CN102532423A - Composition for anisotropy light diffusion barrier and anisotropy light diffusion barrier - Google Patents

Composition for anisotropy light diffusion barrier and anisotropy light diffusion barrier Download PDF

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CN102532423A
CN102532423A CN201110411100XA CN201110411100A CN102532423A CN 102532423 A CN102532423 A CN 102532423A CN 201110411100X A CN201110411100X A CN 201110411100XA CN 201110411100 A CN201110411100 A CN 201110411100A CN 102532423 A CN102532423 A CN 102532423A
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composition
diffusion film
optical diffusion
anisotropy optical
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CN102532423B (en
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大类知生
草间健太郎
所司悟
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Lintec Corp
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0257—Diffusing elements; Afocal elements characterised by the diffusing properties creating an anisotropic diffusion characteristic, i.e. distributing output differently in two perpendicular axes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • C08L75/14—Polyurethanes having carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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    • G02B5/02—Diffusing elements; Afocal elements

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Abstract

The invention provides a composition for an anisotropy light diffusion barrier which can obtain excellent incident angle dependence amid optical transmission and diffusion and have wide optical diffusion angle area, and an anisotropy light diffusion barrier which can be obtained via photocuring. The composition for the anisotropy light diffusion barrier comprises biphenyl compound indicated in the general formula (1) as component (A) and polymerism compound having weight-average molecular weight within the range of 3.000 to 20,000 as component (B). Relative to the component B of 100 parts by weight, the content of the component (A) is arranged with the range of 25 to 400 parts by weight.

Description

The anisotropy optical diffusion film is with compsn and anisotropy optical diffusion film
Technical field
The present invention relates to the anisotropy optical diffusion film with compsn and anisotropy optical diffusion film.
Be particularly related to can obtain light see through and diffusion in have a wide anisotropy optical diffusion film in good incident angle dependency and light diffusion incident angle zone the anisotropy optical diffusion film with compsn and anisotropy optical diffusion film that its photocuring is formed.
Background technology
In the past, in liquid crystal indicator, can utilize from being located at light that the inner light source (internal light source) of device penetrates and know and recognize given image.
But, in recent years,, increase in the outdoor chance of liquid crystal display picture of watching along with popularizing of portable phone, in-car TV etc., thus produce accompany with it, be defeated by ambient light and be difficult to know the problem of recognizing given picture from the light intensity of internal light source.
In addition, in mobile purposes such as portable phone,, therefore under a large amount of situation of using internal light sources, can produce the problem that shortens in cruise duration of battery because the power consumption of the internal light source of liquid crystal indicator accounts for very big ratio with respect to total power consumption.
So,, develop the reflection-type liquid-crystal display device that ambient light is utilized as the part of light source in order to address these problems.
If this reflection-type liquid-crystal display device, then because with the part utilization of ambient light as light source, so ambient light is strong more, then can know the image of recognizing distinctness more, and for the power consumption of internal light source, also can suppress effectively.
In addition; In this kind reflection-type liquid-crystal display device;, ambient light imports the inside of liquid crystal indicator for being seen through effectively; And the part of this ambient light as light source effectively utilized, proposed the scheme (for example patent documentation 1) that equipment is used for carrying out effectively the anisotropy optical diffusion film of light diffusion.
If more specifically describe; Then in patent documentation 1; Shown in Figure 10 (a)～(b), disclose have in clamping between upper substrate 1103 and the hypocoxa 1107 liquid crystal cells of liquid crystal layer 1105 is arranged, be located at the light reflecting board 1110 of hypocoxa 1107 sides and be located at liquid crystal layer 1105 and light reflecting board 1110 between the liquid-crystal apparatus (1112) of Opital control board (anisotropy optical diffusion film) 1108.
In addition; Be provided with and be used for optionally making with the scattering of light of given angle incident and make Opital control board 1108 with the angle incident light transmission beyond the given angle; This Opital control board 1108 is disposed in the liquid crystal cells in such a way; That is, with scattering optionally with given angle incident direction of light project to Opital control board 1108 the surface and scattering direction of principal axis 1121 be the orientation of 6 o'clock direction haply in the liquid crystal cells face.
In addition; As anisotropy optical diffusion film used in the reflection-type liquid-crystal display device; Known have variety of way, yet the anisotropy optical diffusion film that especially possesses following shutter is used (for example patent documentation 2～4) widely, promptly; Through on the face direction with elongated tabular high-refractive-index regions, with elongated tabular region of low refractive index configured in parallel alternately, and can be at film inner control light direction, regulate light dispersion property.
Promptly; In the patent documentation 2, disclose a kind of light control film, this light control film is from the specific direction irradiation ultraviolet radiation to the membranaceous compsn that contains multiple compound with polymerizability carbon-to-carbon double bond; Said composition is solidified and; Only the incident light of scattering special angle scope (anisotropy optical diffusion film) optionally is characterized in that at least a kind of contained compound is the compound that has a plurality of aromatic nucleus and 1 polymerizability carbon-to-carbon double bond at intramolecularly in the said composition.
In addition; In the patent documentation 3; A kind of Photocurable composition is disclosed; It is characterized in that, contain fluorenes based compound (A), specific refractory power cationically polymerizable compound (B) and the light cationic polymerization initiators (C) different that has the carbon-to-carbon double bond of polymerizability at intramolecularly, and disclose the light control film that makes it to solidify and get with this fluorenes based compound (A).
In addition; In the patent documentation 4; Disclose a kind of anisotropy optical diffusion film and used compsn; It comprises (A) at least and in structural unit, contains Photoepolymerizationinitiater initiater, (E) that the free-radical polymerised compound of having of at least 1 above ethylenic unsaturated link(age), (D) utilize the chemoluminescence line to produce the radical seed with the bisphenol A type epoxy resin of general formula (7) expression or brominated bisphenol a type epoxy resin, (B) and utilize the thermal polymerization of thermogenesis positively charged ion seed, and discloses the anisotropy optical diffusion film that uses its to make.More particularly; Disclose a kind of anisotropy optical diffusion film and used compsn; It is characterized in that; At normal temperatures, (B) have refractive index ratio (A) bisphenol A type epoxy resin or the brominated bisphenol a type epoxy resin of free-radical polymerised compound and (C) to have a compound of at least one cationically polymerizable group at intramolecularly low, and disclose the anisotropy optical diffusion film that uses its to make.
[changing 1]
Figure BDA0000118714080000031
In the general formula (7), R representes Wasserstoffatoms or bromine atoms, and repeat number p representes natural number.
Patent documentation
Patent documentation No. 3480260 communiques of 1 Japanese Patent (claims)
Patent documentation 2 TOHKEMY 2006-350290 communiques (claims)
Patent documentation 3 TOHKEMY 2008-239757 communiques (claims)
Patent documentation No. 3829601 communiques of 4 Japanese Patents (claims)
But; Disclosed anisotropy optical diffusion film not only lacks the incident angle dependency in seeing through of light and the diffusion in the patent documentation 1～4; And light diffusion incident angle zone is also very narrow, therefore in reflection-type liquid-crystal display device, is difficult to effectively utilize ambient light.
In addition, though attempted a plurality of anisotropy optical diffusion films range upon range of, widening the width in light diffusion incident angle zone, however the boldness of image reduce or iridescent (Moire fringe phenomenon) occurs, in addition, also show disadvantageous economically problem.
Summary of the invention
So; The inventor etc. are in view of aforesaid situation; Carried out deep effort research, the result finds, through being to carry out photocuring after the polymerizable compound of the value in the given scope cooperates with given ratio in the biphenol compound that will have specific structure and weight-average molecular weight; Just can obtain having the dependent anisotropy optical diffusion film of good incident angle, thereby accomplish the present invention.
Promptly; The objective of the invention is to, provide can obtain light see through and diffusion in have a wide anisotropy optical diffusion film in good incident angle dependency and light diffusion incident angle zone the anisotropy optical diffusion film with compsn and with its photocuring and the anisotropy optical diffusion film that gets.
According to the present invention, provide a kind of anisotropy optical diffusion film to use compsn, it contains is 3 as (A) composition with the biphenol compound of formula (1) expression with as the weight-average molecular weight of (B) composition; 000～20; The polymerizable compound of the value in 000 the scope is characterized in that, with respect to (B) composition 100 weight parts; The content of (A) composition is made as the value in the scope of 25～400 weight parts, can solves the above problems.
[changing 2]
Figure BDA0000118714080000041
In the general formula (1), R 1～R 10Independent separately, R 1～R 10At least one be substituting group with formula (2) expression, remaining is any substituting group of Wasserstoffatoms, hydroxyl, carboxyl, alkyl, alkoxyl group, halogenated alkyl, hydroxyalkyl, carboxyalkyl and halogen atom.
[changing 3]
In the general formula (2), R 11Be Wasserstoffatoms or methyl, carbon number n is 1～4 integer, and repeat number m is 1～10 integer.
That is, can infer, because as (A) composition; Contain biphenol compound with specific structure; And the weight-average molecular weight of (B) composition is made as the value in the given scope, therefore will aspect the polymerization velocity (for example optical free radical polymerization velocity) of each composition, produces given difference, with (A) composition and (B) intermiscibility of composition be reduced to given scope; Thereby suppress copolymerization equably between the twenty percent branch, reduce the copolymerization property between the twenty percent branch.
Like this; When making it photocuring; (A) cured article of composition and (B) cured article of composition alternately extended configuration, can be effectively formed on the face direction shutter that elongated tabular high-refractive-index regions of alternately parallel configuration and elongated tabular region of low refractive index form.
So, if anisotropy optical diffusion film of the present invention is used compsn, then can obtain light see through and diffusion in have the wide anisotropy optical diffusion film of good incident angle dependency and light diffusion incident angle zone.
And, the x-y in-plane when said among the present invention " face direction " is meant film thickness direction is made as the z axle.
In addition, among the present invention, so-called " light diffusion incident angle zone " is meant under situation about changing with respect to the anisotropy optical diffusion film from the angle of the incident light of pointolite the angular range of the incident light corresponding with penetrating diffusion light.For the details in this light diffusion incident angle zone, will narrate in the back.
In addition, so-called " good incident angle dependency ", the incident angle zone with respect to film (light diffusion incident angle zone) that is meant the light diffusion that produces incident light gets very clear with the difference Be Controlled that does not produce between other incident angle zones that light spreads.
