KR20220084397A - Polarizer composite and optical laminate - Google Patents

Abstract

The polarizer composite has a polarizer, a first reinforcing material provided on one surface side of the polarizer, and a second reinforcing material provided on the other surface side of the polarizer. A polarizer has a polarization area|region whose thickness is 15 micrometers or less, and a non-polarization area|region surrounded by the polarization area|region in planar view. The first reinforcing member has a plurality of first cells each having an open end face, and is arranged so that each open end face faces the surface of the polarizer. The first reinforcing material has a cell region in which the first cell is present and in a region corresponding to the polarization region, and a non-cell region in which the first cell is not present and in a region corresponding to the non-polarization region. The second reinforcing member has a plurality of second cells each having an open end face, and is arranged so that each open end face faces the surface of the polarizer. A 2nd reinforcement material has a some 2nd cell, and a 2nd cell exists at least in the area|region corresponding to a non-polarization area|region. The non-polarization region and the non-cell region contain the cured product of the active energy ray-curable resin composition, and the cured product contained in the non-polarization region is provided in the through hole surrounded by the polarization region in plan view.

Description

Polarizer composite and optical laminate

The present invention relates to a polarizer composite and an optical laminate.

A polarizer is widely used as a polarization|polarized-light supply element in display apparatuses, such as a liquid crystal display device and an organic electroluminescent (EL) display device, and also as a polarization detection element. A display device having a polarizer is also being developed in mobile devices such as notebook personal computers and mobile phones, and polarizers having different transmittance areas are required from the demands for diversification of display purposes, clarification of display divisions, decoration, etc. is becoming In particular, in small and medium-sized portable terminals typified by smart phones and tablet-type terminals, a polarizer may be bonded to the entire display surface in order to provide a borderless design over the entire surface from the viewpoint of decorativeness. In this case, since the polarizer may also overlap the area of the camera lens and the area of the icon or logo printed below the screen, there is a problem that the sensitivity of the camera is deteriorated or the designability is inferior.

For example, in Patent Document 1, a dichroic substance low concentration part having a relatively low dichroic substance content is partially provided in a polarizer included in a polarizing plate, and the camera is arranged in correspondence with this dichroic substance low concentration part, so that the camera performance is adversely affected. It is described not to give it.

Patent Document 1: Japanese Patent Laid-Open No. 2015-215609

In patent document 1, the resin film is partially decolorized and the dichroic substance low concentration part is formed by performing the chemical process of making a basic solution contact the resin film containing a dichroic substance. Since the basic solution used for decolorization is treated as a waste liquid, labor and cost are required. Moreover, in patent document 1, when iodine as a dichroic substance is used, it is described that content of iodine can be reduced and a dichroic substance low concentration part can be formed by making a basic solution contact. However, there is no disclosure of a specific method for forming a low concentration portion of a dichroic substance when a dichroic substance other than iodine is used.

An object of the present invention is to provide a polarizer composite including a novel polarizer and an optical laminate instead of a polarizer in which a region having a low content of a dichroic substance is formed by chemical treatment such as decolorization.

The present invention provides the following polarizer composite and optical laminate.

[1] A polarizer composite having a polarizer, a first reinforcing material provided on one surface side of the polarizer, and a second reinforcing material provided on the other surface side of the polarizer,

The polarizer has a polarization region having a thickness of 15 μm or less and a non-polarization region surrounded by the polarization region in plan view,

The first reinforcing material,

a plurality of first cells having an open end face, and each open end face is arranged to face the face of the polarizer;

a cell region in which the first cell is present and in a region corresponding to the polarization region, and a non-cell region in which the first cell is not present and in a region corresponding to the non-polarization region;

The second reinforcing material,

a plurality of second cells having an open end face, and each open end face is arranged to face the face of the polarizer;

the second cell is present in at least a region corresponding to the non-polarization region;

The non-polarization region and the non-cell region include a cured product of an active energy ray-curable resin, and the cured product contained in the non-polarization region is provided in a through hole surrounded by the polarization region in plan view, a polarizer composite .

[2] The polarizer composite according to [1], wherein the thickness of the cured product is the same as the total thickness of the thickness of the polarization region and the thickness of the cell region.

[3] The polarizer composite according to [1], wherein a thickness of the cured product is smaller than a total thickness of a thickness of the polarization region and a thickness of the cell region.

[4] The polarizer composite according to [1], wherein a thickness of the cured product is larger than a total thickness of a thickness of the polarization region and a thickness of the cell region.

[5] The polarizer composite according to any one of [1] to [4], wherein the non-polarization region has light transmission properties.

[6] The polarizer composite according to any one of [1] to [5], wherein the planar diameter of the non-polarization region is 0.5 mm or more and 20 mm or less.

[7] The polarizer composite according to any one of [1] to [6], wherein the active energy ray-curable resin contains an epoxy compound.

[8] The polarizer composite according to [7], wherein the epoxy compound contains an alicyclic epoxy compound.

[9] The polarizer composite according to any one of [1] to [8], wherein the shapes of the openings of the first cell and the second cell are each independently a polygonal shape, a circular shape, or an elliptical shape.

[10] The polarizer composite according to any one of [1] to [9], wherein a light-transmitting filler is provided in the inner space of the first cell.

[11] The polarizer composite according to any one of [1] to [10], wherein a light-transmitting filler is provided in the inner space of the second cell.

[12] An optical laminate having a protective layer on one side or both sides of the polarizer composite according to any one of [1] to [11].

According to the present invention, it is possible to provide a polarizer composite and an optical laminate having a novel polarizer.

1 (a) is a schematic cross-sectional view schematically showing an example of the polarizer composite of the present invention, (b) is a schematic plan view of the polarizer composite shown in (a) on the first reinforcing material side, (c) is It is a schematic plan view of the 2nd reinforcing material side of the polarizer composite shown to (a).
(a) and (b) of [FIG. 2] are schematic sectional drawing which shows typically another example of the polarizer composite of this invention.
3 (a) and (b) are diagrams schematically showing an example of a cross section around the non-polarization region and the non-cell region of the polarizer composite, and a method for determining the thickness of the cured product provided in the non-polarization region and the non-cell region It is an explanatory diagram for explaining.
4(a)-(d) are schematic cross-sectional views which show typically an example of the manufacturing method of the polarizer composite_body|complex of this invention.
(a) and (b) of [FIG. 5] are schematic sectional drawing which shows typically the continuation of the manufacturing method of the polarizer composite_body|complex shown in FIG.
6 is a schematic cross-sectional view schematically showing an example of the optical laminate of the present invention.

EMBODIMENT OF THE INVENTION Hereinafter, with reference to drawings, preferable embodiment of the polarizer of this invention, a polarizer composite, and an optical laminated body is demonstrated. In all the drawings below, the scales are appropriately adjusted to facilitate understanding of each component, and the scale of each component shown in the drawings does not necessarily coincide with the scale of the actual component.

<Polarizer complex>

Fig. 1 (a) is a schematic cross-sectional view schematically showing an example of the polarizer composite of the present embodiment, and Fig. 1 (b) is a schematic plan view of the polarizer composite shown in Fig. 1 (a) on the side of the first reinforcement. , Fig. 1C is a schematic plan view of the polarizer composite shown in Fig. 1A on the side of the second reinforcing material. Fig.2 (a) and (b) are schematic cross-sectional views which show another example of the polarizer composite_body|complex of this embodiment. The polarizer composite 40 shown in FIGS. 1 and 2 includes a polarizer 10 , a first reinforcing material 50 provided on one surface side of the polarizer 10 , and a first reinforcing material 50 provided on the other surface side of the polarizer 10 . It has 2 reinforcing materials (60).

The polarizer 10 which the polarizer composite 40 has has the polarization area|region 11 and the non-polarization area|region 12, as shown to Fig.1 (a). The thickness of the polarization region 11 is 15 µm or less.

Arrangement of the polarization area|region 11 in the polarizer 10 and the non-polarization area|region 12 will not be specifically limited if the polarization area|region 11 is provided so that the non-polarization area|region 12 may be enclosed. It is preferable that the total area occupied by the polarization area|region 11 in planar view of the polarizer 10 is larger than the total area which the non-polarization area|region 12 occupies. The polarizer 10 should just have one non-polarization area|region 12, and may have the non-polarization area|region 12 two or more. When having two or more non-polarization regions 12, the shapes of each non-polarization region 12 may be the same as or different from each other.

