WO2014077599A1 - 박형 편광자의 제조 방법, 이를 이용하여 제조된 박형 편광자 및 편광판 - Google Patents
박형 편광자의 제조 방법, 이를 이용하여 제조된 박형 편광자 및 편광판 Download PDFInfo
- Publication number
- WO2014077599A1 WO2014077599A1 PCT/KR2013/010340 KR2013010340W WO2014077599A1 WO 2014077599 A1 WO2014077599 A1 WO 2014077599A1 KR 2013010340 W KR2013010340 W KR 2013010340W WO 2014077599 A1 WO2014077599 A1 WO 2014077599A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- film
- polyvinyl alcohol
- stretching
- thin polarizer
- laminate
- 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
- G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
- G02B5/305—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers
Definitions
- the present invention relates to a method of manufacturing a thin polarizer, a thin polarizer and a polarizing plate manufactured using the same, and more particularly, a method of manufacturing a thin polarizer having a thin thickness of 10 ⁇ m or less, a thin polarizer and a polarizing plate manufactured using the same. It is about.
- the polarizer used in the polarizing plate is an optical element for making natural light or arbitrary polarization into a polarized light in a specific direction, and is widely used in a display device such as a liquid crystal display device and an organic light emitting device (OLED).
- a polarizer used in the display device a polyvinyl alcohol polarizing film in which molecular chains containing an iodine compound or a dichroic dye are oriented in a constant direction is generally used.
- the polyvinyl alcohol polarizing film is prepared by a method of dyeing and crosslinking iodine or dichroic dye on a polyvinyl alcohol-based film, and stretching in a predetermined direction, wherein the stretching process is an aqueous solution of boric acid or an iodine solution. Wet drawing carried out in solution or dry drawing carried out in air, and the like, and the draw ratio is generally at least 5 times.
- stretching exceeds 60 micrometers.
- polarizers are also required to have a thinner thickness.
- a polyvinyl alcohol-based film having a thickness before stretching of more than 60 ⁇ m as in the prior art there is a limit in reducing the thickness of the polarizer. Therefore, studies have been attempted to fabricate thinner polarizers.
- Korean Laid-Open Patent Publication No. 2010-0071998 discloses a method of manufacturing a thin polarizer using a laminate prepared by coating a hydrophilic polymer layer on a substrate layer or co-extrusion of a substrate layer forming material and a hydrophilic polymer layer forming material. It is.
- the separation of the polyvinyl alcohol layer and the base layer is not easy after stretching and a high peel force is required for the separation, the polyvinyl alcohol layer is damaged or deformed during the separation process. Problems tend to occur, and as a result, there is a problem that optical properties such as polarization degree of the polyvinyl alcohol film are inferior.
- the polyvinyl alcohol resin is manufactured by melting and extruding the polyvinyl alcohol resin or by applying the coating solution after coating and then applying the polyvinyl alcohol according to extrusion conditions, coating conditions or film forming conditions.
- the physical properties of the film tend to change, and not only the physical properties of the finally produced polyvinyl alcohol are lowered, but also it is difficult to realize uniform physical properties.
- Japanese Laid-Open Patent Publication No. 2012-118521 discloses a method of manufacturing a thin polarizer by bonding a polyvinyl alcohol film to one side of a base film using a polyvinyl alcohol-based water-based adhesive and stretching the film.
- a polyvinyl alcohol-based water-based adhesive used in this manner, a large amount of fine wrinkles in the form of cracks are generated on the surface due to the difference in the swelling degree of the base film and the polyvinyl alcohol film, and the curling becomes severe before stretching.
- instability increased and breakage was likely to occur during the stretching process.
- the base film and the polyvinyl alcohol film were stretched after being attached with an adhesive agent, the side portion curling phenomenon occurred after the stretching.
- the present invention is to solve the above problems, to provide a method of manufacturing a thin polarizer with excellent optical properties and high process stability.
- the present invention comprises the steps of: attaching an unstretched polyvinyl alcohol-based film having a thickness of 10 to 60 ⁇ m to at least one surface of the unstretched base film by a force to form a film laminate; And stretching the film laminate such that the polyvinyl alcohol-based film has a thickness of 10 ⁇ m or less.
