CN108469647A - Light guide plate, backlight module with optical performance protective film and its assemble method - Google Patents
Light guide plate, backlight module with optical performance protective film and its assemble method Download PDFInfo
- Publication number
- CN108469647A CN108469647A CN201810176650.XA CN201810176650A CN108469647A CN 108469647 A CN108469647 A CN 108469647A CN 201810176650 A CN201810176650 A CN 201810176650A CN 108469647 A CN108469647 A CN 108469647A
- Authority
- CN
- China
- Prior art keywords
- guide plate
- light guide
- protective film
- backlight module
- adhesion layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0065—Manufacturing aspects; Material aspects
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a kind of light guide plate, backlight module and its assemble methods with optical performance protective film; light guide plate is provided with a protective film on a surface; and protective film has an adhesion layer, a reflective coating layer and a protective layer; adhesion layer with surface mount for fixing and containing air dielectric; reflective coating layer is located in adhesion layer and protection interlayer; wherein, adhesion layer is added with foaming agent so that adhesion layer is at least containing 90% air dielectric.And it corresponds to group in an incidence surface side of light guide plate and sets a lamp bar; so as to be used as backlight module; and when mounted can by light guide plate and thereon protective film assembled together; improve the efficiency of assembly; and the light projected from surface in application can be reflected back because of reflective coating layer inside light guide plate, and then promote the utilization rate to light.
Description
Technical field
The present invention relates to optical articles field, more particularly to a kind of light guide plate, backlight mould with optical performance protective film
Group and its assemble method.
Background technology
Backlight module be it is a kind of point light source can be guided to the optical articles to form uniform area light source, mostly be applied to display
In equipment, to provide the light needed for display panel and then achieve the purpose that show picture.Since it is set to the panel back of the body mostly
Side, therefore referred to as backlight module.
The source light that backlight module will be correspondingly arranged by a light guide plate, guiding form the uniform light extraction of planar.Into one
Step ground can add the optical element such as diffusion sheet, prismatic lens to promote the utilization efficiency of backlight module in backlight module,
To adjust the light condition of light guide plate injection.On the other hand, in the part of opposite light emission side, to prevent some light from overflowing from this
The problem of dissipating and light utilization is caused to decline is utilized in light guide plate relative to one reflector plate of other setting at light emission side at present
Mode, reflect light back into light guide plate.Wherein, reflector plate is also known as reflecting plate or reflectance coating, is a plate body structure, and nothing
By being reflector plate, reflecting plate or reflectance coating, each mean independently of light guide plate and other additional optical articles.
When above-mentioned light guide plate is in assembling, since reflector plate above-mentioned need to be added, cause to reduce overall package efficiency,
Increase product material cost simultaneously.Therefore throughput rate and product efficiency how are taken into account, is that presently relevant manufacturer is badly in need of solving
The problem of.
Invention content
The technical problem to be solved by the present invention is in order to overcome light guide plate in the prior art to need to install reflector plate, cause
Overall package efficiency reduces, and makes the increased defect of product material cost, provides a kind of leaded light with optical performance protective film
Plate, backlight module and its assemble method.
The present invention is to solve above-mentioned technical problem by following technical proposals：
A kind of light guide plate with optical performance protective film, it includes：One surface；One incidence surface, the incidence surface and institute
State surface perpendicular abutment setting；And a protective film, the protective film are covered in the surface, the protective film has one to stick together
Layer, a reflective coating layer and a protective layer, the adhesion layer are described for air dielectric to be fixed and contained with the surface mount
Reflective coating layer is located between the adhesion layer and the protective layer；Wherein, the adhesion layer is added with foaming agent, the hair
Infusion is for making the adhesion layer at least containing 90% air dielectric；The light projected as a result, from the surface is due to described
Reflective coating layer and be reflected back inside the light guide plate, and then promoted light guide plate optical property.
Preferably, the thickness of the protective layer is more than the thickness of the adhesion layer and the reflective coating layer, protected with being promoted
The protective capacities such as the wear-resistant anti scuffing of sheath.
Preferably, the adhesion layer is coated on by wire mark mode on the reflective coating layer, so that the adhesion layer has
There are multiple wire mark glue points, thus can get preferable adhesion layer quality and promotes the manufacture efficiency of protective film.
