CN102898889A - UV-curable light-guide printing ink and light-guide plate employing the printing ink - Google Patents
UV-curable light-guide printing ink and light-guide plate employing the printing ink Download PDFInfo
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- CN102898889A CN102898889A CN2011102130824A CN201110213082A CN102898889A CN 102898889 A CN102898889 A CN 102898889A CN 2011102130824 A CN2011102130824 A CN 2011102130824A CN 201110213082 A CN201110213082 A CN 201110213082A CN 102898889 A CN102898889 A CN 102898889A
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Abstract
The invention relates to a UV-curable light-guide printing ink and a light-guide plate employing the printing ink. The light-guide printing ink comprises the components of: a polymer obtained by a cross-linking reaction of polyurethane acrylic resin and polyester acrylate and grafting reactions of light-guide powder with polyurethane acrylic resin and polyester acrylate respectively, a diluting agent, and a photo-initiator. In the light-guide printing ink, through the chemical reactions, the light-guide powder is grafted in the polymer containing acrylic resin, such that the light-guide printing ink has a quantum optical effect, and is provided with an excellent optical performance. Also, as a result of practice, the curing time of the light-guide printing ink is short, such that light-guide plate deformation is effectively avoided. The light-guide plate employing the light-guide printing ink has extremely high light-guide uniformity and light transmittance, high optical performance, and excellent screen-printing performance.
Description
[technical field]
The present invention relates to a kind of light guide ink, particularly relate to the light guide ink that a kind of UV solidifies and the light guiding plate that uses this printing ink.
[background technology]
Liquid-crystal display generally comprises liquid crystal panel and backlight module etc.Backlight module generally comprises light guiding plate, reflector, light source etc.
Light guiding plate is acryl or the PC sheet material that utilizes optical grade, and utilizes light guide ink to stamp light guiding points by the UV screen printing technology in the sheet material bottom surface.The light that utilizes sheet material to draw to send from light source is in the stop of plate surface, and when irradiate light during to each light guiding points, reflected light can toward all angles diffusion, then destroy conditioned reflex and penetrate by light guiding plate is positive.Light guiding plate mainly by various densitys, light guiding points not of uniform size, makes the light guiding plate uniformly light-emitting.The purposes of reflector plate is the luminous reflectance that expose the bottom surface is returned in the light guiding plate, is used for improving the service efficiency of light.
The one-tenth branch of light guide ink directly has influence on the quality of light guiding points, and the light guiding points quality directly has influence on brightness uniformity and the colourity of flat-panel monitor.
[summary of the invention]
Based on this, be necessary to provide preferably light guide ink of a kind of optical property.
Preferably light guiding plate of a kind of optical property is provided simultaneously.
A kind of UV solidifies light guide ink, comprises following component:
Polyurethane acrylic resin and polyester acrylic fat generation crosslinking reaction, and the polymkeric substance that generates with polyurethane acrylic resin, polyester acrylic fat generation graft reaction respectively of leaded light powder;
Reach thinner, light trigger.
In a preferred embodiment, it is as follows to prepare the proportioning raw materials of described light guide ink:
Polyurethane acrylic resin: the 15-30 weight part,
Described polyester acrylic fat: the 20-50 weight part,
Described leaded light powder: the 10-27 weight part,
Described solvent: 5-20 weight part.
In a preferred embodiment, it is as follows to prepare the proportioning raw materials of described light guide ink:
Described polyurethane acrylic resin raw material is 17.5 weight parts,
Described polyester acrylic fat: 40 weight parts,
Described leaded light powder raw material is 20 weight parts,
Described solvent is 13 weight parts.
In a preferred embodiment, the molecular weight ranges of described polyurethane acrylic resin is between the 1000-200000.
In a preferred embodiment, described leaded light powder take methyltrimethoxy silane as raw material through hydrolysis, the polymethsiloxane microspheres made of polycondensation process; The pH=4.0 of described hydrolytic process~6.0, the described water oil ratio that feeds intake is less than 1/4; The pH=7.0 of described polycondensation process~9.0, the particle diameter of described polymethsiloxane microspheres are 0.5-15 μ m.
In a preferred embodiment, the raw material for preparing described light guide ink also comprises:
0.5-5 the dispersion agent of weight part, the defoamer of 0.01-2 weight part, and the coupling agent of 0.5-1.5 weight part.
In a preferred embodiment, described dispersion agent is 2.5 weight parts, and described defoamer is 0.5 weight part, and described coupling agent is 0.5 weight part.
In a preferred embodiment, the raw material for preparing described light guide ink also comprises: the light trigger of 1-5 weight part.
