CN104504944A - Polycarbonate light diffusion film for backlight displaying of mobile phone and preparation method of polycarbonate light diffusion film - Google Patents
Polycarbonate light diffusion film for backlight displaying of mobile phone and preparation method of polycarbonate light diffusion film Download PDFInfo
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- CN104504944A CN104504944A CN201410782310.3A CN201410782310A CN104504944A CN 104504944 A CN104504944 A CN 104504944A CN 201410782310 A CN201410782310 A CN 201410782310A CN 104504944 A CN104504944 A CN 104504944A
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- polycarbonate
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- optical diffusion
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
- G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
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- Optics & Photonics (AREA)
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Abstract
The invention relates to a polycarbonate light diffusion film for backlight displaying of a mobile phone and a preparation method of the polycarbonate light diffusion film, and belongs to the technical field of optical films. The polycarbonate light diffusion film comprises the following raw materials in percentage by mass: 93-98% of polycarbonate main material, 1-7% of organic silicon resin, and 1-7% of PMMA (polymethyl methacrylate) micro powder. The preparation method has the advantages that a special high-mixing and low-mixing matching machine, a special polycarbonate light diffusion master batch machine, an optical film production line and a rolls group with a lens structure are adopted and the polycarbonate light diffusion film is processed and formed at one time in a plastic extrusion way without using chemical liquid additives, such as organic solvents, the harm of organic gas on the environments is avoided, the finished rate is greatly improved, and the cost is obviously reduced; the prepared product is favorable for the subsequent production and processing; two types of products required by backlight diffusion, i.e. a high-transparent type diffusion film and a high-diffusion type diffusion film, can be produced, so as to provide a new selection for the field of LED (light emitting diode) backlight displaying.
Description
Technical field
The invention belongs to optical film technology field, specifically relate to a kind of mobile phone backlight display polycarbonate optical diffusion film and manufacture method, be mainly used in mobile phone, less than 10 inches light displays show product backlight.
Background technology
Current mobile phone, TV, what the light displays such as display showed that product backlight module uses is PET optical diffusion film, and PET optical diffusion film is composite membrane, and PET film applies diffusion coating, and main at present exist 1. and yieldingly affects optical effect; 2. diffusion coating can come off and affect product quality; Another PET optical diffusion film needs organic solvent in process, and process can to environment.
Such as, Chinese patent CN 101887138A discloses a kind of photoelectric diffusion barrier with full photopermeability and good light diffusing, comprise a transparent base, scribble diffusion coating on the surface at least one of transparent base, described transparent base is made up of optically transparent material, described diffusion coating comprises resin binder, be dispersed with organosilicon spherical resin and PMMA resin in described resin binder, described transparent base, can PET be chosen, polycarbonate, the one in PS is made.This photoelectric diffusion barrier has photoelectric diffusion barrier and has very high full permeability and good light diffusing.But, employ acrylic copolymer that the acrylic monomers of hydroxyl and polyisocyanate train in this diffusion barrier as resin binder, can not effectively prevent the pollution of the environment.
By research and development material and technology, to solve existing PET diffusion barrier yielding in the present invention, and diffusion coating comes off and three technical matterss of environmental pollution.
Summary of the invention
Yielding in order to solve existing PET diffusion barrier, diffusion coating comes off and three technical matterss of environmental pollution, the invention provides a kind of mobile phone backlight display polycarbonate optical diffusion film and manufacture method.
Technical scheme of the present invention is as follows:
Polycarbonate optical diffusion film is used in a kind of mobile phone backlight display, it is characterized in that: raw material and the mass percent of described polycarbonate optical diffusion film are as follows:
Polycarbonate 93% ~ 98%
Organic siliconresin 1% ~ 7%
PMMA micro mist 1% ~ 7%.
In a preferred technical scheme, the raw material of described polycarbonate optical diffusion film and mass percent are polycarbonate 93.5%, organic siliconresin 4%, PMMA micro mist 2.5%.
In a preferred technical scheme, the raw material of described polycarbonate optical diffusion film and mass percent are polycarbonate 94%, organic siliconresin 4.5%, PMMA micro mist 1.5%.
In a preferred technical scheme, the raw material of described polycarbonate optical diffusion film and mass percent are polycarbonate 94.5%, organic siliconresin 4.5%, PMMA micro mist 1.0%.
In a preferred technical scheme, the particle diameter of described organic siliconresin is 2 μm ~ 4 μm.
In a preferred technical scheme, the particle diameter of described PMMA micro mist is 3 μm ~ 5 μm.
