CN1150655A - Ionization ray solidified resin composite for optical device, optical device and surface light source - Google Patents

Abstract

The present invention proposes an ionizing radiation setting type resin composite for optical component, optical component made of solidified material of said composite and facial light soruce. The solidified material of the invented resin composite has no yield point in the relation graph between tensile stress and strain, and its surface hardness is high, and has no such problems as contraction distortion in the course of solidification, deformation after solidified, remaining scar and low weatherability. Said invented product can be used as back lighting measure for various transmittance display bodies, and can be used in the field of holography and screen, etc. The invented facial light source is composed of optical conductor, light source unit and the invented optical component.

Description

Used for optical part ionization ray solidified resin composite, optics and area source

The invention relates to the used for optical part ionization ray solidified resin composite, use the optics with premium properties and the area source of this used for optical part ionization ray solidified resin composite, this resin combination is as transmissive liquid crystal display, the image projection machine, billboard, light diffusing sheet, back light (back side light source) lighting means of light transmission display body such as back reflection lens, perhaps holograph, opticses such as projection video screen use, the skin hardness height, the drawdown deformation when not solidifying, distortion after the curing and stay trace, the problem that weatherability is low.

In recent years, in transmissive liquid crystal display, the requirement of lightweight, electric power low consumptionization is more and more higher, to effectively utilize the luminous energy of back side light source, the light harvesting of the light source light uniformly and effectively in the enough directions of necessity, spread angle is a purpose, has proposed various suggestions.

Light source is normally prepared in these suggestions on the side of the light conductor that is made of sheet materials such as transparent acrylic resins, reflective layer reflects in the light conductor the inside incides the light source in the light conductor from the side, penetrate light source light from the light emitting surface of the uper side surface of light conductor, utilize.

At this moment, on the uper side surface of light conductor,, use optical element with prismatic action or lensing in order to obtain desirable output light spread angle, exit direction, the brightness of crest direction, that is, and the area source that the configuration lens array sheet constitutes.On such a light conductor side, prepare the area source of light source, be called the area source of edge light type (or side light type) by its formation.In addition, also have diffusion sheet and lens array sheet just below the full run-down type area source of configuration light source, but as the area source of used for liquid crystal display element, because thicker, so purposes is restricted.

In the past, lens array sheet generally was the injection moulding that utilizes thermoplastic resin that discloses in United States Patent (USP) 2482598 and No. 3565978 communiques etc. or hot-pressed manufacturing.But these manufacture methods exist the heating and cooling when making to need the problem long-time, that throughput rate is low, and the problem of the durability not insufficient of the lens array sheet that manufactures in addition.

In recent years, have been proposed between lens-type pattern master and the transparent membrane and get involved reaction resin, reaction resin is solidified, make the method for the duplicate of lens pattern master with heat and ultraviolet ray.In United States Patent (USP) 2524862, described by monomers such as photopolymerization (methyl) acrylate and methyl methacrylates, or these partially polymerized compositions are made the method for optics.

In addition, in United States Patent (USP) 3689346 and 3935359, the resin combinations such as acrylate of having described the partially polymerized materialization that energy is crosslinked inject the lens pattern master, utilize actinic energy ray and heat to be cured, and make the method for lens array sheet continuously.

Open among the clear 48-21546 the spy, disclosed the resin of clamping no-solvent type photo-curable between transparent cramping body, by hyalomere exposure, exposed portion is solidified, obtain manufacture method corresponding to the optical element of the light-cured resin formed body of cramping body surface of contact shape.

In addition, in United States Patent (USP) 4376800, describe the composition of forming by propenyl monomer and urine alkyl acrylate with ultraviolet curing, made the method for optics.But such method is because use strong monomers such as skin irritation, toxicity, so have operating environment to worsen, finish elapsed time, shortcoming that throughput rate is low to reaction.And mechanical characteristic degradation is arranged or shrink the problem of the distortion such as warpage that produce film when solidifying.

Special public according among the 62-51725, disclosed the replica method of the plastics information carrier of CD and LD etc., it is to go up the ray polymerization resin that coating contains stable hydrocarbon and phenyl at the metallic former (pattern master) with information trace, then with the surface of the above-mentioned former opposition side of this polymerism resin on substrate is set, perhaps after applying this polymerism resin bed on the substrate in advance, the polymerism shaping resin layer that will have this substrate is covering on above-mentioned former, after making this polymerism shaping resin photocuring, remove from former with this polymerism shaping resin layer with in conjunction with substrate thereon, duplicate the plastics breath letter carrier of CD and LD thus.

In addition, open among the flat 5-169015 United States Patent (USP) 3689346, spy, disclosed ionization ray solidified resin composite is filled into to carve and established in the metal pattern of desirable lenticular array shape, make crosslinked, the curing of this oligomer constituent with ionization rays such as irradiation ultraviolet radiation, electron raies, make solidfied material break away from metal pattern then, make the method for micro lens arrays sheet.

Have again, in United States Patent (USP) 4576850 and special fair 4-5681, disclosed with the ultraviolet ray irradiation and made the potpourri crosslinking curing that is called so-called soft part and hard portion compound, with this method that improves thermal dimensional stability and improve mechanical properties.But these methods have long set time of cost and produce because of the importing of soft part that the skin hardness that generates solidfied material is low, distortion and the low problem of weatherability when lens array sheet solidifies.

In addition, open among the flat 4-329501 the spy, having disclosed the micro lens arrays with the casting manufactured of identical ionization actinic radiation-curable resin, be the ionization ray-curable material formation with polynary (methyl) acryl resin, and the Young modulus of this solidfied material is selected in 1000kg/cm ²-5000kg/cm ²(25 ℃).

That is to say, be 1000kg/cm in Young modulus ²When following, the sheet solidfied material is easy to generate distortion when stacked, the shape of established optics, the shape of especially pressurized point distorts, and the danger that has optical characteristics to change in addition, surpasses 5000kg/cm ², because of polymerization shrinkage easily produces warpage, this all is unfavorable.

In addition, the spy opens flat 6-67004 and discloses, because same reason, the elastic modulus at 25 ℃ after the curing of activation evergy gel-type resin is in 10000-50000kg/cm ²Scope be desirable.

But, clear, in fact make optics, even make with the optics manufacture method according to these conventional arts, it is difficult solving following shortcoming fully.That is,

(1) using animi resin (resin of high Young's modulus) to be made in the situation of optics, good person such as the shape representation of shaping thing, skin hardness, when the thing that especially is shaped is laminar, the warpage that mostly occurs and optical distortion.In addition, if the additional distortion such as recess that produced by crooked, extruding, then distortion forever left behind, and returns less than original state (staying trace).And be easy to generate be full of cracks, disrumpent feelings etc. once applying external force.

(2) on the other hand, using barras (resin of low Young modulus) to be made in the situation of optics, the improved optics of above-mentioned shortcoming easily produces distortion, when the thing that especially is shaped is laminar, it is stacked, when being laminated into other tabular bodys such as light guide plate of liquid crystal indicator (LCD), edge light area source, be easy to generate distortion, the shape of point of formed lens shape, especially pressurization distorts, optical characteristics changes, because skin hardness is not enough, be easy to generate abrasion and scratch etc. in addition.

Particularly about the trace that stays in (1), control is extremely difficult fully, even other problems is all eliminated, also mostly occurring stays trace, and if elimination stays trace, at this moment just leaves over the problem that above-mentioned other shortcomings take place.

The problem that the present invention will solve is, solve the aforesaid drawbacks (1) and (2), especially wherein stay trace, provide the transparency, refractive index, skin hardness etc. good, set time is short, the used for optical part ionization ray solidified resin composite that throughput rate is high uses the optics of this resin combination and the area source that is made of this optics.

The inventor is in order to solve above-mentioned problem, the result of wholwe-hearted research shows, it is not enough only inquiring into elastic modulus, in the graph of a relation of the tension stress of solidfied material and strain, by using solidfied material not have the ionization ray solidified resin composite of yield point, can solve is (1) and (2) of used for optical part ionization ray solidified resin composite shortcoming in the past, especially wherein stay trace, particularly by using by having ring texture, the epoxy acrylate (a) of two above acrylate bases is arranged and have that the monofunctional acrylate (b) of ring texture constitutes, the acrylate-functional base is that 0.2-5.0mmol/g is the specific optical components ionization ray solidified resin composite of feature, find the high rigidity and the refractive index that keep solidfied material, permanance is good, and distortion such as warpage is few when solidifying, can design fine shape, the used for optical part ionization ray solidified resin composite that curing rate is fast has been finished the present invention thus.

The form that carries out an invention

That is, the present invention is with in tension stress and strain stress relation figure, and solidfied material does not have the used for optical part ionization ray solidified resin composite that yield point is a feature.

Used for optical part ionization ray solidified resin composite of the present invention, it is desirable to have ring texture, epoxy acrylate acrylate-based more than two (a) to be arranged and have that the monofunctional acrylate (b) of ring texture constitutes, acrylate-functional base is that 0.2-5.0mmol/g, solidfied material do not have the used for optical part ionization ray solidified resin composite that yield point is a feature.

Used for optical part ionization ray solidified resin composite of the present invention, in more detail, be to be feature to have ring texture, epoxy acrylate acrylate-based more than two (a) is arranged, the epoxy acrylate that the epoxy resin of more than one that select bisphenol f type epoxy resin, bisphenol-A epoxy resin and their potpourri that this epoxy acrylate is the bisphenol A type epoxy resin that replaces from bisphenol A type epoxy resin, bisphenol f type epoxy resin, part halogen, the part halogen replaces obtains with the reaction of (methyl) acrylic acid.

In addition; used for optical part ionization ray solidified resin composite of the present invention; in more detail; be to be feature with monofunctional acrylate (b) with ring texture; this monofunctional acrylate is from different third ester of (methyl) acrylic acid; glycidyl cyclic carbonate ester (methyl) acrylate; (methyl) tetrahydrofurfuryl acrylate; 2-hydroxyl-3-phenoxy group-propyl group (methyl) acrylate; 2-phenyl-2-(4-acryloyl group hydroxyphenyl) propane; 2-phenyl-2-(4-acryloyl group hydroxy alkoxy phenyl) propane; 2; 4; 6-tribromo phenyl acrylate; 2; 4, the monofunctional acrylate of more than one that select in 6-tribromo phenyl alkoxy acrylic ester and their potpourri.

In addition, the present invention includes the optics that constitutes with the solidfied material of ionization ray solidified resin composite by optics of the present invention, the optics that the solidfied material layer (A) of the ionization ray solidified resin composite of being made up of used for optical part ionization ray solidified resin composite of the present invention and laminar transparent resin layer (C) constitute is by the solidfied material layer (A) of ionization ray solidified resin composite and the optics of adhesive layer (B) and laminar transparent resin layer (C) formation.

