TW202120312A - Polarizer composite and optical laminate - Google Patents
Polarizer composite and optical laminate Download PDFInfo
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- TW202120312A TW202120312A TW109130767A TW109130767A TW202120312A TW 202120312 A TW202120312 A TW 202120312A TW 109130767 A TW109130767 A TW 109130767A TW 109130767 A TW109130767 A TW 109130767A TW 202120312 A TW202120312 A TW 202120312A
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- polarizer
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- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
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- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
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- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
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- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- G—PHYSICS
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- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
- G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
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- G—PHYSICS
- G02—OPTICS
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- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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- G—PHYSICS
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
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Abstract
Description
本發明係關於一種偏光片複合體及光學積層體。 The present invention relates to a polarizer composite body and an optical laminate.
偏光片係被廣泛使用來作為液晶顯示裝置或有機電致發光(EL)顯示裝置等顯示裝置中之偏光的供給元件、或偏光的檢測元件。具備偏光片的顯示裝置亦拓展至筆記型個人電腦或行動電話等行動機器,由於對顯示目的的多樣化、顯示分區的明確化、裝飾化等的要求,而期盼具有不同透射率之區域的偏光片。特別是於以智慧型手機或平板型終端機為代表的中小型可攜式終端機,由裝飾性的觀點而言為了作成整個面無界線的設計,而有時於顯示面整面貼合偏光片。於此情況,有時於照相機鏡頭的區域、畫面下的圖示或標誌印刷的區域亦重疊了偏光片,因此,有照相機的敏感度變差、設計性變差的問題。 Polarizers are widely used as polarized light supply elements or polarized light detection elements in display devices such as liquid crystal display devices or organic electroluminescence (EL) display devices. Display devices with polarizers have also been extended to mobile devices such as notebook personal computers or mobile phones. Due to the requirements for diversification of display purposes, clarification of display partitions, and decoration, it is expected that areas with different transmittances Polarizer. Especially for small and medium-sized portable terminals represented by smart phones or tablet terminals, from a decorative point of view, in order to create a design with no borders on the entire surface, polarized light is sometimes attached to the entire display surface. sheet. In this case, a polarizer may be superimposed on the area of the camera lens, the icon under the screen, or the area where the logo is printed. Therefore, there is a problem that the sensitivity of the camera and the design are deteriorated.
例如,於專利文獻1記載了於偏光板所含之偏光片中部分地設置雙色性物質之含量相對較低的雙色性物質低濃度部,以對應於該雙色性物質低濃度部的方式配置照相機,藉此不會對照相機性能造成不良影響。 For example, Patent Document 1 describes that a polarizer contained in a polarizer is partially provided with a dichroic substance low-concentration portion with a relatively low content of dichroic substance, and the camera is arranged to correspond to the dichroic substance low-concentration portion , Which will not adversely affect the performance of the camera.
[先前技術文獻] [Prior Technical Literature]
[專利文獻] [Patent Literature]
專利文獻1:日本特開2015-215609號公報 Patent Document 1: Japanese Patent Application Publication No. 2015-215609
於專利文獻1中,藉由施行使鹼性溶液接觸含有雙色性物質之樹脂膜的化學處理,使樹脂膜局部地脫色而形成雙色性物質低濃度部。為了脫色而使用的鹼性溶液,因作為廢液進行處理而需要時間及成本。又,於專利文獻1記載著,當使用碘作為雙色性物質時,藉由使其與鹼性溶液接觸,可減低碘之含量而形成雙色性物質低濃度部。然而,並未揭示使用碘以外之雙色性物質時之形成雙色性物質低濃度部的具體方法。 In Patent Document 1, by applying a chemical treatment in which an alkaline solution is contacted with a resin film containing a dichroic substance, the resin film is partially decolorized to form a low-concentration portion of the dichroic substance. The alkaline solution used for decolorization requires time and cost because it is treated as a waste liquid. In addition, Patent Document 1 describes that when iodine is used as a dichroic substance, by contacting it with an alkaline solution, the content of iodine can be reduced to form a dichroic substance low-concentration portion. However, it did not disclose a specific method of forming a low-concentration portion of a dichroic substance when using a dichroic substance other than iodine.
本發明之目的在於提供一種具備新穎之偏光片的偏光片複合體及光學積層體,該新穎之偏光片係取代藉由脫色等化學處理而形成有雙色性物質含量少之區域的偏光片。 The object of the present invention is to provide a polarizer composite and an optical laminate provided with a novel polarizer, which replaces the polarizer in which regions with low dichroic substance content are formed by chemical treatment such as decolorization.
本發明係提供以下的偏光片複合體及光學積層體。 The present invention provides the following polarizer composite and optical laminate.
[1]一種偏光片複合體,其係具備偏光片、設置於前述偏光片之一面側之相位差層及第一補強材、以及設置於前述偏光片之另一面側之第二補強材,其中, [1] A polarizer composite comprising a polarizer, a retardation layer and a first reinforcing material provided on one side of the polarizer, and a second reinforcing material provided on the other side of the polarizer, wherein ,
前述偏光片係具有厚度為15μm以下的偏光區域、與於俯視時被前述偏光區域所圍繞的非偏光區域, The aforementioned polarizer has a polarized area with a thickness of 15 μm or less and a non-polarized area surrounded by the aforementioned polarized area when viewed from above,
前述相位差層具有相位差區域及非相位差區域,前述相位差區域係具有相位差特性且存在於與前述偏光區域相對應之區域,前述非相位差區域係不具有相位差特性且存在於與前述非偏光區域相對應之區域, The retardation layer has a retardation area and a non-retardation area, the retardation area has a retardation characteristic and exists in an area corresponding to the polarization area, and the non-retardation area does not have a retardation characteristic and exists in and The area corresponding to the aforementioned non-polarized area,
前述第一補強材係具有複數個具有開口端面之第一胞腔(first cell),並且,各開口端面係以與前述偏光片的面相對向的方式排列, The aforementioned first reinforcing material has a plurality of first cells with open end surfaces, and each of the open end surfaces is arranged in a manner facing the surface of the aforementioned polarizer.
前述第一補強材具有胞腔區域、與非胞腔區域,該胞腔區域存在有前述第一胞腔且該胞腔區域存在於與前述偏光區域相對應的區域,該非胞腔區域係不存在前述第一胞腔且該非胞腔區域存在於與前述非偏光區域相對應的區域, The first reinforcing material has a cell region and a non-cell region. The cell region has the first cell and the cell region exists in the region corresponding to the polarization region, and the non-cell region does not exist. The aforementioned first cell and the non-cell region exists in a region corresponding to the aforementioned non-polarized region,
前述第二補強材係具有複數個具有開口端面之第二胞腔(second cell),並且,各開口端面係以與前述偏光片的面相對向的方式排列, The aforementioned second reinforcing material has a plurality of second cells with open end faces, and each of the open end faces is arranged in a manner facing the surface of the aforementioned polarizer.
至少在與前述非偏光區域相對應的區域存在前述第二胞腔, At least the second cell exists in the region corresponding to the non-polarized region,
前述非偏光區域、前述非相位差區域及前述非胞腔區域含有活性能量線硬化性樹脂的硬化物, The non-polarized region, the non-phase difference region, and the non-cell region contain a cured product of active energy ray curable resin,
前述非偏光區域所含之前述硬化物係設置在於俯視時被前述偏光區域所圍繞之貫穿孔, The hardened substance contained in the non-polarized region is provided in a through hole surrounded by the polarized region when viewed from above,
前述非相位差區域所含之前述硬化物係設置在於俯視時被前述相位差區域所圍繞之貫穿孔。 The hardened substance contained in the non-phase difference region is provided in a through hole surrounded by the phase difference region in a plan view.
[2]如[1]所記載之偏光片複合體,其係從前述偏光片側起依序設有前述相位差層及前述第一補強材。 [2] The polarizer composite as described in [1], in which the retardation layer and the first reinforcing material are provided in this order from the polarizer side.
[3]如[1]所記載之偏光片複合體,其係從前述偏光片側起依序設有前述第一補強材及前述相位差層。 [3] The polarizer composite body as described in [1], in which the first reinforcing material and the retardation layer are sequentially provided from the polarizer side.
[4]如[1]至[3]中任一項所記載之偏光片複合體,其中,前述硬化物的厚度係與前述偏光片複合體中之包含前述偏光區域、前述相位差區域及前述胞腔區域之積層結構部分的厚度相同。 [4] The polarizer composite body according to any one of [1] to [3], wherein the thickness of the cured product is the same as that of the polarizer composite body including the polarizing region, the retardation region, and the The thickness of the laminated structure in the cell region is the same.
[5]如[1]至[3]中任一項所記載之偏光片複合體,其中,前述硬化物的厚度係小於前述偏光片複合體中之包含前述偏光區域、前述相位差區域及前述胞腔區域之積層結構部分的厚度。 [5] The polarizer composite body according to any one of [1] to [3], wherein the thickness of the cured product is smaller than that of the polarizer composite body including the polarizing region, the retardation region, and the The thickness of the layered structure in the cell area.
[6]如[1]至[3]中任一項所記載之偏光片複合體,其中,前述硬化物的厚度係大於前述偏光片複合體中之包含前述偏光區域、前述相位差區域及前述胞腔區域之積層結構部分的厚度。 [6] The polarizer composite body according to any one of [1] to [3], wherein the thickness of the cured product is greater than the thickness of the polarizer composite body including the polarizing region, the retardation region, and the The thickness of the layered structure in the cell area.
[7]如[1]至[6]中任一項所記載之偏光片複合體,其中,前述相位差區域為聚合性液晶化合物之聚合硬化層。 [7] The polarizer composite as described in any one of [1] to [6], wherein the phase difference region is a polymerized hardened layer of a polymerizable liquid crystal compound.
[8]如[1]至[7]中任一項所記載之偏光片複合體,其中,前述非偏光區域係具有透光性。 [8] The polarizer composite as described in any one of [1] to [7], wherein the non-polarizing region has translucency.
[9]如[1]至[8]中任一項所記載之偏光片複合體,其中,前述非偏光區域於俯視時之徑為0.5mm以上20mm以下。 [9] The polarizer composite according to any one of [1] to [8], wherein the diameter of the non-polarized region in a plan view is 0.5 mm or more and 20 mm or less.
[10]如[1]至[9]中任一項所記載之偏光片複合體,其中,前述活性能量線硬化性樹脂係含有環氧化合物。 [10] The polarizer composite according to any one of [1] to [9], wherein the active energy ray curable resin system contains an epoxy compound.
[11]如[10]所記載之偏光片複合體,其中,前述環氧化合物係包含脂環式環氧化合物。 [11] The polarizer composite according to [10], wherein the epoxy compound includes an alicyclic epoxy compound.
[12]如[1]至[11]中任一項所記載之偏光片複合體,其中,前述第一胞腔及前述第二胞腔之前述開口的形狀係各別獨立地為多角形、圓形或橢圓形。 [12] The polarizer composite as described in any one of [1] to [11], wherein the shapes of the openings of the first cell and the second cell are independently polygonal, Round or oval.
[13]如[1]至[12]中任一項所記載之偏光片複合體,其更於前述第一胞腔之內部空間設置了透光性的填充材。 [13] The polarizer composite as described in any one of [1] to [12], wherein a translucent filler is further provided in the inner space of the first cell.
[14]如[1]至[13]中任一項所記載之偏光片複合體,其更於前述第二胞腔之內部空間設置了透光性的填充材。 [14] The polarizer composite as described in any one of [1] to [13], wherein a translucent filler is further provided in the inner space of the second cell.
[15]一種光學積層體,其係於[1]至[14]中任一項所記載之偏光片複合體的單面側或兩面側具有保護層。 [15] An optical laminate having a protective layer on one side or both sides of the polarizer composite body described in any one of [1] to [14].
藉由本發明,可提供一種具備新穎之偏光片的偏光片複合體及光學積層體。 According to the present invention, it is possible to provide a polarizer composite body and an optical laminate provided with a novel polarizer.
10:偏光片 10: Polarizer
11:偏光區域 11: Polarized area
11m:第一平面 11m: first plane
11n:第二平面 11n: second plane
12:非偏光區域 12: Non-polarized area
17,18:保護層 17,18: protective layer
20:原料偏光片 20: Raw material polarizer
21:具開孔之偏光片 21: Polarizer with aperture
22:貫穿孔 22: Through hole
25:第一支持層 25: The first support layer
26:第二支持層 26: second support layer
27:第三支持層 27: The third support layer
31:第一積層體 31: The first layered body
32:貫穿孔 32: Through hole
33:第二積層體 33: The second layered body
34:第三積層體 34: The third layered body
40:偏光片複合體 40: Polarizer composite
41:偏光片複合體 41: Polarizer composite
45:光學積層體 45: Optical laminate
46:光學積層體 46: Optical laminate
50:第一補強材 50: The first reinforcing material
51:第一胞腔 51: first cell
52:貫穿孔 52: Through hole
53:胞腔間壁 53: Cell wall
55:胞腔區域 55: Cell cavity area
56:非胞腔區域 56: non-cell area
60:第二補強材 60: second reinforcing material
61:第二胞腔 61: second cell
62:第二胞腔 62: second cell
63:胞腔間壁 63: Cell wall
70:相位差層 70: retardation layer
71:相位差層 71: retardation layer
72:貫穿孔 72: Through hole
75:相位差區域 75: Phase difference area
76:非相位差區域 76: non-phase difference area
80:附基材層之聚合硬化層 80: Polymerized hardened layer with base material layer
81:具開孔之相位差層 81: Retardation layer with openings
84:基材層 84: substrate layer
85:聚合硬化層 85: polymer hardened layer
圖1(a)係示意性顯示本發明之偏光片複合體之一例的概略截面圖,圖1(b)係圖1(a)所示之偏光片複合體之第一補強材側的概略俯視圖,圖1(c)係圖1(a)所示之偏光片複合體之第二補強材側的概略俯視圖。 Fig. 1(a) is a schematic cross-sectional view schematically showing an example of the polarizer composite of the present invention, and Fig. 1(b) is a schematic plan view of the first reinforcing member side of the polarizer composite shown in Fig. 1(a) , Figure 1(c) is a schematic plan view of the second reinforcing material side of the polarizer composite shown in Figure 1(a).
