CN207663189U - Novel backlight module - Google Patents

Abstract

The utility model discloses a kind of novel backlight modules, including the light guide plate and optical film group being cascading from the bottom up, and wherein the upper surface of light guide plate is light-emitting surface, and at least one side of light guide plate is incidence surface；Optical film group includes the diffusion barrier being cascading from the bottom up on light guide plate light-emitting surface, lower bright enhancement film and upper bright enhancement film；It is fixedly provided with photomask above optical film group；Incidence surface, the backlight module of corresponding light guide plate are additionally provided with luminescence component, diffusion barrier extends to form the first extension towards luminescence component side, first extension is equipped with secret note, the two-sided of secret note has viscosity, the lower face of secret note and the first extension are adhesively fixed diffusion barrier, the upper surface of secret note is adhesively fixed with photomask, the both ends of lower bright enhancement film towards secret note side each extend over to form clamping portion, secret note is avoided being arranged in the position of clamping portion, clamping portion is adhesively fixed with photomask, realizes the fixation of lower bright enhancement film.

Description

Novel backlight module

Technical field

The utility model is related to back light source technique fields, relate more specifically to novel backlight module.

Background technology

It please refers to Fig.1, Fig. 2, the backlight of small-medium size liquid crystal display device（Such as mobile phone）Generally comprise light guide plate 100 With the optical film group 200 in 100 upper surface of light guide plate is set, the side of light guide plate 100 sets several LED light 310, LED light 310 The linear light source sent out be converted into light guide plate 100 after entering from the side of light guide plate 100 equably area source from optical film group 200 project, and the effect of optical film group 200 is to make light more uniformly.

Optical film group 200 generally comprises the diffusion barrier 210 being cascading from the bottom up on light guide plate 100, lower increasing Light film 220 and upper bright enhancement film 230 prevent lamp eye, usually lean on diffusion barrier 210 to improve the display effect of source ends The side of nearly LED light 310 extends a part and is used for placing secret note 400, and the two sides of secret note 400 has viscosity, on one side with diffusion Film 210 is bonded, Nian Jie with the photomask 500 being arranged above backlight module on one side, and photomask 500 is simultaneously by upper bright enhancement film 230 Bonding, therefore diffusion barrier 210 and upper bright enhancement film 230 can be fixed, but lower bright enhancement film 220 does not have due to being arranged in centre There is fixed structure to be then easy displacement and influence optical effect.

Utility model content

In order to solve the deficiencies in the prior art, the utility model provides a kind of the novel of bright enhancement film under effective fixation Backlight module.

The utility model institute technique effect to be achieved is realized by following scheme：A kind of novel backlight module, including from Under the light guide plate that is up cascading and optical film group, the wherein upper surface of light guide plate is light-emitting surface, and light guide plate is at least One side is incidence surface；The optical film group include the diffusion barrier being cascading from the bottom up on light guide plate light-emitting surface, Lower bright enhancement film and upper bright enhancement film；It is fixedly provided with photomask above the optical film group；Incidence surface, the back of the body of corresponding light guide plate Optical mode group is additionally provided with luminescence component, and the diffusion barrier extends to form the first extension towards luminescence component side, and described first prolongs Extending portion is equipped with secret note, and the two-sided of the secret note has viscosity, and the lower face of secret note and the first extension are adhesively fixed diffusion barrier, The upper surface of secret note is adhesively fixed with photomask, and the both ends of lower bright enhancement film towards the secret note side each extend over to form clamping Portion, the secret note are avoided being arranged in the position of clamping portion, and the clamping portion is adhesively fixed with photomask.

Preferably, the luminescence component includes several spaced LED light, and the lamp of LED light is avoided in the clamping portion The setting of mouth position.

Preferably, the clamping portion is the shape from lower bright enhancement film outward from big to small.

Preferably, the line of demarcation between the clamping portion and lower bright enhancement film is the dotted line of punching.

Preferably, the clamping portion is adhesively fixed with photomask by the sticking black double-sided of two-sided tool.

Preferably, the backlight module further includes the reflector plate being arranged in light guide plate lower face.

Preferably, the reflector plate side opposite with secret note, which is folded upward at, extends to form the second extension, and described second Extension is coating the side of light guide plate.

Preferably, second extension upwardly extends at least two spaced second lugs, corresponds to adjacent second Between lug, the lower bright enhancement film extend outwardly first lug, second lug is clamped with first lug.

The utility model has the following advantages：

1, by the way that by lower bright enhancement film, towards the clamping portion that extends to form of secret note, clamping portion is adhesively fixed with photomask, in turn Realize the fixation of lower bright enhancement film；

2, by the way that clamping portion is formed shape from lower bright enhancement film outward from big to small, can before not influencing lamp effect feelings Increase the bond area with photomask under condition；

3, by the way that by the dotted line that the line of demarcation between clamping portion and lower bright enhancement film is punching, the dotted line can reduce clamping portion Stiffening property, be more advantageous to being adhesively fixed for clamping portion and photomask.

