CN103224640B - Preparation method of diffusion brightening film - Google Patents
Preparation method of diffusion brightening film Download PDFInfo
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- CN103224640B CN103224640B CN201210023531.3A CN201210023531A CN103224640B CN 103224640 B CN103224640 B CN 103224640B CN 201210023531 A CN201210023531 A CN 201210023531A CN 103224640 B CN103224640 B CN 103224640B
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- 238000009792 diffusion process Methods 0.000 title claims abstract description 51
- 238000005282 brightening Methods 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims abstract description 7
- 229920002284 Cellulose triacetate Polymers 0.000 claims abstract description 3
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 claims abstract description 3
- 239000011347 resin Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 11
- 239000003595 mist Substances 0.000 claims description 8
- 238000002834 transmittance Methods 0.000 claims description 8
- 238000005286 illumination Methods 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000003847 radiation curing Methods 0.000 claims description 3
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 2
- 229920002799 BoPET Polymers 0.000 abstract 1
- 239000002202 Polyethylene glycol Substances 0.000 abstract 1
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 229920001223 polyethylene glycol Polymers 0.000 abstract 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 206010015958 Eye pain Diseases 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011284 combination treatment Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
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- Laminated Bodies (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention relates to a preparation method of a diffusion brightening film, the diffusion brightening film is composed of a base film, a brightening layer and a diffusion layer, a diffusion coating with unevenness is processed on the lower surface of a transparent film base material triacetyl cellulose TAC film or a polyethylene glycol terephthalate PET film (the above film is short for the base material film in the following content), an isosceles trapezoid structure is coated on the upper surface of the base material film, so that the diffusion brightening film has function for increasing and enhancing the light.
Description
Technical field
The present invention relates to a kind of preparation method of auxiliary facility structural membrane of LED, refer specifically to a kind of can increase LED lamplight brightness while, enable LED light softer, uniform to space diffusion, significantly can save the preparation method of the diffusion brightening film of the energy and raising LED performance.
Background technology
The luminous sub-prime of LED is generally very narrow at the illumination angle less than 120 degree of light, although there is good light harvesting, because its briliancy is too strong, light source close to point-like, as the replacement instrument of luminescent lamp, the series of problems such as ocular pain, light source irradiation face can be caused little; Again because the quantity of light emission of a LED is less than equal luminescent lamp or the light of CCFL, as the light quantity with luminescent lamp or CCFL equal extent will be reached, the LED of plural number must be used.LED lamplight brightness in the market has the deviation of positive and negative 15%, if after using the LED means of illumination of plural number, can there is brightness and briliancy offset issue.This problem, can solve by strictly selecting LED in theory, but finally can cause the cost increase of producer, and a large amount of generations of defective products.At this moment in the design of means of illumination, just the treatment unit that the light emitted by several LED can be carried out homogeneous mixing is needed.This mixing device is normally made up of one piece of white lampshade plate, its thickness is 1mm-5mm, in order to avoid luminous energy is too many at lampshade wastes interior, its transmittance will control within the specific limits, simultaneously in order to reach the focal point that can't see inner LED, the object making light exhale to greatest extent, to make light increase its lighting angle after rete scattering.Although so homogeneous light of combination treatment device energy, because it is blocked up, will inevitably lose the luminous energy of a part, thus cause the strength reduction of light.
Summary of the invention
In order to solve Problems existing in above technology, the present invention has made following technical solution.
The present invention is made up of substrate film, brightness enhancement layer and diffusion layer, be processed at the lower surface of transparent film substrate triacetyl cellulose TAC film or polyethylene terephtalate film (above-mentioned film in following content all referred to as base material film) and there is rough diffusion coating, at the upper surface coating isosceles trapezoidal structure of its material film, make it have the function increasing and strengthen light.
The surperficial number of the Asperity model of diffusion coating is 50-150/mm
2light diffusion function is made because it has rough surface, in order to avoid light source loses through causing luminance brightness during base material film, base material film is necessary for transparent film, its full light penetration rate is 80-98%, mist degree is 0.8%-20%, and the thickness of base material film is 25 μm-2000 μm, and wherein 50 μm-250 μm is optimum thickness.
The resin of what the present invention was used have diffusion function is that one has scratch-resistant character UV irradiation line hardening resin, transparent film surface can being made after coating to have the pencil hardness of HB-5H, not needing heating, separately by adding other auxiliary agents to increase function.UV irradiation type hardening resin is cured processing by ultraviolet illumination, and technique is simple, and production efficiency is high.
