Patterned linear polarizer and circular polarizer comprising same

Abstract

The present invention provides a circular polarizer used for preventing external light reflection, and relates to a circular polarizer comprising a patterned linear polarizing film layer, and a manufacturing method therefor. In addition, the present invention relates to: a linear polarizer comprising a patterned linear polarizing film layer and a patterned intermediate layer; a manufacturing method therefor; and a display with improved visibility, comprising the circular polarizer. Particularly, one aspect of the present invention provides a circular polarizer comprising: a patterned linear polarizing film layer; a patterned intermediate layer formed on the linear polarizing film layer; and a retardation layer formed on the intermediate layer.

Description

Patterned linear polarizer and circular polarizer including the same

[0001] The present invention relates to a circular polarizer used to prevent external light reflection, and more particularly, to a patterned linear polarizer and a circular polarizer including the same. Furthermore, the present invention relates to a novel manufacturing method for manufacturing the same.

[0002] In order to improve the visibility of electronic display devices, reflection from external light must be prevented, and various anti-reflection films are used to prevent reflection of such external light.

[0003] The most representative method among them is to use a circular polarizing film on top of the display element.

[0004] Currently used circular polarizer films consist of a thin film, iodine-doped and dyed on a stretched polyvinyl alcohol (PVA) film, covering the entire display. These circular polarizers, which include a linear polarizing film layer dyed with an iodine-doped solution, have the disadvantage of only allowing 50% of the internally emitted light to pass through, resulting in a 50% reduction in luminous efficiency.

[0005] To address these shortcomings, efforts are being made to reduce power consumption and extend battery life by adopting methods to increase the internal luminous efficiency of the display, or to lower the driving current to extend the lifespan of the display pixels.

[0006] However, none of the above attempts has attempted to improve the luminous efficiency of the entire circular polarizer and the interior of the display including it and to enhance visibility by patterning the linear polarizing film layer including the dye layer in a circular polarizer so as to prevent reflection of external light only at the necessary location in the display.

[0007] The present inventors have conducted research to solve the above problems and have found that by patterning a linear polarizing film layer to manufacture a linear polarizer having a patterned linear polarizing film layer, reflection prevention due to external light of a circular polarizer can be achieved. To this end, the linear polarizing film layer was doped over its entire area with an iodine solution containing iodine, and then exposed and developed using a lithographic method to form a pattern. However, in the case of manufacturing in this way, it was confirmed that the iodine-doped layer was difficult to dissolve, resulting in stains on the developed surface, and the resolution of the pattern during development was poor, which also acted as optical defects, and there were disadvantages such as loss of light transmittance and poor appearance.

[0008] Accordingly, as a result of further research to solve these problems, it was discovered that a linear polarizer with a pattern formed and a circular polarizer including the same can be manufactured without the need for development of a linear polarizing film layer, and a method for manufacturing a new linear polarizer and circular polarizer with a pattern formed that solves the above problems can be provided, thereby completing the present invention.

[0009] One object of the present invention is to omit the developing step for forming a pattern on a dyed (doped) linear polarizing film layer in the manufacturing method of the patent applied for by the applicant, which has been developed by the present invention, so that stains do not occur in the remaining, undissolved portion of the linear polarizing film layer that has not dissolved, thereby exhibiting excellent optical properties. In addition, a method for manufacturing a linear polarizer having further improved light transmittance and a circular polarizer including the same can be provided, and an effect of excellent visibility of the device can be achieved. In addition, by providing a display manufactured including the linear polarizer or circular polarizer without the stain, it is intended to provide a display having significantly improved visibility.

[0010] In addition, in display devices such as UDC (under device camera) and transparent OLED displays, the present invention aims to provide a novel linear polarizer having a spotless pattern that improves the overall internal luminous efficiency by preventing external light reflection only at necessary locations, a circular polarizer including the linear polarizer, and a display with improved visibility including the linear polarizer.

[0011] In addition, the present invention aims to provide a circular polarizer and a display including the same, which can improve transmittance and visibility by internal light emission by forming a patterned linear polarizer so that only the necessary portion of the circular polarizer has a linear polarization function. In addition, the present invention aims to provide a patterned linear polarizer including a patterned linear polarization film layer, a circular polarizer including the same, and a method for manufacturing the same.

[0012] In addition, one object of the present invention is to provide a patterned linear polarizer including a patterned linear polarizing film layer, which has improved transmittance and visibility by manufacturing a linear polarizer or a circular polarizer by patterning a linear polarizing film layer so that only specific patterned portions have linear polarization characteristics and circular polarization characteristics, and a circular polarizer including the same and a method for manufacturing the same.

[0013] According to one aspect of the present invention, a patterned linear polarizer and a circular polarizer including the same can increase the transmittance of light emitted from within and further improve the overall visibility of the display. Accordingly, the present invention seeks to provide a linear polarizer having a patterned linear polarizing film layer.

[0014] In addition, it is intended to provide a circular polarizer including the above patterned linear polarizing film layer.

[0015] In addition, it is intended to provide a display having significantly improved visibility by providing a display manufactured including the above circular polarizer.

[0016] In addition, in display devices such as UDC (under device camera) and transparent OLED displays, the present invention aims to provide a novel linear polarizer having a pattern formed therein that improves the overall internal luminous efficiency by preventing external light reflection only at necessary locations, a circular polarizer including the linear polarizer, and a display with improved visibility including the linear polarizer.

[0017] One aspect of the present invention for achieving the above-described task is to provide a patterned linear polarizer and a circular polarizer including the same, which do not cause optical staining, by having a step of patterning and developing before doping with a doping solution containing iodine.

[0018] More specifically, one aspect of the present invention provides a circular polarizer including a linear polarizing film layer patterned into a dyed portion and an undyed portion; a patterned intermediate layer formed on top of the undyed portion of the linear polarizing film layer; and a retardation layer formed on top of the dyed portion of the linear polarizing film layer and the patterned intermediate layer.

[0019] Another aspect of the present invention is a method for manufacturing a circular polarizer, comprising: a substrate layer; a linear polarizing film layer patterned with a dyed portion and an undyed portion formed on the substrate layer; a patterned intermediate layer formed on the undyed portion of the linear polarizing film layer; and a retardation layer formed on the dyed portion of the linear polarizing film layer and the patterned intermediate layer.

[0020] A step of forming a linear polarizing film layer by coating and orienting a lyotropic liquid crystal solution on a substrate layer;

[0021] A step of forming an intermediate layer by applying a polymer solution that can be patterned by lithography on the upper part of the linear polarizing film layer;

[0022] A step of placing a mask having a pattern formed on the upper part of the intermediate layer, curing it by irradiating it with light using a photolithography process, and developing the non-irradiated portion with a developer to form a patterned intermediate layer;

[0023] A step of dyeing a linear polarizing film layer exposed on the lower portion of the patterned intermediate layer with a doping solution to form a patterned linear polarizing film layer with a dyed portion and a non-dyed portion;

[0024] A method for manufacturing a circular polarizer including a .

[0025] Another aspect of the present invention provides a patterned linear polarizer comprising: a linear polarizing film layer patterned into a dyed portion and an undyed portion; and a patterned intermediate layer formed on top of the undyed portion of the linear polarizing film layer.

[0026] Another aspect of the present invention provides a display including a circular polarizer according to the above aspect.

[0027] A circular polarizer according to one aspect of the present invention includes a patterned linear polarizer, thereby further improving visibility and preventing reflection of external light.

