CN103389531A - Reflecting film manufacturing method and backlight module - Google Patents
Reflecting film manufacturing method and backlight module Download PDFInfo
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- CN103389531A CN103389531A CN2012103397447A CN201210339744A CN103389531A CN 103389531 A CN103389531 A CN 103389531A CN 2012103397447 A CN2012103397447 A CN 2012103397447A CN 201210339744 A CN201210339744 A CN 201210339744A CN 103389531 A CN103389531 A CN 103389531A
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Abstract
The invention discloses a reflecting film manufacturing method. The reflecting film manufacturing method comprises the steps: 1 coating a photo-curing glue solution on the surface of a reflecting film base body; 2 simultaneously performing film pressing and ultraviolet curing operation to the reflecting film base body to manufacture microstructural light reflecting and guiding points capable of diffusing light on the surface of the reflecting film base body. By adopting the reflecting film manufacturing method, a light guiding plate can be omitted, net point arrangement can be performed, the operation that net points are manufactured through the light guiding plate in a printing mode is completely avoided, the corrosive effect of a chemical reagent to the light guiding plate is reduced, and the quality of the light guiding plate is improved, and the service life of the light guiding plate is prolonged. The invention further provides a backlight module. The backlight module comprises a reflecting film, wherein the surface of the reflecting film is provided with the microstructural light reflecting and guiding points capable of diffusing the light. The backlight module is manufactured by adopting the reflecting film manufacturing method, a net point structure generating process of the backlight module is simple, and the manufacture cost of the backlight module can be effectively reduced.
Description
Technical field
The present invention relates to the reflectance coating technical field, more particularly, particularly a kind of method for making of reflectance coating and a kind of backlight module.
Background technology
Along with the arriving of digital Age, liquid crystal display (LCD) has become the most general current display technique.Because LCD has environmental protection, consume energy low, low radiation, the advantage such as picture is soft, so LCD will be the display technique of main flow in coming few decades.LCD is non-luminiferous display device, need just can reach the function of demonstration by backlight.The quality of backlight performance is except meeting directly affects LCD video picture quality, and the cost of backlight accounts for the 3-5% of LCD module, and the electric power that consumes more accounts for 75% of module, is considerable spare part in the LCD module.Fine, large-sized LCD, must have high performance backlight technology to coordinate with it, and therefore when the LCD industry was made great efforts the new application of developing, the high performance of backlight technology was also being played the part of person who has rendered outstanding service's behind the scenes role.
The main member of backlight system comprises: light source, light guide plate, all kinds of blooming piece.At present light source mainly contains EL, CCFL and LED three types, according to distribution of light sources position difference, can be divided into two kinds of side-light type and straight-down negatives.Constantly to brighter, lighter, thinner future development, side-light type CCFL formula backlight becomes the main flow of present backlight development along with the LCD module.
In the backlight system, blooming piece mainly comprises three kinds of reflectance coating, diffusion barrier and brightness enhancement film.The Main Function of reflectance coating is the reflectivity that improves optical surface, will spill the light high-level efficiency of light guide plate bottom and without consume ground, reflect, thereby reduce the light consume, reduces power consumption, improves the light saturation degree of LCD.The Main Function of diffusion barrier is the light that will appear from light guide plate, sees through diffusion particle and reaches the effect of atomizing light source., can pass in the different medium of refractive index through diffusion layer the time when light, this different refractivity and incident angle difference will make light that many refractions, reflection and scattering phenomenon occur, and can revise light and become uniform area light source to reach the effect of optics diffusion.
The major function of light guide plate (Light Guide Plate) is that the pointolite of incident or line source are become whole upper equally distributed area source, the light diffusion and deflection that through diffusion barrier, light guide plate are penetrated afterwards, make light at both direction light harvesting in length and breadth and adjust the divergence of beam angle via two light harvesting prism films more finally.Therefore major function is the needed direction with light navigation designing person, coordinates the needs of backlight module.Most important index is brightness and the homogeneity of leaded light.It is dull and stereotyped that existing light guide plate shape used mostly is, and can reduce thickness, and it is from CCFL or LED that printing distributes, by little and large, by thin and close expansion.