Preferably, the grain size of each wire mark glue point is less than 50 μm, wire mark glue point thus can be prevented excessive and influence light
Adjustment effect.
A kind of backlight module, it includes：One light guide plate as described above with optical performance protective film；And a lamp bar,
The lamp bar corresponds to the incidence surface setting, and forming side with the relatively described light guide plate enters light；Thus the backlight module is reduced
Assembly cost and promote light utilization, can reach using the protective film on light guide plate and avoid unnecessary ray waste
Function, and material cost can be thus reduced, without remaining optical element with reflecting effect is in addition added, opposite can also carry
Rise assembling speed.
A kind of assemble method of backlight module, it includes：By a leaded light as described above with optical performance protective film
Plate is put into a backlight module frame；A lamp bar is arranged in the corresponding incidence surface, and forming side with the relatively described light guide plate enters light；And
The backlight module is heated, foaming agent is made to expand, and then air dielectric is formed between the reflective coating layer and the surface, with
The assembly cost for reducing the backlight module, assembling when need not expend the time protective film is removed, as long as and by light guide plate with
Protective film one is placed into backlight module frame.
The positive effect of the present invention is that：
Light guide plate, backlight module and its assemble method with optical performance protective film, by being arranged on light guide plate
The protective film with reflection performance, eliminate and add such as reflector plate, reflecting plate or reflectance coating optics member on light guide plate
Part thereby reduces product cost.Meanwhile protective film need not be removed in assembling, it is only necessary to it be made to be carried out together with light guide plate
Assembly Action, and the optical element of tool reflection performance need not be added again as described above, packaging efficiency thus can be greatly improved,
Save assembly cost.
Description of the drawings
Fig. 1 is the structural schematic diagram of the light guide plate of one embodiment of the invention.
Fig. 2 is the cross-sectional view of the light guide plate of one embodiment of the invention.
Fig. 3 is the structural schematic diagram of the backlight module of one embodiment of the invention.
Fig. 4 is the assembling steps flow chart of the backlight module of one embodiment of the invention.
Fig. 5 is the structural schematic diagram of the backlight module of one embodiment of the invention after assembly is completed.
Reference sign：
1：Light guide plate
10：Surface
11：Incidence surface
12：Protective film
121：Adhesion layer
1211：Wire mark glue point
122：Reflective coating layer
123：Protective layer
13：Light-emitting surface
2：Backlight module
20：Lamp bar
3：Backlight module frame
Step S01~S03
Specific implementation mode
It is further illustrated the present invention below by the mode of embodiment, but does not therefore limit the present invention to the reality
It applies among a range.
As described above, promoting the demands such as overall package efficiency and reduction backlight module material cost, the present invention to reach
People proposes following technology contents, increases the efficiency of light guide plate and its backlight module by protective film is arranged, and thus reaches
To the effect saved assembly cost with promote packaging efficiency.As depicted in figs. 1 and 2, it is the light conducting plate structure signal of the present invention
Figure and light guide plate cross-sectional view, wherein painted in figure and be merely to illustrate signal and be used, do not represented described in the present embodiment
The practical structures of content.The present invention proposes a kind of light guide plate 1 with optical performance protective film in the present embodiment, and it includes one
Surface 10, an incidence surface 11 and a protective film 12.
Above-mentioned incidence surface 11 is arranged with 10 perpendicular abutment of surface, it is preferable that the light guide plate 1 can more have a light-emitting surface
13, for light from this light extraction, and surface 10 is oppositely arranged with light-emitting surface 13, and can be further provided on light-emitting surface 13
Optical microstructures (not shown), for destroying the total reflection of light and then forming light extraction, this is the existing skill in the field
Art, therefore details are not described herein.Protective film 12 is covered in surface 10 and with an adhesion layer 121, a reflective coating layer 122 and one
Protective layer 123, adhesion layer 121 are used to stick together fixed with surface 10 and contain air dielectric, and reflective coating layer 122, which is folded in, to be sticked together
Between layer 121 and protective layer 123.Wherein, adhesion layer 121 is added with foaming agent, makes adhesion layer 121 at least containing 90% air
Medium.As a result, in practical application, the light projected by surface 10 can be reflected back due to reflective coating layer 122 in light guide plate 1
Portion forms light extraction to be directed to again, reaches the case where preventing light spill and leakage and light ray energy is caused to waste, also
The light projected from surface 10 is set effectively to be reflected back toward light guide plate 1 by protective film 12.