- the base film may be a polymer film having a maximum draw ratio of 5 times or more, for example, a high density polyethylene film, a polyurethane film, a polypropylene film, a polyolefin film, an ester film, a low density polyethylene film, a high density polyethylene, and a low density It may be at least one selected from the group consisting of polyethylene coextrusion film, copolymer resin containing ethylene vinyl acetate in high density polyethylene, acrylic film, polyethylene terephthalate film, polyvinyl alcohol film and cellulose film.
- the attractive force between the unstretched base film and the unstretched polyvinyl alcohol-based film is preferably about 0.1 to 2N / 2 cm.
- the stretching of the film laminate may be performed by dry stretching or wet stretching, and preferably, a stretching ratio of 5 to 15 times may be performed at a temperature of 20 ° C to 85 ° C.
- the stretching of the film laminate may be performed in an aqueous boric acid solution.
- the method may further include dyeing at least one of iodine and dichroic dye on the film laminate before the stretching step.
- the thin polarizer manufacturing method of the present invention may further comprise the step of separating the polyvinyl alcohol-based film from the base film after the step of stretching the film laminate.
- the separating of the polyvinyl alcohol-based film from the base film may be performed by applying a peel force of 2N / 2cm or less.
- the present invention provides a thin polarizer having a thickness of 10 ⁇ m or less, a single transmittance of 40 to 45%, a polarization degree of 99% or more, and a polarizing plate including the same.
- a thin polarizer having a thickness of 10 ⁇ m or less having excellent optical characteristics can be manufactured in a stable process.
- 1 is a schematic diagram showing a method for measuring adhesion using a texture analyzer (Texture Analyzer).
- FIG. 2 is a view showing a state of a film laminate prepared according to the method of Comparative Example 1.
- FIG. 7 is a photograph showing a side portion curl phenomenon after stretching of the film laminate of Comparative Example 4.
- the present inventors have long been studied to produce a polarizer having no optical breakage at 10 ⁇ m or less and excellent optical properties in the manufacturing process, and as a result, a polyvinyl alcohol-based film is used on a base film without an adhesive or the like. It was found that the above object can be achieved by attaching with a weak attraction force between the films, and then drawing it.
- a step of forming a film laminate by attaching a non-stretched polyvinyl alcohol-based film having a thickness of 10 to 60 ⁇ m to at least one surface of the unstretched base film by attraction. ; And stretching the film laminate such that the polyvinyl alcohol-based film has a thickness of 10 ⁇ m or less.
- the unstretched polyvinyl alcohol-based film is attached onto the unstretched base film with no attraction through a manpower to form a film laminate.
- the base film and the polyvinyl alcohol-based film may be attached by a weak attraction generated on the surface of the base film and the unstretched polyvinyl alcohol-based film without a separate medium, the base film and the unstretched polyvinyl alcohol-based
- the attraction between the films is not limited thereto, but is preferably 2 N / 2 cm or less, preferably about 0.1 to 2 N / 2 cm, and more preferably about 0.1 to 1 N / 2 cm.
- the attraction force between the base film and the unstretched polyvinyl alcohol film satisfies the above range, the base film and the unstretched polyvinyl alcohol-based film are not separated in the stretching process, and surface damage can be minimized during the separation process after stretching. to be.
- the attraction force is an adhesive force measured when 2 cm long sample films are attached, and a specific measuring method is illustrated in FIG. 1.
- the adhesion between the films as shown in Figure 1, after fixing the polyvinyl alcohol film (A) of the film laminate with a sample holder (H), with respect to the surface direction of the film laminate Peel strength measured while peeling the polyvinyl alcohol film (A) from the base film (B) by applying a force in a vertical direction, wherein the measuring instrument is a texture analyzer (Model name: TA-) of Stable Micro Systems XT Plus) was used.
- surface treatment may be performed on one or both sides of the base film or polyvinyl alcohol-based film.
- the surface treatment may be performed through various surface treatment methods well known in the art, for example, corona treatment, plasma treatment, or surface modification treatment using a strong base aqueous solution such as NaOH or KOH.