圖2(a)及圖2(b)係示意性顯示本發明之偏光片複合體的另一例的概略截面圖。 2(a) and 2(b) are schematic cross-sectional views schematically showing another example of the polarizer composite of the present invention.
圖3(a)及圖3(b)係示意性顯示偏光片複合體之非偏光區域、非相位差區域及非胞腔區域周邊之截面之一例的圖,且為用以說明設置於非偏光區域、非相位差區域及非胞腔區域之硬化物的厚度之決定方法的說明圖。 Figures 3(a) and 3(b) are diagrams schematically showing an example of the cross section around the non-polarized region, non-phase difference region, and non-cellular region of the polarizer composite, and are used to illustrate the placement of the non-polarized light An explanatory diagram of how to determine the thickness of the hardened material in the area, non-phase difference area, and non-cell area.
圖4係示意性顯示本發明之偏光片複合體之另一例的概略截面圖。 Fig. 4 is a schematic cross-sectional view schematically showing another example of the polarizer composite of the present invention.
圖5(a)至圖5(d)係示意性顯示本發明之偏光片複合體之製造方法之一例的概略截面圖。 5(a) to 5(d) are schematic cross-sectional views schematically showing an example of the method of manufacturing the polarizer composite of the present invention.
圖6(a)至圖6(c)係示意性顯示圖5所示之偏光片複合體之製造方法之後續的概略截面圖。 6(a) to 6(c) are schematic cross-sectional views schematically showing the subsequent steps of the manufacturing method of the polarizer composite shown in FIG. 5.
圖7(a)至圖7(c)係示意性顯示圖6所示之偏光片複合體之製造方法之後續的概略截面圖。 FIGS. 7(a) to 7(c) are schematic cross-sectional views schematically showing subsequent steps of the manufacturing method of the polarizer composite shown in FIG. 6.
圖8(a)至圖8(e)係示意性顯示本發明之偏光片複合體之製造方法之另一例的概略截面圖。 8(a) to 8(e) are schematic cross-sectional views schematically showing another example of the manufacturing method of the polarizer composite of the present invention.
圖9(a)至圖9(d)係示意性顯示圖8所示之偏光片複合體之製造方法之後續的概略截面圖。 9(a) to 9(d) are schematic cross-sectional views schematically showing the subsequent steps of the manufacturing method of the polarizer composite shown in FIG. 8.
圖10係示意性顯示本發明之光學積層體之一例的概略截面圖。 Fig. 10 is a schematic cross-sectional view schematically showing an example of the optical laminate of the present invention.
圖11係示意性顯示本發明之光學積層體之另一例的概略截面圖。 Fig. 11 is a schematic cross-sectional view schematically showing another example of the optical laminate of the present invention.
以下,參照圖式來說明本發明之偏光片複合體、及光學積層體之較佳實施型態。於以下的所有圖式中,為了容易理解各構成要素而適當地調整比例尺來顯示,圖式所示之各構成要素的比例尺與實際之構成要素的比例尺並不一定一致。 Hereinafter, preferred embodiments of the polarizer composite and the optical laminate of the present invention will be described with reference to the drawings. In all the following drawings, the scales are adjusted appropriately for easy understanding of the constituent elements. The scales of the constituent elements shown in the drawings and the actual constituent elements do not necessarily match.
<偏光片複合體> <Polarizer Complex>
(偏光片複合體(1)) (Polarizer Complex (1))
圖1(a)係示意性顯示本實施型態之偏光片複合體之一例的概略截面圖,圖1(b)係圖1(a)所示之偏光片複合體之第一補強材側的概略俯視圖,圖1(c)係圖1(a)所示之偏光片複合體之第二補強材側的概略俯視圖。圖2(a)及圖2(b)係示意性顯示本實施型態之偏光片複合體的另一例的概略截面圖。圖1及圖2所示之偏光片複合體40係具有偏光片10、相位差層71、第一補強材50以及第二補強材60。
偏光片複合體40係於偏光片10之一面側依序具有相位差層71及第一補強材50,且於偏光片10之另一面側具有第二補強材60。
Fig. 1(a) is a schematic cross-sectional view schematically showing an example of the polarizer composite of this embodiment, and Fig. 1(b) is the first reinforcing member side of the polarizer composite shown in Fig. 1(a) A schematic plan view. Fig. 1(c) is a schematic plan view of the second reinforcing material side of the polarizer composite shown in Fig. 1(a). 2(a) and 2(b) are schematic cross-sectional views schematically showing another example of the polarizer composite of this embodiment. The
偏光片複合體40所具有之偏光片10係如圖1(a)所示,具有偏光區域11及非偏光區域12。偏光區域11之厚度為15μm以下。非偏光區域12為於偏光片10俯視時被偏光區域11所圍繞的區域。
The
於偏光片10中之偏光區域11及非偏光區域12的配置若為以使偏光區域11圍繞非偏光區域12的方式設置即可,並無特別限定。偏光片10於俯視時,偏光區域11所佔有之總面積較佳係大於非偏光區域12所佔有之總面積。偏光片10若具有一個非偏光區域12即可,亦可具有兩個以上之非偏光區域12。當具有兩個以上之非偏光區域12時,各非偏光區域12之形狀可互為相同,亦可互為相異。
The arrangement of the
相位差層71可隔著未圖示之貼合層而設置在偏光片10的一面側。貼合層可列舉黏著劑層(pressure-sensitive adhesive layer)或接著劑層。用以形成黏著劑層的黏著劑及用以形成接著劑層的接著劑,可舉例如,用以構成後述之填充材所使用的黏著劑及接著劑。如圖1(a)所示,相位差層71具備具有相位差特性之相位差區域75、以及不具有相位差特性的非相位差區域76。相位差區域75係指在波長590nm的波長中,面內相位差值(R0)及厚度方向相位差值(Rth)之中之至少一者超過40nm之區域。非相位差區域76係指在波長590nm的波長中,面內相位差值(R0)及厚度方向相位差值(Rth)分別為40nm以下之區域。
The
面內相位差值(R0)係相位差層70之與厚度方向垂直的方向(面內方向)的相位差值,可藉由下列式(I)求得。厚度方向相位差值(Rth)係相位差層70 之厚度方向的相位差值,可藉由下列式(II)求得。面內相位差值(R0)及厚度方向相位差值(Rth)皆係以在溫度23℃之波長590nm之光測定。 The in-plane retardation value (R0) is the retardation value in the direction (in-plane direction) perpendicular to the thickness direction of the retardation layer 70, and can be obtained by the following formula (I). Thickness direction retardation value (Rth) system retardation layer 70 The retardation value in the thickness direction can be obtained by the following formula (II). Both the in-plane retardation value (R0) and the thickness direction retardation value (Rth) were measured with light with a wavelength of 590nm at a temperature of 23°C.
R0=(Nx-Ny)×d (I) R0=(Nx-Ny)×d (I)
Rth=[{(Nx+Ny)/2}-Nz]×d (II) Rth=[{(Nx+Ny)/2}-Nz]×d (II)
[式(I)及式(II)中, [In formula (I) and formula (II),
Nx為面內的折射率成為最大的方向(亦即,慢軸方向)的折射率, Nx is the refractive index in the direction in which the in-plane refractive index becomes the maximum (that is, the slow axis direction),
Ny為在面內與慢軸正交的方向(亦即,快軸方向)的折射率, Ny is the refractive index in the direction orthogonal to the slow axis in the plane (that is, the fast axis direction),
Nz為厚度方向的折射率, Nz is the refractive index in the thickness direction,
d為相位差層之厚度[nm]]。 d is the thickness of the retardation layer [nm]].
面內相位差值(R0)及厚度方向相位差值(Rth)可藉由例如王子計測機器公司製的雙折射測定裝置(商品名KOBRA-WPR)測定。 The in-plane retardation value (R0) and the thickness direction retardation value (Rth) can be measured by, for example, a birefringence measuring device (trade name KOBRA-WPR) manufactured by Oji Measuring Instruments Co., Ltd.
於偏光片複合體40所含之相位差層71中,相位差區域75存在於與偏光片10的偏光區域11相對應的區域,非相位差區域76存在於與偏光片10的非偏光區域12相對應的區域。在此處,所謂相位差區域75存在於與偏光區域11相對應的區域,係指於俯視方向中,相位差區域75及偏光區域11相互為大致相同形狀,大致相同尺寸,同樣地,所謂非相位差區域76在與非偏光區域12相對應的區域,係指於俯視方向中,非相位差區域76及非偏光區域12大致在相同位置,有大致相同形狀、大致相同尺寸(徑)之意。換言之,係指當將非相位差區域76在俯視方向投影於偏光片10時,非相位差區域76的投影區域與該偏光片10中的非偏光區域12大致相同。依據後述之偏光片複合體的製造手段,可有效率地製造相位差區域75存在於與偏光區域11相對應的區域之偏光片複合體。偏光片複合體40所含之偏光片10具有兩個以上的非偏光區域12時,
若在至少1個與非偏光區域12相對應的區域存在非相位差區域76,則可在其他的與非偏光區域12對應的區域存在相位差區域75。