Have again, the present invention be the light conductor that constitutes by the light transmission flat board, with the side end face of this light conductor in light source cell that is provided with top adjacency and the area source that constitutes of the optics of the present invention on reflection layer that is provided with on this light conductor the inside and the light emitting surface that is layered in this light conductor surface.

Describe the present invention below in detail.

So-called said in the present invention optics is the optics that a plurality of small unit lenses or small unit prism are disposed on one dimension direction or two-dimensional directional.Specifically, it is biconvex lens described later etc., as purposes, refer to transmission liquid crystal display device, electricity decorations billboard, the light diffusing sheet of the edge light of advertising lamp etc. (back side light source) usefulness, biconvex lens that the screen of light collecting plate and projection TV and light collecting lens are used and Robert Brenner lens, recurrence reflection sheet etc., diffraction grating, holograph, utilize the variation of reflection of light rate or transmissivity to be used for record, regenerating information and form the small-sized disk in modulation ditch and cave, opticses such as recording medium such as video disc, its majority have in its surface with efficient ground reflected light, refract light, light harvesting is the purpose microstructure.

Opticses such as these lens arra thin slices in its manufacture process, perhaps when being assembled into device, being subjected to external force and suffering local distortion.For example, the laminar optics that is mingled with foreign matter and bubble then has big stress at foreign matter where if reel in former state ground in the part.In addition, the coiling volume with a plurality of thin slices is arranged also, or the situation of the stacked former state of laminar optics ground keeping.

In these cases all because of focusing on concentration of local stress certainly.In the case, the strain that local deformation forms remains, and after the stress relief, also residual permanent strain (distortion) becomes the so-called trace that stays.Think that this is because because excessive stresses produces plastic yield on optics.

In order to address this problem, the feature of the ionization ray solidified composition of used for optical part of the present invention is that in the graph of a relation of tension stress and strain, its solidfied material does not have yield point.The said solidfied material of so-called the present invention does not have yield point, is meant at tension stress (kg/cm ²) and the graph of a relation of strain (%) in, promptly at the tension stress-strain curve of solidfied material, or in the graph of a relation of so-called S-S (stress-strain) curve or S-S characteristic, for example being meant does not have yield point person as shown in Figure 1, as shown in Figure 2, it is unfavorable having yield point person.

In addition, as shown in Figure 3, do not producing under the situation of yield point the stress during fracture (σ 2) yet, on tension stress-strain curve, the ratio of the stress intersection point (σ 1) of the strain during at the tangent line of stretcher strain starting point with in fracture, i.e. the value of σ 2/ σ, 1 demonstration more than 0.5 is desirable especially, if the ratio of σ 2/ σ 1 is below 0.5, then after external force was removed, it is long that the time that needs is restored in the distortion of solidfied material, is unfavorable.

Fig. 1-the 3rd schematically represents tension stress (kg/cm ²) and the relation of strain (%), it is the assay method according to JIS K7113, measures in 23 ± 2 ℃ of temperature, relative humidity 50 ± 2%.Strain (%) is the specimen length (l) and the initial length (l of sample after stretching _o) poor, divided by the length (l of initial sample _o), represent its ratio with number percent, with strain (%)=(l-l _o)/l _o* 100 calculate.

Particularly about staying trace, only controlling elastic modulus can not eliminate fully, the generation that stays trace has or not yield point relevant with tension stress-strain curve, use does not have the solidfied material of the used for optical part ionization ray solidified resin composite of the present invention of yield point, do not produce and stay trace, obtain good result.That is, by the optics that specific ionization ray-curable resin combination of the present invention constitutes, its solidfied material does not have yield point on stress-strain curve, institute adds stress in limit of elasticity the time, stress one discharges, and utilizes elastic restoring force just to return to original shape, does not produce and stays trace.

The used for optical part ionization ray-curable resin combination of Shi Yonging in the present invention, as long as its solidfied material satisfies the movement of tension stress-strain curve as described above, perhaps also satisfy elastic modulus scope person can, do not make particular determination.Therefore, according to used for optical part ionization ray solidified resin composite of the present invention, the resinous principle that is called so-called soft part and hard portion that contains record in United States Patent (USP) 4576850 in resin combination is not basically minded.

In addition, the used for optical part ionization ray solidified resin composite of only being made up of soft part is also included among the present invention.But, as desirable especially form of implementation of the present invention, be in resin combination, not conform to soft part, by the resinous principle that is called hard portion constitute, constituent structurally firmly, the hardness and the high resin combination of refractive index of solidfied material.As such hard portion, be to have ring texture, preferably have phenyl ring, the substituted benzene ring structure is desirable, and the phenyl ring, the substituted benzene ring structure that have more than 30% (weight) are desirable in this system.

About the elastic modulus of solidfied material, if elastic modulus is excessive, tendencies such as easy generation optical distortion, be full of cracks are just arranged, in addition if elastic modulus is too small, the tendencies such as lens distortion when just having easy generation stacked.These can be estimated with the compressive modulus of elasticity or the modulus of elasticity in static bending, still from the easness of good correlativity and mensuration, as elastic modulus, preferably estimate with tensile modulus of elasticity (being also referred to as Young modulus, modulus of longitudinal elasticity).

The tensile modulus of elasticity of the solidfied material of ionization ray-curable resin combination of the present invention is 1000-50000kg/cm ²Scope, be more preferably 2000-40000kg/cm ², good especially is 2500-35000kg/cm ²

If tensile modulus of elasticity is 1000kg/cm ²Below, optics with its stacked use the time, produces distortion with regard to easy deformation, produces deviation on shape and optical characteristics.

On the other hand, surpass 50000kg/cm at tensile modulus of elasticity ²The time, contraction and warpage and optical distortion when mostly occurring curing, and also be easy to generate be full of cracks and fracture.In the case, if stay trace, in case i.e. addition bend trace, the distortion such as recess that produced by extruding in the mill, then distortion for good and all left behind, and just has easy generation not get back to the tendency of original form.

The hardness of ionization ray solidified resin is influenced by rigidity, cross-linking density and the reaction rate etc. of resin matrix.As resin matrix, if import soft component, even then identical cross-linking density, hardness is step-down also.For fear of this kind situation, the method for supplying hardness if take to increase cross-linking density, then when ionization ray solidified resin solidification, it is big that cure shrinkage becomes, and is easy to generate the distortion of optics.

In order to reduce the distortion of optics, it is the warpage of lens array sheet, as the little a kind of method of cross-linking density that stops ionization ray solidified resin composite, studied to the interpolation of the resin combination of the big ionization ray solidified oligomer of molecular weight and the interpolation of thermoplastic polymer.But,,, then significantly improve the viscosity of the resin combination before solidifying if use big reactive oligomers of molecular weight and thermoplastic polymer etc. for the cross-linking density that makes ionization ray solidified resin composite is not little.

For the pattern master to ionization ray solidified resin composite evenly is coated with and has the duplicating of pattern master of microstructure, the viscosity of employed resin combination is generally wished the scope that is in 1000-12000cps at 25 ℃, preferably 1000-8000cps.Surpass 12000cps, perhaps on the contrary below 1000cps, make resin combination fully enter into the fine part of pattern master and the coating difficulty that becomes continuously.

But, if use special coating process, the following resin combination of coating 1000cps, especially no problem, the desirable occasion of using such a low viscosity resin composition is also arranged, in such occasion, add solvent and reaction diluent.

In order to adjust the viscosity of resin combination, if add the viscosity of reduction compositions such as solvent, the volatilization process that then needs solvent, and when the pattern after making solvent evaporates forms, in general duplicating of fine pattern master pattern becomes difficult, but be coated with on pattern master, fill after the relief pattern, means such as solvent are removed on employing stage ground, also can adjust the viscosity under the solvent interpolation.In addition, in order to reduce the viscosity of resin combination, though can add reactive diluent, under a large amount of situations of adding, it is big that the cure shrinkage of composition becomes, during fabrication or through producing the distortion of lens array sheet constantly, this is unfavorable.

In addition, method as the elastic modulus that reduces cured coating film, the low soft part composition of glass transition point is introduced in consideration in molecular structure, be as polypropylene ester of major component etc. with polyethers and aliphatic polyester, polysiloxane, polyolefin, acrylate as this composition.But owing to introduce such a soft part composition, the hardness of goods solidfied material reduces, and produces problems such as surface damage and permanance are low.

Specific resin composition of the present invention is because cross-linking density is not high, so be the resin combination that suppresses the solidfied material distortion.That is,, the functional group with polarity is arranged in molecule,, the employing structure of hydrogen bonds arranged intermolecular by polar functional group according to specific used for optical part ionization ray solidified resin composite of the present invention.

In general, hydrogen bond is that the high atom X of electronegativity forms between the X-H of Y base and Y atom, as the high atom of electronegativity, can enumerate oxygen, nitrogen-atoms.More particularly, form hydrogen bond between the oxygen atom of the hydroxyl of epoxy acrylate in being included in used for optical part ionization ray solidified resin composite of the present invention and the X=O in the monofunctional acrylate and Y=O.

The bonded energy of hydrogen bond is the 1-8 kcal/mol, a little less than common chemical bond, but because at intermolecular formation hydrogen bond, cross-linked structure like intermolecular formation vacation.Promptly, accelerate curing rate thus, and improve rerum natura intensity owing to, increase intermolecular cohesive force at intermolecular formation hydrogen bond.

Like this, the used for optical part ionization ray solidified resin composite that specific composition of the present invention is arranged, owing to have the intermolecular ydrogen bonding of formation ability, compare with other the resin combination that only constitutes with hard portion, curing rate is fast, and solidfied material has toughness, can seek to prevent during fabrication the distortion and the cracking of lens array sheet, improves the resistance to impact of lens array sheet.

Promptly, as the epoxy acrylate with ring texture of the present invention (a), be to replace bisphenol A epoxide resin, part halogen from bisphenol A type epoxy resin, bisphenol f type epoxy resin, part halogen to replace the epoxy acrylate that more than one epoxy resin of selecting bisphenol f type epoxy resin, bisphenol-A epoxy resin and their potpourri obtain with the reaction of (methyl) acrylic acid.

That is to say it is bisphenol-a epoxy acrylate and phenol novolaks, cresols phenolic varnish type epoxy acrylate, the epoxy acrylate of naphthalene skeleton, Bisphenol F type epoxy acrylate and their halogenide, hydride epoxy acrylate, or their potpourri.

In addition, have the compound of these ring texturees, and soft part is only arranged, perhaps soft part is compared with the resin cured matter of hard portion and usefulness, normally the refractive index height can must approach the thickness setting of optics, and the advantage as optical characteristics such as the brightness raising of area source is arranged.Especially, be the bromination epoxy acrylate that the part bromine replaces body, the refractive index height of solidfied material, and also because obtain anti-flammability, so be desirable.In addition, the hydrogenation epoxy acrylate is because weatherability, discoloration-resistant improve, so be gratifying.