The average boldness on diffusion layer surface is 0.2 μm-200 μm, and the rugosity of medullary ray is less than 0.2 μm, and the diameter of Asperity model is 0.5 μm-100 μm, and thickness is 3 μm-50 μm.Wherein Asperity model size must be consistent, otherwise under light source irradiation, there will be credit point, do not reach and make light source mix homogeneous effect.
After diffusion complete processing, the full light transmittance of base material film is 70-90%, and mist degree is 8%-30%.Wherein the less diffusion effect of mist degree weakens, and light transmittance increases; The larger diffusion effect of mist degree is better, but corresponding light transmittance reduces, and light source utilization rate is had a greatly reduced quality.
As Fig. 1, the another side of base material film is coated with isosceles trapezoidal structure, makes because it has isosceles trapezoidal structure the light being incident upon each isosceles trapezoid two waist surface arrive roundtrip mutually, thus add the brightness of light and the function of intensity.
The resin of brightness enhancement layer is UV light radiation-curing type resin, and diffusion layer is same UV gel-type resin, without any change in performance.UV light radiation-curing type resin must have good then performance with base material film, hundred lattice test I SO standards more than 1 grade or 1 grade, and without coming unstuck, symptom occurs.
Brightness enhancement layer structure is necessary for isosceles trapezoid, its top be bottom 1/10th to eighth width, be convenient to have certain bonding space and dynamics with the film of other operations or template object, and there is the function of secondary light ray diffusion.When top be greater than bottom eight/for the moment, its light source loss will significantly strengthen, and is less than ten/for the moment, and light can be too concentrated, reduces diffusion layer effect.
Isosceles trapezoid drift angle is between 100 °-150 °, bottom width 10 μm-40 μm, high 5 μm-22 μm, top width is 1 μm of-5mm, to ensure that isosceles trapezoid has enough height, unnecessary scattered beam is made to reflect back recycling again by adjacent isosceles trapezoid and not weaken the brightening effect of isosceles trapezoid.
The spacing at adjacent trapezoidal top is 9 μm-150 μm, and this distance is necessary for equal pitch, if the not equivalent phenomenon that just there will be light source inequality.
Available refracted light can be increased 20%-60%, the luminous energy of maximum increase by 44% by this brightening structure.(the most high transmission rate of diffusion layer adds the most high refractive index of brightness enhancement layer)
Manufacturing process is coated with brightness enhancement layer after being necessary for and being first coated with diffusion layer again.Otherwise the structure of brightness enhancement layer can be destroyed when being coated with diffusion layer.
Diffusion layer towards the light source of LED, after the point-like of LED being concentrated the homogeneous diffusion of light source, then will increase briliancy and light diffusion angle by brightness enhancement layer.
After processing, the total thickness of base material film is 33 μm-1072 μm.
As Fig. 1, diffusion structure and brightening structure are implemented in the two sides of same film respectively, reduce the thickness of film significantly, reduce cost, energy-conserving and environment-protective.
Accompanying drawing illustrates:
Fig. 1 is composite structure figure of the present invention.
Fig. 2 is composition principle figure of the present invention.
Embodiment:
As Fig. 1, the present invention is made up of substrate film 1, brightness enhancement layer 2 and diffusion layer 3.
Be 90% at full light transmittance, mist degree be 2% base material film on be coated with, the surperficial number of its Asperity model is 80/mm
2below, average boldness is 0.5 μm, and the rugosity of medullary ray is less than 0.2 μm, and the mean diameter of Asperity model is 5 μm, and thickness is the diffusion layer of 6 μm.
After above-mentioned processing, the full light transmittance of base material film 1 is 88%, and mist degree is 12%, and thickness is 105 μm.
Then carry out brightness enhancement layer 2 on the surface of base material film 1 to be coated with, in the isosceles trapezoid be coated with, drift angle is 130 °, and top width is 5 μm, bottom width 40 μm, the isosceles trapezoid of high 22 μm, and the spacing at adjacent isosceles trapezoid top is the brightness enhancement layer 2 of 35 μm.
As Fig. 2, when LED light line is by diffusion layer 3, its light intensity attenuation is 88%, but light is spread completely.When the light be diffused is injected into brightness enhancement layer 2, light, through superrefraction, reflects, and after scattering, not only increases the transmittance of 60%, also increase the angle of diffusion light further.
