TW201805655A - Sheet-like optical film - Google Patents
Sheet-like optical film Download PDFInfo
- Publication number
- TW201805655A TW201805655A TW106122672A TW106122672A TW201805655A TW 201805655 A TW201805655 A TW 201805655A TW 106122672 A TW106122672 A TW 106122672A TW 106122672 A TW106122672 A TW 106122672A TW 201805655 A TW201805655 A TW 201805655A
- Authority
- TW
- Taiwan
- Prior art keywords
- film
- optical
- adhesive layer
- adhesive
- sheet
- Prior art date
Links
- 239000012788 optical film Substances 0.000 title claims abstract description 103
- 239000010408 film Substances 0.000 claims abstract description 255
- 230000003287 optical effect Effects 0.000 claims abstract description 82
- 239000012790 adhesive layer Substances 0.000 claims abstract description 63
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- 239000004973 liquid crystal related substance Substances 0.000 description 57
- 230000001070 adhesive effect Effects 0.000 description 56
- 239000000853 adhesive Substances 0.000 description 54
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- NIHNNTQXNPWCJQ-UHFFFAOYSA-N fluorene Chemical compound C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 description 8
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- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
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- 239000004925 Acrylic resin Substances 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
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- 239000001692 EU approved anti-caking agent Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
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- 239000005977 Ethylene Substances 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
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- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
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- 239000003112 inhibitor Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
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- LVWZTYCIRDMTEY-UHFFFAOYSA-N metamizole Chemical compound O=C1C(N(CS(O)(=O)=O)C)=C(C)N(C)N1C1=CC=CC=C1 LVWZTYCIRDMTEY-UHFFFAOYSA-N 0.000 description 1
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- 239000011148 porous material Substances 0.000 description 1
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- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 1
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- 238000004513 sizing Methods 0.000 description 1
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- 238000002834 transmittance Methods 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- 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
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/023—Optical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- 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
- B32B7/02—Physical, chemical or physicochemical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- 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
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/022—Mechanical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- 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
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- 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
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/02—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/42—Polarizing, birefringent, filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- Mechanical Engineering (AREA)
- Liquid Crystal (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Polarising Elements (AREA)
- Laminated Bodies (AREA)
Abstract
Description
本發明係有關於單片狀光學薄膜，例如有關於使用在片材對面板方式之製造設備的單片狀光學薄膜。The present invention relates to a monolithic optical film, for example, to a monolithic optical film used in a manufacturing method of a sheet-to-panel method.
將光學薄膜貼合於光學單元的方式有：依序積層有離型薄膜、黏著劑層、光學機能薄膜(具代表性者為偏光薄膜)及表面保護薄膜的光學薄膜係構製成卷狀。將從該卷狀光學薄膜送出的光學薄膜在保留離型薄膜下將黏著劑層、光學機能薄膜及表面保護薄膜沿寬度方向切斷(半切, half-cut)，並將離型薄膜從切斷後所得之光學薄膜剝離，再隔著已露出之黏著劑層將光學薄膜貼合於光學單元(以下亦稱「卷對面板方式」)(例如參照專利文獻1及2)。The method of bonding an optical film to an optical unit includes: sequentially laminating an optical film having a release film, an adhesive layer, an optical function film (a polarizing film as a representative), and a surface protection film in a roll shape. The optical film sent out from the roll-shaped optical film was cut in a width direction (half-cut) with the adhesive layer, the optical function film, and the surface protection film remaining under the release film, and the release film was cut from The obtained optical film is peeled off, and the optical film is bonded to an optical unit (hereinafter also referred to as a "roll-to-panel method") via the exposed adhesive layer (for example, refer to Patent Documents 1 and 2).
另一方面，和卷對面板方式不同的光學薄膜貼合方式有下述方式：隔著已剝離離型薄膜而露出的黏著劑層，將預先作成單片狀態的光學薄膜貼合於光學單元(以下亦稱「片材對面板方式」)(例如參照專利文獻3)。On the other hand, an optical film bonding method different from the roll-to-panel method has the following method: an optical film formed in advance in a single sheet state is bonded to an optical unit through an adhesive layer exposed through a release film peeled off ( Hereinafter, it is also referred to as "sheet-to-panel method" (for example, refer to Patent Document 3).
先行技術文献 專利文獻 專利文獻1：日本特開第2011-123208號公報 專利文獻2：日本特開第2015-049115號公報 專利文獻3：日本特開第2006-039238號公報Prior Technical Documents Patent Documents Patent Document 1: Japanese Patent Laid-Open No. 2011-123208 Patent Document 2: Japanese Patent Laid-Open No. 2015-049115 Patent Document 3: Japanese Patent Laid-Open No. 2006-039238
發明欲解決之課題 然而，在以液晶顯示面板為首的光學顯示面板之製造現場，新近出現的情形是不僅用卷對面板方式還併用片材對面板方式來製造相同結構之光學顯示面板。例如專利文獻2揭示，使用卷對面板方式來連續製造光學顯示面板，並對經判定為不良品的光學顯示面板施以重工處理。在不良品並不那麼常發生的情況下，於所述重工處理中在光學單元上貼合新的光學機能薄膜時可想見是使用片材對面板方式。又例如在必須短時間大量生產相同結構之光學顯示面板的情形時，亦可想見在卷對面板方式無法供應全部供給量下，會併用片材對面板方式。Problems to be Solved by the Invention However, at the manufacturing site of an optical display panel including a liquid crystal display panel, a newly emerged situation is to manufacture an optical display panel of the same structure using not only a roll-to-panel method but also a sheet-to-panel method. For example, Patent Document 2 discloses that an optical display panel is continuously manufactured using a roll-to-panel method, and an optical display panel determined to be defective is subjected to heavy processing. In the case where defective products do not occur so often, it is conceivable to use a sheet-to-panel method when a new optical functional film is bonded to the optical unit in the heavy processing. For another example, when it is necessary to mass-produce optical display panels with the same structure in a short time, it is also conceivable that the sheet-to-panel method will be used together when the roll-to-panel method cannot supply the entire supply.
近年來，隨著光學顯示面板薄型化的發展，以偏光薄膜為首，持續開發較以往更薄的光學機能薄膜(例如厚度60μm以下的偏光薄膜)。此類薄型光學機能薄膜，韌性(彈性模數)低弱並容易產生歪曲、翹曲等。In recent years, with the development of thinning of optical display panels, the development of thinner optical functional films (for example, polarizing films having a thickness of 60 μm or less) has been continuously developed, including polarizing films. Such thin optical functional films have low toughness (elastic modulus) and are prone to distortion and warpage.
若依據卷對面板方式，則是在積層於承載薄膜(離型薄膜)的狀態下將薄型光學機能薄膜輸送至貼合位置為止，並於該貼合位置將光學機能薄膜從承載薄膜(離型薄膜)剝離，再將光學機能薄膜貼合於光學單元，因此能夠一邊抑制歪曲、翹曲等的發生，一邊將薄型光學機能薄膜連續貼合於光學單元。然而，在片材對面板方式中，單片狀態之光學機能薄膜的輸送、離型薄膜的剝離、光學機能薄膜對液晶單元的貼合處理等方面的操作不易，有發生貼合不良而良率低落之虞。According to the roll-to-panel method, the thin optical functional film is transported to a laminating position in a state of being laminated on a carrier film (release film), and the optical functional film is removed from the carrier film (releasing type) at the laminating position. The film is peeled off, and then the optical functional film is bonded to the optical unit. Therefore, the thin optical functional film can be continuously bonded to the optical unit while suppressing the occurrence of distortion, warping, and the like. However, in the sheet-to-panel method, it is not easy to handle the transportation of the optically functional film in a single sheet state, the release of the release film, and the bonding process of the optically functional film to the liquid crystal cell. Worry of depression.
本發明之目的在於提供一種單片狀光學薄膜，其在將薄型光學機能薄膜貼合於光學單元時，即便併用卷對面板方式及片材對面板方式仍能適恰地製造相同結構的光學顯示面板。An object of the present invention is to provide a single-sheet optical film, which can appropriately manufacture an optical display with the same structure even when a thin optical functional film is bonded to an optical unit, even when the roll-to-panel method and the sheet-to-panel method are used together. panel.
用以解決課題之手段 本發明為一種單片狀光學薄膜，其依序積層有離型薄膜、黏著劑層、光學機能薄膜、第1表面保護薄膜及第2表面保護薄膜， 關於單片狀光學薄膜中各層間剝離力的大小關係， 當設為離型薄膜與黏著劑層之層間剝離力A、 黏著劑層與光學機能薄膜之層間剝離力B、 光學機能薄膜與第1表面保護薄膜之層間剝離力C、 第1表面保護薄膜與第2表面保護薄膜之層間剝離力D時， 為A＜B、A＜C、A＜D。Means for Solving the Problem The present invention is a monolithic optical film, which is sequentially laminated with a release film, an adhesive layer, an optical function film, a first surface protection film, and a second surface protection film. The relationship between the peeling force of each layer in the film is set as the peeling force A between the release film and the adhesive layer, the peeling force B between the adhesive layer and the optical function film, and the interlayer between the optical function film and the first surface protection film. When the peeling force C and the interlayer peeling force D between the first surface protective film and the second surface protective film are A <B, A <C, A <D.
上述發明中，前述剝離力之大小關係以A＜D＜C≦B或A＜D＜B≦C為佳，且A＜D＜C＜B較佳。In the above invention, the magnitude relationship of the aforementioned peeling force is preferably A <D <C ≦ B or A <D <B ≦ C, and A <D <C <B is more preferable.
上述發明中，前述光學機能薄膜可為偏光薄膜。In the above invention, the optical function film may be a polarizing film.
上述發明中，前述偏光薄膜之厚度可為60μm以下。In the above invention, the thickness of the polarizing film may be 60 μm or less.
