Laminates for manufacturing liquid crystal cells and liquid crystal cells

Abstract

The present application relates to a laminate for manufacturing a liquid crystal cell. The laminate for manufacturing a liquid crystal cell according to the present invention can provide a liquid crystal cell that has excellent adhesion between substrates and does not exhibit light leakage by controlling the adhesive strength of a protective film. The liquid crystal cell can be used as a variable transmittance device.

Description

Technology Field

[0001] The present application relates to a laminate for manufacturing a liquid crystal cell and a liquid crystal cell. Background Technology

[0002] For the long-term stability and large-area scalability of liquid crystal cells using flexible substrates, it is important to maintain the cell gap between the upper substrate and the lower substrate and to provide adhesion between the upper substrate and the lower substrate. Patent Document 1 discloses a technology for maintaining the cell gap by forming a pillar or wall-shaped pattern with the height of the cell gap on one substrate and attaching two substrates to each other through an adhesive having orientation force formed on the other substrate.

[0003] Meanwhile, to manufacture liquid crystal cells using a flexible substrate, an alignment layer is coated on the substrate using a roll-to-roll process, and then the cells are bonded using a sheet process. During the roll-to-roll process, after coating the alignment layer on the substrate, a protective film is attached to the surface of the alignment layer, and then the cutting and sheet processes are performed, thereby preventing damage to the alignment layer and contamination by foreign matter.

[0004] However, when the protective film attached to the surface of the alignment layer is peeled off and laminated with the other substrate, a problem occurred in which the adhesive component of the protective film is transferred to the upper part of the spacer, reducing the adhesion strength of the adhesive formed on the other substrate. Prior art literature

[0005] Korean Patent Publication No. 10-2016-0100575 The problem to be solved

[0006] The present application aims to provide a liquid crystal cell that has excellent adhesion between substrates and minimizes light leakage by controlling the adhesive strength of an alignment layer protective film. means of solving the problem

[0007] The present application relates to a laminate for manufacturing a liquid crystal cell. FIG. 1 is a schematic diagram of a laminate for manufacturing a liquid crystal cell according to the present application. The laminate of the present application may include a liquid crystal alignment substrate and a self-adhesive protective film. The liquid crystal alignment substrate may include a substrate (10); a spacer (not shown) existing on the substrate; and a liquid crystal alignment film (20) existing on the spacer. The self-adhesive protective film may include a support layer (40) and an adhesive layer (30) formed on one or both sides of the support layer. The liquid crystal alignment substrate and the self-adhesive protective film may be laminated together in a state where the adhesive layer is attached to the surface where the alignment film of the liquid crystal alignment substrate is present. The protective film may have a room temperature adhesion strength to a polarizer measured at a peeling speed of 300 mm / min and a peeling angle of 180 degrees of 4 gf / inch or less.

[0008] The laminate for manufacturing a liquid crystal cell according to the present application can improve the adhesion between substrates within the liquid crystal cell and improve light leakage by controlling the adhesion of the alignment film protection film.

[0010] Hereinafter, the laminate for manufacturing a liquid crystal cell of the present application will be described in detail.

[0011] In one example, the substrate may be a flexible substrate. For example, an inorganic substrate such as a glass substrate, a crystalline or amorphous silicon substrate, or a quartz substrate, or a plastic substrate may be used. As for plastic substrates, a TAC (triacetyl cellulose) substrate; a COP (cycloolefin copolymer) substrate such as a norbornene derivative substrate; Substrates including PMMA (poly(methyl methacrylate) substrate; PC (polycarbonate) substrate; PE (polyethylene) substrate; PP (polypropylene) substrate; PVA (polyvinyl alcohol) substrate; DAC (diacetyl cellulose) substrate; Pac (Polyacrylate) substrate; PES (poly ether sulfone) substrate; PEEK (polyetheretherketon) substrate; PPS (polyphenylsulfone), PEI (polyetherimide) substrate; PEN (polyethylenemaphthatlate) substrate; PET (polyethyleneterephtalate) substrate, etc., polyester substrates; PI (polyimide) substrate; PSF (polysulfone) substrate; PAR (polyarylate) substrate; or amorphous fluoropolymer, etc., may be used, but are not limited thereto. The thickness of such substrates is not particularly limited and can be selected within an appropriate range.

[0012] The above substrate may have an electrode layer formed thereon as a component for applying an external signal to a liquid crystal layer. For example, an electrode layer may exist between the substrate and a spacer. A transparent conductive layer may be used as the electrode layer. The transparent conductive layer may be formed by depositing a conductive polymer, a conductive metal, a conductive nanowire, or a metal oxide such as ITO (Indium Tin Oxide). In addition, various materials and methods for forming a transparent conductive layer are known and may be used without limitation.

[0013] The above spacer may exist on a substrate. The above spacer performs the role of maintaining the cell gap between the liquid crystal oriented substrate and the first substrate.

[0014] In one example, the spacer of the present application may be a partition-type spacer. Honeycomb-type, rectangular partition-type spacers, or random-type spacers may be applied as the partition-type spacer. In the above, a honeycomb-type or rectangular partition-type spacer refers to a case where, as known, when the shape of the partition-type spacer formed on a substrate is observed from the normal direction of the substrate, the shape formed by the partition-type spacer is a honeycomb shape or a rectangle. The honeycomb shape is typically a combination of regular hexagons, and in the case of a rectangle, there may be squares, rectangles, or a combination of squares and rectangles. Furthermore, the above-mentioned random-type spacer refers to a case where the partitions are randomly arranged, meaning that the partitions do not form a shape, or even if they do, they form a random shape rather than a standardized shape.

[0015] The pitch of the above-described bulkhead spacer can be appropriately selected considering the desired adhesion force or the efficiency of maintaining the cell gap. In this specification, the term "pitch" refers to the length of each side of a rectangle observed when the spacer is viewed from above. In this specification, observing the spacer from above means observing the spacer parallel to the normal direction of the plane of the spacer and the substrate. If the lengths of each side of the rectangle are all the same (i.e., the rectangle is a square), the length of the equal side is defined as the pitch, and if the lengths of the sides are not the same (e.g., the rectangle is a rectangle), the arithmetic mean of the lengths of all sides may be defined as the pitch.