In a preferred embodiment, the temperature of described leaded light powder and polyurethane acrylic resin or polyester acrylate generation graft reaction is controlled at below 80 degree, and stirring velocity is at 300r/min-400R/min, and the reaction times was controlled between 1-2 hour.
A kind of light guiding plate, comprise transparency carrier and be arranged on light guide ink layer on the transparency carrier, described light guide ink layer by the light guide ink silk screen printing on described transparency carrier and UV solidify to form, described light guide ink is that the described UV of any one solidifies light guide ink in the claim 1-9 item.
Above-mentioned light guide ink and use the light guiding plate of this light guide ink, the preparation light guide ink the leaded light powder respectively with polyurethane acrylic resin, polyester acrylic fat generation grafting chemical reaction, minor matters make light guide ink produce the quantum optical effect among polymer architecture, have good optical property.Polyester acrylic fat and polyurethane acrylic resin generation crosslinking reaction are filled in the slit of polyurethane acrylic resin, when light guide ink solidifies, avoid being expressed to leaded light powder microballoon owing to polymethacrylate resin shrinks severity, thereby avoid the leaded light powder to have influence on the optical property of printing ink because of crimp.Before solidifying, UV adds the optical indexes such as scattered power that polyester acrylate improves light guiding plate.Increase simultaneously the toughness of light guiding plate, thermotolerance, wear resistance etc.Polyurethane acrylic resin makes light guide ink have good sticking power, and the leaded light powder can not assembled or be come off, thereby plays the effect of good scattered light.Use the light guiding plate leaded light homogeneity transmittance of this light guide ink all high, optical property is very high, and the silk-screen performance is also splendid.
[description of drawings]
Fig. 1 is the structural representation of the light guiding plate of one embodiment of the invention.
[embodiment]
The below adopts specific embodiment that the present invention is further specified.
A kind of UV of the present invention solidifies light guide ink, comprises following component: polyurethane acrylic resin and polyester acrylic fat generation crosslinking reaction, and the leaded light powder respectively with the polymkeric substance of polyurethane acrylic resin, the generation of polyester acrylic fat generation graft reaction; Reach thinner, light trigger.
The leaded light powder of one embodiment of the present invention is the polymethsiloxane microspheres of making through hydrolysis, polycondensation process take methyltrimethoxy silane (MTMS) as raw material.The pH=4.0 of hydrolytic process~6.0 wherein, the water oil ratio that the feeds intake mol ratio of water (methyltrimethoxy silane (MTMS) with) is less than 1/4.Control pH=7.0~9.0 in the polycondensation process.The leaded light powder of present embodiment is spherical silicone resin, and its particle diameter is 0.5-15 μ m.
Leaded light powder in the light guide ink respectively with polyurethane acrylic resin, polyester acrylic fat generation grafting chemical reaction, minor matters are among polymer architecture, light guide ink produces the quantum optical effect, has good optical property.Polyester acrylic fat and polyurethane acrylic resin generation crosslinking reaction are filled in the atom slit of polyurethane acrylic resin.Because polyester acrylic fat and polyurethane acrylic resin generation crosslinking reaction are filled in the atom slit of polymethacrylate resin, when light guide ink solidifies, avoid being expressed to leaded light powder microballoon owing to polymethacrylate resin shrinks severity, thereby avoid the leaded light powder to have influence on the optical property of printing ink because of crimp.Polyester acrylic fat has improved the optical indexes such as specific refractory power of resin, increases simultaneously the toughness of resin, thermotolerance, wear resistance etc.
Leaded light powder and polyurethane acrylic resin generation graft reaction, minor matters are among polyurethane acrylic resin, and the leaded light powder can not assembled, and polyurethane acrylic resin tightly is bonded in the leaded light powder on the light guiding plate simultaneously, can not come off, so that light guide ink plays the effect of good scattered light.
The proportioning raw materials of preparation light guide ink of the present invention is as follows:
Polyurethane acrylic resin: the 15-30 weight part,
Polyester acrylic fat: the 20-50 weight part,
The leaded light powder: the 10-27 weight part,
Reactive thinner: the 5-20 weight part,
Light trigger: 1-5 weight part.
Further, the raw material of preparation light guide ink of the present invention also comprises: dispersion agent is the 0.5-5 weight part, and defoamer is the 0.01-2 weight part, and coupling agent is the 0.5-1.5 weight part.
In a preferred embodiment, the molecular weight ranges of optically focused initiator acrylic resin is between the 1000-200000.
The solvent of one embodiment of the present invention is the mixed active thinner.The mixed active thinner is tripropylene glycol diacrylate (TPGDA) in the preferred embodiment, wherein one or several of 1,6 hexanediyl ester (HDDA), neopentylglycol diacrylate (NPGDA) etc.
