CN207689803U - A kind of backlight module - Google Patents
A kind of backlight module Download PDFInfo
- Publication number
- CN207689803U CN207689803U CN201820076242.2U CN201820076242U CN207689803U CN 207689803 U CN207689803 U CN 207689803U CN 201820076242 U CN201820076242 U CN 201820076242U CN 207689803 U CN207689803 U CN 207689803U
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- China
- Prior art keywords
- guide plate
- light guide
- secret note
- backlight module
- diffusion barrier
- Prior art date
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- 239000010408 film Substances 0.000 claims abstract description 28
- 239000012788 optical film Substances 0.000 claims abstract description 28
- 238000009792 diffusion process Methods 0.000 claims abstract description 27
- 230000004888 barrier function Effects 0.000 claims abstract description 26
- 238000004020 luminiscence type Methods 0.000 claims abstract description 11
- 230000003287 optical effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Planar Illumination Modules (AREA)
Abstract
The utility model discloses a kind of backlight modules, including the light guide plate being cascading from the bottom up and optical film group, wherein the upper surface of light guide plate is light-emitting surface, the at least one side of light guide plate is incidence surface, and the optical film group includes at least be cascading from the bottom up diffusion barrier, lower bright enhancement film and upper bright enhancement film on light guide plate light-emitting surface；Further include the luminescence component being arranged in light guide plate incidence surface, the diffusion barrier extends outward to form the first extension towards luminescence component side, and first extension is equipped with secret note；The diffusion barrier removes secret note side, black ink layer at least is being arranged on the neighboring of secret note opposite side, is effectively improved vision area bright spot, the effect of bright line.
Description
Technical field
The utility model is related to back light source technique fields, relate more specifically to a kind of backlight module.
Background technology
Along with the development of liquid crystal display industry, liquid crystal display, liquid crystal display die set obtain extensively in mobile phone products
Using.But since liquid crystal itself does not shine, for the splendid colorful picture for allowing user to see that liquid crystal display is presented, liquid crystal
Display screen generally must be all used cooperatively with a light source.Due to the characteristic of liquid crystal, this light source is typically disposed in liquid crystal display
Back, be referred to as backlight module in industry.Backlight module provides one using its internal light guide plate to liquid crystal display panel
Planar light source even, stable, with certain brightness.
It please refers to Fig.1, Fig. 2, small-medium size liquid crystal display device（Such as mobile phone）Backlight module generally comprise light guide plate
100 and 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 linear light sources 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 projects, and the effect of optical film group 200 is to make light more uniformly.Optical film group 200 generally comprises from the bottom up successively
It is stacked diffusion barrier 210, lower bright enhancement film 220 and upper bright enhancement film 230 on light guide plate 100.Due to light guide plate away from LED light compared with
Near-end divides optically focused more, and light-guide edge is caused to be easy to happen optically focused phenomenon, to which uniformity is bad；In addition, lower bright enhancement film by
In being arranged between diffusion barrier and upper bright enhancement film, it is easy to happen offset phenomena, the light extraction for being also easy to influence entire backlight module is equal
Even property.
Utility model content
In order to solve the deficiencies in the prior art, the utility model provides around a kind of light guide plate without bright line, optics
The good backlight module of effect.
The utility model institute technique effect to be achieved is realized by following scheme：A kind of backlight module, including from lower past
On the light guide plate that is cascading and optical film group, the wherein upper surface of light guide plate is light-emitting surface, at least side of light guide plate
Face is incidence surface, the optical film group include at least the diffusion barrier on light guide plate light-emitting surface of being cascading from the bottom up,
Lower bright enhancement film and upper bright enhancement film；Further include the luminescence component being arranged in light guide plate incidence surface, the diffusion barrier is towards luminescence component
Side extends outward to form the first extension, and first extension is equipped with secret note；The diffusion barrier except secret note side,
Black ink layer at least is being set on the neighboring of secret note opposite side.
Preferably, the diffusion barrier except secret note side other three side neighboring on be respectively provided with black ink
Layer.
Preferably, through-hole is opened up on the diffusion barrier, black ink layer is arranged in the neighboring of the through-hole.
Preferably, photomask, the lower face of the photomask and upper bright enhancement film are fixedly provided with above the optical film group
Upper surface be locally adhesively fixed.
Preferably, 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.
Preferably, the side of the secret note towards optical film group opens up positioning groove, and lower bright enhancement film prolongs towards positioning groove
Positioning protrusion is stretched, the positioning protrusion is extended in positioning groove and connected and fixed with positioning groove.
Preferably, the positioning groove is correspondingly arranged between LED light, is avoided with the socket of LED light.
Preferably, the shape of the positioning groove is radial, first notch of the positioning groove close to optical film group side
Less than the second notch far from optical film group side.
The utility model has the following advantages：
1, secret note is arranged by the side similar in diffusion barrier and luminescence component, excess-three side is arranged black ink layer, makes
The light of the surrounding outer ledge of light guide plate is blocked, and improves vision area bright spot, the effect of bright line；
2, by the way that secret note is opened up positioning groove, lower bright enhancement film extends positioning protrusion towards positioning groove, positioning groove with
Positioning protrusion, which connects and fixes, keeps whole optical film group fixed, not will produce displacement, optical effect is good.