[0016] For example, the pitch of the above-mentioned bulkhead spacer may be in the range of 100 μm to 1500 μm. In other examples, the pitch may be 150 μm or more, 200 μm or more, 250 μm or more, 300 μm or more, 350 μm or more, 400 μm or more, or 450 μm or more, or 1450 μm or less, 1400 μm or less, 1350 μm or less, 1300 μm or less, 1250 μm or less, 1200 μm or less, 1150 μm or less, or 1100 μm or less. A method for determining the pitch in a bulkhead spacer is known. For example, if the bulkhead spacer is honeycomb-shaped, the pitch is determined through the spacing of opposite sides in the hexagons forming the honeycomb, and if it is square, the pitch is determined through the length of the sides of the square. In cases where the spacing between opposite sides of the hexagons forming the honeycomb or the lengths of the sides of the squares are not constant, their average value can be defined as the pitch.

[0017] Meanwhile, the line width of the above-mentioned bulkhead spacer, for example, the width of each wall of the hexagon or square forming the honeycomb, may be within a range of, for example, about 5 μm to 50 μm. In other examples, the line width may be about 10 μm or more, or 15 μm or more, or 45 μm or less, 40 μm or less, 35 μm or less, 30 μm or less, 25 μm or less, or 20 μm or less. Within such a range, the cell gap can be appropriately maintained, and the adhesion between substrates can also be maintained excellently.

[0018] In the present application, the spacer may be manufactured by applying a conventional method for manufacturing a partition-type spacer. A partition-type spacer may be manufactured by a method using a curable resin composition (e.g., a photo-patterning method). Accordingly, the spacer in the present application may include a cured product of a curable resin composition. As for the curable resin composition, any known type applied for spacer formation may be used without special limitations. Such resin compositions are typically heat-curable resin compositions or photo-curable resin compositions, for example, UV-curable resin compositions.

[0019] Examples of heat-curable resin compositions may include, but are not limited to, silicone resin compositions, Fran resin compositions, polyurethane resin compositions, epoxy resin compositions, amino resin compositions, phenol resin compositions, urea resin compositions, polyester resin compositions, or melamine resin compositions.

[0020] As a representative UV-curable resin composition, a resin composition including an acrylic polymer, such as a polyester acrylate polymer, a polystyrene acrylate polymer, an epoxy acrylate polymer, a polyurethane acrylate polymer, a polybutadiene acrylate polymer, a silicon acrylate polymer, or an alkyl acrylate polymer, may be used, but is not limited thereto. As another example, it may be formed using a silicon polymer, and if the spacer is formed using a silicon polymer, the silicon polymer remaining in the concave region of the spacer can perform the role of a vertical alignment layer, so an additional vertical alignment layer may not be used on the substrate where the spacer is present, as described below. As the silicon polymer, known polymers based on silicon-oxygen bonds (Si-O-Si) may be used, and for example, polydimethylsiloxane (PDMS) may be used, but is not limited thereto.

[0021] The liquid crystal alignment layer may exist on a spacer. A horizontal alignment layer or a vertical alignment layer may be used as the alignment layer. As the alignment layer, a contact alignment layer such as a rubbing alignment layer or a non-contact alignment layer such as a photo-alignment layer may be used.

[0022] The self-adhesive protective film described above serves to prevent contamination of the alignment layer and improve alignment during the manufacturing process of a liquid crystal cell. The self-adhesive protective film is in the form of a laminated adhesive layer and a support layer.

[0023] In one example, the self-adhesive protective film has self-adhesive properties. As used herein, the term "self-adhesive" means a property of being able to be attached to a surface without using any other adhesive, without applying additional pressure or heat, and without using mechanical means such as push pins, screws, staples, nails, or wires.

[0024] The above adhesive layer can serve to attach a self-adhesive protective film and a liquid crystal alignment layer. The above adhesive layer comprises a polyolefin elastomer. A polyolefin elastomer is a material formed by combining an olefin resin and an olefin rubber (e.g., EPDM, ethylene propylene diene monomer) as main components. The polyolefin elastomer has polystyrene or polypropylene in the hard phase and styrene-propylene rubber (EPR), ethylene-propylene-diene rubber (EPDM), etc., in the soft phase.

[0025] Examples of the above olefin resins include high-density polyethylene (HDPE), linear low-density polyethylene (LLDPE), low-density polyethylene (LDPE), polypropylene (PP), ethylene vinyl acetate (EVA), copolymers of ethylene and propylene, copolymers of ethylene and other α-olefins, copolymers of propylene and other α-olefins, copolymers of ethylene and propylene and other α-olefins, copolymers of ethylene and other ethylenically unsaturated monomers, etc.

[0026] Examples of the above α-olefins include 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 4-methyl-1-pentene, 4-methyl-1-hexene, etc. Among these, the above α-olefins are preferably 1-butene, 1-hexene, 1-octene, and 4-methyl-1-pentene. In addition, examples of the above other ethylenically unsaturated monomers include vinyl acetate, acrylic acid, acrylic acid ester, methacrylic acid, methacrylic acid ester, vinyl alcohol, etc. Meanwhile, the above α-olefins or the above other ethylenically unsaturated monomers may be used alone or may be used in combination of two or more types.

[0027] The thickness of the adhesive layer may be appropriately selected in consideration of the purpose of the present application. In one example, the thickness of the adhesive layer may be 5 µm to 30 µm. Specifically, the thickness of the adhesive layer may be 7 µm or more, 9 µm or more, 11 µm or more, 13 µm or more, 15 µm or more, 17 µm or more, or 19 µm or more. Additionally, the thickness of the adhesive layer may be 28 µm or less, 26 µm or less, 24 µm or less, or 22 µm or less. If the thickness range of the adhesive layer is within the above range, it may be advantageous for exhibiting the adhesive strength of the adhesive layer intended by the present application.

[0028] The substrate forming the support layer is not particularly limited, but two or more selected from the group consisting of low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), medium-density polyethylene (MDPE), high-density polyethylene (HDPE), and Block-PP (Poly-Propylene Block Copolymer) may be used. Among these, it is particularly preferable to form a mixture of Block-PP and HDPE, a mixture of LDPE and HDPE, or a mixture of MDPE and HDPE, considering the cutting and processability of the self-adhesive protective film. At this time, the resin composition of the support layer used is generally used by blending, but this is not necessarily limited.

