CN205982698U - Dispersing element, backlight unit and display device - Google Patents
Dispersing element, backlight unit and display device Download PDFInfo
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- CN205982698U CN205982698U CN201620802740.1U CN201620802740U CN205982698U CN 205982698 U CN205982698 U CN 205982698U CN 201620802740 U CN201620802740 U CN 201620802740U CN 205982698 U CN205982698 U CN 205982698U
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- woven fabrics
- diffusion sheet
- diffusion
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Abstract
The utility model provides a method of dispersing element and preparation, backlight unit and display device. This dispersing element includes non -woven fabrics diffusion piece, non -woven fabrics diffusion piece uses the non -woven fabrics as the basement, and there is the diffusing particle layer the adhering to on the surface of at least one side of basement. This dispersing element is with low costs, the yield is high and preparation simple process.
Description
Technical field
This utility model at least one embodiment is related to a kind of diffused component, backlight module and display device.
Background technology
Liquid crystal display has obtained increasingly being widely applied in display field, but itself does not light, produced picture
Area source is to be provided by backlight module therein, and its light source requirements is uniform, high brightness.
Whether light emitting diode (Light Emitting diode, LED) backlight or cold cathode fluorescence lamp (Cold
Cathode Fluorescent Lamp, CCFL) backlight, the light that it is sent is point source or line source, rather than face
Light source.But through backlight module diffusion barrier, a uniform area source can be scattered in.Light when diffusion layer,
By optical phenomenas such as the refraction that constantly occurs in the medium different in two kinds of refractive indexs, reflections, thus obtaining optics diffusion
Result.
Utility model content
At least one embodiment of the present utility model is related to a kind of diffused component, backlight module and display device, to provide one
Plant the diffused component of low cost, yield height and process is simple.
At least one embodiment of the present utility model provides a kind of diffused component, including non-woven fabrics diffusion sheet, described non-woven fabrics
Diffusion sheet is with non-woven fabrics as substrate, and is attached with diffusion particle layer on the surface of at least side of described substrate.
At least one embodiment of the present utility model also provides a kind of backlight module, including of the present utility model at least one enforcement
Arbitrary diffused component that example provides.
At least one embodiment of the present utility model also provides a kind of display device, including of the present utility model at least one enforcement
Arbitrary backlight module that example provides.
Brief description
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, simple by making to the accompanying drawing of embodiment below
Ground introduce it should be apparent that, drawings in the following description merely relate to some embodiments of the present utility model, rather than to this practicality
New restriction.
Fig. 1 is a kind of schematic diagram of backlight module；
A kind of schematic diagram of diffused component that Fig. 2 provides for this utility model one embodiment；
A kind of schematic diagram of diffused component that Fig. 3 provides for another embodiment of this utility model；
The schematic diagram that Fig. 4 is fixed with metal frame for the diffused component that this utility model one embodiment provides；
Fig. 5 is embedded in framework element after being fixed with metal frame for the diffused component that this utility model one embodiment provides
Schematic diagram；
A kind of schematic diagram of backlight module that Fig. 6 provides for this utility model one embodiment；
A kind of Making programme schematic diagram of diffused component that Fig. 7 a provides for this utility model one embodiment；
A kind of coupling apparatus that Fig. 7 b provides for this utility model one embodiment describe showing of the Making programme of diffused component
It is intended to；
A kind of electron microscopic picture of the diffusion particle layer of diffused component that Fig. 8 provides for this utility model one embodiment.
Reference：
001- backboard；002- reflecting element；003- light-emitting component；004- diffuser plate (diffusion plate)；005- expands
Discrete piece (diffusion film)；006- circuit board 007- framework element；100- non-woven fabrics；200- diffusion particle layer；201- tree
Fat；202- diffusion particle；01- non-woven fabrics diffusion sheet；02- metal frame.