- the unstretched polyvinyl alcohol-based film may be attached to one side or both sides of the unstretched base film.
- a polyvinyl alcohol-based film is attached to both sides of the unstretched base film.
- the polyvinyl alcohol-based film is attached to both sides of the base film, it is easier to balance the tension and the modulus acting per unit area in the stretching process than in the case where the polyvinyl alcohol-based film is attached only to one side, and thus the process stability is excellent.
- two thin polarizers can be obtained in one step, thereby improving productivity.
- the unstretched base film is to prevent the polyvinyl alcohol-based film from breaking in the stretching process, preferably, may be a polymer film having a maximum draw ratio of 5 times or more under a temperature condition of 20 °C to 85 °C.
- the maximum draw ratio means a draw ratio immediately before breakage occurs.
- the stretching may be dry stretching or wet stretching, in the case of wet stretching, the stretching ratio in the case of stretching in an aqueous boric acid solution having a boric acid concentration of 1.0 to 5% by weight.
- Such base films include, but are not limited to, high density polyethylene films, polyurethane films, polypropylene films, polyolefin films, ester films, low density polyethylene films, high density polyethylene and low density polyethylene coextrusion films, high density polyethylene, for example.
- the unstretched polyvinyl alcohol-based film attached to the base film has a thickness of about 10 to 60 ⁇ m, preferably about 10 to 40 ⁇ m.
- the thickness of the polyvinyl alcohol-based film exceeds 60 ⁇ m, it is difficult to achieve a thickness of 10 ⁇ m or less even when stretched, when the thickness is less than 10 ⁇ m tends to break during stretching.
- the polyvinyl alcohol-based film is not limited to this, but the degree of polymerization is preferably about 1,000 to 10,000, preferably 1,500 to 5,000. This is because when the degree of polymerization satisfies the above range, the molecular motion is free and can be mixed flexibly with iodine or dichroic dye.
- polyvinyl alcohol-based film of the present invention a commercially available polyvinyl alcohol-based film may be used.
- Gurere's PE20, PE30, PE60, Japan Synthetic's M2000, M3000 M6000, and the like may be used.
- the stretching is preferably carried out so that the thickness of the polyvinyl alcohol-based film is less than 10 ⁇ m, for example, the thickness of the polyvinyl alcohol-based film is 1 ⁇ m to 10 ⁇ m, 3 ⁇ m to 10 ⁇ m or 1 ⁇ m It is preferable to carry out so that it becomes about 5 micrometers.
- the stretching conditions are not particularly limited, for example, the stretching may be carried out at a draw ratio of 5 times to 15 times at a temperature of 20 °C to 85 °C, more preferably 40 It may be carried out at a draw ratio of 5 to 12 times at a temperature of °C to 80 °C.
- the stretching may be performed by wet stretching or dry stretching.
- the wet stretching is more preferable since the surface adhesion of the base film and the polyvinyl alcohol-based film becomes stronger than the dry stretching.
- the wet stretching is preferably carried out in an aqueous boric acid solution, wherein the boric acid concentration of the aqueous boric acid solution is preferably about 1.0 to 5.0 wt%.
- the manufacturing process of the polarizing element is a process of washing with water, swelling, dyeing, washing, stretching, complementary color, drying and the like
- the washing and stretching process is preferably carried out in an aqueous boric acid solution.
- the boric acid concentration may be about 0.1 to 2.5 wt%, preferably about 0.5 to 2.0 wt%
- the boric acid concentration is about 1.0 to 5.0 wt%, preferably 1.5 to It may be about 4.5 wt%.
- the stretching step at least one of the step of dyeing iodine and / or dichroic dye on the polyvinyl alcohol-based film and / or cross-linking the dyed iodine and / or dichroic dye to the polyvinyl alcohol-based film It may be performed together with the above steps.
- the dyeing, crosslinking and stretching processes can be performed simultaneously.
- the laminated film on which the dyeing is completed is immersed in an aqueous solution of boric acid, and stretching is performed in an aqueous solution of boric acid.
- the crosslinking step and the stretching step may be performed together.