[0029] The thickness of the support layer may be appropriately selected in consideration of the purpose of the present application. In one example, the thickness of the support layer may be 5 µm to 30 µm. Specifically, the thickness of the support layer may be 7 µm or more, 9 µm or more, 11 µm or more, 13 µm or more, 15 µm or more, 17 µm or more, or 19 µm or more. Additionally, the thickness of the support layer may be 28 µm or less, 26 µm or less, 24 µm or less, or 22 µm or less.

[0030] In one example, the self-adhesive protective film can be manufactured by co-extrusion. Co-extrusion is a method in which two or more different raw materials are melted in separate extruders, the molten resin is sent into a die to be laminated in multiple layers, and the multilayered raw materials are cooled by various methods. Through co-extrusion, a protective film of a uniform thickness can be formed with improved efficiency, and since there is minimal degradation of film quality during extrusion, the adhesive layer and the support layer can maintain their respective characteristics, resulting in a film with high transparency and flexibility. For the co-extrusion method, an inflation method using a circular die and a T-die method using a flat die can be used, and in the present invention, it is preferable to use the T-die method.

[0031] The self-adhesive protective film of the present application is manufactured by a co-extrusion method, and compared to a general coated type protective film coated with an adhesive, the adhesive component of the protective film does not remain on the upper part of the spacer, so when it is bonded to the adhesive layer of the first substrate described later, the adhesion strength is not reduced, thereby providing a liquid crystal cell with improved durability and light leakage.

[0032] The above self-adhesive protective film may have a room temperature adhesion force of 4 gf / inch or less for a polarizer measured at a peeling speed of 300 mm / min and a peeling angle of 180 degrees. When the room temperature adhesion force is within the above range, it is possible to prevent light leakage of the liquid crystal cell by maintaining the adhesion force between the liquid crystal alignment substrate and the first substrate without causing scratches on the adhesive layer described later.

[0033] In conventional liquid crystal aligning substrates, when a protective film is peeled off and the substrate with an adhesive layer is laminated, there was a problem where the adhesive component of the protective film was transferred onto the spacers of the liquid crystal aligning substrate, thereby reducing the adhesion strength of the adhesive layer. When the adhesion strength between substrates within the liquid crystal cell is reduced in this way, the spacers fail to stay fixed and slide, which can cause scratches on the adhesive layer. Scratches formed on the adhesive layer can reduce the durability of the liquid crystal cell and cause light leakage.

[0034] However, when using a protective film having a room temperature adhesion strength of 4 gf / inch or less for a polarizer measured at a peeling speed of 300 mm / min and a peeling angle of 180 degrees according to the present application, no adhesive component remains on the upper surface of the spacer, so that when the liquid crystal alignment substrate adheres to the adhesive layer of the first substrate, the adhesion strength is not reduced, thereby providing a liquid crystal cell with improved durability and light leakage.

[0036] The present application also relates to a method for manufacturing a laminate for manufacturing the liquid crystal cell.

[0037] In one example, the method for manufacturing the laminate comprises the steps of: forming a liquid crystal alignment layer in an area where a spacer is present on a substrate having a spacer formed on its surface; and attaching an adhesive layer of a protective film to the surface of the substrate where the liquid crystal alignment layer is formed, the adhesive layer of which has a room temperature adhesion strength to a polarizer measured at a peeling speed of 300 mm / min and a peeling angle of 180 degrees of 4 gf / inch or less.

[0038] In the above manufacturing method, regarding matters that overlap with the above-described laminate for manufacturing liquid crystal cells, the contents described in the laminate may be applied in the same way. The manufacturing method of the above laminate may be carried out in a roll-to-roll manner. Therefore, the above laminate may be suitable for manufacturing liquid crystal cells using a flexible substrate.

[0040] In addition, the present application is an invention relating to a liquid crystal cell using a laminate for manufacturing the liquid crystal cell. FIG. 2 is a schematic diagram of the liquid crystal cell of the present application. The liquid crystal cell of the present application comprises a liquid crystal alignment substrate (201) obtained by peeling off a self-adhesive protective film from the laminate for manufacturing the liquid crystal cell of the present invention, a liquid crystal layer (300) containing a liquid crystal compound, and a first substrate (101) different from the liquid crystal alignment substrate.

[0041] The liquid crystal cell can be manufactured by the step of peeling off a self-adhesive protective film, placing a liquid crystal oriented substrate obtained from the peeling off and a first substrate different from the liquid crystal oriented substrate oppositely, and forming a liquid crystal layer containing a liquid crystal compound between the oppositely placed substrates.

[0042] The first substrate (101) may use known substrate materials without special limitations, just like the liquid crystal oriented substrate (201). For example, inorganic substrates such as glass substrates, crystalline or amorphous silicon substrates, or quartz substrates, or plastic substrates may be used. As for plastic substrates, TAC (triacetyl cellulose) substrates; COP (cyclo olefin copolymer) substrates such as norbornene derivative substrates; A substrate including PMMA (poly(methyl methacrylate) substrate; PC (polycarbonate) substrate; PE (polyethylene) substrate; PP (polypropylene) substrate; PVA (polyvinyl alcohol) substrate; DAC (diacetyl cellulose) substrate; Pac (Polyacrylate) substrate; PES (poly ether sulfone) substrate; PEEK (polyetheretherketon) substrate; PPS (polyphenylsulfone), PEI (polyetherimide) substrate; PEN (polyethylenemaphthatlate) substrate; PET (polyethyleneterephtalate) substrate, etc., polyester substrate; PI (polyimide) substrate; PSF (polysulfone) substrate; PAR (polyarylate) substrate or amorphous fluoropolymer, etc., may be used.

[0043] An adhesive layer (102) may be formed on the first surface of the first substrate. In one example, the adhesive layer may be a transparent adhesive layer having a light transmittance of 90% or more. In a conventional liquid crystal aligning substrate, when a protective film is peeled off and the substrate with the adhesive layer formed thereon is laminated, there was a problem in that the adhesive component of the protective film was transferred onto the spacer of the liquid crystal aligning substrate, thereby reducing the adhesion strength of the adhesive layer. When the adhesion strength between substrates within the liquid crystal cell is reduced in this way, the spacer may not be fixed and may slide, causing scratches on the adhesive layer. Scratches formed on the adhesive layer can reduce the durability of the liquid crystal cell and cause light leakage.

[0044] However, when using a self-adhesive protective film having a room temperature adhesion strength of 4 gf / inch or less for a polarizer measured at a peeling speed of 300 mm / min and a peeling angle of 180 degrees according to the present application, no adhesive component remains on the upper surface of the spacer, so that when a liquid crystal oriented substrate is bonded to the adhesive layer of the first substrate, the adhesion strength is not reduced and a liquid crystal cell with improved light leakage can be provided.