[0028] In addition, the method for manufacturing a circular polarizer according to one aspect of the present invention is to pattern and develop before doping with a doping solution containing iodine, so that development is performed well in the development step, thereby improving resolution, and also, compared to the conventional technology of doping a linear polarizing film layer and then developing during development, a patterned portion without surface stains can be provided, thereby providing a circular polarizer with improved visibility.

[0029] A circular polarizer according to one aspect of the present invention can individually implement circular polarization characteristics only in a portion requiring anti-reflection in the entire display area, and since there is no need to develop the dyed linear polarizing film layer, the occurrence of stains caused by incomplete dissolution of the dyed linear polarizing film layer can be fundamentally blocked. Accordingly, the overall transmittance of internally emitted light can be improved, and the problem of optical defects caused by stains according to the prior art can be fundamentally blocked, thereby improving visibility and preventing the occurrence of defects.

[0030] The above effect can achieve a homogeneous effect in patterned linear polarizers, circular polarizers and displays including them.

[0031] In addition, since there are no optical defects and visibility is improved to be the same or better than that of conventional technologies, the internal luminous efficiency of the display can be increased and power consumption can be saved, resulting in energy savings and extended battery life.

[0032] Additionally, since visibility is improved, visibility is secured even at smaller currents, so the driving current can be reduced, which also has the effect of extending the lifespan of the display pixels.

[0033] Additionally, in new displays such as UDC (under device camera) and transparent OLED displays, preventing external light reflection only in necessary locations can improve the overall internal luminous efficiency, resulting in a significant improvement in visibility.

[0034] FIG. 1 illustrates a method for manufacturing a circular polarizer according to one embodiment of the present invention.

[0035] Figure 2 shows the optical characteristics of the linear polarizer of Example 1.

[0036] 10: Substrate layer

[0037] 20: Polarizing film layer

[0038] 21: Patterned linear polarizing film layer

[0039] 30: Middle layer

[0040] 31: Patterned middle layer

[0041] 40: Patterned mask

[0042] 200: Patterned linear polarizer

[0043] 300: Retardation layer

[0044] 1000: Circular polarizer

[0045] The present invention will be described in more detail below. However, the following specific examples or examples are merely references for explaining the present invention in detail, and the present invention is not limited thereto, and may be implemented in various forms.

[0046] Additionally, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing specific embodiments only and is not intended to be limiting.

[0047] Additionally, the singular forms used in the specification and the appended claims are intended to include the plural forms as well, unless the context clearly dictates otherwise.

[0048] Additionally, when a part is said to “include” a component, this does not mean that it excludes other components, but rather that it may include other components, unless otherwise specifically stated.

[0049] Additionally, unless otherwise specifically defined in the present invention, when a layer or member is said to be located “on” or “above” another layer or member, this includes not only cases where a layer or member is in contact with another layer or member, but also cases where another layer or another member exists between two layers or two members.

[0050] In addition, the terms “about,” “substantially,” etc. used in this specification are used in a meaning close to or at the numerical value when manufacturing and material tolerances inherent to the meanings mentioned are presented, and are used to prevent unscrupulous infringers from unfairly using the disclosure contents in which exact or absolute values ​​are mentioned to aid in the understanding of the present invention.

[0051] One aspect of the present invention provides a circular polarizer comprising: a linear polarizing film layer patterned into a dyed portion and an undyed portion; a patterned intermediate layer formed on the undyed portion of the linear polarizing film layer; and a retardation layer formed on the dyed portion of the linear polarizing film layer and the patterned intermediate layer.

[0052] In one aspect, the linear polarizing film layer may be formed by aligning a lyotropic liquid crystal polymer.

[0053] In one aspect, the intermediate layer may be developed by photolithography to form a pattern.

[0054] In one embodiment, the intermediate layer may be made of a polymer that can be developed by photolithography to form a pattern.

[0055] In one aspect, the polymer may be a polymer having a benzophenone pendant.

[0056] In one embodiment, the polymer may have a unit of the following chemical formula 1.

[0057] [Chemical Formula 1]

[0058]

[0059] In the above chemical formula 1,

[0060] R1 and R2 are each independently hydrogen or a C1 to C3 alkyl group,

[0061] R3 is any one selected from a C1 to C20 alkyl group having one or more polar groups selected from a hydroxy group, an amine group, a carboxylic acid group, a carboxylate group, a sulfonic acid group, a sulfonic acid group, and an ammonium base group; a C6 to C30 aryl group having the polar group; a C7 to C30 aralkyl group having the polar group; a C7 to C30 alkylaryl group having the polar group; a C1 to C20 alkyl group having an ether group; a C1 to C20 alkyl group having an ether group and the polar group; a C6 to C30 aryl group having an ether group and the polar group; a C7 to C30 aralkyl group having an ether group and the polar group; a C7 to C30 alkylaryl group having an ether group and the polar group;

[0062] R4 is any one functional group selected from among a substituted or unsubstituted benzophenone group; a C1 to C20 alkyl group including a substituted or unsubstituted benzophenone derivative; a C6 to C30 aryl group including a substituted or unsubstituted benzophenone derivative; a C7 to C30 aralkyl group including a substituted or unsubstituted benzophenone derivative; a C7 to C30 alkylaryl group including a substituted or unsubstituted benzophenone derivative; and a C1 to C20 alkyl group having a substituted or unsubstituted benzophenone derivative and an ether group; a C6 to C30 aryl group having a substituted or unsubstituted benzophenone derivative and an ether group; a C7 to C30 aralkyl group having a substituted or unsubstituted benzophenone derivative and an ether group; and a C7 to C30 alkylaryl group having a substituted or unsubstituted benzophenone derivative and an ether group.

[0063] m and n are in a molar ratio of 0.001 to 0.999:0.999:0.001.

[0064] In one aspect, the polarizing film layer may be formed on a substrate layer.

[0065] In one aspect, the substrate layer may be a silicon substrate, a polymer film, an OLED panel, or a glass substrate.

[0066] In one aspect, the retardation layer may be one or more retardation layers selected from a half wave plate (HWP) layer and a quarter wave plate (QWP) layer.

[0067] In one aspect, an adhesive layer may be further formed between at least one of the layers of the circular polarizer.

[0068] In one aspect, the adhesive layer may be a deposition layer in which hexaalkyldisilazane is deposited.

[0069] Another aspect of the present invention is a method for manufacturing a circular polarizer, comprising: a substrate layer; a linear polarizing film layer patterned with a dyed portion and an undyed portion formed on the substrate layer; a patterned intermediate layer formed on the undyed portion of the linear polarizing film layer; and a retardation layer formed on the dyed portion of the linear polarizing film layer and the patterned intermediate layer.

[0070] A step of forming a linear polarizing film layer by coating and orienting a lyotropic liquid crystal solution on a substrate layer;

[0071] A step of forming an intermediate layer by applying a polymer solution that can be patterned by lithography on the upper part of the linear polarizing film layer;

[0072] A step of placing a mask having a pattern formed on the upper part of the intermediate layer, curing it by irradiating it with light using a photolithography process, and developing the non-irradiated portion with a developer to form a patterned intermediate layer;

[0073] A step of dyeing a linear polarizing film layer exposed on the lower portion of the patterned intermediate layer with a doping solution to form a patterned linear polarizing film layer with a dyed portion and a non-dyed portion;

[0074] A method for manufacturing a circular polarizer including a .