These epoxy acrylates react the glycidyl ether compound that has ring texture in compound with ethene unsaturated double-bond and carboxylic acid and the molecule and obtain, and the opening that the carboxylic acid by glycidol ether produces is made.Utilize the glycidol ether open loop this moment, generates as residue with secondary hydroxyl, and this hydroxyl becomes the proton donor that forms hydrogen bond.

As the monofunctional acrylate with ring texture of the present invention (b), can use known habitually, can use or be used in combination more than two kinds the monofunctional acrylate of saturated, unsaturated cyclic structure separately and have the monofunctional acrylate of heterocycle structure with carbocyclic ring structure.

The typical example that only exemplifies out them is from (methyl) isobornyl acrylate; (methyl) tetrahydrofurfuryl acrylate; glycidyl cyclic carbonate ester (methyl) acrylate; the phenoxy group ethyl acrylate; (methyl) benzyl acrylate; (methyl) cyclohexyl acrylate; (methyl) acrylic acid two ring pentyl esters; dicyclopentenyl (methyl) acrylate; (methyl) glycidyl acrylate; 2-hydroxyl-3-phenoxy group-propyl group (methyl) acrylate; (methyl) acryloyl group hydroxyl phthalic; phenoxy group ethylene glycol (methyl) acrylate; adamantyl (methyl) acrylate; morpholino (methyl) acrylate; 2-phenyl-2-(4-acryloyl group hydroxy phenyl) propane; 2-phenyl-2-(4-acryloyl group hydroxy alkoxy base phenyl) propane; 2; 4; 6-tribromo phenyl acrylate; 2; 4, more than one monofunctional acrylates of selecting in 6-tribromo phenyl alkoxy acrylic ester and their potpourri etc.

Especially it is desirable to use 2-phenyl-2-(4-acryloyl group hydroxy phenyl) propane, 2-phenyl-2-(4-acryloyl group hydroxy alkoxy base phenyl) propane, 2; 4; 6-tribromo phenyl acrylate, 2,4,6-tribromo phenyl alkoxy acrylic ester and their potpourri.

The structural formula of 2-phenyl-2-(4-acryloyl group hydroxy alkoxy base phenyl) propane is shown in the general formula 1.

General formula 1

(in the formula, R represents hydrogen or methyl, R ₁The alkyl of expression carbon number 1-5, n represents the integer of 0-3.)

2,4, the structural formula of 6-tribromo phenyl alkoxy acrylic ester is shown in the general formula 2.

General formula 2

(in the formula, R represents hydrogen or methyl, R ₁The alkyl of expression carbon number 1-5, n represents the integer of 0-3.)

These are with the compound of general formula 1 or general formula 2 expressions, it is desirable to R especially and be hydrogen or methyl, R ₁Ethene, the n that is two carbon atoms is 0 or 1 compound.

In addition, also can use monofunctional reactant thinning agent in the present invention with monofunctional acrylate ring structure in addition.As their representative, can enumerate ethene, vinylpyrrolidone etc.

It is desirable to also use have hydroxyl is arranged, the ring texture monofunctional reactant thinning agent of acid group such as cyclic ethers base, cyclocarbonate radical, amino, carboxyl, phosphate, sulfonic group and alkali metal salt isopolarity functional group thereof.These reactive diluents can be enumerated (methyl) tetrahydrofurfuryl acrylate, glycidyl cyclic carbonate ester (methyl) acrylate, phenoxy group ethyl acrylate, 2-hydroxyl-3-phenoxy group-propyl group (methyl) acrylate etc.

By the epoxy acrylate that ring texture is arranged (a) with the monofunctional acrylate (b) of ring texture is arranged and the light trigger (c) that adds as required cooperates and the resin combination of the present invention that forms, acrylate-functional groups in the system is that 0.2mmol/g-5.0mmol/g is necessary, but the epoxy acrylate (a) of above-mentioned ring texture is arranged and have the monofunctional acrylate (b) of ring texture also can use separately separately, and also can two or more mixing use as required.Acrylate-functional groups concentration is lower than 0.2mmol/g, and curable reduces, and viscosity uprises, thereby the operation variation.

In addition, acrylate-functional groups concentration is higher than 5.0mmol/g, since cure shrinkage, cured sheets generation warpage.According to the acrylate-functional groups concentration of 0.2mmol/g-5.0mmol/g, curable is good, the deformation of thin membrane such as warpage in the time of preventing to solidify, and can access surface of good hardness.

Even in optics of the present invention, particularly lens array sheet also has the warpage issues that produces owing to its distortion.The optical lens of making is cut into the A4 size, lens formation face is rested on the surface level,, can estimate warpage by measuring the depth of camber of lens end from surface level.Using the warpage of the solidfied material of used for optical part ionization ray solidified resin composite of the present invention, is below the 1mm according to this evaluation method, is gratifying.

Have again, the distortion of lens array sheet, promptly the cure shrinkage of warpage and resin has substantial connection, by obtaining the cure shrinkage of the used for optical part ionization ray solidified resin composite that uses among the present invention, can determine the resin that does not produce warpage to form.Promptly, resin proportion (DS) after resin proportion (DL) before solidify and the curing, can calculate cure shrinkage according to formula 1, the cure shrinkage of the used for optical part ionization ray solidified resin composite of Shi Yonging is below 5.5% in the present invention, is gratifying.

Cure shrinkage (%)=(DS-DL)/DS * 100 (formula 1)

In addition, desirable match ratio of the present invention is that the epoxy acrylate (a) that ring texture is arranged is 10%-90%, preferably 30%-85%.

In addition, it is 10%-90% that the monofunctional acrylate (b) of ring texture is arranged, preferably 20%-70%.When having 70% above monofunctional acrylate (b), be prone to yield point in the tension test, solidfied material causes plastic yield easily.

Used for optical part ionization ray solidified resin composite of the present invention, certainly both the transparency is good, and the light transmission of the 400-900nm wavelength coverage of thick 0.4mm thin slice is more than 80% at least, is more than 85% mostly, and best is that transmissivity is more than 90%.

Even in optics of the present invention, lens array sheet especially, the problem that stays trace that also has the distortion that causes because of external force not recover to produce.Lens array sheet is made as the long ribbon shape thin slice on making, and is wound into paper roll manufacturing, preserves, and the thin slice end is fixed on the paper roll with adhesive tape at this moment, and lens array sheet is wound into paper roll.In the case, the protuberance of adhesive tape part is given prominence to as the step discrepancy in elevation, produces distortion on lens array sheet.If this crushed element forms permanent strain, just become the so-called trace that stays.

Only on a part of unit area that is the optical lens made, apply pressure arbitrarily, place the time arbitrarily, when removing this pressure, to confirm that whether having trace to estimate stays trace.Specifically, place thick 75 μ m, 1 inch tetragonal adhesive tape on iron flat board, the lens array sheet of stacked thereon 60 10cm * 10cm is under the condition of 40 ℃ of temperature, with 500g/cm ²Load loaded three days, remove load after, according to utilizing transmitted light and catoptrical visual judgement, prove from the 21st later sheet of adhesive tape and does not see the vestige that stays trace, can make thus practical on the lens array sheet of no problem.

Optics made in accordance with the present invention during fabrication and when display is installed, the possibility of the paint film defect that produces scar etc. is arranged, but because use as optics, the scar that these are small becomes fatal defects on the solidfied material surface.Therefore, the demanding skin hardness of the resin combination of Shi Yonging specifically, as pencil hardness, according to JIS K-5400, is to be desirable more than the H in the present invention.

In addition, as required, in resin combination, for coating modification and for improve brushing adaptability, from the release property of pattern master, as various adjuvants, also can add ultraviolet light absorber, light stabilizer, antioxidant, rheology control agent, silicon additive, defoamer etc.

In the present invention, as solidifying energy line, use the ionization ray.As the ionization ray, use electromagnetic waves such as luminous ray, ultraviolet ray, X ray, the perhaps charged particle line of electron beam etc., but handy in the practicality among them be luminous ray, ultraviolet ray or electron beam.Especially use luminous ray or ultraviolet ray, when resin modulator of the present invention and resin combination are solidified, utilize the ultraviolet ray or the luminous ray of wavelength 1000-8000 dust to dissociate, should use to produce such light (polymerization) initiating agent (C) of atomic group.

As such light (polymerization) initiating agent, known habitual light trigger can use, enumerate representation example wherein, for example can enumerate, 4-dimethylamino benzoic acid, 4-dimethylamino benzoic ether, the alkoxy acetophenone, benzyl dimethyl ketal, benzophenone and benzophenone derivates, the benzophenone alkyl formate, two (4-dialkyl amino phenyl) ketone, benzyl and benzyl derivative, benzoin and benzoin derivatives, benzoin alkylether, 2-hydroxy-2-methyl propiophenone, the 1-hydroxycyclohexylphenylketone, thioxanthones and thioxanthone derivates, 2,4,6-trimethyl benzoyl diphenyl phosphine oxide, 2-methyl isophthalic acid-[4-(methyl mercapto) phenyl]-2-morpholino propane-1,2-benzyl-2-dimethylamino-1-(4-morpholino phenyl)-butanone-1 etc.

Among them, because from 1-hydroxycyclohexylphenylketone, thioxanthones and thioxanthone derivates, 2,4, the curable height of the mixed stocker of one or two or more kinds that select in 6-trimethyl benzoyl diphenyl phosphine oxide, 2-methyl isophthalic acid-[4-(methyl mercapto) phenyl]-2-sign indicating number quinoline generation-1-propane, 2-benzyl-2-dimethylamino-1-(the 4-morpholino phenyl)-butane-1-ketone is so be desirable especially.

It is suitable that light trigger adds to the scope of 10% (weight) with 0.5% (weight).In addition, in light (polymerization) initiating agent, also can be used in combination known habitual photosensitizer.

As such photosensitizer,, be amine, urea class, sulfocompound, phosphorus-containing compound, chlorine-containing compound or nitrile or other nitrogen-containing compound etc. if an example illustrates representative.

Use the manufacturing of the optics of used for optical part ionization ray solidified resin composite of the present invention, because be mostly energy lines such as transparent substrate face (transparent resin layer of sheet (C)) irradiation ultraviolet radiation by becoming support, so the light trigger that can use preferably has the initiating agent of extinction ability in long wavelength's scope, ultraviolet ray wishes to use the light trigger that light-initiated ability is arranged in 360nm to 450nm scope, especially in 400nm to 440nm.Absorb the initiating agent of the above light of 450nm, worsen the stability of composition, must make under the environment that covers light fully, its operation becomes extremely difficult.