[0045] In one example, the adhesive layer may have a vertical orientation force. In this specification, an adhesive having a vertical orientation force may refer to a material that simultaneously has a vertical orientation force and an adhesive force for liquid crystal molecules. Through the adhesive layer, excellent adhesion between the first substrate and the liquid crystal orientation substrate can be induced, and a desired initial orientation mode can be realized.

[0046] The type of adhesive layer formed on the first surface of the first substrate is not particularly limited. Various types of adhesives known in the industry as so-called OCA (Optically Clear Adhesive) or OCR (Optically Clear Resin) can be combined with a liquid crystal alignment film of a liquid crystal aligning substrate to induce suitable orientation of the liquid crystal compound.

[0047] In one embodiment of the present invention, a silicone-based adhesive may be used as the adhesive having vertical orientation. As the silicone-based adhesive, a cured product of a composition containing a curable silicone compound may be used. Since a curable silicone compound may exhibit vertical orientation ability due to its surface characteristics, an appropriate type may be selected from among known silicone adhesives. The type of composition containing a curable silicone compound (hereinafter referred to as the curable silicone composition) is not particularly limited, and, for example, a heat-curable silicone composition or a UV-curable silicone composition may be used.

[0048] In one example, the above-mentioned curable silicone composition may be an addition-curable silicone composition comprising (1) an organopolysiloxane containing two or more alkenyl groups in the molecule and (2) an organopolysiloxane containing two or more silicon-bonded hydrogen atoms in the molecule. Such silicone compounds may form a cured product by an addition reaction in the presence of a catalyst, for example, a platinum catalyst.

[0049] More specific examples of the above (1) organopolysiloxane that can be used in the present application include: a molecular chain bi-terminal trimethylsiloxane blockade dimethylsiloxane-methylvinylsiloxane copolymer, a molecular chain bi-terminal trimethylsiloxane blockade methylvinylpolysiloxane, a molecular chain bi-terminal trimethylsiloxane blockade dimethylsiloxane-methylvinylsiloxane-methylphenylsiloxane copolymer, a molecular chain bi-terminal dimethylvinylsiloxane blockade dimethylpolysiloxane, a molecular chain bi-terminal dimethylvinylsiloxane blockade methylvinylpolysiloxane, a molecular chain bi-terminal dimethylvinylsiloxane blockade dimethylsiloxane-methylvinylsiloxane copolymer, a molecular chain bi-terminal dimethylvinylsiloxane-methylvinylsiloxane-methylphenylsiloxane copolymer, R 1 2SiO 1 / 2 Siloxane units and R indicated by 1 2R 2 SiO 1 / 2 Siloxane units represented by and SiO4 / 2 Organopolysiloxane copolymer containing siloxane units represented by, R 1 2R 2 SiO 1 / 2 Siloxane units represented by and SiO 4 / 2 Organopolysiloxane copolymer containing siloxane units represented by, R 1 R 2 SiO 2 / 2 Siloxane units and R indicated by 1 SiO 3 / 2 Siloxane units or R indicated by 2 SiO 3 / 2 Examples include organopolysiloxane copolymers containing siloxane units represented by, and mixtures of two or more of the above, but are not limited thereto.

[0050] In the above, R 1 The hydrocarbon group other than the alkenyl group may be, specifically, an alkyl group such as a methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, or heptyl group; an aryl group such as a phenyl group, tolyl group, xylyl group, or naphthyl group; an aralkyl group such as a benzyl group or phenenthyl group; or a halogen-substituted alkyl group such as a chloromethyl group, 3-chloropropyl group, or 3,3,3-trifluoropropyl group.

[0051] Also, R above 2 is an alkenyl group, specifically, it may be a vinyl group, an allyl group, a butenyl group, a pentenyl group, a hexenyl group, or a heptenyl group.

[0052] More specific examples of the organopolysiloxane (2) that can be used in the present invention include: methylhydrogenpolysiloxane with trimethylsiloxane group blockade at both ends of the molecular chain, dimethylsiloxane-methylhydrogen copolymer with trimethylsiloxane group blockade at both ends of the molecular chain, dimethylsiloxane-methylhydrogensiloxane-methylphenylsiloxane copolymer with trimethylsiloxane group blockade at both ends of the molecular chain, dimethylpolysiloxane with dimethylhydrogensiloxane group blockade at both ends of the molecular chain, dimethylsiloxane-methylphenylsiloxane copolymer with dimethylhydrogensiloxane group blockade at both ends of the molecular chain, methylphenylpolysiloxane with dimethylhydrogensiloxane group blockade at both ends of the molecular chain, R 1 3SiO 1 / 2 Siloxane units and R indicated by 1 2HSiO 1 / 2 Siloxane units represented by and SiO 4 / 2 Organopolysiloxane copolymer containing siloxane units represented by, R 1 2HSiO 1 / 2 Siloxane units represented by and SiO 4 / 2 Organopolysiloxane copolymer containing siloxane units represented by, R 1 HSiO 2 / 2 Siloxane units and R indicated by 1 SiO 3 / 2 Siloxane units or HSiO represented by 3 / 2 Examples include organopolysiloxane copolymers comprising siloxane units represented by , and mixtures of two or more of the above, but are not limited thereto. In the above, R 1 The hydrocarbon group other than the alkenyl group may be, specifically, an alkyl group such as a methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, or heptyl group; an aryl group such as a phenyl group, tolyl group, xylyl group, or naphthyl group; an aralkyl group such as a benzyl group or phenenthyl group; or a halogen-substituted alkyl group such as a chloromethyl group, 3-chloropropyl group, or 3,3,3-trifluoropropyl group.

[0053] The content of the above (2) organopolysiloxane is not particularly limited as long as it is included in an amount sufficient to allow for proper curing. For example, the above (2) organopolysiloxane may be included in an amount such that for every alkenyl group included in the above (1) organopolysiloxane, there are 0.5 to 10 silicon-bonded hydrogen atoms. Within this range, sufficient curing can be carried out and heat resistance can be secured.

[0054] The above addition-curable silicone composition may further include platinum or a platinum compound as a catalyst for curing. There are no particular restrictions on the specific type of such platinum or platinum compound. The proportion of the catalyst should also be adjusted to a level where appropriate curing can be achieved.