[0075] In one embodiment, the method may further include forming a retardation layer on top of the patterned linear polarizing film layer and the patterned intermediate layer.

[0076] In one aspect, the retardation layer may include one or two types selected from HWP (1 / 2 wave plate) and QWP (1 / 4 wave plate).

[0077] In one aspect, the method may further include a step of forming an adhesive layer between one or more layers among the substrate layer, the patterned linear polarizing film layer, the patterned intermediate layer, and the retard layer.

[0078] In one aspect, the adhesive layer may be a deposition layer in which hexaalkyldisilazane is deposited.

[0079] Another aspect of the present invention provides a patterned linear polarizer comprising: a linear polarizing film layer patterned into a dyed portion and an undyed portion; and a patterned intermediate layer formed on top of the undyed portion of the linear polarizing film layer.

[0080] In one aspect, the linear polarizing film layer may be manufactured by orienting a lyotropic liquid crystal material.

[0081] In one embodiment, the patterned intermediate layer may be manufactured using a polymer that can be developed by photolithography to form a pattern.

[0082] In one aspect, the polymer may be a polymer having a benzophenone pendant.

[0083] In one embodiment, the polymer may have a unit represented by the following chemical formula 1.

[0084] [Chemical Formula 1]

[0085]

[0086] In the above chemical formula 1,

[0087] R1 and R2 are each independently hydrogen or a C1 to C3 alkyl group,

[0088] R3 is any one selected from a C1 to C20 alkyl group having one or more polar groups selected from a hydroxy group, an amine group, a carboxylic acid group, a carboxylate group, a sulfonic acid group, a sulfonic acid group, and an ammonium base group; a C6 to C30 aryl group having the polar group; a C7 to C30 aralkyl group having the polar group; a C7 to C30 alkylaryl group having the polar group; a C1 to C20 alkyl group having an ether group; a C1 to C20 alkyl group having an ether group and the polar group; a C6 to C30 aryl group having an ether group and the polar group; a C7 to C30 aralkyl group having an ether group and the polar group; a C7 to C30 alkylaryl group having an ether group and the polar group;

[0089] R4 is any one functional group selected from among a substituted or unsubstituted benzophenone group; a C1 to C20 alkyl group including a substituted or unsubstituted benzophenone derivative; a C6 to C30 aryl group including a substituted or unsubstituted benzophenone derivative; a C7 to C30 aralkyl group including a substituted or unsubstituted benzophenone derivative; a C7 to C30 alkylaryl group including a substituted or unsubstituted benzophenone derivative; and a C1 to C20 alkyl group having a substituted or unsubstituted benzophenone derivative and an ether group; a C6 to C30 aryl group having a substituted or unsubstituted benzophenone derivative and an ether group; a C7 to C30 aralkyl group having a substituted or unsubstituted benzophenone derivative and an ether group; and a C7 to C30 alkylaryl group having a substituted or unsubstituted benzophenone derivative and an ether group.

[0090] m and n are in a molar ratio of 0.001 to 0.999:0.999:0.001.

[0091] In one embodiment, the patterned polarizing film layer may be formed on top of any one of the substrate layers selected from a silicon substrate, a polymer film, an OLED panel, or a glass substrate.

[0092] Another aspect of the present invention provides a display having improved visibility, including a patterned linear polarizing film layer, a patterned linear polarizer, or the circular polarizer according to the above aspect. Next, a patterned mask (40) is used, and a lithography process such as photolithography is performed to develop an intermediate layer by utilizing the difference in solubility between a cured or decomposed portion and a non-cured or non-decomposed portion, thereby forming a patterned intermediate layer (31).

[0093]

[0094] An embodiment of the present invention is described below using the drawings.

[0095] Figure 1 illustrates one embodiment of a manufacturing method for manufacturing a circular polarizer of the present invention.

[0096] As illustrated in FIG. 1, first, a lithographic liquid crystal polymer composition is applied and oriented on a substrate layer (10), such as a glass substrate, an OLED panel, a polymer film, and a silicon substrate, to form a linear polarizing film layer (20). A solution comprising a polymer that can be developed by photolithography to form a pattern, i.e., a solution containing a photocurable or photodegradable polymer, is applied to the upper surface of the linear polarizing film layer (20), and then dried to form an intermediate layer (30). Next, a patterned mask (40), etc. is used to develop the intermediate layer by utilizing the difference in solubility between the cured or decomposed portion and the non-cured or non-decomposed portion through a lithography process, such as photolithography, to form a patterned intermediate layer (31). The lithography process can be patterned using a negative lithography process or a positive lithography process, and is therefore not limited thereto.

[0097] The linear polarizing film layer (20) exposed on the lower portion of the patterned intermediate layer (31) is dyed with a doping solution to form a linear polarizing film layer (21) patterned into a dyed portion and a non-dyed portion. At this time, the portion where the patterned intermediate layer is formed is not directly contacted by the doping solution, so a non-dyed portion is formed, and the portion where the intermediate layer is not formed is doped with the doping solution to form a dyed portion. That is, in the present invention, a state in which the linear polarizing film layer (21) patterned into a dyed portion and a non-dyed portion and the patterned intermediate layer (31) formed on the upper portion of the non-dyed portion of the patterned linear polarizing film layer are laminated is referred to as a patterned linear polarizer (200). Next, a circular polarizer (1000) may be manufactured by including a step of forming a retardation layer (300) including one or two selected from a QWP (Quater Wave Plate) or an HWP (Half Wave Plate) on the dyed portion of the patterned linear polarizing film layer (21) and the patterned intermediate layer (31).

[0098] A circular polarizer manufactured by a manufacturing method according to one aspect of the present invention can provide a manufacturing method with a higher resolution than a case where a lithography process is performed after doping by first forming an intermediate layer in which a pattern is formed through a lithography process when manufacturing a patterned linear polarizer, and then manufacturing a linear polarizing film in which a pattern is formed by dyed and non-dyed portions through doping.

[0099] That is, when a lithography process is performed after doping, there is a problem that the dyed portion has low solubility and is not completely developed, and the light transmittance is reduced or optical defects occur due to stains remaining due to incomplete development in the linear polarizing film layer. This requires a long development time, and in this case, even the portion coated by the intermediate layer that should not be developed is developed, which also causes a problem of undesirable unevenness of the developing interface, and this occurrence causes optical defects due to the collapse of the intermediate layer formed on top.

[0100] In order to solve the above problem, the present invention provides a patterned linear polarizing film layer divided into a dyed portion and a non-dyeed portion, as shown in Fig. 1, thereby providing a new manufacturing method that solves the above problem and a linear polarizer and a circular polarizer obtained therefrom.

[0101] When manufactured using the manufacturing method of the present invention, since the dyeing of the linear polarizing film layer is partially dyed after the developing step of the intermediate layer, a developing step of the linear polarizing film layer is not necessary, and since no defects or stains occur due to incomplete dissolution during the developing step, there is an effect of improving the occurrence of reduced light transmittance or optical defects.

[0102] In addition, although not shown in FIG. 1, a step of forming an adhesive layer between each manufacturing step may be further included. That is, in one embodiment, an adhesive layer may be further included between any one or more selected from among the substrate layer and the linear polarizing film layer, the linear polarizing film layer and the intermediate layer, the intermediate layer and the retardation layer, and the QWP (Quater Wave Plate) retardation layer and the HWP (Half Wave Plate) retardation layer. In one embodiment, the adhesive layer may be formed by depositing hexaalkyldisilazane, and by way of non-limiting example, hexamethyldisilazane.