As the initiating agent that extinction, initiating power are arranged in such optical wavelength, can enumerate 2,4,6-trimethyl benzoyl diphenyl phosphine oxide, thioxanthones and replacement thioxanthene ketone, 2-benzyl-2-dimethylamino-1-(4-morpholino phenyl)-butanone-1,2-benzyl-2-dimethylamino-1-(4-morpholino phenyl)-butane-1-ketone etc.

In addition, when using electron beam, do not need these light triggers and photosensitizer.

It is a kind of lens array sheet of optics of the present invention, be that above-mentioned ionization ray solidified resin composite layer (A) is coated on the relief pattern of the pattern master with desirable fine shape, with its filling, after utilizing the ionization radiation exposure that ionization ray solidified resin bed is solidified, peel off from this pattern master, be made as the lens array sheet of replicating master molds type microstructure.

At this moment, the transparent resin layer (C) of the sheet of adhering again on another surface that is coated with, is filled in the lip-deep said composition of pattern master (A) is desirable at this state irradiation ionization ray.The transparent resin layer of this sheet (C) is then peeled off behind solidification process if do not need in end article.

Adhesive layer (B) is not necessarily necessary, according to the bonding degree of ionization ray solidified resin composite layer (A) with the transparent resin layer (C) of sheet, and, between the transparent resin layer (C) of sheet and ionization ray solidified resin composite layer (A), form as required as the performance requirement of purpose optics.

Here the transparent resin layer of said sheet (C) uses for the purpose of the physical strength that gives lens array sheet and for the flatness of the pattern master opposite sides that obtains having microstructure.In the finished lens array chip, do not use under the situation of such sheet transparent resin layer (C), in order to obtain such even surface, ionization ray solidified resin composite layer (A) is clipped between pattern master and the sheet transparent resin layer (C), under this state, be cured, then, peeling off sheet transparent resin layer (C), is gratifying.

In addition, when particularly using ultraviolet ray, utilize the transparent resin layer (C) of sheet can prevent that the obstruction that is caused by airborne oxygen from solidifying, so also be gratifying as the ionization ray.In addition, in the connection side of sheet transparent resin layer (C), also can implement the known demoulding as required and handle to ionization ray solidified resin composite layer (A).

On the other hand, when the transparent resin layer (C) of no sheet, the thickness thickening of ionization actinic radiation-curable resin bed, though be the intensity of considering to keep lens array sheet, but the thickness thickening of ionization actinic radiation-curable resin bed, transfiguration easily produce the degree of cure degree heterogeneity and the curing deformation of film thickness direction.Institute sees it is the Perfected process that lens array sheet is made so that sheet transparent resin layer (C) and ionization actinic radiation-curable resin bed (A) are integrated from intensity.

Sheet transparent resin layer (C) as such for physical impact, has physical strengths such as fracture strength, tensile strength, and it is necessary having homogeneous film thickness, flatness, the transparency, flexibility, permanance.

This transparent resin layer (C), specifically, it is desirable to the sheet transparent resin layer, particularly 20 microns sheet transparent resin layers to the 1mm degree are desirable, from the viewpoint of processability, film rerum natura, the transparency, especially 50 microns to 150 microns is suitable.In addition, with under layer (C) and the situation of former state that contact of layer (A) as end article, in order to improve the stickability with ionization ray solidified resin bed (A), Corona discharge Treatment, plasma treatment, easy the bond easy binder-treatment of primary coat cloth etc. also can be carried out in the surface of transparent resin layer (C).

Specifically, can use acrylic ester thin slice, polycarbonate-based thin slice, vinyl chloride thin slice, thin polystyrene sheet etc. such as the good polyester sheet such as two-way stretch polyethylene terephthalate of the transparency, polymethylmethacrylate.Particularly from permanance, PET series or polycarbonate-based thin slice are desirable.

In the present invention, duplexer as sheet transparent resin layer (C) and ionization ray solidified resin composite layer (A), in the occasion that constitutes lens array sheet, the permanance of certain ionization ray solidified resin bed (A), the sticking network of permanance, ionization actinic radiation-curable resin bed (A) and sheet transparent resin layer (C) that becomes the sheet transparent resin layer (C) of matrix material in addition are important, for this reason, between sheet transparent resin layer (C) that becomes matrix material and ionization actinic radiation-curable resin bed (A), adhesive layer (B) can be set.

Promptly, specifically, it is the tack coat of feature that tack coat (B) can be enumerated with the following substances: the tack coat of being made up of celluosic resin (b1) and polyisocyanate (b2), the tack coat of being made up of vibrin (b3) and the polyisocyanate (b2) of molecular weight 3000-30000 is by the vibrin (b3) of molecular weight 3000-30000 with by the epoxy acrylate of ring texture and light trigger is that form and tack coat that this epoxy acrylic ester content is 10%-60%.

As lens array sheet, can enumerate the solidfied material layer of forming by the used for optical part ionization ray solidified resin composite (A), the tack coat (B) that celluosic resin (b1) and polyisocyanate (b2) are formed, the lens array sheet that the sheet transparent resin layer (C) that polyester or polycarbonate are formed constitutes, the solidfied material layer of forming by resin combination (A), the tack coat (B) that the vibrin of molecular weight 3000-30000 (b3) and polyisocyanate (b2) are formed, the lens array sheet that the sheet transparent resin layer (C) that polyester or polycarbonate resin are formed constitutes, the solidfied material layer of forming by resin combination (A), the vibrin of molecular weight 3000-30000 and epoxy acrylate and light trigger that ring texture is arranged, and the epoxy acrylic ester content is the tack coat (B) that the resin combination of 10%-60% is formed, the lens array sheet that the sheet transparent resin layer (C) that polyester or polycarbonate resin are formed constitutes.

But, it is enough becoming the transparent resin layer (C) of matrix material and the cohesiveness of ionization ray solidified resin bed (A), perhaps by to the Corona discharge Treatment on transparent resin layer (C) surface, plasma treatment, the easy easily binder-treatment such as primary coat that bonds, under the enough situation of cohesiveness, do not need adhesive layer (B).In addition, make when cohesiveness is more firm to be purpose, also can be also with easy binder-treatment and adhesive layer (B).

As adhesive layer (B), must from having the material of good cementation power, the transparent resin layer (C) that becomes carrier and ionization ray solidified resin bed (A) two sides that form microstructure select.As adhesive layer of the present invention (B), the resin combination that the resin combination of thermoplastic resin and polyisocyanate (b2) or thermoplastic resin and acrylate compounds or polyisocyanate (b2) and polyester (b3) are formed has good cohesiveness, and it is satisfied especially using these.

As said thermoplastic resin here, can use known habitual, but the desirable celluosic resin of enumerating various cellulose esters and cellulose ether etc. (b1), various be the polyurethane etc. of the polyester based resins such as propylene base system resin, high molecular oil-free polyester such as acrylic paint of (methyl) acrylate polymer, polycarbonate-based resin, polyester and polyethers system.

Among these, especially celluosic resin (b1), vibrin (b3) are desirable.

Here said cellulose ester resin is to make hydroxylic moiety ground esterification in the cellulose with acids, utilizes nitric acid, sulfuric acid, acetate, propionic acid, butyric acid, other more than one the esterification of acid of higher fatty acid etc. to obtain.

Especially, it is desirable to use cellulose ester resin by acetate, propionic acid and butyric acid esterification.Cellulose ether resins also can be used with cellulose ester resin the samely.In addition, it also is desirable using the celluosic resin with ester and ehter bond.

As said vibrin (b3) here, be to utilize saturated, the pure and mild polyprotonic acid of unsaturated polyester, perhaps with the esterification of lower alkyl esters and ester exchange reaction and the known habitual vibrin that obtains.Molecular weight 3000-30000 is desirable.As such polyalcohols raw material, can use known habitual, but the representation example of enumerating wherein is an ethylene glycol, 1, ammediol, 1, the 2-propylene glycol, diglycol, dipropylene glycol, neopentyl glycol, 1, the 3-butylene glycol, 1, the 4-butylene glycol, 1, the 6-hexanediol, 1, the 9-nonanediol, 1, the 10-decanediol, 2,2,4-trimethyl-1, the 3-pentanediol, the 3-methyl isophthalic acid, the 5-pentanediol, the dichloro neopentyl glycol, dibromoneopentyl glycol, hydroxyl trimethylace tonitric DOPCP, the cyclohexane dihydroxymethyl, 1, the 4-cyclohexanediol, trimethylolethane, trimethylolpropane, glycerine, 3-methylpropane-1,3, the 5-triol, pentaerythrite, dipentaerythritol, tripentaerythritol, spiral shell ethylene glycol, three ring dihydroxymethyls in the last of the ten Heavenly stems, hydrogenated bisphenol A etc.

Have again, as the polyprotonic acid compound, can use known habitual various carboxylic acids, perhaps its acid anhydrides, and the carboxylate of these carboxylic acid compounds and low-grade alkane alcohol, but only limit to exemplify out the representational especially example in them, can enumerate maleic acid, fumaric acid, itaconic acid, citraconic acid, tetrahydrophthalic acid, HET acid, himic acid, the acid of Network ロ レ Application デ イ Star Network, dimer acid, hexane diacid, succinic acid, alkenyl succinic, decanedioic acid, azelaic acid, 2,2, the 4-trimethyladipic acid, 1, the 4-cyclohexane dicarboxylic acid, terephthalic acid (TPA), 2-sodium sulfo group terephthalic acid (TPA), 2-potassium sulfo group terephthalic acid (TPA), m-phthalic acid, the 5-sodiosulfoisophthalic acid, 5-potassium sulfoisophthalic acid, perhaps as two-lower alkyl esters class of the 5-sodium-sulfoisophthalic acid of dimethyl esters or diethyl ester, perhaps positive phthalic acid, 4-sulfo group phthalic acid, 1,10-ring decyl dicarboxylic acid, muconic acid, oxalic acid, malonic acid, glutaric acid, these three acid partially, hexahydro-phthalic acid, the tetrabormated phthalic acid, methylcyclohexene tricarboxylic acids or petroleum benzene pregnancy acid, perhaps their acid anhydrides, perhaps methyl alcohol, alcohol ester compounds such as ethanol or the like.

In addition as said (methyl) acrylate here, can use known habitually, more specifically can enumerate (methyl) alkyl acrylates such as (methyl) methyl acrylate, (methyl) ethyl acrylate and have (methyl) acrylate, polyoxy alkylidene acrylate of ring texture etc.

In addition,, can enumerate gamma-butyrolacton, gamma-valerolactone, δ-Wu Neizhi, 6-caprolactone, the acid-1 of D-grape, 4-lactone, 1, lactone such as the luxuriant and rich with fragrance acid lactone of 10-, 4-amylene-5-lactide, 12-dodecane lactide as the cyclic ester compound.