In the
偏光片複合體40可在偏光片10的一面側具有1層相位差層71,也可以具有2層以上的相位差層71。具有2層以上的相位差層時,相位差層可互相隔著貼合層而積層,亦可在第一補強材50的與偏光片10側為相反側更設有相位差層。2層以上的相位差層的相位差特性可互為相同,亦可互為相異。於偏光片複合體40中,在第一補強材50的與偏光片10側為相反側更設有相位差層時,該相位差層可為相位差層71,亦可為整體由相位差區域所形成的相位差層(不具有非相位差層的相位差層)。
The
偏光片複合體40所具有之第一補強材50係如圖1(b)所示般,具有複數個具有開口端面之第一胞腔51,並且,各開口端面係以與偏光片10之面相對向的方式排列。第一補強材50具有存在有第一胞腔51的胞腔區域55、與不存在第一胞腔51的非胞腔區域56。第一胞腔51係具有被會將第一胞腔51劃分之胞腔間壁53包圍而成之中空柱狀(筒狀)的結構,且柱狀結構之軸方向兩端係經開口而成為開口端面。不存在第一胞腔51的非胞腔區域56,係指不存在有構成第一胞腔51之胞腔間壁53及由胞腔間壁53包圍而成之中空柱狀(筒狀)之空間的區域。
The first reinforcing
於第一補強材50中,胞腔區域55存在於與偏光片10中所存在之偏光區域11相對應的區域,非胞腔區域56存在於與偏光片10之非偏光區域12相對應的區域。此處,所謂胞腔區域55存在於與偏光區域11相對應的區域,係指於俯視方向中胞腔區域55及偏光區域11相互為大致相同形狀、大致相同尺寸之意,同樣地,所謂非胞腔區域56存在於與非偏光區域12相對應的區域,
係指於俯視方向中非胞腔區域56及非偏光區域12在大致相同位置呈大致相同形狀、大致相同尺寸(徑)之意。換言之,當將非胞腔區域56於俯視方向投影至偏光片10時,非胞腔區域56之投影區域與該偏光片10中之非偏光區域12大致一致。藉由後述之偏光片複合體之製造手段,可有效率地製造胞腔區域55存在於與偏光區域11相對應區域的偏光片複合體。當偏光片複合體40所含之偏光片10具有兩個以上之非偏光區域12時,若於至少一個與非偏光區域12相對應的區域存在有非胞腔區域56,則於其他的與非偏光區域12相對應(投影)的區域亦可存在有胞腔區域55。較佳為至少1個非胞腔區域56設在與非偏光區域12相對應的區域且與非相位差區域76相對應的區域。
In the first reinforcing
偏光片複合體40所具有之第二補強材60係如圖1(c)所示般,具有複數個具有開口端面之第二胞腔61,並且,各開口端面係以與偏光片10之面相對向的方式排列。第二胞腔61係與第一胞腔51同樣地,具有被會將第二胞腔61劃分之胞腔間壁63包圍而成之中空柱狀(筒狀)的結構,且柱狀結構之軸方向兩端係經開口而成為開口端面。第二補強材60中與第一補強材50不同的是,在與非偏光區域12(圖1(c)中,以波浪線顯示的部分)相對應的區域亦存在第二胞腔61。第二補強材60較佳為在偏光區域11及非偏光區域12之兩者存在第二胞腔61,更佳為在偏光片10的整面存在第二胞腔61。
The second reinforcing
偏光片10之非偏光區域12、相位差層71的非相位差區域76及第一補強材50之非胞腔區域56含有活性能量線硬化性樹脂(以下,亦稱為「硬化性樹脂(X)」)之硬化物。非偏光區域12為於俯視時被偏光區域11所包圍之貫穿孔22中設置有硬化性樹脂(X)之硬化物之區域。非相位差區域76為於俯視時會被相位差區域75包圍,且在與上述貫穿孔22相對應之區域所設的貫穿孔72
中設有硬化性樹脂(X)之硬化物的區域。非胞腔區域56為於貫穿孔52中設置有硬化性樹脂(X)之硬化物之區域,該貫穿孔52係以使複數個第一胞腔51之整體或一部分欠缺的方式設置且係於與上述貫穿孔22相對應之區域設置。
The
偏光片10之貫穿孔22、相位差層71之貫穿孔72及第一補強材50之貫穿孔52可設為於俯視時為相同形狀。貫穿孔22、72、52可設為於偏光區域11之厚度方向為連通者,可於連通之上述貫穿孔22、72、52連續地設置硬化性樹脂(X)之硬化物。
The through
偏光片複合體40所具有之偏光片10係如圖1(a)所示,具有非偏光區域12。因此,當將偏光片複合體40應用於拓展至智慧型手機或平板型終端機等之液晶顯示裝置或有機EL顯示裝置等顯示裝置時,藉由以對應於非偏光區域12的方式配置照相機鏡頭、圖示或標誌等之印刷部,可抑制照相機的敏感度之降低及設計性之降低。尤其,在偏光片複合體40中,相位差層71具有非相位差區域76。因此,藉由對應非偏光區域12及非相位差區域76而配置照相機鏡頭、圖示或標誌等印刷部,可更抑制照相機敏感度的降低及設計性的降低。
The
咸認由於偏光片10含有非偏光區域12,因此非偏光區域12之周邊容易因偏光片10之收縮而產生裂痕,該偏光片10之收縮係伴隨當應用於顯示裝置時等所受到之溫度變化而來。又,咸認偏光片10由於偏光區域11之厚度為薄到15μm以下,因此當受到衝擊時容易產生裂痕。於偏光片複合體40中,咸認由於如上述般地於第一補強材50與第二補強材60之間設置了偏光片10,因此可抑制因溫度變化或受到衝擊時之裂痕的產生、或細小的裂痕惡化為大的裂痕。
It is believed that because the
於偏光片複合體40中,藉由使非偏光區域12、非相位差區域76及非胞腔區域56含有硬化性樹脂(X)之硬化物,可將偏光片10之貫穿孔22、相位差層71之貫穿孔72及第一補強材50之貫穿孔52設為實心。由於偏光片複合體40所具有之偏光片10之厚度為薄到15μm以下,因此若於非偏光區域12未設置硬化性樹脂(X)之硬化物而使貫穿孔22為中空狀態,則由於伴隨當應用於顯示裝置時等所承受之溫度變化而來之偏光片的收縮,而會有於貫穿孔22周邊產生裂痕等不良情形之虞。相對於此,如偏光片複合體40所具有之偏光片10般,藉由於貫穿孔22、72、52設置硬化性樹脂(X)之硬化物,可將非偏光區域12、非相位差區域75及非胞腔區域56設為實心,故可抑制上述不良情形的產生。
In the
設置於偏光片複合體40之硬化性樹脂(X)之硬化物的厚度,可與偏光片複合體40之包含偏光區域11、相位差區域75及胞腔區域55之積層結構部分的厚度為相同(圖1(a)),亦可小於該積層結構部分的厚度(圖2(a)),亦可大於該積層結構部分的厚度(圖2(b))。上述積層結構部分之厚度可為偏光區域11之厚度、相位差區域75之厚度及胞腔區域55之厚度的合計厚度,亦可在該合計厚度中含有中介於偏光區域11、相位差區域75、胞腔區域55之間的層之厚度。例如,偏光片複合體40在偏光片10與相位差層71之間具有貼合層的情況,上述積層結構部分之厚度,係在偏光區域11之厚度及相位差區域75之厚度之合計厚度再加上貼合層之厚度。設置於偏光片複合體40之硬化性樹脂(X)之硬化物,可設置成埋填偏光片10之貫穿孔22之至少一部份、相位差層71之貫穿孔72之至少一部份、及第一補強材50之貫穿孔52之至少一部份。偏光片複合體40在偏光片10及相位差層71之間具有貼合層之情況,只要以埋填設在貼合層的貫穿孔的至少一部分的方式,設置有硬化性樹脂(X)之硬化物即可。硬化性樹
脂(X)之硬化物較佳為設置成填滿偏光片10之貫穿孔22整體,更佳為設置成填滿偏光片10之貫穿孔22整體、相位差層71之貫穿孔72整體、第一補強材50之貫穿孔52整體、及上述貼合層之貫穿孔整體。
The thickness of the cured product of the curable resin (X) provided in the
偏光片複合體40中之含有偏光區域11、相位差區域75、及胞腔區域55的積層結構部分之厚度,較佳為30μm以下,更佳為25μm以下,再更佳為20μm以下,可為18μm以下,可為16μm以下,通常為2μm以上。上述積層結構部分之厚度超過上述範圍時,如後述般,用以在非偏光區域12、非相位差區域76、及非胞腔區域56設置硬化性樹脂(X)之硬化物之操作性容易降低。厚度例如可使用接觸式膜厚測定裝置(MS-5C,NIKON股份有限公司製)測定。另外,胞腔區域之厚度相當於第一胞腔51之高度(第一胞腔51的與開口端面正交的方向的長度)。
The thickness of the layered structure portion containing the
設置於偏光片複合體40之硬化物的厚度係以如下方式決定。首先,於偏光片複合體40中,假設包含偏光片10之偏光區域11的表面(相位差層71側之相反側的表面)之第一平面、與包含第一補強材50之胞腔區域55之開口端面(偏光片10側之相反側的開口端面)之第二平面。接著,於非偏光區域12中,決定第一位置及第二位置,該第一位置為於偏光片10側之硬化物表面與第一平面所成之最短距離為最大時之位置,該第二位置為於第一補強材50側之硬化物表面與第二平面所成之最短距離為最大時之位置。然後,將第一位置之最短距離(dm)、第二位置之最短距離(dn)、及第一平面與第二平面之距離(D)之合計值(dm+dn+D),作為設置於偏光片複合體40之硬化物的厚度。
The thickness of the cured product provided in the
根據圖3來具體說明關於當設置於非偏光區域12、非相位差區域76及非胞腔區域56之硬化性樹脂(X)之硬化物的厚度與偏光片複合體40中之包
含偏光區域11、相位差區域75及胞腔區域55的積層結構部分的厚度不同時之厚度的決定方法。圖3(a)及(b)係示意性顯示偏光片複合體之非偏光區域、非相位差區域及非胞腔區域周邊之截面之一例的圖,且係用以說明設置於非偏光區域、非相位差區域及非胞腔區域之硬化物的厚度之決定方法的說明圖。
The thickness of the cured product of the curable resin (X) when disposed in the
當如圖3(a)所示般地於非偏光區域12、非相位差區域76及非胞腔區域56設置了硬化物時,將「沿著第一補強材50之相位差層71之相反側的表面側之在非胞腔區域56之直線」假設為第一平面11m。在連接「該第一平面11m上之任意一點」與「設置於非胞腔區域56之硬化物的表面上之任意一點」的直線成為最短距離的直線之中,將該直線之長度(圖3(a)中之「dm」)成為最大時之位置作為第一位置。其次,如圖3(a)所示,將「沿著偏光片10之相位差層71側之相反側的表面側的在非偏光區域12之以點劃線所示之直線」假設為第二平面11n。在連接「該第二平面11n上之任意一點」與「設置於非偏光區域12之硬化物的表面上之任意一點」的直線成為最短距離的直線之中,將該直線之長度(圖3(a)中之「dn」)成為最大時之位置作為第二位置。此處,如圖3(a)所示,於偏光片複合體40的厚度方向,當設置於非胞腔區域56及非偏光區域12之硬化物的表面存在於較第一平面11m及第二平面11n更靠近內面側(相位差層71側)時,dm及dn係顯示為負的值。又,將第一平面11m與第二平面11n之間的距離(相當於積層結構部分的厚度)設為D。如此,圖3(a)所示之設置於非偏光區域12、非相位差區域76及非胞腔區域56之硬化物的厚度,可決定為D+dm+dn(dm及dn為負值)。
3 (a) as shown in Figure 3 (a) in the
又,關於當如圖3(b)所示般地於非偏光區域12、非相位差區域76及非胞腔區域56設置了硬化物時,亦與上述同樣地,可藉由假設第一平面11m
與第二平面11n,來決定設置於非偏光區域12、非相位差區域76及非胞腔區域56之硬化物的厚度。具體而言,首先,在連接「第一平面11m上之任意一點」與「設置於非胞腔區域56之硬化物的表面上之任意一點」的直線成為最短距離的直線之中,將該直線之長度(圖3(b)中之「dm」)成為最大時之位置作為第一位置。其次,在連接「第二平面11n上之任意一點」與「設置於非偏光區域12之硬化物的表面上之任意一點」的直線成為最短距離的直線之中,將該直線之長度(圖3(b)中之「dn」)成為最大時之位置作為第二位置。此處,如圖3(b)所示,於偏光片複合體40的厚度方向,當設置於非胞腔區域56及非偏光區域12之硬化物的表面存在於較第一平面11m及第二平面11n更靠近外面側(相位差層71側之相反側)時,dm及dn係顯示為正的值。如此,圖3(b)所示之設置於非偏光區域12、非相位差區域76及非胞腔區域56之硬化物的厚度,可決定為D+dm+dn(dm及dn為正值)。
In addition, when a hardened substance is provided in the
偏光片複合體40係以具備偏光片10、相位差層71、第一補強材50及第二補強材60的狀態應用於顯示裝置等。第一補強材50之第一胞腔51及第二補強材60之第二胞腔61的內部空間若為中空,則會因胞腔間壁53與第一胞腔51的內部空間之折射率的不同、及胞腔間壁63與第二胞腔61的內部空間的折射率的不同等而有顯示裝置之辨認性降低之虞。因此,於偏光片複合體40中之第一補強材50之第一胞腔51的內部空間、及第二補強材60之第二胞腔61的內部空間,較佳為設置有透光性的填充材。於偏光片複合體40之第一補強材50及第二補強材60中,當如後述般地於複數個第一胞腔51之間或複數個第二胞腔61之間設有間隙時,較佳係於該間隙亦設有透光性的填充材。這樣的填充材係如後述。
The
本說明書中,所謂透光性是指透射80%以上之波長400nm至700nm範圍之可見光的性質(透射率),較佳為透射85%以上者,更佳為透射90%以上者,又更佳為透射92%以上者。以下之「透光性」之定義及對可見光之透射率的較佳範圍亦與上述相同。 In this specification, the so-called light transmittance refers to the property (transmittance) that transmits more than 80% of visible light in the wavelength range of 400nm to 700nm, preferably more than 85%, more preferably more than 90%, and more preferably The transmission is above 92%. The following definition of "transmittance" and the preferred range of transmittance to visible light are also the same as above.