上述發明中，前述偏光薄膜可為具有厚度10μm以下之偏光件的結構。In the above invention, the polarizing film may have a structure having a polarizer having a thickness of 10 μm or less.
上述發明中，前述第1表面保護薄膜可為具有第1基材薄膜及第1黏著劑層並透過該第1黏著劑層積層於前述光學機能薄膜的結構。In the above invention, the first surface protection film may have a structure including a first base film and a first adhesive layer, and being laminated on the optical function film through the first adhesive layer.
上述發明中，前述第1表面保護薄膜可為自黏型薄膜。In the above invention, the first surface protection film may be a self-adhesive film.
上述發明中，前述第2表面保護薄膜可為具有第2基材薄膜及第2黏著劑層並透過該第2黏著劑層積層於前述第1表面保護薄膜的結構。In the above invention, the second surface protective film may have a structure including a second base film and a second adhesive layer, and being laminated on the first surface protective film through the second adhesive layer.
上述發明中，前述第2表面保護薄膜可為自黏型薄膜。In the above invention, the second surface protection film may be a self-adhesive film.
發明效果 本發明之單片狀光學薄膜係以片材對面板方式使用。設有第2表面保護薄膜的單片狀光學薄膜由於操作性提升，故可抑制歪曲、翹曲等的發生並同時可適於使用片材對面板方式將其貼合至光學單元。而且，藉由從已貼合於光學顯示面板之單片狀光學薄膜將第2表面保護薄膜去除(例如剝離)，結果可製造出與卷對面板方式製成之光學顯示面板有相同積層結構的光學顯示面板。即，依據本發明之單片狀光學薄膜，在將光學薄膜貼合於光學單元時，即便在併用卷對面板方式及片材對面板方式的情況下，仍能適恰地製造相同結構的光學顯示面板。Effects of the Invention The single-plate optical film of the present invention is used in a sheet-to-panel manner. The single-sheet optical film provided with the second surface protection film has improved operability, and can suppress distortion, warping, and the like, and can be suitably bonded to an optical unit using a sheet-to-panel method. In addition, by removing (for example, peeling off) the second surface protection film from the single-sheet optical film attached to the optical display panel, it is possible to manufacture an optical display panel having the same laminated structure as the roll-to-panel optical display panel. Optical display panel. That is, according to the single-sheet optical film of the present invention, when the optical film is bonded to the optical unit, even when the roll-to-panel method and the sheet-to-panel method are used together, it is possible to appropriately manufacture optically having the same structure. Display panel.
＜單片狀光學薄膜＞ 首先，就本發明所使用之單片狀光學薄膜與卷狀光學薄膜的組合予以說明。圖1為表示單片狀光學薄膜與卷狀光學薄膜的示意圖。圖1上部顯示卷狀第1光學薄膜1之側面、平面及部份之剖面放大圖。圖1下部顯示單片狀第1光學薄膜2之側面、平面及部份之剖面放大圖。卷狀第1光學薄膜1係依序積層有第1離型薄膜11、第1黏著劑層12、第1光學機能薄膜13及第1表面保護薄膜14。<Single-sheet optical film> First, a combination of a single-sheet optical film and a roll-shaped optical film used in the present invention will be described. FIG. 1 is a schematic diagram showing a single-plate optical film and a roll-shaped optical film. The upper side of FIG. 1 shows an enlarged cross-sectional view of a side surface, a plane, and a portion of the rolled first optical film 1. The lower part of FIG. 1 is an enlarged cross-sectional view of a side surface, a plane, and a part of the first sheet of the first optical film 2. The roll-shaped first optical film 1 is sequentially laminated with a first release film 11, a first adhesive layer 12, a first optical function film 13, and a first surface protection film 14.
卷狀第1光學薄膜1係用於以卷對面板方式製造光學顯示面板。在此種情形時，已從卷狀第1光學薄膜1輸出的寬度a之帶狀第1光學薄膜10，係藉切斷手段C以預定間隔b在保留離型薄膜11下被切斷。符號s為第1光學薄膜10因上述切斷而形成的切縫。The roll-shaped first optical film 1 is used for manufacturing an optical display panel by a roll-to-panel method. In this case, the strip-shaped first optical film 10 having a width a which has been output from the roll-shaped first optical film 1 is cut by the cutting means C at a predetermined interval b while retaining the release film 11. The symbol s is a slit formed in the first optical film 10 by the above cutting.
又，單片狀第1光學薄膜2係依序積層有第1離型薄膜21、第1黏著劑層22、第1光學機能薄膜23、第1表面保護薄膜24及第2表面保護薄膜25。單片狀第1光學薄膜2的尺寸係縱a、橫b。單片狀第1光學薄膜2係用於以片材對面板方式製造光學顯示面板。In addition, the single-piece first optical film 2 includes a first release film 21, a first adhesive layer 22, a first optical function film 23, a first surface protection film 24, and a second surface protection film 25, which are sequentially laminated. The dimensions of the single-plate-shaped first optical film 2 are vertical a and horizontal b. The monolithic first optical film 2 is used for manufacturing an optical display panel by a sheet-to-panel method.
本實施形態中，第1離型薄膜11與第1離型薄膜21為相同結構。第1黏著劑層12與第1黏著劑層22為相同結構。第1光學機能薄膜13與第1光學機能薄膜23為相同結構。第1表面保護薄膜14、第1表面保護薄膜24與第2表面保護薄膜25為相同結構。所謂「相同結構」，只要為實質相同(例如製造品質上相同)即可，並非只能材料、厚度等完全一致。In this embodiment, the first release film 11 and the first release film 21 have the same structure. The first adhesive layer 12 has the same structure as the first adhesive layer 22. The first optical functional film 13 has the same structure as the first optical functional film 23. The first surface protection film 14 and the first surface protection film 24 have the same structure as the second surface protection film 25. The so-called "same structure" may be substantially the same (for example, the manufacturing quality is the same), and it is not necessarily the same that the materials and thicknesses are completely the same.
本實施形態中，第1表面保護薄膜14(或24)係具有第1基材薄膜及第1黏著劑層，並透過該第1黏著劑層積層於第1光學機能薄膜13(或23)。此外，於另一實施形態，第1表面保護薄膜14(或24)亦可為自黏型的薄膜。In this embodiment, the first surface protection film 14 (or 24) has a first base film and a first adhesive layer, and is laminated on the first optical function film 13 (or 23) through the first adhesive layer. In addition, in another embodiment, the first surface protection film 14 (or 24) may be a self-adhesive film.
本實施形態中，第2表面保護薄膜25係具有第2基材薄膜及第2黏著劑層，並透過該第2黏著劑層積層於第1表面保護薄膜24。此外，於另一實施形態，第2表面保護薄膜25亦可為自黏型的薄膜。In this embodiment, the second surface protection film 25 includes a second base film and a second adhesive layer, and is laminated on the first surface protection film 24 through the second adhesive layer. In addition, in another embodiment, the second surface protection film 25 may be a self-adhesive film.
(層間剝離力的關係) 又，在結構上，第1表面保護薄膜24與第1光學機能薄膜23之層間剝離力大於第2表面保護薄膜25與第1表面保護薄膜24之層間剝離力。藉此，可較為滑順地將第2表面保護薄膜25剝離。剝離力的測定可使用例如拉伸試驗機。剝離條件方面係以0.3m/分180°剝離進行測定。剝離力係利用黏著劑之組成或厚度等來控制。(Relationship between Interlayer Peeling Forces) In terms of structure, the interlayer peeling force of the first surface protective film 24 and the first optical function film 23 is larger than the interlayer peeling force of the second surface protective film 25 and the first surface protective film 24. Thereby, the 2nd surface protection film 25 can be peeled relatively smoothly. The peeling force can be measured using a tensile tester, for example. In terms of peeling conditions, 0.3 m / min 180 ° peeling was used for measurement. The peeling force is controlled by the composition or thickness of the adhesive.
單片狀第1光學薄膜2中各層間剝離力的大小關係如下所述。 設為第1離型薄膜21與第1黏著劑層22之層間剝離力A、 第1黏著劑層22與第1光學機能薄膜23之層間剝離力B、 第1光學機能薄膜23與第1表面保護薄膜24之層間剝離力C、 第1表面保護薄膜24與第2表面保護薄膜25之層間剝離力D時， 為A＜B、A＜C、A＜D。 並以A＜D＜C≦B、或A＜D＜B≦C為佳。 較佳為A＜D＜C＜B。 依據上述層間剝離力的關係，在第1離型薄膜被剝離時，可抑制第2表面保護薄膜剝開。The magnitude relationship of the peeling force between the layers in the single-plate first optical film 2 is as follows. The interlayer peeling force A between the first release film 21 and the first adhesive layer 22, the interlayer peel force B between the first adhesive layer 22 and the first optical function film 23, the first optical function film 23, and the first surface When the interlayer peeling force C of the protective film 24 and the interlayer peeling force D of the first surface protective film 24 and the second surface protective film 25 are A <B, A <C, A <D. Preferably, A <D <C ≦ B, or A <D <B ≦ C. Preferably, A <D <C <B. Based on the relationship between the interlayer peeling forces, when the first release film is peeled off, peeling of the second surface protection film can be suppressed.
＜光學機能薄膜＞ 第1光學機能薄膜13、23只要是具有光學機能的薄膜即無特別限制，可舉如偏光薄膜、相位差薄膜、增亮薄膜、擴散薄膜等，具代表性者為偏光薄膜。<Optical functional film> The first optical functional films 13, 23 are not particularly limited as long as they are optical films, and examples thereof include polarizing films, retardation films, brightness enhancement films, and diffusion films. Typical examples are polarizing films. .