[0103] In this way, a circular polarizer (1000) according to one aspect of the present invention can be manufactured by laminating a linear polarizing film layer (21) patterned into dyed and non-dyed portions formed on the upper surface of a substrate layer (10) by a lithography process, a patterned intermediate layer (31) formed on the upper surface of the non-dyed portion of the linear polarizing film layer, and forming a retardation layer (300) on the upper surface thereof as shown in FIG. 1. Accordingly, the patterned dyed linear polarizing film layer can improve transmittance due to internal light emission and enhance visibility.

[0104] In one embodiment, the above-described layers may be laminated adjacent to each other, or may be laminated with another functional layer, such as an adhesive layer, interposed between each layer, and thus are not limited thereto. The adhesive layer may be a deposited layer in which hexaalkyldisilazane is deposited. The hexaalkyldisilazane may be hexamethyldisilazane, but is not limited thereto.

[0105] A circular polarizer manufactured by a manufacturing method according to one aspect of the present invention can form a linear polarizing film layer partially dyed only in a specific target area and a patterned intermediate layer, thereby providing a display with improved visibility.

[0106] In one aspect, the step of forming the linear polarizing film layer may be performed by applying a solution containing a lyotropic liquid crystal substance, or by orienting it by applying shear in a certain direction or by scrubbing, but is not limited thereto.

[0107] In one aspect, the retardation layer may be a laminated layer including one or two types selected from HWP (1 / 2 wave plate) and QWP (1 / 4 wave plate).

[0108] In one embodiment, the developing solvent used in the above phenomenon is not particularly limited as long as it is a solvent that can form a pattern by dissolving either the irradiated portion or the non-irradiated portion, or a solvent that can dissolve the non-irradiated portion of the irradiated intermediate layer. In addition, it is not particularly limited as long as it dissolves the intermediate layer without dissolving the linear polarizing film layer. For example, the solvent may be an ether solvent, an ester solvent, an amine solvent, a hydrocarbon solvent, water, an alkaline solvent, a base solvent, an acidic solvent, or a mixture thereof. Since this can be appropriately selected depending on the difference in solubility between the intermediate layer and the linear polarizing film layer, it is not limited thereto.

[0109]

[0110] Below, each component of the present invention is described.

[0111] First, the linear polarizing film layer will be described. The linear polarizing film layer is formed by applying and aligning a solution containing a lyotropic liquid crystal substance onto a substrate layer. The lyotropic liquid crystal substance is one commonly known to be used in the relevant field, and any lyotropic liquid crystal compound or lyotropic liquid crystal polymer can be used without particular limitation in the present invention.

[0112] The above-mentioned lyotropic liquid crystal material is a material that has lyotropic liquid crystal properties at a specific concentration in water or an organic solvent, and can be used to obtain a polymer thin film with a highly aligned structure, mainly through bar coating or slit die coating. Therefore, any compound that can obtain a unique, very large birefringence due to the alignment of liquid crystal bundles is not limited thereto.

[0113] In one embodiment, when the liquid crystal material is a polymer, the molecular weight of the polymer is not particularly limited, but for example, the weight average molecular weight may be 10 to 2 million g / mol, 10,000 to 200,000 g / mol, 20,000 to 180,000 g / mol, 30,000 to 150,000 g / mol, 50,000 to 130,000 g / mol, 80,000 to 120,000 g / mol, and values ​​between these values, but this is not limited as long as it exhibits the linear polarization characteristics of the present invention.

[0114] In one aspect, a water-soluble liquid crystal polymer may be preferred due to the simplicity of the process and ease of development, but is not limited thereto.

[0115] In one embodiment, the linear polarizing film layer may be manufactured from a liquid crystal compound having lyotropic properties or a lyotropic liquid crystal polymer solution, and after coating the coating solution, bar or slit coating is performed in a specific direction to orient the film by applying shear in the coating direction, thereby forming a transparent film layer having a large birefringence in a specific direction, thereby manufacturing the linear polarizing film layer.

[0116] Thereafter, in order to manufacture a patterned polarizing film layer, as shown in Fig. 1, an intermediate layer capable of forming a pattern is coated, and a pattern is formed and developed through a photolithography process using a patterned photomask or a corresponding mask on the intermediate layer.

[0117] The above developing step is to develop one of the photocrosslinked or photodegraded regions using a developer to produce a patterned intermediate layer, and can be developed using a solvent or mixed solvent that does not dissolve or damage the lower linear polarizing film layer.

[0118] In addition, if a liquid crystal polymer film (linear polarizing film layer) oriented in the specific direction is doped with a doping solution such as a dyeing solution consisting of iodine molecules and KI, a linear polarizing film layer with a dyed pattern formed by significantly improving the linear polarization characteristics dyed with the doping solution can be manufactured. In other words, a pattern can be formed by dyeing in a portion where the patterned intermediate layer is not formed.

[0119] The thickness of the above-mentioned linear polarizing film layer is not particularly limited. For example, it may be 5000 nm or less, 1000 nm or less, 500 nm or less, or 100 nm or less, and specifically, for example, it may be 10 to 5000 nm, 50 to 3000 nm, or 100 to 1000 nm. If it is patterned with a desired pattern size, it is more preferred because it can produce a wider range of applications and various displays, but is not limited thereto.

[0120] The following describes the middle layer.

[0121] The intermediate layer may be a polymer or a single molecule that can be photocured or photodegraded by photolithography, or a material for photolithography, but a polymer that can be photocured or photodegraded is more preferred in terms of preventing migration from the device.

[0122] Among these polymers, polymers that are soluble in organic solvents are preferred because they do not cause damage to the water-soluble polarizing film layer during development, do not cause environmental pollution, and can be developed in a simple process, but are not limited thereto.

[0123] Furthermore, the intermediate layer must have good resolution, excellent coating properties, and excellent adhesiveness, as it must be well-patterned. Furthermore, the underlying linear polarizing film layer must not be damaged by infiltration or dissolution. This is crucial, as damage to the underlying linear polarizing film layer can significantly reduce the transparency of the polarizing film.

[0124] The thickness of the above intermediate layer is not particularly limited. For example, it may be 5000 nm or less, 1000 nm or less, 500 nm or less, or 100 nm or less by a photolithography process, and for example, it may be 10 to 5000 nm, 50 to 3000 nm, or 100 to 1000 nm. If it is patterned with a desired pattern size, it is more preferred because it can manufacture a wider range of displays in its application, but is not limited thereto.

[0125] Since the patterned intermediate layer constitutes a part of the entire polarizing film, it is desirable to have a structure in which the polymer itself is cured without impurities or unreacted substances during the ultraviolet (UV) irradiation process, and in addition, a phototropic liquid crystal material having HWP characteristics, especially a lyotropic liquid crystal polymer, must be coated on top of the intermediate layer, so that it has an appropriate contact angle for adhesion and coating.

[0126] As an example of such an implementation of a material, when forming a linear polarizing film layer with a hydrophilic thin film, a polarity having an appropriate contact angle may be required in order to be applied as a thin film on the linear polarizing film layer, which is a hydrophilic thin film.

[0127] In one embodiment, the intermediate layer having the above characteristics may be, but is not particularly limited to, a polar polymer solution having benzophenone pendants coated and a pattern formed using a photolithography method. When the benzophenone pendants are present, they have the advantage of easily generating radicals and being cured by light irradiation, and are thus more preferred due to energy savings and ease of process, but are not limited thereto. For example, when a polymer such as the following chemical formula 1 is used, it is surprisingly found that all of the above characteristics are satisfied, and thus this is more preferred as an intermediate layer in the present invention.

