CN209418047U - A kind of down straight aphototropism mode set and backlight screen - Google Patents
A kind of down straight aphototropism mode set and backlight screen Download PDFInfo
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- CN209418047U CN209418047U CN201920017646.9U CN201920017646U CN209418047U CN 209418047 U CN209418047 U CN 209418047U CN 201920017646 U CN201920017646 U CN 201920017646U CN 209418047 U CN209418047 U CN 209418047U
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- mode set
- down straight
- optical diaphragm
- aphototropism mode
- straight aphototropism
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Abstract
The utility model discloses a kind of down straight aphototropism mode set and backlight screens, the backlight module includes optical diaphragm, diffuser plate, hardware backboard, plastic middle-frame and the riveting column for fixing this, also there is the fixed film of optical diaphragm, the fixed film includes sequentially connected first part, second part and Part III in a manner of right angle bending；The first part is pasted on optical diaphragm edge and has the arc-shaped notch contacted with the riveting column；The second part is bent downward vertically along the end of optical diaphragm by the edge of the first part and extends to hardware back plate surface；The Part III is pasted on the inside of the right angle folding edge of the hardware backboard, and is sandwiched in the right angle folding edge of hardware backboard and the gap of plastic middle-frame fastening assembly.The backlight module of the utility model can limit diaphragm displacement caused by environmental change due to the effect of the fixation film, guarantee not influenced by diaphragm size variation using the display effect of the backlight screen of the mould group.
Description
Technical field
The utility model relates to optical diaphragm applied technical fields, more particularly, to a kind of down straight aphototropism mode set and backlight
Screen.
Background technique
65 cun or more down straight aphototropism mode sets use the cooperation of hardware backboard, plastic middle-frame, to fix optical diaphragm, limitation
The displacement of optical diaphragm.But with becoming larger for product size, the tolerance of component production and the characteristic showed are more uncontrollable, example
Such as the size of optical diaphragm.Optical diaphragm is affected by environment more sensitive, such as is shown by the variation of temperature and humidity
The change in size come is fairly obvious, will appear the phenomenon that contraction when optical diaphragm is cooled, diaphragm can generate uncontrollable at this time
Displacement；It when optical diaphragm expanded by heating, becomes large-sized, film arch would generally be generated at this time.Therefore, how optical diaphragm is improved
Fixed form reduces the influence of temperature, humidity variation to diaphragm size, is current this field technical problem urgently to be resolved.
Utility model content
The main purpose of the utility model is that proposing that a kind of optical diaphragm that uses fixes film to limit optical diaphragm
The down straight aphototropism mode set and backlight screen of displacement, solve in the prior art diaphragm temperature, humidity variation lead to change in size when
The problem of caused displacement, film arch etc. influence display effect.
The utility model proposes following technical scheme for the above-mentioned purpose:
A kind of down straight aphototropism mode set, including optical diaphragm, diffuser plate, hardware backboard, plastic middle-frame and for by this
Four fixed riveting columns, also have the fixed film of optical diaphragm, and the fixed film of the optical diaphragm includes: in a manner of right angle bending
Sequentially connected first part, second part and Part III；The first part is pasted on optical diaphragm edge and has
The arc-shaped notch being adapted with the riveting column；The second part is let droop by the edge of first part along the end of optical diaphragm
Directly bends and extend to hardware back plate surface；The Part III is pasted on the inside of the right angle folding edge of hardware backboard, and
The right angle folding edge and plastic middle-frame for being sandwiched in hardware backboard fasten in the gap of assembly.
The down straight aphototropism mode set of offer described in the utility model above-mentioned technical proposal is consolidated using the fixed film
Determine optical diaphragm, can in optical diaphragm thermal expansion/shrinkage change in size time limit diaphragm displacement, reaching only allows a diaphragm setting
The effect moved in meter range guarantees that display effect is unaffected.
Preferably, there is opening at the connecting edge of the first part and the second part.In the preferred scheme,
In designed openings on the two-part shared rib for forming right angle bending, the overall stability of fixed film, enhancing pair can be increased
The fixed effect of optical diaphragm.
Preferably, the quantity of the opening is one or more；When there are two the above opening, the opening
It is uniformly distributed in the connecting edge of the first part and the second part.
Preferably, the shape of the opening is rectangle or square.
Preferably, the first part is pasted in the ear of the optical diaphragm edge protrusion.