(偏光薄膜) 就本實施形態而言，從薄型化的觀點來看是使用厚度(總厚度)60μm以下的偏光薄膜為佳，而55μm以下較佳、50μm以下更佳。偏光薄膜可舉例如：(1)偏光件兩側積層有保護薄膜(亦稱「偏光件保護薄膜」)的結構(亦稱「雙面保護偏光薄膜」)；(2)僅於偏光件單側積層有保護薄膜的結構(亦稱「單面保護偏光薄膜」)等。(Polarizing Film) In this embodiment, it is preferable to use a polarizing film having a thickness (total thickness) of 60 μm or less, more preferably 55 μm or less, and 50 μm or less from the viewpoint of thinning. Examples of the polarizing film include: (1) a structure in which protective films (also referred to as "polarizer protective films") are laminated on both sides of the polarizer (also known as "double-sided protective polarizer films"); (2) only on one side of the polarizer The laminated structure has a protective film (also known as a "single-sided protective polarizing film").
(偏光件) 偏光件係採用使用了聚乙烯醇系樹脂之物。作為偏光件，可舉如使聚乙烯醇系薄膜、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吸附碘或二色性染料等二色性材料並加以單軸延伸者，以及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薄膜等。其等當中，又以由聚乙烯醇系薄膜與碘等二色性物質所構成之偏光件為宜。(Polarizer) The polarizer is made of a polyvinyl alcohol resin. Examples of polarizers include adsorption of iodine or dichroic dyes on hydrophilic polymer films such as polyvinyl alcohol-based films, partially formalized polyvinyl alcohol-based films, and ethylene-vinyl acetate copolymer-based saponified films. Polychromatic materials with uniaxial elongation, and polyolefin-based alignment films such as dehydrated products of polyvinyl alcohol or dehydrochlorinated products of polyvinyl chloride. Among these, a polarizer made of a polyvinyl alcohol film and a dichroic material such as iodine is preferable.
將聚乙烯醇系薄膜以碘染色再單軸延伸而成之偏光件舉例來說可以下述方式製作：將聚乙烯醇薄膜浸漬到碘之水溶液藉此染色，再延伸到原長之3~7倍。亦可因應需求將其浸漬於硼酸或可含硫酸鋅或氯化鋅等的碘化鉀等水溶液中。進一步亦可視需要在染色前將聚乙烯醇系薄膜浸漬於水中進行水洗。藉由水洗聚乙烯醇系薄膜，可洗淨聚乙烯醇系薄膜表面的污垢及抗結塊劑，除此以外會使聚乙烯醇系薄膜膨潤從而亦有防止染色參差等不均的效果。延伸可於以碘染色後進行，亦可一邊染色一邊延伸，復亦可於延伸後以碘染色。亦可於硼酸或碘化鉀等水溶液或水浴中進行延伸。For example, a polarizer made of a polyvinyl alcohol-based film dyed with iodine and then uniaxially stretched can be produced by, for example, immersing a polyvinyl alcohol film in an aqueous solution of iodine for dyeing, and then extending to 3 to 7 Times. It can also be immersed in an aqueous solution, such as boric acid or potassium iodide, which can contain zinc sulfate or zinc chloride, as needed. Further, if necessary, the polyvinyl alcohol-based film is immersed in water and washed with water before dyeing. By washing the polyvinyl alcohol-based film with water, dirt and anticaking agents on the surface of the polyvinyl alcohol-based film can be cleaned. In addition, the polyvinyl alcohol-based film can swell and prevent uneven dyeing and other effects. Stretching can be performed after dyeing with iodine, or it can be stretched while dyeing, or it can be dyed with iodine after stretching. It can also be extended in an aqueous solution such as boric acid or potassium iodide or in a water bath.
偏光件之厚度由薄型化之觀點來看係宜為10μm以下，又宜為8μm以下，又宜為7μm以下，又宜為6μm以下。另一方面，偏光件的厚度宜為2μm以上，更宜為3μm以上。這樣的薄型偏光件，厚度參差少、可見度(visibility)優良且尺寸變化又低，故對熱衝撃的耐久性優良。另一方面，含厚度10μm以下之偏光件的偏光薄膜，由於薄膜韌性(彈性模數)顯著變低，故在片材對面板方式中發生歪曲、翹曲等的可能性高。因此，本發明中該偏光薄膜尤為適宜。From the viewpoint of thinning, the thickness of the polarizer is preferably 10 μm or less, 8 μm or less, 7 μm or less, and 6 μm or less. On the other hand, the thickness of the polarizer is preferably 2 μm or more, and more preferably 3 μm or more. Such a thin polarizer has a small thickness variation, excellent visibility, and low dimensional change, so it has excellent durability against thermal shock. On the other hand, in a polarizing film containing a polarizer having a thickness of 10 μm or less, since the film toughness (elastic modulus) is significantly lowered, there is a high possibility of distortion or warpage in the sheet-to-panel method. Therefore, the polarizing film is particularly suitable in the present invention.
作為薄型偏光件，具代表性者可舉如 日本特許第4751486號說明書、 日本特許第4751481號說明書、 日本特許第4815544號說明書、 日本特許第5048120號說明書、 國際公開第2014/077599號說明書 國際公開第2014/077636號說明書 等說明書所記載的薄型偏光件，或由其等所記載之製造方法獲得的薄型偏光件。Representative examples of thin polarizers include Japanese Patent No. 4751486, Japanese Patent No. 4751481, Japanese Patent No. 4815544, Japanese Patent No. 5048120, and International Publication No. 2014/077599. The thin polarizer described in the manual No. 2014/077636 and the like, or the thin polarizer obtained by the manufacturing method described in them.
前述偏光件宜構造成其以單體穿透率T及偏光度P表示之光學特性滿足下式之條件： P＞-(100.929 T-42.4 -1)×100(惟T＜42.3)，或 P≧99.9(惟T≧42.3)。 經構造成滿足前述條件的偏光件，會毫無疑問地具有在使用了大型顯示元件之液晶電視用顯示器方面所需要的性能。具體上為對比度1000：1以上且最大輝度500cd/m2以上。在其他用途方面，則例如可貼合於有機EL單元之視辨側。The aforementioned polarizer should preferably be configured such that the optical characteristics represented by the single transmittance T and the degree of polarization P satisfy the following formula: P ＞-(10 0.929 T -42.4 -1) × 100 (but T <42.3), or P ≧ 99.9 (but T ≧ 42.3). A polarizer configured to satisfy the aforementioned conditions will undoubtedly have the performance required for a liquid crystal television display using a large display element. Specifically, the contrast is 1000: 1 or more and the maximum luminance is 500cd / m2 or more. In other applications, for example, it can be attached to the viewing side of the organic EL unit.
作為前述薄型偏光件，在包含以積層體狀態進行延伸之步驟與染色步驟的製法中，就可高倍率延伸並可提升偏光性能此點而言，宜為如日本特許第4751486號說明書、日本特許第4751481號說明書、日本特許第4815544號說明書所記載般包含於硼酸水溶液中進行延伸之步驟的製法所得者，尤其宜為經由日本特許第4751481號說明書、日本專利4815544號說明書所記載之包含於硼酸水溶液中延伸前進行輔助性空中延伸步驟的製法所獲得者。該等薄型偏光件藉由含有下述步驟之製法製得：將聚乙烯醇系樹脂(以下亦稱PVA系樹脂)層及延伸用樹脂基材以積層體之狀態予以延伸的步驟及進行染色的步驟。若為此種製法，即使PVA系樹脂層很薄，仍可以延伸用樹脂基材支撐，藉此可在免於發生延伸所致斷裂等不良情況下進行延伸。As the aforementioned thin polarizer, in a manufacturing method including a step of stretching in a laminated body state and a dyeing step, in terms of being capable of being stretched at a high magnification and improving polarization performance, it is preferably, for example, Japanese Patent No. 4751486, Japanese Patent In particular, those obtained by a production method including an extension step in an aqueous boric acid solution as described in the specification No. 4751481 and Japanese Patent No. 4815544 are particularly suitable for inclusion in boric acid described in the specification No. 4751481 and Japanese Patent No. 4815544 Obtained by a method for performing an auxiliary aerial stretching step before stretching in an aqueous solution. These thin polarizers are produced by a manufacturing method including the following steps: a step of stretching a polyvinyl alcohol-based resin (hereinafter also referred to as a PVA-based resin) layer and a resin substrate for stretching in the state of a laminate and dyeing step. According to this manufacturing method, even if the PVA-based resin layer is thin, it can be stretched to be supported by a resin base material, thereby being able to be stretched without causing problems such as breakage caused by stretching.
(保護薄膜(偏光件保護薄膜)) 構成保護薄膜的材料，宜為透明性、機械的強度、熱安定性、水分阻斷性、等向性等方面優異者。可舉例如聚對苯二甲酸乙二酯及聚萘二甲酸乙二酯等聚酯系聚合物；二醋酸纖維素及三醋酸纖維素等纖維素系聚合物；聚甲基丙烯酸甲酯等丙烯酸系聚合物；聚苯乙烯及丙烯腈-苯乙烯共聚物(AS樹脂)等苯乙烯系聚合物；以及聚碳酸酯系聚合物等。又，亦可舉如下述聚合物作為形成上述保護薄膜之聚合物之例：聚乙烯、聚丙烯、具有環狀系乃至降莰烯結構之聚烯烴、如乙烯-丙烯共聚物之聚烯烴系聚合物、氯化乙烯系聚合物、尼龍及芳香族聚醯胺等醯胺系聚合物、醯亞胺系聚合物、碸系聚合物、聚醚碸系聚合物、聚醚醚酮系聚合物、聚伸苯硫系聚合物、乙烯醇系聚合物、氯化亞乙烯系聚合物、乙烯縮丁醛系聚合物、芳酯系聚合物、聚甲醛系聚合物、環氧系聚合物或上述聚合物之摻合物等。(Protective film (polarizer protective film)) The material constituting the protective film is preferably one having excellent transparency, mechanical strength, thermal stability, moisture blocking property, and isotropic property. Examples include polyester polymers such as polyethylene terephthalate and polyethylene naphthalate; cellulose polymers such as cellulose diacetate and cellulose triacetate; acrylic acid such as polymethyl methacrylate Polymers; styrene polymers such as polystyrene and acrylonitrile-styrene copolymer (AS resin); and polycarbonate polymers. In addition, the following polymers can be cited as examples of the polymer forming the protective film: polyethylene, polypropylene, polyolefins having a cyclic or even norbornene structure, and polyolefin-based polymerization such as an ethylene-propylene copolymer Polymers, vinyl chloride-based polymers, nylon-based polymers such as nylon and aromatic polyamines, fluorene-based polymers, fluorene-based polymers, polyether fluorene-based polymers, polyetheretherketone-based polymers, Polyphenylene sulfide-based polymer, vinyl alcohol-based polymer, vinylidene chloride-based polymer, ethylene butyral-based polymer, aryl ester-based polymer, polyoxymethylene-based polymer, epoxy-based polymer, or the above-mentioned polymerization Blends of substances.