The first reinforcing material 50 included in the polarizer composite 40 has a plurality of first cells 51 each having an open end surface, as shown in Fig. 1(b) as an example, and each of the open end surfaces They are arranged to face the surface of the polarizer 10 . The first reinforcing material 50 has a cell region 55 in which the first cell 51 exists and a non-cell region 56 in which the first cell 51 does not exist. The first cell 51 has a hollow columnar (tubular) structure surrounded by cell partition walls 53 that partition the first cell 51, and the axially opposite ends of the columnar structure are open end faces. it has been In the non-cell region 56 in which the first cell 51 does not exist, a hollow columnar (tubular) space surrounded by the cell partition walls 53 and the cell partition walls 53 constituting the first cell 51 does not exist. It is an area that does not

In the first reinforcing material 50 , the cell region 55 exists in a region corresponding to the polarization region 11 present in the polarizer 10 , and the non-cell region 56 is a non-polarization region of the polarizer 10 . It is present in the region corresponding to the region 12 . Here, the presence of the cell region 55 in the region corresponding to the polarization region 11 means that the cell region 55 and the polarization region 11 are substantially identical to each other and have substantially the same dimensions in a planar view. Likewise, that the non-cell region 56 is in a region corresponding to the non-polarization region 12 means that, in the plan view direction, the non-cell region 56 and the non-polarization region 12 are at approximately the same position and approximately the same. It means that the shape is approximately the same size (diameter). In other words, when the non-cell region 56 is projected onto the polarizer 10 in a planar view, the projected region of the non-cell region 56 and the non-polarization region 12 in the polarizer 10 are approximately say the same thing According to the manufacturing means of the polarizer composite mentioned later, the polarizer composite which exists in the area|region where the cell area|region 55 corresponds to the polarization area|region 11 can be manufactured efficiently. When the polarizer 10 included in the polarizer composite 40 has two or more non-polarization regions 12, if the non-cell region 56 is present in the region corresponding to at least one non-polarization region 12, The cell region 55 may exist in the region corresponding to the other non-polarization region 12 .

The second reinforcing material 60 included in the polarizer composite 40 has a plurality of second cells 61 each having an open end surface, as shown in Fig. 1(c), and each of the open end surfaces is They are arranged to face the surface of the polarizer 10 . Like the first cell 51 , the second reinforcing member 60 has a hollow columnar (tubular) structure surrounded by the cell partition walls 63 that partition the second cell 61, and is the axis of the columnar structure. Both ends in the direction are open end faces. In the second reinforcing material 60, unlike the first reinforcing material 50, the second cell 61 is also present in the area corresponding to the non-polarization area 12 (a portion indicated by a broken line in Fig. 1C). do. As for the 2nd reinforcement material 60, it is preferable that the 2nd cell 61 exists in both the polarization area|region 11 and the non-polarization area|region 12, and the 2nd cell 61 is present in the whole surface of the polarizer 10. It is more preferable that this exists.

The non-polarization area|region 12 of the polarizer 10 and the non-cell area|region 56 of the 1st reinforcing material 50 are hardened|cured material of active energy ray-curable resin (henceforth "curable resin (X)" may be called). includes The non-polarization area|region 12 is the area|region in which the hardened|cured material of curable resin (X) was provided in the through-hole 22 surrounded by the polarization area|region 11 in planar view. The non-cell region 56 is provided so as to cut out all or a part of the plurality of first cells 51 , and is formed in the through hole 52 provided in the region corresponding to the through hole 22 described above with a curable resin (X). ) is the area where the cured product is provided. The through-hole 22 of the polarizer 10 and the through-hole 52 of the 1st reinforcing material 50 can be made into the same shape in planar view. The through hole 22 and the through hole 52 may communicate in the thickness direction of the polarization region 11, and the cured product of the curable resin (X) is passed through the communicating through holes 22 and 52. can be provided

The polarizer 10 which the polarizer composite 40 has has the non-polarization area|region 12, as shown to Fig.1 (a). Therefore, when applying the polarizer composite 40 to a display device such as a liquid crystal display device or an organic EL display device deployed on a smart phone or tablet type terminal, etc., it is made to correspond to the non-polarization region 12, a camera lens, an icon Alternatively, by arranging a printing portion such as a logo, it is possible to suppress a decrease in the sensitivity of the camera and a decrease in the designability.

In the polarizer composite 40, since the polarizer 10 has a non-polarization region 12, when applied to a display device, due to the contraction of the polarizer 10 according to a temperature change received, the periphery of the non-polarization region 12 It is thought that cracks are easy to generate|occur|produce. Moreover, since the thickness of the polarization area|region 11 of the polarizer 10 is as thin as 15 micrometers or less, when it receives an impact, it is thought that it is easy to generate|occur|produce a crack. In the polarizer composite 40, since the first reinforcing material 50 and the second reinforcing material 60 are provided on both surfaces of the polarizer 10, respectively, as described above, the occurrence of cracks when subjected to temperature change or impact, It is thought that it can suppress that a fine crack advances into a large crack.

In the polarizer composite 40 , the non-polarization region 12 and the non-cell region 56 contain a cured product of the curable resin (X), so that the through hole 22 of the polarizer 10 and the first reinforcing material 50 The through hole 52 can be made solid. Since the polarizer 10 of the polarizer composite 40 has a thickness of 15 µm or less, the cured product of the curable resin (X) is not provided in the non-polarization region 12 and the through hole 22 is hollow. , when applied to a display device, etc., there is a risk of causing problems such as cracks in the periphery of the through hole 22 due to the shrinkage of the polarizer according to the temperature change exposed. On the other hand, like the polarizer 10 of the polarizer composite 40, a cured product of the curable resin (X) is provided in the through hole 22 and the through hole 52, so that the non-polarization region 12 and the non-cell region ( 56) can be made solid, so that the occurrence of the above problem can be suppressed.

The thickness of the cured product of the curable resin (X) provided in the polarizer composite 40 may be the same as the total thickness of the thickness of the polarization region 11 and the thickness of the cell region 55 (FIG. 1(a)) , may be smaller than the total thickness (FIG. 2(a)), or may be larger than the total thickness (FIG. 2(b)). The cured product of the curable resin (X) provided in the polarizer composite 40 is provided to fill at least a part of the through hole 22 of the polarizer 10 and at least a part of the through hole 52 of the first reinforcing material 50 . good to have The cured product of the curable resin (X) is preferably provided so as to fill the entire through hole 22 of the polarizer 10 , and penetrates the entire through hole 22 of the polarizer 10 and the first reinforcing material 50 . More preferably, it is provided so as to fill the entire hole 52 .

The thickness of the hardened|cured material provided in the polarizer composite 40 is determined as follows. First, in the polarizer composite 40 , a first plane including the surface of the polarization region 11 of the polarizer 10 (the surface opposite to the first reinforcing material 50 side) and the first reinforcing material 50 A second plane including an open end face (an open end face on the opposite side to the polarizer 10 side) of the cell region 55 is assumed. Next, in the non-polarization area|region 12, in the 1st position and the 1st reinforcing material 50 side which are the positions where the shortest distance which the surface of the hardened|cured material and the 1st plane in the polarizer 10 side make is the largest. The second position where the shortest distance between the surface of the cured product and the second plane is the largest is determined. Then, the sum of the shortest distance (dm) at the first position, the shortest distance (dn) at the second position, and the distance (D) between the first plane and the second plane (dm+dn+D) , the thickness of the cured product provided in the polarizer composite 40 .