- the drying is preferably 20 °C to 100 °C, more preferably about 40 to 90 °C degree, it is preferably carried out for 1 to 10 minutes at the above temperature.
- the drying process prevents the PVA polarizer from deteriorating the physical properties of the PVA polarizer by water removal during the production of the PVA surface and the inside and smoothly induces the shrinkage of the polyvinyl alcohol film stretched during the drying process. It serves to improve the polarization degree of the polarizer by increasing the orientation of the complex composed of iodine.
- the step of separating the polyvinyl alcohol-based film and the base film may be further carried out.
- the separating step may be performed by applying a peel force to the polyvinyl alcohol-based film or the base film to leave both films.
- the peel force is preferably 2N / 2cm or less, for example, may be 0.1 to 2N / 2cm, 0.1 to 1N / 2cm or so.
- the base film and the polyvinyl alcohol-based film are attached with a weak attraction force without a medium such as an adhesive, the polyvinyl alcohol-based film and the base film are cleanly separated.
- the peel force required to separate the polyvinyl alcohol-based film and the base film is very weak. Not only can the film be easily separated, but also the damage of the polyvinyl alcohol-based film in the separation process shows very good optical performance.
- a polyvinyl alcohol polarizer having a thickness of 10 ⁇ m or less is obtained.
- a polyvinyl alcohol-type film is affixed on both surfaces of a base film, two thin polarizers can be obtained by one process.
- the polarizer of the present invention produced by the above method is very thin, the thickness of 10 ⁇ m or less, for example, 1 ⁇ m to 10 ⁇ m, 3 ⁇ m to 10 ⁇ m or 1 ⁇ m to 5 ⁇ m, even in this thin thickness ,
- the single transmittance is about 40 to 45%, the polarization degree is 99.0% or more, 99.5% or more, more preferably 99.7% or more, very excellent optical properties.
- the present invention provides a polarizing plate comprising a thin polarizer manufactured by the above method.
- the polarizing plate of the present invention may be formed by laminating a transparent film on one or both surfaces of the thin polarizer of the present invention.
- various films used in the art as a polarizer protective film or a retardation film may be used without limitation, for example, polyester polymer, styrene polymer, cellulose polymer, polyether sulfone type Polymer, polycarbonate polymer, acrylic polymer, polyolefin polymer, polyamide polymer, polyimide polymer, sulfone polymer, polyether sulfone polymer, polyether ether ketone polymer, polyphenylene sulfide polymer, vinyl Films comprising at least one selected from the group consisting of alcohol polymers, vinylidene chloride polymers, vinyl butyral polymers, arylate polymers, polyoxy methylene polymers, epoxy polymers and mixtures of these polymers can be used. .
- the method of laminating the polarizer and the transparent film is not particularly limited, and may be performed using an adhesive or an adhesive well known in the art.
- the pressure-sensitive adhesive or adhesive may be appropriately selected in consideration of the material of the transparent film to be used, for example, when using a TAC as a transparent film, an aqueous adhesive such as a polyvinyl alcohol-based adhesive may be used, When using an acrylic film, a COP film, etc. as a transparent film, photocuring or thermosetting adhesives, such as an acrylic adhesive and an epoxy adhesive, can be used.
- the polarizing plate of the present invention may further include an adhesive layer on the thin polarizer or the transparent film of the present invention.
- the pressure-sensitive adhesive layer is well-known pressure-sensitive adhesive compositions, for example, acrylic copolymer, epoxy resin, polyurethane resin, silicone resin, polyether resin, polyamide resin and polyvinyl alcohol-based At least one pressure-sensitive adhesive composition selected from the group consisting of resins may be applied on a polarizer or a transparent film and then cured by irradiation with light or heat.
- the polarizing plate of the present invention is formed on a polyvinyl alcohol polarizer having a thickness of 10 ⁇ m or less, a transparent film attached to at least one surface of the polyvinyl alcohol polarizer via an adhesive layer and the polarizer or the transparent film. It may include a pressure-sensitive adhesive layer.