Description of the drawings
Fig. 1 is the planar structure schematic diagram of the utility model backlight module；
Fig. 2 is A-A sectional views in Fig. 1；
Fig. 3 is that diffusion barrier pastes secret note and the knot of the embodiment one of black ink layer is arranged in the utility model backlight module
Structure schematic diagram；
Fig. 4 is that diffusion barrier pastes secret note and the knot of the embodiment two of black ink layer is arranged in the utility model backlight module
Structure schematic diagram；
Fig. 5 is that diffusion barrier pastes secret note and the knot of the embodiment three of black ink layer is arranged in the utility model backlight module
Structure schematic diagram；
Fig. 6 is the structural schematic diagram that lower bright enhancement film is connected and fixed with secret note in the utility model backlight module.
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.
Light guide plate 100 generates lamp eye phenomenon in the side where luminescence component in order to prevent, and the diffusion barrier 210 is towards hair
Optical assembly side extends outward to form the first extension 211, and first extension 211 is equipped with secret note 400, and the secret note
400 two-sided has viscosity, and the lower face of secret note 400 and the first extension 211 are adhesively fixed diffusion barrier 210, secret note 400 it is upper
End face is adhesively fixed with photomask 500, and the bright line that secret note 400 blocks the side light-guide edge generates.Specifically, the secret note
400 are made by the sticking black foam of two-sided tool or by black PET materials.
Other sides of light guide plate 100 in order to prevent（In addition to the side where luminescence component）Edge generates light, the expansion
Dissipate film 210 at least with black ink layer 700 is set on the neighboring of 400 opposite side of secret note, such as can be as shown in Figure 3
Only on the neighboring of secret note opposite side be arranged black ink layer 700, can also be as shown in Figure 4 where in addition to secret note
Other three lateral edges of side are respectively provided with black ink layer 700, achieve the effect that improve vision area bright spot, bright line.
As shown in figure 5, when opening up through-hole 212 on the diffusion barrier 210, the neighboring of the through-hole 212 is also provided with
Black ink layer 700 prevents light from being leaked out from through-hole 212 and generating bright line.
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 be folded between diffusion barrier 210 and upper bright enhancement film 230 due to do not have fixed structure will produce displacement into
And influence optical effect.
As shown in fig. 6, the utility model proposes the sides by secret note 400 towards optical film group 200 to open up positioning groove
410, lower bright enhancement film 220 extends positioning protrusion 221 towards positioning groove 410, and the positioning protrusion 221 extends to positioning groove
It is connected and fixed in 410 and by positioning groove 410, the optical film group optical effect after fixing is good.
Specifically, close as shown, the shape of the positioning groove 410 is radial or other clamping shapes
First notch of 200 side of optical film group is less than the second notch far from 200 side of optical film group and is connected and fixed to play
Effect.The shape adaptation of the shape of the positioning protrusion 221 and positioning groove 410 is so as to fixedly closer.The positioning is recessed
Slot 410 is correspondingly arranged between LED light 310, is avoided with the socket of LED light 310, and socket is avoided to generate lamp eye without secret note 400
Phenomenon.
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. a kind of 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, and the optical film group is included at least and stacked gradually from the bottom up
Diffusion barrier, lower bright enhancement film and the upper bright enhancement film being arranged on light guide plate light-emitting surface；It further include the hair being arranged in light guide plate incidence surface
Optical assembly, which is characterized in that the diffusion barrier extends outward to form the first extension towards luminescence component side, and described first prolongs
Extending portion is equipped with secret note；The diffusion barrier is arranged except secret note side, at least on the neighboring of secret note opposite side
Black ink layer.
2. a kind of backlight module as described in claim 1, which is characterized in that in addition the diffusion barrier removes secret note side
It is respectively provided with black ink layer on the neighboring of three sides.
3. a kind of backlight module as described in claim 1, which is characterized in that open up through-hole, the through-hole on the diffusion barrier
Neighboring be arranged black ink layer.
4. a kind of backlight module as described in claim 1, which is characterized in that be fixedly provided with shading above the optical film group
Film, the lower face of the photomask and the upper surface of upper bright enhancement film are locally adhesively fixed.
5. a kind of backlight module as claimed in claim 4, which is characterized in that the two-sided of the secret note has viscosity, secret note
Lower face and the first extension are adhesively fixed diffusion barrier, and upper surface and the photomask of secret note are adhesively fixed.
6. a kind of backlight module as claimed in claim 5, which is characterized in that the side of the secret note towards optical film group opens up
Positioning groove, lower bright enhancement film extend positioning protrusion towards positioning groove, the positioning protrusion extend in positioning groove and with
Positioning groove connects and fixes.
7. a kind of backlight module as claimed in claim 6, which is characterized in that the positioning groove be correspondingly arranged at LED light it
Between, it is avoided with the socket of LED light.
8. a kind of backlight module as claimed in claims 6 or 7, which is characterized in that the shape of the positioning groove be it is radial,
First notch of the positioning groove close to optical film group side is less than the second notch far from optical film group side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820076242.2U CN207689803U (en) | 2018-01-17 | 2018-01-17 | A kind of backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820076242.2U CN207689803U (en) | 2018-01-17 | 2018-01-17 | A kind of backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207689803U true CN207689803U (en) | 2018-08-03 |
Family
ID=62991949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820076242.2U Active CN207689803U (en) | 2018-01-17 | 2018-01-17 | A kind of backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207689803U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111258119A (en) * | 2020-03-24 | 2020-06-09 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display device |
-
2018
- 2018-01-17 CN CN201820076242.2U patent/CN207689803U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111258119A (en) * | 2020-03-24 | 2020-06-09 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display device |
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