WO2015108261A1 - 국지적으로 편광 해소 영역을 갖는 편광자 제조 방법, 이를 이용하여 제조된 편광자 및 편광판 - Google Patents
국지적으로 편광 해소 영역을 갖는 편광자 제조 방법, 이를 이용하여 제조된 편광자 및 편광판 Download PDFInfo
- Publication number
- WO2015108261A1 WO2015108261A1 PCT/KR2014/009022 KR2014009022W WO2015108261A1 WO 2015108261 A1 WO2015108261 A1 WO 2015108261A1 KR 2014009022 W KR2014009022 W KR 2014009022W WO 2015108261 A1 WO2015108261 A1 WO 2015108261A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polarizer
- polarization
- region
- solution
- iodine
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
Definitions
- the present invention relates to a polarizer manufacturing method, a polarizer and a polarizing plate manufactured by using the same, and more particularly, to a polarizing plate having a polarization canceling area locally to be suitable for mounting and color development of components such as a camera module.
- Polarizers have been applied to various image display devices such as liquid crystal display devices and organic light emitting display devices.
- polarizing plates are dyed iodine and / or dichroic dye on a polyvinyl alcohol (hereinafter, referred to as PVA) -based film, crosslinking the iodine and / or dichroic dye using boric acid, etc. It is used in the form which laminated
- image display apparatuses are becoming more and more slim in recent years, and have evolved toward minimizing bezel portions and edge thicknesses on which a screen is not displayed to realize a large screen.
- components such as a camera are mounted on a display device, and in consideration of design elements, attempts are made to assign or discolor various colors to a product logo or a border area.
- the polarizing plate is dark black because it is dyed with iodine and / or dichroic dye in the entire area of the polarizing plate, and as a result, it is difficult to impart various colors to the image display device, and in particular, on a component such as a camera When the polarizing plate is located, a problem such as absorbing more than 50% of the amount of light in the polarizing plate is lowered the visibility of the camera lens.
- the present invention is to solve the problems as described above, the polarizer and the manufacturing method of the polarization is removed from the partial region of the polarizing plate, as in the prior art without physically puncture, do not spoil the appearance, the polarization removal by a simple process only Its purpose is to make it possible.
- the present invention comprises the steps of preparing a polyvinyl alcohol-based polarizer to which at least one of iodine and dichroic dyes are dyed; And locally contacting a decolorizing solution comprising 1% to 30% by weight of a decolorizing agent to a portion of the polarizer to form a polarization-resolving region having a single transmittance of 80% or more in the 400 nm to 800 nm wavelength band.
- a polarizer manufacturing method are provided.
- the bleaching agent is composed of sodium hydroxide (NaOH), sodium sulfate (NaSH), sodium azide (NaN 3 ), potassium hydroxide (KOH), potassium sulfate (KSH) and potassium thiosulfate (KS 2 O 3 ) It is preferable to include any one or more selected from the group.
- the decoloring solution preferably has a pH of 11 to 14 and a viscosity of 1 cP to 55 cP.
- the decolorizing solution further comprises a thickener
- the thickener is polyvinyl alcohol-based resin, polyvinyl acetoacetate-based resin, acetoacetyl group-modified polyvinyl alcohol-based resin, butenediol vinyl alcohol-based, polyethylene glycol It is preferable to include any one or more selected from the group consisting of a col resin and a polyacrylamide resin.
- the time (y) of contacting the decolorizing solution satisfies the following Equation 1 with respect to the content (x) of the decolorizing agent.
- x is 1 to 30
- a is 0.1 to 0.7
- b is -1 to -20
- c is 20 to 120
- -b / 2a is 1 to 20.
- the present invention is a polyvinyl alcohol polarizer prepared by the above-described method, in which any one or more of iodine and dichroic dyes are dyed, the polarization resolution of 80% or more in the unit transmittance in the wavelength range of 400nm to 800nm locally.
- a polarizer having a region, wherein a step formed between the polarization elimination region and the region excluding the polarization elimination region is 0 ⁇ m to 10 ⁇ m.
- the polarization cancellation area of the polarizer has a polarization degree of 20% or less, the region excluding the polarization cancellation area has a single transmittance of 40% to 45%, and preferably has a polarization degree of 99% or more.
- the present invention provides a polarizing plate manufactured by laminating a polarizer protective film on at least one surface of the polarizer.
- the present invention minimizes the occurrence of steps by contacting a decolorizing solution with a portion of the polyvinyl alcohol-based polarizer, thereby eliminating polarization of the region, and can form a polarization-resolving region close to completely transparent without damage such as holes or tears. It was made.
- the polarizer of the present invention manufactured in this manner even if the polarizing plate is mounted on a component such as a camera does not cause a problem due to the brightness deterioration.
- the manufacturing method of the present invention can be usefully applied to a narrow bezel design because by adjusting the viscosity of the decolorizing solution, it is possible to form a polarization resolution area of a fine size in a desired position.
- Ts single transmittance
- DOP polarization degree
- FIG. 2 is a graph of the single transmittance (Ts) and the polarization degree (DOP) values in the visible region when 0.1 wt% of potassium hydroxide (KOH) aqueous solution is contacted with a polarizer according to Comparative Example 1.
- Ts single transmittance
- DOP polarization degree
- FIG 3 is a graph showing a correlation between the content of potassium hydroxide (KOH) in the aqueous solution and the time at which decolorization is completed when forming a polarization elimination region using an aqueous potassium hydroxide (KOH) solution.
- KOH potassium hydroxide
- FIG. 4 illustrates the case of forming a polarization-resolving region using a solution containing a thickener (butenediol vinyl alcohol resin, 4 wt%) in an aqueous potassium hydroxide solution, at each temperature condition, and the content of potassium hydroxide (KOH) in the solution. It is a graph showing the correlation between the times when the decolorization is completed.
- a thickener butenediol vinyl alcohol resin, 4 wt%) in an aqueous potassium hydroxide solution, at each temperature condition, and the content of potassium hydroxide (KOH) in the solution.
- the present inventors selectively contact the decolorizing solution with a part of the polyvinyl alcohol-based polarizers in which iodine and / or dichroic dyes are dyed, thereby solving polarization having a single transmittance of 80% or more without applying a physical method such as punching. It was found that a polarizer having an area could be produced and completed the present invention.
- the method of manufacturing a polarizer according to the present invention comprises the steps of 1 preparing a polyvinyl alcohol polarizer in which at least one of iodine and dichroic dye is dyed and 2 a 1% by weight to 30% by weight of a bleaching agent in a portion of the polarizer Contacting the decolorizing solution to form a polarization-resolving region having a single transmittance of 80% or more in the 400 nm to 800 nm wavelength band.