In addition, the meaning for " anisotropy " of the present invention also is to narrate in the back.
In addition, when constituting anisotropy optical diffusion film of the present invention and use compsn, preferably in general formula (1), R 2～R 9Any one be substituting group with general formula (2) expression.
Through formation like this, just can prevent effectively orientation to take place and crystallization between (A) composition in the stage before making it photocuring.Like this, in the stage of photocuring, can realize (A) composition and (B) the fine level of composition cohesion, be separated, thereby can more effectively obtain to possess the anisotropy optical diffusion film of given shutter.
In addition, when constituting anisotropy optical diffusion film of the present invention and use compsn, preferably the weight-average molecular weight of (A) composition is made as 200～2,500 the interior value of scope.
Through formation like this, just can more effectively reduce the copolymerization property of two compositions, thereby can more effectively obtain to have the anisotropy optical diffusion film of given shutter.
In addition, when constituting anisotropy optical diffusion film of the present invention and use compsn, preferably the specific refractory power of (A) composition is made as 1.5～1.65 the interior value of scope.
Through formation like this; The specific refractory power of the plate like region that just can more easily regulate deriving from the shutter (A) composition and the plate like region that derives from (B) composition poor, thus can more effectively obtain to possess the anisotropy optical diffusion film of given shutter.
And the specific refractory power of said here (A) composition is meant the specific refractory power of utilizing (A) composition before rayed is solidified.
In addition, when formation anisotropy optical diffusion film of the present invention was used compsn, preferred (B) composition was carbamate (methyl) propenoate.
Through formation like this; Not only can more easily regulate specific refractory power poor of specific refractory power and the plate like region that derives from (B) composition of the plate like region of deriving from the shutter (A) composition; And can suppress to derive from the fluctuation of specific refractory power of the plate like region of (B) composition effectively, thereby can more effectively obtain to have the anisotropy optical diffusion film of given shutter.
In addition, when constituting anisotropy optical diffusion film of the present invention and use compsn, preferably the specific refractory power of (B) composition is made as 1.4～1.5 the interior value of scope.
Through formation like this; The specific refractory power of the plate like region that just can more easily regulate deriving from the shutter (A) composition and the plate like region that derives from (B) composition poor, thus can more effectively obtain to possess the anisotropy optical diffusion film of given shutter.
And the specific refractory power of said here (B) composition is meant the specific refractory power of utilizing (B) composition before rayed is solidified.
In addition, when constituting anisotropy optical diffusion film of the present invention and use compsn, preferably with the specific refractory power of above-mentioned (A) composition and (B) difference of the specific refractory power of composition be made as the value more than 0.01.
Through formation like this, just can obtain light see through and diffusion in have the wideer anisotropy optical diffusion film of more good incident angle dependency and light diffusion incident angle zone.
And, said here (A) composition and (B) specific refractory power of composition be meant (A) composition and (B) specific refractory power of composition before utilizing rayed to solidify.
In addition, preferably, contain Photoepolymerizationinitiater initiater, and with respect to (A) composition and (B) the total amount of composition (100 weight %), its content is made as the value in the scope of 0.2～20 weight % as (C) of the present invention composition.
Through formation like this, when the anisotropy optical diffusion film is shone active energy beam with compsn, can form given shutter effectively.
In addition; Other form of the present invention is a kind of anisotropy optical diffusion film; It is characterized in that through the anisotropy optical diffusion film is formed with compsn irradiation active energy beam, and it is 3 as (A) composition with the biphenol compound of formula (1) expression with as the weight-average molecular weight of (B) composition that the anisotropy optical diffusion film contains with compsn; 000～20; The polymerizable compound of the value in 000 the scope, and, the content of (A) composition is made as the interior value of scope of 25～400 weight parts with respect to (B) composition 100 weight parts.
[changing 4]
In the general formula (1), R 1～R 10Independent separately, R 1～R 10At least one be substituting group with formula (2) expression, remaining is any substituting group of Wasserstoffatoms, hydroxyl, carboxyl, alkyl, alkoxyl group, halogenated alkyl, hydroxyalkyl, carboxyalkyl and halogen atom.
[changing 5]
Figure BDA0000118714080000071
In the general formula (2), R 11Be Wasserstoffatoms or methyl, carbon number n is 1～4 integer, and repeat number m is 1～10 integer.
Promptly; If anisotropy optical diffusion film of the present invention; Then owing to be that given anisotropy optical diffusion film is formed with the compsn photocuring, therefore can be formed on light see through and diffusion in have good incident angle dependency and the regional wide anisotropy optical diffusion film of light diffusion incident angle.
In addition, when constituting anisotropy optical diffusion film of the present invention, preferably thickness is made as the value in the scope of 100～500 μ m.
Through formation like this; Even when range upon range of and direct state with individual layer is not applied in reflection-type liquid-crystal display device etc. with the anisotropy optical diffusion film; Also can be effectively with ambient light as the light source utilization, and can prevent that the boldness of institute's images displayed from reducing or occurring the generation of the problem of iridescent.
Description of drawings
Fig. 1 (a)～(b) is the figure of summary situation that is used to explain the shutter of anisotropy optical diffusion film.
Fig. 2 is incident angle dependency and the anisotropic figure that is used to explain the anisotropy optical diffusion film.
Fig. 3 (a)～(b) is the dependent figure of incident angle that is used to explain the anisotropy optical diffusion film.
Fig. 4 (a)～(c) is the figure that is used to explain the opening angle of input angle and diffusion light.
Fig. 5 (a)～(c) is the synoptic diagram that is used to explain the method for manufacture of anisotropy optical diffusion film.
Fig. 6 (a)～(b) is the figure that is used to explain the photocuring operation.
Fig. 7 (a)～(c) is the figure of form that is used to explain the shutter of anisotropy optical diffusion film of the present invention.
Fig. 8 is the figure of application examples that is used for explaining the anisotropy optical diffusion film of the present invention of reflection-type liquid-crystal display device.
Fig. 9 is the figure with respect to the relation of the opening angle of the input angle of anisotropy optical diffusion film and diffusion light of expression embodiment 1,3 and 4.
Figure 10 (a)～(b) is the figure that is used to explain the reflection-type liquid-crystal display device that has used anisotropy optical diffusion film in the past.
Wherein, 1: coating layer, 2: engineering sheet, 10: anisotropy optical diffusion film, 12: the higher plate like region of specific refractory power that derives from (A) composition; 14: derive from the lower plate like region of specific refractory power of (B) composition, 20: UV irradiation equipment, 21: infrared intercepting filter, 22: cold mirror, 23: tinted shade; 25: the UV-lamp of wire, 50 (52,54,56): incident light (active energy beam), 100: reflection-type liquid-crystal display device, 101: polaroid; 102: polarizer, 103: light diffusing sheet, 104: sheet glass, 105: filter; 106: liquid crystal, 107: mirror reflective plate, 108: sheet glass, 110: liquid crystal cells
Embodiment
[first embodiment]
First embodiment of the present invention is that a kind of anisotropy optical diffusion film is used compsn; It contains is 3 as (A) composition with the biphenol compound of general formula (1) expression with as the weight-average molecular weight of (B) composition; The polymerizable compound of the value in 000～20,000 the scope is characterized in that; With respect to (B) composition 100 weight parts, the content of (A) composition is made as the interior value of scope of 25～400 weight parts.
Below, suitably with reference to accompanying drawing, first embodiment of the present invention is specified.
1. the ultimate principle of anisotropy optical diffusion film
The initial accompanying drawing that uses earlier (is designated hereinafter simply as the anisotropy optical diffusion film to the anisotropy optical diffusion film that anisotropy optical diffusion film of the present invention is got with the compsn photocuring.) ultimate principle describe.
At first; Among Fig. 1 (a); Express the top view (vertical view) of anisotropy optical diffusion film 10; Among Fig. 1 (b), the anisotropy optical diffusion film 10 shown in Fig. 1 (a) is cut along dotted line A-A in vertical direction, express the sectional view of the anisotropy optical diffusion film 10 when the direction of arrow is watched facet attentively.
Shown in the vertical view of this Fig. 1 (a), anisotropy optical diffusion film 10 possesses the plate like region 12 of the linear that the specific refractory power that derives from (A) composition is higher relatively on the face direction, plate like region 14 shutter 13 of configured in parallel alternately of relatively low linear with deriving from the specific refractory power of (B) composition.
In addition; Shown in the sectional view of Fig. 1 (b); The plate like region 12 that derives from the high refractive index of (A) composition has given thickness respectively with the plate like region 14 that derives from the low-refraction of (B) composition, on the vertical direction of anisotropy optical diffusion film 10, is also keeping the alternately state of configured in parallel.
Can infer thus, under the situation of input angle as shown in Figure 2 in light diffusion incident angle zone, incident light can be by 10 diffusions of anisotropy optical diffusion film.
Promptly; Can infer, shown in Fig. 1 (b), be that interface 13 ' with shutter 13 is in fact near the angle in the parallel given scope in the input angle with respect to the incident light of anisotropy optical diffusion film 10; Under the situation of the angle in the incident angle of the light diffusion just zone; Because of incident light (52,54) when changing direction, in the plate like region 12 of the high refractive index of film thickness direction in shutter, walk, and make the direct of travel of light of exiting surface side different.
Consequently, can infer, under the situation of input angle in light diffusion incident angle zone, incident light can be by 10 diffusions (52 ', 54 ') of anisotropy optical diffusion film.
And light diffusion incident angle zone is the angular regions that is determined along with this anisotropy optical diffusion film by the refringence of the shutter in the anisotropy optical diffusion film, pitch angle etc.
In addition; Incident direction of light in the plate like region 12 of the high refractive index in the shutter changes; Utilize the refractive index gradient in the plate like region 12 of high refractive index; Except utilizing total reflection as shown in Figure 1 situation, it is also conceivable that the situation of the graded index type that changes with the curve-like direction of travel with the step index type of ground direction of travel variation as the linearity sawtooth.
On the other hand, break away from the input angle with respect to the incident light of anisotropy optical diffusion film 10 under the situation in light diffusion incident angle zone, can infer, incident light 56 can be by 10 diffusions of anisotropy optical diffusion film, but former state sees through (56 ') unchangeably.