A method of determining the thickness when the thickness of the cured product provided in the non-polarization region 12 and the non-cell region 56 and the total thickness of the polarization region 11 and the cell region 55 is different is concretely based on FIG. 3 . Explain. 3 (a) and (b) are diagrams schematically showing an example of a cross section around the non-polarization region and the non-cell region of the polarizer composite, and a method of determining the thickness of the cured product provided in the non-polarization region and the non-cell region is explained It is an explanatory diagram for

As shown to Fig.3 (a), when hardened|cured material is provided in the non-polarization area|region 12 and the non-cell area|region 56, the polarizer 10 side of the 1st reinforcement material 50 is a non-cell area|region along the surface side of the opposite side. The straight line at (56) is assumed to be the first plane (11m). Among the straight lines in which the straight line connecting any point on the first plane 11m and any point on the surface of the cured product provided in the non-cell region 56 is the shortest distance, the length of the straight line (FIG. 3(a)) The position at which "dm") becomes the maximum is made into a 1st position. Next, as shown to Fig.3 (a), the straight line shown by the dashed-dotted line in the non-polarization area|region 12 along the surface side on the opposite side to the 1st reinforcing material 50 side of the polarizer 10 is a 2nd Assume a plane 11n. Among the straight lines connecting any point on the second plane 11n and any point on the surface of the cured product provided in the non-polarization region 12 to the shortest distance, the length of the straight line (Fig. 3(a)) ), the position at which "dn") becomes the maximum is set as the second position. Here, as shown to Fig.3 (a), the surface of the hardened|cured material provided in the non-polarization area|region 12 and the non-cell area|region 56 is the thickness direction of the polarizer composite 40. WHEREIN: 1st plane 11m And when it exists on the inner surface side (polarizer 10 and 1st reinforcing material 50 side) rather than the 2nd plane 11n, dm and dn shall represent as negative values. In addition, let D be the distance between the 1st plane 11m and the 2nd plane 11n. Then, the thickness of the hardened|cured material provided in the non-polarization area|region 12 and the non-cell area|region 56 shown to Fig.3 (a) can be determined as D+dm+dn (dm and dn are negative values).

Moreover, as shown to FIG.3(b), also when the hardened|cured material is provided in the non-polarization area|region 12 and the non-cell area|region 56 similarly to the above, the 1st plane 11m and the 2nd plane 11n By , the thickness of the cured product provided in the non-polarization region 12 and the non-cell region 56 can be determined. Specifically, first, among the straight lines connecting any point on the first plane 11m and any point on the surface of the cured product provided on the first reinforcing material 50 to the shortest distance, the length of the straight line ( The position when "dm") in FIG.3(b) becomes the maximum is made into a 1st position. Next, among the straight lines connecting any point on the second plane 11n and any point on the surface of the cured product provided in the non-polarization region 12 to the shortest distance, the length of the straight line (in FIG. 3 ) In (b), the position when "dn") becomes the maximum is made into a 2nd position. Here, as shown in FIG.3(b), the surface of the hardened|cured material provided in the non-polarization area|region 12 and the non-cell area|region 56 is the thickness direction of the polarizer composite 40. WHEREIN: 1st plane 11m And when it exists on the outer surface side (the side opposite to the polarizer 10 and the 1st reinforcing material 50) rather than the 2nd plane 11n, dm and dn shall represent as positive values. Then, the thickness of the hardened|cured material provided in the non-polarization area|region 12 and the non-cell area|region 56 shown to FIG.3(b) can be determined as D+dm+dn (dm and dn are positive values).

In the polarizer composite 40 shown in FIG. 2A , the second reinforcing material 60 enters the through hole 22 of the polarizer 10 and is a cured product of the curable resin (X) in the through hole 22 . can be provided on the table. In the polarizer composite 40 shown in FIG. 2B , the second reinforcing material 60 may be provided on the surface of the cured product of the curable resin X provided to protrude from the through hole 22 of the polarizer 10 . have.

The first reinforcing material 50 and the second reinforcing material 60 included in the polarizer composite 40 may have the same shape and size as the first cell 51 and the second cell 61, respectively, and may have the same shape and size. At least one of them may be different from each other. The opening of the first cell 51 of the first reinforcing material 50 provided in the polarizer 10 and the opening of the second cell 61 of the second reinforcing material 60 are arranged to overlap each other in a plan view, Although there may be, it is preferable to arrange|position so that it may shift|deviate from each other.

The polarizer composite 40 is applied to a display device or the like in a state in which the polarizer 10, the first reinforcing material 50, and the second reinforcing material 60 are provided. If the inner space of the first cell 51 of the first reinforcing material 50 and the second cell 61 of the second reinforcing material 60 are common, the cell partition wall 53 and the inner space of the first cell 51 are Visibility of the display device may decrease due to a difference in refractive index and a difference in refractive indices of the inner space of the cell partition wall 63 and the second cell 61 . Therefore, in the inner space of the first cell 51 of the first reinforcing material 50 in the polarizer composite 40 and the inner space of the second cell 61 of the second reinforcing material 60, the translucent filler is It is preferable to be provided. In the first reinforcing material 50 and the second reinforcing material 60 of the polarizer composite 40, a gap is provided between the plurality of first cells 51 or between the plurality of second cells 61 as will be described later. When there is, it is preferable that a light-transmitting filler is also provided in this gap|interval.

In the present specification, light transmittance refers to a property (transmittance) that transmits 80% or more of visible light in a wavelength range of 400 nm to 700 nm, preferably transmits 85% or more, more preferably transmits 90% or more, 92 % or more is more preferable. The definition of "transmittance" below and the preferable range of the transmittance|permeability with respect to visible light are also the same as the above.

The polarizer composite 40 may be a sheet body, or an elongate body having a length to be wound into a roll shape at the time of storage or transport, etc. may be sufficient as it. The planar shape and size of the polarizer composite 40 are not particularly limited.

(polarization area)

The polarization region 11 of the polarizer 10 preferably exhibits absorption dichroism in the wavelength range of 380 nm to 780 nm. The polarizer 10 has a property of absorbing linearly polarized light having an oscillation plane parallel to its absorption axis and transmitting linearly polarized light having an oscillation plane perpendicular to the absorption axis (parallel to the transmission axis). It can be obtained by area (11).

The polarization region 11 is, for example, in a hydrophilic polymer film such as a polyvinyl alcohol-based film, a partially formalized polyvinyl alcohol-based film, or an ethylene/vinyl acetate copolymer-based partially saponified film, and a dichroic substance such as iodine or a dichroic dye. This adsorption/orientation; What the dichroic substance adsorbed and orientated to the thing which orientated the polyene-type oriented film or liquid crystal compound, such as a dehydration-treated product of polyvinyl alcohol and a dehydrochloric acid-treated product of polyvinyl chloride; etc. can be used. Especially, it is preferable to use the thing obtained by dyeing a polyvinyl alcohol-type film with iodine and uniaxially stretching as a thing excellent in an optical characteristic.

First, the manufacturing method of the thing obtained by dyeing|staining the polyvinyl alcohol-type film used as the preferable polarization area|region 11 with iodine and uniaxially stretching is demonstrated briefly.

Dyeing with iodine is performed by, for example, immersing a polyvinyl alcohol-based film in an aqueous iodine solution. It is preferable that the draw ratio of uniaxial stretching is 3 to 7 times. Extending|stretching may be performed after a dyeing process, and may be performed, dyeing|staining. Moreover, you may dye|dye after extending|stretching.

A swelling process, a crosslinking process, a washing process, a drying process, etc. are given to a polyvinyl alcohol-type film as needed. For example, by immersing the polyvinyl alcohol-based film in water and washing with water before dyeing, it is possible to not only wash dirt and anti-blocking agents on the surface of the polyvinyl alcohol-based film, but also swell the polyvinyl alcohol-based film to prevent staining, etc. can do.

Stretching treatment, dyeing treatment, crosslinking treatment (boric acid treatment), water washing treatment, and drying treatment of the polyvinyl alcohol-based resin film may be performed according to, for example, the method described in JP 2012-159778 A . In the method described in this document, the polyvinyl alcohol-type resin layer used as the polarization area|region 11 is formed by coating of the polyvinyl alcohol-type resin to a base film. At this time, the used base film can also be used as the 1st support layer 25 mentioned later.

Next, the polarization region 11 formed by adsorbing and aligning a dichroic dye to a liquid crystal compound is briefly described. As the polarization region 11 in this case, for example, Japanese Patent Application Laid-Open No. 2013-37353, Japanese Patent Application Laid-Open No. 2013-33249, Japanese Patent Application Laid-Open No. 2016-170368, and Japanese Patent Application Laid-Open No. 2017-83843 As described, in the cured film in which the liquid crystal compound is superposed, a dichroic dye may be oriented. As a dichroic dye, what has absorption within the range of wavelength 380-800 nm can be used, It is preferable to use organic dye. As a dichroic dye, an azo compound is mentioned, for example. A liquid crystal compound is a liquid crystal compound which can superpose|polymerize with orientation, and may have a polymeric group in a molecule|numerator. The cured film in which such a liquid crystal compound superposed|polymerized may be formed on the base film, and in that case, the said base film can also be used as the 1st support layer 25 mentioned later.

