight film fixing structure of LCD module

Info

Publication number: CN201477333U
Application number: CN2009201681298U
Authority: CN
Inventors: 陈子; 周裕桢; 肖伯
Original assignee: CPT Video Wujiang Co Ltd
Current assignee: Shanghai Zhongqiao College; Suzhou Xili Technology Services Limited
Priority date: 2009-08-24
Filing date: 2009-08-24
Publication date: 2010-05-19
Anticipated expiration: 2019-08-24

Abstract

The utility model relates to a side-edge type backlight membrane fixing structure of an LCD module. The LCD module comprises an optical film, a lamp shade, and a plastic frame outside the optical film and the lamp shade, wherein at least one reserved hole is formed on the outermost layer of the optical film; at least one support section is arranged at the front end of the lamp shade; an at least one groove for accommodating the support section is formed on the plastic frame; and the outermost layer of the optical film is sheathed on the support section of the lamp shade through the reserved hole. The support section is a hook-shaped bending unit or an L-shaped bending unit. The upper end of the optical film sheathed on the support section through the reserved hole is effectively supported to share the whole stress of the film, thereby obviating warp deformation of the film or even escaping from the plastic frame.

Description

LCD module side entrance back diaphragm fixed sturcture

Technical field

The relevant LCD of the utility model (LCD), particularly a kind of LCD module side entrance back diaphragm fixed sturcture.

Background technology

LCD is physically removable to be divided into five major parts: liquid crystal panel, module backlight, backlight driver module, show control electronic system and power transfer module.Liquid crystal panel is the key part and component of LCD, is made of the polaroid of orthogonal up and down, colored filter, liquid crystal, array glass etc.With regard to function, liquid crystal panel is a kind of light valve array with color filtration, under backlight illumination, by controlling the light transmission rate of each primary color sub-pixels (light valve), can show various colors and image.The backlight driver module is used for driving the light emitting source of module backlight, and its light that sends strengthens and homogenizing via module backlight, becomes the backlight that liquid crystal panel uses.Show the then responsible picture signal of handling outside input of control electronic system, generally include the optimization of the convergent-divergent and the color of image.An other effect that shows the control electronic system is as man-machine interface, handles every adjustment that the user implements LCD.Power transfer module normally one group of input AC electricity is responsible for converting civil power in the LCD required different direct supplys of various piece to the change-over circuit of many groups output DC.The energy-saving design of LCD can be considered from this five big ingredient.

Wherein, liquid crystal panel itself is not luminous, need next " illuminating " backlight by the back, but the light that sends from backlight in fact at last has only a part seldom can inject human eye, and the overwhelming majority all is lost in the absorption of intermediate member.Generally speaking, the light transmission rate of liquid crystal panel is between 5%-8%, although a lot of LCD seems very bright, in fact their module backlight also must be bright last tens times.

Module backlight mainly is made up of related devices such as light emitting source, reflector plate, blooming piece, light guide plate or diffuser plates.Blooming piece has polytype, and the main effect of tool prism structure blooming piece is a cohesion light; The optical brightening diaphragm of part type and polaroid collocation can reach 1.80 times-1.85 times optical gain with seeing through polarized light reflection, recovery, the utilization again of polaroid.With identical display brightness is prerequisite, by promoting the reflection efficiency of reflector plate, increases the prism diaphragm or uses brightening film sheet, or different optical device is effectively made up, and can significantly improve the effective rate of utilization of light, cuts down the light source energy consumption and reaches 50%.

See also Fig. 1, it is the part-structure synoptic diagram of a vertical solution crystal display.It comprises lampshade 11, light guide plate 12, blooming piece 13 and plastic cement frame 14.Blooming piece 13 comprises diffusion sheet 131, prism 132, following diffusion sheet 133.Because LCD panel itself is not had a characteristics of luminescence, therefore, must add light emitting source on the LCD panel, can clearly reach display effect.And, convert the side light of light emitting source to area source by light guide plate 12, make light more even by blooming piece 13.Plastic cement frame 14 is arranged on the outside of blooming piece 13, plays the effect of protection LCD internal components.

Blooming piece 13 is arranged on the outside of light guide plate 12, the upper and lower sides freedom is chainless, because of not having effective support in top, cause blooming piece 13 to produce the tenesmus phenomenon because of self gravitation, particularly the outermost layer of blooming piece 13 more is easy to generate the tenesmus phenomenon, taste exerts an influence to optics easily, even blooming piece 13 phenomenon that escape comes out from plastic cement frame 14 occurs.In addition, because TFT-LCD develops on the widescreen large scale at present, its blooming piece 13 is also corresponding to become big, but because diaphragm intensity can't increase because of the increase of size accordingly, therefore various buckling deformations can appear in blooming piece when LCD erects, influence the optics taste, even under extreme conditions cause diaphragm escape from plastic cement frame 14, occur bad technical matters thus.

The utility model content

The purpose of this utility model is to provide a kind of LCD module side entrance back diaphragm fixed sturcture, various buckling deformations can appear in blooming piece when LCD erects to solve in the prior art, influence the optics taste, even under extreme conditions causing diaphragm escape from the plastic cement frame, bad technical matters appears thus.

A kind of LCD module side entrance back diaphragm fixed sturcture, described LCD module comprises blooming piece, lampshade and is arranged on described blooming piece and the plastic cement frame in the lampshade outside, it is characterized in that, on the outermost layer diaphragm of blooming piece, at least one preformed hole is set, front end at lampshade is provided with at least one support portion, at least one groove that is used for ccontaining described support portion is set on the plastic cement frame, and the outermost layer diaphragm of described blooming piece is set on the support portion of described lampshade by described preformed hole.