Utilize above mechanism, the anisotropy optical diffusion film 10 that possesses shutter (12,14) for example can be as shown in Figure 2, light see through and diffusion in performance incident angle dependency.
In addition, as shown in Figure 2, the anisotropy optical diffusion film that possesses shutter even its input angle is not simultaneously, also can carry out roughly the same light diffusion in the exiting surface side under the situation of input angle in light diffusion incident angle zone of incident light.
So we can say, the anisotropy optical diffusion film that possesses shutter also has the optically focused effect that light is concentrated on given position.
And; Said among the present invention " anisotropy " is meant following character; Promptly; For example utilize the light that is spread (52 ', 54 ') of Fig. 2 under the situation of film with the light diffusion resembling, the diffusion (shape of the broadening of diffusion light) of this light with in the parallel face of film of the emergent light that has spread is different along with the direction in the identical faces.
More particularly; Under the situation of anisotropy optical diffusion film 10 of the present invention; Mainly in the face parallel of the emergent light that has spread with film; The vertical direction of direction at the shutter that extends with direction in the face of film 10 spreads light, the broadening of diffusion light be shaped as sub-elliptical shape (52 ', 54 ').
In addition, use Fig. 3 (a), to describing with respect to the input angle of the incident light of anisotropy optical diffusion film relation with the opening angle of the diffusion light that has spread by the anisotropy optical diffusion film.
That is, among Fig. 3 (a), express the input angle in transverse axis, taked with respect to the incident light of anisotropy optical diffusion film (°), the opening angle of the diffusion light in the longitudinal axis, taking to have spread by the anisotropy optical diffusion film (°) rational curve that forms.
And, shown in Fig. 4 (a)～(c), so-called input angle θ 1 be meant angle when vertically the incident angle is made as 0 ° with respect to anisotropy optical diffusion film 10 (°).
More particularly; As stated; Since participate in the composition of the incident light of anisotropic light diffusion and mainly be with the shutter that extends along the face direction towards vertical composition; Therefore mention in the present invention under the situation of " input angle θ 1 " of incident light, be meant input angle towards vertical composition with the shutter that extends along the face direction.In addition, at this moment, the angle when input angle θ 1 is meant the angle with respect to the light incident side normal to a surface of anisotropy optical diffusion film is made as 0 ° (°).
In addition, the opening angle θ 2 of so-called diffusion light, as the opening angle that is meant diffusion light shown in literal (°).
In addition, the opening angle of diffusion light is big more, means that then the input angle incident light with this moment is spread by the anisotropy optical diffusion film effectively.
On the contrary, the opening angle of diffusion light is more little, means that then the input angle incident light former state with this moment sees through anisotropy optical diffusion film, not diffusion unchangeably.
For the concrete measuring method of the opening angle of this diffusion light, put down in writing in an embodiment.
From this rational curve, be appreciated that if the anisotropy optical diffusion film, then because of the difference of input angle, light see through and the degree of diffusion has a great difference, can light be spread the incident angle zone and very clearly separate with its incident angle zone in addition.
On the other hand, under the situation that does not have the dependent film of incident angle, shown in Fig. 3 (b), the variation of input angle can not cause clear and definite influence to the degree that sees through and spread of light, can't assert light diffusion incident angle zone.
And; Purpose among the present invention is, the anisotropy optical diffusion film that obtains the regional wide anisotropy optical diffusion film of the very clear and light diffusion incident angle of the difference in as Fig. 3 (a) shown in such light diffusion incident angle zone and incident angle zone beyond it and can obtain this film is used compsn.
2. (A) composition: biphenol compound
(1) kind
Anisotropy optical diffusion film of the present invention is characterised in that with compsn, as (A) composition, comprises the biphenol compound with formula (1) expression.
[changing 6]
Figure BDA0000118714080000111
In the general formula (1), R 1～R 10Independent separately, R 1～R 10At least one be substituting group with formula (2) expression, remaining is any substituting group of Wasserstoffatoms, hydroxyl, carboxyl, alkyl, alkoxyl group, halogenated alkyl, hydroxyalkyl, carboxyalkyl and halogen atom.
[changing 7]
Figure BDA0000118714080000112
In the general formula (2), R 11Be Wasserstoffatoms or methyl, carbon number n is 1～4 integer, and repeat number m is 1～10 integer.
For its reason; Can infer be because; Through comprising biphenol compound with specific structure as (A) composition; Will make the polymerization velocity of (A) composition faster, produce given difference aspect the polymerization velocity between these compositions, thereby can reduce the copolymerization property of two compositions effectively than the polymerization velocity of (B) composition.
Consequently, when making it photocuring, can form the plate like region that will derive from (A) composition effectively and derive from the so-called shutter that the plate like region of (B) composition is alternately extended.
In addition, can infer,, can the intermiscibility with (B) composition be reduced to given scope, thereby can more effectively form shutter through comprising biphenol compound with specific structure as (A) composition.
In addition; Through comprising biphenol compound with specific structure as (A) composition; Just can improve the specific refractory power of the plate like region of deriving from the shutter (A) composition, will be adjusted to the above value of SP with the difference of the specific refractory power of the plate like region that derives from (B) composition.
So; Through comprising biphenol compound with specific structure as (A) composition; Just can with after the characteristic of (B) composition of stating combine, obtain to possess the anisotropy optical diffusion film of the shutter that the plate like region that specific refractory power is different alternately extends effectively.
Like this, just can obtain light see through and diffusion in have the wide anisotropy optical diffusion film of good incident angle dependency and light diffusion incident angle zone.
In addition, the R in general formula (1) 1～R 10Comprise under any one situation of alkyl, alkoxyl group, halogenated alkyl, hydroxyalkyl and carboxyalkyl, preferably the carbon number of its moieties is made as the value in 1～4 the scope.
Its reason be because; If this carbon number is to surpass 4 value; Then the polymerization velocity of (A) composition reduce or shutter in the specific refractory power of the plate like region that derives from (A) composition became low, thereby have the situation of the given shutter that is difficult to form effectively the anisotropy optical diffusion film.
So, the R in general formula (1) 1～R 10Comprise under any one situation of alkyl, alkoxyl group, halogenated alkyl, hydroxyalkyl and carboxyalkyl, more preferably the carbon number of its moieties is made as the value in 1～3 the scope, further preferably be made as the value in 1～2 the scope.
In addition, the R in the preferred formula (1) 1～R 10In the middle of selected substituting group be the substituting group beyond halogenated alkyl or the halogen atom, that is, be the substituting group that does not comprise halogen.
Its reason be because, the anisotropy optical diffusion film is being burned when waiting, thus from preventing that the viewpoint that produces dioxin protection environment from considering preferably.
And, in the anisotropy optical diffusion film that possesses shutter in the past, when obtaining given shutter,, in general in monomer component, carry out halogen and replace from the purpose that makes the monomer component high refractive indexization.
In this, if with the biphenol compound of general formula (1) expression, even then do not carrying out also can being made as high refractive index under the substituted situation of halogen.
So, if the anisotropy optical diffusion film that anisotropy optical diffusion film of the present invention is formed with the compsn photocuring,, also can bring into play good incident angle dependency even then under the situation that does not comprise halogen.
In addition, the R in the preferred formula (1) 2～R 9Any one be substituting group with general formula (2) expression.
Its reason be because, through being made as the R in the cyclohexyl biphenyl with the substituent position of general formula (2) expression 1And R 10Position in addition then the stage before making it photocuring, can prevent orientation to take place and crystallization between (A) composition effectively.
Like this, in the stage of photocuring, just can realize (A) composition and (B) the fine level of composition cohesion, be separated, thereby can more effectively obtain to possess the anisotropy optical diffusion film of given shutter.
In addition, based on identical viewpoint, the R in the special preferred formula (1) 3, R 5, R 6And R 8Any one be substituting group with general formula (2) expression.
In addition, as a rule will be made as 1～10 integer with the repeat number m in the substituting group of general formula (2) expression.
Its reason is because if repeat number m surpasses 10 value, the alkylidene oxide chain that then links polymerization position and cyclohexyl biphenyl will become long, thereby has the polymeric situation between (A) composition that hinders the polymerization position.
So, more preferably will be made as 1～4 integer with the repeat number m in the substituting group of general formula (2) expression, especially preferably be made as 1～2 integer.
And, based on identical viewpoint, as a rule will be made as 1～4 integer with the carbon number n in the substituting group of general formula (2) expression.
In addition; If it is also consider following situation, that is, too approaching as the position and the cyclohexyl biphenyl of the polymerizability carbon-to-carbon double bond at polymerization position; Cyclohexyl biphenyl will become editsteric hindrance; Reduce the polymerization velocity of (A) composition, then more preferably will be made as 2～4 integer, especially preferably be made as 2～3 integer with the carbon number n in the substituting group of general formula (2) expression.
In addition, as the concrete example of the biphenol compound of representing with general formula (1), can preferably enumerate compound with following formula (3)～(4) expression.
[changing 8]
[changing 9]
Figure BDA0000118714080000142
(2) weight-average molecular weight
In addition, preferably will be made as 200～2 as the weight-average molecular weight of the biphenol compound with specific structure of (A) composition, the value in 500 the scope.
For its reason; Can infer be because; Through will as the weight-average molecular weight of the biphenol compound with specific structure of (A) composition and after the weight-average molecular weight of polymerizable compound of conduct (B) composition stated be made as given scope respectively, just can more effectively reduce the copolymerization property of two compositions.
Consequently, when making it photocuring, can more effectively form the plate like region that will derive from (A) composition and derive from the shutter that the plate like region of (B) composition is alternately extended.
Promptly; Can infer be because; If (A) weight-average molecular weight of composition is the value less than 200, then the position of the position of cyclohexyl biphenyl and polymerizability carbon-to-carbon double bond will become near, because of editsteric hindrance reduces polymerization velocity; Near the polymerization velocity of (B) composition, be easy to produce and (B) situation of the copolymerization of composition thereby have.On the other hand, if (A) weight-average molecular weight of composition is to surpass 2,500 value; Then the difference with the molecular weight of (B) composition diminishes; (A) polymerization velocity of composition reduces, and near the polymerization velocity of (B) composition, thereby is easy to produce and (B) copolymerization of composition; Consequently, have the situation that is difficult to form effectively shutter.