After making it above and producing the polarizing film used for the polarization area|region 11, it is also preferable to form the non-polarization area|region 12 by a drilling process, and to form the polarizer 10. In this specification, the polarizing film formed only with such a polarization area|region 11 may be called the raw material polarizer 20.

The visibility correction polarization degree Py of the polarization region 11 is preferably 80% or more, more preferably 90% or more, still more preferably 95% or more, and particularly preferably 99% or more. The single transmittance Ts of the polarization region 11 is usually less than 50%, and may be 46% or less. The single transmittance (Ts) of the polarization region 11 is preferably 39% or more, more preferably 39.5% or more, still more preferably 40% or more, and particularly preferably 40.5% or more.

The single transmittance (Ts) is the Y value which measured based on the 2 degree field of view (C light source) of JIS Z8701, and performed the visibility correction|amendment. The visibility corrected polarization degree (Py) can be measured using, for example, an ultraviolet visible spectrophotometer (manufactured by Nippon Bunko Co., Ltd., product name: V7100), and the parallel transmittance (Tp) and orthogonal transmittance (Tc) to which the visibility correction was performed. Based on , it is calculated|required by the following formula.

Py[%]={(Tp-Tc)/(Tp+Tc)} ^1/2 × 100

The thickness of the polarization region 11 is 15 µm or less, and may be 13 µm or less, may be 10 µm or less, may be 8 µm or less, may be 5 µm or less, and is usually 1 µm or more. When the thickness of the polarization area|region 11 exceeds the said range, workability|operativity for providing the hardened|cured material of the active energy ray-curable resin (X) containing curable resin (X) mentioned later in the non-polarization area|region 12 will fall. easy to do. Further, when the polarization region 11 is less than the above range, it becomes difficult to obtain desired optical properties. The thickness of the polarization region 11 can be measured using, for example, a contact-type film thickness measuring device (MS-5C, manufactured by Nikon Corporation).

(non-polarization area)

Generally, "non-polarization" refers to light having no observable regularity in an electric field component. In other words, unpolarized light is random light in which an excellent specific polarization state is not observed. In addition, "partially polarized light" refers to light in an intermediate state between polarized light and non-polarized light, and refers to light in which at least one of linearly polarized light, circularly polarized light, and elliptically polarized light and non-polarized light are mixed. The non-polarization area|region 12 in the polarizer 10 means that the light (transmission light) which permeate|transmits the said non-polarization area|region 12 becomes non-polarization|polarized-light or partially polarized light. In particular, a non-polarization region in which transmitted light is non-polarization is preferable.

The non-polarization region 12 of the polarizer 10 is a region surrounded by the polarization region 11 in plan view. The non-polarization area|region 12 contains the hardened|cured material of curable resin (X). The non-polarization region 12 is a through hole provided in the polarizer (raw material polarizer 20) formed only in the polarization region 11. A cured product of an active energy ray-curable resin composition containing a curable resin (X) described later is provided. it is preferable The non-polarization region 12 has light-transmitting properties.

When the non-polarization area|region 12 of the polarizer 10 has translucency, optical transparency can be ensured in the non-polarization area|region 12. Thereby, when applying the polarizer composite 40 to a display device, by making it correspond to the non-polarization area|region 12, and arranging printing parts, such as a camera lens, an icon, or a logo, the fall of the sensitivity of a camera and the fall of designability are suppressed. can do.

Although the planar shape of the non-polarization area|region 12 is not specifically limited, Circle; oval; Jang Won-Hyeong; polygons such as triangles or squares; It can be set as a polygonal ring polygon etc. in which at least one angle of a polygon became a square ring (shape having R).

It is preferable that the diameter of the non-polarization area|region 12 is 0.5 mm or more, 1 mm or more may be sufficient as it, 2 mm or more may be sufficient, and 3 mm or more may be sufficient as it. It is preferable that the diameter of the non-polarization area|region 12 is 20 mm or less, 15 mm or less may be sufficient, 10 mm or less may be sufficient, and 7 mm or less may be sufficient as it. The diameter of the non-polarization area|region 12 means the length in the longest straight line among the straight lines which connect arbitrary two points of the outer periphery of the said non-polarization area|region 12.

The thickness of the hardened|cured material of curable resin (X) provided in the non-polarization area|region 12 may be the same as the thickness of the polarization area|region 11, and may be smaller than the thickness of the polarization area|region 11, The thickness of the polarization area|region 11 may be bigger than As mentioned above, it is preferable to provide so that the hardened|cured material of curable resin (X) provided in the non-polarization area|region 12 may fill the through hole 22 whole.

What is necessary is just to perform the thickness of the hardened|cured material provided in the non-polarization area|region 12 according to the measuring method of the thickness of the hardened|cured material provided in the polarizer composite 40 demonstrated above. Specifically, in the measurement method, the first plane is the surface of the polarization region 11 of the polarizer 10 (the surface on the side of the first reinforcing material 50 ), and the thickness of the cured product of the curable resin (X) It is good to decide

(cell region of the first stiffener)

The cell region 55 is a region in which the first cells 51 of the first reinforcing material 50 exist. As shown in FIG. 1B , the first cell 51 has a hollow columnar (tubular) structure surrounded by cell partition walls 53 that partition the first cell 51, and has a columnar structure. Both ends in the axial direction are open end faces. The first cell 51 has an open end face, a first open end face disposed on a side relatively close to the polarizer 10 of the polarizer complex 40, and a second aperture disposed on a relatively far side. has an end face. In the cell region 55, at least one of the first open end face and the second open end face may be arranged to face the polarizer 10, and both the first open end face and the second open end face are It is preferable that they are arranged so as to face the polarizer 10 .

The shape of the opening of the first cell 51 of the cell region 55 is not particularly limited, but is preferably a polygonal shape, a circular shape, or an elliptical shape. The shape of the opening of the first open end face and the shape of the opening of the second open end face are preferably the same shape of the same size, but may have different shapes or may have different sizes as the same shape. In addition, the shapes of the openings of the plurality of first cells 51 in the cell region 55 may be the same as or different from each other.

The plurality of first cells 51 included in the cell region 55 are preferably arranged so that the openings of the first cells 51 are adjacent to each other in a plan view of the end face of the opening. The plurality of first cells 51 have a first cell 51 in plan view of an end surface of the opening, for example, as in the case where the opening of the first cell 51 shown in FIG. 1B has a hexagonal shape or the like. These may be arranged so that they are mutually arranged without a gap. Alternatively, the plurality of first cells 51 have cell partition walls 53 of the plurality of first cells 51 as in the case where the opening of the first cells 51 has a circular shape or the like when viewed in plan view of the end face of the opening. ) may be in contact with each other, and may be arranged so as to have a gap between the plurality of first cells 51 .

The cell region 55 of the first reinforcing material 50 has, for example, a hexagonal shape of an opening in either of the first open end face and the second open end face, as shown in Fig. 1B, and the polarizer composite ( 40), it is preferable to have a honeycomb structure in which the plurality of first cells 51 are arranged so that the openings are adjacent to each other and arranged without gaps.

Although the size of the opening of the first cell 51 is not particularly limited, it is preferable to have a diameter smaller than the diameter of the non-polarization region 12 . The diameter of the first cell 51 is preferably 3 mm or less, may be 2 mm or less, may be 1 mm or less, and is usually 0.1 mm or more, and may be 0.5 mm or more. The diameter of the opening of the first cell 51 refers to the length of the longest straight line connecting two arbitrary points on the outer periphery of the opening.

The height of the first cell 51 (the length in the direction perpendicular to the opening end face of the first cell 51) is usually 0.1 µm or more, may be 0.5 µm or more, may be 1 µm or more, or may be 3 µm or more. Also, usually 15 µm or less, 13 µm or less may be sufficient, and 10 µm or less may be sufficient.

It is preferable that the cell partition walls 53 dividing the first cells 51 of the cell region 55 have light-transmitting properties.