此外，保護薄膜中亦可含有1種類以上的任意適當添加劑。添加劑可舉例如紫外線吸收劑、抗氧化劑、潤滑劑、塑化劑、離型劑、著色防止劑、難燃劑、核劑、抗靜電劑、顔料、著色劑等。保護薄膜中之上述熱可塑性樹脂含量係宜為50~100重量%，較佳為50~99重量%，更佳為60~98重量%，尤佳為70~97重量%。透明保護薄膜中，上述熱可塑性樹脂含量在50重量%以下時，熱可塑性樹脂恐有無法充分展現其原本具有的高透明性等之虞。In addition, the protective film may contain one or more of any appropriate additives. Examples of the additives include ultraviolet absorbers, antioxidants, lubricants, plasticizers, release agents, coloring inhibitors, flame retardants, nuclear agents, antistatic agents, pigments, and colorants. The content of the thermoplastic resin in the protective film is preferably 50 to 100% by weight, preferably 50 to 99% by weight, more preferably 60 to 98% by weight, and even more preferably 70 to 97% by weight. When the content of the thermoplastic resin in the transparent protective film is 50% by weight or less, there is a possibility that the thermoplastic resin cannot sufficiently exhibit the originally high transparency and the like.
前述保護薄膜亦可使用相位差薄膜、增亮薄膜、擴散薄膜等。The protective film may be a retardation film, a brightness enhancement film, a diffusion film, or the like.
前述保護薄膜之不與偏光件接著之面，可設置硬塗層、抗反射層、防黏層、擴散層及抗眩層等機能層。此外，上述硬塗層、抗反射層、抗黏層、擴散層及抗眩層等機能層除了可設在透明保護薄膜本身以外，亦可與透明保護薄膜分設而另為其他個體。The protective film may be provided with a functional layer such as a hard coating layer, an anti-reflection layer, an anti-adhesion layer, a diffusion layer, and an anti-glare layer on the side of the protective film not adjoining the polarizer. In addition, the functional layers such as the hard coat layer, the anti-reflection layer, the anti-adhesion layer, the diffusion layer, and the anti-glare layer may be provided in addition to the transparent protective film itself, or may be separated from the transparent protective film and formed as other individuals.
(中介層) 前述保護薄膜與偏光件係經由接著劑層、黏著劑層、下塗層(底漆層)等中介層來積層。此時，理想的是利用中介層使兩者毫無空氣間隙地積層。 接著劑層係由接著劑所形成。接著劑的種類並無特別限制，可使用各式各樣的種類。前述接著劑層只要是光學上為透明即可，並無特別限制，可使用水系、溶劑系、熱熔膠系、活性能量線硬化型等各種形態之物作為接著劑，惟理想的是水系接著劑或活性能量線硬化型接著劑。 就水系接著劑而言，可例示如異氰酸酯系接著劑、聚乙烯醇系接著劑、明膠系接著劑、乙烯基系乳膠系、水系聚酯等。水系接著劑通常係以水溶液所構成之接著劑的形式使用，通常含有0.5~60重量%之固體成分。 活性能量線硬化型接著劑，是以電子束、紫外線(自由基硬化型、陽離子硬化型)等活性能量線來進行硬化的接著劑，可使用例如電子束硬化型、紫外線硬化型的態樣。活性能量線硬化型接著劑可使用例如光自由基硬化型接著劑。在將光自由基硬化型的活性能量線硬化型接著劑作為紫外線硬化型來使用時，該接著劑含有自由基聚合性化合物及光聚合引發劑。(Intermediary layer) The protective film and the polarizer are laminated via an intermediary layer such as an adhesive layer, an adhesive layer, and an undercoat layer (primer layer). At this time, it is desirable to use an interposer to laminate the two without an air gap. The adhesive layer is formed of an adhesive. The type of the adhesive is not particularly limited, and various types can be used. The above-mentioned adhesive layer is not particularly limited as long as it is optically transparent, and various forms such as water-based, solvent-based, hot-melt adhesive, and active energy ray-curable types can be used as the adhesive, but the water-based adhesive is ideal. Agent or active energy ray hardening type adhesive. Examples of the water-based adhesive include isocyanate-based adhesives, polyvinyl alcohol-based adhesives, gelatin-based adhesives, vinyl-based latex-based adhesives, and water-based polyesters. The water-based adhesive is usually used as an adhesive composed of an aqueous solution, and usually contains 0.5 to 60% by weight of a solid content. The active energy ray-curable adhesive is an adhesive that cures with active energy rays such as an electron beam and ultraviolet (radical-curable, cation-curable). For example, an electron beam-curable and ultraviolet-curable adhesive can be used. As the active energy ray-curable adhesive, for example, a photoradical-curable adhesive can be used. When a photoradical-curable active energy ray-curable adhesive is used as an ultraviolet-curable, the adhesive contains a radical polymerizable compound and a photopolymerization initiator.
此外，在積層偏光件與保護薄膜時，可在透明保護薄膜與接著劑層之間設置易接著層。易接著層可利用具有例如下述骨架的各種樹脂來形成：聚酯骨架、聚醚骨架、聚碳酸酯骨架、聚胺甲酸酯骨架、聚矽氧系、聚醯胺骨架、聚醯亞胺骨架、聚乙烯醇骨架等。該等聚合物樹脂可單獨使用1種，或組合2種以上來使用。又，在易接著層的形成方面亦可加入其他添加劑。具體而言，可進一步使用黏著賦予劑、紫外線吸收劑、抗氧化劑、耐熱安定劑等安定劑等等。In addition, when the polarizer and the protective film are laminated, an easy-adhesion layer may be provided between the transparent protective film and the adhesive layer. The easy-adhesion layer can be formed by using various resins having, for example, a polyester skeleton, a polyether skeleton, a polycarbonate skeleton, a polyurethane skeleton, a polysiloxane, a polyamide skeleton, and a polyimide. Skeleton, polyvinyl alcohol skeleton, etc. These polymer resins can be used singly or in combination of two or more kinds. In addition, other additives may be added in the formation of the easy-adhesion layer. Specifically, stabilizers such as an adhesion-imparting agent, an ultraviolet absorber, an antioxidant, and a heat-resistant stabilizer can be further used.
黏著劑層係由黏著劑形成。黏著劑方面可使用各種黏著劑，可舉例如橡膠系黏著劑、丙烯酸系黏著劑、矽氧烷系黏著劑、胺甲酸酯系黏著劑、乙烯基烷基醚系黏著劑、聚乙烯基吡咯啶酮系黏著劑、聚丙烯醯胺系黏著劑、纖維素系黏著劑等。可因應前述黏著劑的種類來選擇黏著性基底聚合物。前述黏著劑中，就光學透明性優異、展現適當的濕潤性、凝聚性及接著性等黏著特性並且耐候性及耐熱性等優異此點來看，以使用丙烯酸系黏著劑為佳。The adhesive layer is formed of an adhesive. For the adhesive, various adhesives can be used, and examples thereof include rubber-based adhesives, acrylic-based adhesives, siloxane-based adhesives, urethane-based adhesives, vinyl alkyl ether-based adhesives, and polyvinylpyrrole. Pyridone-based adhesives, polypropylene amidamine-based adhesives, cellulose-based adhesives, and the like. The adhesive base polymer can be selected according to the type of the aforementioned adhesive. Among the above-mentioned adhesives, an acrylic adhesive is preferably used because it has excellent optical transparency, exhibits adhesive properties such as appropriate wettability, cohesiveness, and adhesiveness, and is excellent in weather resistance and heat resistance.
底塗層(底漆層)是為了使偏光件與保護薄膜的密著性提升而形成。構成底漆層的材料，只要是對基材薄膜與聚乙烯醇系樹脂層兩者發揮一定程度的強密著力的材料即可，並無特別限定。例如，可使用透明性、熱穩定性、延伸性等優良的熱可塑性樹脂等等。作為熱可塑性樹脂，可舉例如丙烯酸系樹脂、聚烯烴系樹脂、聚酯系樹脂、聚乙烯醇系樹脂、或其等之混合物。The undercoat layer (primer layer) is formed to improve the adhesion between the polarizer and the protective film. The material constituting the primer layer is not particularly limited as long as it exhibits a certain degree of strong adhesion to both the base film and the polyvinyl alcohol-based resin layer. For example, a thermoplastic resin excellent in transparency, thermal stability, elongation, and the like can be used. Examples of the thermoplastic resin include acrylic resins, polyolefin resins, polyester resins, polyvinyl alcohol resins, and mixtures thereof.