So, more preferably will be made as 240～1 as the weight-average molecular weight of the biphenol compound with specific structure of (A) composition, the value in 500 the scope further is preferably and is made as 260～1, the value in 000 the scope.
And (A) weight-average molecular weight of composition can be according to being obtained by the calculated value that the nucleidic mass with constituting atom obtains of forming of molecule.
In addition, (A) weight-average molecular weight of composition can also use gel permeation chromatography (GPC) to measure.
In addition, though (A) composition also can with molecular structure or weight-average molecular weight different more than 2 kinds and usefulness, yet the viewpoint of the fluctuation of the specific refractory power of the plate like region that derives from (A) composition from suppress shutter consider, preferably only use a kind.
Promptly; Under the low situation of the intermiscibility with (B) composition of (A) composition; Be under the situation such as halogen based compound for example at (A) composition, sometimes as the 3rd composition that is used to make (A) composition and (B) composition to mix, and with other (A) composition (for example non-halogen based compound etc.).
But, under this situation,, have the situation that the specific refractory power in the high plate like region of the specific refractory power that derives from (A) composition fluctuates, is easy to reduce because of this ternary influence.
Consequently, have and derive from the situation that the refringence of the low plate like region of the specific refractory power of (B) composition becomes inhomogeneous or is easy to exceedingly reduce.
So, preferred select to have and (B) monomer component of the high refractive index of the intermiscibility of composition, it is used as independent (A) composition.
And, for example if as the biphenol compound with formula (3) expression of (A) composition,, therefore have and (B) intermiscibility of composition then because viscosity is low, use so can be used as independent (A) composition.
(3) specific refractory power
In addition, preferably will be made as value in 1.5～1.65 the scope as the specific refractory power of the biphenol compound with specific structure of (A) composition.
Its reason be because; Be made as the value in this scope through specific refractory power with (A) composition; Just can more easily regulate deriving from the shutter (A) composition plate like region, with specific refractory power poor of the plate like region that derives from (B) composition, thereby can more effectively obtain to possess the anisotropy optical diffusion film of given shutter.
Just because, if (A) specific refractory power of composition is the value less than 1.5, then will be too small with the difference of the specific refractory power of (B) composition, be difficult to obtain the dependent situation of required incident angle thereby have.On the other hand, if (A) specific refractory power of composition is to surpass 1.65 value, though become big with the difference of the specific refractory power of (B) composition, have and (B) situation of difficult that becomes that mixes of composition.
So, more preferably will be made as the value in 1.55～1.6 the scope as the specific refractory power of the biphenol compound with specific structure of (A) composition, further preferably be made as the value in 1.56～1.59 the scope.
And the specific refractory power of above-mentioned what is called (A) composition is meant the specific refractory power of utilizing rayed to solidify (A) composition before.
In addition, specific refractory power for example can be measured according to JIS K0062.
(4) content
In addition, it is characterized in that, with respect to after polymerizable compound 100 weight parts of conduct (B) composition stated, will be made as the value in the scope of 25～400 weight parts as the content of the biphenol compound with specific structure of (A) composition.
Its reason be because; Be made as the value in this scope through content with (A) composition; Just can keep and (B) blended while of composition, copolymerization takes place to prevent effectively that twenty percent divides when having carried out rayed, thereby can form given shutter effectively.
Just because; If (A) content of composition is the value less than 25 weight parts; Then (A) composition tails off with respect to the ratio that exists of (B) composition; The width of the plate like region of deriving from the shutter (A) composition is compared with the width of the plate like region that derives from (B) composition and is become too small, thereby has the situation that is difficult to obtain to have the good dependent shutter of incident angle.In addition, it is not enough that the length of the window shutter of the thickness direction of anisotropy optical diffusion film becomes, thereby have the situation that can not demonstrate light diffusing.On the other hand; If (A) content of composition is the value that surpasses 400 weight parts; Then (A) composition becomes many with respect to the ratio that exists of (B) composition; The width of the plate like region of deriving from the shutter (A) composition is compared with the width of the plate like region that derives from (B) composition and is become excessive, has the situation that is difficult to obtain to have the good dependent shutter of incident angle on the contrary.In addition, it is not enough that the length of the window shutter of the thickness direction of anisotropy optical diffusion film becomes, thereby have the situation that can not demonstrate light diffusing.
So; More preferably with respect to polymerizable compound 100 weight parts as (B) composition; To be made as the value in the scope of 40～300 weight parts as the content of the biphenol compound with specific structure of (A) composition, further preferably be made as the value in the scope of 50～200 weight parts.
3. (B) composition: polymerizable compound
(1) kind
Polymerizable compound as (B) composition can be cationically polymerizable, anionoid polymerization property and any one free-radical polymerised polymerizable compound; Yet owing to can utilize and the identical polymerization system of (A) composition; (C) composition of stating after can also be shared; Dispose easily, therefore preferably be made as free-radical polymerised polymerizable compound.
In addition; As this free-radical polymerised polymerizable compound; For example can enumerate carbamate (methyl) propenoate, in side chain, have (methyl) acrylic acid polymer of (methyl) acryl, the silicone resin that contains (methyl) acryl, unsaturated polyester resin etc., yet especially preferably be made as carbamate (methyl) propenoate.
Its reason be because; If carbamate (methyl) propenoate; Then not only can more easily regulate the plate like region of deriving from the shutter (A) composition specific refractory power, with specific refractory power poor of the plate like region that derives from (B) composition; But also can suppress to derive from the fluctuation of specific refractory power of the plate like region of (B) composition effectively, thereby can more effectively obtain to possess the anisotropy optical diffusion film of given shutter.
So, mainly carbamate (methyl) propenoate as (B) composition is described below.
And so-called (methyl) propenoate is meant propenoate and methacrylic ester both sides.
At first, carbamate (methyl) propenoate by (a) contain the compound, (b) polyalkylene glycol of at least 2 NCOs and (c) (methyl) vinylformic acid hydroxyalkyl acrylate form.
Wherein, For the compound that contains at least 2 NCOs as (a) composition; For example can enumerate 2; 4-tolylene diisocyanate, 2; 6-tolylene diisocyanate, 1; 3-XDI, 1, ester ring type POLYMETHYLENE POLYPHENYLISOCYANATE such as aliphatic polyisocyantes such as aromatic polyisocyanates such as 4-XDI, hexamethylene diisocyanate, isophorone diisocyanate (IPDI), hydrogenated diphenyl methane diisocyanate and their biuret body, tricarbimide body and conduct and terepthaloyl moietie, Ucar 35, NSC 6366, TriMethylolPropane(TMP), castor-oil plant wet goods contain the adducts (for example XDI is the trifunctional adducts) etc. of reactant of the compound of low molecular activity hydrogen.
In addition, in the middle of above-mentioned, be preferably the ester ring type POLYMETHYLENE POLYPHENYLISOCYANATE especially.
Its reason be because, if the ester ring type POLYMETHYLENE POLYPHENYLISOCYANATE then compares with aliphatic polyisocyante, because of relations such as three-dimensional coordination are being provided with difference aspect the speed of response of each NCO more easily.
Like this, just can suppress (a) composition only with (b) composition reaction or (a) composition only with the reaction of (c) composition, can make (a) composition and (b) composition and (c) composition reaction reliably, thereby can prevent unnecessary production of by-products.
Consequently, can suppress effectively deriving from the anisotropy optical diffusion film (B) composition plate like region, be the fluctuation of the specific refractory power in the plate like region of low-refraction.
In addition; If ester ring type POLYMETHYLENE POLYPHENYLISOCYANATE; Then compare with aromatic polyisocyanate; Can with gained be reduced to given scope as the polymerizable compound of (B) composition and intermiscibility as the biphenol compound with specific structure of (A) composition, thereby more effectively form shutter.
In addition; If ester ring type POLYMETHYLENE POLYPHENYLISOCYANATE; Then compare with aromatic polyisocyanate; Can reduce the specific refractory power of polymerizable compound of conduct (B) composition of gained, therefore can increase poor with as the specific refractory power of the biphenol compound with specific structure of (A) composition, thereby more effectively form the excellent shutter in anisotropy aspect.
In addition, in the middle of this kind ester ring type POLYMETHYLENE POLYPHENYLISOCYANATE, preferably only contain the ester ring type vulcabond of 2 NCOs.
Its reason is because if the ester ring type vulcabond then can reach (c) component quantifying ground reaction with (b) composition, obtain single (B) composition.
As this kind ester ring type vulcabond, can especially preferably enumerate isophorone diisocyanate (IPDI).
Its reason is because can aspect 2 NCOs reactive, effective difference be set.
In addition, in the middle of the composition that forms carbamate (methyl) propenoate,, for example can enumerate polyoxyethylene glycol, W 166, polytetramethylene glycol, gather pinakon etc., wherein be preferably W 166 especially as the polyalkylene glycol that belongs to (b) composition.
Its reason is because if W 166, then because viscosity is low, therefore solubilizing agent ground is not operated.
In addition also because, can improve the operability of anisotropy optical diffusion film or installation property effectively if W 166 then when (B) composition is solidified, can form the good compliant section of this cured article.
And (B) weight-average molecular weight of composition mainly can utilize the weight-average molecular weight of (b) composition to regulate.Here, (b) weight-average molecular weight of composition is 2,300～19,500 as a rule, is preferably 4,300～14,300, is preferably 6,300～12,300 especially.
In addition; In the middle of the composition that forms carbamate (methyl) propenoate; As (methyl) vinylformic acid hydroxyalkyl acrylate that belongs to (c) composition, for example can enumerate (methyl) vinylformic acid 2-hydroxy methacrylate, (methyl) vinylformic acid 2-hydroxy propyl ester, (methyl) vinylformic acid 3-hydroxy propyl ester, (methyl) vinylformic acid 2-hydroxyl butyl ester, (methyl) vinylformic acid 3-hydroxyl butyl ester, (methyl) vinylformic acid 4-hydroxyl butyl ester etc.
In addition; The viewpoint that from the polymerization velocity of carbamate (methyl) propenoate that reduces gained, more effectively forms given shutter is considered; Particularly methylacrylic acid hydroxyl alkyl ester more preferably further is preferably 2-hydroxyethyl methacrylate.
In addition, can implement according to well-established law according to the synthetic of carbamate (methyl) propenoate of (a)～(c) composition.