[0055] The above addition-curable silicone composition may also include appropriate additives in appropriate proportions that are necessary for improving storage stability, handling, and workability.

[0056] In another example, the above silicone composition may be a condensation-curable silicone composition and may include, for example, (a) an alkoxy group-containing siloxane polymer; and (b) a hydroxyl group-containing siloxane polymer.

[0057] The above (a) siloxane polymer may be, for example, a compound represented by the following chemical formula 1.

[0058] [Chemical Formula 1]

[0059] R 1 a R 2 b SiO c (OR 3 ) d

[0060] R in Chemical Formula 1 1 and R 2 , each independently, represents a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group, and R 3 represents an alkyl group, and R 1 , R2 and R 3 If there are multiple instances of each, they may be identical or different from one another, a and b each independently represent a number greater than or equal to 0 and less than 1, a+b represents a number greater than 0 and less than 2, c represents a number greater than 0 and less than 2, d represents a number greater than 0 and less than 4, and a+b+c×2+d is 4.

[0061] In the definition of Formula 1, the monovalent hydrocarbon may be, for example, an alkyl group having 1 to 8 carbon atoms, a phenyl group, a benzyl group, or a tolyl group, and the alkyl group having 1 to 8 carbon atoms may be a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, or an octyl group, etc. In addition, in the definition of Formula 1, the monovalent hydrocarbon group may be substituted with a known substituent such as a halogen, an amino group, a mercapto group, an isocyanate group, a glycidyl group, a glycidoxy group, or a ureido group.

[0062] In the definition of Chemical Formula 1, R 3 Examples of alkyl groups include methyl groups, ethyl groups, propyl groups, isopropyl groups, or butyl groups. Among the alkyl groups, methyl groups or ethyl groups are commonly used, but are not limited thereto.

[0063] Among the polymers of Chemical Formula 1, branched or tertiarily cross-linked siloxane polymers may be used. Additionally, hydroxyl groups may remain in this (a) siloxane polymer to the extent that the purpose is not compromised, specifically to the extent that the dealolysis reaction is not inhibited.

[0064] The above (a) siloxane polymer can be prepared by hydrolyzing and condensing, for example, a polyfunctional alkoxysilane or a polyfunctional chlorosilane. An average person skilled in the art can easily select a suitable polyfunctional alkoxysilane or chlorosilane according to the desired (a) siloxane polymer and can also easily control the conditions of the hydrolysis and condensation reaction using the same. Meanwhile, when preparing the above (a) siloxane polymer, a suitable monofunctional alkoxysilane may also be used in combination depending on the purpose.

[0065] As the above (a) siloxane polymer, commercially available organosiloxane polymers such as X40-9220 or X40-9225 of Shin-Etsu Silicon, XR31-B1410, XR31-B0270 or XR31-B2733 of GE Toray Silicon may be used.

[0066] As (b) a hydroxyl group-containing siloxane polymer included in the above condensation-curable silicone composition, for example, a compound represented by the following chemical formula 2 may be used.

[0067] [Chemical Formula 2]

[0068]

[0069] In Chemical Formula 2, R 4 and R 5 Each independently represents a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group, and R 4 and R 5 In cases where each of these exists in multiple quantities, the above may be identical or different from each other, and n represents an integer from 5 to 2,000.

[0070] In the definition of Chemical Formula 2, specific types of monovalent hydrocarbon groups include, for example, hydrocarbon groups identical to those in Chemical Formula 1.

[0071] The above (b) siloxane polymer can be prepared by hydrolyzing and condensing, for example, dialkoxysilane and / or dichlorosilane. An average person skilled in the art can easily select a suitable dialkoxysilane or dichlorosilane according to the desired (b) siloxane polymer and can also easily control the conditions of the hydrolysis and condensation reaction using the same. As the above (b) siloxane polymer, commercially available difunctional organosiloxane polymers such as GE Toray Silicon's XC96-723, YF-3800, YF-3804, etc., can be used.

[0072] The addition-curing or condensation-curing silicone compositions described above are examples of materials for forming the silicone adhesives applied in this application. That is, basically, all silicone adhesives known in the industry as OCA or OCR, etc., can be applied in this application.

[0073] The type of adhesive having vertical orientation is not particularly limited and can be appropriately selected according to the intended use. For example, a solid adhesive, a semi-solid adhesive, an elastic adhesive, or a liquid adhesive may be appropriately selected and used. A solid adhesive, a semi-solid adhesive, or an elastic adhesive may be referred to as a pressure-sensitive adhesive (PSA) and may be cured before the bonding targets are bonded. In this application, for example, a polydimethylsiloxane adhesive or a polymethylvinylsiloxane adhesive may be used as a PSA-type adhesive having vertical orientation, and an alkoxysilicone adhesive may be used as an OCR-type adhesive having vertical orientation, but is not limited thereto.

[0074] The thickness of the adhesive layer is not particularly limited and can be selected within an appropriate range to secure the desired adhesive strength. The thickness may be in the range of approximately 1 µm to 50 µm. In other examples, the thickness may be 2 µm or more, 3 µm or more, 4 µm or more, 5 µm or more, 6 µm or more, 7 µm or more, 8 µm or more, 9 µm or more, or 10 µm or more, or 45 µm or less, 40 µm or less, 35 µm or less, 30 µm or less, 25 µm or less, 20 µm or less, 15 µm or less, or 10 µm or less.

[0075] Typically, liquid crystal alignment layers are formed on both sides of two opposing substrates, but by forming an adhesive layer instead of a liquid crystal alignment layer on the first substrate as described above, and forming a liquid crystal alignment layer only on the liquid crystal alignment substrate, an alignment state of a liquid crystal compound that is very useful for specific applications (e.g., smart windows or eyewear) can be obtained. Therefore, a liquid crystal alignment layer may not be formed on the first substrate of the liquid crystal cell of the present application.

[0076] A liquid crystal layer (300) may exist between the liquid crystal orientation substrate (201) and the first substrate (101). The liquid crystal layer may include a liquid crystal compound. Any type of liquid crystal compound may be used as long as its orientation direction can be changed by the application of an external signal. For example, smectic liquid crystal compounds, nematic liquid crystal compounds, or cholesteric liquid crystal compounds may be used as liquid crystal compounds. In addition, so that its orientation direction can be changed by the application of an external action, the liquid crystal compound may be, for example, a compound that does not have polymerizable groups or crosslinking groups. In this specification, the term "external action" may refer to any external factor that can affect the behavior of a material contained within the liquid crystal layer, such as external voltage. Accordingly, a state without external action may mean a state without the application of external voltage, etc.