(表面保護薄膜) 第1、第2表面保護薄膜於光學薄膜中係設於偏光薄膜之單面(未積層黏著劑層之面)，用以保護偏光薄膜等光學機能薄膜。 作為第1、第2表面保護薄膜的基材薄膜，從檢査性及管理性等觀點來看，係選擇具有等向性或近似等向性的薄膜材料。該薄膜材料可舉例如聚對苯二甲酸乙二酯薄膜等聚酯系樹脂、纖維素系樹脂、乙酸酯系樹脂、聚醚碸系樹脂、聚碳酸酯系樹脂、聚醯胺系樹脂、聚醯亞胺系樹脂、聚烯烴系樹脂、丙烯酸系樹脂般透明的聚合物。其等當中又以聚酯系樹脂為宜。基材薄膜亦可使用1種或2種以上之薄膜材料的層合體，復亦可使用前述薄膜的延伸物。基材薄膜薄膜的厚度宜為10μm~150μm以下，更宜為20~100μm。(Surface protection film) The first and second surface protection films are provided on one side of the polarizing film (the surface on which the adhesive layer is not laminated) in the optical film to protect optical functional films such as the polarizing film. As the base film of the first and second surface protection films, from the viewpoints of inspection and management, etc., a film material having an isotropic or nearly isotropic property is selected. Examples of the film material include polyester resins such as polyethylene terephthalate films, cellulose resins, acetate resins, polyether fluorene resins, polycarbonate resins, polyamide resins, Polyimide-based resin, polyolefin-based resin, and acrylic-based transparent polymer. Among them, polyester resins are preferred. The base film may be a laminate of one or more film materials, and an extension of the film may also be used. The thickness of the base film is preferably 10 μm to 150 μm, and more preferably 20 to 100 μm.
第1、第2表面保護薄膜，除了可將前述基材薄膜作成自黏型薄膜來使用外，亦可使用具有前述基材薄膜及黏著劑層者。而從保護偏光薄膜等光學機能薄膜的觀點來看，第1、第2表面保護薄膜係宜使用具有黏著劑層者。In addition to the first and second surface protection films, in addition to using the base film as a self-adhesive film, those having the base film and an adhesive layer can also be used. From the viewpoint of protecting optical functional films such as polarizing films, those having an adhesive layer are preferably used as the first and second surface protective films.
用於積層第1、第2表面保護薄膜的黏著劑層，舉例來說，可適當選擇並使用以(甲基)丙烯酸系聚合物、聚矽氧系聚合物、聚酯、聚胺基甲酸酯、聚醯胺、聚醚、氟系及橡膠系等的聚合物作為基底聚合物的黏著劑。從透明性、耐候性、耐熱性等觀點來看，宜為以丙烯酸系聚合物作為基底聚合物的丙烯酸系黏著劑。黏著劑層的厚度(乾燥膜厚)，係因應所需黏著力來決定。通常為1~100μm左右，並宜為5~50μm。The adhesive layer for laminating the first and second surface protection films can be appropriately selected and used, for example, from a (meth) acrylic polymer, a silicone polymer, a polyester, or a polyurethane. Polymers such as esters, polyamides, polyethers, fluorine-based and rubber-based polymers are used as adhesives for the base polymer. From the viewpoints of transparency, weather resistance, heat resistance, and the like, an acrylic adhesive having an acrylic polymer as a base polymer is preferred. The thickness of the adhesive layer (dry film thickness) is determined by the required adhesive force. It is usually about 1 to 100 μm, and preferably 5 to 50 μm.
此外，第1、第2表面保護薄膜係可於設有黏著劑層之面的相反面，利用聚矽氧處理、長鏈烷基處理、氟處理等低接著性材料來設置剝離處理層。In addition, the first and second surface protection films may be provided on the opposite side of the surface on which the adhesive layer is provided, with a release treatment layer using a low-adhesion material such as polysiloxane treatment, long-chain alkyl treatment, or fluorine treatment.
＜黏著劑層＞ 黏著劑層12、22的形成方面係可使用適當的黏著劑，其種類並無特別限制。作為黏著劑，可舉如橡膠系黏著劑、丙烯酸系黏著劑、聚矽氧系黏著劑、胺基甲酸酯系黏著劑、乙烯基烷基醚系黏著劑、聚乙烯醇系黏著劑、聚乙烯吡咯啶酮系黏著劑、聚丙烯醯胺系黏著劑、纖維素系黏著劑等。<Adhesive layer> An appropriate adhesive can be used for the formation of the adhesive layers 12 and 22, and the type is not specifically limited. Examples of the adhesive include a rubber-based adhesive, an acrylic-based adhesive, a polysiloxane-based adhesive, a urethane-based adhesive, a vinyl alkyl ether-based adhesive, a polyvinyl alcohol-based adhesive, and a polymer. Vinyl pyrrolidone-based adhesives, polypropylene amidamine-based adhesives, cellulose-based adhesives, and the like.
該等黏著劑中，又適宜使用光學透明性佳、展現適當濕潤性、凝集性及接著性之黏著特性且耐候性及耐熱性等優異者。作為展現此等特徵者，宜使用丙烯酸系黏著劑。Among these adhesives, those which are excellent in optical transparency, exhibit proper adhesion properties such as wettability, cohesiveness, and adhesiveness, and are excellent in weather resistance and heat resistance are also suitable. As those exhibiting these characteristics, an acrylic adhesive is preferably used.
形成黏著劑層12、22的方法，舉例來說，可藉由下述方法來製作：將前述黏著劑塗佈於經剝離處理之離型薄膜(分離件等)，乾燥去除聚合溶劑等而形成黏著劑層後，轉印到偏光件(或透明保護薄膜)的方法；或將前述黏著劑塗佈於偏光件(或透明保護薄膜)，乾燥去除聚合溶劑等而於偏光件形成黏著劑層的方法等。此外，在塗佈黏著劑時，亦可適當增添聚合溶劑以外的一種以上溶劑。The method for forming the adhesive layers 12 and 22 can be produced, for example, by applying the aforementioned adhesive to a release film (separator, etc.) subjected to a peeling treatment, and drying and removing the polymerization solvent. A method of transferring the adhesive layer to a polarizer (or a transparent protective film); or applying the aforementioned adhesive to a polarizer (or a transparent protective film), drying and removing a polymerization solvent to form an adhesive layer on the polarizer Method, etc. In addition, when the adhesive is applied, one or more solvents other than the polymerization solvent may be appropriately added.
宜使用聚矽氧剝離襯材作為經剝離處理的離型薄膜。於此種襯材上塗佈本發明之黏著劑並使其乾燥而形成黏著劑層的步驟中，可因應目的而採用適宜且適切的方法來作為使黏著劑乾燥之方法。較佳是使用將上述塗佈膜過熱乾燥的方法。加熱乾燥溫度宜為40℃~200℃，更佳為50℃~180℃，尤佳為70℃~170℃。可藉由將加熱溫度設成上述範圍，而獲得具有優異黏著特性的黏著劑。A silicone release liner should be used as the release film after the release treatment. In the step of applying the adhesive of the present invention to such a lining material and drying it to form an adhesive layer, a suitable and appropriate method may be adopted as a method of drying the adhesive according to the purpose. It is preferable to use a method of drying the coating film by heat. The heating and drying temperature is preferably 40 ° C to 200 ° C, more preferably 50 ° C to 180 ° C, and even more preferably 70 ° C to 170 ° C. By setting the heating temperature to the above range, an adhesive having excellent adhesive properties can be obtained.
乾燥時間可採用適當適切的時間。上述乾燥時間宜為5秒~20分鐘，更佳為5秒~10分鐘，尤佳為10秒~5分鐘。The appropriate drying time can be used as the drying time. The drying time is preferably 5 seconds to 20 minutes, more preferably 5 seconds to 10 minutes, and even more preferably 10 seconds to 5 minutes.
第1黏著劑層12、22之形成方法可使用各種方法。具體上，可舉例如輥塗法、接觸上膠輥塗佈法、凹版塗佈法、反向塗佈法、輥刷法、噴塗法、浸漬輥塗法、棒塗法、刀塗法、氣刀塗佈法、淋幕式塗佈法、唇模塗佈法、利用鑄模塗佈機等之擠壓塗佈法等等方法。Various methods can be used for forming the first adhesive layers 12 and 22. Specifically, for example, a roll coating method, a contact sizing roller coating method, a gravure coating method, a reverse coating method, a roll brush method, a spray coating method, a dip roll coating method, a bar coating method, a knife coating method, a gas coating method, etc. A knife coating method, a curtain coating method, a lip mold coating method, an extrusion coating method using a mold coater, and the like.
第1黏著劑層12、22之厚度並無特別限制，例如在1~100μm左右。並宜為2~50μm，較佳為2~40μm，更佳為5~35μm。The thickness of the first adhesive layers 12 and 22 is not particularly limited, and is, for example, about 1 to 100 μm. It is preferably 2 to 50 μm, preferably 2 to 40 μm, and more preferably 5 to 35 μm.
＜離型薄膜＞ 第1離型薄膜11，21係保護黏著劑層直到供予實際使用為止。離型薄膜之構成材料可舉例如聚乙烯、聚丙烯、聚對苯二甲酸乙二酯及聚酯薄膜等塑膠薄膜、紙、布、不織布等多孔質材料、網狀物、發泡片、金屬箔及其等之積層體等之適當單片體等，但從表面平滑性優異之觀點來看，適宜使用塑膠薄膜。<Release Film> The first release film 11, 21 is a protective adhesive layer until it is actually used. The constituent materials of the release film include, for example, plastic films such as polyethylene, polypropylene, polyethylene terephthalate, and polyester films, porous materials such as paper, cloth, and non-woven cloth, meshes, foamed sheets, and metals. A suitable monolithic body, such as a foil or a laminated body thereof, is preferably a plastic film from the viewpoint of excellent surface smoothness.
作為該塑膠薄膜，只要是得以保護前述黏著劑層的薄膜即無特別限定，可舉例如聚乙烯薄膜、聚丙烯薄膜、聚丁烯薄膜、聚丁二烯薄膜、聚甲基戊烯薄膜、聚氯乙烯薄膜、氯乙烯共聚物薄膜、聚對苯二甲酸乙二酯薄膜、聚對苯二甲酸丁二酯薄膜、聚胺基甲酸酯薄膜、乙烯-乙酸乙烯酯共聚物薄膜等。The plastic film is not particularly limited as long as it is a film capable of protecting the aforementioned adhesive layer, and examples thereof include polyethylene films, polypropylene films, polybutene films, polybutadiene films, polymethylpentene films, and polymer films. Vinyl chloride film, vinyl chloride copolymer film, polyethylene terephthalate film, polybutylene terephthalate film, polyurethane film, ethylene-vinyl acetate copolymer film, and the like.