Preferably the cooperation ratio with (a)～(c) composition at this moment is made as (a) composition with molar ratio computing: (b) composition: (c) composition=1～5: 1: 1～5 ratio.
Its reason be because; Through being made as this cooperation ratio, can synthesize following carbamate (methyl) propenoate effectively, promptly; 2 hydroxyls that have for (b) composition; A side's who has with (a) composition respectively isocyanic ester radical reaction and combining, the opposing party's who has respectively for 2 (a) compositions in addition NCO then becomes the hydroxyl reaction that branch has and combines with (c).
So more preferably the cooperation ratio with (a)～(c) composition is made as (a) composition with molar ratio computing: (b) composition: (c) composition=1～3: 1: 1～3 ratio further preferably is made as 2: 1: 2 ratio.
(2) weight-average molecular weight
In addition, it is characterized in that, will be made as 3,000～20 as the weight-average molecular weight of the polymerizable compound of (B) composition, the value in 000 the scope.
Its reason be because, through will being made as given scope as the weight-average molecular weight of the polymerizable compound of (B) composition, will be at (A) composition and (B) produce given difference aspect the polymerization velocity of composition, thereby can reduce the copolymerization property of two compositions effectively.
Consequently, when making it photocuring, can form the plate like region that will derive from (A) composition effectively and derive from the shutter that the plate like region of (B) composition is alternately extended.
Just because, if (B) weight-average molecular weight of composition is the value less than 3,000; Then the polymerization velocity of (B) composition accelerates, and near the polymerization velocity of (A) composition, is easy to produce and (A) copolymerization of composition; Consequently, have the situation that is difficult to form effectively shutter.On the other hand; If (B) weight-average molecular weight of composition is to surpass 20; 000 value, then have be difficult to form will derive from (A) composition and (B) shutter that alternately extends of the plate like region of composition situation or exceedingly reduce with the intermiscibility of (A) composition the situation of separating out (A) composition in the coating stage.
So, more preferably will be made as 5,000～15 as the weight-average molecular weight of the polymerizable compound of (B) composition, the value in 000 the scope further preferably is made as the value in 7,000～13,000 the scope.
And (B) weight-average molecular weight of composition can use gel permeation chromatography (GPC) to measure.
In addition, though (B) composition also can and with molecular structure or weight-average molecular weight different more than 2 kinds, yet the viewpoint of the fluctuation of the specific refractory power of the plate like region that derives from (B) composition from suppress shutter consider, preferably only use a kind.
Just because; Under the situation of using multiple (B) composition; The specific refractory power that derives from the low plate like region of the specific refractory power of (B) composition fluctuates or uprises, the situation inhomogeneous or that exceedingly reduce thereby the refringence that has and derive from a high plate like region of the specific refractory power of (A) composition becomes.
(3) specific refractory power
In addition, preferably will be made as value in 1.4～1.5 the scope as the specific refractory power of the polymerizable compound of (B) composition.
Its reason be because; Be made as the value in this scope through specific refractory power with (B) composition; The plate like region of just regulating deriving from the shutter (A) composition more easily is poor with the specific refractory power of the plate like region that derives from (B) composition, thereby can more effectively obtain to possess the anisotropy optical diffusion film of given shutter.
Just because, if (B) specific refractory power of composition is the value less than 1.4, though become big with the difference of the specific refractory power of (A) composition, yet worsen terrifically with the intermiscibility of (A) composition, might can't form shutter.On the other hand, if (B) specific refractory power of composition is to surpass 1.5 value, then the difference with the specific refractory power of (A) composition becomes too small, is difficult to obtain the dependent situation of required incident angle thereby have.
So, more preferably will be made as the value in 1.45～1.49 the scope as the specific refractory power of the polymerizable compound of (B) composition, further be preferably the value in 1.46～1.48 the scope of being made as.
And the specific refractory power of above-mentioned what is called (B) composition is meant the specific refractory power of utilizing rayed to solidify (B) composition before.
In addition, specific refractory power for example can be measured according to JIS K0062.
In addition, preferably the specific refractory power of above-mentioned (A) composition and (B) difference of the specific refractory power of composition are made as the value more than 0.01.
Its reason be because, be made as the value in the given scope through difference with this specific refractory power, just can obtain light see through and diffusion in have more good incident angle dependency and light spreads the wideer anisotropy optical diffusion film in incident angle zone.
Therefore just because, then, have the situation that the opening angle of diffusion light becomes narrow because incident light narrows down in the angular regions of shutter inner total reflection if the difference of this specific refractory power is the value less than 0.01.On the other hand, if the difference of this specific refractory power is excessive value, then (A) composition will too worsen with (B) intermiscibility of composition, thereby might can't form shutter.
So, more preferably the specific refractory power of (A) composition and (B) difference of the specific refractory power of composition are made as the value in 0.05～0.5 the scope, further preferably be made as the value in 0.1～0.2 the scope.
And, said here (A) composition and (B) specific refractory power of composition be meant and utilize (A) composition and (B) specific refractory power of composition of rayed before solidifying.
(4) content
In addition, preferably with respect to the total amount 100 weight %s of anisotropy optical diffusion film, will be made as the value in the scope of 20～80 weight % as the content of the polymerizable compound of (B) composition with compsn.
Its reason be because; If (B) content of composition is the value less than 20 weight %; Then (B) composition tails off with respect to the ratio that exists of (A) composition; The width of the plate like region of deriving from the shutter (B) composition is compared with the width of the plate like region that derives from (A) composition and is become too small, thereby has the situation that is difficult to obtain to have the good dependent shutter of incident angle.In addition, the length of window shutter that has a thickness direction of the anisotropy optical diffusion film insufficient situation that becomes.On the other hand; If (B) content of composition is the value that surpasses 80 weight %; Then (B) composition becomes many with respect to the ratio that exists of (A) composition; The width of the plate like region of deriving from the shutter (B) composition is compared with the width of the plate like region that derives from (A) composition and is become excessive, has the situation that is difficult to obtain to have the good dependent shutter of incident angle on the contrary.In addition, the length of window shutter that has a thickness direction of the anisotropy optical diffusion film insufficient situation that becomes.
So, more preferably with respect to the total amount 100 weight %s of anisotropy optical diffusion film, will be made as the value in the scope of 30～70 weight % as the content of the polymerizable compound of (B) composition with compsn, further preferably be made as the value in the scope of 40～60 weight %.
4. Photoepolymerizationinitiater initiater
In addition, anisotropy optical diffusion film of the present invention with compsn in, preferably according to required, contain Photoepolymerizationinitiater initiater as (C) composition.
Its reason is because through containing Photoepolymerizationinitiater initiater, when the anisotropy optical diffusion film is shone active energy beam with compsn, can form given shutter effectively.
Here, so-called Photoepolymerizationinitiater initiater is meant that the irradiation that utilizes ultraviolet isoreactivity energy-ray produces the compound of radical seed.
As this Photoepolymerizationinitiater initiater; For example can enumerate bitter almond oil camphor, benzoin methylether, ethoxybenzoin, benzoin iso-propylether, benzoin n-butylether, bitter almond oil camphor ethyl isobutyl ether, methyl phenyl ketone, dimethylamino benzoylformaldoxime, 2; 2-dimethoxy-2-phenyl methyl phenyl ketone, 2; 2-diethoxy-2-phenyl methyl phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-acetone, 1-hydroxycyclohexylphenylketone, 2-methyl isophthalic acid-(4-methylthio group phenyl)-2-Malin base-1-acetone, 4-(2-hydroxyl-oxethyl) phenyl-2-(hydroxyl-2-propyl group) ketone, UVNUL MS-40, to phenyl benzophenone, 4; 4-diethylamino UVNUL MS-40, dichloro benzophenone, 2-methylanthraquinone, 2-ethyl-anthraquinone, 2-tertiary butyl anthraquinone, 2-aminoanthraquinone, 2-methyl thioxanthone, 2-ethyl thioxanthone, 2-clopenthixal ketone, 2; 4-dimethyl-thioxanthone, 2; 4-diethyl thioxanthone, benzil dimethyl ketal, methyl phenyl ketone dimethyl ketal, p-(dimethylamino)-benzoic acid ester, oligomeric [2-hydroxy-2-methyl-1-[4-(1-methyl ethylene) phenyl] propane etc.; Both can use a kind in the middle of them separately, and also can make up and use more than 2 kinds.
And; Content when containing Photoepolymerizationinitiater initiater; With respect to (A) composition and (B) total of composition measure 100 weight %; Preferably be made as the interior value of scope of 0.2～20 weight %, more preferably be made as the interior value of scope of 0.5～15 weight %, further preferably be made as the interior value of scope of 1～10 weight %.
5. other additive
In addition, in the scope of not damaging effect of the present invention, can suitably add other additive.
As other additive, for example can enumerate inhibitor, UV light absorber, anti-electrostatic agent interfering, polymerization promotor, inhibitor of polymerization, infrared absorbent, softening agent, diluting solvent and leveling agent etc.
And; For other content of additive; In general, with respect to (A) composition and (B) total of composition measure 100 weight %, preferably be made as the value in the scope of 0.01～5 weight %; More preferably be made as the interior value of scope of 0.02～3 weight %, further preferably be made as the interior value of scope of 0.05～2 weight %.
[second embodiment]
Second embodiment of the present invention is a kind of anisotropy optical diffusion film; It forms with compsn irradiation active energy beam the anisotropy optical diffusion film; It is characterized in that; It is the polymerizable compound of the interior value of 3,000～20,000 scope as (A) composition with the biphenol compound of general formula (1) expression with as the weight-average molecular weight of (B) composition that the anisotropy optical diffusion film contains with compsn; And, the content of (A) composition is made as the interior value of scope of 25～400 weight parts with respect to (B) composition 100 weight parts.
Below, in reference to Fig. 5, be the center with the aspect different with first embodiment, second embodiment of the present invention is specified.
1. method of manufacture
Below, the method for manufacture of anisotropy optical diffusion film of the present invention is described, yet anisotropy optical diffusion film of the present invention is not limited by following method of manufacture certainly.
(1) the anisotropy optical diffusion film is with the preparatory process of compsn
The anisotropy optical diffusion film with the preparatory process of compsn be prepare to contain (A) composition and (B) the given anisotropy optical diffusion film of composition with the operation of compsn.
More particularly, preferably with (A) composition and (B) composition under 40～80 ℃ hot conditions, stir, process uniform mixed solution.