Specifically, protective film 12 can be preferably made by way of total signature (co-extrusion), and form knot as described above
Structure.Protective film 12 is fixed on the surface 10 of light guide plate 1 by adhesion layer 121, and adhesion layer 121 has included air dielectric, by
This, light just can be effectively reflected back via reflective coating layer 122 in light guide plate 1.If because of adhesion layer 121 and 10 mistake of surface
In being close to, can cause to generate optical diffraction phenomenon by the light projected, therefore adhesion layer 121 to be made to have included air Jie
Matter occurs to avoid above-mentioned diffraction phenomena and ensures that light reaches reflective coating layer 122 and is reflected back toward light guide plate 1.And
In the present embodiment, then discloses by adding foaming agent in adhesion layer 121, make in adhesion layer 121 at least containing 90% air
Medium, to enable light smoothly to transmit.
In addition, adhesion layer 121 can be also coated in by wire mark mode on reflective coating layer 122, thus there can be multiple nets
Glue point 1211 is printed, the grain size of those wire mark glue points 1211 is preferably less than 50 μm, excessive instead to avoid wire mark glue point 1211
Reduce the optical performance of light guide plate 1.Wherein, the optical cement with low refraction coefficient can be used in adhesion layer 121.
Such as white ink material can be used in the part of reflective coating layer 122, certainly to reach reflection light by its characteristic
Effect.Protective layer 123 is located at 12 outermost of protective film, and can be a plastic basis material such as polyethylene terephthalate
(PET), to achieve the effect that prevent reflective coating layer 122 from, by scraped finish or collision, avoiding influencing in reality with 1 surface of light guide plate
Reflecting effect when use.In addition, to ensure that protective layer 123 can certainly resist external force, the thickness of protective layer 123 can be allowed to be more than
The thickness of adhesion layer 121 and reflective coating layer 122 makes the part that protective layer 123 is most thick in protective film 12 in other words.By
The above is it is found that light guide plate 1 can more be applied by protective film 12 other than it can reach anti-scratch equal protection effectiveness by its reflection
The bed of material 122 and make light guide plate 1 use when can have reflection spill and leakage light the effect of, therefore be arranged on 1 surface 10 of light guide plate
Protective film 12 with reflection and anti-scratch equal multiple actions be not simple to paste membrane material.
As shown in figure 3, its back light module unit structure schematic diagram for the present invention, and please arrange in pairs or groups together with reference to figure 1 and Fig. 2.This
Invention also provides a kind of backlight module 2 of light guide plate of the application with optical performance protective film, and it includes a tools as described above
There are the light guide plate 1 and a lamp bar 20 of optical performance protective film.Lamp bar 20 corresponds to incidence surface 11 and is arranged, with 1 shape of opposite light guide plate
Enter light at side.Thus assembly cost can be reduced and promote light utilization, while saving the material cost of backlight module 2.This
The backlight module 2 that embodiment provides, due to can assemble protective film 12 and light guide plate 1 together in assembling, so as to more rapidly
Assembly is completed on ground, saves assembly cost.And the protective film 12 of light guide plate 1 has reflective coating layer 122, therefore in backlight mould
Can reach when 2 operation of group will be reflected back from the light of 10 spill and leakage of surface inside light guide plate 1 function to continue with, effectively be promoted
The utilization rate of light, avoids light ray energy from wasting, while can save and add reflecting plate, reflector plate or reflection on backlight module 2
The material cost and built-up time of the elements such as film.And in the present embodiment, lamp bar 20 can be that multiple LED are arranged at intervals on electricity
Structure on the plate of road, but this is only a preferable application state.Certainly, in order to fix lamp bar 20 and light guide plate 1, backlight can also be made
There is module 2 backlight module frame, this partial content can be described below.
Enter light in practical application, the light sent out by lamp bar 20 forms side and light guide plate 1 is entered by incidence surface 11
It is interior, and form light extraction on light-emitting surface 13.The light that part is projected from surface 10 penetrates adhesion layer 121 and is transferred to reflective coating
Layer 122, and then the effect of reflected dope layer 122 and be reflected back in light guide plate 1, to which light is persistently directed to light extraction
Thus face 13 is effectively reduced the phenomenon that light ray energy is consumed, relatively promote the light-out effect of backlight module 2.Actually answering
It uses, will produce thermal energy when lamp bar 20 works, cause entire backlight module 2 heated, at this time by by protective film 12 and surface
10 separation, diffraction phenomena caused by adhesion layer 121 is too closely contacted with surface 10 when can prevent from using.