- the polarizing plate of the present invention is formed on a polyvinyl alcohol polarizer having a thickness of 10 ⁇ m or less, a transparent film attached to one surface of the polyvinyl alcohol polarizer via an adhesive layer and the other surface of the polyvinyl alcohol polarizer. It may include a pressure-sensitive adhesive layer.
- a primer layer or an adhesive layer may be further included between the adhesive layer and the polyvinyl alcohol-based polarizer and / or between the adhesive layer and the transparent film.
- a film laminate was formed by laminating 30 ⁇ m PVA films of M3000 grade manufactured by Nippon Synthetic Co., Ltd. on both sides of a 60 ⁇ m-thick thermoplastic polyurethane substrate.
- the film laminate was swelled in a 25 ° C. pure solution for 15 seconds and then dyed for 60 seconds in a 0.3 wt% concentration and 25 ° C. iodine solution. Thereafter, after washing for 15 seconds in a solution of 1 wt% boric acid and 25 ° C., a 7-fold stretching process was performed in a solution of 2.5 wt% boric acid and 52 ° C. After stretching, the process was complementary in a 5 wt% KI solution, followed by drying in an 80 ° C.
- PVA film (M-grade, Nippon Synthetic Co., Ltd., average polymerization degree: 2400 average saponification degree: 99mol%) was dissolved in 100 ° C pure water to form a PVA aqueous solution, and then a lip coater was placed on a 200 ⁇ m-thick PET (NOVA-Clear SG007 grade of MCC). It was coated using and dried for 10 minutes in an oven at 80 °C to form a film with a PVA coating layer. At this time, the thickness of the PVA coating layer was 10 ⁇ m. The film was subjected to a swelling process for 15 seconds in a 25 ° C.
- PVA film (M-grade, Nippon Synthetic Co., Ltd., average polymerization degree: 2400 average saponification degree: 99mol%) was dissolved in 100 ° C pure water to form a PVA aqueous solution, and then a lip coater was placed on a 200 ⁇ m-thick PET (NOVA-Clear SG007 grade of MCC). It was coated using and dried for 10 minutes in an oven at 80 °C to form a film with a PVA coating layer. At this time, the thickness of the PVA coating layer was 10 ⁇ m. The film was subjected to a swelling process in a 1.0 wt% aqueous solution of boric acid at 25 ° C.
- Ts The simple transmittance (Ts), orthogonal transmittance (Tc), polarization degree (DOP), simple color a, b and orthogonal colors a and b of the thin polarizer prepared by the Example and the thin polarizer prepared by Comparative Example 2 were obtained by JASCO. Measurement was made with a V-7100 Spectrophotometer. The measurement results are shown in the following [Table 1].
- M3000 grade 30 ⁇ m PVA film manufactured by Nippon Synthetic Co., Ltd. was prepared using a polyvinyl alcohol adhesive (solid content 4 wt%, trade name: JC25, manufacturer: JAPAN VAM & POVAL Co., Ltd.) on both sides of a 60 ⁇ m thick thermoplastic polyurethane substrate film. It laminated
- the film laminate was swelled in a 25 ° C. pure solution for 15 seconds and then dyed for 60 seconds in a 0.3 wt% concentration and 25 ° C. iodine solution. Thereafter, after washing for 15 seconds in a solution of 1 wt% boric acid and 25 ° C., a 7-fold stretching process was performed in a solution of 2.5 wt% boric acid and 52 ° C.
- FIG. 3 shows the surface state immediately after attaching the PVA film to the base film with the PVA adhesive
- FIG. 4 shows the curling phenomenon of the film laminate.
- 5 and 6 are photographs showing the state of the film laminate of Comparative Example 3 in the cleaning process and the stretching process, respectively.
- the film laminate of Comparative Example 3 had a phenomenon in which the PVA film broke during the cleaning and stretching process. This is believed to be due to stress caused by the base film and the PVA film having different swelling ratios forcibly attached by the adhesive.