In addition, meanwhile, preferably through behind other the additive that in mixed solution, becomes to grade according to required interpolation (C); Be stirred to apparent going up evenly on one side; On one side, add diluting solvent as required again, and obtain the solution of anisotropy optical diffusion film with compsn to reach the mode of required viscosity.
And, for the details of each composition and cooperation ratio etc., since of record in first embodiment, therefore omit.
(2) painting process
Shown in painting process such as Fig. 5 (a), be the operation that ready anisotropy optical diffusion film is formed coating layer 1 with compsn to 2 coatings of engineering sheet.
As the engineering sheet, no matter be that plastic film or paper can use.
Wherein, as plastic film, can enumerate Mierocrystalline cellulose mesenterys such as polyolefine mesentery, tri acetyl cellulose membranes such as polyester mesentery, polyethylene film, polypropylene screen such as polyethylene terephthalate film and polyimide mesentery etc.
In addition, as paper, for example can enumerate zellglas, White Board and pertinax etc.
In addition,,, be easy to the anisotropy optical diffusion film of gained is peeled off from the engineering sheet, preferably with the coated face side of compsn peel ply be set at the anisotropy optical diffusion film of engineering sheet for after photocuring for the engineering sheet.
This peel ply can use known in the past strippers such as silicone-based stripper, fluorine series stripping agent, alkyd series stripping agent, ethylene series stripper to form.
And the thickness of engineering sheet as a rule preferably is made as the interior value of scope of 25～200 μ m.
In addition, use method for compositions as coating anisotropy optical diffusion film on the engineering sheet, for example can utilize blade coating method, rolling method, rod be coated with method, scraper coating method, optics coating method and intaglio plate coating method etc. in the past known method carry out.
And, at this moment, preferably the thickness of coating layer is made as the value in the scope of 100～700 μ m.
(3) photocuring operation
The photocuring operation is to make the anisotropy optical diffusion film coating layer processed the operation of anisotropy optical diffusion film with the coating layer photocuring of compsn.
That is, shown in Fig. 5 (b), to being formed at the coating layer 1 on the engineering sheet 2, the active energy beam 50 that irradiation only is made up of the direct sunshine of having controlled irradiating angle.
More particularly; For example shown in Fig. 6 (a); In the UV irradiation equipment 20 (for example if commercially available article have Eyegraphics (strain) system, ECS-4011GX etc.) that in the UV-lamp 25 of wire, is provided with the cold mirror 22 that optically focused uses, configuration infrared intercepting filter 21 and tinted shade 23; And take out the active energy beam 50 that only constitutes by the direct sunshine of having controlled irradiating angle, to coating layer 1 irradiation that is formed on the engineering sheet 2.
And; UV-lamp for wire; With the orthogonal direction of length direction with the engineering sheet 2 with coating layer 1 is benchmark (0 °); As a rule be set to-80～80 ° the interior value of scope, preferably be set to-50～50 ° the interior value of scope, especially preferably be set to-30～30 ° the interior value of scope.
At this moment, as the irradiating angle of irradiates light, shown in Fig. 6 (b), the irradiating angle θ 3 in the time of as a rule preferably will being 0 ° with the angle with respect to the normal to a surface of coating layer 1 is made as the value in-80～80 ° the scope.
Its reason is because if irradiating angle θ 3 is extraneous values of-80～80 °, then the influence of the reflection in the surface of coating layer 1 etc. will become greatly, thereby has the situation that is difficult to form sufficient shutter.
In addition, irradiating angle θ 3 preferably has 1～80 ° width (irradiating angle width) θ 3 '.
Its reason is because if this irradiating angle width θ 3 ' is the value less than 1 °, then the interval of shutter will be narrow, thereby have the situation that is difficult to obtain the anisotropy optical diffusion film.On the other hand, if this irradiating angle width θ 3 ' surpasses 80 ° value, then irradiates light will too disperse, thereby has the situation that is difficult to form shutter.
So, more preferably the irradiating angle width θ 3 ' of irradiating angle θ 3 is made as the value in 2～45 ° the scope, further preferably be made as the value in 5～20 ° the scope.
And, through using linear light source, come down to directional light in the time of just can shining from axially the seeing of linear light source, be non-parallel irradiates light when seeing with the axial vertical direction of linear light source.
In addition,, can enumerate ultraviolet ray, electron beam etc. as irradiates light, however preferred use ultraviolet ray.
Its reason is because under the situation of electron beam, because polymerization velocity is very fast, so (A) composition can't be separated with (B) composition fully in the polymerization process, thereby has the situation that is difficult to form shutter.On the other hand, with visible light etc. relatively the time, ultraviolet ray one side utilizes its irradiation and the variation of solidified ultraviolet curable resin, operable light trigger is abundant, therefore can widen (A) composition and reach (B) scope of the selection of composition.
In addition, as the ultraviolet irradiation condition, the peak illumination during preferred so that irradiation is 0.1～50mW/cm 2Scope in value and reach with coating layer fully the mode of solidified accumulative total light quantity carry out.
And, also preferably to reach with the coating layer mode of solidified accumulative total light quantity fully, multistage ground irradiation ultraviolet radiation.
In addition, the coating layer that is formed on the engineering sheet is moved with 0.1～10m/ minute speed, pass the uviolizing part of UV irradiation equipment.
Its reason is because if this speed is the value less than 0.1m/ minute, then have the situation that mass productivity excessively reduces.On the other hand; If this speed is to surpass 10m/ minute value; Then can be than the curing of coating layer, in other words, than the formation of shutter quickly; Ultraviolet ray changes along film thickness direction with respect to the incident angle of coating layer significantly, thereby has the sufficient inadequately situation of formation of shutter.
So, the coating layer that is formed on the engineering sheet is moved with the speed in 0.2～5m/ minute the scope, pass the uviolizing part of UV irradiation equipment, further preferably pass with the speed in 0.5～3m/ minute the scope.
And shown in Fig. 5 (c), the anisotropy optical diffusion film 10 after the photocuring operation finally becomes operable state through peeling off engineering sheet 2.
2. thickness
In addition, preferably the thickness of anisotropy optical diffusion film is made as the value in the scope of 100～500 μ m.
Its reason be because; Be made as the value in this scope through thickness with the anisotropy optical diffusion film; Even when range upon range of and direct state with individual layer is not applied in reflection-type liquid-crystal display device etc. with the anisotropy optical diffusion film; Also can be effectively with ambient light as the light source utilization, and can prevent that the boldness of institute's images displayed from reducing or occurring the generation of the problem of iridescent.
Just because; If this thickness is the value less than 100 μ m; The length that then is formed at the shutter of the film thickness direction in the film becomes too short, and the incident light of in shutter, keeping straight on increases, and is difficult to obtain the dependent situation of enough incident angles thereby have.On the other hand, if this thickness is the value that surpasses 500 μ m, then because long-time irradiation irradiates light, so productivity excessively reduces, or the shutter that irradiates light was formed by the initial stage diffuses away, thereby has the situation that is difficult to form required shutter.
So, more preferably the thickness of anisotropy optical diffusion film is made as the value in the scope of 130～300 μ m, further preferably be made as the value in the scope of 150～250 μ m.
3. shutter
In addition; Shown in Fig. 7 (a)～(c); Anisotropy optical diffusion film 10 of the present invention possesses the shutter that alternately extends with the plate like region 12 that derives from (A) composition, with the plate like region 14 that derives from (B) composition, yet the width separately (S1, S2) that preferably will derive from the plate like region 12 of (A) composition and derive from the plate like region 14 of (B) composition is made as the interior value of scope of 0.1～15 μ m.
Its reason is because if this width is the value less than 0.1 μ m, then no matter why the incident angle of incident light all can have the situation that is difficult to demonstrate light diffusing.On the other hand, if this width is to surpass the value of 15 μ m then opposite, no matter the incident angle of incident light why, all the situation that is difficult to demonstrate light diffusing can be arranged.
So the width separately (S1, S2) that more preferably will derive from the plate like region 12 of (A) composition and derive from the plate like region 14 of (B) composition is made as the value in the scope of 0.5～10 μ m, further preferably be made as the value in the scope of 1～5 μ m.
In addition, preferably the initial stage tiltangle 4 of shutter is made as the value in 0～80 ° the scope.
Its reason is because if should initial stage tiltangle 4 be to surpass 80 ° value, then have and be difficult to demonstrate the dependent situation of incident angle.
So, more preferably the initial stage tiltangle 4 of shutter is made as the value in 0～50 ° the scope.
And, so-called initial stage tiltangle 4, as shown in Figure 7, be meant the angle of a side narrow in normal and the window shutter angulation of face of incident light irradiation side.
More particularly, initial stage tiltangle 4 is meant, measure with vertical cutting of the shutter that extends along the face direction film time will be made as 0 ° with respect to the angle of the normal of face the time plate like region the pitch angle (°).
In addition, as shown in Figure 7, the pitch angle when tilting to the right with plate like region is as benchmark, and the negative value souvenir is used at the pitch angle when plate like region is tilted to the left.
In addition; The anisotropy optical diffusion film 10 of this embodiment both can be shown in whole film thickness direction like Fig. 7 (a) and form shutter (film thickness direction length L 1), also can have the window shutter of formation part (film thickness direction length L 2) like the upper end portion of Fig. 7 (b) film that is shown in 10, any at least side of end portion.
In addition, the length L 1 of the film thickness direction of shutter is decided by the thickness of anisotropy optical diffusion film 10, yet in general, is preferably the interior value of scope of 50～500 μ m.
Its reason is because if this length is the value less than 50 μ m, the incident light of then in shutter, keeping straight on increases, and is difficult to obtain the dependent situation of enough incident angles thereby have.On the other hand, if this length is the value that surpasses 500 μ m, produces reflection of light during then having in passing shutter or absorb equal loss's situation.
So, more preferably the length of the film thickness direction L1 of shutter is made as the value in the scope of 130～300 μ m, further preferably be made as the value in the scope of 150～250 μ m.
In addition; The width L2 that does not form the upper and lower ends part of shutter is decided by the thickness of anisotropy optical diffusion film 10, yet in general, is preferably the interior value of scope of 0～200 μ m; The value in the scope of 0～100 μ m more preferably further is preferably the value in the scope of 0～50 μ m.