Be set in by preformed hole blooming piece is effectively supported in the position, upper end, thereby share whole diaphragm stress, avoid diaphragm to produce buckling deformation even the bad phenomenon of escape from the plastic cement frame.

Description of drawings

Fig. 1 is the part-structure synoptic diagram of existing vertical solution crystal display;

Fig. 2 is the first embodiment synoptic diagram of the utility model LCD module side entrance back diaphragm fixed sturcture;

Fig. 3 is the second embodiment synoptic diagram of the utility model LCD module side entrance back diaphragm fixed sturcture.

Embodiment

Below in conjunction with accompanying drawing, specify the utility model.

Embodiment one

See also Fig. 2, a kind of LCD module side entrance back diaphragm fixed sturcture, the LCD module comprises light guide plate 22, blooming piece 23, lampshade 21 and is arranged on blooming piece 23 and the plastic cement frame 24 in lampshade 21 outsides.Because compared with prior art, light guide plate 22 is not done any change, so this example just is not described further to this.

At least one preformed hole 25 is set on the outermost layer diaphragm of blooming piece 23.The outermost layer diaphragm can be last diffusion sheet 231.When last diffusion sheet 231 was combined with each other into compound film sheet with prism 232, the outermost layer diaphragm can be compound film sheet.What illustrate in Fig. 2 is that diffusion sheet 231 is an example on being with the outermost layer diaphragm, but not limited thereto.The position of preformed hole 25 can be arranged on the periphery on the outermost layer diaphragm, also can be any position on the diaphragm.

Front end at lampshade 21 is provided with at least one support portion.In this example, the support portion is a hook-type bend unit 211.Preferably, the number of hook-type bend unit 211 is identical with the number of preformed hole 25, and the set position of each hook-type bend unit 211 is corresponding with the position of a preformed hole 25, and corresponding hook-type bend unit 211 can wear preformed hole 25.That is to say that the size of preformed hole 25 should be greater than the hook-type bend unit 211 of correspondence, satisfy it is passed get final product.And, hook-type bend unit 211 can with lampshade 21 for being made into integration, also can separately make.But preferably, select to be made into integration.

At least one groove 241 that is used for ccontaining hook-type bend unit is set on plastic cement frame 24.Need to prove that the number of groove 241 is identical with the number of hook-type bend unit 211.And the shape of groove 241 is corresponding with hook-type bend unit 211, and in this example, groove 241 can be arranged to a rectangle, can ccontaining hook-type bend unit 211 and be positioned at the outermost layer diaphragm portion of preformed hole 25 tops.

The outermost layer diaphragm of blooming piece is set on the hook-type bend unit 211 of lampshade 21 by those preformed holes 25.

In addition, in this example, the outermost layer diaphragm of blooming piece is set on the hook-type bend unit 211 of lampshade 21 by those preformed holes 25, can also will corresponding preformed hole 25 be set on the whole blooming piece, cross those preformed holes 25 whole blooming piece is set on the hook-type bend unit 211 of lampshade 21.

By above-mentioned improvement, blooming piece 23 is effectively supported in the position, upper end, thereby share whole diaphragm stress, avoid diaphragm to produce buckling deformation even the bad phenomenon of escape from plastic cement frame 24.

Embodiment two

See also Fig. 3, compare with a last example, L shaped bend unit 312 is adopted in the support portion of this example.That is to say that lampshade 31 has front end that L-shaped bending shape is set.Correspondingly, at least one groove 342 that is used for ccontaining L shaped bend unit 312 is set on plastic cement frame 34.It can present L shaped shape.

The preformed hole 35 that is provided with on the last diffusion sheet 331, be set on the L shaped bend unit 312 by preformed hole 35 blooming piece is effectively supported in the position, upper end, thereby share whole diaphragm stress, avoid diaphragm to produce buckling deformation even the bad phenomenon of escape from the plastic cement frame.

Though the utility model with embodiment openly as above; right its is not in order to limit the utility model; have in the technical field under any and know the knowledgeable usually; in not breaking away from spirit and scope of the present utility model; when the content that can instruct according to the above embodiments, disclose or hint is done a little change and retouching, so protection domain of the present utility model is as the criterion when looking aforesaid the claim person of defining.

Claims

1. LCD module side entrance back diaphragm fixed sturcture, described LCD module comprises blooming piece, lampshade and is arranged on described blooming piece and the plastic cement frame in the lampshade outside, it is characterized in that, on the outermost layer diaphragm of blooming piece, at least one preformed hole is set, front end at lampshade is provided with at least one support portion, at least one groove that is used for ccontaining described support portion is set on the plastic cement frame, and the outermost layer diaphragm of described blooming piece is set on the support portion of described lampshade by described preformed hole.

2. LCD module side entrance back diaphragm fixed sturcture as claimed in claim 1 is characterized in that described support portion is a hook-type bend unit.

3. LCD module side entrance back diaphragm fixed sturcture as claimed in claim 1 is characterized in that described support portion is L shaped bend unit.

4. LCD module side entrance back diaphragm fixed sturcture as claimed in claim 1 is characterized in that described support portion and lampshade are for being made into integration.

5. LCD module side entrance back diaphragm fixed sturcture as claimed in claim 1 is characterized in that the outermost layer diaphragm of blooming piece is last diffusion sheet.

6. LCD module side entrance back diaphragm fixed sturcture as claimed in claim 1 is characterized in that the outermost layer diaphragm of blooming piece is a compound film sheet.

7. LCD module side entrance back diaphragm fixed sturcture as claimed in claim 1 is characterized in that, on all diaphragms of blooming piece at least one preformed hole is set.