- M3000 grade 30 ⁇ m PVA film manufactured by Nippon Synthetic Co., Ltd. was prepared using a polyvinyl alcohol adhesive (solid content 4 wt%, trade name: JC25, manufacturer: JAPAN VAM & POVAL Co., Ltd.) on both sides of a 60 ⁇ m thick thermoplastic polyurethane substrate film. It laminated
- the film laminate was swelled in a 25 ° C. pure solution for 15 seconds and then dyed for 60 seconds in a 0.3 wt% concentration and 25 ° C. iodine solution. Thereafter, 1 wt% boric acid and a washing process for 15 seconds in a 25 °C solution, and then a 6-fold stretching process in a 2.5 wt% boric acid, 52 °C solution. After stretching, the process was complementary in a 5 wt% KI solution, followed by drying in an 80 ° C. oven for 5 minutes. Then, the polyurethane base film was held, and the base film and the polyvinyl alcohol-based film were separated with a peel force of 2.3 N / 2 cm to finally prepare a thin polarizer having a thickness of 8.7 ⁇ m.
- FIGS. 7 and 8 are photographs showing a state after stretching of the film laminate of the embodiment.
- the film laminate of Comparative Example 4 had side curl after stretching, whereas this phenomenon did not occur in the film laminate of Examples.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
Description
구분 | Ts(% | Tc(%) | DOP(%) | 단체 색상 | 직교 색상 | ||
a | b | a | b | ||||
실시예 | 42.55 | 0.0647 | 99.8275 | -0.03 | 2.05 | 2.40 | -1.41 |
비교예2 | 34.97 | 0.1259 | 99.4971 | -0.07 | 0.56 | 2.12 | -3.01 |
Claims (12)
- 미연신 기재 필름의 적어도 일면에 두께가 10 내지 60㎛인 미연신 폴리비닐알코올계 필름을 인력으로 부착하여 필름 적층체를 형성하는 단계; 및상기 폴리비닐알코올계 필름의 두께가 10㎛ 이하가 되도록 상기 필름 적층체를 연신하는 단계를 포함하는 박형 편광자의 제조 방법.
- 제1항에 있어서,상기 기재 필름은 최대 연신 배율이 5배 이상인 고분자 필름인 것인 박형 편광자의 제조 방법.
- 제1항에 있어서,상기 기재 필름은 고밀도 폴리에틸렌 필름, 폴리우레탄 필름, 폴리프로필렌 필름, 폴리올레핀 필름, 에스테르계 필름, 저밀도 폴리에틸렌 필름, 고밀도 폴리에틸렌 및 저밀도 폴리에틸렌 공압출 필름, 고밀도 폴리에틸렌에 에틸렌 비닐아세테이트가 함유된 공중합체 수지, 아크릴 필름, 폴리에틸렌테레프탈레이트 필름, 폴리비닐알코올계 필름 및 셀룰로오스계 필름으로 이루어진 군으로부터 선택된 1종 이상인 박형 편광자의 제조 방법.
- 제1항에 있어서,상기 미연신 기재 필름과 미연신 폴리비닐알코올계 필름 사이의 인력은 0.1 내지 2N/2cm인 것인 박형 편광자의 제조 방법.
- 제1항에 있어서,상기 필름 적층체를 연신하는 단계는 습식 연신으로 수행되는 것인 박형 편광자의 제조 방법.
- 제1항에 있어서,상기 필름 적층체를 연신하는 단계는 20℃ 내지 85℃의 온도에서 5배 내지 15배의 연신 배율로 수행되는 것인 박형 편광자의 제조 방법.
- 제1항에 있어서,상기 연신 단계 전에 상기 필름 적층체에 요오드 및 이색성 염료 중 적어도 하나를 염착시키는 단계를 더 포함하는 박형 편광자의 제조 방법.
- 제1항에 있어서,상기 필름 적층체를 연신하는 단계는 붕산 수용액 내에서 수행되는 것인 박형 편광자의 제조 방법.
- 제1항에 있어서,상기 필름 적층체를 연신하는 단계 이후에 폴리비닐알코올계 필름을 기재 필름으로부터 분리하는 단계를 더 포함하는 박형 편광자의 제조 방법.
- 제9항에 있어서,상기 폴리비닐알코올계 필름을 기재 필름으로부터 분리하는 단계는 2N/2cm 이하의 박리력을 가하여 수행되는 것인 박형 편광자의 제조 방법.