In addition, shown in Fig. 7 (c), also preferred shutter is crooked.
Its reason is because because of shutter is crooked, and can reduce the incident light of in shutter, keeping straight on, the homogeneity of raising light diffusion.
And; This kind bending shutter can be through when carrying out the anisotropy optical diffusion film with the photocuring of compsn; Irradiating angle irradiates light while changing irradiates light obtains, and reaches (B) kind of composition yet also depend on (A) composition largely.
In addition, preferably the specific refractory power of the plate like region of deriving from the shutter (A) composition is made as the value in 1.5～1.7 the scope.
Its reason be because, be value if derive from the specific refractory power of the plate like region of (A) composition less than 1.5, then will be too small with the difference of the specific refractory power of the plate like region that derives from (B) composition, can't obtain required anisotropic situation thereby have.On the other hand, be to surpass 1.7 value if derive from the specific refractory power of the plate like region of (A) composition, then have the situation that became low with (B) intermiscibility of composition.
So, more preferably the specific refractory power of the plate like region of deriving from the shutter (A) composition is made as the value in 1.52～1.65 the scope, further preferably be made as the value in 1.55～1.6 the scope.
And specific refractory power for example can be measured according to JIS K0062.
In addition, preferably the specific refractory power of the plate like region of deriving from the shutter (B) composition is made as the value in 1.4～1.5 the scope.
Its reason be because, be value if derive from the specific refractory power of the plate like region of (B) composition less than 1.4, then have the inflexible situation of the anisotropy optical diffusion film that reduces gained.On the other hand, be to surpass 1.5 value if derive from the specific refractory power of the plate like region of (B) composition, then the difference with the specific refractory power of the plate like region that derives from (A) composition becomes too small, is difficult to obtain required anisotropic situation thereby have.
So, more preferably the specific refractory power of the plate like region of deriving from the shutter (B) composition is made as the value in 1.42～1.48 the scope, further preferably be made as the value in 1.44～1.46 the scope.
And specific refractory power for example can be measured according to JIS K0062.
In addition, in the anisotropy optical diffusion film of this embodiment, preferably with the specific refractory power of the plate like region of deriving from the shutter (A) composition, be made as the value more than 0.01 with the difference of the specific refractory power of the plate like region that derives from (B) composition.
Therefore its reason is because if the difference of this specific refractory power is the value less than 0.01, then because incident light narrows down in the angular regions of shutter inner total reflection, have the situation that the opening angle of diffusion light becomes narrow.
So, more preferably with the specific refractory power of the plate like region of deriving from the shutter (A) composition, be made as the value more than 0.03 with the difference of the specific refractory power of the plate like region that derives from (B) composition.
And, though the difference of specific refractory power be the bigger the better, yet can think that about 0.1 is the upper limit.
4. purposes
In addition, as shown in Figure 8, preferably anisotropy optical diffusion film of the present invention is used for reflection-type liquid-crystal display device 100.
Its reason is because if anisotropy optical diffusion film of the present invention, just can import the inside of liquid crystal indicator according to ambient light is seen through effectively, and can the mode of this light as the light source utilization be spread with being effective.
So; Anisotropy optical diffusion film preferred disposition of the present invention above the liquid crystal cells 110 that comprises sheet glass (104,108) and liquid crystal 106 and mirror reflective plate 107 etc., or below, use as the light diffusing sheet of reflection-type liquid-crystal display device 100 103.
[embodiment]
Below, with reference to embodiment, the present invention will be described in more detail.
[embodiment 1]
1. (B) composition is synthetic
In container; With respect to weight-average molecular weight 9 as (b) composition; 1 mole of 200 W 166 (PPG) is accommodated as 2 moles of the isophorone diisocyanates (IPDI) of (a) composition and as behind 2 moles of the 2-hydroxyethyl methacrylates (HEMA) of (c) composition, makes it polymerization according to well-established law; Obtain the polyethers carbamate methacrylic ester of weight-average molecular weight 9,900.
And the weight-average molecular weight of PPG and polyethers carbamate methacrylic ester is to utilize gel permeation chromatography (GPC), accordings to the polystyrene conversion value that following condition determines.
GPC determinator: Tosoh (strain) system, HLC-8020
GPC pillar: Tosoh (strain) system (following) according to putting down in writing through order
TSK?guard?column?HXL-H
TSK?gel?GMHXL(×2)
TSK?gel?G2000HXL
Measure solvent: THF
Measure temperature: 40 ℃
2. the anisotropy optical diffusion film is used preparation of compositions
Then; Weight-average molecular weight 9 with respect to conduct (B) composition of gained; 900 polyethers carbamate methacrylic ester 100 weight parts; After adding adjacent phenyl phenoxyethyl acrylate (Xin Zhong village chemistry (strain) system, NK EsterA-LEN-10) 100 weight parts and 2-hydroxy-2-methyl Propiophenone 10 weight parts as (C) composition with the weight-average molecular weight 268 of following formula (3) expression as (A) composition; Under 80 ℃ condition, heat mixing, obtain the anisotropy optical diffusion film and use compsn.
Here, (A) composition and (B) specific refractory power of composition be utilize Abbe refractometer (ATAGO (strain) system, trade(brand)name: Abbe refractometer DR-M2, light source: Na light source, wavelength: about 589nm), according to JIS K0062 mensuration.
And, will be called biphenyl-1 with the compound of formula (3) expression sometimes below.
[changing 10]
Figure BDA0000118714080000301
3. the anisotropy optical diffusion film is with the coating of compsn
Then, with the anisotropy optical diffusion film of gained with compsn use divider coat transparent polyethylene terephthalate film as the engineering sheet (below be called PET.) on, obtain the coating layer of thickness 250 μ m.
4. the photocuring of coating layer
Then, be ready to the UV irradiation equipment (Eyegraphics (strain) system, ECS-4011GX) of in the high pressure mercury vapour lamp of wire, setting up the cold mirror that optically focused uses as shown in Figure 6.
Then; On the infrared intercepting filter frame, tinted shade is set; To be set to the ultraviolet ray of the surface irradiation of coating layer; Being made as in the normal direction of the duplexer that comprises coating layer and PET that will be when the length direction of the UV-lamp of wire is seen under 0 ° the situation, is 0～10 ° scope (3 '=10 ° of irradiating angle width θ) from the direct ultraviolet irradiation angle (θ 3 of Fig. 6 (b)) of lamp.
At this moment, the height that is set at the lamp of counting from coating layer is 290mm, and peak illumination is 9mW/cm 2
In addition, the reflected light that tinted shade etc. are located becomes stray light in irradiating machine inside, in order to prevent that the photocuring of coating layer is impacted, tinted shade is set also near travelling belt, sets to the mode of coating layer irradiation according to the ultraviolet ray that only will from lamp, directly send.
Then, utilize travelling belt with coating layer to Fig. 6 right-hand irradiation ultraviolet radiation when moving with 0.2m/ minute speed, obtain the anisotropy optical diffusion film of thickness 250 μ m.
And the thickness of anisotropy optical diffusion film is to use constant voltage thickness electricity measurer (precious institute's (strain) system, the TECLOCK PG-02J of making) to measure.
In addition; Utilize optical digital microscope (Kyence (strain) system) to observe the cross section of this anisotropy optical diffusion film; Consequently; The pitch angle of the shutter of the face side that irradiates light is got at first (initial stage pitch angle) is 6.5 °, and the length of the film thickness direction of shutter (L1 of Fig. 7 (b)) is 200 μ m.
5. estimate
(1) based on the dependent evaluation of measuring of incident angle
Use angle colour meter (Suga trier (strain) system, VC-2),, inject light (2 ° of illuminant-C, field angle) to this film from the below of the anisotropy optical diffusion film of gained.
Then, the brightness (%) of the diffusion light that spreads by the anisotropy optical diffusion film of every goniometry at a distance from 5 °.
Then, the difference of the brightness between the adjacent measuring point is made as diffusion zone less than the angular range between the measuring point at 10% two ends, with the angular width of this angular regions be made as diffusion light opening angle (°).
The absolute value of the peak of the MV of the diffusion zone when in addition, the input angle of incident light being 0 °, the brightness of this diffusion zone and the brightness of this MV and diffusion zone and the difference of minimum value is shown in the table 1 respectively.
In addition, change the input angle of incident light continuously, the opening angle of the diffusion light when measuring each input angle is that the scope of the incident angle more than 10 ° is made as light diffusion incident angle zone with the opening angle of this diffusion light.The result of gained is shown in the table 1.
And the value of the opening angle of diffusion light is big more, means that then the input angle incident incident light with this moment is spread by the anisotropy optical diffusion film effectively.
On the contrary, the opening angle of diffusion light is more little, means that then the input angle incident light former state with this moment sees through anisotropy optical diffusion film, not diffusion unchangeably.
In addition, for embodiment 1,3 and 4, will in transverse axis, take with respect to the anisotropy optical diffusion film input angle (°), in the longitudinal axis, take diffusion light opening angle (°) rational curve be shown among Fig. 9 respectively.
And; For example in situation as embodiment 1; Under the situation of the measuring point when on rational curve, not existing the opening angle of diffusion light to be 10 °, then according to the input angle at the collinear intersection point place of opening angle=10 of rational curve (outer plug wire) and diffusion light ° (°) value obtain the value in light diffusion incident angle zone.
(2) based on visual anisotropic evaluation
(2)-1 light diffusing
View when being situated between by visual its opposite side situation of this film from the front (dispersal direction) of anisotropy optical diffusion film to 5 group members is estimated according to following benchmark, as the evaluation based on visual light diffusing.The result of gained is shown in the table 1.
A:5 philtrum 5 people are judged as has enough opacity.
B:5 philtrum 3～4 people are judged as has enough opacity.
Yet opacity is relatively poor to have opacity after all though C:5 philtrum 3～5 people are judged as.
D:5 philtrum 3～4 people are judged as does not have opacity.
E:5 philtrum 5 people are judged as does not have opacity.
(2)-2 photopermeability
To the view of 5 group members when oblique 45 ° of directions of anisotropy optical diffusion film (seeing through direction) are situated between by visual its opposite side situation of this film, estimate according to following benchmark, as evaluation based on visual photopermeability.The result of gained is shown in the table 1.
◎: 5 philtrums, 5 people are judged as transparent fully and do not have painted.