The line width of the cell partition walls 53 of the cell region 55 is, for example, 0.05 mm or more, 0.1 mm or more, 0.5 mm or more, 1 mm or more, and is usually 5 mm or less, and 3 mm or less. it's good too

The cell partition walls 53 of the cell region 55 can be formed of, for example, a resin material or an inorganic oxide, and are preferably formed of a resin material. Curable resins, such as a thermoplastic resin, a thermosetting resin, and an active energy ray-curable resin, etc. are mentioned as a resin material. As a resin material, For example, said curable resin (X); The thermoplastic resin etc. illustrated as a thermoplastic resin used for the said filler are mentioned. Silicon oxide (SiO2), aluminum oxide _, etc. are mentioned as an inorganic oxide.

(non-cell region of the first stiffener)

The non-cell region 56 is a region in which the first cells 51 of the first reinforcing material 50 do not exist, and as described above, the cell partition walls 53 and the cell partition walls ( 53) is an area in which there is no hollow columnar (tubular) space surrounded by. The non-cell region 56 is provided so as to cut out all or a part of the plurality of first cells 51 , and has a through hole 52 provided in a region corresponding to the through hole 22 of the polarizer 10 . The non-cell region 56 may include a cured product of the curable resin (X) in the through hole 52 .

The planar shape and diameter of the non-cell area|region 56 are not specifically limited, The shape and diameter illustrated as a planar shape of the non-polarization area|region 12 are mentioned. It is preferable that the planar shape and diameter of the non-cell area|region 56 are the same as the planar shape and diameter of the non-polarization area|region 12.

(Second reinforcing material)

The second cell 61 included in the second reinforcing material 60 has a hollow columnar shape (cylindrical shape) surrounded by cell partition walls 63 that partition the second cell 61 as shown in FIG. 1C . It has a structure, and the axial direction both ends of the columnar structure have an open end surface. The second cell 61 has an open end face, a first 'open end face disposed on a side having a relatively close distance from the polarizer 10 of the polarizer complex 40, and a second open end face disposed on a relatively far side. ' has an open end face. As for the 2nd reinforcing material 60, at least one of a 1st' open end surface and a 2nd' open end surface should just be arranged so that it may oppose the polarizer 10, The 1st' open end surface and the 2nd' open end It is preferable that both of the negative surfaces are arranged so as to face the polarizer 10 .

Examples of the shape of the opening of the second cell 61 included in the second reinforcing material 60 include those exemplified as the shape of the opening of the first cell 51 . The shape of the opening of the first 'opening end face and the shape of the opening of the second 'opening end face are preferably the same shape of the same size, but may have different shapes or may have different sizes as the same shape. In addition, the shapes of the openings of the plurality of second cells 61 may be the same as or different from each other.

It is preferable that the plurality of second cells 61 included in the second reinforcing material 60 be arranged so that the openings of the respective second cells 61 are adjacent to each other in a plan view of the opening end face. The plurality of second cells 61 have a shape of the opening of the second cell 61 shown in Fig. 1(c) in a plan view of the end surface of the opening, such as a hexagon. These may be arranged so that they are mutually arranged without a gap. Alternatively, the plurality of second cells 61 has cell partition walls 63 of the plurality of second cells 61 as in the case where the opening of the second cell 61 has a circular shape or the like when viewed from the end face of the opening in plan view. ) may be in contact with each other, and may be arranged so as to have a gap between the plurality of second cells 61 .

As for the 2nd reinforcing material 60, the shape of the opening is hexagonal in either of the 1st 'opening end surface and the 2nd' opening end surface, for example, as shown in FIG.1(c), The surface of the polarizer composite 40 In direction, it is preferable to have a honeycomb structure in which a plurality of second cells 62 are arranged so that the openings are adjacent to each other and arranged without gaps.

The size and height of the opening of the second cell 62 may be, for example, the size and height exemplified for the opening of the first cell 51 . The light transmittance, line width, and material of the cell barrier ribs 63 delimiting the second cells 61 of the second reinforcing material 60 are, for example, the light transmittance exemplified for the cell barrier ribs 53 delimiting the first cells 51 . , line width and material.

(Active energy ray-curable resin composition (curable resin composition))

As described above, the non-polarization region 12 and the non-cell region 56 in the polarizer composite 40 are regions in which a cured product of an active energy ray-curable resin (curable resin (X)) is provided, preferably the above It is formed of the active energy ray-curable resin composition (henceforth "curable resin composition" may be called) containing curable resin (X). Curable resin (X) contained in curable resin composition hardens|cures by irradiation of active energy rays, such as an ultraviolet-ray, a visible light, an electron beam, and X-ray. It is preferable that curable resin (X) is ultraviolet curable resin hardened|cured by irradiation of an ultraviolet-ray. An active energy ray hardening-type adhesive agent may be sufficient as curable resin composition containing curable resin (X), and in this case, it is more preferable that it is an ultraviolet curable adhesive agent.

It is preferable that curable resin composition is a solvent-free type. The solvent-free type means that a solvent is not actively added, and specifically, the solvent-free type curable resin composition has a solvent content of 5 weight percent with respect to 100 weight % of the curable resin (X) contained in the curable resin composition. % or less.

It is preferable that curable resin (X) contains an epoxy compound. An epoxy compound is one or more in a molecule|numerator, Preferably it is a compound which has two or more epoxy groups. As an epoxy compound, an alicyclic epoxy compound, an aliphatic epoxy compound, a hydrogenated epoxy compound (glycidyl ether of the polyol which has an alicyclic ring), etc. are mentioned. One type may be sufficient as the epoxy compound contained in curable resin (X), and 2 or more types may be sufficient as it.

It is preferable that content of an epoxy compound is 40 weight% or more with respect to 100 weight% of curable resin (X), It is more preferable that it is 50 weight% or more, It is still more preferable that it is 60 weight% or more. Content of an epoxy compound may just be 100 weight% or less with respect to 100 weight% of curable resin (X), 90 weight% or less may be sufficient, and 80 weight% or less may be sufficient and 75 weight% or less may be sufficient.

The epoxy equivalent of an epoxy compound is 40-3000 g/equivalent normally, Preferably it exists in the range of 50-1500 g/equivalent. When an epoxy equivalent exceeds 3000 g/equivalent, compatibility with the other component contained in curable resin (X) may fall.

It is preferable that the epoxy compound contained in curable resin (X) contains an alicyclic epoxy compound. An alicyclic epoxy compound is an epoxy compound which has one or more epoxy groups couple|bonded with the alicyclic in a molecule|numerator. "The epoxy group couple|bonded with the alicyclic" means the oxygen atom -O- of bridge|crosslinking in the structure shown by the following formula. In the following formula, m is an integer of 2 to 5.

The compound in which the group of the form in which one or several hydrogen atoms were removed in (CH2) _m in the said formula _couple |bonded with the other chemical structure can become an alicyclic epoxy compound. (CH ₂ ) One or more hydrogen atoms in _m may be suitably substituted with a linear alkyl group such as a methyl group or an ethyl group. Among the alicyclic epoxy compounds, the epoxy compound which has an oxabicyclohexane ring (the thing of m=3 in the said formula) and the oxabicycloheptane ring (the thing of m=4 in the said formula) is a polarizer (10) Provides excellent adhesion between the polarization region 11 and the cell region 55 of the first reinforcing material 50, and the cured product of the curable resin (X) forming the non-polarization region 12 and the non-cell region 56 Therefore, it is preferably used. Although the alicyclic epoxy compound used preferably is specifically illustrated below, it is not limited to these compounds.

[a] Epoxycyclohexylmethyl epoxycyclohexanecarboxylates represented by the following formula (IV):

[In formula (IV), R ⁸ and R ⁹ each independently represent a hydrogen atom or a linear alkyl group having 1 to 5 carbon atoms.]

[b] Epoxycyclohexanecarboxylates of alkanediol represented by the following formula (V):

[In formula (V), R ¹⁰ and R ¹¹ each independently represent a hydrogen atom or a linear alkyl group having 1 to 5 carbon atoms, and n represents an integer of 2 to 20.]

[c] Epoxycyclohexylmethyl esters of dicarboxylic acids represented by the following formula (VI):

[In formula (VI), R ¹² and R ¹³ each independently represent a hydrogen atom or a linear alkyl group having 1 to 5 carbon atoms, and p represents an integer of 2 to 20.]

[d] Epoxycyclohexylmethyl ethers of polyethylene glycol represented by the following formula (VII):

[In formula (VII), R ¹⁴ and R ¹⁵ each independently represent a hydrogen atom or a linear alkyl group having 1 to 5 carbon atoms, and q represents an integer of 2 to 10.]