[0077] The liquid crystal layer may comprise a liquid crystal compound having a positive dielectric anisotropy, or the liquid crystal layer may exhibit the aforementioned dielectric anisotropy. The absolute value of the dielectric anisotropy may be appropriately selected in consideration of the purpose of this application. The term "dielectric anisotropy (Δε)" refers to the horizontal dielectric constant (ε / / ) and normal permittivity (ε ⊥ ) difference (ε / / - ε ⊥ It may mean ). In this specification, the term horizontal permittivity (ε / / ) refers to the permittivity value measured along the direction of the electric field when a voltage is applied such that the direction of the electric field caused by the applied voltage is substantially horizontal to the direction of the liquid crystal molecules, and the normal permittivity (ε ⊥ ) refers to the permittivity value measured along the direction of the electric field when a voltage is applied such that the direction of the electric field due to the applied voltage is substantially perpendicular to the direction of the liquid crystal molecule.

[0078] The liquid crystal layer may include a liquid crystal compound having a refractive index anisotropy (Δn) in the range of about 0.05 to 0.1. The refractive index anisotropy (Δn) referred to in this application is the difference (ne-no) between the extraordinary refractive index (ne) and the ordinary refractive index (no), which can be verified using an Abbe refractometer.

[0079] The liquid crystal layer may additionally include a dichroic dye. If the liquid crystal layer includes a dichroic dye, it may be advantageous for controlling light transmission characteristics. If the liquid crystal layer includes a dichroic dye, the liquid crystal layer may be referred to as a guest host liquid crystal layer. In this specification, the term "dye" may refer to a material capable of intensively absorbing and / or modifying light within at least a portion or the entire range of the visible light region, for example, within the wavelength range of 400 nm to 700 nm, and the term "dichroic dye" may refer to a material capable of anisotropic absorption of light within at least a portion or the entire range of the visible light region. Such dyes are known, for example, azo dyes or anthraquinone dyes, but are not limited thereto.

[0080] The liquid crystal layer may additionally include a chiral agent. When the liquid crystal layer includes a chiral agent, a twisted orientation state can be realized. Chiral agents (chiral agents or chiral dopants) that may be included in the liquid crystal layer can be used without particular limitation as long as they can induce the desired twisting without impairing liquid crystal properties, for example, nematic regularity. A chiral agent for inducing twisting in liquid crystal molecules needs to include at least chirality in its molecular structure. Examples of chiral agents may include, for example, compounds having one or more asymmetric carbons, compounds having an asymmetric point on a heteroatom such as chiral amines or chiral sulfoxides, or compounds having an axially asymmetric, optically active site having an axial agent such as cumulene or binaphthol. The chiral agent may be, for example, a low molecular weight compound with a molecular weight of 1,500 or less. As for the chiral zero, commercially available chiral nematic liquid crystals, for example, the chiral dopant liquid crystal S-811 sold by Merck or the LC756 from BASF, may be used.

[0081] An electrode layer (103) may be formed on the first substrate as a component for applying an external signal to the liquid crystal layer. For example, an electrode layer may exist between the first substrate and the adhesive layer. The description of the electrode layer may be applied in the same way as the description of the electrode layer (203) used in the liquid crystal orientation substrate.

[0082] A liquid crystal alignment substrate obtained by peeling off a self-adhesive protective film from a laminate for manufacturing a liquid crystal cell has a structure in which a spacer (S) is formed on a substrate (201) and a liquid crystal alignment film (202) is formed on the spacer. The same details as described above may be applied to the substrate, the spacer, and the liquid crystal alignment film. Additionally, an electrode layer (203) may be formed between the substrate (201), the spacer (S), and the alignment film (202) in the liquid crystal alignment substrate, and the same details as described above may also be applied to the description of the electrode layer.

[0083] The liquid crystal cell driving modes of the present application may be exemplified, for example, DS (Dynamic Scattering) mode, ECB (Electrically Controllable Birefringence) mode, IPS (In-Plane Switching) mode, FFS (Fringe-Field Switching) mode, OCB (Optially Compensated Bend) mode, VA (Vertical Alignment) mode, MVA (Multi-domain Vertical Alignment) mode, PVA (Patterned Vertical Alignment) mode, HAN (Hybrid Aligned Nematic) mode, TN (Twisted Nematic) mode, STN (Super Twisted Nematic) mode, or R-TN (Reversed Twisted Nematic) mode.

[0084] A liquid crystal cell can switch the orientation state of a liquid crystal layer according to an applied voltage. In one example, when no voltage is applied to the liquid crystal cell, the liquid crystal layer may have a first orientation state, and when voltage is applied to the liquid crystal cell, the liquid crystal layer may have a second orientation state different from the first orientation state. Examples of the first orientation state and / or the second orientation state include a horizontal orientation state, a vertical orientation state, a twist orientation state, an oblique orientation state, a hybrid orientation state, etc.

[0085] In this specification, "horizontal orientation state" is a state in which the directors of the liquid crystal compound within the liquid crystal layer are arranged approximately parallel to the plane of the liquid crystal layer, and for example, the angle formed by the directors with respect to the plane of the liquid crystal layer may be, for example, within the range of about -10 degrees to 10 degrees or -5 degrees to 5 degrees, or approximately about 0 degrees.

[0086] In this specification, "vertical orientation state" refers to a state in which the directors of the liquid crystal compound within the liquid crystal layer are arranged approximately perpendicularly to the plane of the liquid crystal layer, and for example, the angle formed by the directors with respect to the plane of the liquid crystal layer may be, for example, within the range of about 80 to 100 degrees or 85 to 95 degrees, or approximately about 90 degrees.

[0087] In this specification, "twisted orientation state" may refer to a helical structure in which the directors of liquid crystal compounds within a liquid crystal layer are twisted along a virtual helical axis to form layers. The twisted orientation state can be implemented in a vertical, horizontal, or oblique orientation state. Specifically, the vertical twisted orientation mode is a state in which individual liquid crystal compounds are vertically oriented and twisted along a helical axis to form layers; the horizontal twisted orientation mode is a state in which individual liquid crystal compounds are horizontally oriented and twisted along a helical axis to form layers; and the oblique twisted orientation mode is a state in which individual liquid crystal compounds are obliquely oriented and twisted along a helical axis to form layers.