[0128] The above benzophenone group is formed by a radical from a carbonyl group by light irradiation, and forms a second radical of the polymer main chain or side chain. nd or 3 rd It is believed that it is hardened with hydrogen, so the difference in solubility can easily occur due to hardening, and the pattern formation property can be very good.

[0129] In one embodiment, the polymer of the following chemical formula 1 is preferred because it has excellent pattern resolution, high adhesive affinity with the linear polarizing film layer, and does not damage the material of the linear polarizing film layer, but is not limited thereto as described above.

[0130] [Chemical Formula 1]

[0131]

[0132] In the above chemical formula 1,

[0133] R1 and R2 are each independently hydrogen or a C1 to C3 alkyl group,

[0134] R3 is any one selected from a C1 to C20 alkyl group having one or more polar groups selected from a hydroxy group, an amine group, a carboxylic acid group, a carboxylate group, a sulfonic acid group, a sulfonic acid group, and an ammonium base group; a C6 to C30 aryl group having the polar group; a C7 to C30 aralkyl group having the polar group; a C7 to C30 alkylaryl group having the polar group; a C1 to C20 alkyl group having an ether group; a C1 to C20 alkyl group having an ether group and the polar group; a C6 to C30 aryl group having an ether group and the polar group; a C7 to C30 aralkyl group having an ether group and the polar group; a C7 to C30 alkylaryl group having an ether group and the polar group;

[0135] R4 is any one functional group selected from among a substituted or unsubstituted benzophenone group; a C1 to C20 alkyl group including a substituted or unsubstituted benzophenone derivative; a C6 to C30 aryl group including a substituted or unsubstituted benzophenone derivative; a C7 to C30 aralkyl group including a substituted or unsubstituted benzophenone derivative; a C7 to C30 alkylaryl group including a substituted or unsubstituted benzophenone derivative; and a C1 to C20 alkyl group having a substituted or unsubstituted benzophenone derivative and an ether group; a C6 to C30 aryl group having a substituted or unsubstituted benzophenone derivative and an ether group; a C7 to C30 aralkyl group having a substituted or unsubstituted benzophenone derivative and an ether group; and a C7 to C30 alkylaryl group having a substituted or unsubstituted benzophenone derivative and an ether group.

[0136] m and n are in a molar ratio of 0.001 to 0.999:0.999:0.001.

[0137] The above alkyl refers to an alkyl group that is a functional group or side chain consisting of carbon and hydrogen atoms and has only a single bond. The alkyl group may be straight or branched.

[0138] The above arylalkyl refers to an arylalkyl group which is an alkyl group in which one or more hydrogen atoms are replaced by an aryl group.

[0139] The above alkylaryl refers to an aryl group in which one or more hydrogen atoms are replaced with an alkyl group.

[0140] The above aryl refers to an aryl group which is a functional group or side chain derived from an aromatic ring.

[0141] More specifically, in the above chemical formula 1, R1 and R2 are each independently hydrogen or a C1 to C3 alkyl group, R3 is any one selected from a C1 to C20 alkyl group having an ether group; a C1 to C20 alkyl group having one or more polar groups selected from an ether group and a hydroxy group, an amine group, a carboxylic acid group, a carboxylate group, a sulfonic acid group, a sulfonic acid group, and an ammonium salt group; R4 is a substituted or unsubstituted benzophenone group; and m and n are in a molar ratio of 0.001 to 0.999:0.999:0.001.

[0142] In one embodiment, the polymer having the benzophenone pendant may have a weight average molecular weight of 10 million to 3 million g / mol, 10 million to 3 million g / mol, 10 million to 100,000 g / mol, and more specifically 30 million to 50,000 g / mol. The weight average molecular weight can be measured by a method well known in the art, and is, for example, a polystyrene equivalent molecular weight analyzed by GPC (gel permeation chromatography).

[0143] In one aspect, the polymer forming the intermediate layer may be a polymer of the following chemical formula 2.

[0144] [Chemical Formula 2]

[0145]

[0146] In the above chemical formula 2, m and n are in a molar ratio of 0.001 to 0.999:0.999:0.001.

[0147] In a more specific embodiment, the molar ratio of m and n may be 0.7 to 0.5: 0.3 to 0.5, but is not limited thereto.

[0148] The above polymer is a material having an appropriate contact angle of polarity due to the hydroxy ethyl group, and is well coated on a thin film of a linearly polarizing film, which is a water-soluble polar polymer. In addition, when irradiated with UV, benzophenone absorbs UV, forming radicals, which undergo a photocrosslinking reaction with the lower polymer or intermediate polymer, and the benzophenone itself changes into a polar polymer as the carbonyl group of the phenone changes into a hydroxyl group. This molecular structure is preferred because the photocrosslinking reaction occurs only through its own light absorption without any photocuring additive for UV curing, forming a network structure between polymers, and forming a thin film that is insoluble in all solvents.

[0149] When the polymer is used as an intermediate layer, the weight average molecular weight is not limited as long as it can be dissolved in a solvent to prepare an intermediate coating solution, but it can preferably be 10 to 3 million g / mol, and the molar ratio of each unit can be suitably selected from 0.01 to 0.99:0.99:1, so there is no particular limitation thereon.

[0150] In one embodiment, the polymer forming the intermediate layer may be a polymer of the following chemical formula 3.

[0151] [Chemical Formula 3]

[0152]

[0153] In the above chemical formula 3, m and n are in a molar ratio of 0.001 to 0.999:0.999:0.001.

[0154] In a more specific embodiment, the molar ratio of m and n may be 0.7 to 0.5: 0.3 to 0.5, but is not limited thereto.

[0155] In one aspect of the present invention, the retardation layer may be formed by laminating a Quarter Wave Plate or a Half Wave Plate on top of a patterned linear polarizing layer and a patterned intermediate layer, as illustrated in FIG. 1. By coating a retardation layer such as a Quarter Wave Plate or a Half Wave Plate on top of a patterned linear polarizing film layer and a patterned intermediate layer, a patterned circular polarizing film and a display including the same can be provided.

[0156] Since the method for laminating such a retardation layer can be manufactured by adjusting the optical phase difference of the above-mentioned lyotropic liquid crystal material with respect to the optical axis of the above-mentioned linear polarizing film layer, the manufacturing method thereof is not limited to a method commonly used in the relevant field, and reference can be made to the embodiments of the present invention, and thus is not described further.

[0157] Additionally, it may be a circular polarizing film in which an optical adhesive film is laminated on top of one or more retardation films selected from the above HWP or QWP.

[0158]

[0159] Hereinafter, the configuration and effects of the present invention will be described in more detail with specific examples and comparative examples, but these examples are only intended to make the present invention more clearly understood and are not intended to limit the scope of the present invention.

[0160]

[0161] [Method of measuring physical properties]

[0162] 1) Weight average molecular weight (g / mol) and dispersity

[0163] The weight average molecular weight and dispersion of the lyotropic liquid crystal polymer were measured as follows. The measurements were made by gel permeation chromatography (GPC) calibrated with sodium polystyrene sulfonate standards in 50 mL of LiCl buffer (water:acetonitrile = 6:4, 40°C, flow rate 1.0 mL / min).