[e] Epoxycyclohexylmethyl ethers of alkanediol represented by the following formula (VIII):

[In formula (VIII), R ¹⁶ and R ¹⁷ each independently represent a hydrogen atom or a linear alkyl group having 1 to 5 carbon atoms, and r represents an integer of 2 to 20.]

[f] a diepoxytrispiro compound represented by the following formula (IX):

[In formula (IX), R ¹⁸ and R ¹⁹ each independently represent a hydrogen atom or a linear alkyl group having 1 to 5 carbon atoms.]

[g] a diepoxy monospiro compound represented by the following formula (X):

[In formula (X), R ²⁰ and R ²¹ each independently represent a hydrogen atom or a linear alkyl group having 1 to 5 carbon atoms.]

[h] Vinylcyclohexene diepoxides represented by the following formula (XI):

[In formula (XI), R ²² represents a hydrogen atom or a linear alkyl group having 1 to 5 carbon atoms.]

[i] Epoxycyclopentyl ethers represented by the following formula (XII):

[In formula (XII), R ²³ and R ²⁴ each independently represent a hydrogen atom or a linear alkyl group having 1 to 5 carbon atoms.]

[j] diepoxytricyclodecanes represented by the following formula (XIII):

[In formula (XIII), R ²⁵ represents a hydrogen atom or a linear alkyl group having 1 to 5 carbon atoms.]

As an aliphatic epoxy compound, the polyglycidyl ether of an aliphatic polyhydric alcohol or its alkylene oxide adduct is mentioned. More specifically, diglycidyl ether of 1,4-butanediol; diglycidyl ether of 1,6-hexanediol; triglycidyl ether of glycerin; triglycidyl ether of trimethylolpropane; diglycidyl ether of polyethylene glycol; diglycidyl ether of propylene glycol; and polyglycidyl ethers of polyether polyols obtained by adding one or more alkylene oxides (ethylene oxide or propylene oxide) to an aliphatic polyhydric alcohol such as ethylene glycol, propylene glycol or glycerin.

A hydrogenated epoxy compound is obtained by making epichlorohydrin react with the alicyclic polyol obtained by performing a hydrogenation reaction on the aromatic ring of an aromatic polyol. As an aromatic polyol, Bisphenol type compounds, such as bisphenol A, bisphenol F, and bisphenol S; novolak resins such as phenol novolak resin, cresol novolak resin, and hydroxybenzaldehyde phenol novolak resin; and polyfunctional compounds such as tetrahydroxydiphenylmethane, tetrahydroxybenzophenone and polyvinylphenol. As a preferable thing among a hydrogenation epoxy compound, the diglycidyl ether of hydrogenated bisphenol A is mentioned.

Curable resin (X) may contain a (meth)acrylic-type compound etc. with active energy ray-curable compounds, such as an epoxy compound. Sclerosis which forms the polarization region 11 of the polarizer 10, the cell region 55 of the 1st reinforcing material 50, the non-polarization region 12, and the non-cell region 56 by using a (meth)acrylic-type compound together The effect of increasing the adhesiveness between the cured products of the resin (X), the hardness and the mechanical strength of the cured product of the curable resin (X) can be expected, and the adjustment of the viscosity and the curing rate of the curable resin (X) can be made more easily be able to do "(meth)acryl" means at least one selected from the group which consists of acryl and methacryl.

It is preferable that curable resin composition containing curable resin (X) contains a polymerization initiator. As a polymerization initiator, cationic polymerization initiators, such as a photocationic polymerization agent, and a radical polymerization initiator are mentioned. The photocationic polymerization initiator generates cationic species or Lewis acid by irradiation with active energy rays such as visible rays, ultraviolet rays, X-rays, and electron beams, and initiates the polymerization reaction of the epoxy group. As described above, the curable resin (X) is preferably an ultraviolet curable resin that is cured by irradiation with ultraviolet rays, and the curable resin (X) preferably contains an alicyclic epoxy compound. Therefore, the polymerization initiator in this case is , it is preferable to generate a cationic species or a Lewis acid by irradiation with ultraviolet rays.

The curable resin composition further contains additives such as a photosensitizer, a polymerization accelerator, an ion trapping agent, an antioxidant, a chain transfer agent, a tackifier, a thermoplastic resin, a filler, a flow regulator, a plasticizer, an antifoaming agent, an antistatic agent, and a leveling agent can do.

(filling)

The fillers that may be provided in the first reinforcing material 50 and the second reinforcing material 60 have light-transmitting properties, and the inner space of the first cell 51 of the first reinforcing material 50 and the second of the second reinforcing material 60 . It is not particularly limited as long as it can fill the inner space of the cell 61 . The filler is preferably a material different from the material constituting the cell partition walls 53 of the first reinforcing material 50 and the cell partition walls 63 of the second reinforcing material 60, and preferably contains a resin material. As said resin material, 1 or more types chosen from the group which consists of curable resins, such as a thermoplastic resin, a thermosetting resin, and an active energy ray-curable resin, etc. are mentioned, for example, An adhesive or an adhesive agent may be sufficient.

Examples of the thermoplastic resin include polyolefin-based resins such as chain polyolefin-based resins (polypropylene-based resins, etc.) and cyclic polyolefin-based resins (norbornene-based resins, etc.); Cellulose ester-type resin, such as a triacetyl cellulose and a diacetyl cellulose; polyester-based resins such as polyethylene terephthalate, polyethylene naphthalate, and polybutylene terephthalate; polycarbonate-based resin; (meth)acrylic resin; polystyrene-based resin; polyether-based resin; polyurethane-based resin; polyamide-based resin; polyimide-based resin; A fluorine-type resin etc. are mentioned.

As curable resin, said curable resin (X) is mentioned, for example.

An adhesive expresses adhesiveness by adhering itself to a to-be-adhered body, and what is called a so-called pressure-sensitive adhesive. Examples of the pressure-sensitive adhesive include those containing, as a main component, a polymer such as a (meth)acrylic polymer, a silicone polymer, a polyester polymer, a polyurethane polymer, a polyether polymer, or a rubber polymer. In this specification, a main component means the component containing 50 mass % or more in the total solid of an adhesive. An active energy ray hardening type or a thermosetting type may be sufficient as an adhesive, and active energy ray irradiation or heating may adjust a crosslinking degree and adhesive force.

The adhesive contains a curable resin component, and is an adhesive other than a pressure-sensitive adhesive (adhesive). Examples of the adhesive include a water-based adhesive in which a curable resin component is dissolved or dispersed in water, an active energy ray-curable adhesive containing an active energy ray-curable compound, and a thermosetting adhesive.

As the adhesive, a water-based adhesive commonly used in the technical field of polarizing plates may be used. Examples of the resin component contained in the water-based adhesive include polyvinyl alcohol-based resins and urethane-based resins. As an active energy ray-curable adhesive agent, the composition hardened|cured by irradiation of active energy rays, such as an ultraviolet-ray, a visible light, an electron beam, and X-rays, is mentioned. As an active energy ray-curable adhesive agent, you may use the curable resin composition containing said curable resin (X). Examples of the thermosetting adhesive include those containing, as a main component, an epoxy resin, a silicone resin, a phenol resin, a melamine resin, and the like.

(Method for producing polarizer complex)

4 and 5 are schematic cross-sectional views schematically showing an example of a manufacturing method of the polarizer composite 40 (FIG. 1A). In Figs. 4 and 5, the case of obtaining the polarizer composite 40 shown in Fig. 1 (a) is shown, but the polarizer composite 40 shown in Figs. 2 (a) and (b) is also described below. It can be manufactured by a method. The polarizer composite 40 has, for example, the same visibility corrected polarization degree Py as a whole, and includes only the cell region 55 on one side of the raw polarizer 20 that does not have the non-polarization region 12, and includes only the cell region 55. It can manufacture using what formed the structure 58 for reinforcing material formation (Hereinafter, it may be called "structure 58") which does not have the area|region 56. Since the raw polarizer 20 is formed only in the polarization region 11 of the polarizer 10 described above, the thickness of the raw polarizer 20 is 15 μm or less, which is the same thickness as the polarization region 11 of the polarizer 10. it is preferable Since the structure 58 becomes the cell region 55 of the first reinforcement member 50 described above, it is preferable to have the same thickness as the cell region 55 of the first reinforcement member 50 .