Preferably, the length of the fixed film is identical as the length of the ear.
Preferably, the Part III includes the L-type film for being pasted on the right angle folding edge medial surface of hardware backboard.
Preferably, the Part III further includes being extended outwardly by the L-type film and being pasted on the right angle of hardware backboard
Reinforcement film on the outside of folding edge.
Preferably, the fixed film with a thickness of 0.1 ± 0.05mm.
The utility model separately also proposes a kind of backlight screen for having used aforementioned down straight aphototropism mode set.The optics of the backlight screen
Diaphragm is due to the fixed film of the optical diaphragm for using preceding solution, so that temperature, the humidity when use environment become
When change, the expand with heat and contract with cold displacement of generation of optical diaphragm is limited, to avoid display effect is influenced.
Detailed description of the invention
Fig. 1 is the cross-sectional view of down straight aphototropism mode set；
Fig. 2 is the fixation schematic diagram of optical diaphragm in existing backlight module；
Fig. 3 is the partial sectional view for the down straight aphototropism mode set that the utility model specific embodiment proposes；
Fig. 4 is perspective view figure local shown in Fig. 3；
Fig. 5 is that optical diaphragm fixes film schematic diagram in the down straight aphototropism mode set of the utility model.
Specific embodiment
Below against attached drawing and in conjunction with preferred embodiment, the utility model is described in further detail.
In the description of the present invention, it should be understood that term " on ", "lower", " preceding ",
The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside"
To be based on the orientation or positional relationship shown in the drawings, it is merely for convenience of describing the present invention and simplifying the description, without referring to
Show or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot manage
Solution is limitations of the present invention.
When optical diaphragm is changed by temperature, humidity and thermal expansion/shrinkage occurs, the effect of backlight module will affect, thus shadow
Ring display effect.For example, diaphragm is easy to produce uncontrollable displacement when shrinkage；When thermal expansion, it may appear that film encircle and widen diaphragm with
The distance between diffuser plate, these can all impact final display effect.The utility model is in existing downward back
Increase the fixed film of an optical diaphragm in optical mode group, the displacement generated in process of expansion and contraction for limiting diaphragm can solve
Certainly above-mentioned technical problem.
With reference to Fig. 1 and Fig. 2, existing down straight aphototropism mode set mainly includes optical diaphragm 100, diffuser plate 500, hardware back
Plate 300, plastic middle-frame 400 and the riveting column 200 for fixing this, wherein the edge of optical diaphragm 100 corresponds to riveting
There is the ear of protrusion at column position, and the riveting post holes on optical diaphragm 100 is at least partially disposed in the ear, which is side
Shape.This structure, relative position and assembly relation belongs to the prior art, is no longer repeated herein.After the utility model
The content description stated is based primarily upon this part of the local A (edge corresponding to backlight module) of backlight module shown in FIG. 1
It carries out.
As shown in Figure 3 and Figure 4, the down straight aphototropism mode set that specific embodiment of the present utility model proposes, including optics
Diaphragm 100, diffuser plate 500, hardware backboard 300, plastic middle-frame 400 and the riveting column 200 for fixing this further include
Optical diaphragm fixes film (aftermentioned abbreviation " fixed film "), and the fixed film includes sequentially connected in a manner of right angle bending
First part 1, second part 2 and Part III 3；First part 1 is pasted on optical diaphragm frontside edge, and have with it is described
The adaptable arc-shaped notch of riveting column 200；The second part 2 is downward along the end of optical diaphragm 100 by the edge of first part 1
Vertically bends and extend to 300 surface of hardware backboard；The Part III 3 is on the inside of the right angle folding edge of hardware backboard 300
It pastes, and is sandwiched in the right angle folding edge of hardware backboard 300 and the gap of the fastening assembly of plastic middle-frame 400.
The length of the fixed film is preferably identical as the length of the ear of optical diaphragm edge protrusion, certainly,
The length of the ear can also be slightly shorter than；The first part 1 of the fixed film is pasted in the ear, and institute
The arc-shaped notch and riveting column 200 for stating first part 1 are adapted.In 100 shrinkage of optical diaphragm, the fixed film can be with
The optical diaphragm 100 is mobile to center, and the arc-shaped notch abuts riveting column 200 at this time, while based on the entire fixed glue
The right angle bending structure of piece designs and the paste position of its second part and Part III, can limit optical diaphragm 100 because
Excessive displacement is generated for shrinkage.When 100 thermal expansion of optical diaphragm, the fixed film by the riveting column 200 with
And the fastening assembly of plastic middle-frame and hardware backboard within the allowable range by the displacement limitation of the optical diaphragm prevents film from encircleing
While be also prevented from and generate excessive displacement.