[0164] The intermediate polymer was measured by gel permeation chromatography (GPC) calibrated with polystyrene standards in 1% THF (35 °C, flow rate 1.2 mL / min).

[0165] 2) Thickness

[0166] The thickness of the film was measured using NanoView (NV-2000, Nanosystem Co., Ltd.), which measures the thickness of thin films in nanometers using white light interferometry.

[0167] 3) Visible light transmittance (%)

[0168] The visible light transmittance of the film was measured using a visible light spectrophotometer (UV-2600, Shimadzu Corporation) and a single linear polarizer. T single is the visible light transmittance measured on the coated film without an additional linear polarizer, and T / and T ⊥ It is measured by making the transmission axis of the added polarizer parallel or perpendicular to the transmission axis of the coated polarizing film.

[0169] [Manufacturing Example 1] Intermediate Layer Polymer Synthesis

[0170]

[0171] The reaction equipment was configured with a 250 mL three-necked flask, a stirrer for heating and temperature control, a thermometer, and a nitrogen purge inlet. The reaction was carried out by adding hydroxyethyl acrylate and benzophenyl methacrylate in a molar ratio of 0.7:0.3 in a DMF (dimethylformamide) solvent at 30 wt%. AIBN, the initiator, was added at 1 mol% based on the total monomers, and the reaction was terminated after 26 hours at 75°C, followed by precipitation in diethyl ether to obtain a polymer. The manufactured polymer had a weight-average molecular weight of 37,400 g / mol and a polydispersity of 2.4.

[0172] [Manufacturing Example 2] Intermediate Layer Polymer Synthesis

[0173]

[0174] The same procedure was followed as in Example 1, except that 2-(2-ethoxyethoxy)ethyl acrylate was used instead of 2-ethyl methacrylate.

[0175] As a result, an intermediate polymer having a mean molecular weight of 41,000 g / mol and a polydispersity of 2.2 was synthesized.

[0176] [Manufacturing Example 3] Manufacturing of Lyotropic Liquid Crystal Polymer

[0177] 1) Preparation of compound 1

[0178]

[0179] 4-Bromobutanol (5.0 g, 33 mmol) and pyridine (50 ml) were added to a reaction vessel, dissolved, and stirred at 0°C under an inert nitrogen gas atmosphere. 6.8 g (36 mmol) of tosyl chloride was added thereto, and the mixture was stirred for 60 minutes to obtain a reaction mixture. The reaction mixture was poured into ice water, and extracted twice with ethyl ether (500 ml). The extracted organic layer was washed with a 6 N aqueous hydrogen chloride solution, dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure to obtain compound 1 (4-bromobutyl 4-methylbenzenesulfonate, 90% yield) as an oily liquid product.

[0180] 2) Preparation of compound 2

[0181]

[0182] Compound 1 (7.45 g, 25 mmol) obtained above was dissolved in 60 ml of ethanol, and then 4-methoxyphenol (3.0 g, 24 mmol) and K2CO3 (3.32 g, 24 mmol) were added to prepare a homogeneous reaction mixture, which was reacted for 3 hours under nitrogen gas atmosphere reflux conditions (65 °C). After the reaction, the mixture was filtered to remove the solid content, and the ethanol was evaporated to obtain an unpurified solid mixture. The solid mixture was recrystallized twice from a chloroform solution to obtain purified compound 2 in a yield of 60% or more.

[0183] 3) Preparation of monomer (compound 3)

[0184]

[0185] 4 g (15.5 mmol) of the compound 2 (1-(4-bromobutoxy)-4-methoxybenzene) obtained above, 6.0 g (200 mmol) of paraformaldehyde, 40 ml of HBr (33% in acetic acid), and 40 ml of glacial acetic acid were placed in a reaction vessel and mixed uniformly at room temperature. The mixed solution was reacted for 18 hours with stirring at 60 °C under a nitrogen gas atmosphere. After the reactant was cooled to room temperature, it was poured into a separatory funnel containing a saturated aqueous solution of NaHCO3 and extracted with chloroform. After separating the organic chloroform layer, the moisture was removed using anhydrous magnesium sulfate and filtered. The chloroform was evaporated to obtain a solid compound, which was recrystallized from a mixed solvent of chloroform / hexane (10:90) to obtain compound 3 in a 94% yield.

[0186] 4) Preparation of solution-type liquid crystal polymer P1

[0187]

[0188] In a reaction vessel, 30 ml of dimethylformamide (DMF) was placed, and 3.0 g of monomer (compound 3), 2.42 g of sodium bromide (NaBr), 75 mg of copper chloride (CuCl2), and 6.0 ml of n-amyl alcohol were added under a nitrogen gas atmosphere, and the mixture was stirred at room temperature to prepare a reaction mixture. Separately, 9.15 g of sodium borohydride (NaBH4) was dissolved in 8.0 ml of distilled water to prepare a hydrated NaBH4 solution. The prepared NaBH4 aqueous solution was added dropwise to the reaction mixture while stirring, and the monomer polymerization reaction was performed for 1 hour. Thereafter, the nitrogen gas was separated from the reaction vessel, and the mixture solution was stirred for 20 hours while bubbling with room air. The reaction mixture was filtered to remove the solid content, and a mixture of methanol / distilled water (80:20 weight ratio) was added to the filtered liquid to obtain a precipitated solution-type polymer P1. The obtained solution-type polymer P1 had a weight average molecular weight of 80,000 g / mol and a polydispersity of 2.5.

[0189] 5) Preparation of solution-type liquid crystal polymer P2

[0190]

[0191] The obtained P1 (2.0 g) was placed in a reaction vessel, and 20 ml of DMF was added to prepare a homogeneous solution. Then, a separately prepared sodium sulfite (Na2CO3) aqueous solution (1 g / 20 ml) was added to the reaction vessel and stirred at room temperature. The reaction mixture was gradually heated and stirred for 24 hours under reflux conditions of 120 °C. After 20 ml of distilled water was added, the mixture was heated and stirred for 12 hours, and then 20 ml of distilled water was added and heated and stirred for 12 hours. After the reaction vessel was cooled to room temperature, the reaction mixture was filtered to remove the solid content, and the filtered liquid was placed in a dialysis tube (cutoff molecular weight 10,000 daltons) and dialyzed for 3 days while exchanging distilled water. The dialyzed solution was heated to concentrate, poured into an excess of cold acetone to obtain a polymer precipitate, and dried in a vacuum oven to obtain a solution-type liquid crystal polymer P2.

[0192] 6) Preparation of lyotropic liquid crystal polymer solution

[0193] The polymer P2 (0.5 g) obtained above was dissolved in distilled water (15 g) to prepare a uniform solution, and the distilled water was evaporated to make a solution of 5.0 g to prepare a 10% weight ratio polymer solution (liquid crystal composition 2). As a result of observing the prepared solution under a polarizing microscope, it was confirmed that a uniform liquid crystal phase was exhibited in the solution phase.

[0194] [Manufacturing Example 4]

[0195] In the above Manufacturing Example 1, polymerization was performed in the same manner as in Manufacturing Example 1, except that hydroxyethyl acrylate and benzophenyl methacrylate were used in a molar ratio of 0.5:0.5. The manufactured polymer had a weight average molecular weight of 31,600 g / mol and a polydispersity of 2.6.