Similarly, in light guide plate 1 provided in this embodiment, the thickness of protective layer 123 be also greater than adhesion layer 121 with
The thickness of reflective coating layer 122, to have preferable protecting effect.Adhesion layer 121 can be coated in reflection by wire mark mode and apply
On the bed of material 122, and there are multiple wire mark glue points 1211, in addition, wire mark glue point 1211 influences light guide plate 1 and goes out light efficiency in order to prevent
Fruit can further make each wire mark glue point 1211 be less than 50 μm.Remaining details technical characteristic please arrange in pairs or groups with reference to above-mentioned interior
Hold.
As shown in Figure 4 and Figure 5, for the backlight module assembling steps flow chart of the present invention and after assembly is completed
Back light module unit structure schematic diagram.The present invention also provides a kind of assemblings of the backlight module of the light guide plate with optical performance protective film
Method, it includes steps as described below.First, an aforementioned light guide plate 1 is put into a backlight module frame 3 (step S01).It connects
It, a lamp bar 20 is arranged in corresponding incidence surface 11, and forming side with opposite light guide plate 1 enters light (step S02), then, heats backlight
Module 2, makes foaming agent expand, and then air dielectric (step S03) is formed between reflective coating layer 122 and surface 10.Pass through this
Light guide plate 1 and protective film 12 disposed thereon can be placed into backlight module frame 3 by method when assembling backlight module 2, and
Protective film 12 need not be removed and be assembled again, to promote the efficiency of assembly.After heated, foaming agent expanded by heating is simultaneously
Air dielectric can be formed between reflective coating layer 122 and surface 10, in other words, you can so that adhesion layer 121 is generated air and be situated between
Matter, certainly to use it to the generation for preventing light diffraction phenomenon.
Backlight module 2 after assembling can refer to shown in Fig. 5, and light guide plate 1 and protective film 12 disposed thereon are mounted together
To backlight module frame 3, to improve assembling speed and saving group loads onto spent cost, and in practical application
Reach the function of reflection light by protective film 12, even more can be omitted increase such as reflecting plate, reflector plate or reflectance coating at
Sheet and time.Remaining about backlight module detailed content and can further additional technical characteristic, please arrange in pairs or groups with reference to aforementioned
Content and diagram.
In conclusion light guide plate, backlight module and its assembling side provided by the present invention with optical performance protective film
Method other than having effects that protection, can also be exempted by the protective film with reflection performance being arranged on light guide plate
The optical element such as reflector plate, reflecting plate or reflectance coating is added on light guide plate, thereby reduces product cost.Meanwhile in group
Protective film need not be removed when dress, it is only necessary to so that it is carried out the Assembly Action of backlight module together with light guide plate, and as previously described
Need not add the optical element with reflection performance again, thus can greatly improve packaging efficiency, save assembly cost.This
Outside, it is used to as protective film contact fixed adhesion layer with light guide plate, the design based on optical principle has also been carried out to it.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that this is only
For example, protection scope of the present invention is to be defined by the appended claims.Those skilled in the art without departing substantially from
Under the premise of the principle and substance of the present invention, many changes and modifications may be made, but these change and
Modification each falls within protection scope of the present invention.
Claims (9)
1. a kind of light guide plate with optical performance protective film, which is characterized in that it includes：
One surface；
One incidence surface, the incidence surface are arranged with the surface perpendicular abutment；And
One protective film, the protective film are covered in the surface, and the protective film has an adhesion layer, a reflective coating layer and one
Protective layer, for the adhesion layer for air dielectric to be fixed and contained with the surface mount, the reflective coating layer is located in institute
It states between adhesion layer and the protective layer；
Wherein, the adhesion layer is added with foaming agent, and the foaming agent is for making the adhesion layer at least containing 90% air
Medium.
2. the light guide plate with optical performance protective film as described in claim 1, which is characterized in that the thickness of the protective layer
More than the thickness of the adhesion layer and the reflective coating layer.