- the step of locally contacting the decolorizing solution to a portion of the polarizer damage to the polarizer and the polarizing plate, and compared to the conventional methods of physical removal such as punching and cutting and Problems such as contamination of the camera lens can be overcome, and the polarization elimination area can be easily controlled, and there is an advantageous effect in that the polarization is removed by a simple process.
- the polarization canceling region of the polarizer is formed through a process of selectively contacting a decolorizing solution with a partial region of a polyvinyl alcohol polarizer in which iodine and / or a dichroic dye is dyed.
- the region excluding the polarization canceling region means a region having the optical properties of the present polarizer as it is the remaining region except for the polarization canceling region in the polarizer.
- the polarization canceling region formed by the above-mentioned manufacturing method has a unitary transmittance of 80% or more, 90% or 92% or more in the wavelength band of about 400 nm to 800 nm, preferably 450 nm to 750 nm, which is a visible light region. desirable. Moreover, it is more preferable that the polarization cancellation area is 20% or less, and 5% or less. The higher the unitary transmittance of the polarization cancellation area and the lower the degree of polarization, the better the visibility, thereby further improving the performance and image quality of the camera lens to be located in the area, and in the case of color development, the visibility is excellent.
- the region excluding the polarization cancellation region of the polarizer preferably has a single transmittance of 40% to 45%, more preferably 42% to 45%. Furthermore, it is preferable that the polarization degree of the area
- a polyvinyl alcohol-based polarizer in which at least one of iodine and dichroic dyes are salted iodine and polyvinyl alcohol polymer film (Polyvinyl alcohol) And / or a dyeing step of dyeing with a dichroic dye, a crosslinking step of crosslinking the dye with the polyvinyl alcohol-based film, and a drawing step of stretching the polyvinyl alcohol-based film.
- the dyeing step is to dye the iodine and / or dichroic dye having a dichroic dye on the polyvinyl alcohol-based film, the iodine and / or the dichroic dye absorbs light vibrating in the stretching direction of the polarizer, vertical The light vibrating in the direction can be passed to obtain polarized light having a specific vibration direction.
- dyeing may be performed by impregnating the polyvinyl alcohol-based film in a treatment bath containing a solution containing a dichroic substance such as an iodine solution.
- water is generally used as the solvent used in the solution of the dyeing step, but an appropriate amount of an organic solvent having compatibility with water may be added.
- dichroic substances such as iodine may be used in an amount of 0.06 parts by weight to 0.25 parts by weight with respect to 100 parts by weight of the solvent. This is because, when the dichroic material such as iodine is in the above range, the transmittance of the polarizer produced after stretching may satisfy the range of 40.0% to 47.0%.
- auxiliary agent such as an iodide compound in order to improve the dyeing efficiency
- the auxiliary agent in a ratio of 0.3 parts by weight to 2.5 parts by weight with respect to 100 parts by weight of the solvent.
- the reason for adding an auxiliary agent such as the iodide compound is to increase the solubility of iodine in water because the solubility in water is low in the case of iodine.
- the mixing ratio of the iodine and the iodide compound is preferably 1: 5 to 1:10.
- iodide compound that may be added in the present invention, potassium iodide, lithium iodide, sodium iodide, zinc iodide, aluminum iodide, lead iodide, copper iodide, barium iodide, calcium iodide, tin iodide, titanium iodide or these And mixtures thereof, but is not limited thereto.
- the temperature of the treatment bath may be maintained at about 25 °C to 40 °C, the reason is that the dyeing efficiency may be lowered at a lower temperature of less than 25 °C, iodine sublimation at too high temperature above 40 °C This can increase the use of iodine.
- the time for immersing the polyvinyl alcohol-based film in the treatment bath may be about 30 seconds to 120 seconds, because, when the immersion time is less than 30 seconds, the dyeing may not be uniformly made to the polyvinyl alcohol-based film. If it exceeds 120 seconds, the dyeing is saturated and there is no need for further dipping.
- a deposition method performed by immersing a polyvinyl alcohol-based film in boric acid aqueous solution or the like is generally used, but may be performed by a coating method or a spraying method for spraying a solution on the film.
- the immersion method when the iodine and / or dichroic dye is dyed to the polyvinyl alcohol-based film by the dyeing step, using the crosslinking agent to the polyvinyl iodine and / or dichroic dye It is made to adsorb
- the solvent used in the solution of the cross-linking bath is generally used water, an appropriate amount of an organic solvent having compatibility with water may be added, the cross-linking agent is 0.5 to 5.0 parts by weight based on 100 parts by weight of the solvent May be added in portions.
- the crosslinking agent when the crosslinking agent is contained in less than 0.5 parts by weight, the crosslinking in the polyvinyl alcohol-based film is insufficient, the strength of the polyvinyl alcohol-based film in water may fall, if exceeding 5.0 parts by weight, excessive crosslinking is formed It is possible to reduce the stretchability of the polyvinyl alcohol-based film.
- boron compounds such as boric acid and borax, glyoxal, glutaraldehyde, etc. are mentioned, These can be used individually or in combination.
- the temperature of the cross-linking bath depends on the amount and the stretching ratio of the cross-linking agent, but is not limited to this, it is generally preferred that the 45 °C to 60 °C.
- the temperature of the crosslinking bath is controlled at high temperature conditions in order to improve the mobility of the polyvinyl alcohol-based film chains. Adjust the temperature.
- the temperature of the crosslinking bath since the stretching process is 5 times or more, the temperature of the crosslinking bath must be maintained at 45 ° C. or higher to improve the stretchability of the polyvinyl alcohol-based film.
- the time for immersing the polyvinyl alcohol-based film in the crosslinking bath is preferably about 30 seconds to 120 seconds.
- the reason for this is that when the immersion time is less than 30 seconds, the crosslinking may not be uniformly performed on the polyvinyl alcohol-based film, and when the immersion time is longer than 120 seconds, the crosslinking is saturated and there is no need for further immersion. .
- stretching in the stretching step refers to stretching the film uniaxially to orient the polymer of the film in a certain direction.
- the stretching method can be divided into wet stretching method and dry stretching method, and dry stretching method is again an inter-roll stretching method, a heating roll stretching method, a compression stretching method, a tenter stretching method, or the like.
- the wet stretching method is classified into a tenter stretching method, an inter-roll stretching method, and the like.