When light guide plate is a tabula rasa, top and bottom are during without any embossment structure, and brightness all concentrates on LED one side, and away from the total reflection due to light guide plate inside of the position of LED, light almost penetrates from upper surface, all from the rear end face outgoing, has consumed.The main following four kinds of modes that have are processed light guide plate now, and the pointolite of incident or line source are become whole upper equally distributed area source, and it is respectively:
1, formula printing light guide plate at random, make incident light at random in the deep or light site of bottom surface of light guide plate printing white;
2, formula ejection formation light guide plate at random, utilize the fine etching technology that the core rod microfabrication of ejection formation is become site, and the recycling plastic injection molding machine is manufactured light guide plate;
3, reflective ejection formation light guide plate, utilize Ultraprecision Machining to make fine optical mirror plane at bottom surface of light guide plate, and as 100 microns of diameters, the microlens structure that height is 10 microns, make the light reflection in light guide plate, thereby the light guide plate attenuation is reduced costs;
4, refraction type ejection formation light guide plate is mainly the improvement reflecting light conductive plate;
Make these sites on light guide plate, difficulty is larger, and cost compare is high.Particularly by printing, make site, chemical reagent has certain corrosive attack to light guide plate, reduces the quality of light guide plate, reduces the serviceable life of light guide plate.
Summary of the invention
Method for making and a kind of backlight module of the technical problem to be solved in the present invention for a kind of reflectance coating is provided, the reflectance coating that uses in this backlight module is made by the method for making of reflectance coating provided by the invention, can generate reflective, light guiding points on reflectance coating, thereby improve the quality of light guide plate, increase the serviceable life of light guide plate.
For solving the problems of the technologies described above, the invention provides a kind of method for making of reflectance coating, comprise step:
S1: the surface at the reflectance coating matrix applies the photocuring glue;
S2:, by described reflectance coating matrix being carried out simultaneously press mold and ultraviolet curing operation, produce on the surface of described reflectance coating matrix and can carry out to light that the microstructure of scattering is reflective, light guiding points.
Preferably, the white PET polyester film of described reflectance coating matrix adopting after two-way stretch is processed.
Preferably, the glue of described photocuring glue for by UV glue, titania, barium sulphate mixing viscous fluid, being mixed.
Preferably, described UV glue is formed and is formed by acrylic ester compound, solvent, spreading agent and whiteruss.
Preferably, described photocuring glue by massfraction is: the light reflection function filler of the mixed solvent of the urethane acrylate of 15-30%, the polyester acrylate of 30-50%, 10-15%, 15-26%, the whiteruss of 0.5-1.5%, the spreading agent of 0.5-1.0% and the light trigger of 2.5-4.0% mix; Wherein, functional stuffing is titania, and barium sulphate, its mass ratio are 2: 1.
Preferably, described mixed solvent is served as reasons: cyclohexanone, butyl acetate, ethyl acetate, toluene are 2: 1: 1 according to quality than ratio: 2 mix.
The present invention also provides a kind of backlight module, comprises reflectance coating, and the surface of described reflectance coating has carries out to light that the microstructure of scattering is reflective, light guiding points.
The invention provides a kind of method for making of reflectance coating, comprise step:
S1: apply the photocuring glue, on the surface of reflectance coating matrix, apply the photocuring glue, in the present invention, the reflectance coating finished product that provides in prior art can be provided the reflectance coating matrix, preferably adopts the white reflection film with microcellular structure;
S2: press mold and curing operation,, by the reflectance coating matrix being carried out simultaneously press mold and ultraviolet curing operation, produce on the surface of reflectance coating matrix and can carry out to light that the microstructure of scattering is reflective, light guiding points.
Reflectance coating is on common reflectance coating, and the mode by anilox roll applies last layer photocuring glue, afterwards, then, with the accurate template impression that is furnished with site,, simultaneously through ultraviolet irradiation, solidifies gained.The method for making of reflectance coating provided by the invention, coating one deck photocuring glue on the basis of reflectance coating matrix (reflectance coating), again with template impression, ultra-violet curing, thereby form reflective, the light guiding points that light is carried out scattering process that have of some on the surface of reflectance coating, be used for as the lattice point structure on the prior art light guide plate.Adopt this method, can omit light guide plate and carry out the site setting, avoided light guide plate to make the operation of site by printing fully, reduced the corrosive attack of chemical reagent to light guide plate, improved the quality of light guide plate, increased the serviceable life of light guide plate.