3. the light guide plate with optical performance protective film as described in claim 1, which is characterized in that the adhesion layer passes through net
India side formula is coated on the reflective coating layer, so that the adhesion layer has multiple wire mark glue points.
4. the light guide plate with optical performance protective film as claimed in claim 3, which is characterized in that each wire mark glue point
Grain size is less than 50 μm.
5. a kind of backlight module, which is characterized in that it includes：
One light guide plate as described in claim 1 with optical performance protective film；And
One lamp bar, the lamp bar correspond to the incidence surface setting, and forming side with the relatively described light guide plate enters light.
6. backlight module as claimed in claim 5, which is characterized in that the thickness of the protective layer is more than the adhesion layer and institute
State the thickness of reflective coating layer.
7. backlight module as claimed in claim 5, which is characterized in that the adhesion layer is coated on described anti-by wire mark mode
It penetrates on dope layer, so that the adhesion layer has multiple wire mark glue points.
8. backlight module as claimed in claim 7, which is characterized in that the grain size of each wire mark glue point is less than 50 μm.
9. a kind of assemble method of backlight module, which is characterized in that it includes：
One light guide plate as described in claim 1 with optical performance protective film is put into a backlight module frame；
A lamp bar is arranged in the corresponding incidence surface, and forming side with the relatively described light guide plate enters light；And
The backlight module is heated, foaming agent is made to expand, and then forms air between the reflective coating layer and the surface and is situated between
Matter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810176650.XA CN108469647A (en) | 2018-03-03 | 2018-03-03 | Light guide plate, backlight module with optical performance protective film and its assemble method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810176650.XA CN108469647A (en) | 2018-03-03 | 2018-03-03 | Light guide plate, backlight module with optical performance protective film and its assemble method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108469647A true CN108469647A (en) | 2018-08-31 |
Family
ID=63264957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810176650.XA Pending CN108469647A (en) | 2018-03-03 | 2018-03-03 | Light guide plate, backlight module with optical performance protective film and its assemble method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108469647A (en) |
Citations (7)
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| JP2002350849A (en) * | 2001-05-25 | 2002-12-04 | Citizen Electronics Co Ltd | Front light of liquid crystal display device |
| JP2006171585A (en) * | 2004-12-17 | 2006-06-29 | Enplas Corp | Reflection member, surface light source device, and display device |
| CN102798080A (en) * | 2011-05-23 | 2012-11-28 | 惠和株式会社 | Reflective sheet and backlight unit |
| CN102478217B (en) * | 2010-11-26 | 2013-08-28 | 中强光电股份有限公司 | Light guide panel and backlight module |
| CN103339434A (en) * | 2011-12-26 | 2013-10-02 | 古河电气工业株式会社 | Reflector, method for manufacturing reflector, and backlight panel |
| CN106154398A (en) * | 2016-07-27 | 2016-11-23 | 京东方科技集团股份有限公司 | A kind of side entrance back module and display device |
| CN106353850A (en) * | 2016-11-03 | 2017-01-25 | 南京诺邦新材料有限公司 | Compact ultrathin liquid crystal display backlight module structure and manufacturing method thereof |
-
2018
- 2018-03-03 CN CN201810176650.XA patent/CN108469647A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002350849A (en) * | 2001-05-25 | 2002-12-04 | Citizen Electronics Co Ltd | Front light of liquid crystal display device |
| JP2006171585A (en) * | 2004-12-17 | 2006-06-29 | Enplas Corp | Reflection member, surface light source device, and display device |
| CN102478217B (en) * | 2010-11-26 | 2013-08-28 | 中强光电股份有限公司 | Light guide panel and backlight module |
| CN102798080A (en) * | 2011-05-23 | 2012-11-28 | 惠和株式会社 | Reflective sheet and backlight unit |
| CN103339434A (en) * | 2011-12-26 | 2013-10-02 | 古河电气工业株式会社 | Reflector, method for manufacturing reflector, and backlight panel |
| CN106154398A (en) * | 2016-07-27 | 2016-11-23 | 京东方科技集团股份有限公司 | A kind of side entrance back module and display device |
| CN106353850A (en) * | 2016-11-03 | 2017-01-25 | 南京诺邦新材料有限公司 | Compact ultrathin liquid crystal display backlight module structure and manufacturing method thereof |
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