(偏光片複合體(2)) (Polarizer Complex (2))
圖4係示意性顯示本實施型態之偏光片複合體之另一例的概略截面圖。圖4所示之偏光片複合體41係具有偏光片10、相位差層71、第一補強材50及第二補強材60。偏光片複合體41在偏光片10的一面側依序具有第一補強材50及相位差層71,在偏光片10的另一面側具有第二補強材60。關於偏光片10、相位差層71、第一補強材50、及第二補強材60的說明係如上述。
4 is a schematic cross-sectional view schematically showing another example of the polarizer composite of this embodiment. The
相位差層71可隔著未圖示之貼合層而設置在第一補強材50的偏光片10的相反側。貼合層可列舉在上述偏光片複合體40中所說明之黏著劑層或接著劑層。中介於第一補強材50與相位差層71之間之貼合層,較佳為亦設在第一補強材50之第一胞腔51的內部空間。第一補強材50之第一胞腔51的內部空間若是為空洞,則會因胞腔間壁53與第一胞腔51的內部空間之折射率的不同等而有顯示裝置的辨認性降低之虞。因此,藉由將構成中介於第一補強材50與相位差層71之間之貼合層之材料埋填第一補強材50之第一胞腔51的內部空間的方式來設置,可抑制顯示裝置的辨認性的降低。在如後述般地於複數個第一胞腔51之間設置有間隙的情況,較佳係於該間隙亦設置構成貼合層的材料。
The
偏光片複合體41在第一補強材50的偏光片10的相反側可具有1層相位差層71,亦可具有2層以上的相位差層71。具有2層以上的相位差層的情況,相位差層可互相隔著貼合層來積層,相位差特性可互為相同,亦可互為相
異。於偏光片複合體41中,在第一補強材50的偏光片10側的相反側更具有相位差層的情況,該相位差層可為相位差層71,亦可為整體由相位差區域所形成的相位差層(不具有非相位差層的相位差層)。
The
偏光片複合體41藉由與上述的偏光片複合體40同樣地配置照相機鏡頭、圖示或標誌等印刷部,可更抑制照相機敏感度的降低及設計性的降低,可抑制上述不良情形的產生。又,偏光片複合體41中,咸認由於在偏光片10的兩面分別設有第一補強材50及第二補強材60,因此可抑制受到溫度變化或衝撃時所產生的偏光片10的裂痕、微細的裂痕惡化為大的裂痕。
The
設置於偏光片複合體41的硬化性樹脂(X)之硬化物之厚度,可與偏光片複合體40中之包含相位差區域75、偏光區域11、及胞腔區域55的積層結構部分之厚度相同(圖4),亦可小於該積層結構部分之厚度,亦可大於該積層結構部分之厚度。設置於偏光片複合體41的硬化性樹脂(X)的硬化物,以埋填相位差層71的貫穿孔72的至少一部分、偏光片10的貫穿孔22的至少一部分、及第一補強材50的貫穿孔52的至少一部分的方式來設置即可。硬化性樹脂(X)之硬化物較佳為以填滿偏光片10的貫穿孔22整體的方式來設置,更佳為以填滿相位差層71的貫穿孔72整體、偏光片10的貫穿孔22整體、及第一補強材50的貫穿孔52整體的方式來設置。
The thickness of the cured product of the curable resin (X) provided in the polarizer
偏光片複合體41中之包含相位差區域75、偏光區域11及胞腔區域55之積層結構部分之厚度,較佳為30μm以下,更佳為25μm以下,再更佳為20μm以下,可為18μm以下,可為16μm以下,通常為2μm以上。上述積層結構部分之厚度超過上述範圍時,如後述般,用以在非相位差區域76、非偏光區
域12、及非胞腔區域56中設置硬化性樹脂(X)之硬化物的操作性容易降低。各厚度及厚度的測定方法係如上述所說明。
The thickness of the laminated structure portion including the
設置於偏光片複合體41的硬化物之厚度可仿效上述說明之設置於偏光片複合體40之硬化物之厚度的測定方法來進行。具體而言,於上述測定方法中,將第一平面設為包含相位差層71的相位差區域75之表面(與偏光片10側為相反側的表面)的平面,決定硬化性樹脂(X)之硬化物之厚度即可。
The thickness of the cured product provided on the polarizer
第二補強材60係以被包含在偏光片複合體41的狀態應用於顯示裝置等。因此,如在上述之偏光片複合體40中所說明般,第二補強材60之第二胞腔61的內部空間及複數個第二胞腔61之間的間隙較佳為設置有透光性的填充材。
The second reinforcing
上述所說明的偏光片複合體40、41所具有之第一補強材50與第二補強材60係可與第一補強材50及第二補強材60所分別具有之第一胞腔51與第二胞腔61互相為相同的形狀及大小,亦可在形狀及大小之中之至少一者相互不同。設在偏光片10之第一補強材50之第一胞腔51的開口與第二補強材60之第二胞腔61的開口,在俯視中,可由相互重疊的方式配置,但較佳係由相互錯開的方式配置。
The first reinforcing
上述所說明的偏光片複合體40、41可為圓偏光板。在此情況,相位差層71的相位差區域75可具有作為1/4波長板而發揮功能之相位差特性。在偏光片複合體40、41為圓偏光板之情況,於偏光片10的一面側,可具有2層以上的相位差層。例如,於偏光片10的一面側,以相位差區域75的相位差特性為[a]1/2波長板及1/4波長板之順序、[b]逆波長分散性的1/4波長板及正C板之
順序、或[c]正C板及逆波長分散性的1/4波長板之順序配置的方式來積層相位差層71即可。
The
偏光片複合體40、41可為片狀體,亦可為具有在保管時或輸送時等會被捲繞成為卷狀的長度的長條體。偏光片複合體40、41的平面形狀及大小並無特別限定。
The
(偏光區域) (Polarized area)
偏光片10之偏光區域11較佳為於波長380nm至780nm之範圍的波長顯示吸收雙色性。偏光片10具有將具有與其吸收軸平行之振動面之直線偏光吸收並使具有與吸收軸正交(與透射軸平行)之振動面之直線偏光透射的性質,而該性質主要可藉由偏光區域11而獲得。
The
偏光區域11例如可使用:碘或雙色性染料等雙色性物質吸附/配向於聚乙烯醇系薄膜、部分縮甲醛化聚乙烯醇系薄膜、乙烯/乙酸乙烯酯共聚物系部分皂化薄膜等親水性高分子薄膜而成者;於聚乙烯醇之脫水處理物或聚氯乙烯之脫鹽酸處理物等、聚烯系配向膜或已配向液晶化合物者吸附/配向有雙色性物質者等。其中,就光學特性優異者而言,較佳為使用將聚乙烯醇系薄膜以碘染色並進行單軸延伸所得者。
For the
首先,針對會成為較佳偏光區域11之將聚乙烯醇系薄膜以碘染色並進行單軸延伸所得者,簡單地說明其製造方法。
First, the manufacturing method of the polyvinyl alcohol-based film that will become the preferred
以碘進行之染色,例如可藉由將聚乙烯醇系薄膜浸漬於碘水溶液來進行。單軸延伸之延伸倍率較佳為3至7倍。可於染色處理後進行延伸,亦可一邊染色一邊進行延伸。又,亦可於延伸後進行染色。 Dyeing with iodine can be performed, for example, by immersing a polyvinyl alcohol-based film in an iodine aqueous solution. The stretching magnification of uniaxial stretching is preferably 3 to 7 times. It can be stretched after dyeing, or stretched while dyeing. Also, dyeing may be performed after stretching.
聚乙烯醇系薄膜可視需要而施以膨潤處理、交聯處理、洗淨處理、乾燥處理等。例如,藉由於染色前將聚乙烯醇系薄膜浸漬於水中進行水洗,不僅可洗淨聚乙烯醇系薄膜表面之髒污或抗結塊劑,亦可使聚乙烯醇系薄膜膨潤而防止染色不均等。 The polyvinyl alcohol-based film may be subjected to swelling treatment, cross-linking treatment, washing treatment, drying treatment, etc. as needed. For example, by immersing the polyvinyl alcohol-based film in water for washing before dyeing, not only can the surface of the polyvinyl alcohol-based film be cleaned of dirt or anti-blocking agent, but also the polyvinyl alcohol-based film can be swelled to prevent staining. equal.
聚乙烯醇系樹脂薄膜之延伸處理、染色處理、交聯處理(硼酸處理)、水洗處理、乾燥處理,例如可依據日本特開2012-159778號公報所記載之方法進行。於該文獻所記載之方法中,藉由對基材薄膜塗敷聚乙烯醇系樹脂,而形成會成為偏光區域11之聚乙烯醇系樹脂層。此時,所使用之基材薄膜亦可作為後述之第一支持層25使用。
The stretching treatment, dyeing treatment, cross-linking treatment (boric acid treatment), water washing treatment, and drying treatment of the polyvinyl alcohol-based resin film can be performed, for example, according to the method described in JP 2012-159778 A. In the method described in this document, a polyvinyl alcohol-based resin layer is formed by applying a polyvinyl alcohol-based resin to a base film. In this case, the base film used can also be used as the
接著,簡單說明雙色性色素吸附/配向於已配向液晶化合物者所成之偏光區域11。於此情形之偏光區域11例如可使用如日本特開2013-37353號公報、日本特開2013-33249號公報、日本特開2016-170368號公報、日本特開2017-83843號公報等所記載之於液晶化合物聚合而成之硬化膜中配向有雙色性色素者。雙色性色素可使用於波長380至800nm之範圍內具有吸收者,較佳為使用有機染料。雙色性色素可舉例如偶氮化合物。液晶化合物為可於經配向之狀態下進行聚合的液晶化合物,且可於分子內具有聚合性基。如此之液晶化合物聚合而成之硬化膜,可形成於基材薄膜上,於此情形,上述基材薄膜亦可作為後述之第一支持層25使用。
Next, a brief description will be given of the
如上述方式製作偏光區域11所使用之偏光膜後,較佳為以穿孔加工形成非偏光區域12而形成偏光片10。於本說明書中,有時將如此僅由偏光區域11所形成之偏光膜稱為原料偏光片20。
After the polarizing film used in the
偏光區域11之視感度校正偏光度(Py)較佳為80%以上,更佳為90%以上,又更佳為95%以上,特佳為99%以上。偏光區域11之單體透射率(Ts)通常為未滿50%,亦可為46%以下。偏光區域11之單體透射率(Ts)較佳為39%以上,更佳為39.5%以上,又更佳為40%以上,特佳為40.5%以上。
The visual sensitivity correction polarization (Py) of the
單體透射率(Ts)係依據JIS Z8701之2度視野(C光源)進行測定並進行視感度校正所得之Y值。視感度校正偏光度(Py)及單體透射率(Ts)例如可使用紫外線可見光分光光度計(日本分光股份有限公司製,製品名:V7100)進行測定,根據進行視感度校正後之平行透射率Tp及正交透射率Tc,藉由下述式可求得。 The single transmittance (Ts) is the Y value obtained by measuring and calibrating the visual sensitivity according to the 2 degree field of view (light source C) of JIS Z8701. Visual sensitivity correction polarization (Py) and monomer transmittance (Ts) can be measured using, for example, an ultraviolet-visible spectrophotometer (manufactured by JASCO Corporation, product name: V7100), based on the parallel transmittance after correction of visual sensitivity Tp and orthogonal transmittance Tc can be obtained by the following formula.
Py[%]={(Tp-Tc)/(Tp+Tc)}1/2×100 Py[%]={(Tp-Tc)/(Tp+Tc)} 1/2 ×100
(非偏光區域) (Non-polarized area)
一般而言,所謂「非偏光」係指可於電場成分觀測到之不具規則性的光。換言之,所謂非偏光係無法觀測到有優勢之特定偏光狀態之無規的光。又,所謂「部分偏光」係指介於偏光與非偏光之中間狀態的光,且係指直線偏光、圓偏光及橢圓偏光之至少一種與非偏光混雜而成的光之意。偏光片10之非偏光區域12,係指透射該非偏光區域12之光(透射光)成為非偏光或部分偏光之意。特佳係透射光為非偏光之非偏光區域。
Generally speaking, the so-called "unpolarized light" refers to the irregular light that can be observed in the electric field component. In other words, the so-called non-polarized light system cannot observe the random light with the advantageous specific polarization state. In addition, the so-called "partially polarized light" refers to light in an intermediate state between polarized light and non-polarized light, and refers to light that is a mixture of at least one of linearly polarized light, circularly polarized light, and elliptical polarized light and non-polarized light. The
偏光片10之非偏光區域12為俯視時被偏光區域11所圍繞之區域。非偏光區域12含有硬化性樹脂(X)之硬化物。非偏光區域12較佳為在設置於僅由偏光區域11所形成之偏光片(原料偏光片20)之貫穿孔中設置了後述之含有硬化性樹脂(X)之活性能量線硬化性樹脂組成物之硬化物者。非偏光區域12具有透光性。
The
藉由使偏光片10之非偏光區域12具有透光性,可確保非偏光區域12有預定的透明性。藉此,當將偏光片複合體40、41應用於顯示裝置時,可對應非偏光區域12而配置照相機鏡頭、圖示或標誌等之印刷部,藉此可抑制照相機敏感度的降低或設計性的降低。
By making the
非偏光區域12之平面形狀並無特別限定,但可設為圓形;橢圓形;卵圓形;三角形或四角形等多角形;多角形之至少一角成為圓角(具有R的形狀)的圓角多角形等。
The planar shape of the non-polarized
非偏光區域12之徑較佳為0.5mm以上,可為1mm以上,可為2mm以上,亦可為3mm以上。非偏光區域12之徑較佳為20mm以下,可為15mm以下,可為10mm以下,亦可為7mm以下。非偏光區域12之徑係指連接該非偏光區域12的外周之任意兩點之直線中長度最長之直線的長度。
The diameter of the
於非偏光區域12所設置之硬化性樹脂(X)之硬化物的厚度,可與偏光區域11之厚度相同,亦可小於偏光區域11之厚度,亦可大於偏光區域11之厚度。如上所述,於非偏光區域12所設置之硬化性樹脂(X)之硬化物,較佳為設置成填滿貫穿孔22整體。
The thickness of the cured product of the curable resin (X) provided in the
於非偏光區域12所設置之硬化物的厚度,可依上述所說明之於偏光片複合體40所設置之硬化物的厚度之測定方法來進行測定。具體而言,於上述測定方法中,將第二平面設為「偏光片10之偏光區域11之表面中之已設為被包含於第一平面之表面的相反側之表面」,而決定硬化性樹脂(X)之硬化物的厚度即可。
The thickness of the cured product provided in the
(第一補強材之胞腔區域) (Cell area of the first reinforcing material)
胞腔區域55為第一補強材50之存在有第一胞腔51的區域。第一胞腔51係如圖1(b)所示般地具有被會將第一胞腔51劃分之胞腔間壁53包圍而成之中空柱狀(筒狀)的結構,且柱狀結構之軸方向兩端係開口而成為開口端面。第一胞腔51係具有配置於與偏光片複合體40、41之偏光片10的距離相對地近側之第一開口端面、與配置於相對地遠側之第二開口端面作為開口端面。胞腔區域55若第一開口端面及第二開口端面中之至少一者以與偏光片10相對向的方式排列即可,較佳為第一開口端面及第二開口端面之兩者皆以與偏光片10相對向的方式排列。
The
胞腔區域55所具有之第一胞腔51之開口形狀並無特別限定,但以多角形、圓形、或橢圓形為佳。第一開口端面之開口形狀、與第二開口端面之開口形狀,較佳為相同大小的相同形狀,但亦可為不同形狀,亦可為相同形狀而大小不同。又,胞腔區域55所具有之複數個第一胞腔51的開口形狀,可互為相同,亦可互為相異。
The opening shape of the
胞腔區域55所具有之複數個第一胞腔51較佳係於開口端面的俯視時,以各第一胞腔51之開口互相鄰接的方式排列。複數個第一胞腔51於開口端面的俯視時,例如可如圖1(b)所示之第一胞腔51之開口形狀為六角形等的情形般,以使第一胞腔51相互為無間隙地配置的方式來排列。或者,複數個第一胞腔51於開口端面的俯視時,可如第一胞腔51之開口形狀為圓形等的情形般,以使複數個第一胞腔51之胞腔間壁53的一部分相接而於複數個第一胞腔51之間有間隙地配置的方式來排列。
The plurality of
較佳係第一補強材50之胞腔區域55例如如圖1(b)所示般,於第一開口端面及第二開口端面之任一者之開口形狀皆為六角形,且於偏光片複合
體40、41之面方向,具有以開口相互為相鄰而無間隙地配置的方式排列有複數個第一胞腔51的蜂巢結構。
It is preferable that the
第一胞腔51之開口大小並無特別限定,但以具有小於非偏光區域12之徑的徑為佳。第一胞腔51之徑較佳為3mm以下,可為2mm以下,亦可為1mm以下,通常為0.1mm以上,亦可為0.5mm以上。該第一胞腔51之開口之徑,係指連接開口外周之任意兩點之直線中長度最長之直線的長度。
The size of the opening of the
第一胞腔51之高度(與第一胞腔51之開口端面正交之方向的長度)通常為0.1μm以上,可為0.5μm以上,可為1μm以上,亦可為3μm以上,又,通常為15μm以下,可為13μm以下,亦可為10μm以下。 The height of the first cell 51 (the length in the direction orthogonal to the opening end surface 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, and usually It is 15 μm or less, may be 13 μm or less, or may be 10 μm or less.