Description of the drawings

Fig. 1 is the planar structure schematic diagram of novel backlight module in the utility model；

Fig. 2 is the schematic cross-sectional view at A-A in Fig. 1；

Fig. 3 is that novel backlight module removes the planar structure that secret note and lower bright enhancement film are shown after photomask in the utility model Schematic diagram 1；

Fig. 4 is that novel backlight module removes the planar structure that secret note and lower bright enhancement film are shown after photomask in the utility model Schematic diagram 2；

Fig. 5 is to show the clamping portion schematic cross-sectional view Nian Jie with photomask at B-B in Fig. 4；

Fig. 6 is the further improved planar structure schematic diagram of Fig. 4；

Fig. 7 is to show that clamping portion can increase the planar structure schematic diagram of bond area in Fig. 4；

Fig. 8 is the stereoscopic schematic diagram that reflector plate and the clamping of lower bright enhancement film are shown in the utility model.

Specific implementation mode

The utility model is described in detail with reference to the accompanying drawings and examples, the examples of the embodiments are in attached drawing In show, in which the same or similar labels are throughly indicated same or similar elements or with the same or similar functions Element.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to for explaining the utility model, and cannot understand For limitations of the present invention.

In the description of the present invention, it should be understood that term " length ", " width ", "upper", "lower", " preceding ", The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" be based on Orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than instruction or dark Show that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as pair The limitation of the utility model.

In addition, term " first ", " second ", " third " are used for description purposes only, it is not understood to indicate or imply phase To importance or implicitly indicate the quantity of indicated technical characteristic." first ", " second ", " third " are defined as a result, Feature can explicitly or implicitly include one or more this feature." multiple " contain in the description of the present invention, Justice is two or more, unless otherwise specifically defined.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu Calmly ", the terms such as " setting " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral； It can be mechanical connection, can also be electrical connection；It can be directly connected, can also may be used also indirectly connected through an intermediary To be the interaction relationship of connection or two elements inside two elements.For the ordinary skill in the art, The concrete meaning of above-mentioned term in the present invention can be understood as the case may be.

As shown in Figure 1, Figure 2, the utility model embodiment provides a kind of backlight module, which is particularly suitable for Small-medium size liquid crystal display, such as mobile phone.The backlight module includes 100 He of light guide plate being cascading from the bottom up Optical film group 200, the wherein upper surface of light guide plate 100 are light-emitting surface, and at least one side of light guide plate 100 is incidence surface.

The optical film group 200 includes at least the diffusion being cascading from the bottom up on 100 light-emitting surface of light guide plate Film 210, lower bright enhancement film 220 and upper bright enhancement film 230；The top of the optical film group 200 is fixedly provided with photomask 500, the screening Light film 500 limits the region of display to cover the light of backlight module periphery.The lower face of the photomask 500 and upper increasing The upper surface of light film 230 is locally adhesively fixed, to realize the positioning of upper bright enhancement film 230.

The backlight module further includes the luminescence component being arranged in 100 incidence surface of light guide plate, the linear light that luminescence component is sent out Source is converted into area source in light guide plate 100 after the injection of the incidence surface of light guide plate 100 and is equably penetrated from optical film group 200 Go out.Wherein luminescence component includes several spaced LED light 310 and the wiring board 320 that is arranged in LED light 310.

The diffusion barrier 210 extends to form the first extension 211, first extension 211 towards luminescence component side Be equipped with secret note 400, the secret note 400 has and prevents from being formed before lamp lamp eye phenomenon, and the secret note 400 it is two-sided have it is viscous Property, the lower face of secret note 400 and the first extension 211 be adhesively fixed diffusion barrier 210, upper surface and the photomask 500 of secret note 400 It is adhesively fixed.Specifically, the secret note 400 is made by the sticking black foam of two-sided tool or by black PET materials.

Diffusion barrier 210 in optical film group described in the utility model 200 can be by Nian Jie solid with upper bright enhancement film 230 It is fixed, and lower bright enhancement film 220 is folded between diffusion barrier 210 and upper bright enhancement film 230 due to not having fixed structure to will produce displacement.

As shown in figure 3, the utility model proposes the both ends by lower bright enhancement film 220 towards 400 side of secret note to each extend over shape At clamping portion 221, the secret note 400 is avoided being arranged in the position of clamping portion 221, and the clamping portion 221 is Nian Jie with photomask 500 It is fixed, and then realize the fixation of lower bright enhancement film 220.