- the stretching step it is preferable to stretch the polyvinyl alcohol-based film at a stretching ratio of 4 times to 10 times, and preferably at a stretching temperature of 45 ° C. to 60 ° C. Because, in order to impart polarization performance to the polyvinyl alcohol-based film, it is necessary to orient the chain of the polyvinyl alcohol-based film, the chain orientation may not sufficiently occur at a draw ratio of less than 4 times, polyvinyl at a draw ratio of more than 10 times This is because the alcohol-based film chain can be cut.
- the stretching temperature may vary depending on the content of the cross-linking agent, at a temperature of less than 45 °C polyvinyl alcohol-based film chain fluidity of the lowering the stretching efficiency may be reduced, if the temperature exceeds 60 °C, polyvinyl alcohol This is because the system film may be softened and the strength may be weakened.
- the stretching step may be carried out simultaneously or separately with the dyeing step or crosslinking step.
- the deposition step is carried out in an iodine solution, and if it is carried out simultaneously with the crosslinking step, it is preferably carried out in an aqueous solution of boric acid.
- the present invention (2) locally contacting a decolorizing solution containing 1% by weight to 30% by weight of a bleaching agent to a part of the polarizer, thereby providing a polarization solution area having a single transmittance of 80% or more in the 400 nm to 800 nm wavelength band. It characterized by comprising the step of forming.
- the decolorizing solution when looking at each component in the step of forming the polarization cancellation area, the decolorizing solution essentially includes a bleaching agent and a solvent.
- the bleaching agent is not particularly limited as long as it can decolor the iodine and / or the dichroic dye dye on the polarizer.
- the solvent may additionally be mixed with the alcohol solvent.
- the alcohol solvent it is not limited to this, For example, methanol, ethanol, butanol, isopropyl alcohol, etc. can also be mixed and used.
- the content of the decolorant may vary depending on the contact time in the decolorizing process, preferably, the decolorizing solution contains about 1% to 30% by weight, more preferably about 5% to 15% by weight of the decolorizing agent. It is desirable to.
- the content of the decolorant is less than 1% by weight, decolorization does not occur, or decolorization takes place over several ten minutes or more, and it is practically difficult to apply.
- the decolorant is more than 30% by weight, the decolorant does not easily diffuse into the polarizer. It is hard to become effective discoloration.
- Figure 2 when the content of the decolorant is less than 1% by weight, it can be seen that there is almost no change in polarization degree and single transmittance irrespective of the contact time.
- the bleaching solution has a pH of about 11 to 14, more preferably about 13 to 14.
- the bleaching agent of the present invention is a strong base compound, and should be strong enough to destroy boric acid, which forms crosslinks between polyvinyl alcohols, and discoloration does not occur when the pH is not satisfied.
- boric acid which forms crosslinks between polyvinyl alcohols, and discoloration does not occur when the pH is not satisfied.
- sodium thiosulfate (pH 7) may cause discoloration in general aqueous solutions of iodine compounds, but in actual polarizers (PVA) (10 hours) Discoloration does not occur.
- PVA polarizers
- the bleaching solution has a viscosity of about 1 cP to 55 cP, preferably about 5 cP to 20 cP, and more preferably about 10 cP to 15 cP.
- the viscosity of the solution is too low, the flow and diffusion of the decolorizing solution occurs in the in-line process, it is difficult to make a decolorized part of the desired shape, if the viscosity is too high washing is not effective in the washing step There is a problem.
- the method for producing a polarizer of the present invention is characterized in that the decolorizing solution is brought into contact with the polarizer to form a polarization canceling area, and an object thereof is to form a polarization canceling area having a desired size at a desired position.
- the thickener improves the viscosity of the decolorizing solution, suppresses the diffusion of the decolorizing solution, and helps to form a polarization eliminating region at a desired size and location.
- polarizer manufacturing is carried out in a roll to roll process, and there must be no diffusion or flow of the decolorizing solution in order to accurately create the desired decolorizing site in the moving polarizer.
- the discoloring solution When a low viscosity solution is applied to a fast-moving polarizer, the discoloring solution is diffused to an undesired area due to the difference in the relative velocity of the liquid and the polarizer. Discoloration of undesired positions or sizes may occur by the flow of the applied solution during the process.
- the thickener is not limited so long as it is low in reactivity and can increase the viscosity of the solution.
- polyvinyl alcohol-based resin polyvinyl acetoacetate-based resin, acetoacetyl group-modified polyvinyl alcohol-based resin, butenediol vinyl It is more preferable to include any one or more selected from the group consisting of alcohols, polyacrylamides and polyethylene glycols. At this time, it is preferable that the viscosity of the said thickener is 10cP-15cP.
- the thickener may be included in about 0.5% to 30% by weight, preferably 2.5% to 15% by weight relative to the decolorizing solution. If the content of the thickener exceeds the above range, the viscosity is too high to wash effectively, and if the content of the thickener is too low, the viscosity is low to realize the discoloration area of the desired shape and size by the diffusion and flow of the liquid. Hard.
- composites of polyvinyl alcohols in which iodine and / or dichroic dyes are dyed can absorb light in the visible range of wavelengths such as 400 nm to 800 nm.
- the decolorizing solution is in contact with the polarizer, the iodine or dichroic dye absorbing the light in the visible light wavelength band present in the polarizer is decomposed, thereby decolorizing the polarizer to increase the transmittance and lower the polarization degree.
- I 5 which absorbs light in the visible light region - (620nm) I 3 - ( 340nm), by digesting the iodine and iodide ion complexes such as I 2 (460nm), I - to generate or salt (300nm or less)
- the polarization function is eliminated in the region of about 400 to 800 nm, which is the visible light region of the polarizer, thereby increasing the overall transmittance and making the polarizer transparent.
- the polarizing function can be resolved by decomposing the arranged iodine complex that absorbs visible light into a monomolecular form that does not absorb visible light in order to make polarized light.
- the polarizer shows a polarization canceling area (Ds) of about 99% or more and a single transmittance (Ts) of about 40% in the visible light region, but forms a polarization canceling area by the manufacturing method.
- Ds polarization canceling area
- Ts single transmittance
- the degree of polarization was 10% or less, the unit transmittance was confirmed to have a value of 80% or more.
- the step of contacting the decolorizing solution to solve the polarization a contactless printing method such as a non-contact printing method or gravure printing using a dispenser or inkjet to apply the decolorizing agent in a desired local region or a desired shape pattern It is preferably carried out by the law.
- the polarizer manufacturing method of the present invention preferably further comprises the step of washing with alcohol after the step of eliminating the polarization.
- the step of eliminating the polarization if the remaining decolorization solution is not properly washed, the solution is diffused or remains on the polarizer, so that the polarization elimination region may be formed in an undesired size and shape, and the polarization elimination region having a fine size may be formed. This is because it is difficult to form.