[0088] In this specification, "hybrid orientation state" may mean an orientation state in which the tilt angle, which is the angle formed by the directioner of a liquid crystal compound within the liquid crystal layer with respect to the plane of the liquid crystal layer, gradually increases or decreases along the thickness direction of the liquid crystal layer.

[0089] In this specification, the direction of a liquid crystal molecule or liquid crystal compound may refer to the optical axis or slow axis of the liquid crystal layer. The direction of the liquid crystal molecule may refer to the long axis direction when the liquid crystal molecule is rod-shaped, and may refer to the axis in the normal direction of the disc plane when the liquid crystal molecule is discotic-shaped. When multiple liquid crystal compounds with different direction factors exist within the liquid crystal layer, the direction is the vector sum.

[0090] In one example, the initial orientation of the liquid crystal compound in the liquid crystal layer may be vertical orientation or an orientation state similar to vertical orientation. This orientation state is obtained by applying a vertical alignment layer as the liquid crystal alignment layer. Such an orientation is useful in devices implementing so-called R-TN (Reversed Twisted Nematic) orientation.

[0092] The liquid crystal cell described above can be used as a variable transmittance device. Examples of applications where the variable transmittance device may be applied include openings in enclosed spaces such as buildings, containers, or vehicles, such as windows or sunroofs, or eyewear. The scope of eyewear described above may include all eyewear designed to allow an observer to view the outside through lenses, such as ordinary glasses, sunglasses, sports goggles, helmets, or augmented reality experience devices. Effects of the invention

[0093] The laminate for manufacturing a liquid crystal cell according to the present application has the effect of providing a liquid crystal cell that can improve durability and minimize light leakage by controlling the adhesive force of the alignment film protective film, thereby maintaining the adhesion between substrates within the liquid crystal cell. Brief explanation of the drawing

[0094] FIG. 1 is a schematic diagram of a laminate for manufacturing a liquid crystal cell according to the present application. Figure 2 is a schematic diagram of a liquid crystal cell of the present application. Figure 3 is an image of the liquid crystal cell of Example 2 observed with an optical microscope. Figure 4 is an image of the liquid crystal cell of Comparative Example 1 observed with an optical microscope. Figure 5 is an image of the liquid crystal cell of Example 2 observed with the naked eye. Figure 6 is an image of the liquid crystal cell of Comparative Example 1 observed with the naked eye. Specific details for implementing the invention

[0095] The present invention will be explained in more detail below through embodiments according to the present invention and comparative examples not according to the present invention, but the scope of the present invention is not limited by the embodiments presented below.

[0098] Preparation Example 1. Adhesive coating type Manufacturing of protective films

[0099] An adhesive solution was coated onto a PET substrate film to a thickness of 25 μm, and the solvent was dried and cured by heat treatment for 30 seconds at temperatures of 60, 85, 100, 110, 110, 100, and 80°C, respectively, in a 7-zone dryer to form an adhesive layer, after which a silicone release film was laminated onto the adhesive layer. The adhesive solution used was an improved version of LG Chem's E6, and it includes an adhesive and a curing agent. The adhesive is an acrylic adhesive, and the oligomers used in the synthesis are EHA (Ethylhexyl acrylate), HEA (Hydroxyethyl acrylate), and HBA (Hydroxybutyl acrylate), and the curing agent is an isocyanate-based curing agent.

[0101] Examples 1

[0102] A PET (poly(ethylene terephthalate)) film (SKC) with a thickness of approximately 145 μm was used, on which an ITO (Indium Tin Oxide) layer was deposited to a thickness of approximately 30 nm. On the ITO layer of the PET film, a square partition-type spacer was first formed, having a pitch of approximately 350 μm, a height (cell gap) of approximately 8 μm, and a line width of approximately 15 μm. A vertical alignment layer (Nissan, 5661LB3) was formed to a thickness of approximately 300 nm on the formed spacer.

[0103] A liquid crystal alignable substrate was manufactured by laminating a vertical alignment layer and the adhesive layer of a self-adhesive protective film (Ilshin Chemical Co., Ltd., LF-CS309) so that they face each other. The self-adhesive protective film has a structure in which a polyolefin-based elastomer (POE) adhesive layer, a polyethylene (PE) support layer, and a polyethylene (PE) release layer are sequentially laminated. The tensile strength (KS M 3509) of the protective film is 2000 kgf / cm² in both the transverse and longitudinal directions. 3 , 2200 kgf / cm 3 It was, and the elongation (KS M 3509) was 700% in the transverse direction and 500% in the longitudinal direction, respectively.

[0105] Examples 2

[0106] A solution of a silicone adhesive composition (ShinEtsu, KR3700) mixed in a toluene solvent to a solid content concentration of 25 wt% was bar-coated onto a fluorine release film (Nippa, FSC6) and dried at approximately 150°C for 5 minutes to form a thickness of 10 μm. The release film coated with the silicone adhesive was laminated with a PET (poly(ethylene terephthalate)) film (SKC) with a thickness of approximately 145 μm, on which an ITO (Indium Tin Oxide) layer was deposited to a thickness of approximately 30 nm, to form a first substrate.

[0107] After peeling off the release film of the first substrate and peeling off the self-adhesive protective film from the liquid crystal alignment substrate of Example 1, the vertical alignment layer formed on the liquid crystal alignment substrate was rubbed in one direction. Then, a liquid crystal composition was coated on the surface of the vertical alignment layer of the liquid crystal alignment substrate, and the silicone adhesive layer exposed by peeling off the release film from the first substrate was laminated so that it faced the surface of the liquid crystal alignment substrate coated with the liquid crystal composition. The coated liquid crystal composition used was a composition comprising a liquid crystal compound with △n=0.094 (JNC, SHIN-7002XX T12) and a chiral dopant (Merck, S811), and the content of the chiral dopant was formed so that the pitch was approximately 20 μm.

[0108] After the above lamination, a PVA (poly(vinyl alcohol)) polarizing layer was attached to the surface of the first substrate where the ITO layer was not formed and to the surface of the liquid crystal alignment substrate where the ITO layer was not formed, respectively. Each polarizing layer was attached so that its absorption axis was perpendicular to the other, and a liquid crystal cell was manufactured by aligning the absorption axis of the polarizing layer attached to the outer edge of the first substrate with the rubbing direction of the alignment layer.