[0196] [Example 1]

[0197] 1) Manufacturing of patterned linear polarizers

[0198] The lyotropic liquid crystal polymer solution prepared in the above Manufacturing Example 3 was bar-coated on a glass substrate and dried in an oven at 60°C to produce a transparent optical film (linear polarizing film layer) having a thickness of 800 nm and uniaxially oriented.

[0199] A polymer solution containing 10 wt% of the polymer of the above Manufacturing Example 1 and 90 wt% of propylene glycol monomethyl ether was prepared, coated on the upper part of the linear polarizing film layer, and dried at 60° C. for 30 seconds to form an intermediate layer having a thickness of 120 nm.

[0200] Next, a mask with a uniform pattern corresponding to about 30 area% is laminated on the upper part of the intermediate layer, and then cured with a UV curing device (high pressure mercury lamp) at I-line 365 nm & G-line 435 nm, 8 mW / cm 2 , and crosslinked by exposure for 30 seconds. After removing the mask, the unexposed portion was first developed with cyclopentanone for 60 seconds to form a patterned intermediate layer.

[0201] Next, 30 g of potassium iodide (KI) and 3 g of iodine (I2) were added to 300 g of distilled water. And by immersing in a dyeing solution prepared by adding 30 g of aluminum chloride (AlCl3) for 30 seconds to perform iodine dyeing, the film was dried at 60°C for 3 minutes to form a linear polarizing film layer in which the exposed portion by the non-exposed and developed portion of the intermediate layer was dyed.

[0202] In the above dyeing step, when immersed in a dyeing solution for 30 seconds, the transparent optical film is exposed only in the developed portion, and iodine dyeing is performed on this portion. Afterwards, the non-dyeing film surface is washed by rinsing with an excessive amount of ethanol (98%), and dried to manufacture a patterned polarizing film layer with dyed and non-dyeing portions.

[0203] In addition, it can be seen that the patterned linear polarizer manufactured in this way shows a characteristic of blocking light when the direction of the bar coating (SD) and the direction of the polarizer (P) are perpendicular (⊥), as shown in Fig. 2 below, and shows a linear polarization characteristic of transmitting light when the directions of SD and P are horizontal (∥).

[0204] The linear polarizer patterned with the dyed and undyed portions, i.e., the linear polarizer which is a laminate of a glass substrate, a patterned linear polarizing film layer, and a patterned intermediate layer, had a light transmittance of 87%. This is more than double the transmittance of 41% in Comparative Example 1 below, in which the entire area of ​​the linear polarizer had a dyed linear polarizing film layer. In addition, it was confirmed that the linear polarizer had no optical defects such as stains or flaws.

[0205] 2) Manufacturing of a circular polarizer for a single-film retarder

[0206] The patterned intermediate layer and dyed linear polarizing film layer of the linear polarizer manufactured above were coated with the lyotropic liquid crystal polymer solution manufactured in Manufacturing Example 3 to give a 45° phase difference with respect to the optical axis of the linear polarizer, and dried at 60°C for 3 minutes to form a phase retardation film thin film having a thickness of 800 nm and a Quater-Wave Plate (QWP) birefringence, thereby manufacturing a circular polarizer. It was confirmed that the circular polarizer had no optical defects due to stains or flaws.

[0207] [Example 2]

[0208] 1) Manufacturing of circular polarizer for wide band retarder [HWP (QWP / COP-HB / QWP) / intermediate layer / QWP]

[0209] The lyotropic liquid crystal polymer solution manufactured in Manufacturing Example 3 was coated on a patterned linear polarizer manufactured in the same manner as in Example 1 with a 15° phase difference aligned with the optical axis of the patterned linear polarizer, and then dried at 60°C for 3 minutes to form a Half-Wave Plate (HWP) having a 15° phase difference. Thereafter, an intermediate layer was formed on the HWP again in the same manner as described above, and the lyotropic liquid crystal polymer solution manufactured in Manufacturing Example 3 was coated so as to have a 75° phase difference with respect to the optical axis of the patterned linear polarizer, and then dried at 60°C for 3 minutes to form a circular polarizer having a QWP thin film.

[0210] It was confirmed that the above circular polarizer had no optical properties at all due to staining.

[0211] [Example 3]

[0212] In the above Example 1, a patterned linear polarizer and a circular polarizer were manufactured in the same manner as in Example 1, except that the polymer of Preparation Example 2 was used instead of the polymer of Preparation Example 1. As a result, it was found that the light transmittance increased by almost twice as much as that of the circular polarizer having a fully dyed circular polarizing film layer.

[0213] [Example 4]

[0214] In the above Example 1, a patterned linear polarizer and a circular polarizer were manufactured in the same manner as in Example 1, except that the polymer of Preparation Example 4 was used instead of the polymer of Preparation Example 1. As a result, it was found that the light transmittance increased by almost twice as much as that of the circular polarizer having a fully dyed circular polarizing film layer.

[0215] [Comparative Example 1]

[0216] 1) Manufacturing of patterned linear polarizers

[0217] The lyotropic liquid crystal polymer solution prepared in the above Manufacturing Example 3 was bar-coated on a glass substrate and dried in an oven at 60°C to produce a transparent optical film (linear polarizing film layer) having a thickness of 800 nm and uniaxially oriented.

[0218] Next, 30 g of potassium iodide (KI) and 3 grams of iodine (I2) were added to 300 g of distilled water. After immersing the film in a dyeing solution prepared by adding 30 g of aluminum chloride (AlCl3) for 30 seconds to perform iodine dyeing, it was dried at 60°C for 3 minutes to form a fully dyed linear polarizing film layer.

[0219] A polymer solution containing 10 wt% of the polymer of the above Preparation Example 1 and 90 wt% of propylene glycol monomethyl ether was prepared and coated on the dyed (doped) linear polarizing film layer, and after coating, dried at 60°C for 30 seconds to form an intermediate layer having a thickness of 120 nm. The light transmittance of the laminate formed with the glass substrate, the entire dyed linear polarizing film layer, and the intermediate layer was 41%.

[0220] Next, a mask with a uniform pattern corresponding to about 30% of the area was laminated on the upper part of the intermediate layer, and then cured with a UV curing device (high pressure mercury lamp) at I-line 365 nm & G-line 435 nm, 8 mW / cm 2 , and crosslinked by exposure for 30 seconds. After removing the mask, the unexposed portion was first developed with cyclopentanone for 60 seconds to form a patterned intermediate layer, and the exposed dye layer in the dissolved portion of the patterned intermediate layer was secondarily developed using a water-soluble solvent to form a patterned linear polarizing film layer, thereby manufacturing a patterned linear polarizer.

[0221] The light transmittance of the above patterned linear polarizer, i.e., the linear polarizer which is a laminate of a glass substrate, a patterned linear polarizing film layer, and a patterned intermediate layer, was 85%. In addition, it was confirmed that the developed surface remained unstained.

[0222] As described above, the present invention has been described with specific details and limited examples and drawings, but these are provided only to help a more general understanding of the present invention, and the present invention is not limited to the above examples, and those skilled in the art to which the present invention pertains can make various modifications and variations based on this description.

[0223] Therefore, the idea of ​​the present invention should not be limited to the described embodiments, and all things that are equivalent or equivalent to the following claims as well as the claims are considered to fall within the scope of the idea of ​​the present invention.

Claims

1. A circular polarizer comprising: a linear polarizing film layer patterned into a dyed portion and an undyed portion; a patterned intermediate layer formed on top of the undyed portion of the linear polarizing film layer; and a retardation layer formed on top of the dyed portion of the linear polarizing film layer and the patterned intermediate layer.