In addition, as the acrylate compounds that can be used for tack coat ideally, usually can use the acrylate that uses as reactive diluent and various acrylate oligomer, acrylate polymer, as these acrylate compounds, epoxy acrylate, urethane acrylate, polyester acrylate, polyether acrylate etc. can use separately or merge more than two kinds and use.

Wherein, from the close-burning viewpoint of ionization ray solidified resin bed with fine pattern, the epoxy acrylic ester compounds is desirable especially.Epoxy acrylate as here using can use the epoxy acrylic ester compounds that exemplifies out in above-mentioned ionization ray solidified resin composite, and these acrylate compounds are that 10%-60% in the tie layer resins is suitable.

Acrylate compounds is 10% when following, reduces with the cohesiveness of the ionization actinic radiation-curable resin bed that becomes the tack coat upper strata, and whiting occurs in water resistant test.In addition, the amount of acrylate compounds is 60% when above, easily produces the disadvantage that the cohesiveness with matrix material reduces.

In addition, as the polyurethane of polyester and polyethers system etc., can use polyester polyalcohols about the about 500-4000 of above-mentioned molecular weight of polyesters and polyglycol, polypropylene glycol, poly-1, the polyalkylene oxides of 4-butylene glycol etc. reacts the urethane resin that obtains with polyisocyanate.

As said polyisocyanate here, can use separately, perhaps also can also use with the polyisocyanate and the isocyanate compound of cyamelide esterification form, certainly, the known habitual above isocyanates of two senses can use, but, can enumerate as toluene diisocyanate if only limit to exemplify out their representative, methyl diphenylene diisocyanate, Xylene Diisocyanate, double-hexyl methane diisocyanate or isophorone diisocyanate, the various ester ring type diisocyanate cpds of hydrogenated xylene diisocyanate, perhaps as all cpds such as various aliphatic diisocyanate compounds of HDI or lysinediisocyanate or the like.In addition, can use above-mentioned isocyanate-monomer and biuret, allophanate, cyamelide esterification the isocyanates condensate, also have the polyalcohols reaction and the polyisocyanate that obtains.They can use separately, also can merge use.Among them, the polyisocyanate compounds that has the isocyanate group more than 3 in molecule is desirable, and especially the polyisocyanate of being derived by HDI is desirable.

The ratio of thermoplastic resin and polyisocyanate, it is the ratio (OH equivalent/NCO equivalent ratio) of the isocyanate equivalent of the hydroxyl equivalent of thermoplastic resin and polyisocyanate, with the scope of 0.1-5, the range fit of best 0.1-1, be expected to improve close-burning reliability.As the thickness of adhesive layer (B), 0.2 micron to 10 microns scope is suitable in addition.

Go up coating adhesive layer (B) at the transparent resin layer (C) of sheet, set necessary set time, or add that temperature makes volatilizations such as solvent.Then, be coated with ionization ray solidified resin bed (A), bonding pattern master with desirable fine shape is under this state, make ionization ray solidified resin bed carry out the ionization actinic radiation-curable, can obtain the bonding of thin slice and ionization actinic radiation-curable layer thus.

In addition, at adhesive layer (B), especially in the resin combination system of thermoplastic resin and acrylate compounds, add light (polymerization) initiating agent, but,, it is desirable to use above-mentioned light trigger as such initiating agent from improving reactive viewpoint of tack coat.

As a kind of lens arra piece making method of the optics that is to use ionization ray solidified resin composite of the present invention, can use known various manufacture method, be not particularly limited, but as desirable method, for example using, United States Patent (USP) 3689346,4576850, special public clear 63-50066, spy open the manufacture method that discloses among the flat 5-169015.The summary of lens arra piece making method is described with Fig. 4 below.

In Fig. 4, the 1st, form desirable concavo-convex roller intaglio plate, the 2nd, the recess of this roller intaglio plate 1, the 3rd, uncured ionization ray solidified resin liquid, 3a is the ionization ray solidified resin that solidifies, the 4th, and the transparent base material piece (C) of additional adhesive layer (B) as required, the 5th, the compression roller of extruding roller intaglio plate 1,6 and 8 is conveying rollers, the 7th, the ionization beam exposure apparatus, the 9th, as the purpose lens array sheet, the 10th, T type nozzle, the 11st, drying device, the 12nd, liquid stream.

As the method that ionization ray solidified resin 3 is filled into the recess 2 of roller intaglio plate 1, as shown in Figure 4, on the surface of roller intaglio plate 1, be coated with in advance in the ionization ray solidified resin liquid 3 of specified rate, with matrix material sheet 4 feed roller intaglio plates 1 time, compression roller 5 pushes from the matrix material rear side, by matrix material sheet 4, applied ionization ray solidified resin liquid 3 is assigned in the recess 2 fills.

In the case, can use solvent type curable resin, utilize drying device 11 to make solvent evaporates and remove.Ionization beam exposure apparatus 7 as shown in Figure 4, can be one, but also several solidification equipments can be set, and 3 multistages of the resin liquid ground in the roller intaglio plate 1 is solidified.If do like this, even the translational speed of matrix material sheet 4 is fast, also obtain enough exposures, in addition, utilize lentamente and solidify, reduce the curing deformation of resin liquid 3, the warpage of matrix material sheet 4, thereby be gratifying.

Then, matrix material 4 connect roller intaglio plates 1 during (specifically between compression roller in figure 5 and the conveying roller 6 during), utilize ionization beam exposure apparatus 7 that ionization ray solidified resin 3 is solidified.Moreover, when utilizing ionization beam exposure apparatus 7 irradiation ionization rays, many matrix material 4 sides are carried out, the roller intaglio plate is formed by the good material of transmittance of ionization rays such as quartz, glass, can shine (specifically, utilizing the irradiation unit that is arranged in roller is hollow to carry out) from the private side of roller intaglio plate 1.In addition, also can shine from matrix material sheet side and intaglio plate private side two sides.

Utilize ionization beam exposure apparatus 7, ionization ray solidified resin 3 curing in the recess 2 that is in roller intaglio plate 1 are bonded on the matrix material sheet 4.Behind ionization beam exposure apparatus 7, matrix material 4 is peeled off from roller intaglio plate 1.With this, the ionization ray solidified resin liquid 3a and the matrix material sheet 4 of curing become one, and break away from from recess 2, just obtain the lens array sheet 9 of convex-concave surface.

Have again, in the above-mentioned manufacture method of picture, as transparent base material piece 4, for example can use by vibrin such as polyethylene terephthalate, polybutylene terephthalate, poly-naphthalenedicarboxylic acid ethylidene esters, acrylate resins such as polymethylmethacrylate, the thin slice that thermoplastic resins such as polycarbonate resin, polystyrene resin etc. are formed.The operation aspect decision that thickness is handled etc. by device, but 10-1000 μ m degree normally.

In the stage of end article, if do not want the matrix material sheet, have at this matrix material sheet apply the above-mentioned method for making of processing (release property resin beds such as silicone-coating, melamine resin or the like) of giving release property on the side of lens arra in advance and finish the solidfied material of ionization ray-curable resin after, this matrix material sheet can be peeled off from lens array sheet and be removed.

The ionization ray of so-called ionization beam exposure apparatus is meant in electromagnetic wave or the charged particle line to have the ray that can make molecule aggregation, the crosslinked quanta of energy, usually use ultraviolet ray, electron beam etc., in ultraviolet occasion, can use light sources such as extra-high-pressure mercury vapour lamp, high-pressure mercury-vapor lamp, Cooper-Hewitt lamp, carbon arc, near ultraviolet light modulation, metal halide lamp.The main usually wavelength zone that uses the 1900-3800 dust of ultraviolet wavelength.

The occasion of this external electron beam, can use have Cockcroft-Wal pause type, Wan Te-Ge Lafu type, resonance transformer formula insulating core transformer type or linear pattern, the device of irradiation source of various electron-beam accelerators such as that meter type, high-frequency type etc., irradiation have 100-1000keV, preferably 100-300KeV can electronics.As the illuminated line amount, the 0.5-30Mrad degree is desirable usually.

Solvent seasoning device 11 among Fig. 4 is to be used to volatilize the device of solvent of resin.As solvent seasoning device 11, can use warm wind, infrared heater etc.Moreover, when using the ionization ray solidified resin of no-solvent type, do not need drying device 11.

Below, object lesson as optics of the present invention, the oblique view of representative shape of the formed lens array sheet of expression in Fig. 5-9, this lens array sheet are that the unit lenses that will be made up of the solidfied material of ionization ray solidified resin is in one dimension direction or two-dimensional directional assortment.

Fig. 5 uses triangular prism prism (lens) as unit lenses 41, a plurality of in the plane these unit lenses are pressed its knuckle line adjacency in parallel to each other, in one dimension direction (with the knuckle line parallel direction) assortment,, be so-called triangular prism prism linear array sheet as lens array sheet 9.Apex angle ss is represented about 60 °-120 ℃, and repetition period P represents 20 μ m-500 μ m.

Fig. 6 uses semicolumn or half elliptic convex lens as unit lenses 41, and a plurality of these unit lenses are pressed its knuckle line direction adjacency in parallel to each other, in one dimension direction (with the knuckle line parallel direction) assortment, as lens array sheet 9, are so-called biconvex lens.

Fig. 7 changes the unit lenses among Fig. 6 into concavees lens from convex lens, is also referred to as concavees lens shape biconvex lens.

As unit lenses, a plurality of these unit lenses as lens array sheet 9, are so-called fly lens in the two-dimensional directional assortment to Fig. 8 with hemisphere or half ellipsoid of revolution.

Fig. 9 be with rectangular pyramid as unit lenses, a plurality of these unit lenses are in the two-dimensional directional assortment, as lens array sheet 9.

But Fig. 5-Fig. 9 only is the part of lens array sheet, and lens array sheet of the present invention is not limited to these.For example, being also included within the optics of the present invention as following.

(1) as Fresnel lens, the shape of each unit lenses can differ from one another, and perhaps unit lenses can ground assortment (on the other hand, the lens of Fig. 5-9 are the cycle assortment lens with unit lenses of a plurality of same shapes of assortment) non-periodic.

(2) unit lenses can be any of convex lens, concavees lens, also can be the combination of concavees lens and convex lens.

(3) have, the lens notion among the present invention is by the refraction transmitted light or with the reflection of inner face, light is given the general name of the element of modulation such as light harvesting, deflection, diffusion, control, also comprises prism, diffraction grating, holograph etc. again.

(4) lens array sheet of the present invention can like that only use one piece by image pattern 5-9, and is if necessary also can image pattern 10 such, stackedly uses more than two pieces.For example image pattern 10 is such, if two pieces of lens array sheets are stacked mutual vertically along its knuckle line, then can both carry out control, the modulation of transmitted light at directions X and Y direction.