- 청구항 1 내지 청구항 10 중 어느 한 항의 방법으로 제조되며,두께가 10㎛ 이하이고, 단체 투과도 40 ~ 45%이며, 편광도가 99% 이상인 박형 편광자.
- 청구항 11의 박형 편광자를 포함하는 편광판.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380003123.4A CN103959111B (zh) | 2012-11-16 | 2013-11-14 | 薄偏振片的制备方法、薄偏振片和包括该薄偏振片的偏振板 |
US14/342,778 US9304239B2 (en) | 2012-11-16 | 2013-11-14 | Preparing method for thin polarizer, thin polarizer and polarizing plate comprising the same |
JP2014548705A JP6052522B2 (ja) | 2012-11-16 | 2013-11-14 | 薄型偏光子の製造方法 |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20120130576 | 2012-11-16 | ||
KR10-2012-0130576 | 2012-11-16 | ||
KR20120130577 | 2012-11-16 | ||
KR10-2012-0130577 | 2012-11-16 | ||
KR1020130137456A KR101498822B1 (ko) | 2012-11-16 | 2013-11-13 | 박형 편광자의 제조 방법, 이를 이용하여 제조된 박형 편광자 및 편광판 |
KR10-2013-0137456 | 2013-11-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014077599A1 true WO2014077599A1 (ko) | 2014-05-22 |
Family
ID=50731444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2013/010340 WO2014077599A1 (ko) | 2012-11-16 | 2013-11-14 | 박형 편광자의 제조 방법, 이를 이용하여 제조된 박형 편광자 및 편광판 |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2014077599A1 (ko) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2839955A1 (en) * | 2013-06-18 | 2015-02-25 | LG Chem, Ltd. | Stretched laminated body, method for manufacturing thin polarizer, thin polarizer manufactured thereby and polarizing plate containing same |
JP2016071348A (ja) * | 2014-09-30 | 2016-05-09 | 住友化学株式会社 | 偏光板、液晶表示装置及び有機エレクトロルミネッセンス表示装置 |
US10088705B2 (en) | 2014-09-30 | 2018-10-02 | Nitto Denko Corporation | Method for producing polarizing film |
CN114479749A (zh) * | 2021-12-27 | 2022-05-13 | 恒美光电股份有限公司 | 一种uv胶、偏光片及其制备方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20070074642A (ko) * | 2004-10-29 | 2007-07-12 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | 광학체 및 광학체 제조 방법 |
JP2009042632A (ja) * | 2007-08-10 | 2009-02-26 | Goyo Paper Working Co Ltd | 光学シートの積層体 |
KR20090051400A (ko) * | 2007-11-19 | 2009-05-22 | 엘지전자 주식회사 | 광학시트 패키지 |
KR20090101762A (ko) * | 2008-03-24 | 2009-09-29 | 동우 화인켐 주식회사 | 초박형 편광판 및 이를 구비한 액정표시장치 |
KR20110118825A (ko) * | 2009-03-05 | 2011-11-01 | 닛토덴코 가부시키가이샤 | 박형 고기능 편광막 및 그 제조방법 |
-
2013
- 2013-11-14 WO PCT/KR2013/010340 patent/WO2014077599A1/ko active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20070074642A (ko) * | 2004-10-29 | 2007-07-12 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | 광학체 및 광학체 제조 방법 |
JP2009042632A (ja) * | 2007-08-10 | 2009-02-26 | Goyo Paper Working Co Ltd | 光学シートの積層体 |
KR20090051400A (ko) * | 2007-11-19 | 2009-05-22 | 엘지전자 주식회사 | 광학시트 패키지 |
KR20090101762A (ko) * | 2008-03-24 | 2009-09-29 | 동우 화인켐 주식회사 | 초박형 편광판 및 이를 구비한 액정표시장치 |