The light trigger of the preferred embodiments of the present invention is 184 (1-hydroxyl-phenylcyclohexyl ketones), 1173 (2-hydroxy-2-methyl-phenyl-acetones-1), TPO (2; 4,6-trimethylbenzoyl-diphenyl phosphate oxidation), wherein one or more such as BP (benzophenone).
Further, the temperature that the raw material of the light guide ink of preparation present embodiment reacts is controlled at below 80 ℃, and stirring velocity is at 300r/min-400R/min, and the reaction times was controlled between 1-2 hour.Preferably.Temperature of reaction preferably is controlled between 75-80 ℃.Further, heating in water bath is adopted in the control of the temperature of this enforcement.
In the present invention's the 1st preferred embodiment, it is as follows to prepare light guide ink proportioning raw materials of the present invention: the polyester acrylic fat of 17.5 weight part polyurethane acrylic resins, 20 weight part leaded light powder, 40 weight parts reaches the mixed active thinner of 13 weight parts, the light trigger of 5 weight parts.
Further, the raw material of preparation light guide ink of the present invention also comprises the auxiliary agent of following proportioning: the defoamer of the dispersion agent of 2.5 weight parts, 0.5 weight part, the coupling agent of 0.5 weight part.
In the present invention's the 2nd preferred embodiment, the composition of raw materials for preparing light guide ink of the present invention is as follows: the defoamer of the polyester acrylic fat of the leaded light powder of the polyurethane acrylic resin of 15 weight parts, 10 weight parts, the mixed active thinner of 5 weight parts, 20 weight parts, the dispersion agent of 0.5 weight part, 0.01 weight part, the light trigger of 1 weight part, and the coupling agent of 0.5 weight part.
The composition of raw materials of the preparation light guide ink of the present invention of the present invention's the 3rd preferred embodiment is as follows: the defoamer of the polyester acrylic fat of the leaded light powder of the polyurethane acrylic resin of 30 weight parts, 27 weight parts, the mixed active thinner of 20 weight parts, 50 weight parts, the dispersion agent of 5 weight parts, 2 weight parts, the light trigger of 5 weight parts, and the coupling agent of 1.5 weight parts.
As shown in Figure 1, a kind of light guiding plate 100 of the present invention comprises transparency carrier 20 and is arranged on light guide ink layer 40 on the transparency carrier 20.Light guide ink layer 40 by above-mentioned light guide ink silk screen printing on transparency carrier 20 and UV solidify to form.
Preferably, transparency carrier 20 adopts the PMMA (polymethylmethacrylate) of optical grade.The transmittance of the preferred transparency carrier 20 of present embodiment is greater than 90%, and thickness is 0.5-10mm.
The preferred light guide ink layer 40 of present embodiment is that the regular hexagon cell array of 0.05-10mm forms by gap size.The light guide ink layer 40 employing UV machine of present embodiment are cured and carry out.
The feed composition proportioning of the light guide ink that the UV of preparation present embodiment solidifies is as follows: 15-30 weight part polyurethane acrylic resin, 10-27 weight part leaded light powder, and the mixed active thinner of the coupling agent of the light trigger of the defoamer of the dispersion agent of 0.5-5 weight part, 0.01-2 weight part, 1-5 weight part, 0.5-1.5 weight part, 5-20 weight part, and 20-50 weight part polyester acrylic fat.
Wherein, leaded light powder and polyurethane acrylic resin generation graft reaction, minor matters make light guide ink produce the quantum optical effect among the polymer architecture that generates, and have good optical property.
In the raw material of preparation invention light guide ink, the leaded light powder respectively with polyurethane acrylic resin, polyester acrylic fat generation grafting chemical reaction, minor matters make light guide ink produce the quantum optical effect among polymer architecture, have good optical property.Polyester acrylic fat and polyurethane acrylic resin generation crosslinking reaction are filled in the atom slit of polyurethane acrylic resin.Because polyester acrylic fat and polyurethane acrylic resin generation crosslinking reaction are filled in the atom slit of polymethacrylate resin, when light guide ink solidifies, avoid being expressed to leaded light powder microballoon owing to polyurethane acrylic resin shrinks severity, thereby avoid the leaded light powder to have influence on the optical property of printing ink because of crimp.Before solidifying, UV adds the optical indexes such as specific refractory power that polyester acrylate improves light guiding plate 100.Increase simultaneously the toughness of transparency carrier 20, thermotolerance, wear resistance etc.