A preparation method for mobile phone backlight display polycarbonate optical diffusion film, it is characterized in that, concrete steps are as follows:
(1) Masterbatch is made: by organic siliconresin, PMMA micro mist fully mixes with the polycarbonate pellet of 20wt% ~ 25wt%, enters Masterbatch machine, by its high-temperature fusion, extrude through circulation pipeline again and cool and be cut into pellet, as the Masterbatch making optical diffusion film;
(2) prepare burden: the Masterbatch containing organic siliconresin and PMMA micro mist and remaining polycarbonate pellet are fully mixed to scale;
(3) melting: above abundant mixed starting material are added in the melt chamber of equipment by predetermined speed, melting at a predetermined temperature;
(4) curtain coating: the starting material of melting are extruded along extrusion die road by certain amount, is flowed out by the die lip adjusting thickness;
(5) roll: the melting original material that die lip flows out flows into stack group, is adjusted the calendering in gap to being rolled into the uniform film of thickness by a few place; Adopt the roller group with optical lens structure, optical texture is directly replicated in film surface in calender line;
(6) cool: through chill roll, normal temperature is cooled to the film that temperature not yet disappears;
(7) multiple diaphragm: in order to ensure the cleanliness factor of optical diffusion film, composite protection film;
(8) trimming: by product by the trimming of regulation wide cut, be one of step of finished product;
(9) rolling: by large for product harvest volume;
(10) check: carry out product quality inspection;
(11) pack: the product be up to the standards is carried out finished product packaging according to user's request;
(12) put in storage.
Technique effect of the present invention is as follows:
1. production process of the present invention is without the need to using solvent and binder resin, prevents processing procedure to the pollution of environment on the one hand, and quality stability is higher on the other hand.
2. the present invention uses optical property more excellent, the better polycarbonate of dimensional stability is as main material, replace the PET resin that tradition uses, select three kinds of specific proportionings of raw material can produce the product of high-transparency diffusion barrier and high expansion type diffusion barrier two kinds of backlight diffusion needs, traditional application type PET diffusion barrier can only produce high expansion type diffusion barrier.
3. use organic siliconresin as auxiliary material as diffusion material, ratio gets over high diffusivity effect promoting; Use PMMA micro mist mainly to play anti-reflection effect, ratio is got over high diffusivity effect and is reduced.
4., compared to traditional handicraft, realize adding lustre to and the effect spread further by making optical lens structure at product surface in forming process, the finished product yield of one-shot forming technique technology significantly promotes, and cost significantly declines; Goods are more conducive to subsequent production processing.
5. this product adopts polycarbonate to be main material, is different from traditional PET diffusion barrier completely, for LED-backlit display field provides new selection.
Embodiment
A kind of mobile phone backlight display polycarbonate optical diffusion film of the present invention and preparation method thereof is explained below in conjunction with embodiment.
Raw material and the mass percent of polycarbonate optical diffusion film of the present invention are as follows:
Polycarbonate 93% ~ 98%
Organic siliconresin 1% ~ 7%
PMMA micro mist 1% ~ 7%.
Raw material: polycarbonate Japan Supreme Being people changes into
Organic siliconresin SHIN-ETSU HANTOTAI organosilicon particle diameter 2 μm ~ 4 μm
PMMA micro mist is combined and is ground chemical particle diameter 3 μm ~ 5 μm
Specialized equipment: high mixed low mixture closes unit; Polycarbonate light diffusion master batch special machine; Optical thin film production line; There is the roller group of lens arrangement.
Plastic extrusion process is one-shot forming, does not need with an organic solvent to wait chemical liquid auxiliary agent, does not have organic gas to endanger to environment.
The processing step of preparation 60 μm of polycarbonate optical diffusion films is as follows:
(1) Masterbatch is made: by organic siliconresin, PMMA micro mist fully mixes with the polycarbonate pellet of 20wt% ~ 25wt%, enters Masterbatch machine, by its high-temperature fusion, extrude through circulation pipeline again and cool and be cut into pellet, as the Masterbatch making optical diffusion film;
(2) prepare burden: the Masterbatch containing organic siliconresin and PMMA micro mist and remaining polycarbonate pellet are fully mixed to scale;
(3) melting: above abundant mixed starting material are added in the melt chamber of equipment by predetermined speed, melting at a predetermined temperature;
(4) curtain coating: the starting material of melting are extruded along extrusion die road by certain amount, is flowed out by the die lip adjusting thickness;
(5) roll: the melting original material that die lip flows out flows into stack group, is adjusted the calendering in gap to being rolled into the uniform film of thickness by a few place; Adopt the roller group with optical lens structure, optical texture is directly replicated in film surface in calender line;
(6) cool: through chill roll, normal temperature is cooled to the film that temperature not yet disappears;
(7) multiple diaphragm: in order to ensure the cleanliness factor of optical diffusion film, composite protection film;
(8) trimming: by product by the trimming of regulation wide cut, be one of step of finished product;
(9) rolling: by large for product harvest volume;
(10) check: carry out product quality inspection;
(11) pack: the product be up to the standards is carried out finished product packaging according to user's request;
(12) put in storage.
The 60 μm of polycarbonate optical diffusion film materials prepared are carried out performance test, and test result is as shown in table 1.