第1離型薄膜11、21的厚度通常為5~200μm左右，並宜為5~100μm左右。亦可視需要對前述分離件進行利用聚矽氧系、氟系、長鏈烷基系或脂肪酸醯胺系離型劑、氧化矽粉等的離型及防污處理，及塗佈型、捏合型、蒸鍍型等抗靜電處理。特別是，藉由在前述離型薄膜之表面適當施以矽氧處理、長鏈烷基處理、氟處理等剝離處理，可更加提高脫離前述黏著劑層之剝離性。The thickness of the first release films 11 and 21 is usually about 5 to 200 μm, and preferably about 5 to 100 μm. If necessary, release and antifouling treatments using polysiloxane-based, fluorine-based, long-chain alkyl-based or fatty acid ammonium-based release agents, silica powder, etc., as well as coating and kneading types , Anti-static treatment such as evaporation type. In particular, by appropriately applying a peeling treatment such as a siloxane treatment, a long-chain alkyl treatment, or a fluorine treatment to the surface of the release film, the peelability from the adhesive layer can be further improved.
(液晶單元、液晶顯示面板) 液晶單元，係於對向配置之一對基板(第1基板(視辨側面)Pa、第2基板(背面)Pb)間封有液晶層的結構。液晶單元可使用任意類型，惟為能實現高對比，宜使用垂直配向(VA)模式、面內切換(IPS)模式之液晶單元。液晶顯示面板為在液晶單元之單面或兩面貼合有偏光薄膜之物，並視需要安裝驅動電路。(Liquid crystal cell, liquid crystal display panel) The liquid crystal cell has a structure in which a liquid crystal layer is sealed between a pair of substrates (a first substrate (viewing side) Pa and a second substrate (back side) Pb) arranged opposite to each other. Any type of liquid crystal cell can be used, but in order to achieve high contrast, a liquid crystal cell in vertical alignment (VA) mode and in-plane switching (IPS) mode should be used. The liquid crystal display panel is a thing with a polarizing film laminated on one or both sides of the liquid crystal cell, and a driving circuit is installed as needed.
(有機EL單元、有機EL顯示面板) 有機EL單元係於一對電極間夾有電場發光層的結構。有機EL單元可使用例如頂發光型、底發光型、雙發光型等任意類型。有機EL顯示面板為在有機EL單元之單面或兩面貼合有偏光薄膜之物，並視需要安裝驅動電路。(Organic EL Unit, Organic EL Display Panel) The organic EL unit has a structure in which an electric field light-emitting layer is sandwiched between a pair of electrodes. As the organic EL unit, any type such as a top emission type, a bottom emission type, and a dual emission type can be used. The organic EL display panel is a thing in which a polarizing film is laminated on one or both sides of an organic EL unit, and a driving circuit is installed as needed.
(卷對面板方式之製造系統) 圖2顯示使用了卷狀第1光學薄膜1之卷對面板方式的光學顯示面板製造系統。就本實施形態，咸舉液晶單元為光學單元之例、液晶顯示面板為光學顯示面板之例予以說明。(Roll-to-panel manufacturing system) FIG. 2 shows a roll-to-panel manufacturing method of an optical display panel using the roll-shaped first optical film 1. In this embodiment, an example in which a liquid crystal cell is an optical unit and an example in which a liquid crystal display panel is an optical display panel will be described.
卷狀第1光學薄膜1係依序積層有第1離型薄膜11、第1黏著劑層12、第1光學機能薄膜13及第1表面保護薄膜14。如圖1所示，卷狀第1光學薄膜1為寬度a，具有對應於液晶面板之長邊的寬度(較液晶單元P之長邊實質更短的寬度)。The roll-shaped first optical film 1 is sequentially laminated with a first release film 11, a first adhesive layer 12, a first optical function film 13, and a first surface protection film 14. As shown in FIG. 1, the rolled first optical film 1 has a width a and has a width corresponding to the long side of the liquid crystal panel (a width substantially shorter than the long side of the liquid crystal cell P).
本實施形態之液晶顯示面板之製造系統，係如圖2所示具有：第1輸送部81，將液晶單元P往第1貼附部64輸送；以及第2輸送部82，輸送已使用卷狀第1光學薄膜1在液晶單元P之第1面P1貼附光學薄膜後的液晶單元P。各輸送部係經構組而具有多個輸送用輥R，用於藉由以旋轉軸為中心進行旋轉來輸送液晶單元P，其中該旋轉軸係與輸送方向之正交方向平行。而且，除了輸送輥外亦可經構組而具有吸附盤等。As shown in FIG. 2, the manufacturing system of the liquid crystal display panel of this embodiment includes: a first transporting unit 81 that transports the liquid crystal cell P to the first attaching unit 64; and a second transporting unit 82 that transports the used roll shape. The first optical film 1 is a liquid crystal cell P having an optical film attached to a first surface P1 of the liquid crystal cell P. Each conveying unit is configured to have a plurality of conveying rollers R for conveying the liquid crystal cell P by rotating around a rotation axis. The rotation axis is parallel to the orthogonal direction of the conveying direction. Moreover, in addition to a conveyance roller, you may have an adsorption | suction plate etc. by forming a group.
(液晶單元輸送步驟) 從收納液晶單元P的收納部91讓液晶單元P以第1面P1為頂面的方式配置至第1輸送部81，利用輸送輥R的旋轉往第1貼附部64輸送。(Liquid crystal cell transporting step) The liquid crystal cell P is arranged from the storage portion 91 that stores the liquid crystal cell P to the first transporting portion 81 with the first surface P1 as the top surface, and the first attaching portion 64 is rotated by the rotation of the transporting roller R. delivery.
(第1光學薄膜輸出步驟、第1光學薄膜切斷步驟) 從卷狀第1光學薄膜1輸出的帶狀第1光學薄膜10，係一邊將第1離型薄膜11側吸附固定一邊進行切斷而形成切縫部s，所述切斷係於保留第1離型薄膜11不切斷下，以切斷部61將帶狀黏著劑層12、帶狀第1光學機能薄膜13與帶狀第1表面保護薄膜14切成預定尺寸(對應於液晶單元P之短邊的長度(實質上較短邊更短的長度))。利用切斷部61的切斷可舉例如使用了刃物的切斷(利用切割刀具進行的切斷)、利用雷射裝置的切斷。以圖2之箭頭表示切斷後的切縫部s之一例，惟為方便說明故特意將切縫擴大繪製。亦可為有未圖示之夾輥配置在切斷部61之上游側或下游側以輸送帶狀第1光學薄膜10的結構。此外，夾輥可配置在切斷部61的上游側以及下游側。(First optical film output step, first optical film cutting step) The strip-shaped first optical film 10 output from the roll-shaped first optical film 1 is cut while adsorbing and fixing the first release film 11 side. The slit portion s is formed, and the cutting is performed without leaving the first release film 11, and the strip-shaped adhesive layer 12, the strip-shaped first optical function film 13, and the strip-shaped first The surface protection film 14 is cut into a predetermined size (corresponding to the length of the short side of the liquid crystal cell P (the substantially shorter length of the shorter side)). Examples of the cutting by the cutting unit 61 include cutting using a blade (cutting by a cutting blade) and cutting using a laser device. An example of the slit portion s after cutting is shown by an arrow in FIG. 2, but the slit is intentionally enlarged and drawn for convenience of explanation. A configuration may be adopted in which a nip roller (not shown) is arranged on the upstream side or the downstream side of the cutting section 61 to convey the first optical film 10 in the shape of a belt. The nip rollers may be arranged on the upstream side and the downstream side of the cutting portion 61.
(張力調節步驟) 帶狀第1光學薄膜10之切斷處理與後段之貼附處理中，為了能夠歷經長時間在不中斷處理下連續處理、並為了調整薄膜的張力，故設有第1張力調整部62。第1張力調整部62係經構組而具有例如使用了錠子(spindle)的張力輥(dancer)機構。未圖示之夾輥可為配置於第1張力調整部62之上游側或下游側以輸送第1光學薄膜10的結構。此外，夾輥可配置於第1張力調整部62之上游側以及下游側。(Tension adjustment step) In the cutting process of the first optical film 10 and the post-attachment process, the first tension is provided in order to enable continuous processing without interruption over a long period of time and to adjust the tension of the film. Adjusting section 62. The first tension adjustment unit 62 is a warp mechanism and includes, for example, a tension roller mechanism using a spindle. The nip roller (not shown) may be configured to be disposed on the upstream side or the downstream side of the first tension adjustment portion 62 to transport the first optical film 10. The nip rollers may be arranged on the upstream side and the downstream side of the first tension adjustment portion 62.
(剝離步驟) 第1光學薄膜10係於第1剝離部63回繞反轉，讓第1光學薄膜10從第1離型薄膜11剝離。第1離型薄膜11係經由第1捲取部65而被輥筒捲取。第1捲取部65具有輥筒與旋轉驅動部，旋轉驅動部驅使輥筒旋轉，從而使第1離型薄膜11捲繞於輥筒。又，未圖示之夾輥可為配置於剝離部63之上游側或下游側以輸送第1光學薄膜10或第1離型薄膜11的結構。此外，夾輥可配置在剝離部63的上游側以及下游側。(Peeling step) The first optical film 10 is wound and reversed at the first peeling portion 63 to peel the first optical film 10 from the first release film 11. The first release film 11 is taken up by a roller through a first take-up section 65. The first winding section 65 includes a roller and a rotation driving section. The rotation driving section drives the roller to rotate, and the first release film 11 is wound around the roller. A nip roller (not shown) may be configured to be disposed on the upstream side or the downstream side of the peeling section 63 to transport the first optical film 10 or the first release film 11. The nip rollers may be disposed on the upstream side and the downstream side of the peeling portion 63.