(5) lens array sheet 9 of the present invention, image pattern 5,7,8 and 9 is such, it can be the single layer structure that the solidfied material by ionization ray solidified resin composite constitutes, perhaps image pattern 6 is such, also can form the two-layer structure of lens arra (41) on the surface of transparent matrix material sheet (also comprising plate, film) 4.

(6) lens array sheet of the present invention, image pattern 5-9 is such, except having the lens arra on the one side of sheet, also can on the two sides of sheet lens arra be arranged.

Pattern master as fine shape with lens array sheet, it is the model that to give Fresnel lens, biconvex lens and Off ラ イ ア イ (fly's eye) lens, perhaps change shape, for example can form the same shape of polygonal pyramid, the frustum of a cone or polygonal pyramid platform and a plurality of shapes of assortment isotropically in the plane with the one kind as it.Here as pyramid or pyramid, if use positive triangular pyramid (or frustum), positive rectangular pyramid (or frustum), positive hexagonal pyramid (or frustum), then planar can seamlessly arrange, and shape also is isotropic, can keep equal half-value angle in level and vertical direction, the change that does not cause because of the place is arranged, and is desirable.

Perhaps, with the opticator shape of the prism element arrangement of several continuous trihedral prisms or four sides rib body etc. be identical shaped, can use the metallic or the plastic model of opposite convex-concave shape face.So in addition pattern master can be made fine shape in the plane, and can be manufactured on the drum surface again has fine shape.

The following describes about area source of the present invention.

Area source of the present invention at least by the dull and stereotyped light conductor of forming of light transmission, with this light conductor side end face in one with top in abutting connection with the light source cell that is provided with, be arranged on the reflection layer of above-mentioned light conductor the inside and stacked one piece or two pieces of opticses of the present invention (lens array sheet) formation on the light emergence face on above-mentioned light conductor surface, generally being called edge light profile light source, is its typical example.

The oblique view of an example of area source of the present invention shown in Figure 11.At least reflection layer 53 and the optics of the present invention (lens array sheet) 9 that joins in abutting connection with the wire that is provided with or point source of light 52, with light conductor 51 by light conductor 51, with at least more than one face of the side end face of light conductor 51 constitutes.In addition, around light source 52, also have the lampshade 54 that inner face is a reflecting surface usually.

Usually, light conductor 51 uses the transparent panel about the 1-100mm that is made of acryl resin, polycarbonate resin, glass etc.Transparent panel can be whole homogeneous thickness, but far away more apart from the distance of light source, if thickness is thin more, the brightness of output light becomes evenly with regard to not depending on apart from the distance of light source, and this is desirable.In light source 52, use fluorescent lights such as cold-cathode tube as line source, use incandescent lamp bulb, light emitting diode etc. as pointolite.

Reflection layer 53 is used for scattered reflection light, and general using white ink printing etc. form the dot pattern of light scattered reflection, also forms metal film with evaporation and plating on its inside.In addition, usually far away more apart from the distance of light source, the area of the dot pattern by increasing light scattered reflection is got over homogenising from the light quantity of light emergence face.In addition, configuration light spreads transparent sheet between light conductor 51 and lens array sheet 9, and light is spread equably, nor can see the light diffusion dot pattern of reflection layer 53.

When lens array sheet was installed on the area source, certain side of lens was the light guide plate side, perhaps also may be towards with any side of light guide plate opposition side (penetrating the exiting surface side).

In addition, piece number of lens array sheet can be one piece, but under the situation of lens pillar, in order to control the light spread angle of two directions (above-below direction and left and right directions), as shown in Figure 10, can two pieces of lens array sheets are stacked (intersecting vertically in the figure) by the knuckle line intersection of unit lenses.In the case, the direction of the face (to call lens face in the following text) of lens arra is arranged, if two pieces all is same direction, transmitance is just high, in addition, because can prevent the moire fringes of the microspike of the lens of lens array sheet of downside and upside lens array sheet the inside, so be gratifying.Certainly, also can make the opposed direction that makes of lens face of two pieces of lens array sheets relative.

Edge light profile light source of the present invention can be used for various uses, for example billboard of transmissive liquid crystal display and fill light, billboard, traffic indicateing arm, and the negative-appearing image of photo, erect image etc. are observed the light table of usefulness, room lighting etc.Figure 12 is a configuration transmissive liquid crystal display plate 60 on the area source 100 of Figure 11, as the example of liquid crystal indicator (LCD) 200.

As the ideal performance of area source, for example open existing description the in flat 5-169015 and other known data the spy, the brightness of the unwinding direction of display frame (normal brightness) is 1000cd/cm normally ²More than, but area source generally is become clear good, the upper limit of unnecessary regulation normal brightness.

In addition, TV, character code processor, LCD panel etc., because the needs in the visual field of horizontal direction, it is desirable to, the brightness that is caused by the light diffusion from unwinding direction reduces seldom, the brightness that is normal direction does not reduce on a large scale, and preferably, the angle (half-value angle) of a half intensity that becomes normal brightness is wide.Usually, the half-value angle of the area source that uses in these purposes is 30-90 °, preferably 45-90 °.

Be described more specifically the present invention according to embodiment, comparative example below, but the present invention is not limited thereto.In addition, umber and % in the example are if not special explanation all is a weight basis.

Synthesis example 1

The 6-caprolactone of 350 parts by weight and the ring-opening reaction thing of hydroxyethyl acrylate (the OH value=165KOH-mg/kg) of in the flask that has thermometer, stirrer and condenser, packing into, dripped in the 1 hour biuret type polyisocyanate (NCO%=23.3%) of HDI of 180.3 parts by weight of warming while stirring to 60 ℃, marginal not meaning heating limit reacts.Reaction was carried out 10 hours, utilized infrared absorption spectrum to confirm to eliminate after the absorption of isocyanate group, and the two isocyanic acid DOPCP of adding 123 parts by weight make its dissolving, obtain having the composition (S-1) as the ring texture of purpose.

Synthesis example 2

The 6-caprolactone of 350 parts by weight and the ring-opening reaction thing of hydroxyethyl acrylate (the OH value=165KOH-mg/kg) of in the flask that has thermometer, stirrer and condenser, packing into, dripped in the 1 hour isocyanuric acid ester type polyisocyanate (NCO=23.8%) of hexamethylene diisopropyl olefin(e) acid ester of 177 parts by weight of warming while stirring degree to 60 ℃, marginal not meaning heating limit reacts.Reaction was carried out 10 hours, utilize infrared absorption spectrum to confirm to eliminate after the absorption of isocyanate group, add two isocyanic acid DOPCP of 123 parts by weight, make its dissolving, obtain having composition (SH-1) as the ring texture and the soft part (ε-own ester) of purpose.

Compare synthesis example 1

In the flask that has thermometer, stirrer and condenser, pack into the methyl diphenylene diisocyanate of 524 parts by weight, warming while stirring to 60 ℃, the 6-caprolactone and 1 of 520 parts by weight dripped in 1 hour on marginal not meaning heating limit, the ring-opening reaction thing of 6-hexanediol (OH value=215KOH-mg/kg), react.Reaction was carried out 10 hours, and the hydroxyethyl acrylate of after this adding 232 parts by weight is carried out reaction in 10 hours again.Confirm to have eliminated the absorption of isocyanate group with infrared absorption spectrum, obtain having the urethane acrylate (RSH-1) of the hard portion and the soft part of comparative control example.

Compare synthesis example 2

In the flask that has thermometer, stirrer and condenser, pack into the isophorone diisocyanate of 444 parts by weight, warming while stirring to 60 ℃, 1 of 2200 parts by weight dripped in 1 hour on marginal not meaning heating limit, the polyester-diol of 6-hexanediol and hexane diacid (OH value=51KOH-mg/kg), react.Reaction was carried out 10 hours, and the hydroxyethyl acrylate of after this adding 232 parts by weight was reacted 10 hours again.Confirm to have eliminated the absorption of isocyanate group with infrared absorption spectrum, add the tripropylene glycol diacrylate of 1917 parts by weight again, it is dissolved fully, obtain having the urethane acrylate (RSH-2) of the hard portion and the soft part of comparative control example.

Embodiment 1-12

Adjust optical sheet ionization ray solidified resin composite (A) according to the cooperation of table 1.Then, use device shown in Figure 4, axle rotation rotationally on one side has the anti-concavo-convex metallic roller intaglio plate identical shaped with the retroreflective lens from the teeth outwards, to be coated on this roller surfaces from the ionization ray solidified resin composite (A) of T model nozzle on one side, described reflectivity lens have the shape that will line up with the continuously arranged positive tetrahedron of 50 μ m pitches at several two-dimensional directionals, with with speed limit moving sheet transparent resin layer (C) (the clear PET film: Corona discharge Treatment on the face) of peripheral speed same period of this roller intaglio plate, the limit is adjacent to the Corona discharge Treatment face of this clear PET film and this roller intaglio plate surface, make ionization ray solidified resin composite (A) mediate, intactly from the PET film side, with 2 high-pressure mercury-vapor lamps (160W/cm), distance with 10cm is shone, when resin bed is solidified, it is bonded on the PET film.

This moment, the ultraviolet irradiation amount in the irradiation of PET film surface was 500mj/cm ²After the curing, the PET film is stripped down from the roller intaglio plate with ionization actinic radiation-curable resin bed, manufacture the serialgram that duplicates the optical sheet of wanting the roller intaglio plate shape that obtains.As the evaluation of physical property of optical sheet and cured resin, various tests such as stay trace, warpage, adhere to, it the results are shown in the table.

In addition, the resin combination of the embodiment that adjusts is coated on respectively on the smooth glass plate of cleaning, making thickness is 60-70 μ m, with high-pressure mercury-vapor lamp (160W/cm) irradiation ultraviolet radiation (500mj/cm ²), make the curing sample.This solidfied material is carried out tension test and reactive evaluation.It the results are shown in the table.

Comparative example 1 and 2

According to the cooperation of table 2, adjust the optical sheet ionization ray solidified resin composite that comparative control is used.Make the lens array sheet and the physical property test solidfied material of identical evaluation usefulness with embodiment 1-12 about these compositions.Carry out identical comparative evaluation with embodiment, the results are shown in the table.

Embodiment 13 and 14

As the transparent resin layer (C) of sheet, use transparent PET film (thickness 100 μ m), be coated with adhesive layer (B) with roller coating thereon, make the about 1 μ m of dry film thickness.Utilize the solvent that contains in the dry binding layer composition of 80 ℃, 30 seconds heat treated this moment.The resin of adhesive linkage (B) is formed as follows.

Embodiment 13 is as the ultraviolet curing resin layer, use the composition of embodiment 1, in addition, embodiment 14 uses the composition of embodiment 6, the manufacture method of lens array sheet, except replace sheet transparent resin layer (C) (the clear PET film: Corona discharge Treatment on a face), carry out of embodiment 1-12 record method with the title film of coating tack coat (B) identically.Moreover ultraviolet curable resin layer will be manufactured on the adhesive layer (B).Evaluation result is shown in the table.