The polarizer composite 40 may be manufactured, for example, by the following process. First, as shown in FIG. 4( a ), on one surface of the raw material polarizer 20 , after providing the first support layer 25 so as to be peelable with respect to the raw material polarizer 20 , the raw material polarizer 20 The structure 58 is formed on the other surface, and the 1st laminated body 31 is prepared. The structure 58 can be obtained by, for example, forming the cell partition walls 53 dividing the first cell 51 on the surface of the raw material polarizer 20 using a resin material or an inorganic oxide.

Although it does not specifically limit as a method of forming the cell partition 53 using a resin material, For example, Printing methods, such as inkjet printing, screen printing, gravure printing; photolithography; The coating method using a nozzle, a die|dye, etc. are mentioned. In the above method, a resin composition in which a resin material is mixed with a solvent, an additive, or the like may be used. As an additive, a leveling agent, antioxidant, a plasticizer, a tackifier, organic or inorganic filler, a pigment, antioxidant, a ultraviolet absorber, antioxidant, etc. are mentioned. The cell partition walls 53 may be formed by subjecting the printed or applied resin composition to a treatment for solidification or curing, if necessary.

Although it does not specifically limit as a method of forming the cell partition 53 using an inorganic oxide, For example, it can form by vapor-depositing an inorganic oxide.

With respect to the prepared first laminate 31, a through hole 32 penetrating in the lamination direction is formed by punching, clipping, cutting, or laser cutting (FIG. 4(b)). Thereby, on the first support layer 25 in which the through-holes are formed, the punched polarizer 21 in which the through-holes 22 are formed in the raw material polarizer 20 and the punched structure in which the through-holes 52 are formed in the structure 58 ( 59) is formed. Next, after providing the second support layer 26 so as to be peelable on the side of the perforated structure 59 of the first laminate 31 in which the through hole 32 is formed (FIG. 4(c)), the first support layer 25 ) is peeled off (FIG. 4(d)). Thereby, the 2nd laminated body 33 in which the 2nd support layer 26, the perforation structure 59, and the perforation polarizer 21 were laminated|stacked in this order is obtained (FIG.4(d)). The second support layer 26 is provided so as to block one side of the through hole 52 of the perforated structure 59 .

Next, the through hole 22 of the perforated polarizer 21 of the second laminate 33 and the through hole 52 of the perforated structure 59 are filled with a curable resin composition containing the curable resin (X), By irradiating an active energy ray, the curable resin (X) in the through-holes 22 and 52 is hardened. Thereby, the hardened|cured material of curable resin (X) is formed in the through-hole 22 of the drilling polarizer 21, and the through-hole 52 of the drilling structure 59, and on the 2nd support layer 26, the 1st The reinforcement 50 and the polarizer 10 are formed (FIG. 5(a)). In the polarizer 10 shown in Fig. 5(a), the region other than the through hole 22 of the drilling polarizer 21 becomes the polarization region 11, and the region of the through hole 22 in which the cured product is provided is not It becomes the polarization region 12 . The first reinforcing material 50 shown in FIG. 5A is provided on one surface side of the polarizer 10, and a region other than the through hole 52 of the perforated structure 59 becomes the cell region 55, , the region of the through hole 52 provided with the cured product becomes the non-cell region 56 .

Next, on the side opposite to the first reinforcing material 50 side of the polarizer 10, a second reinforcing material 60 is formed, and a polarizer composite 40 is formed on the second supporting layer 26 (( in FIG. 5 ) b)). For the second reinforcing material 60 , the cell partition walls 63 may be formed by, for example, the method described in the method for forming the cell partition walls 53 of the structure 58 . After forming the second reinforcing material 60 , the second supporting layer 26 may be peeled off.

It does not specifically limit as a method of filling the through hole 22 of the perforated polarizer 21 and the through hole 52 of the perforated structure 59 with curable resin composition. For example, the curable resin composition may be injected into the through holes 22 and 52 of the second laminate 33 using a dispenser or dispenser, or the surface of the perforated polarizer 21 of the second laminate 33 . The through holes 22 and 52 may be filled with the curable resin composition while coating the curable resin composition thereon. The cured product layer of the curable resin composition coated on the surface of the perforated polarizer 21 can be a protective layer to be described later. When coating curable resin composition, you may provide a base film so that the coating layer surface formed by coating may be covered. You may peel a base film after hardening of curable resin (X).

The support layer used at the time of manufacture of the raw material polarizer 20 mentioned later may be sufficient as the 1st support layer 25, and the said base film used when coating curable resin composition may be used for it. Alternatively, a peelable support layer bonded to the raw material polarizer 20 with a volatile liquid such as water may be sufficient, or a peelable adhesive sheet may be used with respect to the raw material polarizer 20 . The peelable support layer bonded to the perforated polarizer 21 with volatile liquids, such as water adhesion, may be sufficient as the 2nd support layer 26, and the adhesive sheet which can peel with respect to the perforated polarizer 21 may be sufficient as it.

As described above, in the polarizer composite 40 , since the thickness of the raw polarizer 20 is 15 µm or less, the depth of the through hole 22 provided in the perforated polarizer 21 can also be 15 µm or less. Since the height of the 1st cell 51 of the perforation structure 59 is also normally 15 micrometers or less, the depth of the through-hole 52 provided in the perforation structure 59 can also be made into 15 micrometers or less. Thereby, the curable resin composition is filled in the through-holes 22 of the perforated polarizer 21 and the through-holes 52 of the perforated structure 59, and the curable resin composition filled in the through-holes 22 and 52 is contained in Since the hardening process of curable resin (X) can be performed in a short time, the fall of workability|operativity can be suppressed.

In the manufacturing method of the polarizer composite 40, the through hole 32 is formed in the 1st laminated body 31 which has the structure 58, the raw material polarizer 20, and the 1st support layer 25 in this order. . The raw material polarizer 20 forms a region to be the non-polarization region 12 of the polarizer 10, and since the thickness is as thin as 15 µm or less, the through hole 22 is formed in the raw material polarizer 20. At this time, there is a possibility that a problem such as cracks occurring in the periphery of the through hole 22 may occur. In the method of manufacturing the polarizer composite 40, the structure 58 is provided in the raw material polarizer 20, and the raw material polarizer 20 is reinforced with the structure 58 to form the through hole 22, It is suppressed that cracks generate|occur|produce in the hole polarizer 21, and the polarizer 10 by which generation|occurrence|production of the crack was suppressed can be obtained.

(raw polarizer)

It is preferable that the raw material polarizer 20 does not significantly change in quality by the active energy ray irradiated in order to harden the curable resin (X) in the curable resin composition filled in the through hole 22. The raw material polarizer 20 is, for example, a film in which a dichroic dye is adsorbed and aligned on a polyvinyl alcohol-based resin film, or a dichroic dye is oriented in a cured layer of a polymerizable liquid crystal compound. It is the same as described in the above-mentioned polarization area|region 11.

(Structure (Structure) for Reinforcement Formation)

The structure 58 is a structure that includes only the cell area 55 and does not have the non-cell area 56 . The structure 58 can be obtained by forming the cell partition walls 53 dividing the first cell 51 using a resin material or an inorganic oxide as described above. As a material usable as a resin material and an inorganic oxide, and a method for forming the cell partition wall 53 using these materials, the materials and methods exemplified above can be given.

<Optical laminated body>

It is a schematic sectional drawing which shows typically an example of the optical laminated body of this embodiment. The optical laminate 45 shown in FIG. 6 has protective layers 17 and 18 on both surfaces of the polarizer composite 40 shown in FIG. 1(a). The optical laminate 45 may have the protective layer 17 (or 18) only on the single side|surface side of the polarizer composite 40. As shown in FIG. The polarizer composite 40 included in the optical laminate 45 may be the polarizer composite 40 shown in FIG. 2(a) or (b). The protective layers 17 and 18 can be provided on the polarizer composite 40 with a bonding layer such as an adhesive layer or an adhesive layer interposed therebetween. In this case, for example, a film-type protective layer may be laminated on the polarizer composite 40 via a bonding layer. The protective layers 17 and 18 may be provided so as to be in direct contact with the polarizer composite 40 without interposing a bonding layer. In this case, for example, a composition containing a resin material constituting the protective layers 17 and 18 is applied on the polarizer composite 40, and the protective layers 17 and 18 are formed by solidifying or curing the applied layer. can do.