- the alcohol it is easy to dry and can be easily removed, and can be suitably used in polarizers other than the polarization elimination region because it does not affect the transmittance or the degree of polarization.
- the alcohol is preferably, but not limited to, ethanol, methanol, propanol, butanol, isopropyl alcohol, or a mixture thereof.
- the washing may be performed by immersing the polarizer in alcohol for 1 to 180 seconds, more preferably 3 to 30 seconds, or by dispensing or inkjet on a localized area which is in contact with a decolorizing solution, such as a decolorizing method. There is a method to apply to.
- the iodine compound and the salt formed by the decoloring agent are washed away by washing with an alcohol using a bleaching agent, and the iodine and iodine ion complexes of the polarization canceling region are washed away.
- the content of is minimized. Therefore, the absorption of the light of the residual iodine and the iodine ion complex in the polarization canceling region is reduced, resulting in a more transparent effect.
- the time (y) for contacting the decolorizing solution refers to the time taken for the single transmittance of the polarization elimination area to be 90% or more, hereinafter referred to as 'decolorization completion time'.
- X is 1 to 30, a is 0.1 to 0.7, b is -1 to -20, and c is 20 to 120.
- x is 1 to 30, a is 0.2 to 0.7, b is -9 to -15, and c is 50 to 110 .
- the solution includes a bleaching agent, a solvent and a thickener, x is 1 to 20, the a is 0.1 to 0.3, the b is -2 to -7, and the c is 30 to 70.
- -b / 2a is 1-20.
- the bleaching solution is composed only of a bleaching agent and a solvent, it is preferable that -b / 2a is about 13 to 19.
- the -b / 2a is preferably about 8 to 12.
- the -b / 2a is a numerical value representing the content of the decolorizing agent at the point where the decolorization time becomes the minimum when the specific decolorizing solution decolorizes the polarizer, that is, when the range of -b / 2a is 1 to 20, decolorization time is It means that it is a decolorizing solution which satisfies that the content of the decolorizing agent which becomes a minimum becomes 1 to 20 weight%.
- the content of the bleaching agent that is, the concentration of the solution
- the content range of the appropriate bleaching agent that can minimize the time to complete the decolorization through the drawing It can be seen that it exists. That is, from the viewpoint of the concentration of the decolorizing solution, if the content of the decolorizing agent is too high, the intermolecular attraction between the same species is increased, it is difficult to move the molecules of the decolorizing solution to the polarizer, the adverse effect occurs, so that the decolorizing solution of the appropriate concentration This is necessary.
- the width of the second graph is narrower than that of FIG. 3, which increases the viscosity of the solution by adding the thickener.
- the polarization eliminating region is formed by suppressing the diffusion of the decolorizing agent with a relatively low content of the decolorizing agent at a desired position.
- a polarizer according to the present invention in a polyvinyl alcohol polarizer in which at least one of iodine and dichroic dye is salted, has a polarization canceling region having a single transmittance of 80% or more in a wavelength band of 400 nm to 800 nm, and the polarization It is characterized in that the step formed between the solution area and the area excluding the polarization solution area is 0 ⁇ m to 10 ⁇ m.
- the polarization cancellation region may have a unitary transmittance of 80% or more, 90% or 92% or more in a wavelength band of about 400 nm to 800 nm, preferably 450 nm to 750 nm, which is a visible light region. desirable. Moreover, it is more preferable that the polarization cancellation area is 20% or less, and 5% or less. In addition, the region excluding the polarization cancellation region of the polarizer preferably has a single transmittance of 40% to 45%, more preferably 42% to 45%. Furthermore, it is preferable that the polarization degree of the area
- the polarizer of the present invention preferably has a step formed between the polarization elimination region and the region excluding the polarization elimination region of about 0 ⁇ m to 10 ⁇ m, more preferably about 0 ⁇ m to 5 ⁇ m.
- the step means a height difference between the boundary region between the polarization elimination region and the region excluding the polarization elimination region, which is the portion where the camera module or the color developing device is positioned in the polarizer / polarizer, and the highest height of the boundary region and the polarization elimination region. Says the difference between the lowest heights.
- the step measures a boundary between the polarization elimination region and the region excluding the polarization elimination region, which is an optical profiler (Nanoview E1000, Nanosystem Co., Ltd.) or a three-dimensional microscope ( Confocal Laser Scanning Microscopy (CLSM) can be measured directly with a device such as, but is not particularly limited as long as the device can measure the height in addition to the above equipment.
- a boundary portion between the polarization elimination region and the region excluding the polarization elimination region may be present more than 0 and 3 cm or less from the center of the polarization elimination region.
- the polarization cancellation area is at least one of iodine and dichroic dye content of about 0.1% to 0.5% by weight, preferably about 0.1% to 0.35% by weight.
- the iodine that was present in the complex form on the polarizer is washed away by the reaction between the decolorant and the iodine, so that the content of iodine and / or dichroic dye is greatly reduced.
- the content of any one or more of the iodine and the dichroic dye in the region excluding the polarization canceling region is about 1% by weight to 4% by weight, and preferably 2% by weight to 4% by weight.
- the content of the iodine and / or dichroic dye was measured using an optical X-ray analyzer (manufactured by Rigaku Electric Industries, Ltd., trade name "ZSX Primus II").
- an optical X-ray analyzer manufactured by Rigaku Electric Industries, Ltd., trade name "ZSX Primus II”
- the average weight percent per volume of 19.2 mm 3 was measured.
- the polarization canceling region is formed by contacting the polarizer with a decolorizing solution, as will be explained below. At this time, the content of iodine and / or dichroic dye in the polarization canceling area is significantly reduced compared to the other areas, thereby, the transmittance is greatly improved.
- the polarization cancellation area is not limited thereto, but the area is 0.005% to 40% of the entire polarizing plate according to the type of display and the use of the polarization removal area. It is desirable to occupy.
- the polarization elimination region is not particularly limited in shape or position thereof, and may be formed in various forms and positions.
- the polarization canceling area may be formed to correspond to the shape of the part at a location where a component such as a camera is mounted, or may be formed in the shape of a product logo in an area where a product logo is printed, and a polarizing member.
- the color is to be given to the edge portion of the polarizing member may be formed in a frame shape.
- the present invention provides a polarizing plate in which a polarizer protective film is laminated on one or both surfaces of the polarizer including the polarization canceling area.
- the polarization is resolved only in a partial region of the polarizer, so that the light transmittance is high and the polarization degree is low, and unlike the conventional methods of removing physical polarization such as punching and cutting, the polarizing plate has no polarization elimination region. It is characterized by.