KR20110118825A (ko) * | 2009-03-05 | 2011-11-01 | 닛토덴코 가부시키가이샤 | 박형 고기능 편광막 및 그 제조방법 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2839955A1 (en) * | 2013-06-18 | 2015-02-25 | LG Chem, Ltd. | Stretched laminated body, method for manufacturing thin polarizer, thin polarizer manufactured thereby and polarizing plate containing same |
EP2839955A4 (en) * | 2013-06-18 | 2016-02-24 | Lg Chemical Ltd | SCREEN COATED BODY, METHOD FOR PRODUCING A THIN POLARIZER, THIN POLARIZER PRODUCED IN THIS PROCESS, AND POLARIZING PLATE THEREWITH |
US9662865B2 (en) | 2013-06-18 | 2017-05-30 | Lg Chem, Ltd. | Stretched laminate, method of manufacturing thin polarizer, thin polarizer manufactured by the method, and polarizing plate including the thin polarizer |
JP2016071348A (ja) * | 2014-09-30 | 2016-05-09 | 住友化学株式会社 | 偏光板、液晶表示装置及び有機エレクトロルミネッセンス表示装置 |
US10088705B2 (en) | 2014-09-30 | 2018-10-02 | Nitto Denko Corporation | Method for producing polarizing film |
CN114479749A (zh) * | 2021-12-27 | 2022-05-13 | 恒美光电股份有限公司 | 一种uv胶、偏光片及其制备方法 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101498822B1 (ko) | 박형 편광자의 제조 방법, 이를 이용하여 제조된 박형 편광자 및 편광판 | |
WO2012074233A2 (ko) | 편광판 및 이의 제조방법 | |
WO2014109489A1 (ko) | 액정표시장치 | |
WO2014077599A1 (ko) | 박형 편광자의 제조 방법, 이를 이용하여 제조된 박형 편광자 및 편광판 | |
WO2014204134A1 (ko) | 박형 편광판 및 그의 제조 방법 | |
WO2014204150A1 (ko) | 연신 적층체, 박형 편광자의 제조 방법, 이를 이용하여 제조되는 박형 편광자 및 이를 포함하는 편광판 | |
KR20190133203A (ko) | 광학 필름, 박리 방법 및 광학 표시 패널의 제조 방법 | |
WO2014208861A1 (ko) | 폴리엔 편광자, 이의 제조방법, 이를 포함하는 편광판 및 광학표시장치 | |
WO2016052954A1 (ko) | 박형 편광자의 제조방법, 및 이를 이용하여 제조된 박형 편광자 | |
WO2012002662A2 (ko) | 편광자의 제조방법 | |
WO2015199379A1 (ko) | 초박형 편광판 및 이를 구비하는 액정표시장치 | |
JP2003240953A (ja) | 偏光板 | |
KR102288391B1 (ko) | 편광 필름의 제조 방법 | |
WO2019045257A1 (ko) | 아크릴 필름 | |
JP2017182021A (ja) | 偏光フィルムの製造方法、積層フィルム | |
CN108780180B (zh) | 带透明树脂层的单侧保护偏振膜的制造方法、带粘合剂层的偏振膜的制造方法、及图像显示装置的制造方法 | |
KR101632473B1 (ko) | 편광자의 제조 방법, 이를 이용하여 제조되는 편광자 및 이를 포함하는 편광판 | |
KR101604179B1 (ko) | 박형 편광자의 제조방법, 이를 이용하여 제조된 박형 편광자 및 편광판 | |
US10101513B2 (en) | Method for manufacturing thin polarizer, thin polarizer manufactured using same, and polarizing plate | |
WO2015046936A1 (ko) | 광학 필름 및 그 제조방법 | |
WO2014112724A1 (ko) | 편광자의 제조 방법 | |
WO2015046858A1 (ko) | 박형 편광자의 제조 방법, 이를 이용하여 제조된 박형 편광자 및 편광판 | |
WO2019045236A1 (ko) | 아크릴 필름 | |
WO2021167282A1 (ko) | 편광자, 편광판 및 이를 포함하는 광학표시장치 | |
WO2015099267A1 (ko) | 광학 물성이 우수한 박형 편광자, 그 제조 방법 및 이를 포함하는 편광판 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 14342778 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2014548705 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13855427 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13855427 Country of ref document: EP Kind code of ref document: A1 |