Specific embodiment
Purpose, technical scheme and advantage for making this utility model embodiment are clearer, new below in conjunction with this practicality
The accompanying drawing of type embodiment, is clearly and completely described to the technical scheme of this utility model embodiment.Obviously, described
Embodiment is a part of embodiment of the present utility model, rather than whole embodiments.Based on described of the present utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained on the premise of without creative work, all belong to
Scope in this utility model protection.
Unless otherwise defined, the technical term that this utility model uses or scientific terminology should be belonging to this utility model
There is in field the ordinary meaning that the personage of general technical ability is understood." first " used in this utility model, " second " and
Similar word is not offered as any order, quantity or importance, and is used only to distinguish different ingredients." inclusion "
Or the word that "comprising" etc. is similar to means to occur element before this word or object is covered and occurred in this word presented hereinafter
Element or object and its equivalent, and it is not excluded for other elements or object.The word that " connection " or " being connected " etc. are similar to is simultaneously
Non-limiting but electrical connection can be included in physics or machinery connection, no matter being direct or indirectly.
" on ", D score, "left", "right" etc. be only used for representing relative position relation, after the absolute position being described object changes, then should
Relative position relation is likely to correspondingly change.
Give a kind of schematic diagram of backlight module in Fig. 1, in backboard 001, be provided with reflecting element 002 and light-emitting component
003, backboard 001 is additionally provided with diffuser plate 004 and diffusion sheet 005, light-emitting component 003 is located at reflecting element 002 and diffuser plate
Between 004.Light-emitting component 003 can be located in the cavity of backboard 001.The material of diffusion sheet 005 generally includes poly terephthalic acid
Glycol ester (polyethylene terephthalate, PET), the material of diffuser plate 004 generally includes polystyrene
(polystyrene, PS), reflecting element 002 can be for example reflecting paper.Generally backlight module is located at the non-display of display floater
Side.
Generally, PET diffusion sheet uses coating process, and technique needs through coiled material pan feeding → UV optical cement coating → UV exposure
The production processes such as machine exposure → coiled material；In coating process, scratching easily occurs in UV optical cement, white point, the bad phenomenon such as foreign body.
The framework of diffusion sheet 005 and diffuser plate 004 has high cost, warpage easily, is not suitable for automated production, work
Skill is complicated, and fraction defective is higher, and its body belongs to chemical products, is unfavorable for the defects such as environmental protection it is impossible to meet the high-end of photovoltaic industry
Demand.
As shown in Fig. 2 a this utility model at least embodiment provides a kind of diffused component, including non-woven fabrics diffusion sheet 01,
Non-woven fabrics diffusion sheet is with non-woven fabrics 100 as substrate, and is attached with diffusion particle layer 200 on the surface of at least side of substrate.
Non-woven fabrics (English name：Non Woven Fabric or Nonwoven cloth) also known as adhesive-bonded fabric, it is by orienting
Or random fiber and constitute, be environment-friendly materials of new generation, there is protection against the tide, ventilative, pliable and tough, light weight, not combustion-supporting, easily point
Solution, nontoxic nonirritant, rich color, cheap, recyclable the features such as.For example non-woven fabrics (adopt polypropylene (pp more
Material) pellet be raw material, batch continuous one-step and produce through high-temperature fusion, spray webbing, lapping, hot pressing.Because having the outer of cloth
See and some performances and be called cloth.Embodiment of the present utility model is not construed as limiting for non-woven fabrics are made using which kind of mode.
Non-woven fabrics have certain elasticity, and plasticity is strong；There is certain shielding, screening effect is good；Have certain
Light transmission, light transmittance can be changed；These properties of non-woven fabrics are that it provides possibility as the substrate of diffused component.Non-woven fabrics
The surface of at least side on attachment diffusion particle layer, can help to atomization and fall lamp shadow.
The diffused component that a this utility model at least embodiment provides, can reduce production work using non-woven fabrics diffusion sheet
Skill, reduces fraction defective；Non-woven fabrics are used as the base material environmental protection of diffusion sheet, safety；Diffusion particle is formed on nonwoven fabric base bottom
Layer is easy to output bas line and is produced；Diaphragm can be reduced using non-woven fabrics diffusion sheet, cost-effective.