- the protective film refers to a transparent film attached to both sides of the polarizer to protect the polarizer, acetate, acrylic, polyester, polyether sulfone, polycarbonate-based, such as triacetyl cellulose (TAC) , Polyamide-based, polyimide-based, polyolefin-based resin film and the like can be used, but is not limited thereto.
- the protective film may be laminated using an adhesive, but the adhesive may be a polyvinyl alcohol-based water-based adhesive, but is not limited thereto.
- the polarizing plate may additionally include a functional film such as a wide viewing angle compensation plate or a brightness enhancing film in addition to the protective film to further improve the function.
- the polarizing plate including the polarizer of the present invention as described above may be attached to one side or both sides of the display panel and may be usefully applied to an image display device.
- the display panel may be a liquid crystal panel, a plasma panel, and an organic light emitting panel.
- the image display device may include a liquid crystal display (LCD), a plasma display panel (PDP), and an organic light emitting display device.
- the display device may be an organic light emitting diode (OLED).
- the image display device may be a liquid crystal display device including a liquid crystal panel and polarizing plates provided on both sides of the liquid crystal panel, wherein at least one of the polarizing plates is a polarizing plate including a polarizer according to the present invention.
- the polarizing plate includes a polyvinyl alcohol-based polarizer in which at least one of iodine and dichroic dye is dyed, and has a polarization canceling area having a single transmittance of 80% or more.
- the type of liquid crystal panel included in the liquid crystal display device is not particularly limited.
- a panel of a passive matrix type such as, but not limited to, a twisted nematic (TN) type, a super twisted nematic (STN) type, a ferrolectic (F) type, or a polymer dispersed (PD) type; Active matrix panels such as two-terminal or three-terminal; All known panels, such as an In Plane Switching (IPS) panel and a Vertical Alignment (VA) panel, can be applied.
- IPS In Plane Switching
- VA Vertical Alignment
- other configurations constituting the liquid crystal display device for example, types of upper and lower substrates (eg, color filter substrates or array substrates) are not particularly limited, and configurations known in the art may be employed without limitation. Can be.
- the image display device of the present invention may include, but is not limited to, other components such as a camera module, and other components such as the camera module may be located in the polarization canceling area.
- other components such as a camera module
- the camera module may be located in the polarization canceling area.
- a dyeing process was performed for 60 seconds in a 0.2 wt% concentration and a 25 ° C. iodine solution. Then, after 30 seconds in a 1 wt% boric acid, 45 °C solution, the washing process was carried out a 6-fold stretching process in a solution of boric acid 2.5wt%, 52 °C. After stretching, a polarizer having a thickness of 12 ⁇ m was prepared by performing a complementary color process in a 5 wt% KI solution and drying in an oven at 60 ° C. for 5 minutes.
- a bleaching solution, a solvent and a thickener are prepared in the kind and content described in Table 1 below.
- the decolorizing solution was applied to the prepared polarizer in a region of 3 cm 2 using a dispenser. After 35 seconds after immersion for 3 seconds using ethanol and ethanol was dried for 30 seconds in a 60 °C oven to prepare a polarizer including a polarization canceling region.
- a bleaching solution, a solvent, and a thickener were prepared in a bleaching solution in the kind and content shown in the following [Table 1], and a polarizer was prepared in the same manner as in Example 1.
- region of 3 cm ⁇ 2> was removed using the punching machine for polarizing plate cutting.
- the polarizers prepared by the above Examples and Comparative Examples were cut to a size of 40 mm ⁇ 40 mm, and the specimens were fixed to the measuring holder, and then polarized light was removed using an ultraviolet visible spectrometer (V-7100, manufactured by JASCO). Initial optical properties of the region, that is, single transmittance and polarization degree were measured. In particular, the values at 550 nm are shown in Table 1.
- the content of iodine and / or dichroic dye in the polarization elimination region was measured using an optical X-ray analyzer (manufactured by Rigaku Electric Industries, Ltd., trade name "ZSX Primus II").
- optical X-ray analyzer manufactured by Rigaku Electric Industries, Ltd., trade name "ZSX Primus II”
- the samples prepared in the form of a polarizer sheet having a thickness of 12 ⁇ m prepared by the above Examples and Comparative Examples were placed in a 20 mm holder, and the Iodine KA fluorescence intensity was measured.
- the average of the weight percent per volume of 19.2mm 3 obtained by measuring a total of three times is shown in Table 1 below.
- the decolorization proceeds when the content of the decolorizing agent satisfies the content range of the present invention, it was confirmed that the iodine content of the polarization elimination region is 0.3% by weight or less.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
Abstract
Description
구분 | 용액 조성 (중량%) | 온도(℃) | 탈색완료시간(s) | pH | 편광 해소 영역의 요오드함량(중량%) | 점도 (cP) | 편광 해소 영역의 물성 | 편광 해소 영역의 단차 (㎛) | |||
탈색제 | 용매 | 증점제 | 단체투과도(%) | 편광도(%) | |||||||
실시예 1 | KOH 5 | 물 | - | 25 | 45 | 14 | 0.3 | 1 | 92 | 0.8 | 2.80 |
실시예 2 | KOH 10 | 물 | - | 25 | 36 | 14 | 0.3 | 1 | 92 | 0.8 | 2.63 |
실시예 3 | KOH 10 | 물 | - | 60 | 16 | 14 | 0.3 | 1 | 92 | 0.8 | 2.78 |
실시예 4 | NaOH 5 | 물 | - | 25 | 40 | 14 | 0.3 | 1 | 92 | 0.8 | 2.79 |
실시예 5 | NaOH 10 | 물 | - | 25 | 32 | 14 | 0.3 | 1 | 92 | 0.8 | 2.87 |
실시예 6 | KOH 10 | 물 | 폴리아크릴아마이드계 수지 (15wt%) | 25 | 27 | 14 | 0.3 | 7.8 | 92 | 0.8 | 2.81 |
실시예 7 | KOH 10 | 물 | 부텐디올비닐알코올계 수지(4wt%) | 25 | 26 | 14 | 0.3 | 26 | 92 | 0.8 | 2.69 |
비교예 1 | KOH 0.1 | 물 | - | 25 | 탈색x | 12.8 | 3 | 1 | 42.5 | 99.99 | 1.10 |
비교예 2 | KOH 50 | 물 | - | 25 | 탈색x | 14 | 3 | 1 | 42.5 | 99.99 | 0.99 |
비교예 3 | KOH 50 | 물 | 부텐디올비닐알코올계 수지(4wt%) | 25 | 탈색x | 14 | 3 | 26 | 42.5 | 99.99 | 1.01 |
비교예 4 | 266nm laser 조사 | 0.6w/cm2의 power사용10~20분 조사 | 3 | 86.2 | 8.1 | 0 | |||||
비교예 5 | 펀칭 절삭 | 편광판 제단용 펀칭기를 이용하여 3cm2의 영역을 제거 | - | - | - | - | 12.77 |
Claims (17)
- 요오드 및 이색성 염료 중 어느 하나 이상이 염착된 폴리비닐알코올계 편광자를 준비하는 단계; 및상기 편광자의 일부 영역에 탈색제를 1 중량% 내지 30 중량%로 포함하는 탈색 용액을 국지적으로 접촉시켜, 400nm 내지 800nm 파장 대역에서의 단체 투과도가 80% 이상인 편광 해소 영역을 형성하는 단계를 포함하는 편광자 제조 방법.