(第1貼附步驟) 第1貼附部64，係一邊輸送液晶單元P一邊將已剝離第1離型薄膜11的第1光學薄膜10透過第1黏著劑層12貼附在液晶單元P的第1面P1上。第1貼附部64係由成對的第1輥件64a與第2輥件64b構成。可為其中任一者為驅動輥而另一者為從動輥，亦可兩輥件均為驅動輥。成對的第1輥件64a與第2輥件64b一邊夾住第1光學薄膜10與液晶單元P一邊送往下游，從而使第1光學薄膜10對著液晶單元P之第1面P1進行貼附。液晶單元P之第1面P1已貼付單片狀第1光學薄膜10後的液晶單元P，係以第2輸送部82往下游輸送。(First attaching step) The first attaching portion 64 attaches the first optical film 10 from which the first release film 11 has been peeled through the first adhesive layer 12 to the liquid crystal cell P while conveying the liquid crystal cell P. On the first side P1. The first attachment portion 64 is composed of a pair of a first roller member 64a and a second roller member 64b. Either one may be a driving roller and the other is a driven roller, or both rollers may be driving rollers. The pair of first roller members 64a and second roller members 64b sandwich the first optical film 10 and the liquid crystal cell P while sending them downstream, so that the first optical film 10 is attached to the first surface P1 of the liquid crystal cell P. Attached. The liquid crystal cell P after the first surface P1 of the liquid crystal cell P has been pasted to the single-piece first optical film 10 is transported downstream by the second transport section 82.
(片材對面板方式之製造系統) 圖3顯示使用了單片狀第1光學薄膜2之片材對面板方式的光學顯示面板製造系統。就本實施形態，咸舉液晶單元為光學單元之例、液晶顯示面板為光學顯示面板之例予以說明。(Manufacturing System of Sheet-to-Panel Method) FIG. 3 shows a sheet-to-panel method of manufacturing an optical display panel using a single sheet of the first optical film 2. In this embodiment, an example in which a liquid crystal cell is an optical unit and an example in which a liquid crystal display panel is an optical display panel will be described.
單片狀第1光學薄膜2係依序積層有第1離型薄膜21、第1黏著劑層22、第1光學機能薄膜23、第1表面保護薄膜24及第2表面保護薄膜。如圖1所示，單片狀第1光學薄膜2係縱a及橫b，具有對應於液晶面板之長邊的寬度(較液晶單元P之長邊實質更短的寬度)。The monolithic first optical film 2 is a laminated layer including a first release film 21, a first adhesive layer 22, a first optical function film 23, a first surface protective film 24, and a second surface protective film. As shown in FIG. 1, the monolithic first optical film 2 has a width a and a width b, and has a width corresponding to the long side of the liquid crystal panel (a width substantially shorter than the long side of the liquid crystal cell P).
本實施形態中的液晶顯示面板之製造系統，係如圖3所示般具有：第3輸送部181，將液晶單元P往單片貼合裝置164(相當於第2貼附部)輸送；及第4輸送部182，輸送已使用單片狀第1光學薄膜2將光學薄膜貼附於液晶單元P之第1面P1後的液晶單元P。各輸送部係經構組而具有多個輸送用輥R，用於藉由以旋轉軸為中心進行旋轉來輸送液晶單元P，其中該旋轉軸係與輸送方向之正交方向平行。而且，除了輸送輥外亦可經構組而具有吸附盤等。The manufacturing system for a liquid crystal display panel in this embodiment includes a third transporting unit 181, as shown in FIG. 3, which transports the liquid crystal cell P to the single-chip bonding apparatus 164 (equivalent to the second bonding unit); and The fourth conveyance unit 182 conveys the liquid crystal cell P after the optical film is attached to the first surface P1 of the liquid crystal cell P using the single-piece first optical film 2. Each conveying unit is configured to have a plurality of conveying rollers R for conveying the liquid crystal cell P by rotating around a rotation axis. The rotation axis is parallel to the orthogonal direction of the conveying direction. Moreover, in addition to a conveyance roller, you may have an adsorption | suction plate etc. by forming a group.
(液晶單元輸送步驟) 從收納液晶單元P的收納部191讓液晶單元P以第1面P1為頂面的方式配置至第3輸送部181，利用輸送輥R的旋轉往單片貼合裝置164輸送。(Liquid crystal cell conveying step) The liquid crystal cell P is arranged from the storage portion 191 that stores the liquid crystal cell P to the third conveying portion 181 with the first surface P1 as the top surface, and is rotated to the single-chip laminating device 164 by the rotation of the conveying roller R delivery.
以單片貼合裝置164之吸附部164a，從收容了單片狀第1光學薄膜2的容器100吸附單片狀第1光學薄膜2，並供給至貼合位置。利用剝離手段從單片狀第1光學薄膜2剝離第1離型薄膜21。吸附部164a的吸附面為剖面圓弧狀。剝離手段可為例如藉由使用黏著膠帶、將黏著膠帶貼合在第1離型薄膜21面上並以移動機構移動黏著膠帶，來使第1離型薄膜21剝離。The single-piece first optical film 2 is sucked from the container 100 in which the single-piece first optical film 2 is stored by the suction portion 164 a of the single-piece bonding device 164 and supplied to the bonding position. The first release film 21 is peeled from the monolithic first optical film 2 by a peeling means. The adsorption surface of the adsorption part 164a is arc-shaped in cross section. The peeling means may be, for example, using an adhesive tape, bonding the adhesive tape to the first release film 21 surface, and moving the adhesive tape with a moving mechanism to peel the first release film 21.
單片貼合裝置164具有固定面164b，固定面164b係吸附固定液晶單元P之第1面P1側。在已剝離第1離型薄膜21並露出第1黏著劑層22之狀態下，以使吸附部164a轉動的方式將單片狀第2光學薄膜2貼附於液晶單元P之第1面P1。The single-chip bonding apparatus 164 has a fixing surface 164b, and the fixing surface 164b is a side of the first surface P1 that adsorbs and fixes the liquid crystal cell P. In a state where the first release film 21 has been peeled off and the first adhesive layer 22 is exposed, the single-piece second optical film 2 is attached to the first surface P1 of the liquid crystal cell P so that the adsorption portion 164 a is rotated.
(第2表面保護薄膜剝離步驟) 在貼附單片狀第1光學薄膜2後，將第2表面保護薄膜25剝離。剝離處理可藉手動作業實施，亦可藉剝離裝置實施。(Second Surface Protection Film Peeling Step) After the single-piece first optical film 2 is attached, the second surface protection film 25 is peeled. The peeling process can be performed by a manual operation or by a peeling device.
上述卷對面板方式之製造系統(圖2)中，是對著液晶單元之一面(第1面P1)以卷對面板方式貼附光學薄膜，但不限於此。亦可對著液晶單元之另一面(第2面P2)以卷對面板方式或片材對面板方式貼附光學薄膜。In the roll-to-panel manufacturing system (FIG. 2), the optical film is attached to the one surface (first surface P1) of the liquid crystal cell by the roll-to-panel method, but is not limited thereto. The optical film may also be attached to the other side (the second side P2) of the liquid crystal cell by a roll-to-panel method or a sheet-to-panel method.
上述片材對面板方式之製造系統(圖3)中，是對著液晶單元之一面(第1面P1)以片材對面板方式貼附光學薄膜，但不限於此。亦可對著液晶單元之另一面(第2面P2)以卷對面板方式或片材對面板方式貼附光學薄膜。In the sheet-to-panel manufacturing system (FIG. 3), the optical film is attached to the one-side (first surface P1) of the liquid crystal cell by the sheet-to-panel method, but is not limited thereto. The optical film may also be attached to the other side (the second side P2) of the liquid crystal cell by a roll-to-panel method or a sheet-to-panel method.
上述卷對面板方式及片材對面板方式之製造系統中，可在光學薄膜貼附於任一面或兩面後，進行光學檢査。可因應光學檢査的結果(例如經不良品判定的情況)，從液晶單元(光學單元)去除光學薄膜，於第2面板製造部(片材對面板方式)再次貼附光學單元，再製造液晶顯示面板(光學顯示面板)。In the roll-to-panel and sheet-to-panel manufacturing systems described above, optical inspection can be performed after the optical film is attached to either or both sides. The optical film can be removed from the liquid crystal cell (optical cell) in accordance with the results of the optical inspection (such as the case of defective products), and the optical unit can be reattached in the second panel manufacturing section (sheet-to-panel method) to manufacture a liquid crystal display Panel (optical display panel).
(變化例) 本實施形態是說明關於將卷狀光學薄膜與單片狀光學薄膜之光學薄膜組使用在液晶顯示面板之連續製造方法，但不限於此，亦可使用在有機EL顯示面板之連續製造方法。(Modification) This embodiment is a continuous manufacturing method for using an optical film group of a roll-shaped optical film and a monolithic optical film in a liquid crystal display panel, but it is not limited to this, and it can also be used in a continuous organic EL display panel. Production method.
實施形態中是使用上述光學薄膜作為卷狀光學薄膜，但卷狀光學薄膜的結構並不限於此。例如可使用除離型薄膜外已於寬度方向形成有多個切縫線的帶狀光學薄膜所捲繞而成之物(內含切口之光學薄膜)。In the embodiment, the optical film is used as a roll-shaped optical film, but the structure of the roll-shaped optical film is not limited to this. For example, in addition to a release film, a tape-shaped optical film having a plurality of slit lines formed in the width direction (a optical film including a slit) can be used.