胞腔區域55之會劃分第一胞腔51之胞腔間壁53係以具有透光性為佳。
The
胞腔區域55之胞腔間壁53的線寬例如為0.05mm以上,可為0.1mm以上,可為0.5mm以上,亦可為1mm以上,又,通常為5mm以下,亦可為3mm以下。
The line width of the
胞腔區域55之胞腔間壁53例如可藉由樹脂材料或無機氧化物來形成,而以藉由樹脂材料來形成為佳。樹脂材料可舉例如熱塑性樹脂、熱硬化性樹脂或活性能量線硬化性樹脂等硬化性樹脂等。樹脂材料可舉例如上述之硬化性樹脂(X);作為上述填充材所使用之熱塑性樹脂所例示之熱塑性樹脂等。無機氧化物可舉例如氧化矽(SiO2)、氧化鋁等。
The
(第一補強材之非胞腔區域) (The non-cell area of the first reinforcing material)
非胞腔區域56為第一補強材50之不存在有第一胞腔51的區域,如上所述,為不存在有構成第一胞腔51之胞腔間壁53及由胞腔間壁53圍繞而成之中空柱
狀(筒狀)之空間的區域。非胞腔區域56具有貫穿孔52,該貫穿孔52係以使複數個第一胞腔51之整體或一部分欠缺的方式設置且係於與偏光片10之貫穿孔22相對應之區域設置。非胞腔區域56可於該貫穿孔52含有硬化性樹脂(X)之硬化物。
The
非胞腔區域56之平面形狀及徑並無特別限定,可舉例如作為非偏光區域12之平面形狀所例示的形狀及徑。非胞腔區域56之平面形狀及徑,較佳為與非偏光區域12之平面形狀及徑相同。
The planar shape and diameter of the
(第二補強材) (Second reinforcing material)
第二補強材60所具有之第二胞腔61係如圖1(c)所示,具有被會將第二胞腔61劃分之胞腔間壁63包圍而成之中空柱狀(筒狀)的結構,且柱狀結構之軸方向兩端係開口而成為開口端面。第二胞腔61係具有配置於與偏光片複合體40、41之偏光片10的距離相對近側之第1’開口端面、與配置於相對遠側之第2’開口端面作為開口端面。第二補強材60之第1’開口端面及第2’開口端面之中之至少一者以與偏光片10相對向的方式排列即可,較佳為第1’開口端面及第2’開口端面之兩者皆以與偏光片10相對向的方式排列。
The second cell 61 of the second reinforcing
第二補強材60所具有之第二胞腔61之開口形狀,可列舉在第一胞腔51的開口形狀所例示者。第1’開口端面之開口形狀、與第2’開口端面之開口形狀,較佳為相同大小的相同形狀,但亦可為不同形狀,亦可為相同形狀而大小不同。又,複數個第二胞腔61的開口形狀,可互為相同,亦可互為相異。
The opening shape of the second cell 61 of the second reinforcing
第二補強材60所具有之複數個第二胞腔61較佳係於開口端面的俯視時,以各第二胞腔61之開口互相鄰接的方式排列。複數個第二胞腔61於開口端面的俯視時,例如可如圖1(c)所示之第二胞腔61之開口形狀為六角形等的
情形般,以使第二胞腔61相互為無間隙地配置的方式來排列。或者,複數個第二胞腔61於開口端面的俯視時,可如第二胞腔61之開口形狀為圓形等的情形般,以使複數個第二胞腔61的胞腔間壁63的一部分相接而於複數個第二胞腔61之間有間隙地配置的方式來排列。
The plurality of second cells 61 of the second reinforcing
較佳係第二補強材60例如如圖1(c)所示,於第1’開口端面及第2’開口端面之任一者之開口形狀皆為六角形,且於偏光片複合體40之面方向,具有以開口相互為相鄰而無間隙地配置的方式排列有複數個第二胞腔62的蜂巢結構。
Preferably, the second reinforcing
第二胞腔62之開口大小及高度,例如,可設為針對第一胞腔51的開口所例示的大小及高度。第二補強材60之會劃分第二胞腔61的胞腔間壁63的透光性、線寬、及材料,例如,可設為針對會劃分第一胞腔51的胞腔間壁53所例示的透光性、線寬、及材料。
The size and height of the opening of the
(相位差區域) (Phase difference area)
相位差層71係具有相位差特性,但此性質主要能夠從相位差區域75取得。相位差區域75的波長590nm的波長中之面內相位差值(R0)及厚度方向相位差值(Rth)之中之至少一者超過40nm,可各別獨立地為100nm以上,可為500nm以上,可為1000nm以上,通常為15000nm以下。
The
相位差區域75可具有例如作為1/4波長板、1/2波長板、逆波長分散性的1/4波長板或正C板而發揮功能之相位差特性。如上所述,亦可積層複數種相互間相位差特性不同的相位差層來作為相位差區域75。
The
相位差區域75可為由後述之整體為相位差區域之原料相位差層所形成的區域。在將積層有複數種相互間相位差特性不同的相位差層者作為相
位差區域75的情形,只要將該積層有複數種者作為原料相位差層即可。因此,相位差區域75可藉由構成後述之原料相位差層的材料所形成,具體而言可含有熱塑性樹脂。相位差區域可藉由例如將熱塑性樹脂單軸延伸或雙軸延伸而成的延伸膜、或聚合性液晶性化合物的聚合硬化層等而形成。
The
相位差區域75之厚度較佳為15μm以下,可為13μm以下,可為10μm以下,可為8μm以下,亦可為5μm以下,通常為1μm以上。
The thickness of the
(非相位差區域) (Non-phase difference area)
相位差層71的非相位差區域76為於俯視時被相位差區域75包圍的區域。非相位差區域76的波長590nm的波長中之面內相位差值(R0)及厚度方向相位差值(Rth)為40nm以下,可各別獨立地為35nm以下,可為30nm以下,可為20nm以下,亦可為0nm。
The
非相位差區域76於俯視時被相位差區域75包圍的貫穿孔72中,可含有硬化性樹脂(X)之硬化物。設置於非相位差區域76的硬化性樹脂(X)之硬化物之厚度,可與相位差區域75之厚度相同,亦可小於非相位差區域76之厚度,也可大於非相位差區域76之厚度。如上述般,設置於非相位差區域76的硬化性樹脂(X)之硬化物較佳為以填滿貫穿孔72整體的方式設置。如後述般,藉由將這樣的非相位差區域76對應非偏光區域12而設置,在將偏光片複合體40、41應用於顯示裝置之際,可對應非偏光區域12及非相位差區域76而配置照相機鏡頭、圖示或標誌等的印刷部,藉此可抑制照相機敏感度的降低或設計性的降低。
The
設置於非相位差區域76的硬化物之厚度可仿效上述說明之設置於偏光片複合體40的硬化物之厚度的測定方法來進行。具體而言,於上述測定
方法中,將第一平面及第二平面分別設為相位差層71的相位差區域75的一表面及另一表面,決定硬化性樹脂(X)之硬化物之厚度即可。
The thickness of the cured product provided in the
非相位差區域76的平面形狀及徑並無特別限定,可列舉作為非偏光區域12的平面形狀所例示的形狀及徑。非相位差區域76的平面形狀及徑較佳為分別與非偏光區域12的平面形狀及徑相同。
The planar shape and diameter of the
(活性能量線硬化性樹脂(硬化性樹脂(X))) (Active energy ray curable resin (curable resin (X)))
偏光片複合體40、41中之非偏光區域12、非胞腔區域56及非相位差區域76係如上所述,為設置有活性能量線硬化性樹脂(硬化性樹脂(X))之硬化物的區域,較佳為由含該硬化性樹脂(X)之活性能量線硬化性樹脂組成物(以下,亦稱為「硬化性樹脂組成物」)所形成。硬化性樹脂組成物所含之硬化性樹脂(X)為藉由紫外線、可見光、電子射線、X射線等活性能量線之照射而硬化者。硬化性樹脂(X)係以藉由紫外線的照射而硬化的紫外線硬化性樹脂為佳。含硬化性樹脂(X)之硬化性樹脂組成物,可為活性能量線硬化型之接著劑,於此情形,更佳為紫外線硬化型之接著劑。
The
硬化性樹脂組成物較佳為無溶劑型。所謂無溶劑型係指不積極添加溶劑,具體而言,所謂無溶劑型之硬化性樹脂組成物,係指相對於該硬化性樹脂組成物所含之硬化性樹脂(X)100重量%,溶劑含量為5重量%以下。 The curable resin composition is preferably a solvent-free type. The solvent-free type means that no solvent is actively added. Specifically, the solvent-free curable resin composition refers to 100% by weight of the curable resin (X) contained in the curable resin composition. The solvent The content is 5% by weight or less.
硬化性樹脂(X)較佳為含有環氧化合物。所謂環氧化合物係指於分子內具有一個以上(較佳為兩個以上)之環氧基的化合物。環氧化合物可舉例如脂環式環氧化合物、脂肪族環氧化合物、氫化環氧化合物(具有脂環式環之多元醇的縮水甘油基醚)等。硬化性樹脂(X)所含之環氧化合物可為一種,亦可為兩種以上。 The curable resin (X) preferably contains an epoxy compound. The so-called epoxy compound refers to a compound having one or more (preferably two or more) epoxy groups in the molecule. Examples of the epoxy compound include alicyclic epoxy compounds, aliphatic epoxy compounds, and hydrogenated epoxy compounds (glycidyl ethers of polyhydric alcohols having an alicyclic ring). The epoxy compound contained in the curable resin (X) may be one type or two or more types.
相對於硬化性樹脂(X)100重量%,環氧化合物之含量較佳為40重量%以上,更佳為50重量%以上,又更佳為60重量%以上。相對於硬化性樹脂(X)100重量%,環氧化合物之含量若為100重量%以下即可,可為90重量%以下,又可為80重量%以下,亦可為75重量%以下。 The content of the epoxy compound relative to 100% by weight of the curable resin (X) is preferably 40% by weight or more, more preferably 50% by weight or more, and still more preferably 60% by weight or more. The content of the epoxy compound relative to 100% by weight of the curable resin (X) may be 100% by weight or less, and may be 90% by weight or less, 80% by weight or less, or 75% by weight or less.
環氧化合物之環氧當量通常為40至3000g/當量,較佳為50至1500g/當量之範圍內。環氧當量若超過3000g/當量,則與硬化性樹脂(X)所含之其他成分的相溶性有降低的可能性。 The epoxy equivalent of the epoxy compound is usually 40 to 3000 g/equivalent, preferably in the range of 50 to 1500 g/equivalent. If the epoxy equivalent exceeds 3000 g/equivalent, the compatibility with other components contained in the curable resin (X) may decrease.
硬化性樹脂(X)所含之環氧化合物較佳為含有脂環式環氧化合物。脂環式環氧化合物為於分子內具有一個以上鍵結於脂環之環氧基的環氧化合物。所謂「鍵結於脂環之環氧基」係指下述式所示結構中之橋接之氧原子-O-之意。下述式中,m為2至5之整數。 The epoxy compound contained in the curable resin (X) preferably contains an alicyclic epoxy compound. The alicyclic epoxy compound is an epoxy compound having one or more epoxy groups bonded to an alicyclic ring in the molecule. The "epoxy group bonded to an alicyclic ring" refers to the bridged oxygen atom -O- in the structure shown in the following formula. In the following formula, m is an integer of 2 to 5.
除去了上述式中之(CH2)m中之一個或複數個氫原子之形式的基鍵結於其他化學結構的化合物,可成為脂環式環氧化合物。(CH2)m中之一個或複數個氫原子亦可適當地經甲基或乙基等直鏈狀烷基取代。脂環式環氧化合物之中,具有氧雜雙環己烷環(上述式中m=3者)、或氧雜雙環庚烷環(上述式中m=4者)之環氧化合物,由於可對偏光片10之偏光區域11、相位差層71的相位差區域75及第一補強材50之胞腔區域55與形成非偏光區域12、非相位差區域76及非胞腔區域56之硬化性樹脂(X)之硬化物之間賦予優異的密接性,故可較佳使用。於以下具體例示可較佳使用之脂環式環氧化合物,但並不限定於此等化合物。
Compounds in which one or more hydrogen atoms of (CH 2 ) m in the above formula are removed and bonded to other chemical structures can become alicyclic epoxy compounds. One or more hydrogen atoms in (CH 2 ) m may be appropriately substituted with a linear alkyl group such as a methyl group or an ethyl group. Among the alicyclic epoxy compounds, epoxy compounds with oxabicyclohexane ring (where m=3 in the above formula) or oxabicycloheptane ring (where m=4 in the above formula) can be used for The
[a]下述式(IV)所示之環氧基環己烷羧酸環氧基環己基甲基酯類: [a] The epoxy cyclohexyl methyl esters of epoxy cyclohexane carboxylic acid represented by the following formula (IV):
[式(IV)中,R8及R9相互獨立地表示氫原子或碳數1至5的直鏈狀烷基]。 [In formula (IV), R 8 and R 9 independently represent a hydrogen atom or a linear alkyl group having 1 to 5 carbon atoms].