- 제1항에 있어서,상기 탈색제는 수산화나트륨(NaOH), 황산화나트륨(NaSH), 아지트화나트륨(NaN3), 수산화칼륨(KOH), 황산화칼륨(KSH) 및 티오황산칼륨(KS2O3)로 이루어진 군에서 선택된 어느 하나 이상을 포함하는 것인 편광자 제조 방법.
- 제1항에 있어서,상기 탈색 용액은 pH가 11 내지 14인 편광자 제조 방법.
- 제1항에 있어서,상기 탈색 용액은 점도가 1cP 내지 55cP인 편광자 제조 방법.
- 제1항에 있어서,상기 탈색 용액은 증점제를 더 포함하는 것인 편광자 제조 방법.
- 제5항에 있어서,상기 증점제는 폴리비닐알코올계 수지, 폴리비닐아세토아세테이트계 수지, 아세토아세틸기 변성 폴리비닐알코올계 수지, 부텐디올비닐알코올계, 폴리에틸렌 글라이콜계 수지 및 폴리아크릴아마이드계 수지로 이루어진 군에서 선택된 어느 하나 이상을 포함하는 것인 편광자 제조 방법.
- 제5항에 있어서,상기 탈색 용액은 전체 용액에 대하여,탈색제 1 중량% 내지 30 중량%;증점제 0.5 중량% 내지 30 중량% 및잔부의 물을 포함하는 것인 편광자 제조 방법.
- 제1항에 있어서,상기 탈색 용액을 접촉시켜 편광을 해소하는 단계는 디스펜서, 잉크젯 또는 그라비아 프린팅 방법에 의해 수행되는 편광자 제조 방법.
- 제1항에 있어서,상기 편광 해소 영역을 형성하는 단계 이후에 알코올을 이용하여 세척하는 단계를 추가로 포함하는 편광자 제조 방법.
- 제1항에 있어서,상기 탈색 용액을 접촉시키는 시간(y)은 용액의 농도(x)에 대하여 하기 수학식 1을 만족시키는 편광자 제조 방법.[수학식 1]y = ax2 + bx + c상기 x는 1 내지 30 이고,상기 a는 0.1 내지 0.7이고,상기 b는 -1 내지 -20 이고,상기 c는 20 내지 120이며,-b/2a는 1 내지 20임.
- 요오드 및 이색성 염료 중 어느 하나 이상이 염착된 폴리비닐알코올계 편광자에 있어서,국지적으로 400nm 내지 800nm 파장 대역에서의 단체 투과도가 80% 이상인 편광 해소 영역을 갖고,상기 편광 해소 영역과 편광 해소 영역을 제외한 영역 사이에 형성된 단차가 0㎛ 내지 10㎛인 편광자.
- 제11항에 있어서,상기 편광 해소 영역은 요오드 및 이색성 염료 중 어느 하나 이상의 함량이 0.1 중량% 내지 0.5 중량%이고, 상기 편광 해소 영역을 제외한 영역은 요오드 및 이색성 염료 중 어느 하나 이상의 함량이 1 중량% 내지 4 중량%인 편광자.
- 제11항에 있어서,상기 편광자의 편광 해소 영역은 편광도가 20% 이하인 편광자.
- 제11항에 있어서,상기 편광자의 편광 해소 영역을 제외한 영역의 단체 투과도는 40% 내지 45%인 편광자.
- 제11항에 있어서,상기 편광자의 편광 해소 영역을 제외한 영역의 편광도는 99%이상인 편광자.
- 제11항에 있어서,상기 편광 해소 영역의 면적이 전체 편광판에서 0.005% 내지 40%를 차지하는 편광자.
- 청구항 11 내지 16 중 어느 한 항에 따른 편광자의 적어도 일면에 편광자 보호필름을 합지하여 제조된 편광판.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016531555A JP6434020B2 (ja) | 2014-01-17 | 2014-09-26 | 局地的に偏光解消領域を有する偏光子の製造方法、これを用いて製造された偏光子および偏光板 |
CN201480027253.6A CN105209944B (zh) | 2014-01-17 | 2014-09-26 | 制备局部具有去偏光区域的偏光片的方法,使用该方法制备的偏光片和偏光板 |
US14/911,240 US10436962B2 (en) | 2014-01-17 | 2014-09-26 | Preparing method for polarizer having locally depolarized area, polarizer and polarizing plate manufactured by using the same |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2014-0006269 | 2014-01-17 | ||
KR20140006269 | 2014-01-17 | ||
KR10-2014-0126248 | 2014-09-23 | ||
KR1020140126248A KR20150086159A (ko) | 2014-01-17 | 2014-09-23 | 국지적으로 편광 해소 영역을 갖는 편광자 제조 방법, 이를 이용하여 제조된 편광자 및 편광판 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015108261A1 true WO2015108261A1 (ko) | 2015-07-23 |
Family
ID=53543117
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2014/009022 WO2015108261A1 (ko) | 2014-01-17 | 2014-09-26 | 국지적으로 편광 해소 영역을 갖는 편광자 제조 방법, 이를 이용하여 제조된 편광자 및 편광판 |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2015108261A1 (ko) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015215608A (ja) * | 2014-04-25 | 2015-12-03 | 日東電工株式会社 | 偏光子、偏光板および画像表示装置 |
JP2015215610A (ja) * | 2014-04-25 | 2015-12-03 | 日東電工株式会社 | 偏光子の製造方法 |
JP2015215609A (ja) * | 2014-04-25 | 2015-12-03 | 日東電工株式会社 | 偏光子、偏光板および画像表示装置 |
JP2016151603A (ja) * | 2015-02-16 | 2016-08-22 | 日東電工株式会社 | 偏光子、偏光板および画像表示装置 |
JP2017009908A (ja) * | 2015-06-25 | 2017-01-12 | 日東電工株式会社 | 偏光子 |
WO2017047510A1 (ja) * | 2015-09-16 | 2017-03-23 | シャープ株式会社 | 異形状偏光板の製造方法 |
US20170090085A1 (en) * | 2015-09-28 | 2017-03-30 | Nitto Denko Corporation | Polarizer, polarizing plate, and image display apparatus |
US20170090087A1 (en) * | 2015-09-28 | 2017-03-30 | Nitto Denko Corporation | Polarizer, polarizing plate, and image display apparatus |
JP2017067855A (ja) * | 2015-09-28 | 2017-04-06 | 日東電工株式会社 | 偏光子、偏光板および画像表示装置 |
JP2017068124A (ja) * | 2015-09-30 | 2017-04-06 | 日東電工株式会社 | 長尺状偏光子の検査方法 |
JP2017068122A (ja) * | 2015-09-30 | 2017-04-06 | 日東電工株式会社 | 長尺状偏光子の検査方法 |
JP2017068123A (ja) * | 2015-09-30 | 2017-04-06 | 日東電工株式会社 | 長尺状偏光子の検査方法 |
JP2017068121A (ja) * | 2015-09-30 | 2017-04-06 | 日東電工株式会社 | 偏光子の検査方法および偏光板の製造方法 |
JP2017068244A (ja) * | 2015-09-30 | 2017-04-06 | 日東電工株式会社 | 偏光板の検査方法および検査装置 |