實施形態中係以預定間隔將帶狀光學薄膜於寬度方向切斷(半切)，惟從提升良率的觀點來看，以避開帶狀光學薄膜之缺陷部位的方式將帶狀光學薄膜於寬度方向切斷(跳切，skip cut)亦可，將含缺陷部位的光學薄膜以較預定間隔(光學單元之尺寸)更小的尺寸(較佳為盡可能小的尺寸)切斷亦可。In the embodiment, the strip-shaped optical film is cut (half-cut) in the width direction at a predetermined interval. However, from the viewpoint of improving the yield, the strip-shaped optical film is formed at a width so as to avoid defects in the strip-shaped optical film. Orientation cutting (skip cutting) may be performed, and the optical film including a defect portion may be cut at a smaller size (preferably as small as possible) than a predetermined interval (size of the optical unit).
實施形態是舉扁長方形之液晶單元及液晶顯示面板為例予以說明，但液晶單元及液晶顯示面板的形狀只要是具有一組對邊與另一組對邊的形狀即可，並無特別限定。The embodiment is described by taking a flat rectangular liquid crystal cell and a liquid crystal display panel as examples, but the shape of the liquid crystal cell and the liquid crystal display panel is not particularly limited as long as the shape has one set of opposite sides and another set of opposite sides.
1‧‧‧卷狀光學薄膜
10‧‧‧帶狀光學薄膜
11‧‧‧離形薄膜
12‧‧‧黏著劑層
13‧‧‧光學機能薄膜
14‧‧‧第1表面保護薄膜
2‧‧‧單片狀光學薄膜
21‧‧‧離形薄膜
22‧‧‧黏著劑層
23‧‧‧光學機能薄膜
24‧‧‧第1表面保護薄膜
25‧‧‧第2表面保護薄膜
a‧‧‧寬度、縱
b‧‧‧預定間隔、橫
s‧‧‧切縫部
C‧‧‧切斷手段
61‧‧‧切斷部
62‧‧‧第1張力調整部
63‧‧‧第1剝離部
64‧‧‧第1貼附部
64a‧‧‧第1輥件
64b‧‧‧第2輥件
65‧‧‧第1捲取部
81‧‧‧第1輸送部
82‧‧‧第2輸送部
91‧‧‧收納部
100‧‧‧容器
164‧‧‧單片貼合裝置
164a‧‧‧吸附部
164b‧‧‧固定面
181‧‧‧第3輸送部
182‧‧‧第4輸送部
191‧‧‧收納部
R‧‧‧輸送輥
P1‧‧‧液晶單元P之第1面
P2‧‧‧液晶單元P之第2面
P‧‧‧液晶單元
Y‧‧‧輸送方向1‧‧‧ roll optical film
10‧‧‧ Ribbon Optical Film
11‧‧‧ Release film
12‧‧‧ Adhesive layer
13‧‧‧ Optical Functional Film
14‧‧‧The first surface protection film
2‧‧‧ Monolithic Optical Film
21‧‧‧ Release film
22‧‧‧ Adhesive layer
23‧‧‧ Optical Functional Film
24‧‧‧The first surface protection film
25‧‧‧Second surface protection film
a‧‧‧width, vertical
b‧‧‧ predetermined interval, horizontal
s‧‧‧cutting section
C‧‧‧ cutting means
61‧‧‧cut-off section
62‧‧‧The first tension adjustment section
63‧‧‧The first peeling part
64‧‧‧ The first attaching department
64a‧‧‧1st Roller
64b‧‧‧ 2nd roller
65‧‧‧Volume 1
81‧‧‧The first conveying department
82‧‧‧Second Conveyor
91‧‧‧Storage Department
100‧‧‧ container
164‧‧‧Single piece laminating device
164a‧‧‧Adsorption Department
164b‧‧‧Fixed surface
181‧‧‧The third conveying department
182‧‧‧4th Conveyor
191‧‧‧Storage
R‧‧‧ transport roller
P1‧‧‧The first side of the liquid crystal cell P
P2‧‧‧Second side of liquid crystal cell P
P‧‧‧LCD unit
Y‧‧‧ Conveying direction
圖1為表示實施形態1之光學薄膜組的示意圖。 圖2為卷對面板方式之製造系統的概略圖。 圖3為片材對面板方式之製造系統的概略圖。FIG. 1 is a schematic diagram showing an optical film group according to the first embodiment. FIG. 2 is a schematic diagram of a roll-to-panel manufacturing system. FIG. 3 is a schematic diagram of a sheet-to-panel manufacturing system.
1‧‧‧卷狀光學薄膜 1‧‧‧ roll optical film
10‧‧‧帶狀光學薄膜 10‧‧‧ Ribbon Optical Film
11‧‧‧離形薄膜 11‧‧‧ Release film
12‧‧‧黏著劑層 12‧‧‧ Adhesive layer
13‧‧‧光學機能薄膜 13‧‧‧ Optical Functional Film
14‧‧‧第1表面保護薄膜 14‧‧‧The first surface protection film
2‧‧‧單片狀光學薄膜 2‧‧‧ Monolithic Optical Film
21‧‧‧離形薄膜 21‧‧‧ Release film
22‧‧‧黏著劑層 22‧‧‧ Adhesive layer
23‧‧‧光學機能薄膜 23‧‧‧ Optical Functional Film
24‧‧‧第1表面保護薄膜 24‧‧‧The first surface protection film
25‧‧‧第2表面保護薄膜 25‧‧‧Second surface protection film
a‧‧‧寬度、縱 a‧‧‧width, vertical
b‧‧‧預定間隔、橫 b‧‧‧ predetermined interval, horizontal
s‧‧‧切縫部 s‧‧‧cutting section
C‧‧‧切斷手段 C‧‧‧ cutting means
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| JP7469889B2 (en) * | 2020-01-28 | 2024-04-17 | 住友化学株式会社 | Optical laminate and method for manufacturing display device |
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| JP2001108830A (en) * | 1999-10-07 | 2001-04-20 | Sumitomo Chem Co Ltd | Optical film |
| JP2001166132A (en) * | 1999-12-06 | 2001-06-22 | Sumitomo Chem Co Ltd | Optical film |
| JP4489328B2 (en) * | 2001-07-19 | 2010-06-23 | 日東電工株式会社 | Optical member |
| JP4756626B2 (en) * | 2004-05-24 | 2011-08-24 | 日東電工株式会社 | Optical film with surface protective film and image display device |
| JP2006039238A (en) * | 2004-07-28 | 2006-02-09 | Yodogawa Medekku Kk | Sticking device for functional film such as polarizing plate and ar film |
| JP4121030B2 (en) * | 2004-08-19 | 2008-07-16 | 日東電工株式会社 | Retardation plate with protective film, manufacturing method thereof, adhesive retardation plate with protective film, and adhesive optical material with protective film |
| KR101148400B1 (en) * | 2005-06-29 | 2012-05-23 | 엘지디스플레이 주식회사 | In-plain switching mode liquid crystal display device |
| JP5362332B2 (en) * | 2008-11-19 | 2013-12-11 | 日東電工株式会社 | Surface protection sheet and use thereof |
| CN101793992B (en) * | 2009-01-30 | 2014-09-24 | 日东电工株式会社 | Method for manufacturing a laminated film |
| JP4562795B2 (en) * | 2009-02-16 | 2010-10-13 | 日東電工株式会社 | Roll material and roll material manufacturing method |
| CN102282485B (en) * | 2009-08-06 | 2012-08-29 | 住友化学株式会社 | Method for manufacturing polarizing plate |
| CN102405437B (en) * | 2009-12-09 | 2012-12-12 | 住友化学株式会社 | System for manufacturing optical display device and method for manufacturing the optical display device |
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| JP5519330B2 (en) * | 2010-02-26 | 2014-06-11 | 日東電工株式会社 | Cutting information determination method, manufacturing method of strip-shaped polarizing sheet using the same, manufacturing method of optical display unit, strip-shaped polarizing sheet, and polarizing sheet original fabric |
| JP5011444B2 (en) * | 2010-09-03 | 2012-08-29 | 日東電工株式会社 | Adhesive optical film, method for producing the same, and image display device |
| KR101442667B1 (en) * | 2011-02-10 | 2014-09-19 | 주식회사 엘지화학 | Polarizer, manufacturing method for the same and display device employing thereof |
| KR20130074879A (en) * | 2011-12-27 | 2013-07-05 | 동우 화인켐 주식회사 | Polarizer with low anti-reflection and antiglare film, and display device including touch panel with the same |
| JP5826105B2 (en) * | 2012-05-02 | 2015-12-02 | 藤森工業株式会社 | Surface protective film and optical component on which it is bonded |
| JP5782010B2 (en) * | 2012-11-09 | 2015-09-24 | 日東電工株式会社 | Optical display panel continuous manufacturing method and optical display panel continuous manufacturing system |
| JP6122337B2 (en) * | 2013-04-26 | 2017-04-26 | 日東電工株式会社 | Polarizing film and method for manufacturing the same, optical film and image display device |
| JP2015049115A (en) * | 2013-08-30 | 2015-03-16 | 住友化学株式会社 | Method for manufacturing optical member laminate |
| TWI662102B (en) * | 2014-06-18 | 2019-06-11 | 日商住友化學股份有限公司 | Polarizer, polarization plate with adhesive, and image display device |
| JP6327222B2 (en) * | 2014-09-30 | 2018-05-23 | 住友化学株式会社 | Polarizing plate, polarizing plate with adhesive, and liquid crystal display device |
| CN105717572B (en) * | 2014-12-22 | 2020-05-12 | 住友化学株式会社 | Polarizing plate with protective film and laminate comprising same |
| JP6258911B2 (en) * | 2014-12-22 | 2018-01-10 | 住友化学株式会社 | Polarizing plate with protective film and laminate including the same |
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| CN109477928B (en) | 2021-08-03 |
| TWI723194B (en) | 2021-04-01 |
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| JP6792367B2 (en) | 2020-11-25 |
| JP2018013729A (en) | 2018-01-25 |
| KR102356930B1 (en) | 2022-01-28 |
| WO2018016290A1 (en) | 2018-01-25 |
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