60 μm of polycarbonate optical diffusion film testing of materials results that table 1 prepares
Although the present invention has done detailed description, and provide some instantiations, those skilled in the art are said, only otherwise leaving the spirit and scope of the present invention can do various change or correction is obvious.
Claims (7)
1. a polycarbonate optical diffusion film is used in mobile phone backlight display, it is characterized in that: raw material and the mass percent of described polycarbonate optical diffusion film are as follows:
Polycarbonate 93% ~ 98%
Organic siliconresin 1% ~ 7%
PMMA micro mist 1% ~ 7%.
2. a kind of mobile phone backlight display polycarbonate optical diffusion film according to claim 1, is characterized in that: the raw material of described polycarbonate optical diffusion film and mass percent are polycarbonate 93.5%, organic siliconresin 4%, PMMA micro mist 2.5%.
3. a kind of mobile phone backlight display polycarbonate optical diffusion film according to claim 1, is characterized in that: the raw material of described polycarbonate optical diffusion film and mass percent are polycarbonate 94%, organic siliconresin 4.5%, PMMA micro mist 1.5%.
4. a kind of mobile phone backlight display polycarbonate optical diffusion film according to claim 1, is characterized in that: the raw material of described polycarbonate optical diffusion film and mass percent are polycarbonate 94.5%, organic siliconresin 4.5%, PMMA micro mist 1.0%.
5. a kind of mobile phone backlight display polycarbonate optical diffusion film according to any one of Claims 1 to 4 claim, is characterized in that: the particle diameter of described organic siliconresin is 2 μm ~ 4 μm.
6. a kind of mobile phone backlight display polycarbonate optical diffusion film according to any one of Claims 1 to 4 claim, is characterized in that: the particle diameter of described PMMA micro mist is 3 μm ~ 5 μm.
7. the preparation method for polycarbonate optical diffusion film of the mobile phone backlight display described in any one of claim 1 ~ 6 claim, it is characterized in that, concrete steps are as follows:
(1) Masterbatch is made: by organic siliconresin, PMMA micro mist fully mixes with the polycarbonate pellet of 20wt% ~ 25wt%, enters Masterbatch machine, by its high-temperature fusion, extrude through circulation pipeline again and cool and be cut into pellet, as the Masterbatch making optical diffusion film;
(2) prepare burden: the Masterbatch containing organic siliconresin and PMMA micro mist and remaining polycarbonate pellet are fully mixed to scale;
(3) melting: above abundant mixed starting material are added in the melt chamber of equipment by predetermined speed, melting at a predetermined temperature;
(4) curtain coating: the starting material of melting are extruded along extrusion die road by certain amount, is flowed out by the die lip adjusting thickness;
(5) roll: the melting original material that die lip flows out flows into stack group, is adjusted the calendering in gap to being rolled into the uniform film of thickness by a few place; Adopt the roller group with optical lens structure, optical texture is directly replicated in film surface in calender line;
(6) cool: through chill roll, normal temperature is cooled to the film that temperature not yet disappears;
(7) multiple diaphragm: in order to ensure the cleanliness factor of optical diffusion film, composite protection film;
(8) trimming: by product by the trimming of regulation wide cut, be one of step of finished product;
(9) rolling: by large for product harvest volume;
(10) check: carry out product quality inspection;
(11) pack: the product be up to the standards is carried out finished product packaging according to user's request;
(12) put in storage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410782310.3A CN104504944A (en) | 2014-12-16 | 2014-12-16 | Polycarbonate light diffusion film for backlight displaying of mobile phone and preparation method of polycarbonate light diffusion film |
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| CN201410782310.3A CN104504944A (en) | 2014-12-16 | 2014-12-16 | Polycarbonate light diffusion film for backlight displaying of mobile phone and preparation method of polycarbonate light diffusion film |
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| CN104504944A true CN104504944A (en) | 2015-04-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108819158A (en) * | 2018-05-17 | 2018-11-16 | 浙江彩丞照明科技有限公司 | A kind of anti-dazzle light diffusing sheet integrated molding production technology |
| CN113504591A (en) * | 2021-07-08 | 2021-10-15 | 江西盛汇光学科技协同创新有限公司 | Diffusion brightening composite optical membrane and preparation method thereof |
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| CN102490366A (en) * | 2011-12-03 | 2012-06-13 | 大连塑料研究所有限公司 | Process and equipment for continuously producing and molding dual-extrusion current coating plastic clip net film products |
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| CN101776777A (en) * | 2009-07-24 | 2010-07-14 | 苏州奥美光学材料有限公司 | Light diffusion polycarbonate film or sheet and manufacturing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108819158A (en) * | 2018-05-17 | 2018-11-16 | 浙江彩丞照明科技有限公司 | A kind of anti-dazzle light diffusing sheet integrated molding production technology |
| CN113504591A (en) * | 2021-07-08 | 2021-10-15 | 江西盛汇光学科技协同创新有限公司 | Diffusion brightening composite optical membrane and preparation method thereof |
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Application publication date: 20150408 |
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