[b]下述式(V)所示之烷二醇之環氧基環己烷羧酸酯類: [b] The epoxy cyclohexane carboxylates of alkanediol represented by the following formula (V):
[式(V)中,R10及R11相互獨立地表示氫原子或碳數1至5的直鏈狀烷基,n表示2至20的整數]。 [In formula (V), R 10 and R 11 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]下述式(VI)所示之二羧酸之環氧基環己基甲基酯類: [c] Epoxy cyclohexyl methyl esters of dicarboxylic acids represented by the following formula (VI):
[式(VI)中,R12及R13相互獨立地表示氫原子或碳數1至5的直鏈狀烷基,p表示2至20的整數]。 [In formula (VI), R 12 and R 13 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]下述式(VII)所示之聚乙二醇之環氧基環己基甲基醚類: [d] Epoxy cyclohexyl methyl ethers of polyethylene glycol represented by the following formula (VII):
[式(VII)中,R14及R15相互獨立地表示氫原子或碳數1至5的直鏈狀烷基,q表示2至10的整數]。 [In the formula (VII), R 14 and R 15 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]下述式(VIII)所示之烷二醇之環氧基環己基甲基醚類: [e] The epoxy cyclohexyl methyl ethers of alkanediol represented by the following formula (VIII):
[式(VIII)中,R16及R17相互獨立地表示氫原子或碳數1至5的直鏈狀烷基,r表示2至20的整數]。 [In formula (VIII), R 16 and R 17 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]下述式(IX)所示之二環氧三螺化合物: [f] Diepoxy trispiro compound represented by the following formula (IX):
[式(IX)中,R18及R19相互獨立地表示氫原子或碳數1至5的直鏈狀烷基]。 [In formula (IX), R 18 and R 19 independently represent a hydrogen atom or a linear alkyl group having 1 to 5 carbon atoms].
[g]下述式(X)所示之二環氧單螺化合物: [g] Diepoxy monospiro compound represented by the following formula (X):
[式(X)中,R20及R21相互獨立地表示氫原子或碳數1至5的直鏈狀烷基]。 [In the formula (X), R 20 and R 21 independently represent a hydrogen atom or a linear alkyl group having 1 to 5 carbon atoms].
[h]下述式(XI)所示之乙烯基環己烯二環氧化物類: [h] Vinyl cyclohexene diepoxides represented by the following formula (XI):
[式(XI)中,R22表示氫原子或碳數1至5的直鏈狀烷基]。 [In formula (XI), R 22 represents a hydrogen atom or a linear alkyl group having 1 to 5 carbon atoms].
[i]下述式(XII)所示之環氧基環戊基醚類: [i] Epoxy cyclopentyl ethers represented by the following formula (XII):
[式(XII)中,R23及R24相互獨立地表示氫原子或碳數1至5的直鏈狀烷基]。 [In formula (XII), R 23 and R 24 independently represent a hydrogen atom or a linear alkyl group having 1 to 5 carbon atoms].
[j]下述式(XIII)所表示之二環氧基三環癸烷類: [j] Diepoxytricyclodecanes represented by the following formula (XIII):
[式(XIII)中,R25表示氫原子或碳數1至5的直鏈狀烷基]。 [In the formula (XIII), R 25 represents a hydrogen atom or a linear alkyl group having 1 to 5 carbon atoms].
脂肪族環氧化合物可舉例如脂肪族多元醇或其環氧烷加成物之聚縮水甘油基醚。更具體而言可舉例如:1,4-丁二醇之二縮水甘油基醚;1,6-己二醇之二縮水甘油基醚;甘油之三縮水甘油基醚;三羥甲基丙烷之三縮水甘油基醚;聚乙二醇之二縮水甘油基醚;丙二醇之二縮水甘油基醚;藉由對乙二醇、丙二醇或甘油等脂肪族多元醇加成一種或兩種以上之環氧烷(環氧乙烷或環氧丙烷)所得之聚醚多元醇之聚縮水甘油基醚等。 Examples of the aliphatic epoxy compound include polyglycidyl ethers of aliphatic polyols or alkylene oxide adducts thereof. More specifically, for example, the diglycidyl ether of 1,4-butanediol; the diglycidyl ether of 1,6-hexanediol; the triglycidyl ether of glycerol; the trimethylolpropane Triglycidyl ether; diglycidyl ether of polyethylene glycol; diglycidyl ether of propylene glycol; by adding one or more epoxy resins to aliphatic polyols such as ethylene glycol, propylene glycol or glycerin Polyglycidyl ether of polyether polyol derived from alkyl (ethylene oxide or propylene oxide).
氫化環氧化合物為藉由使由對芳香族多元醇之芳香環進行氫化反應所得之脂環式多元醇與環氧氯丙烷反應所得者。芳香族多元醇可舉例如:雙 酚A、雙酚F、雙酚S等雙酚型化合物;苯酚酚醛清漆樹脂、甲酚酚醛清漆樹脂、羥基苯甲醛苯酚酚醛清漆樹脂等酚醛清漆型樹脂;四羥基二苯基甲烷、四羥基二苯基酮、聚乙烯苯酚等多官能型之化合物。氫化環氧化合物之中之較佳者可舉例如氫化之雙酚A之二縮水甘油基醚。 The hydrogenated epoxy compound is obtained by reacting an alicyclic polyol obtained by hydrogenating the aromatic ring of an aromatic polyol with epichlorohydrin. Examples of aromatic polyols include: double Bisphenol-type compounds such as phenol A, bisphenol F, and bisphenol S; phenol novolak resin, cresol novolak resin, hydroxybenzaldehyde phenol novolak resin, and other novolac resins; tetrahydroxydiphenylmethane, tetrahydroxydiphenyl Polyfunctional compounds such as phenyl ketone and polyvinyl phenol. A preferable one among the hydrogenated epoxy compounds includes, for example, the diglycidyl ether of hydrogenated bisphenol A.
硬化性樹脂(X)亦可在含有環氧化合物等活性能量線硬化性化合物的同時含有(甲基)丙烯酸系化合物等。藉由併用(甲基)丙烯酸系化合物,可期待提高偏光片10之偏光區域11、相位差層71的相位差區域75及第一補強材50之胞腔區域55與形成非偏光區域12、非相位差區域76及非胞腔區域56之硬化性樹脂(X)之硬化物之間的密接性、硬化性樹脂(X)之硬化物之硬度及機械強度之效果,並且,亦可使硬化性樹脂(X)之黏度、硬化速度等的調整變得更容易進行。
「(甲基)丙烯酸」係指選自由丙烯酸及甲基丙烯酸所組成之群組中的至少一者之意。
The curable resin (X) may contain a (meth)acrylic compound and the like together with an active energy ray curable compound such as an epoxy compound. By using a (meth)acrylic compound in combination, it can be expected to increase the
含有硬化性樹脂(X)之硬化性樹脂組成物較佳為含有聚合起始劑。聚合起始劑可舉例如光陽離子系聚合起始劑等陽離子系聚合起始劑或自由基聚合起始劑。光陽離子系聚合起始劑為藉由可見光、紫外線、X射線、電子射線等活性能量線的照射而產生陽離子種或路易士酸並使環氧基的聚合反應開始者。如上所述,硬化性樹脂(X)較佳為藉由紫外線之照射而硬化的紫外線硬化性樹脂,由於硬化性樹脂(X)以含有脂環式環氧化合物為佳,故於此情形之聚合起始劑較佳為藉由紫外線之照射而產生陽離子種或路易士酸者。 The curable resin composition containing the curable resin (X) preferably contains a polymerization initiator. Examples of the polymerization initiator include cationic polymerization initiators such as photocationic polymerization initiators or radical polymerization initiators. The photocationic polymerization initiator is one that generates cationic species or Lewis acid by irradiation with active energy rays such as visible light, ultraviolet rays, X-rays, and electron rays, and initiates the polymerization reaction of epoxy groups. As described above, the curable resin (X) is preferably an ultraviolet curable resin that is cured by ultraviolet radiation. Since the curable resin (X) preferably contains an alicyclic epoxy compound, the polymerization in this case The initiator is preferably one that generates cationic species or Lewis acid by irradiation with ultraviolet rays.
硬化性樹脂組成物亦可進一步含有光增敏劑、聚合促進劑、離子捕集劑、抗氧化劑、鏈轉移劑、增黏劑、熱塑性樹脂、填充劑、流動調整劑、塑化劑、消泡劑、抗靜電劑、整平劑等添加劑。 The curable resin composition may further contain photosensitizers, polymerization accelerators, ion traps, antioxidants, chain transfer agents, tackifiers, thermoplastic resins, fillers, flow regulators, plasticizers, and defoamers Additives such as agents, antistatic agents, leveling agents, etc.
(填充材) (Filling material)
可設於第一補強材50及第二補強材60之填充材若為具有透光性且可埋填第一補強材50之第一胞腔51之內部空間及第二補強材60之第二胞腔61的內部空間者即可,並無特別限定。填充材較佳為與構成第一補強材50之胞腔間壁53及第二補強材60的胞腔間壁63之材料不同的材料,而以含有樹脂材料為更佳。該樹脂材料可舉例如選自由熱塑性樹脂、熱硬化性樹脂或活性能量線硬化性樹脂等硬化性樹脂等所組成之群組中之一種以上,亦可為黏著劑(pressure-sensitive adhesive)或接著劑。
If the filling material that can be set in the first reinforcing
熱塑性樹脂可舉例如:鏈狀聚烯烴系樹脂(聚丙烯系樹脂等)、環狀聚烯烴系樹脂(降莰烯系樹脂等)等聚烯烴系樹脂;三乙酸纖維素、二乙酸纖維素等纖維素酯系樹脂;聚對酞酸乙二酯、聚萘二甲酸乙二酯、聚對酞酸丁二酯等聚酯系樹脂;聚碳酸酯系樹脂;(甲基)丙烯酸系樹脂;聚苯乙烯系樹脂;聚醚系樹脂;聚胺酯系樹脂;聚醯胺系樹脂、聚醯亞胺系樹脂;氟系樹脂等。 Examples of thermoplastic resins include polyolefin resins such as chain polyolefin resins (polypropylene resins, etc.), cyclic polyolefin resins (norbornene resins, etc.); cellulose triacetate, cellulose diacetate, etc. Cellulose ester resins; polyester resins such as polyethylene terephthalate, polyethylene naphthalate, and polybutylene terephthalate; polycarbonate resins; (meth)acrylic resins; poly Styrene-based resin; polyether-based resin; polyurethane-based resin; polyamide-based resin, polyimide-based resin; fluorine-based resin, etc.
硬化性樹脂可舉例如上述之硬化性樹脂(X)。 Examples of the curable resin include the above-mentioned curable resin (X).
黏著劑係藉由將其本身貼附於被黏著物而展現接著性者,即所謂的被稱為感壓型接著劑者。黏著劑可舉例如含有(甲基)丙烯酸系聚合物、聚矽氧系聚合物、聚酯系聚合物、聚胺酯系聚合物、聚醚系聚合物、或橡膠系聚合物等聚合物作為主成分者。於本說明書中,所謂主成分,係指於黏著劑之總固體成分中含有50質量%以上之成分。黏著劑可為活性能量線硬化型、熱硬化型,亦可藉由活性能量線照射或加熱來調整交聯度或接著力。 Adhesives are those that exhibit adhesiveness by attaching themselves to the adherend, so-called pressure-sensitive adhesives. The adhesive may, for example, contain polymers such as (meth)acrylic polymers, silicone polymers, polyester polymers, polyurethane polymers, polyether polymers, or rubber polymers as main components. By. In this specification, the so-called main component refers to a component that contains 50% by mass or more in the total solid content of the adhesive. The adhesive can be an active energy ray hardening type or a thermal hardening type, and the crosslinking degree or adhesive force can also be adjusted by active energy ray irradiation or heating.
接著劑係含有硬化性之樹脂成分者,且係感壓型接著劑(黏著劑)以外的接著劑。接著劑可舉例如:使硬化性之樹脂成分溶解或分散於水中而成之 水系接著劑、含有活性能量線硬化性化合物之活性能量線硬化性接著劑、熱硬化性接著劑等。 Adhesives are those containing curable resin components and are adhesives other than pressure-sensitive adhesives (adhesives). Adhesives can be, for example, made by dissolving or dispersing a curable resin component in water Water-based adhesives, active energy ray curable adhesives containing active energy ray curable compounds, thermosetting adhesives, etc.
接著劑亦可使用偏光板之技術領域中泛用的水系接著劑。水系接著劑所含之樹脂成分可舉例如聚乙烯醇系樹脂、胺酯系樹脂等。活性能量線硬化性接著劑,可舉例如藉由紫外線、可見光、電子射線、X射線等活性能量線之照射而硬化的組成物。活性能量線硬化性接著劑亦可使用上述之含有硬化性樹脂(X)之硬化性樹脂組成物。熱硬化性接著劑可舉例如含有環氧系樹脂、聚矽氧系樹脂、酚系樹脂、三聚氰胺系樹脂等作為主成分者。 As the adhesive, a water-based adhesive commonly used in the technical field of polarizing plates can also be used. Examples of the resin component contained in the water-based adhesive include polyvinyl alcohol-based resins and urethane-based resins. Examples of the active energy ray curable adhesive include compositions that are cured by irradiation with active energy rays such as ultraviolet rays, visible light, electron beams, and X-rays. The active energy ray curable adhesive can also use the curable resin composition containing the curable resin (X) described above. Examples of thermosetting adhesives include epoxy resins, silicone resins, phenol resins, melamine resins, and the like as main components.