The resin of the tack coat of embodiment 13 (B) is formed

The high molecular oil-free polyester resin of 10 parts by weight (terephthalic acid (TPA), m-phthalic acid, hexane diacid, ethylene glycol, 1, the condensation body of 6-hexanediol, neopentyl glycol, molecular weight about 5000), the bisphenol A epoxy acrylate of 2 parts by weight, the toluene of 4 parts by weight, the butyl acetate of 4 parts by weight, add up to 20 parts by weight.

The resin of the tack coat of embodiment 14 (B) is formed

Cellulose acetate butyrate resin (the butylation degree 37% of 15 parts by weight; degree of acetylation 13%, remaining hydroxyl 2%), the trihydroxymethyl propane adduct type polyisocyanate (NCO%=16.7%) of the HDI of the methyl ethyl ketone of the toluene of 40 parts by weight, 40 parts by weight, 5 parts by weight, add up to as 20 parts by weight.

The evaluation of measuring method

Below put down in writing the evaluation of measuring method.

(1) viscosimetric analysis

With E type rotational viscosimeter, carry out the viscosimetric analysis (CPS) under 25 ℃.

(2) refractive index

Measure aqueous test portion and solidify test portion.Aqueous test portion directly is coated on the prism of Abbe refractometer, measures at 25 ℃.

In addition, the resin bed that will solidify on glass plate peels from glass plate, as test portion.As the intermediate liquid that test portion is bonded on the prism, use 1-bromo naphthalene, use the Abbe refractometer, measure for 25 ℃ in the test portion temperature.

(3) tension test

With the die-cut above-mentioned solidfied material sheet of the ダ of Co., Ltd. Application ベ Le society system ス-パ-ダ Application ベ Le (7113 No. 2 ダ Application ベ of JIS Le),, carry out the mensuration of fracture strength, fracture elongation, tensile modulus of elasticity as measuring sheet.But, during mensuration, in order to prevent slip with the mensuration sheet of chuck, about the outside of (25mm) between graticule up and down four locally use thick 0.3mm, iron plate and the cementing agent (East Asia synthetic chemistry society system bonding agent) of 20mm are fixing in length and breadth, as catching portion.

Testing machine uses Japan ボ-system Tan Xilun of Le De ウ イ Application society testing machine,, measures under 25 ℃, the atmosphere of relative humidity 50% as deformation velocity with 1.0mm/min.

Fracture strength, fracture elongation and tensile modulus of elasticity and rigidity modulus carry out tension test equally, and stress, elongation when measuring the sheet fracture are extended as fracture strength and fracture respectively.In addition, draw the tangent line of S-S curve (stress-strain curve), calculate tensile modulus of elasticity by its slope meter from the stretcher strain starting point.But measuring number of times is 5 times,, is shown in the table as evaluation result with its mean value.

Elasticity is estimated (σ 2/ σ 1): from the S-S curve of the above-mentioned shape shown in Figure 3 that obtains, read σ 2 and σ 1, calculate σ 2/ σ 1.

The shape evaluation of S-S curve: similarly from each S-S curve, with the picture do not have yield point as shown in Figure 1 curve as A, with the picture as shown in Figure 2 yield point is arranged curve as B, be documented in the table.

(4) stay trace

In the central authorities of level and smooth iron plate, thick 75 μ m, 1 inch square PET adhesive tape are set, the lens array sheet that is made into of overlapping thereon 60 pieces of size 10cm * 10cm becomes ultraviolet curable resin layer top, applies 500g/cm more thereon ²Load.At 40 ℃ of imposed loads intactly, place after three days, remove load, on fluorescent light, meet bright each lens array sheet of watching, perhaps use reflected light, stay trace so that visual judgement is relevant, affirmation can see that it is that the sheet that stays trace takes up from bonding for which piece.

Zero: take up on the 21st piece of later sheet from bonding and not see the vestige that stays trace.

*: take up from bonding and can both see on the 21st piece of later sheet and stay trace.

(5) light transmittance

Make the sample of thick 0.4mm, measure the light transmission of the wavelength coverage of 400-900nm, showing transmissivity more than 90% in gamut as zero (qualified), with transmissivity below this person as *.

(6) determination of pencil hardness

Measure according to JIS K5400.With more than the H as zero, with F following as *.

(7) cure shrinkage determination method

The ionization ray solidified resin composite of embodiment, comparative example is put into the internal diameter 30mm of stainless steel, the dish of high 10mm respectively, to the height that enters about 5mm, use the conveying type ultraviolet lamp of high-pressure mercury-vapor lamp (80W/cm), under air atmosphere, shine 1000mj/cm ²Ultraviolet ray, make the solidfied material that gravity test is used.

To it according to JIS K7112 B method, at 23 ± 2 ℃ of proportions (DS) of measuring solidfied materials.But, in maceration extract, use distilled water, at 23 ± 2 ℃ of proportions (DL) of measuring resin combination, calculate cure shrinkage according to following formula.Measurement result goes out with the mean value calculation of the measurement result of secondary, with below 5.5% as zero, with more than it as *.

Cure shrinkage (%)=(DS-DL)/DS * 100

(8) warpage properties determination method

The lens array sheet of making is cut into the A4 size, make sheet form towards on rest on the surface level, measure the height (mm) of the edge of optical sheet from surface level nature warpage, with below the height 1mm of warpage as zero, with more than this as *.

(9) initial stage cohesiveness is measured

Measure the clear PET of matrix material and the cohesiveness of the ionization actinic radiation-curable resin bed that forms the optics lamella according to JIS K5400.With remaining component more than 95/100 as zero, with below this as *.

(10) curable

With the high-pressure mercury-vapor lamp of 160W/cm, when the lamp height of 15cm, the irradiation of the linear velocity of 10m/min, measure to becoming surperficial noncohesive irradiation number of times.The few person's curable of irradiation number of times is good, below secondary, becoming inviscid person as zero, with must be more than this irradiation person as *.

(11) from version

After the ultraviolet curing, the PET film is peeled off from the roller intaglio plate with ionization actinic radiation-curable resin bed, when the lens arra serialgram of wanting the roller intaglio plate shape that obtains is duplicated in manufacturing, when not having big load to make when peeling off as zero, peel off loud when peeling off and need big load, on sheet, occur person's conducts such as folding line *.

(12) the initial stage outward appearance is judged

With the outward appearance after the visual judgement optical sheet manufacturing.Criterion obtaining uniform lens surface shape as zero, is omitted as △ partly to see crackle and shape, with see all sidedly crackle and shape omit as *.

(13) boiling water cohesiveness is measured

The optical lens of making flooded 4 hours in the boiling water more than 95 ℃, took out in room temperature, measured 2 hours later cohesiveness according to JIS K5400.

Sticking the containing of small pieces that 100/100 representation in components is all.Zero/100 all small pieces of expression are peeled off.

(14) ocular estimate behind the boiling water

The optical lens of making flooded 4 hours in the boiling water more than 95 ℃, took out in room temperature, was coated with membrane stage with the visual valuation outward appearance.

(15) quicken weather-proof cohesiveness

(ス ガ testing machine: it is difficult 63 ± 3 ℃ of blackboard thermo detector temperature) optical lens of making to be carried out the weather-proof examination of 400 hours acceleration, measures cohesiveness according to JIS K5400 with the sun-proof testing machine.

The resin abb. that uses in embodiment and comparative example is expressed as follows.

BBA: tetrabromobisphenol A type epoxy acrylate

BBF: tetrabromobisphenol F type epoxy acrylate

BA: bisphenol-a epoxy acrylate

BF: Bisphenol F type epoxy acrylate

HBA: hydrogenated bisphenol A type epoxy acrylate

PIPA:2-phenyl-2-(4-acryloyl group hydroxyl-oxethyl phenyl) propane

BPOA:2,4,6-tribromo phenyl acrylate

BPOEA:2,4,6-tribromo-benzene base oxethyl acrylate

IBA: isobornyl acrylate

THFA: tetrahydrofurfuryl acrylate

GCMA: glycidyl cyclic carbonate ester methyl acrylate

PGA: phenyl glycidyl ether acrylate

The #184:1-hydroxycyclohexylphenylketone

D1173:2-hydroxy-2-methyl-1-phenyl-propane-1-ketone

The unit representation of the evaluation result in the table is as follows.

Viscosity: cps/25 ℃

DB concentration: the concentration of the acrylate-functional groups in the resin combination (mmol/g)

D1: aqueous refractive index (25 ℃)

D2: solidfied material refractive index (25 ℃)

Fracture strength: kg/cm ²

Fracture elongation: %

Elastic modulus (tensile modulus of elasticity): kg/cm ²

σ 2/ σ 1: elasticity evaluation

The shape evaluation of SS:S-S curve

Light transmission: utilize the transparency evaluation of full light transmittance

Hardness: with the evaluation of (6) determination of pencil hardness

Cure shrinkage: with the evaluation of (7) cure shrinkage determination method

Warpage: with the evaluation of (8) warpage properties determination method

Adhere to: with the evaluation of (9) initial stage cohesiveness mensuration

Curable: with the evaluation of (10) curable

In addition, (a) expression in the table has the epoxy acrylate acrylate-based more than two that has of ring texture, and (b) expression has the monofunctional acrylate of ring texture, (c) the expression Photoepolymerizationinitiater initiater.

Figure 13,14 and 15 is drawing stress (kg/cm of the resin combination solidfied material that obtains of each embodiment 1,6 and 11 of expression ²) and the figure of strain (%) relation.These are as an example of the S-S curve of embodiment.In the S-S of all embodiment curve, all can't see yield point.In addition, Figure 16 is the drawing stress (kg/cm of the resin combination solidfied material that obtains of expression comparative example 1 ²) and the graph of a relation of strain (%).See tangible yield point.Though do not illustrate σ 2 and σ 1 in addition especially, in table, put down in writing the ratio of σ 2/ σ 1 that measures.

The making of embodiment 15 area sources

The lens array sheet that uses embodiment 1-10 to make is made edge light profile light source as shown in figure 11 respectively, estimates the performance as area source.

Light guide plate

Thick 4mm, area are 9.4 inches of diagonal angle line lengths, and material is a transparent acrylic resin.

Plate light diffusive reflective layer

Use white ink (use titanium oxide pigments) on light guide plate the inside, carry out the printing of scatter diagram case shape, stacked aluminium-vapour deposition PET film on its inside again is as specular layer.The area occupation ratio of scatter diagram case will be with far increasing from light source.In addition, because be two lamp types, make scatter diagram case area occupation ratio be maximum in central authorities.