The present invention also provides a kind of backlight module, comprises reflectance coating, and the surface of reflectance coating has carries out to light that the microstructure of scattering is reflective, light guiding points.Backlight module provided by the invention adopts the method for making of above-mentioned reflectance coating to make, can be by lattice point structure be set on reflectance coating, avoid making on light guide plate, make the technique of backlight module generation lattice point structure provided by the invention simple, can effectively reduce the manufacturing cost of backlight module.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to the accompanying drawing that provides other accompanying drawing.
Fig. 1 is the process flow diagram of the method for making of reflectance coating in an embodiment of the present invention.
Embodiment
Method for making and a kind of backlight module of core of the present invention for a kind of reflectance coating is provided, the reflectance coating that uses in this backlight module is made by the method for making of reflectance coating provided by the invention, can generate reflective, light guiding points on reflectance coating, thereby improve the quality of light guide plate, increase the serviceable life of light guide plate.
In order to make those skilled in the art understand better technical scheme of the present invention, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1, Fig. 1 is the process flow diagram of the method for making of reflectance coating in an embodiment of the present invention.
The invention provides a kind of method for making of reflectance coating, comprise step:
S1: apply the photocuring glue, on the surface of reflectance coating matrix, apply the photocuring glue, in the present invention, the reflectance coating finished product that provides in prior art can be provided the reflectance coating matrix, preferably adopts the white reflection film with microcellular structure;
S2: press mold and curing operation,, by the reflectance coating matrix being carried out simultaneously press mold and ultraviolet curing operation, produce on the surface of reflectance coating matrix and can carry out to light that the microstructure of scattering is reflective, light guiding points.
Reflectance coating is on common reflectance coating, and the mode by anilox roll applies last layer photocuring glue, afterwards, then, with the accurate template impression that is furnished with site,, simultaneously through ultraviolet irradiation, solidifies gained.
The method for making of reflectance coating provided by the invention, coating one deck photocuring glue on the basis of reflectance coating matrix (reflectance coating), again with template impression, ultra-violet curing, thereby form reflective, the light guiding points that light is carried out scattering process that have of some on the surface of reflectance coating, be used for as the lattice point structure on the prior art light guide plate.Adopt this method, can omit light guide plate and carry out the site setting, avoided light guide plate to make the operation of site by printing fully, reduced the corrosive attack of chemical reagent to light guide plate, improved the quality of light guide plate, increased the serviceable life of light guide plate.
Particularly, in one embodiment of the invention, the white PET polyester film of reflectance coating matrix adopting after two-way stretch is processed.
In a specific embodiment of the present invention, the glue of photocuring glue for by UV glue, titania, barium sulphate mixing viscous fluid, being mixed.
In another embodiment of the present invention, UV glue is combined by acrylic ester compound, solvent, spreading agent and whiteruss.
Particularly, the photocuring glue by massfraction is: the light reflection function filler of the mixed solvent of the urethane acrylate of 15-30%, the polyester acrylate of 30-50%, 10-15%, 15-26%, the whiteruss of 0.5-1.5%, the spreading agent of 0.5-1.0% and the light trigger of 2.5-4.0% mix; Wherein, functional stuffing is titania, and barium sulphate, its mass ratio are 2: 1.
Particularly, mixed solvent is served as reasons: cyclohexanone, butyl acetate, ethyl acetate, toluene are 2: 1: 1 according to quality than ratio: 2 mix.
At this of particular note: as white PET polyester of the present invention, by contain micro air bubble whitening gained in film inside.Micro air bubble, by be scattered in the inconsistent high-melting-point polymer of polyester or inorganic particles in polyester, then carries out two-way stretch with it, forms bubble when stretching around particle.
The photocuring glue is that UV glue, titania, barium sulphate mixing viscous fluid solidify the glue that forms, and the diameter of the microstructure after curing is 0.05-0.5mm, is highly 0.01-0.5mm.
The present invention also provides a kind of backlight module, comprises reflectance coating, and the surface of reflectance coating has carries out to light that the microstructure of scattering is reflective, light guiding points.Backlight module provided by the invention adopts the method for making of above-mentioned reflectance coating to make, can be by lattice point structure be set on reflectance coating, avoid making on light guide plate, make the technique of backlight module generation lattice point structure provided by the invention simple, can effectively reduce the manufacturing cost of backlight module.