(偏光片複合體(1)之製造方法) (Method for manufacturing polarizer composite (1))
圖5至圖7係示意性顯示偏光片複合體40(圖1(a))之製造方法之一例的概略截面圖。於圖5至圖7中雖顯示製得圖1(a)所示之偏光片複合體40的情形,然而圖2(a)及(b)所示之偏光片複合體40亦可藉由下述所說明的方法來製造。偏光片複合體40例如可使用「於整體具有相同視感度校正偏光度(Py)且不具非偏光區域12之原料偏光片20(圖5(a))」、「作為原料相位差層之整體為相位差區域之聚合硬化層85(圖5(b))」及「僅由胞腔區域55構成而且不具非胞腔區域56的補強材形成用結構體58(以下,有時亦稱為「結構體58」)」來製造。
5 to 7 are schematic cross-sectional views schematically showing an example of the manufacturing method of the polarizer composite 40 (FIG. 1(a)). Although FIG. 5 to FIG. 7 show the production of the
原料偏光片20由於僅由上述偏光片10之偏光區域11形成,故原料偏光片20之厚度較佳為與偏光片10之偏光區域11相同厚度亦即15μm以下。聚合硬化層85會成為上述之相位差層71之相位差區域75,故聚合硬化層85之厚度較佳為具有與相位差層71之相位差區域75相同的厚度。結構體58由於會成為上述之第一補強材50之胞腔區域55,故較佳為具有與第一補強材50之胞腔區域55相同厚度。
Since the
偏光片複合體40例如可由如下的步驟製造。首先,在原料偏光片20之一面,以對原料偏光片20而言可剝離地設置第一支持層25(圖5(a))。在基材層84上將聚合性液晶化合物聚合硬化,而準備在基材層84上形成有整體為相位差區域的聚合硬化層85的附基材層之聚合硬化層80(圖5(b))。在第一支持層25上的原料偏光片20上,隔著未圖示之貼合層而積層附基材層之聚合硬化層80的聚合硬化層85側(圖5(c)),剝離基材層84(圖5(d))。在剝離基材層84而露出的面(聚合硬化層85側的面)形成結構體58(圖6(a))。藉此,得到依序積層有結構體58、聚合硬化層85、原料偏光片20、及第一支持層25之第一積層體31(圖6(a))。結構體58例如可藉由使用樹脂材料或無機氧化物,於聚合硬化層85表面形成會劃分第一胞腔51之胞腔間壁53而製得。
The
使用樹脂材料來形成胞腔間壁53的方法並無特別限定,可舉例如:噴墨印刷、網版印刷、凹版印刷等印刷法;光蝕刻法;使用噴嘴或模具等之塗佈法等。於上述方法中亦可使用將樹脂材料與溶劑、添加劑等混合而成之樹脂組成物。添加劑可舉例如:整平劑、抗氧化劑、塑化劑、增黏劑、有機或無機的填充劑、顏料、抗老化劑、紫外線吸收劑、抗氧化劑等。胞腔間壁53亦可藉由對經印刷或塗佈之樹脂組成物,視需要進行用以固化或硬化的處理來形成。
The method of forming the
使用無機氧化物來形成胞腔間壁53之方法並無特別限定,例如可藉由蒸鍍無機氧化物來形成。
The method of using an inorganic oxide to form the
對第一積層體31,藉由衝切、切出、切削、或雷射切割等而形成在積層方向貫穿的貫穿孔32(圖6(b))。藉此,得到「於原料偏光片20形成有貫穿孔22的具開孔之偏光片21」、「於聚合硬化層85形成有貫穿孔72的具開孔之相位差層81」及「於結構體58各別形成有貫穿孔52的具開孔之結構體59」。
於形成有貫穿孔32之第一積層體31之具開孔之結構體59側(具開孔之相位差層81之相反側),積層第二支持層26(圖6(c))。第二支持層26係以封住具開孔之相位差層81之貫穿孔72之一側的方式設置。
For the
之後,剝離第一支持層25(圖7(a)),於具開孔之偏光片21的貫穿孔22、具開孔之相位差層81的貫穿孔72及具開孔之結構體59的貫穿孔52填充含硬化性樹脂(X)之硬化性樹脂組成物,藉由照射活性能量線而使貫穿孔22、72、52內的硬化性樹脂(X)硬化,於具開孔之偏光片21的貫穿孔22、具開孔之相位差層81的貫穿孔72、具開孔之結構體59的貫穿孔52形成硬化性樹脂(X)之硬化物(圖7(b))。藉此,於具開孔之偏光片21之貫穿孔22、具開孔之相位差層81的貫穿孔72及具開孔之結構體59之貫穿孔52形成硬化性樹脂(X)之硬化物,於第二支持層26上,依序形成第一補強材50、相位差層71、及偏光片10(圖7(b))。圖7(b)所示的偏光片10中,具開孔之偏光片21之貫穿孔22以外的區域成為偏光區域11,且設置有硬化物之貫穿孔22的區域成為非偏光區域12。圖7(b)所示的相位差層71中,具開孔之相位差層81的貫穿孔72以外的區域係成為相位差區域75,設置有硬化物的貫穿孔72的區域成為非相位差區域76。圖7(b)所示之第一補強材50係設置在偏光片10的一面側,其中具開孔之結構體59的貫穿孔52以外的區域成為胞腔區域55,且設置有硬化物之貫穿孔52的區域成為非胞腔區域56。
After that, the
接著,在偏光片10的相位差層71側之相反側,形成第二補強材60,在第二支持層26上形成偏光片複合體40(圖5(c))。第二補強材60藉由例如上述之形成結構體58的胞腔間壁53的方法中所說明之方法形成胞腔間壁63即可。於形成第二補強材60後,亦可剝離第二支持層26。
Next, on the side opposite to the
將硬化性樹脂組成物填充於具開孔之偏光片21之貫穿孔22,具開孔之相位差層81的貫穿孔72及具開孔之結構體59之貫穿孔52的方法並無特別限定。例如,可使用分注器或分配器等將硬化性樹脂組成物注入第二積層體33的貫穿孔22、72、52中;亦可一邊於具開孔之結構體59上的表面上塗佈硬化性樹脂組成物,一邊將硬化性樹脂組成物填充於貫穿孔22、72、52中。
The method of filling the through
第一支持層25可為後述之原料偏光片20之製造時所使用的支持層,亦可使用當塗佈硬化性樹脂組成物時所使用之上述基材膜。或者,亦可為於原料偏光片20藉由水等揮發性液體所貼合之可剝離的支持層,亦可為對原料偏光片20而言可剝離的黏著片。設置第二支持層26的方法,可列舉作為設置第一支持層25的方法所例示的方法。
The
如上述般,藉由使原料偏光片20之厚度為15μm以下,可使設置於具開孔之偏光片21的貫穿孔22的深度亦在15μm以下。如在偏光片複合體40中所說明般,於偏光片複合體40中之包含偏光區域11、相位差區域75、及胞腔區域55之積層結構部分之厚度較佳為30μm以下,故屬於原料相位差層之聚合硬化層85之厚度及結構體58之厚度之合計厚度較佳亦為15μm以下。藉此,可將貫穿孔22、72、52之合計深度設為30μm以下。因此,可在短時間進行對具開孔之偏光片21的貫穿孔22、具開孔之相位差層71的貫穿孔72、及具開孔之結構體59的貫穿孔52填充硬化性樹脂組成物,以及填充於貫穿孔22、72、52的硬化性樹脂組成物所含之硬化性樹脂(X)之硬化處理。
As described above, by setting the thickness of the
(偏光片複合體(2)之製造方法) (Method for manufacturing polarizer composite (2))
圖8至圖11係示意性顯示偏光片複合體41(圖4)之製造方法之一例的概略截面圖。在圖8至圖11中,顯示製得圖4所示之偏光片複合體41的情形。偏光
片複合體41可使用上述偏光片複合體40的製造中所使用的原料偏光片20、聚合硬化層85、及結構體58而製造。
8 to 11 are schematic cross-sectional views schematically showing an example of the method of manufacturing the polarizer composite 41 (FIG. 4 ). In FIGS. 8 to 11, the state where the
偏光片複合體41例如可由如下的步驟製造。首先,在原料偏光片20的一面,以對原料偏光片20而言可剝離地設置第一支持層25後,在原料偏光片20的另一面形成結構體58,而準備第二積層體33(圖8(a))。結構體58可藉由上述所說明的方法形成。在基材層84上將聚合性液晶化合物聚合硬化,而準備在基材層84上形成有整體為相位差區域之聚合硬化層85之附基材層之聚合硬化層80(圖8(b))。
The
在準備之第二積層體33的結構體58側,隔著未圖示之貼合層而積層附基材層之聚合硬化層80的聚合硬化層85側(圖8(c))。此時,貼合層較佳為以進入結構體58之第一胞腔51的內部空間及複數個第一胞腔51之間之間隙的方式設置。藉此,製得依序積層有基材層84、聚合硬化層85、結構體58、原料偏光片20、及第一支持層25之第三積層體34(圖8(c))。對第三積層體34,藉由衝切、切出、切削、或雷射切割等而形成在積層方向貫穿的貫穿孔35(圖8(d)),剝離基材層84(圖8(e))。藉此,得到「於原料偏光片20形成有貫穿孔22的具開孔之偏光片21」、「於結構體58形成有貫穿孔52的具開孔之結構體59」及「於聚合硬化層85形成有貫穿孔72的具開孔之相位差層81」。
On the
接著,於剝離基材層84而露出之側(具開孔之相位差層81側),積層第三支持層27(圖9(a)),剝離第一支持層25(圖9(b))。第三支持層27係以封住具開孔之相位差層81的貫穿孔72之一側的方式設置。之後,在具開孔之偏光片21的貫穿孔22、具開孔之結構體59的貫穿孔52及具開孔之相位差層81的貫穿孔72中填充含硬化性樹脂(X)之硬化性樹脂組成物,藉由照射活性能量線
而使貫穿孔22、52、72內的硬化性樹脂(X)硬化,而於具開孔之偏光片21之貫穿孔22、具開孔之結構體59之貫穿孔52及具開孔之相位差層81的貫穿孔72形成硬化性樹脂(X)之硬化物(圖9(c))。藉此,在第三支持層27上,依序形成相位差層71、第一補強材50、及偏光片10(圖9(c))。圖9(c)所示的相位差層71中,具開孔之相位差層81的貫穿孔72以外的區域成為相位差區域75,設置有硬化物的貫穿孔72的區域成為非相位差區域76。圖9(c)所示之第一補強材50係設於偏光片10的一面側,其中具開孔之結構體59的貫穿孔52以外的區域成為胞腔區域55,設置有硬化物的貫穿孔52的區域成為非胞腔區域56。圖9(c)所示的偏光片10中,具開孔之偏光片21之貫穿孔22以外的區域成為偏光區域11,設置有硬化物之貫穿孔22的區域成為非偏光區域12。
Next, on the side where the
接著,在偏光片10之第一補強材50側之相反側,形成第二補強材60,在第三支持層27上形成偏光片複合體40(圖9(d))。第二補強材60例如藉由形成上述之結構體58的胞腔間壁53的方法中所說明的方法形成胞腔間壁63即可。形成第二補強材60後,可剝離第三支持層27。
Next, on the side opposite to the first reinforcing
在具開孔之偏光片21之貫穿孔22、具開孔之結構體59之貫穿孔52及具開孔之相位差層81之貫穿孔72填充硬化性樹脂組成物的方法,可列舉在偏光片複合體40的製造方法中所說明之填充方法。可一邊在具開孔之偏光片21的表面上塗佈硬化性樹脂組成物,一邊在貫穿孔22、52、72中填充硬化性樹脂組成物。設置第三支持層27的方法,可列舉作為設置第一支持層25的方法所例示的方法。
The method of filling the through
(原料偏光片) (Material Polarizer)
原料偏光片20較佳為不易因用以使填充於貫穿孔22之硬化性樹脂組成物中之硬化性樹脂(X)硬化所照射之活性能量線而顯著變質者。如此之原料偏光片20例如為使雙色性色素吸附配向於聚乙烯醇系樹脂膜而成的薄膜、或於聚合性液晶化合物之硬化層中配向有雙色性色素者,此等之製造方法係如上述偏光區域11所說明者。
The
(原料相位差層) (Raw material retardation layer)
原料相位差層係由整體具有相位差特性之相位差區域所形成。原料相位差層,例如,可具有上述所說明的相位差區域75所具有之相位差特性。原料相位差層可具有例如作為1/4波長板、1/2波長板、逆波長分散性的1/4波長板或正C板而發揮功能之相位差特性。
The raw material retardation layer is formed by a retardation area having a retardation characteristic as a whole. The raw material retardation layer, for example, may have the retardation characteristic of the
原料相位差層例如為將熱塑性樹脂單軸延伸或雙軸延伸而成的延伸膜、或聚合性液晶性化合物的聚合硬化層等。 The raw material retardation layer is, for example, a stretched film obtained by uniaxially or biaxially stretching a thermoplastic resin, or a polymerized cured layer of a polymerizable liquid crystal compound, or the like.