Zero: 5 philtrum 3～4 people are judged as transparent fully and do not have painted.
△: 5 philtrums, 3～4 people are judged as and demonstrate gonorrhoea or yellow.
*: 5 philtrums, 5 people are judged as and demonstrate gonorrhoea or yellow.
[embodiment 2]
Among the embodiment 2; Except through (b) composition being changed to the weight-average molecular weight PPG littler than the situation of embodiment 1; And will become 6 as the weight-average molecular weight of the polyethers carbamate methacrylic ester of (B) composition; Beyond 100, prepare the anisotropy optical diffusion film with embodiment 1 identically and use compsn, make, estimated the anisotropy optical diffusion film.The result of gained is shown in the table 1.
[embodiment 3]
Among the embodiment 3; Except through (b) composition being changed to the weight-average molecular weight PPG bigger than the situation of embodiment 1; And will become 14 as the weight-average molecular weight of the polyethers carbamate methacrylic ester of (B) composition; Beyond 500, prepare the anisotropy optical diffusion film with embodiment 1 identically and use compsn, make, estimated the anisotropy optical diffusion film.The result of gained is shown in the table 1.
[embodiment 4]
Among the embodiment 4; Except with respect to (B) composition 100 weight parts, the addition of (A) composition is made as 60 weight parts, the addition of (C) composition is made as beyond 20 weight parts; Prepare the anisotropy optical diffusion film with embodiment 1 identically and use compsn, make, estimated the anisotropy optical diffusion film.The result of gained is shown in the table 1.
[embodiment 5]
Among the embodiment 5, except with respect to (B) composition 100 weight parts, the addition of (A) composition is made as beyond 150 weight parts, prepares the anisotropy optical diffusion film with embodiment 1 identically and use compsn, make, estimated the anisotropy optical diffusion film.The result of gained is shown in the table 1.
[embodiment 6]
Among the embodiment 6; Except when synthetic (B) composition; Use vinylformic acid 2-hydroxy methacrylate (HEA) as (c) composition,, the addition of (C) composition is made as beyond 20 weight parts with respect to (B) composition 100 weight parts; Prepare the anisotropy optical diffusion film with embodiment 1 identically and use compsn, make, estimated the anisotropy optical diffusion film.The result of gained is shown in the table 1.
[embodiment 7]
Among the embodiment 7, except the thickness with the anisotropy optical diffusion film is made as 500 μ m, prepares the anisotropy optical diffusion film with embodiment 6 identically and use compsn, make, estimated the anisotropy optical diffusion film.The result of gained is shown in the table 1.
[embodiment 8]
Among the embodiment 8; Except with respect to (B) composition 100 weight parts; The addition of (C) composition is become 4 weight parts; And the thickness of anisotropy optical diffusion film is made as beyond the 500 μ m, prepares the anisotropy optical diffusion film with embodiment 6 identically and use compsn, make, estimated the anisotropy optical diffusion film.The result of gained is shown in the table 1.
[embodiment 9]
Among the embodiment 9; Except with respect to (B) composition 100 weight parts; The addition of (C) composition is become 2 weight parts; And the thickness of anisotropy optical diffusion film is made as beyond the 500 μ m, prepares the anisotropy optical diffusion film with embodiment 6 identically and use compsn, make, estimated the anisotropy optical diffusion film.The result of gained is shown in the table 1.
[embodiment 10]
Among the embodiment 10; Except used weight-average molecular weight with following formula (4) expression as (A) composition is 312 the adjacent phenyl phenoxy ethoxyethyl group propenoate; Prepare the anisotropy optical diffusion film with embodiment 1 identically and use compsn, make, estimated the anisotropy optical diffusion film.The result of gained is shown in the table 1.
And, will be called biphenyl-2 with the compound of formula (4) expression sometimes below.
[changing 11]
[embodiment 11]
Among the embodiment 11, except the mixture of 50: 50 (weight ratio) (A) being become to be divided into biphenyl 1 and biphenyl 2, prepare the anisotropy optical diffusion film with embodiment 1 identically and use compsn, make, estimated the anisotropy optical diffusion film.The result of gained is shown in the table 1.
[comparative example 1]
In the comparative example 1; Except (B) composition being become succsinic acid (2-acryloxy ethyl ester) (weight-average molecular weight: 216) (Xin Zhong village chemistry (strain) system, NK Ester A-SA); With respect to (B) composition 100 weight parts, the addition of (C) composition is become 20 weight parts, and the thickness of anisotropy optical diffusion film is made as beyond the 500 μ m; Prepare the anisotropy optical diffusion film with embodiment 1 identically and use compsn, make, estimated the anisotropy optical diffusion film.The result of gained is shown in the table 1.
[comparative example 2]
In the comparative example 2; Except when synthesizing the polyethers carbamate methacrylic ester of conduct (B) composition; Use vinylformic acid 2-hydroxy methacrylate (HEA) as (c) composition, and the weight-average molecular weight of polyethers carbamate methacrylic ester is become 740, also the thickness with the anisotropy optical diffusion film is made as beyond the 500 μ m; Prepare the anisotropy optical diffusion film with embodiment 1 identically and use compsn, make, estimated the anisotropy optical diffusion film.The result of gained is shown in the table 1.
[comparative example 3]
In the comparative example 3; Except (A) composition being become ethoxylation bisphenol A-type diacrylate (Xin Zhong village chemistry (strain) system, NK Ester A-BPE-4) with following formula (5) expression; With respect to (B) composition 100 weight parts; The addition of (C) composition is made as beyond 4 weight parts, prepares the anisotropy optical diffusion film with embodiment 1 identically and use compsn, make, estimated the anisotropy optical diffusion film.The result of gained is shown in the table 1.
[changing 12]
Figure BDA0000118714080000351
[comparative example 4]
In the comparative example 4; Except (A) composition being become with 9 of following formula (6) expression; 9 '-two [4-(2-acryloyl-oxy base oxethyl) phenyl] fluorenes (Xin Zhong village chemistry (strain) system, NK Ester A-BPEF) with respect to (B) composition 100 weight parts, is made as the addition of (C) composition beyond 4 weight parts; Prepare the anisotropy optical diffusion film with embodiment 1 identically and use compsn, make, estimated the anisotropy optical diffusion film.The result of gained is shown in the table 1.
[changing 13]
Figure BDA0000118714080000352
[table 1]
Figure BDA0000118714080000361
Shown in as above detailing; According to the present invention; The compound that contains cyclohexyl biphenyl through will having specific structure, cooperate with given ratio, can obtain to have the dependent anisotropy optical diffusion film of good incident angle with the polymerizable compound of value in weight-average molecular weight is given scope.
More particularly, can obtain light see through and diffusion in have the wide anisotropy optical diffusion film of good incident angle dependency and light diffusion incident angle zone.
So; Anisotropy optical diffusion film of the present invention is with compsn is in the light control film that can be applied to reflection-type liquid-crystal display device; Can also be applied to be expected to their high-qualityization generation is contributed significantly in field angle controlling diaphragm, field angle expansion film and the screen for projection.

Claims (10)

1. an anisotropy optical diffusion film is used compsn, its contain as (A) composition be the polymerizable compound of the interior value of 3,000～20,000 scope with the biphenol compound of formula (1) expression with as the weight-average molecular weight of (B) composition,
With respect to said (B) composition 100 weight parts, the content of said (A) composition is made as the interior value of scope of 25～400 weight parts;
[changing 1]
In the general formula (1), R 1～R 10Independent separately, R 1～R 10At least one be substituting group with formula (2) expression, remaining is any substituting group of Wasserstoffatoms, hydroxyl, carboxyl, alkyl, alkoxyl group, halogenated alkyl, hydroxyalkyl, carboxyalkyl and halogen atom;
[changing 2]
Figure FDA0000118714070000012
In the general formula (2), R 11Be Wasserstoffatoms or methyl, carbon number n is 1～4 integer, and repeat number m is 1～10 integer.
2. anisotropy optical diffusion film according to claim 1 is used compsn, it is characterized in that, and in said general formula (1), R 2～R 9Any one be substituting group with said general formula (2) expression.
3. anisotropy optical diffusion film according to claim 1 is used compsn, it is characterized in that, the weight-average molecular weight of said (A) composition is made as 200～2, the value in 500 the scope.
4. anisotropy optical diffusion film according to claim 1 is used compsn, it is characterized in that, the specific refractory power of said (A) composition is made as the value in 1.5～1.65 the scope.
5. anisotropy optical diffusion film according to claim 1 is used compsn, it is characterized in that, said (B) composition is carbamate (methyl) propenoate.
6. anisotropy optical diffusion film according to claim 1 is used compsn, it is characterized in that, the specific refractory power of said (B) composition is made as the value in 1.4～1.5 the scope.
7. anisotropy optical diffusion film according to claim 1 is used compsn, it is characterized in that, the difference of the specific refractory power of the specific refractory power of said (A) composition and said (B) composition is made as the value more than 0.01.
8. anisotropy optical diffusion film according to claim 1 is used compsn, it is characterized in that, as (C) composition; Contain Photoepolymerizationinitiater initiater; And with respect to said (A) composition and (B) the total amount of composition, i.e. 100 weight % are made as its content the value in the scope of 0.2～20 weight %.
9. anisotropy optical diffusion film, it is characterized in that through the anisotropy optical diffusion film is formed with compsn irradiation active energy beam,
Said anisotropy optical diffusion film with compsn contain as (A) composition be the polymerizable compound of the interior value of 3,000～20,000 scope with the biphenol compound of formula (1) expression with as the weight-average molecular weight of (B) composition,
And, the content of said (A) composition is made as the interior value of scope of 25～400 weight parts with respect to said (B) composition 100 weight parts;
[changing 3]
Figure FDA0000118714070000021
In the general formula (1), R 1～R 10Independent separately, R 1～R 10At least one be substituting group with formula (2) expression, remaining is any substituting group of Wasserstoffatoms, hydroxyl, carboxyl, alkyl, alkoxyl group, halogenated alkyl, hydroxyalkyl, carboxyalkyl and halogen atom;
[changing 4]
In the general formula (2), R 11Be Wasserstoffatoms or methyl, carbon number n is 1～4 integer, and repeat number m is 1～10 integer.
10. anisotropy optical diffusion film according to claim 9 is characterized in that, thickness is made as the value in the scope of 100～500 μ m.
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