Therefore, LED lamplight, by after diffusion brightening film, adds the brightness of 40%, is distributed in light-emitting zone by uniform light simultaneously than original light.
Claims (7)
1. the preparation method of a LED diffusion brightening film, be made up of substrate film, brightness enhancement layer and diffusion layer, be processed at the lower surface of base material film and there is rough diffusion coating, at the upper surface coating isosceles trapezoidal structure of its material film, make it have the function increasing and strengthen light, described isosceles trapezoid top is 1/1 to eight/10th of bottom width, in isosceles trapezoid, drift angle is between 100 °-150 °, bottom width 10 μm-40 μm, high 5 μm-22 μm, top width is 1 μm of-5mm; The spacing at each adjacent trapezoidal top is consistent, and is 9 μm-150 μm.
2., by the preparation method of a kind of LED diffusion brightening film according to claim 1, it is characterized in that the surperficial number of its Asperity model is 50-150/mm
2, make it have light diffusion function, in order to avoid light source loses through causing luminance brightness during base material film, base material film is necessary for transparent film, and its full light penetration rate is 80-98%, and mist degree is 0.8%-20%, and the thickness of base material film is 25 μm-2000 μm.
3. by the preparation method of a kind of LED diffusion brightening film according to claim 1, it is characterized in that, the thickness of base material film is 50 μm-250 μm.
4. by the preparation method of a kind of LED diffusion brightening film according to claim 1, it is characterized in that diffusion layer is made up of UV irradiation type hardening resin, processing is cured by ultraviolet illumination, after diffusion complete processing, the full light transmittance of base material film is 70-90%, and mist degree is 8%-30%.
5. by the preparation method of a kind of LED diffusion brightening film according to claim 1, it is characterized in that building brightness enhancement layer resin be UV light radiation-curing type resin, and diffusion layer is same UV gel-type resin, without any difference in performance.
6. by the preparation method of a kind of LED diffusion brightening film according to claim 1, it is characterized in that available refracted light can be increased by 20%-60% by this brightness enhancement layer, the luminous energy of maximum increase by 44%, manufacturing process is coated with brightness enhancement layer after being necessary for and being first coated with diffusion layer again, otherwise the structure of brightness enhancement layer can be destroyed when being coated with diffusion layer, diffusion layer towards LED light source, after homogeneous for the point source of light of LED diffusion, then will increase briliancy and light diffusion angle by brightness enhancement layer.
7., by the preparation method of a kind of LED diffusion brightening film according to claim 1, it is characterized in that substrate film is triacetylcellulose film TAC and pet film PET.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210023531.3A CN103224640B (en) | 2012-01-27 | 2012-01-27 | Preparation method of diffusion brightening film |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210023531.3A CN103224640B (en) | 2012-01-27 | 2012-01-27 | Preparation method of diffusion brightening film |
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| CN103224640A CN103224640A (en) | 2013-07-31 |
| CN103224640B true CN103224640B (en) | 2015-01-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170115433A1 (en) * | 2015-10-21 | 2017-04-27 | Sangbo Corporation | Multilayer optical sheet assembly |
| CN107013827A (en) * | 2016-12-29 | 2017-08-04 | 中山市光大光学仪器有限公司 | Anti-dazzle lighting apparatus |
| CN108445662A (en) * | 2018-04-27 | 2018-08-24 | 康惠（惠州）半导体有限公司 | The liquid crystal display of anti-short circuit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2898855Y (en) * | 2006-01-24 | 2007-05-09 | 科桥电子股份有限公司 | Intensifying diffusion structure |
| CN201247365Y (en) * | 2008-07-14 | 2009-05-27 | 上海赞高光学材料有限公司 | Optical compound film and LCD device using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2011059530A (en) * | 2009-09-11 | 2011-03-24 | Entire Technology Co Ltd | Optical thin plate |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2898855Y (en) * | 2006-01-24 | 2007-05-09 | 科桥电子股份有限公司 | Intensifying diffusion structure |
| CN201247365Y (en) * | 2008-07-14 | 2009-05-27 | 上海赞高光学材料有限公司 | Optical compound film and LCD device using the same |
Non-Patent Citations (2)
| Title |
|---|
| JP特開2011-059530A 2011.03.24 * |
| LCD增亮膜专利技术分析;王凤岐;《信息记录材料》;20101231;第11卷(第2期);47-58 * |
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Granted publication date: 20150107 |