2. In paragraph 1, The above linear polarizing film layer is a circular polarizer in which a lyotropic liquid crystal polymer is aligned.

3. In paragraph 1, The above intermediate layer is a circular polarizer that has been developed by photography to form a pattern.

4. In paragraph 1, A circular polarizer wherein the intermediate layer is made of a polymer that can be developed by photolithography to form a pattern.

5. In paragraph 4, A circular polarizer wherein the polymer is a polymer having a benzophenone pendant.

6. In paragraph 5, The above polymer is a circular polarizer having a unit of the following chemical formula 1. [Chemical Formula 1] In the above chemical formula 1, R1 and R2 are each independently hydrogen or a C1 to C3 alkyl group, R3 is any one selected from a C1 to C20 alkyl group having one or more polar groups selected from a hydroxy group, an amine group, a carboxylic acid group, a carboxylate group, a sulfonic acid group, a sulfonic acid group, and an ammonium base group; a C6 to C30 aryl group having the polar group; a C7 to C30 aralkyl group having the polar group; a C7 to C30 alkylaryl group having the polar group; a C1 to C20 alkyl group having an ether group; a C1 to C20 alkyl group having an ether group and the polar group; a C6 to C30 aryl group having an ether group and the polar group; a C7 to C30 aralkyl group having an ether group and the polar group; a C7 to C30 alkylaryl group having an ether group and the polar group; R4 is any one functional group selected from among a substituted or unsubstituted benzophenone group; a C1 to C20 alkyl group including a substituted or unsubstituted benzophenone derivative; a C6 to C30 aryl group including a substituted or unsubstituted benzophenone derivative; a C7 to C30 aralkyl group including a substituted or unsubstituted benzophenone derivative; a C7 to C30 alkylaryl group including a substituted or unsubstituted benzophenone derivative; and a C1 to C20 alkyl group having a substituted or unsubstituted benzophenone derivative and an ether group; a C6 to C30 aryl group having a substituted or unsubstituted benzophenone derivative and an ether group; a C7 to C30 aralkyl group having a substituted or unsubstituted benzophenone derivative and an ether group; and a C7 to C30 alkylaryl group having a substituted or unsubstituted benzophenone derivative and an ether group. m and n are in a molar ratio of 0.001 to 0.999:0.999:0.

001.

7. In paragraph 1, A circular polarizer in which the above-mentioned linear polarizing film layer is formed on a substrate layer.

8. In paragraph 7, The above substrate layer is a circular polarizer, which is a silicon substrate, a polymer film, an OLED panel or a glass substrate.

9. In paragraph 1, A circular polarizer wherein the above retardation layer is one or more retardation layers selected from a HWP (half wave plate) layer and a QWP (1 / 4 wave plate) layer.

10. In paragraph 1, A circular polarizer in which an adhesive layer is further formed between at least one of the layers of the above circular polarizer.

11. In paragraph 10, A circular polarizer in which the above adhesive layer is a deposition layer in which hexaalkyldisilazane is deposited.

12. A method for manufacturing a circular polarizer, comprising: a base layer; a linear polarizing film layer patterned with dyed and non-dyed portions formed on the base layer; a patterned intermediate layer formed on top of the non-dyed portion of the linear polarizing film layer; and a retardation layer formed on top of the dyed portion of the linear polarizing film layer and the patterned intermediate layer; A step of forming a linear polarizing film layer by coating and orienting a lyotropic liquid crystal solution on a substrate layer; A step of forming an intermediate layer by applying a polymer solution that can be patterned by lithography on the upper part of the linear polarizing film layer; A step of placing a mask having a pattern formed on the upper part of the intermediate layer, curing it by irradiating it with light using a photolithography process, and developing the non-irradiated portion with a developer to form a patterned intermediate layer; A step of dyeing a linear polarizing film layer exposed on the lower portion of the patterned intermediate layer with a doping solution to form a patterned linear polarizing film layer with a dyed portion and a non-dyed portion; A method for manufacturing a circular polarizer including:

13. In paragraph 12, A method for manufacturing a circular polarizer, further comprising the step of forming a retardation layer on top of the patterned linear polarizing film layer and the patterned intermediate layer.

14. In paragraph 13, A method for manufacturing a circular polarizer, wherein the above retardation layer comprises one or two types selected from HWP (1 / 2 wave plate) and QWP (1 / 4 wave plate).

15. In paragraph 12, A method for manufacturing a circular polarizer, further comprising a step of forming an adhesive layer between one or more layers among the substrate layer, the patterned linear polarizing film layer, the patterned intermediate layer, and the retard layer.

16. In paragraph 15, A method for manufacturing a circular polarizer, wherein the above adhesive layer is a deposition layer in which hexaalkyldisilazane is deposited.

17. A patterned linear polarizer comprising a linear polarizing film layer patterned into dyed and undyed portions; and a patterned intermediate layer formed on top of the undyed portion of the linear polarizing film layer.

18. In paragraph 17, The above linear polarizing film layer is a patterned linear polarizer manufactured by orienting a lyotropic liquid crystal material.

19. In paragraph 17, A patterned linear polarizer, wherein the patterned intermediate layer is manufactured using a polymer that can be developed by photolithography to form a pattern.

20. In paragraph 19, A patterned linear polarizer wherein the polymer is a polymer having a benzophenone pendant.

21. In paragraph 20, A patterned linear polarizer having a polymer having a unit of the following chemical formula 1. [Chemical Formula 1] In the above chemical formula 1, R1 and R2 are each independently hydrogen or a C1 to C3 alkyl group, R3 is any one selected from a C1 to C20 alkyl group having one or more polar groups selected from a hydroxy group, an amine group, a carboxylic acid group, a carboxylate group, a sulfonic acid group, a sulfonic acid group, and an ammonium base group; a C6 to C30 aryl group having the polar group; a C7 to C30 aralkyl group having the polar group; a C7 to C30 alkylaryl group having the polar group; a C1 to C20 alkyl group having an ether group; a C1 to C20 alkyl group having an ether group and the polar group; a C6 to C30 aryl group having an ether group and the polar group; a C7 to C30 aralkyl group having an ether group and the polar group; a C7 to C30 alkylaryl group having an ether group and the polar group; R4 is any one functional group selected from among a substituted or unsubstituted benzophenone group; a C1 to C20 alkyl group including a substituted or unsubstituted benzophenone derivative; a C5 to C30 aryl group including a substituted or unsubstituted benzophenone derivative; a C7 to C30 aralkyl group including a substituted or unsubstituted benzophenone derivative; a C7 to C30 alkylaryl group including a substituted or unsubstituted benzophenone derivative; and a C1 to C20 alkyl group having a substituted or unsubstituted benzophenone derivative and an ether group; a C6 to C30 aryl group having a substituted or unsubstituted benzophenone derivative and an ether group; a C7 to C30 aralkyl group having a substituted or unsubstituted benzophenone derivative and an ether group; and a C7 to C30 alkylaryl group having a substituted or unsubstituted benzophenone derivative and an ether group. m and n are in a molar ratio of 0.001 to 0.999:0.999:0.

001.

22. In paragraph 17, A patterned linear polarizer, wherein the patterned linear polarizing film layer is formed on top of any one of a substrate layer selected from a silicon substrate, a polymer film, an OLED panel, or a glass substrate.

23. A display comprising a circular polarizer selected from any one of claims 1 to 11.

Images