Embodiment 1:
With the above-mentioned potpourri for preparing, the mode by anilox roll is coated on reflectance coating (300-RA, east, the Ningbo rising sun becomes product), afterwards, then with the accurate template impression that is furnished with site, simultaneously through ultraviolet irradiation, the curing gained.Cut a slice prepared reflectance coating as stated above, be arranged on again 32 " on the side-light backlight module; remove light guide plate; then the BM-7 brightness photometer of TOPCON company is set; test angles is arranged to 0.2 °; and the distance between backlight module and BM-7 is arranged to 50CM, and measure each brightness in 9 specified points and obtain its mean value and homogeneity.
Embodiment 2:
With the above-mentioned potpourri for preparing, the mode by anilox roll is coated on reflectance coating (300-RA, east, the Ningbo rising sun becomes product), afterwards, then with the accurate template impression that is furnished with site, simultaneously through ultraviolet irradiation, the curing gained.Cut a slice prepared reflectance coating as stated above, be arranged on again 32 " on the side-light backlight module; remove light guide plate; then the BM-7 brightness photometer of TOPCON company is set; test angles is arranged to 0.2 °; and the distance between backlight module and BM-7 is arranged to 50CM, and measure each brightness in 9 specified points and obtain its mean value and homogeneity.
Embodiment 3:
With the above-mentioned potpourri for preparing, the mode by anilox roll is coated on reflectance coating (300-RA, east, the Ningbo rising sun becomes product), afterwards, then with the accurate template impression that is furnished with site, simultaneously through ultraviolet irradiation, the curing gained.Cut a slice prepared reflectance coating as stated above, be arranged on again 32 " on the side-light backlight module; remove light guide plate; then the BM-7 brightness photometer of TOPCON company is set; test angles is arranged to 0.2 °; and the distance between backlight module and BM-7 is arranged to 50CM, and measure each brightness in 9 specified points and obtain its mean value and homogeneity.
Comparative example 1: cut the common reflectance coating 300-RA of a slice (east, the Ningbo rising sun becomes to produce), be arranged on again 32 " on the side-light backlight module; then the BM-7 brightness photometer of TOPCON company is set; test angles is arranged to 0.2 °; and the distance between backlight module and BM-7 is arranged to 50CM, and measure each brightness in 9 specified points and obtain its mean value and homogeneity.
Please refer to chart 1
| Average luminance | The center briliancy | Homogeneity | |
| Embodiment 1 | 3868 | 3952 | 94.52％ |
| Embodiment 2 | 3879 | 3960 | 94.96％ |
| Embodiment 3 | 3854 | 3947 | 94.34％ |
| Comparative example 1 | 3852 | 3943 | 94.01％ |
The luminance ratio of table 1 reflectance coating of the present invention and common reflectance coating
As can be seen from Table 1, the effect of the reflecting effect of the reflectance coating with light guiding points of the present invention and traditional backlight module approaches.
Liquid crystal backboard reflectance coating provided by the invention, have good reflectivity and light conductivity, have the effect approaching with the backboard module of traditional use light guide plate, can access good face photism and brightness uniformly, saved the production process of light guide plate, can be so that high brightness to be provided at low cost.The present invention can bring special effect industrial.
Claims (7)
1. the method for making of a reflectance coating, is characterized in that, comprising:
Step 1, apply the photocuring glue on the surface of reflectance coating matrix;
Step 2, by described reflectance coating matrix being carried out simultaneously press mold and ultraviolet curing operation, produce on the surface of described reflectance coating matrix and can carry out to light that the microstructure of scattering is reflective, light guiding points.
2. the method for making of reflectance coating according to claim 1, is characterized in that, the white PET polyester film of described reflectance coating matrix adopting after two-way stretch is processed.
3. the method for making of reflectance coating according to claim 1, is characterized in that, the glue of described photocuring glue for by UV glue, titania, barium sulphate mixing viscous fluid, being mixed.
4. the method for making of reflectance coating according to claim 3, is characterized in that, described UV glue is combined by acrylic ester compound, solvent, spreading agent and whiteruss.