With common PET diffusion sheet+PS diffuser plate as diffused component compared with, using non-woven fabrics diffusion sheet as diffusion unit
Part has at least one following beneficial effect.
(1) cost of raw material of non-woven fabrics diffusion sheet low (about 2 yuan/kg), cost-effective；Common backlight module diffusion sheet
Framework high cost.For example, the cost of material of PET base material very high (about 13 yuan/kg).
(2) the later stage simple production process (former material → cut → item frame → assembling) of non-woven fabrics diffusion sheet；And common expansion
Discrete piece such as PET diffusion sheet complex manufacturing (former material → be coated with → cut → item frame → assembling), non-woven fabrics diffusion sheet is then no
Similar to the coating process of common diffusion sheet, therefore no this is bad.
(3) production equipment of non-woven fabrics diffusion sheet puts into low, coating for example required for PET diffusion sheet for the common diffusion sheet
Equipment cost is very high；Therefore overall architecture cost advantage is obvious.
(4) common diffusion sheet framework is not suitable for automated production；The blooming piece material that automated production uses is got over
Few getting over is beneficial to produce (mechanical arm that automated production uses is fewer).
(5) the non-woven fabrics diffusion sheet adopting this utility model embodiment to provide, then do not need to reuse diffusion sheet and/or expansion
Fall apart.
(6) non-woven fabrics diffusion sheet process is simple, common diffusion sheet in process of production, complex process, easily scratch, bad
Rate is higher.
(7) body of common diffusion sheet such as PET diffusion sheet belongs to chemical products, is unfavorable for environmental protection.
For diffused component it is desirable to have mist degree (Haze) value of good light transmission and proper range simultaneously.Transparent material
The penetrance of material generally to be characterized using mist degree.The transparent effect of transparent material can be evaluated by measuring mist degree.For example, nonwoven
The mist degree of cloth diffusion sheet is 97%-99.7%, and the light transmittance of non-woven fabrics diffusion sheet is 45%-48%.For example, non-woven fabrics are improved
Mist degree, can improve screening effect, be conducive to atomization to fall lamp shadow；Increase the transmitance of non-woven fabrics, performance of adding lustre to can be improved；Above two
In individual contradiction parameter, find equilibrium point, design parameter.Further for example, light transmittance adopts 48%；Mist degree adopts 99.7%.
For example, as shown in Fig. 2 diffusion particle layer 200 includes resin 201 and the diffusion particle being dispersed in resin 201
202.For example, non-woven fabrics material includes at least one polypropylene and polyethylene.For example, the material of diffusion particle includes poly- methyl-prop
At least one olefin(e) acid formicester (PMMA) and polyethylene terephthalate (PET).For example, the particle size range of diffusion particle is 5 μ
m-10μm.
In embodiment of the present utility model, the surface of at least side of substrate is attached with diffusion particle layer 200, can be such as
Shown in Fig. 2, diffusion particle layer 200 is attached with the surface of the side of substrate, also can be as shown in figure 3, on the both sides of substrate
All it is attached with diffusion particle layer 200, positioned at the diffusion particle of the diffusion particle layer 200 of substrate both sides on two relative surfaces
202 density can be the same or different, and is not limited thereto.
For example, in addition to being attached with diffusion particle on the surface at least side of substrate, in the fiber constituting non-woven fabrics
Gap in also can be attached with diffusion particle, embodiment of the present utility model does not limit to this.
This utility model at least one embodiment provides a kind of backlight module, including any of the above-described diffused component.
The non-woven fabrics diffusion sheet being provided using this utility model embodiment, as diffused component, can substitute common PET
The framework of diffusion sheet+PS diffuser plate.