When the optical laminate 45 is one in which the protective layers 18 and 17 are provided on the first reinforcing material 50 and the second reinforcing material 60 of the polarizer composite 40 with a bonding layer interposed therebetween, the first The inner space of the first cell 51 of the first reinforcing material 50 , the gap between the plurality of first cells 51 , the inner space of the second cell 61 of the second reinforcing material 60 , and the plurality of second cells It is preferable to provide a bonding layer so as to fill the gap between the (61) and the like to form the protective layers (18, 17).

When the optical laminate 45 is a thing in which the protective layers 18 and 17 are provided so that the 1st reinforcing material 50 and the 2nd reinforcing material 60 of the polarizer composite 40 may directly contact each other, respectively, it is a 1st reinforcing material (50) the inner space of the first cell 51, the gap between the plurality of first cells 51, the inner space of the second cell 61 of the second reinforcing material 60, and the plurality of second cells 61 ), it is preferable to form the protective layers 18 and 17 by providing a composition containing a resin material constituting the protective layers 18 and 17 so as to fill the gaps between the two.

In the optical laminate 45 , the protective layers 18 and 17 may be a cured product layer of the curable resin (X) provided directly on the first reinforcing material 50 and the second reinforcing material 60 , respectively. The curable resin (X) constituting the protective layers 18 and 17, which is the cured material layer, is not particularly limited as long as it is a resin that is cured by irradiation with active energy rays such as ultraviolet rays, visible light, electron beams, and X-rays. For example, as described above Curable resin (X) is mentioned. The protective layers 18 and 17 are curable containing the same curable resin (X) as the curable resin (X) constituting the cured product contained in the non-polarization region 12 and the non-cell region 56 of the polarizer 10 . The cured product layer of the resin composition may be used.

In order to manufacture the optical laminate 45, for example, by coating the curable resin composition on the side of the first reinforcing material 50 and the second reinforcing material 60 of the polarizer composite 40, and irradiating the curable resin ( X) is cured. Thereby, the protective layers 18 and 17 which are hardened|cured material layers of curable resin (X) may be respectively formed on the 1st reinforcing material 50 and the 2nd reinforcing material 60, and the optical laminated body 45 may be obtained. .

In the optical laminate 45 shown in FIG. 6 , the protective layers 17 and 18 may be one protective layer provided with a bonding layer interposed therebetween, and the other protective layer provided without the bonding layer interposed therebetween. good night. The protective layers 17 and 18 included in the optical laminate 45 may be the same as or different from each other.

When coating curable resin composition, you may provide a base film so that the coating layer surface formed by coating may be covered. In this case, the base film may be used as the protective layers 17 and 18 , and the cured material layer of the curable resin (X) may be used as a bonding layer for bonding the protective layers 17 and 18 together. You may peel a base film after hardening of curable resin (X).

(protective layer)

It is preferable that the protective layers 17 and 18 are a resin layer which can transmit light, and a resin film may be sufficient as it, and the coating layer formed by apply|coating the composition containing a resin material may be sufficient as it. The resin used for the resin layer is preferably a thermoplastic resin excellent in transparency, mechanical strength, thermal stability, moisture barrier properties, isotropy, stretchability, and the like. As a thermoplastic resin, the thermoplastic resin which comprises the base film which may be used for manufacture of the above-mentioned raw material polarizer 20 is mentioned. When the optical laminate 45 has the protective layers 17 and 18 on both surfaces, the resin composition of the protective layers 17 and 18 may be mutually the same, and may be mutually different.

The thickness of the protective layers 17 and 18 is usually 200 µm or less, preferably 150 µm or less, more preferably 100 µm or less, 80 µm or less, or 60 µm or less from the viewpoint of reducing the thickness. The thickness of the protective layers 17 and 18 may be usually 5 µm or more, 10 µm or more, or 20 µm or more. The protective layers 17 and 18 may or may not have a phase difference. When the optical laminate 45 has the protective layers 17 and 18 on both surfaces, the thickness of the protective layers 17 and 18 may be mutually the same, and may be mutually different.

(bonding layer)

A bonding layer is an adhesive layer or an adhesive bond layer. Examples of the pressure-sensitive adhesive for forming the pressure-sensitive adhesive layer and the adhesive for forming the adhesive layer include the pressure-sensitive adhesive and adhesive used for constituting the above-described filler.

<Laminate body having bonding layer for optical display element>

The polarizer composite 40 shown in FIGS. 1 and 2 and the optical laminate 45 shown in FIG. 6 are further optical display elements (liquid crystal panel, organic EL element) of display apparatuses, such as a liquid crystal display device and an organic electroluminescent display. You may have a bonding layer for optical display elements for bonding to ).

In the polarizer composite 40 and the optical laminate 45 , when the bonding layer for an optical display element is provided on the surface of the first reinforcing material 50 or the second reinforcing material 60 , the first reinforcing material 50 or As a filler provided in the second reinforcing material 60 , a material constituting the bonding layer for an optical display element is used to form the inner space of the first cell 51 of the first reinforcing material 50 or the second reinforcing material 60 . You may perform the filling of the filler into the internal space of 2 cells 61 etc., and formation of the bonding layer for optical display elements simultaneously.

10 polarizer, 11 polarization region, 11m first plane, 11n second plane, 12 non-polarization region, 17, 18 protective layer, 20 raw polarizer, 21 perforated polarizer, 22 through hole, 25 first support layer, 26 second support layer, 27 third support layer, 28 fourth support layer, 31 first laminate, 32 through hole, 33 second laminate, 34 third laminate, 35 fourth laminate, 36 through hole, 40, 41 polarizer composite, 45 optical laminate, 50 first reinforcement, 51 first cell, 52 through hole, 53 cell partition wall, 55 cell area, 56 non-cell area, 58 structure for forming reinforcement material, 59 perforated structure, 60 second reinforcement material, 61 second cell, 63 cell bulkhead.

Claims (12)

A polarizer composite comprising: a polarizer; a first reinforcing material provided on one surface side of the polarizer; and a second reinforcing material provided on the other surface side of the polarizer;
The polarizer has a polarization region having a thickness of 15 μm or less and a non-polarization region surrounded by the polarization region in plan view,
The first reinforcing material,
a plurality of first cells having an open end face, and each open end face is arranged to face the face of the polarizer;
a cell region in which the first cell is present and in a region corresponding to the polarization region; and a non-cell region in which the first cell is not present and in a region corresponding to the non-polarization region;
The second reinforcing material,
a plurality of second cells each having an open end face, and each open end face is arranged to face the face of the polarizer;
the second cell is present in at least a region corresponding to the non-polarization region;
The non-polarization region and the non-cell region include a cured product of an active energy ray-curable resin, and the cured product contained in the non-polarization region is provided in a through hole surrounded by the polarization region in plan view, a polarizer composite . The polarizer composite according to claim 1, wherein a thickness of the cured product is equal to a total thickness of a thickness of the polarization region and a thickness of the cell region. The polarizer composite according to claim 1, wherein a thickness of the cured product is smaller than a total thickness of a thickness of the polarization region and a thickness of the cell region. The polarizer composite according to claim 1, wherein a thickness of the cured product is greater than a total thickness of a thickness of the polarization region and a thickness of the cell region. The polarizer composite according to any one of claims 1 to 4, wherein the non-polarization region has light transmitting properties. The polarizer composite in any one of Claims 1-5 whose planar diameter diameter of the said non-polarization area|region is 0.5 mm or more and 20 mm or less. The polarizer composite according to any one of claims 1 to 6, wherein the active energy ray-curable resin contains an epoxy compound. The polarizer composite according to claim 7, wherein the epoxy compound includes an alicyclic epoxy compound. The polarizer composite according to any one of claims 1 to 8, wherein the shapes of the openings of the first cell and the second cell are each independently a polygonal shape, a circular shape, or an elliptical shape. The polarizer composite according to any one of claims 1 to 9, wherein a light-transmitting filler is further provided in the inner space of the first cell. The light-transmitting filler is further provided in the inner space of the said 2nd cell, The polarizer composite in any one of Claims 1-10. The optical laminated body which has a protective layer on the single side|surface side or both surfaces side of the polarizer composite in any one of Claims 1-11.

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