[0110] Comparative example 1

[0111] A liquid crystal cell was manufactured by the same method as in Example 2, except that the release film was removed from the adhesive-coated protective film prepared in Example 1 instead of the self-adhesive protective film, and the adhesive layer was laminated so that the vertical alignment film formed on the liquid crystal alignment substrate faced the adhesive layer.

[0113] Experimental Example 1. Evaluation of the adhesion of the protective film to the polarizer

[0114] After removing the release film from the self-adhesive protective film of Example 1 and the adhesive-coated protective film of Preparation Example 1, the protective film was attached to one of the TAC films of a polarizing plate having a structure of TAC film / PVA / TAC film. Using a TA device (Texture analyzer, manufactured by Stable Microsystems, UK), the adhesive strength of the protective film was measured while peeling the protective film from the polarizing plate at a peeling speed of 300 mm / min and a peeling angle of 180 degrees.

[0116] Experimental Example 2. liquid crystal cell Adhesion strength evaluation

[0117] In the liquid crystal cells prepared in Example 2 and Comparative Example 1, the adhesion strength was evaluated by measuring the 90-degree peeling force between the silicon adhesive layer of the first substrate and the spacer of the liquid crystal orientation substrate using a TA instrument (Texture analyzer, manufactured by Stable Microsystems, UK).

[0119] Experimental Example 3. Transmittance Measurement

[0120] The transmittance at 0V of the liquid crystal cells prepared in Example 2 and Comparative Example 1 above was compared. The transmittance was measured according to ASTM D1003 standards using a haze meter (NDH5000SP, Sekos).

[0121] Specifically, when light with a wavelength of 380 nm to 780 nm is incident on a measurement target within an integrating sphere, the incident light is separated by the measurement target into diffused light (DT, the sum of diffused and emitted light) and direct light (PT, light emitted in the frontal direction excluding diffused light). The diffused light and direct light can be measured by focusing them onto a light receiving element within the integrating sphere. That is, through the above process, the total transmitted light (TT) is defined as the sum of the diffused light (DT) and the direct light (PT) (DT+PT), and the total transmitted light represents the total transmittance.

[0123] Example 2 Comparative Example 1 Adhesion strength of protective film to polarizer (gf / inch) 3.6 10.4 Liquid crystal cell adhesion (gf / inch) 33.3 14.3 Transmittance at 0V (%) 0.17 0.65

[0124] Referring to Table 1 above, Comparative Example 1, which used an adhesive coating type protective film, had the adhesive component transferred to the upper part of the spacer, resulting in reduced adhesion to the silicone adhesive layer, whereas Example 2, which used a self-adhesive type protective film, showed excellent adhesion between the spacer and the silicone adhesive layer.

[0125] In addition, referring to FIGS. 4 and 6, the liquid crystal cell of Comparative Example 1, in which the adhesion between the spacer and the silicone adhesive layer is weak, experienced slippage of the spacer during the liquid crystal cell bonding process, causing scratches on the adhesive layer and resulting in light leakage in the liquid crystal cell. On the other hand, referring to FIGS. 3 and 5, it was confirmed that Example 2 had excellent adhesion between the spacer and the silicone adhesive layer, so no light leakage occurred and the transmittance in the blocking mode was low. Explanation of the symbols

[0126] 10: Substrate 20: Liquid crystal alignment layer 30: Adhesive layer 40: Support base 101: First substrate 102: Adhesive layer 103, 203: Electrode layer 202: Liquid crystal alignment layer 201: Liquid crystal alignment substrate 300: Liquid crystal layer S: Spacer

Claims

Claim 1 A liquid crystal alignment substrate comprising a substrate, a spacer existing on the substrate, and a liquid crystal alignment layer existing on the spacer; A self-adhesive protective film having a structure in which a support layer and an adhesive layer are laminated; wherein the liquid crystal alignment substrate and the self-adhesive protective film are laminated together in a state in which the adhesive layer of the self-adhesive protective film is attached to a surface on which a liquid crystal alignment film of the liquid crystal alignment substrate exists, the support layer of the self-adhesive protective film has a thickness within the range of 17 μm to 30 μm and comprises a mixture of Block-PP (Poly-Propylene Block Copolymer) and High-Density Polyethylene (HDPE), a mixture of Low-Density Polyethylene (LDPE) and High-Density Polyethylene (HDPE), or a mixture of Medium-Density Polyethylene (MDPE) and High-Density Polyethylene (HDPE), and the adhesive layer of the self-adhesive protective film comprises a polyolefin-based elastomer, and the self-adhesive protective film is for manufacturing a liquid crystal cell having a room temperature adhesion strength to a polarizer measured at a peeling speed of 300 mm / min and a peeling angle of 180 degrees of 4 gf / inch or less. Laminated structure. Claim 2 In claim 1, the spacer is a partition-type spacer, a laminate for manufacturing a liquid crystal cell. Claim 3 In claim 2, the partition-type spacer is a laminate for manufacturing a liquid crystal cell comprising a cured product of a curable resin composition. Claim 4 delete Claim 5 In claim 1, the self-adhesive protective film is a laminate for manufacturing liquid crystal cells manufactured by co-extrusion. Claim 6 A method for manufacturing a laminate for manufacturing a liquid crystal cell, comprising: a step of forming a liquid crystal alignment layer in an area where a spacer is present on a substrate having a spacer formed on its surface; and a step of attaching an adhesive layer of a self-adhesive protective film having a structure in which a support layer and an adhesive layer are laminated, wherein the room temperature adhesion strength to a polarizer measured at a peeling speed of 300 mm / min and a peeling angle of 180 degrees is 4 gf / inch or less, and the support layer of the self-adhesive protective film has a thickness within the range of 17 μm to 30 μm and comprises a mixture of Block-PP (Poly-Propylene Block Copolymer) and high-density polyethylene (HDPE), a mixture of low-density polyethylene (LDPE) and high-density polyethylene (HDPE), or a mixture of medium-density polyethylene (MDPE) and high-density polyethylene (HDPE), and the adhesive layer of the self-adhesive protective film comprises a polyolefin-based elastomer. Claim 7 In claim 6, a method for manufacturing a laminate for manufacturing a liquid crystal cell, carried out in a roll-to-roll manner. Claim 8 delete Claim 9 delete Claim 10 delete Claim 11 delete Claim 12 delete Claim 13 delete

Images