For example, in order to solve the very sex chromosome mosaicism of non-woven fabrics diffusion sheet assembling, the elastic shrinkage of available non-woven fabrics, by nonwoven
Cloth designed size is less than the size of metal edge frame, non-woven fabrics four side metal item frame design, and metal frame is embedded in framework element for example
In plastic cement frame, to ensure the property endured.For example, as shown in figure 4, backlight module also includes metal frame 02, non-woven fabrics diffusion sheet 01
Edge is fixed on metal frame 02 and so that non-woven fabrics diffusion sheet 01 is tightened.For example, the material of metal frame 02 include rustless steel, aluminum and
Aluminium alloy etc., but not limited to this.In the case that metal frame 02 uses stainless steel, so that non-woven fabrics fixed thereon
Diffusion sheet 01 has preferably endures property.For example, the edge of non-woven fabrics diffusion sheet 01 can be bonded on metal frame 02 by binding agent.
For example, binding agent may include cyanacrylate, but not limited to this.For example, can be by direct for non-woven fabrics diffusion sheet and metal frame
It is directly used in the assembling of backlight module after fixing.
For example, as shown in figure 5, metal frame 02 may be provided in framework element 007.
For example, as shown in fig. 6, backlight module may also include reflecting element 002 and light-emitting component 003, light-emitting component 003
Between non-woven fabrics diffusion sheet 01 and reflecting element 002.Light-emitting component 003 can be located in the cavity of backboard 001.
For example, backlight module is directly to descend illuminaton backlight module.Light-emitting component 003 for example includes multiple LED, multiple
LED may be provided at formation LED lamp bar on circuit board 006.Circuit board 006 for example includes flexible PCB.
This utility model at least one embodiment provides a kind of display device, including any of the above-described backlight module.
For example, display device includes television set, light fixture etc., but not limited to this.
This utility model at least one embodiment provides a kind of manufacture method of diffused component, spreads including making non-woven fabrics
Piece, makes non-woven fabrics diffusion sheet and includes：There is provided non-woven fabrics as substrate, and diffusion is formed on the surface of at least side of substrate
Particle layer.
For example, as shown in Figure 7a, diffusion particle layer is formed on the surface of at least side of substrate to include：There is provided containing expansion
The slurry of shot；Slurry is coated on non-woven fabrics；The non-woven fabrics being coated with slurry dry formation diffusion particle layer.
For example, slurry also includes resin, firming agent and solvent.Resin for example can adopt UV solidified resin, but not limited to this.
For example, resin can account for the 85%-90% of slurry gross weight, and diffusion particle can account for the 5%-8% of slurry gross weight.For example, spread
The particle size range of particle is about 5 μm -10 μm.For example, firming agent and solvent can account for the 5%-8% of slurry gross weight.Firming agent
As catalyst, to accelerate the solidification of resin.Further for example, resin accounts for the 90% of slurry gross weight, and diffusion particle accounts for slurry
The 5% of gross weight, firming agent and solvent account for the 5% of slurry gross weight.
For example, resin includes acrylic resin；The material of diffusion particle includes polymethyl methacrylate (PMMA) and gathers
At least one ethylene glycol terephthalate (PET)；Firming agent includes polyurethane firming agent；Solvent includes toluene, butanone and wine
At least one essence.
It should be noted that the above-mentioned description about material and consumption is simply enumerated, and non-limiting.Also can be adopted other
Material and consumption, embodiment of the present utility model is not construed as limiting to this.