JP2017068106A (ja) * | 2015-09-30 | 2017-04-06 | 日東電工株式会社 | 長尺状偏光子の検査方法、検査システムおよび製造方法 |
US10215901B2 (en) * | 2015-11-04 | 2019-02-26 | Nitto Denko Corporation | Polarizer, polarizing plate, and method of producing polarizer |
US10215900B2 (en) | 2014-06-27 | 2019-02-26 | Nitto Denko Corporation | Polarizing film laminate comprising a long polarizing having exposed portion where a polarizer is exposed |
US10336024B2 (en) | 2013-11-14 | 2019-07-02 | Nitto Denko Corporation | Polyvinyl alcohol based polarizing film containing iodine and boric acid |
JP2020126255A (ja) * | 2015-09-30 | 2020-08-20 | 日東電工株式会社 | 偏光子の検査方法および偏光板の製造方法 |
US10754072B2 (en) | 2014-06-27 | 2020-08-25 | Nitto Denko Corporation | Polarizer having non-polarization portions, a long polarizing plate and image display device comprising the polarizer |
CN114474691A (zh) * | 2022-01-18 | 2022-05-13 | 深圳市三利谱光电科技股份有限公司 | 偏光素子的制备方法以及偏光膜 |
US11467328B2 (en) | 2015-06-25 | 2022-10-11 | Nitto Denko Corporation | Polarizer having non-polarizing part |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20060084168A (ko) * | 2005-01-19 | 2006-07-24 | 주식회사 에이스 디지텍 | 투과성 및 내구성이 향상된 편광자의 제조방법, 편광자 및이를 구비한 표시장치 |
KR20100125558A (ko) * | 2009-05-21 | 2010-12-01 | 동우 화인켐 주식회사 | 편광격자 스크린의 제조방법, 편광격자 스크린 및 이것이 구비된 3차원 화상표시장치 |
KR20100125560A (ko) * | 2009-05-21 | 2010-12-01 | 동우 화인켐 주식회사 | 편광격자 스크린의 제조방법, 편광격자 스크린 및 이것이 구비된 3차원 화상표시장치 |
JP2011002816A (ja) * | 2009-05-01 | 2011-01-06 | Nitto Denko Corp | 偏光子の製造方法 |
JP2013167835A (ja) * | 2012-02-17 | 2013-08-29 | Nitto Denko Corp | 光学積層体及び光学積層体の製造方法 |
-
2014
- 2014-09-26 WO PCT/KR2014/009022 patent/WO2015108261A1/ko active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20060084168A (ko) * | 2005-01-19 | 2006-07-24 | 주식회사 에이스 디지텍 | 투과성 및 내구성이 향상된 편광자의 제조방법, 편광자 및이를 구비한 표시장치 |
JP2011002816A (ja) * | 2009-05-01 | 2011-01-06 | Nitto Denko Corp | 偏光子の製造方法 |
KR20100125558A (ko) * | 2009-05-21 | 2010-12-01 | 동우 화인켐 주식회사 | 편광격자 스크린의 제조방법, 편광격자 스크린 및 이것이 구비된 3차원 화상표시장치 |
KR20100125560A (ko) * | 2009-05-21 | 2010-12-01 | 동우 화인켐 주식회사 | 편광격자 스크린의 제조방법, 편광격자 스크린 및 이것이 구비된 3차원 화상표시장치 |
JP2013167835A (ja) * | 2012-02-17 | 2013-08-29 | Nitto Denko Corp | 光学積層体及び光学積層体の製造方法 |
Cited By (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10336024B2 (en) | 2013-11-14 | 2019-07-02 | Nitto Denko Corporation | Polyvinyl alcohol based polarizing film containing iodine and boric acid |
US11061176B2 (en) | 2014-04-25 | 2021-07-13 | Nitto Denko Corporation | Polarizer, polarizing plate, and image display apparatus |
JP2015215610A (ja) * | 2014-04-25 | 2015-12-03 | 日東電工株式会社 | 偏光子の製造方法 |
JP2015215609A (ja) * | 2014-04-25 | 2015-12-03 | 日東電工株式会社 | 偏光子、偏光板および画像表示装置 |
JP2015215608A (ja) * | 2014-04-25 | 2015-12-03 | 日東電工株式会社 | 偏光子、偏光板および画像表示装置 |
US10782462B2 (en) | 2014-04-25 | 2020-09-22 | Nitto Denko Corporation | Polarizer, polarizing plate, and image display apparatus |
US10754072B2 (en) | 2014-06-27 | 2020-08-25 | Nitto Denko Corporation | Polarizer having non-polarization portions, a long polarizing plate and image display device comprising the polarizer |
US11385391B2 (en) | 2014-06-27 | 2022-07-12 | Nitto Denko Corporation | Polarizer having non-polarization portions, a long polarizing plate and image display device comprising the polarizer |
US10215900B2 (en) | 2014-06-27 | 2019-02-26 | Nitto Denko Corporation | Polarizing film laminate comprising a long polarizing having exposed portion where a polarizer is exposed |
JP2016151603A (ja) * | 2015-02-16 | 2016-08-22 | 日東電工株式会社 | 偏光子、偏光板および画像表示装置 |
US10101511B2 (en) | 2015-02-16 | 2018-10-16 | Nitto Denko Corporation | Polarizer, polarizing plate, and image display apparatus |
US11467328B2 (en) | 2015-06-25 | 2022-10-11 | Nitto Denko Corporation | Polarizer having non-polarizing part |