Light source

In the two side ends of light guide plate the fluorescent light (consume electric power 4W) of a cold cathode cast is set respectively, adding up to two diameter is 3mm, with in addition the part of mirror in the face of the light guide plate side.

Light spreads transparent thin slice

Use the superimposed sheets of the PET sheet of two pieces of high 38mm, blasting treatment.

The area source that is made into, brightness is measured with nitometer (ト プ コ Application BM-8) in the 30cm position on distance light emergence face (surface of lens array sheet).Mensuration, is measured-90 °-+90 ° scopes as the center with the normal direction (0 ° of direction) of light emergence face, measures dependence of angle (light distribution characteristic, half-value angle) simultaneously.And with Visual Confirmation as lightness distribution, change and can see and stay trace.

The measurement result of the area source of making, normal brightness all are 1200cd/cm ²(1200-1250cd/cm ²), and half-value angle also all is (65 °-75 °) more than 65 °, and, do not observe fully yet and derive from the brightness variation that stays trace, make good area source.

Table 1 embodiment cooperates table

	The embodiment resin	??1	??2	??3	??4	??5	??6	??7	??8	??9	??10	??11	??12
														???(a)	BBA	??32
BBF		??35
													BA				??55			??50	??70	??80	??70	??65
BF				??50
													HBA						??40
???(b)	PIPA	??18	??15				??50
													BPOA				??50
	BPOEA	??50	??50	??45		??60
													IBA							??30
	THFA								??20		??5
													GCMA									??30
	PGA										??30
													Synthesis example	S-1											??100
SH-1												??100
														???(c)	#184	???3	???3	???3	???3	???3						???3	???3
d1173						????3	????3	????3	????3	????3

(a) acrylate-based epoxy acrylate more than two is arranged

(b) monofunctional acrylate of ring texture is arranged

(c) light trigger

Table 2 comparative example cooperates table

Comparative example	????1	????2
			????RSH-1	????100
????RSH-2		????100
			????#184	????3	????3

Table 3 embodiment evaluation result

Embodiment	?????1	?????2	?????3	?????4	????5	?????6	????7	????8	?????9	????10	????11	????12
													Viscosity	????4900	????5850	????8000	???4200	???5500	????8700	???9200	???8300	???11000	???11500	???4500	???5600
DB concentration	????2.4	????2.4	????3.2	????3.3	???2.8	????3.6	???4.3	???4.5	???4.4	???4.2	???3.3	???3.3
													??????D1	????1.586	????1.587	????1.574	???1.576	??1.546	????1.558	???1.532	???1.538	???1.532	???1.541	???1.486	??1.49
??????D2	????1.611	????1.612	????1.596	???1.597	??1.57	????1.579	???1.551	???1.561	???1.556	???1.567	???1.501	??1.503
													Fracture strength	????750	????800	????650	???570	???520	?????450	???520	???610	???573	???650	???260	??310
Fracture elongation	????3.8	????4.2	????3.8	???2.5	???3.8	????2.7	???2.5	???3.9	???2.1	???3.5	???78	??71
													Elastic modulus	????22000	????21500	????20600	???23000	??21200	???18300	???23500	???19950	???27000	???22500	???183	??213
????σ2/σ1	????0.90	????0.89	????0.83	???0.99	???0.65	????0.91	???0.89	???0.78	???1.01	???0.83	???1.82	??2.05
													Yield point	?????○	?????○	?????○	?????○	????○	?????○	????○	????○	?????○	????○	????○	???○
??????SS	??????A	??????A	?????A	?????A	????A	?????A	????A	????A	?????A	????A	????A	???A
													Stay trace	?????○	?????○	?????○	?????○	????○	?????○	????○	????○	?????○	????○	????○	???○
The light transmission	?????○	?????○	?????○	?????○	????○	?????○	????○	????○	?????○	????○	????○	???○
													Hardness	?????○	?????○	?????○	?????○	????○	?????○	????○	????○	?????○	????○	????×	???×
Cure shrinkage	?????○	?????○	?????○	?????○	????○	?????○	????○	????○	?????○	????○	????○	???○
													Warpage	?????○	?????○	?????○	?????○	????○	?????○	????○	????○	?????○	????○	????○	???○
Adhere to	?????○	?????○	?????○	?????○	????○	?????○	????○	????○	?????○	????○	????○	???○
													Curable	?????○	?????○	?????○	?????○	????○	?????○	????○	????○	?????○	????○	????○	???○

Table 4 comparative example evaluation result

Comparative example	????1	????2
			Viscosity	????300,000	????520
DB concentration	????1.6	????3.1
			????D1	????1.4996	????1.4633
????D2	????1.5156	????1.4848
			Fracture strength	????580	????120
Fracture elongation	????82	????11
			Elastic modulus	????2663	????3600
????σ2/σ1	????0.27	????0.3
			Yield point	????×	????×
??????SS	????B	????B
			Stay trace	????×	????×
The light transmission	????○	????○
			Hardness	????×	????×
Cure shrinkage	????○	????○
			Warpage	????○	????×
Adhere to	????○	????○
			Curable	????×	????×

Table 5 embodiment and comparative example evaluation result

	Embodiment 13	Embodiment 14	Comparative example 1	Comparative example 2
					From version	????○	????○	????×	????○
The initial stage outward appearance	????○	????○	????○	????△
					Boiling water cohesiveness	?100/100	?100/100	???80/100	???0/100
The boiling water outward appearance	????○	????○	?????×	?????○
					Quicken weather-proof cohesiveness	?100/100	??100/100	???70/100	???0/100

The effect of invention

The present invention can provide that case hardness and refractive index are high, the contraction distortion when not solidifying and solidify after distortion, stay the good used for optical part ionization ray solidified resin composite of trace, problem that weatherability is low; Use good optics and the area source of its solidfied material.

The simple declaration of accompanying drawing

Fig. 1 is expression tension stress (kg/cm ²) and the synoptic diagram of strain (%) relation (S-S curve).The longitudinal axis is represented tension stress (kg/cm ²), transverse axis is represented strain (%).(be family curve that can't see yield point.Family curve A)

Fig. 2 is expression tension stress (kg/cm ²) and the synoptic diagram of strain (%) relation (S-S curve).The longitudinal axis is represented tension stress (kg/cm ²), transverse axis is represented strain (%).(be the family curve of seeing yield point.Family curve B)

Fig. 3 is expression tension stress (kg/cm ²) and the synoptic diagram of strain (%) relation (S-S curve).The longitudinal axis is represented tension stress (g/cm ²), mold shaft is represented stress (%).(be family curve that can't see yield point.Family curve A)

Fig. 4 is an example figure of the method for continuous production of expression lens array sheet of the present invention.

Fig. 5 is the example figure that schematically represents lens array sheet of the present invention.

Fig. 6 is the example figure that schematically represents lens array sheet of the present invention.

Fig. 7 is the example figure that schematically represents lens array sheet of the present invention.

Fig. 8 is the example figure that schematically represents lens array sheet of the present invention.

Fig. 9 is the example figure that schematically represents lens array sheet of the present invention.

Figure 10 is the example figure that schematically represents lens array sheet of the present invention.

Figure 11 is an example figure of expression area source of the present invention.

Figure 12 is an example figure of expression area source of the present invention.

Figure 13 is the tension stress (kg/cm of the resin combination solidfied material that obtains of embodiment 1 ²) and the graph of a relation of strain (%).

Figure 14 is the tension stress (kg/cm of the resin combination solidfied material that obtains of embodiment 6 ²) and the graph of a relation of strain (%).

Figure 15 is the tension stress (kg/cm of the resin combination solidfied material that obtains of embodiment 11 ²) and the graph of a relation of strain (%).

Figure 16 is the tension stress (kg/cm of the resin combination solidfied material that obtains of comparative example 1 ²) and the graph of a relation of strain (%).

The explanation of symbol

1 roller intaglio plate

2 recesses

3 uncured ionization ray solidified resin composite A

The ionization ray solidified resin composite (A) that 3a solidifies

4 matrix material sheets (C)

5 compression rollers

6 conveying rollers

7 solidification equipments

8 conveying rollers

9 lens array sheets

10 T model nozzles

11 drying devices

12 liquid stream

The P repetition period

The β drift angle

41 unit lenses

51 light conductors

52 light sources

53 reflection layers

54 lampshades

60 transmissive liquid crystal display plates

100 area sources

200 liquid crystal indicators (LCD)

Claims (8)

1. the used for optical part ionization ray solidified resin composite is characterized in that, in tension stress and strain stress relation figure, solidfied material does not have yield point.

2. the described used for optical part ionization ray solidified resin composite of claim 1, it is characterized in that, by having epoxy acrylate acrylate-based more than two (a) and having the monofunctional acrylate (b) of ring texture to form of ring texture arranged, acrylate-functional groups is 0.2-5.0mmol/g.

3. the described used for optical part ionization ray solidified resin composite of claim 2, it is characterized in that the epoxy acrylate that the epoxy resin of more than one that have that having of ring texture select bisphenol f type epoxy resin, bisphenol-A epoxy resin and their potpourri that epoxy acrylate acrylate-based more than two (a) is the bisphenol A type epoxy resin that replaces from bisphenol A type epoxy resin, bisphenol f type epoxy resin, part halogen, the part halogen replaces obtains with the reaction of (methyl) acrylic acid.

4. claim 2 or 3 described used for optical part ionization ray solidified resin composites; it is characterized in that; the monofunctional acrylate (b) that ring texture is arranged is from (methyl) isobornyl acrylate; glycidyl cyclic carbonate ester (methyl) acrylate; (methyl) tetrahydrofurfuryl acrylate; 2-hydroxyl-3-phenoxy group-propyl group (methyl) acrylate; 2-phenyl-2-(4-acryloyl group hydroxyphenyl) propane; 2-phenyl-2-(4-acryloyl group hydroxy alkoxy base phenyl) propane; 2; 4-6-tribromo phenyl acrylate; 2; 4, the monofunctional acrylate of more than one that select in 6-tribromo phenyl alkoxy acrylic ester and their potpourri.

5. the optics that constitutes by the solidfied material of the described used for optical part ionization ray solidified resin composite of each claim among the claim 1-4.

6. the optics that constitutes of the solidfied material layer (A) of the ionization ray solidified resin composite that forms by the described used for optical part ionization ray solidified resin composite of each claim among the claim 1-4 and sheet transparent resin layer (C).

7. the optics that constitutes of the solidfied material layer (A) of the ionization ray solidified resin composite that forms by the described used for optical part ionization ray solidified resin composite of each claim among the claim 1-4, adhesive layer (B) and sheet transparent resin layer (C).

8. area source, it by the dull and stereotyped light conductor of forming of light transmission, in the side end face of this light conductor one with the light source cell that is provided with above, at the reflection layer of this light body the inside setting be layered in that the described optics of each claim constitutes among the claim 5-7 on the light emergence face on this light conductor surface.

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