Polyurethane acrylic resin and transparency carrier 20 are the material of close character such as PMMA, make light guide ink have good sticking power.Leaded light powder and polyurethane acrylic resin generation graft reaction, minor matters are among polyurethane acrylic resin, the leaded light powder is fixed in the polymethacrylate resin, the leaded light powder can not assembled, polyurethane acrylic resin tightly is bonded on the transparency carrier 20 simultaneously, the leaded light powder can not come off or fall down, thereby play the effect of good scattered light.
Polyurethane acrylic resin is used for leaded light powder and transparency carrier 20 are linked together.Polyurethane acrylic resin plays function served as bridge, and spherical leaded light powder and transparency carrier 20 tightly are bonded together, and the leaded light powder can not come off, and plays the preferably effect of scattered light.
UV of the present invention solidifies light guide ink, transparency carrier 20 such as the PMMA material had high adhesive force, it is splendid to have simultaneously very high leaded light homogeneity, high transmission rate and silk-screen performance, but silk-screen goes out 0.3mm size even less light guiding points, effectively prevented light guiding plate 100 distortion less than 30 seconds the set time in the UV solidification process of UV curing light guide ink in addition of the present invention, strengthens the reliability of light guiding plate 100, and light guide ink reliability of the present invention is high, single-component.UV of the present invention solidifies the light guiding plate 100 in the LCD backlight module that light guide ink is mainly used in adopting the LED-backlit source.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. a UV solidifies light guide ink, it is characterized in that, comprises following component:
Polyurethane acrylic resin and polyester acrylic fat generation crosslinking reaction, and the polymkeric substance that generates with polyurethane acrylic resin, polyester acrylic fat generation graft reaction respectively of leaded light powder;
And solvent;
Light trigger.
2. the described UV of middle any one solidifies light guide ink according to claim 1, it is characterized in that the molecular weight ranges of described polyurethane acrylic resin is between the 1000-200000.
3. UV according to claim 1 solidifies light guide ink, it is characterized in that,
Polyurethane acrylic resin: the 15-30 weight part,
Described polyester acrylic fat: the 20-50 weight part,
Described leaded light powder: the 10-27 weight part,
Described solvent: 5-20 weight part;
Light trigger: 1-5 weight part.
According to claim 1 in 3 the described UV of any one solidify light guide ink, it is characterized in that, more excellent,
Described polyurethane acrylic resin raw material is 17.5 weight parts,
Described polyester acrylic fat: 40 weight parts,
Described leaded light powder raw material: 20 weight parts,
Described solvent: 13 weight parts.
Light trigger: 3 weight parts.
According to claim 1 in 3 the described UV of any one solidify light guide ink, it is characterized in that described leaded light powder is polymethsiloxane microspheres, the particle diameter of described polymethsiloxane microspheres is 0.5-15 μ m.
6. UV according to claim 1 solidifies light guide ink, it is characterized in that the raw material for preparing described light guide ink also comprises the auxiliary agent of following proportioning:
0.5-5 the dispersion agent of weight part, the defoamer of 0.01-2 weight part, and the coupling agent of 0.5-1.5 weight part.
7. UV according to claim 6 solidifies light guide ink, it is characterized in that described dispersion agent is 2.5 weight parts, and described defoamer is 0.5 weight part, and described coupling agent is 0.5 weight part.
8. according to claim 1-3, the described UV of 6-7 any one solidifies light guide ink, it is characterized in that, during the described polymkeric substance of described preparation, the employing temperature is 75 ℃~80 ℃ heating in water bath, and heat while stirring, stirring velocity is 300r/min-400R/min, and the reaction times is 1-2 hour.
9. light guiding plate, comprise transparency carrier and be arranged on light guide ink layer on the transparency carrier, described light guide ink layer by the light guide ink silk screen printing on described transparency carrier and UV solidify to form, it is characterized in that described light guide ink is that the described UV of any one solidifies light guide ink in the claim 1-7 item.
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CN103725087A (en) * | 2013-12-19 | 2014-04-16 | 深圳市嘉卓成科技发展有限公司 | Halogen-free ultraviolet light radiation, solidification and light guiding printing ink and preparation and usage methods thereof |
CN104122383A (en) * | 2013-04-24 | 2014-10-29 | 深圳市海洋王照明工程有限公司 | Light guide plate printing ink adsorptivity test method |
CN104199138A (en) * | 2014-08-19 | 2014-12-10 | 常熟昊虞电子信息科技有限公司 | Light guide plate for ultra-thin light box |
CN104448213A (en) * | 2014-12-19 | 2015-03-25 | 江南大学 | Preparation method of reactive isocyanatosilane modified UV (ultraviolet) curable polyurethane prepolymer |
CN105904863A (en) * | 2016-04-21 | 2016-08-31 | 金铭嫦 | Printing process of light guide plate |
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