For example, as shown in Figure 7b, in the manufacture method of a kind of diffused component that this utility model one embodiment provides, slurry
Compounding room 701 completes configure, then be placed in coating rewinding room 702 in, can by the way of single spreading, it is of course also possible to
By the way of double spread, slurry is coated on the big coiled strip of non-woven fabrics 7021.The big coiled strip of non-woven fabrics 7021 is placed in bin
On 7022.Can be coated using coating machine 7023, coating machine 7023 is placed in being coated with rewinding room 702, including placement slurry
Container 70231 and coating head 70232.Slurry is placed in the container 70231 place slurry.Place the container 70231 of slurry
In coating head 70232 can be set.Can carry out detecting for the first time 071 after coating sizing-agent, it is whether uniform that detection is coated with.After coating
Non-woven fabrics are placed in the baking oven 7031 of drying chamber 703, can carry out second detection 072 and (for example detect diffusion particle after drying
Whether uniform), whether the diffusion particle layer that detection is formed after drying meets the requirements, and then can carry out on article points collecting machine 7024
Article points and rewinding.Article points collecting machine 7024 is placed in being coated with rewinding room 702.Third time can be carried out after rewinding and detect 073 (for example
Detection non-woven fabrics diffusion sheet mist degree and light transmittance), whether the non-woven fabrics diffusion sheet of detection gained meets the requirements.Need explanation
It is that in this utility model embodiment, the manufacture method of diffused component is not limited to the above-mentioned method providing.
Fig. 8 shows the electron microscopic picture of diffusion particle layer in the diffused component that an embodiment makes, can from figure
Go out, the diffusion particle of diffusion particle layer diffusion particle layer is closely arranged, the particle size range of diffusion particle is about 5 μm -10 μm.
Arbitrary non-woven fabrics diffusion sheet that embodiment of the present utility model provides can replace the frame of diffuser plate+diffusion sheet completely
Structure.Following present the framework using merely non-woven fabrics diffusion sheet of the present utility model and the frame using diffuser plate+diffusion sheet
The test optical data of structure.
In table one and table two, OC refers to display floater (open cell), and L/B refers to lamp bar, and 2835PKG is LED type number,
NTSC refers to GB colour gamut, and B8N81, DJ150, B8N80, KDD188NH are models.
From table one and table two as can be seen that the non-woven fabrics diffusion sheet that embodiment of the present utility model provides can reach light expansion
Scattered effect, compared with the optics framework of PET diffusion sheet+PS diffuser plate, optical parametric difference less, can substitute diffusion completely
The framework of plate+diffusion sheet.When used in table one, non-woven fabrics diffusion sheet makes, resin accounts for the 90% of slurry gross weight, diffusion particle
Account for the 5% of slurry gross weight.For example, the particle size range of diffusion particle is 5 μm -10 μm.For example, to account for slurry total for firming agent and solvent
The 5% of weight.Resin adopts acrylic resin；The material of diffusion particle is polymethyl methacrylate (PMMA)；Firming agent is adopted
Use polyurethane firming agent；Solvent adopts butanone.
Have following some need explanation：
(1) unless otherwise defined, in this utility model embodiment and its accompanying drawing, same label represents same implication.
(2), in this utility model embodiment accompanying drawing, relate only to the structure being related to this utility model embodiment, other
Structure refers to be commonly designed.
(3) for clarity, in the accompanying drawing for describing embodiment of the present utility model, the thickness quilt in layer or region
Amplify.It is appreciated that when the element of such as layer, film, region or substrate etc be referred to as positioned at another element " on " or during D score,
This element can " direct " be located at another element " on " or D score, or there may be intermediary element.
(4) in the case of not conflicting, the feature in difference embodiment of the present utility model and same embodiment can phase
Mutually combine.
The above, specific embodiment only of the present utility model, but protection domain of the present utility model does not limit to
In this, any those familiar with the art, in the technical scope that this utility model discloses, can readily occur in change
Or replace, all should cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with described power
The protection domain that profit requires is defined.
Claims (10)
1. a kind of diffused component is it is characterised in that include non-woven fabrics diffusion sheet, described non-woven fabrics diffusion sheet is with non-woven fabrics as base
Bottom, and diffusion particle layer is attached with the surface of at least side of described substrate, described diffusion particle layer includes resin and divides
It is dispersed in the diffusion particle in described resin.
2. diffused component according to claim 1 is it is characterised in that the mist degree of described non-woven fabrics diffusion sheet is 97%-
99.7%, the light transmittance of described non-woven fabrics diffusion sheet is 45%-48%.