As shown in Figure 4, Figure 5, as a further improvement, the socket position of LED light, the card are avoided in the clamping portion 221 Socket part 221 is the shape from lower bright enhancement film 220 outward from big to small,（Right-angled trapezium shape as shown in the figure to stand upside down, but it is unlimited In this）, can increase in the case of effect before not influencing lamp and bond area (the first extension shown in Fig. 7 of photomask 400 In shaded area be increased area).Because if width range of the clamping portion 221 close to LED light side enters LED light Socket in, it may appear that the phenomenon that lamp eye, influence optical effect.

As shown in fig. 6, as a further improvement, the line of demarcation between the clamping portion 221 and lower bright enhancement film 220 is punching Dotted line, the dotted line can reduce the stiffening property of clamping portion 221, be more advantageous to being adhesively fixed for clamping portion 221 and photomask 500.

Further, the clamping portion 221 is Nian Jie solid by the sticking black double-sided of two-sided tool viscous 700 with photomask It is fixed.

Backlight module described in the utility model further includes the reflector plate 600 being arranged in 100 lower face of light guide plate, described anti- Piece 600 is penetrated to make the light for being incident to 100 lower face of light guide plate be reflected back in light guide plate 100, improves light utilization.

Backlight module described in the utility model further includes backboard and is fixed in the center of backboard periphery, and the backboard is in For the accommodation space that frame is formed to accommodate fixation reflex piece 600, light guide plate 100 and optical film group 200, wherein wiring board 320 is viscous It is sticked and sets on light guide plate 100 and center, photomask 500 is Nian Jie with the upper surface of center.

As shown in figure 8, as a further improvement, the side opposite with secret note 400 of the reflector plate 600 is folded upward at extension Form the second extension 610, second extension 610 is coating the side of light guide plate 100.Second extension 610 At least two spaced second lugs 611 are upwardly extended, between corresponding adjacent second lug 611, the lower bright enhancement film 220 The first lug that extends outwardly 222, second lug 611 are clamped with first lug 222 to prevent lower bright enhancement film 220 far from secret note 400 one end are subjected to displacement, and further enhance the fixed effect of lower bright enhancement film 220.

When the optical film group 200 further includes being arranged between diffusion barrier 210 and upper bright enhancement film 230 in the utility model It when other optical films, can equally be fixed using fixed structure described above, the particular number of optical film group 200 is not limited It is fixed.

The structure of fixed lower bright enhancement film 220 additionally occupies the excessive lateral sky of backlight module due to no in the utility model Between, be conducive to the narrow sideization development of backlight module, meet the technology trends of product.

Finally, it should be noted that above example be only to illustrate the embodiment of the present invention technical solution rather than to its into Row limitation, although the embodiment of the present invention is described in detail with reference to preferred embodiment, those skilled in the art It should be understood that the technical solution of the embodiment of the present invention can be still modified or replaced equivalently, and these are changed or wait The range of modified technical solution disengaging technical solution of the embodiment of the present invention cannot also be made with replacement.

Claims (8)

1. novel backlight module, including the light guide plate and optical film group that are cascading from the bottom up, wherein light guide plate is upper End face is light-emitting surface, and at least one side of light guide plate is incidence surface；The optical film group includes being cascading from the bottom up Diffusion barrier, lower bright enhancement film on light guide plate light-emitting surface and upper bright enhancement film；It is fixedly provided with photomask above the optical film group； Incidence surface, the backlight module of corresponding light guide plate are additionally provided with luminescence component, which is characterized in that the luminous group of diffusion barrier direction Part side extends to form the first extension, and first extension is equipped with secret note, and the two-sided of the secret note has viscosity, secret note Lower face and the first extension be adhesively fixed diffusion barrier, upper surface and the photomask of secret note are adhesively fixed, the lower bright enhancement film It each extends over to form clamping portion towards the both ends of secret note side, the secret note is avoided being arranged in the position of clamping portion, the clamping Portion is adhesively fixed with photomask.

2. novel backlight module as described in claim 1, which is characterized in that the luminescence component includes the setting of several intervals LED light, the clamping portion avoid LED light socket position setting.

3. novel backlight module as described in claim 1, which is characterized in that the clamping portion is from lower bright enhancement film outward from big To small shape.

4. novel backlight module as described in claim 1, which is characterized in that the boundary between the clamping portion and lower bright enhancement film Line is the dotted line of punching.

5. novel backlight module as described in claim 1, which is characterized in that the clamping portion has with photomask by two-sided The black double-sided of viscosity is adhesively fixed.

6. novel backlight module as described in claim 1, which is characterized in that the backlight module further includes being arranged in light guide plate The reflector plate of lower face.

7. novel backlight module as claimed in claim 6, which is characterized in that the reflector plate side opposite with secret note is upward Bending extends to form the second extension, and second extension is coating the side of light guide plate.

8. novel backlight module as claimed in claim 7, which is characterized in that second extension upwardly extends at least two Spaced second lug, between corresponding adjacent second lug, the lower bright enhancement film extend outwardly first lug, described second Lug is clamped with first lug.