5. the method for making of reflectance coating according to claim 4, it is characterized in that, described photocuring glue by massfraction is: the light reflection function filler of the mixed solvent of the urethane acrylate of 15-30%, the polyester acrylate of 30-50%, 10-15%, 15-26%, the whiteruss of 0.5-1.5%, the spreading agent of 0.5-1.0% and the light trigger of 2.5-4.0% mix; Wherein, functional stuffing is titania, barium sulphate, and its mass ratio is 2: 1.
6. the method for making of reflectance coating according to claim 5, is characterized in that, described mixed solvent is served as reasons: cyclohexanone, butyl acetate, ethyl acetate, toluene are 2: 1: 1 according to quality than ratio: 2 mix.
7. a backlight module, comprise reflectance coating, it is characterized in that, the surface of described reflectance coating has carries out to light that the microstructure of scattering is reflective, light guiding points.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730606A (en) * | 2013-12-24 | 2015-06-24 | 鸿富锦精密工业（深圳）有限公司 | Light reflector plate and manufacturing method thereof |
| CN105093368A (en) * | 2015-08-11 | 2015-11-25 | 宁波长阳科技有限公司 | Preparation method of reflecting film for backlight module |
| CN105929470A (en) * | 2016-06-28 | 2016-09-07 | 江苏新光镭射包装材料股份有限公司 | Reflective film with microstructures and preparation method thereof |
| CN106681051A (en) * | 2015-11-09 | 2017-05-17 | 宁波长阳科技股份有限公司 | Reflecting film for side type quantum dot display module and preparation method thereof |
| CN109849106A (en) * | 2018-12-10 | 2019-06-07 | 深圳市隆利科技股份有限公司 | A kind of reflectance coating and its die cutting method reducing backlight module periphery bright line |
| CN110205015A (en) * | 2019-07-09 | 2019-09-06 | 河源轩朗光电科技有限公司 | Reflective coating and its preparation method and application |
| CN114077000A (en) * | 2020-08-13 | 2022-02-22 | 苏州维旺科技有限公司 | Diffusion sheet, preparation method thereof and backlight module |
| CN116042001A (en) * | 2023-03-31 | 2023-05-02 | 宁波长阳科技股份有限公司 | Ultraviolet light curing coating, reflecting film and preparation method thereof |
Citations (1)
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| CN102518974A (en) * | 2012-01-13 | 2012-06-27 | 上海向隆电子科技有限公司 | Light-emitting module and manufacturing method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102518974A (en) * | 2012-01-13 | 2012-06-27 | 上海向隆电子科技有限公司 | Light-emitting module and manufacturing method thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730606A (en) * | 2013-12-24 | 2015-06-24 | 鸿富锦精密工业（深圳）有限公司 | Light reflector plate and manufacturing method thereof |
| CN105093368A (en) * | 2015-08-11 | 2015-11-25 | 宁波长阳科技有限公司 | Preparation method of reflecting film for backlight module |
| CN105093368B (en) * | 2015-08-11 | 2018-02-27 | 宁波长阳科技股份有限公司 | A kind of preparation method of backlight module reflectance coating |
| CN106681051A (en) * | 2015-11-09 | 2017-05-17 | 宁波长阳科技股份有限公司 | Reflecting film for side type quantum dot display module and preparation method thereof |
| CN105929470A (en) * | 2016-06-28 | 2016-09-07 | 江苏新光镭射包装材料股份有限公司 | Reflective film with microstructures and preparation method thereof |
| CN109849106A (en) * | 2018-12-10 | 2019-06-07 | 深圳市隆利科技股份有限公司 | A kind of reflectance coating and its die cutting method reducing backlight module periphery bright line |
| CN110205015A (en) * | 2019-07-09 | 2019-09-06 | 河源轩朗光电科技有限公司 | Reflective coating and its preparation method and application |
| CN114077000A (en) * | 2020-08-13 | 2022-02-22 | 苏州维旺科技有限公司 | Diffusion sheet, preparation method thereof and backlight module |
| CN116042001A (en) * | 2023-03-31 | 2023-05-02 | 宁波长阳科技股份有限公司 | Ultraviolet light curing coating, reflecting film and preparation method thereof |
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