3. diffused component according to claim 1 is it is characterised in that described non-woven fabrics material includes polypropylene and polyethylene
At least one.
4. diffused component according to claim 1 is it is characterised in that the particle size range of described diffusion particle is 5 μm of -10 μ
m.
5. diffused component according to claim 1 is it is characterised in that the material of described diffusion particle includes polymethyl
At least one sour formicester (PMMA) and polyethylene terephthalate (PET).
6. a kind of backlight module is it is characterised in that include the diffused component described in any one of claim 1-5.
7. backlight module according to claim 6 is it is characterised in that also include metal frame, described non-woven fabrics diffusion sheet
Edge is fixed on described metal frame and so that described non-woven fabrics diffusion sheet is tightened.
8. backlight module according to claim 6 is it is characterised in that also include light-emitting component and reflecting element, described
Optical element is located between described non-woven fabrics diffusion sheet and described reflecting element, and described backlight module is directly to descend illuminaton backlight mould
Group.
9. a kind of display device is it is characterised in that include the backlight module described in any one of claim 6-8.
10. display device according to claim 9 is it is characterised in that described display device includes television set or light fixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620802740.1U CN205982698U (en) | 2016-07-27 | 2016-07-27 | Dispersing element, backlight unit and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620802740.1U CN205982698U (en) | 2016-07-27 | 2016-07-27 | Dispersing element, backlight unit and display device |
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| CN205982698U true CN205982698U (en) | 2017-02-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018018910A1 (en) * | 2016-07-27 | 2018-02-01 | 京东方科技集团股份有限公司 | Diffusion element and manufacturing method thereof, backlight module and display device |
| CN108227299A (en) * | 2017-12-29 | 2018-06-29 | 宁波东辉光电科技有限公司 | A kind of downward back photo structure |
| CN110462122A (en) * | 2017-04-06 | 2019-11-15 | 科德宝两合公司 | Element for light manipulation |
| CN110568661A (en) * | 2019-08-14 | 2019-12-13 | 深圳市华星光电技术有限公司 | Diffusion sheet structure |
| WO2022214853A1 (en) | 2021-04-08 | 2022-10-13 | University Of Moratuwa | Method and apparatus for detecting surface defects |
-
2016
- 2016-07-27 CN CN201620802740.1U patent/CN205982698U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018018910A1 (en) * | 2016-07-27 | 2018-02-01 | 京东方科技集团股份有限公司 | Diffusion element and manufacturing method thereof, backlight module and display device |
| CN107664782A (en) * | 2016-07-27 | 2018-02-06 | 京东方科技集团股份有限公司 | Diffused component and preparation method thereof, backlight module and display device |
| US10488707B2 (en) | 2016-07-27 | 2019-11-26 | Boe Technology Group Co., Ltd. | Diffusion element and manufacturing method thereof, backlight module and display device |
| CN110462122A (en) * | 2017-04-06 | 2019-11-15 | 科德宝两合公司 | Element for light manipulation |
| CN110462122B (en) * | 2017-04-06 | 2021-09-24 | 科德宝两合公司 | Element for light manipulation |
| CN108227299A (en) * | 2017-12-29 | 2018-06-29 | 宁波东辉光电科技有限公司 | A kind of downward back photo structure |
| CN110568661A (en) * | 2019-08-14 | 2019-12-13 | 深圳市华星光电技术有限公司 | Diffusion sheet structure |
| CN110568661B (en) * | 2019-08-14 | 2020-10-16 | 深圳市华星光电技术有限公司 | Diffusion sheet structure |
| US11874554B2 (en) | 2019-08-14 | 2024-01-16 | Tcl China Star Optoelectronics Technology Co., Ltd. | Diffusion sheet structure |
| WO2022214853A1 (en) | 2021-04-08 | 2022-10-13 | University Of Moratuwa | Method and apparatus for detecting surface defects |
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Granted publication date: 20170222 |