It should be understood that in the down straight aphototropism mode set of the aforementioned proposition of the utility model, it is all in optical diaphragm
100, diffuser plate 500, hardware backboard 300 and plastic middle-frame 400 this using the fixed place of the riveting column, it is one group settable
The fixed film of optical diaphragm above-mentioned, in this way can be more uniform to the limitation of whole optical film piece, and restriction effect is ideal.When
So, be also not excluded for only the fixation film is arranged in a Ge Mao column bearing or certain several symmetrical Mao Zhu bearing wherein.In short,
The utility model does not restrict the quantity of fixation film set in the backlight module.
The thickness of the fixed film of the optical diaphragm is preferably in 0.1 ± 0.05mm, and thickness everywhere should be uniform, more preferably
Be with a thickness of 0.1mm.The optical diaphragm fixes 80 DEG C of film heatproof, material MY9WZ, and glue type used is acrylic acid
Esters, to adhesion (removing) >=7N/2.5cm of steel plate.But this only illustrates, it should be appreciated that using which kind of material
Glue, which kind of technique make the fixed film of the optical diaphragm and do not constitute limitation to scope of protection of the utility model.Based on this
The shape design of the fixed film of the optical diaphragm of utility model, the optical diaphragm produced using the glue of other materials
Fixed film, comes under the protection scope of the utility model.
With continued reference to Fig. 3 and Fig. 4, the Part III 3 of the fixed film includes being pasted on the hardware backboard 300
Right angle folding edge medial surface L-type film.Specifically, as shown in figure 3, the short side of L-type film and the second part 2
Connection, and is pasted on hardware backboard 300 on one side, the flange bottom of a portion of another side and plastic middle-frame 400 it
Between have a little gap；The long side of L-type film is pasted on the medial surface, another side and modeling of 300 folding edge of hardware backboard on one side
Expect that there is a little gap between the flange side of center 400.
In further embodiments, the Part III 3, which may also include, is extended outwardly by the L-type film and is pasted on five
Reinforcement film 31 on the outside of the right angle folding edge of golden backboard 300.That is, right angle of the Part III 3 along hardware backboard 300
Folding edge Inside To Outside, which extends, to be pasted, and structure as illustrated in fig. 3 is formed, in this kind of embodiment, the third portion
3 are divided successively to be formed by connecting in a manner of right angle bending by four films, so that the structure of the fixed film itself is more firm.
In some preferred embodiments, as shown in Figure 4 and Figure 5, the first part 1 of the fixed film and described
There is opening 11,11 size of being open should not be too large at the connecting edge of second part 2.The quantity of opening 11 with no restriction, can be with
Only one, can also be there are two more than；When there are two the above opening, the opening is uniformly distributed in described first
Point 1 and the second part 2 connecting edge on.On the other hand, the utility model does not also make rising limit to the shape of the opening 11
System, shape can perhaps square rectangle or the opening of square be relatively simple in manufacture craft for rectangle；When
So, if not considering opening process difficulty, the shape of opening 11 can even is that ellipse, round, round rectangle etc..Opening
11 effect is: can prevent the fixed film deformation to a certain extent, enhance fixed film to optical diaphragm 100
Fixed function.
The fixed film of optical diaphragm above-mentioned, is mainly used in the down straight aphototropism mode set of large scale (espespecially 65 cun or more)
In, certainly, also it is not excluded for can be adapted in 65 cun of backlight modules below.Using the straight of the fixed film of the optical diaphragm
In type backlight mould group, when diaphragm thermal expansion becomes large-sized, diaphragm itself can integrally extend outside, but this extension can be by
To the limitation of fixed film, the displacement too big so that it will not movement is caused, but in turn ensures be unlikely to film arch simultaneously；When diaphragm shrinkage
When, it being limited by fixed film, the arc-shaped notch for fixing film first part in addition is against on riveting column, so that fixed film
First part 1, second part 2 and Part III 3, which are capable of forming, resists power of the diaphragm to contract, limits diaphragm displacement.