構成延伸膜之熱塑性樹脂較佳為具有透光性(較佳為光學上透明)的熱塑性樹脂。具體而言,可列舉:鏈狀聚烯烴系樹脂(聚乙烯系樹脂、聚丙烯系樹脂等)、環狀聚烯烴系樹脂((降莰烯系樹脂等)等聚烯烴系樹脂;三乙酸纖維素、二乙酸纖維素、纖維素乙酸酯丙酸酯、纖維素乙酸酯丁酸酯等纖維素酯系樹脂;聚對酞酸乙二酯、聚對酞酸丁二酯、聚萘二甲酸乙二酯、聚萘二甲酸丁二酯、聚對酞酸丙二酯、聚萘二甲酸丙二酯、聚對酞酸環己烷二甲酯、聚萘二甲酸環己烷二甲酯等聚酯系樹脂;聚碳酸酯系樹脂;(甲基)丙烯酸系樹脂;聚苯乙烯系樹脂;或此等之混合物、共聚物等。 The thermoplastic resin constituting the stretched film is preferably a thermoplastic resin having translucency (preferably optically transparent). Specifically, examples include: polyolefin resins such as chain polyolefin resins (polyethylene resins, polypropylene resins, etc.), cyclic polyolefin resins ((norbornene resins, etc.); triacetate fiber Cellulose, cellulose diacetate, cellulose acetate propionate, cellulose acetate butyrate and other cellulose ester resins; polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate Ethylene formate, Polybutylene naphthalate, Polypropylene terephthalate, Polypropylene naphthalate, Polycyclohexane dimethyl terephthalate, Polycyclohexane dimethyl naphthalate Polyester resins; polycarbonate resins; (meth)acrylic resins; polystyrene resins; or mixtures and copolymers of these.
構成聚合硬化層之聚合性液晶化合物係具有聚合性反應基並且顯示液晶性的化合物。聚合性反應基可列舉在原料偏光片中所例示的聚合性反 應基。聚合性液晶化合物的種類並無特別限定,可使用棒狀液晶化合物、圓盤狀液晶化合物及此等的混合物。聚合性液晶化合物的液晶性中,液晶性可為熱致性液晶,亦可為溶致性液晶,相秩序結構可為向列型液晶,亦可為層列型液晶。 The polymerizable liquid crystal compound constituting the polymerized hardened layer is a compound that has a polymerizable reactive group and exhibits liquid crystallinity. The polymerizable reactive group can include the polymerizable reactive groups exemplified in the raw material polarizer. Yingji. The type of the polymerizable liquid crystal compound is not particularly limited, and rod-shaped liquid crystal compounds, discotic liquid crystal compounds, and mixtures thereof can be used. Among the liquid crystallinity of the polymerizable liquid crystal compound, the liquid crystallinity may be a thermotropic liquid crystal or a lyotropic liquid crystal, and the phase order structure may be a nematic liquid crystal or a smectic liquid crystal.
原料相位差層可藉由[v]例如在基材膜上形成的配向層上,塗佈含有聚合性液晶化合物的相位差層形成用組成物,使聚合性液晶化合物聚合並硬化的方法;[vi]在基材層上,塗佈相位差層形成用組成物,形成塗膜,將該塗膜與基材層一起延伸的方法;來形成。基材層可列舉在原料偏光片中所說明之上述的[ii]所使用的基材膜。 The raw material retardation layer can be obtained by [v], for example, a method in which a composition for forming a retardation layer containing a polymerizable liquid crystal compound is coated on an alignment layer formed on a substrate film to polymerize and harden the polymerizable liquid crystal compound; [ vi] A method of applying the composition for forming a retardation layer on the substrate layer to form a coating film, and extending the coating film together with the substrate layer; to form. Examples of the substrate layer include the substrate film used in the above-mentioned [ii] described in the raw material polarizer.
構成原料相位差層之延伸膜及聚合硬化層,可舉例如,國際公開第2018/003416號所記載的相位差層。 The stretched film and the polymerized hardened layer constituting the material retardation layer include, for example, the retardation layer described in International Publication No. 2018/003416.
(補強材形成用結構體(結構體)) (Structure for forming reinforcement material (structure))
結構體58為僅由胞腔區域55所構成而不具非胞腔區域56的結構體。結構體58可藉由如上述般地使用樹脂材料或無機氧化物以形成會劃分第一胞腔51之胞腔間壁53而得。可作為樹脂材料及無機氧化物使用的材料、及使用此等形成胞腔間壁53的方法,可舉例如上述所例示的材料及方法。
The
<光學積層體> <Optical Laminate>
圖10及圖11係示意性顯示本實施型態之光學積層體之一例的概略截面圖。光學積層體為於圖1及圖4所示之偏光片複合體40、41之單面側或兩面側具有保護層者。
10 and 11 are schematic cross-sectional views schematically showing an example of the optical laminate of this embodiment. The optical laminate is one having a protective layer on one side or both sides of the
(光學積層體(1)) (Optical laminate (1))
圖10為示意性顯示本實施形態的光學積層體的一例之概略截面圖。圖10所示之光學積層體45係於圖1(a)所示之偏光片複合體40之兩面側具有保護層
17、18。光學積層體45亦可為僅於偏光片複合體40之單面側具有保護層17(或18)者。光學積層體45所含之偏光片複合體40亦可為圖2(a)或(b)所示之偏光片複合體40。保護層17、18可經由黏著劑層或接著劑層等貼合層而設置於偏光片複合體40上。於此情形,例如可經由貼合層而於偏光片複合體40積層薄膜狀的保護層。保護層17、18亦可不經由貼合層而以直接相接的方式設置於偏光片複合體40。於此情形,例如可藉由將含有構成保護層17、18之樹脂材料的組成物塗佈於偏光片複合體40上,並使此塗佈層固化或硬化等而形成保護層17、18。
Fig. 10 is a schematic cross-sectional view schematically showing an example of the optical laminate of the present embodiment. The optical laminate 45 shown in FIG. 10 has protective layers on both sides of the
當光學積層體45為將保護層17、18經由貼合層而設置於偏光片複合體40之第一補強材50側及第二補強材60側者時,較佳為以埋填第一補強材50之第一胞腔51的內部空間、及複數個第一胞腔51間的間隙、第二補強材60之第二胞腔61的內部空間及複數個第二胞腔61之間之間隙等之方式設置貼合層而形成保護層17、18。當光學積層體45為以直接相接的方式將保護層17、18設置於偏光片複合體40之第一補強材50側及第二補強材60側者時,較佳為以埋填第一補強材50之第一胞腔51的內部空間及複數個第一胞腔51間的間隙、第二補強材60之第二胞腔61的內部空間及複數個第二胞腔61之間之間隙等之方式設置含有構成保護層17、18之樹脂材料的組成物而形成保護層17、18。
When the optical layered body 45 is one in which the
(光學積層體(2)) (Optical laminate (2))
圖11為示意性顯示本實施形態的光學積層體的一例之概略截面圖。圖11所示之光學積層體46係於圖4所示之偏光片複合體41之兩面側具有保護層17、18。光學積層體46亦可為僅於偏光片複合體41之單面側具有保護層17(或18)者。保護層17、18可經由黏著劑層或接著劑層等貼合層而設置於偏光片複合體
41上。於此情形,例如,隔著貼合層,於偏光片複合體41積層膜狀的保護層即可。保護層17、18亦可不經由貼合層而以直接相接的方式設置於偏光片複合體41。於此情形,例如,可將含有構成保護層17、18之樹脂材料的組成物塗佈於偏光片複合體41上,並將該塗佈層藉由固化或硬化等而形成保護層17、18。
FIG. 11 is a schematic cross-sectional view schematically showing an example of the optical layered body of this embodiment. The optical laminate 46 shown in FIG. 11 has
光學積層體45為將保護層18經由貼合層而設置在偏光片複合體41之第二補強材60側者的情形,較佳為以埋填第二補強材60之第二胞腔61的內部空間及複數個第二胞腔61之間之間隙等的方式設置貼合層,而形成保護層18。光學積層體45為在偏光片複合體41之第二補強材60側以直接相接的方式設置有保護層18者的情形,較佳為以埋填第二補強材60之第二胞腔61的內部空間及複數個第二胞腔61之間之間隙等的方式,設置含有構成保護層18的樹脂材料的組成物,而形成保護層18。
The optical laminate 45 is a case where the
光學積層體45、46中之保護層17、18可為在第一補強材50、相位差層71、及第二補強材60上各別直接設置之活性能量線硬化性樹脂組成物(硬化性樹脂(X))之硬化物層。構成屬於硬化物層的保護層17、18的硬化性樹脂(X)若為藉由紫外線、可見光、電子射線、X射線等活性能量線的照射而硬化的樹脂即可,無特別限定,可舉例如上述所說明的硬化性樹脂(X)。構成保護層17、18之硬化性樹脂(X)之硬化物可與偏光片10的非偏光區域12所含之硬化物相同。
The protective layers 17, 18 in the optical laminates 45, 46 may be active energy ray-curable resin compositions directly provided on the first reinforcing
為了要製造光學積層體45、46,例如,可在偏光片複合體40、41之第一補強材50、相位差層71、及第二補強材60側塗佈含有硬化性樹脂(X)的硬化性樹脂組成物,藉由照射活性能量線,而使硬化性樹脂組成物所含之硬化性樹脂(X)硬化。藉此,可在第一補強材50、相位差層71及第二補強材60上各
別形成屬於硬化性樹脂組成物所含之硬化性樹脂(X)之硬化物層的保護層17、18,得到光學積層體45、46。
In order to manufacture the optical laminates 45, 46, for example, the first reinforcing
光學積層體45、46中,可將保護層17、18之一者設為經由貼合層而設置的保護層,另一者設為不經由貼合層而設置的保護層。光學積層體45、46所含之保護層17、18可互為相同,亦可互為相異。
In the optical layered bodies 45 and 46, one of the
於塗佈硬化性樹脂組成物時,能以覆蓋藉由塗佈所形成之塗佈層表面的方式設置基材膜。於此情形,亦可將基材膜作為保護層17、18,並將硬化性樹脂(X)之硬化物層作為用以將保護層17、18貼合於偏光片複合體40、41的貼合層。基材膜亦可於硬化性樹脂(X)硬化後剝離。
When coating the curable resin composition, the base film can be provided so as to cover the surface of the coating layer formed by coating. In this case, the base film may be used as the
(保護層) (The protective layer)
保護層17、18較佳為光可穿透的樹脂層,亦可為樹脂膜,亦可為塗佈含樹脂材料之組成物所形成的塗佈層。樹脂層所使用之樹脂較佳為透明性、機械強度、熱安定性、水分阻隔性、等向性、延伸性等優異的熱塑性樹脂。熱塑性樹脂可舉例如,於上述原料偏光片20之製造中可使用之構成基材膜的熱塑性樹脂。當光學積層體45、46於兩面具有保護層17、18時,保護層17、18之樹脂組成可互為相同,亦可互為相異。
The protective layers 17, 18 are preferably light-permeable resin layers, may also be resin films, or may be coating layers formed by coating a composition containing a resin material. The resin used in the resin layer is preferably a thermoplastic resin excellent in transparency, mechanical strength, thermal stability, moisture barrier properties, isotropy, and extensibility. The thermoplastic resin may be, for example, a thermoplastic resin constituting a base film that can be used in the production of the above-mentioned
由薄型化的觀點考量,保護層17、18之厚度通常為200μm以下,較佳為150μm以下,更佳為100μm以下,可為80μm以下,亦可為60μm以下。保護層17、18之厚度通常為5μm以上,可為10μm以上,亦可為20μm以上。保護層17、18可具有相位差,亦可不具相位差。當光學積層體45、46於兩面具有保護層17、18時,保護層17、18之厚度可互為相同,亦可互為相異。
From the viewpoint of thinning, the thickness of the
(貼合層) (Laminated layer)
貼合層為黏著劑層或接著劑層。用以形成黏著劑層之黏著劑及用以形成接著劑層之接著劑,可舉例如為了構成上述填充材而使用的黏著劑及接著劑。 The bonding layer is an adhesive layer or an adhesive layer. The adhesive used to form the adhesive layer and the adhesive used to form the adhesive layer include, for example, the adhesives and adhesives used to form the above-mentioned filler.
<具有光學顯示元件用貼合層之積層體> <Laminate with bonding layer for optical display elements>
圖1及圖4所示之偏光片複合體40、41、圖10及圖11所示之光學積層體45、46可進一步具有光學顯示元件用貼合層,該光學顯示元件用貼合層係用以貼合於液晶顯示裝置或有機EL顯示裝置等顯示裝置之光學顯示元件(液晶面板、有機EL元件)。
The
於偏光片複合體40、41及光學積層體45、46中,當於第一補強材50表面或第二補強材60表面設置光學顯示元件用貼合層時,可使用構成光學顯示元件用貼合層之材料作為設置於第一補強材50及第二補強材60之填充材,而同時進行於第一補強材50之第一胞腔51的內部空間等及第二補強材60之第二胞腔61的內部空間等之填充材的填充、與光學顯示元件用貼合層的形成。
In the
10:偏光片 10: Polarizer
11:偏光區域 11: Polarized area
12:非偏光區域 12: Non-polarized area
22:貫穿孔 22: Through hole
40:偏光片複合體 40: Polarizer composite
50:第一補強材 50: The first reinforcing material
51:第一胞腔 51: first cell
52:貫穿孔 52: Through hole
53:胞腔間壁 53: Cell wall
55:胞腔區域 55: Cell cavity area
56:非胞腔區域 56: non-cell area
60:第二補強材 60: second reinforcing material
62:第二胞腔 62: second cell
63:胞腔間壁 63: Cell wall
71:相位差層 71: retardation layer
72:貫穿孔 72: Through hole
75:相位差區域 75: Phase difference area
76:非相位差區域 76: non-phase difference area
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