JP2017009908A (ja) * | 2015-06-25 | 2017-01-12 | 日東電工株式会社 | 偏光子 |
US10503004B2 (en) | 2015-06-25 | 2019-12-10 | Nitto Denko Corporation | Polarizer |
WO2017047510A1 (ja) * | 2015-09-16 | 2017-03-23 | シャープ株式会社 | 異形状偏光板の製造方法 |
US20170090085A1 (en) * | 2015-09-28 | 2017-03-30 | Nitto Denko Corporation | Polarizer, polarizing plate, and image display apparatus |
JP2017067860A (ja) * | 2015-09-28 | 2017-04-06 | 日東電工株式会社 | 偏光子、偏光板および画像表示装置 |
JP2017067858A (ja) * | 2015-09-28 | 2017-04-06 | 日東電工株式会社 | 偏光子、偏光板および画像表示装置 |
US20170090087A1 (en) * | 2015-09-28 | 2017-03-30 | Nitto Denko Corporation | Polarizer, polarizing plate, and image display apparatus |
CN107144907A (zh) * | 2015-09-28 | 2017-09-08 | 日东电工株式会社 | 偏振片、偏光板和图像显示装置 |
JP2017067855A (ja) * | 2015-09-28 | 2017-04-06 | 日東電工株式会社 | 偏光子、偏光板および画像表示装置 |
US10234611B2 (en) | 2015-09-28 | 2019-03-19 | Nitto Denko Corporation | Polarizer, polarizing plate, and image display apparatus |
JP2017068106A (ja) * | 2015-09-30 | 2017-04-06 | 日東電工株式会社 | 長尺状偏光子の検査方法、検査システムおよび製造方法 |
JP2020126255A (ja) * | 2015-09-30 | 2020-08-20 | 日東電工株式会社 | 偏光子の検査方法および偏光板の製造方法 |
JP2017068244A (ja) * | 2015-09-30 | 2017-04-06 | 日東電工株式会社 | 偏光板の検査方法および検査装置 |
JP2017068121A (ja) * | 2015-09-30 | 2017-04-06 | 日東電工株式会社 | 偏光子の検査方法および偏光板の製造方法 |
JP2021012393A (ja) * | 2015-09-30 | 2021-02-04 | 日東電工株式会社 | 偏光板の検査方法および検査装置 |
JP2021012392A (ja) * | 2015-09-30 | 2021-02-04 | 日東電工株式会社 | 偏光板の検査方法および検査装置 |
JP2017068123A (ja) * | 2015-09-30 | 2017-04-06 | 日東電工株式会社 | 長尺状偏光子の検査方法 |
JP2017068122A (ja) * | 2015-09-30 | 2017-04-06 | 日東電工株式会社 | 長尺状偏光子の検査方法 |
JP2017068124A (ja) * | 2015-09-30 | 2017-04-06 | 日東電工株式会社 | 長尺状偏光子の検査方法 |
US10215901B2 (en) * | 2015-11-04 | 2019-02-26 | Nitto Denko Corporation | Polarizer, polarizing plate, and method of producing polarizer |
US10578786B2 (en) | 2015-11-04 | 2020-03-03 | Nitto Denko Corporation | Polarizer, polarizing plate, and method of producing polarizer |
CN114474691A (zh) * | 2022-01-18 | 2022-05-13 | 深圳市三利谱光电科技股份有限公司 | 偏光素子的制备方法以及偏光膜 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2015108261A1 (ko) | 국지적으로 편광 해소 영역을 갖는 편광자 제조 방법, 이를 이용하여 제조된 편광자 및 편광판 | |
WO2015147553A1 (ko) | 국지적으로 편광 해소 영역을 갖는 편광자 제조방법, 이를 이용하여 제조된 편광자, 편광판 및 화상표시장치 | |
WO2016003105A1 (ko) | 국지적으로 편광 해소 영역을 갖는 편광판 제조방법, 이를 이용하여 제조된 편광판 | |
WO2016056803A1 (ko) | 편광판의 제조방법 및 이를 이용하여 제조된 편광판 | |
JP6434020B2 (ja) | 局地的に偏光解消領域を有する偏光子の製造方法、これを用いて製造された偏光子および偏光板 | |
WO2015046969A1 (ko) | 국지적으로 편광 해소 영역을 갖는 편광판 및 그 제조 방법 | |
KR101828712B1 (ko) | 국지적으로 편광 해소 영역을 갖는 편광판 및 그 제조 방법 | |
WO2010087653A2 (ko) | 내구성 및 내열성이 우수한 편광소자, 편광판 및 화상표시장치 및 편광소자 제조방법 | |
WO2010090449A2 (ko) | 내구성 및 내열성이 우수한 편광소자, 편광판 및 화상표시장치 | |
WO2016195440A1 (ko) | 편광자의 제조방법 및 이를 이용하여 제조된 편광자 | |
WO2013094969A2 (ko) | 편광판 및 이를 구비한 화상표시장치 | |
WO2020040568A1 (ko) | 마스크 필름 및 이를 이용한 편광판의 제조방법 | |
WO2020040569A1 (ko) | 마스크 필름을 이용한 편광판의 제조방법 및 그 편광판 | |
WO2015046962A1 (ko) | 내츄럴 블랙에 근접한 편광판 제조 방법 및 이를 이용하여 제조된 편광판 | |
WO2014200296A1 (ko) | Uv 조사에 의해 편광자의 색상을 조절하는 단계를 포함하는 편광판 제조방법 | |
WO2022225288A1 (ko) | 편광자, 이를 포함하는 편광판 및 이를 포함하는 광학표시장치 | |
WO2022211398A1 (ko) | 편광판 및 이를 포함하는 광학표시장치 | |
WO2016052895A1 (ko) | 편광자의 제조방법 및 이를 이용하여 제조된 편광자 및 편광판 | |
WO2022030929A1 (ko) | 편광판 및 이를 포함하는 광학표시장치 | |
WO2020040570A1 (ko) | 마스크 필름 및 이를 이용한 편광판의 제조방법 | |
WO2022169260A1 (ko) | 편광판 및 이를 포함하는 광학표시장치 | |
WO2014200204A1 (ko) | 편광판 및 이를 구비한 화상표시장치 | |
WO2021182800A1 (ko) | 편광판 및 이를 포함하는 광학표시장치 | |
WO2012011678A2 (ko) | 편광자의 제조방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14878515 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2016531555 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14911240 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 14878515 Country of ref document: EP Kind code of ref document: A1 |