In addition, specific embodiment of the present utility model also proposes a kind of downward back optical screen comprising this is practical new
Down straight aphototropism mode set provided by type is aforementioned.The downward back optical screen fixes film due to using the optical diaphragm, from
And when the temperature of its local environment, humidity change, the displacement that optical diaphragm heat expansion, shrinkage generate, which is able to be limited in, to be set
It counts in range.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For those skilled in the art of the present invention
For, without departing from the concept of the premise utility, several equivalent substitute or obvious modifications, and performance can also be made
Or purposes is identical, all shall be regarded as belonging to the protection scope of the utility model.
Claims (10)
1. a kind of down straight aphototropism mode set, including optical diaphragm (100), diffuser plate (500), hardware backboard (300), plastic middle-frame
(400) and for by this fixed riveting column (200), which is characterized in that also have the fixed film of optical diaphragm, the light
Learning the fixed film of diaphragm includes: sequentially connected first part (1), second part (2) and Part III in a manner of right angle bending
(3)；
The first part is pasted on optical diaphragm (100) edge and has the arc being adapted with the riveting column (200) recessed
Mouthful；The second part (2) is bent downward vertically along the end of optical diaphragm by the edge of first part and extends to hardware back
Plate (300) surface；The Part III (3) is pasted on the inside of the right angle folding edge of hardware backboard (300), and is sandwiched in hardware
The right angle folding edge of backboard and plastic middle-frame (400) fasten in the gap of assembly.
2. down straight aphototropism mode set as described in claim 1, it is characterised in that: the first part (1) and second described
Dividing has opening (11) at the connecting edge of (2).
3. down straight aphototropism mode set as claimed in claim 2, it is characterised in that: the quantity of the opening (11) is one or two
More than a；When there are two the above opening, the opening is uniformly distributed in the first part (1) and the second part
(2) in connecting edge.
4. down straight aphototropism mode set as claimed in claim 2, it is characterised in that: it is described opening (11) shape be rectangle or
Square.
5. down straight aphototropism mode set as described in claim 1, it is characterised in that: the first part is pasted on the optical film
In the ear of piece (100) edge protrusion.
6. down straight aphototropism mode set as claimed in claim 5, it is characterised in that: the length of the fixed film and the ear
Length it is identical.
7. down straight aphototropism mode set as described in claim 1, it is characterised in that: the Part III (3) includes being pasted on five
The L-type film of the right angle folding edge medial surface of golden backboard.
8. down straight aphototropism mode set as claimed in claim 7, it is characterised in that: the Part III (3) further includes by the L
Type film extends outwardly and is pasted on the reinforcement film (31) on the outside of the right angle folding edge of hardware backboard (300).
9. down straight aphototropism mode set as claimed in any one of claims 1 to 8, it is characterised in that: the thickness of the fixed film
For 0.1 ± 0.05mm.
10. a kind of downward back optical screen, it is characterised in that: used direct-type backlight as described in any one of claims 1 to 9
Mould group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920017646.9U CN209418047U (en) | 2019-01-07 | 2019-01-07 | A kind of down straight aphototropism mode set and backlight screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920017646.9U CN209418047U (en) | 2019-01-07 | 2019-01-07 | A kind of down straight aphototropism mode set and backlight screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209418047U true CN209418047U (en) | 2019-09-20 |
Family
ID=67942835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920017646.9U Active CN209418047U (en) | 2019-01-07 | 2019-01-07 | A kind of down straight aphototropism mode set and backlight screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209418047U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021103590A1 (en) * | 2019-11-28 | 2021-06-03 | 广州视源电子科技股份有限公司 | Backlight module and display device |
| CN114609828A (en) * | 2022-04-07 | 2022-06-10 | Tcl华星光电技术有限公司 | Diaphragm fixing structure, backlight module and liquid crystal display device |
-
2019
- 2019-01-07 CN CN201920017646.9U patent/CN209418047U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021103590A1 (en) * | 2019-11-28 | 2021-06-03 | 广州视源电子科技股份有限公司 | Backlight module and display device |
| CN114609828A (en) * | 2022-04-07 | 2022-06-10 | Tcl华星光电技术有限公司 | Diaphragm fixing structure, backlight module and liquid crystal display device |
| CN114609828B (en) * | 2022-04-07 | 2023-07-25 | Tcl华星光电技术有限公司 | Diaphragm fixing structure, backlight module and liquid crystal display device |
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