KR102281268B1 - Nano-column having dendron structur, manufacturing method for two-axis film using the same and two-axis film comprising the same - Google Patents
Nano-column having dendron structur, manufacturing method for two-axis film using the same and two-axis film comprising the same Download PDFInfo
- Publication number
- KR102281268B1 KR102281268B1 KR1020200005970A KR20200005970A KR102281268B1 KR 102281268 B1 KR102281268 B1 KR 102281268B1 KR 1020200005970 A KR1020200005970 A KR 1020200005970A KR 20200005970 A KR20200005970 A KR 20200005970A KR 102281268 B1 KR102281268 B1 KR 102281268B1
- Authority
- KR
- South Korea
- Prior art keywords
- dendron
- column
- nano
- liquid crystal
- nematic
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
- G02F1/133636—Birefringent elements, e.g. for optical compensation with twisted orientation, e.g. comprising helically oriented LC-molecules or a plurality of twisted birefringent sublayers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/005—Shaping by stretching, e.g. drawing through a die; Apparatus therefor characterised by the choice of materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K19/54—Additives having no specific mesophase characterised by their chemical composition
- C09K19/56—Aligning agents
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
- G02F1/1396—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Liquid Crystal Substances (AREA)
- Polarising Elements (AREA)
Abstract
Description
본 발명은 덴드론 구조의 나노컬럼, 이를 이용한 2축 필름 제조방법 및 이를 포함하는 2축 필름에 관한 것으로, 보다 상세하게는 네마틱 중합성 액정 내에서 배향되며, 수직적인 광축을 갖는 나노컬럼을 형성시켜 광학필름의 생산공정을 간소화하여 연속공정이 가능한, 덴드론 구조의 나노컬럼, 이를 이용한 2축 필름 제조방법 및 이를 포함하는 2축 필름에 관한 것이다.The present invention relates to a nano-column having a dendron structure, a method for manufacturing a biaxial film using the same, and a biaxial film including the same, and more particularly, to a nano-column oriented in a nematic polymerizable liquid crystal and having a vertical optical axis. It relates to a nano-column having a dendron structure that can be formed to simplify the production process of an optical film to allow a continuous process, a method for manufacturing a biaxial film using the same, and a biaxial film including the same.
지금까지 사용되는 전자 디스플레이 중 가장 대표적인 것은 TV나 컴퓨터 모니터 등에 사용되고 있는 CRT(Cathode Ray Tube)를 들 수 있다. 그러나 현재 CRT는 그 부피나 중량 때문에 휴대가 곤란하고 소비전력이 높으며 높은 구동 전압으로 인한 사용상의 제약이 많은 편이기 때문에 그 한계를 극복하기 위한 다양한 평판 표시소자의 개발이 진행되고 있다. LCD(Liquid Crystal Display), FED(Field Emission Display), ELD(ElectroluminesceDisplay) 등이 대표적인 평판 표시소자들이며, 이중 현재 가장 대표적인 것이 LCD이다. 액정과 반도체 기술이 복합된 기술 집약적 품목인 LCD는 얇고, 가벼우며 소비 전력이 낮은 장점으로 인해 여타 다른 표시소자가 넘보기 힘든 강점이 있다. Among the electronic displays used so far, the most representative example is a cathode ray tube (CRT) used for a TV or a computer monitor. However, the current CRT is difficult to carry due to its volume and weight, consumes high power, and has many limitations in use due to high driving voltage. Therefore, various flat panel display devices are being developed to overcome the limitations. LCD (Liquid Crystal Display), FED (Field Emission Display), ELD (Electroluminesce Display), etc. are representative flat panel display devices, and among them, LCD is currently the most representative. LCD, which is a technology-intensive item that combines liquid crystal and semiconductor technology, has strengths that other display devices cannot overcome due to its thin, light, and low power consumption.
고품질의 대형 LCD를 실현하기 위해서는 LCD의 광시야각, 고휘도, 높은 대조(Contrast), 고속응답 속도가 요구된다. 기존에는 광시야각 LCD로 디스코틱 액정(Discotic LC) 필름을 광학보상한 TN 방식이 널리 사용되어 왔는데 여전히 계조(Gradation) 반전이나 컬러 시프트(Color shift), 응답 속도 등의 문제를 안고 있다. 이러한 점에서 LCD의 시야각 특성에 대한 개선점은 고품질 LCD를 실현하는데 매우 중요한 과제이다. In order to realize a high-quality large-size LCD, LCD's wide viewing angle, high brightness, high contrast, and high-speed response are required. In the past, the TN method, which optically compensated the discotic LC film for a wide viewing angle LCD, has been widely used, but it still has problems such as gradation inversion, color shift, and response speed. In this regard, improving the viewing angle characteristics of the LCD is a very important task for realizing a high-quality LCD.
최근에는 수직 배향 액정을 사용하는 VA(Vertically Aligned) 방식, 횡전계를 사용하는 IPS(In-Plane Switching) 방식, 그리고 Bend Aligned LC를 사용하는 OCB (Optically Compensated Bend)방식 등 새로운 액정 표시 방식이 개발되면서 LCD 시야각 특성은 비약적으로 발전하고 있다.Recently, new liquid crystal display methods such as VA (Vertical Aligned) method using vertically aligned liquid crystal, IPS (In-Plane Switching) method using transverse electric field, and OCB (Optically Compensated Bend) method using bend aligned LC have been developed. LCD viewing angle characteristics are developing rapidly.
한편, 액정디스플레이 제조 공정에서 배향막 코팅 및 배향처리는 공정상 최대의 난제로 지목되고 있으며 배향막 종류의 개선뿐 아니라 배향방법에 있어서도 적극적인 개선 노력이 진행되고 있다. 뿐만 아니라, 최근 대형화면 TFT-LCD를 TV로서 상용화하기 위한 중요한 요구 특성 중의 하나로서 광 시야각화가 요구되고 있다. 시야각을 확대하기 위한 방법으로 보상 필름에 대한 연구와 함께 광 시야각용 구동방법에 대한 연구가 수행되고 있다.On the other hand, in the liquid crystal display manufacturing process, alignment layer coating and alignment treatment are pointed out as the biggest difficulties in the process, and active improvement efforts are being made not only in the type of alignment layer but also in the alignment method. In addition, a wide viewing angle is required as one of the important characteristics required to commercialize a large-screen TFT-LCD as a TV in recent years. As a method for expanding the viewing angle, research on a driving method for a wide viewing angle is being conducted along with a study on a compensation film.
보상 필름은 시야각에 따른 액정의 위상지연차이를 보정하기 위한 핵심적인 편광소자로써 필름형태이며, 고분자의 2축 연신방법 또는 1축 연신필름을 적층하여 제작하고 있다(대한민국 공개특허 2007-0003660 참조). 그러나 위와 같은 제작과정에서 별도의 필름을 사용하거나 2축 연신을 하는 공정상 광학 효율이 떨어지게 된다. 뿐만 아니라 2축 연신방법 또는 1축 연신필름을 적층하는 경우 대면적화, 가공 특성, 배향성 및 유연성 등에서 다양한 문제를 야기한다.The compensation film is a film type as a core polarizing element for correcting the phase delay difference of liquid crystal according to the viewing angle, and is manufactured by laminating a biaxial stretching method or a uniaxial stretching film of a polymer (refer to Korean Patent Application Laid-Open No. 2007-0003660) . However, in the above manufacturing process, the optical efficiency is lowered due to the use of a separate film or the process of biaxial stretching. In addition, when the biaxial stretching method or the uniaxial stretching film is laminated, various problems occur in large area, processing characteristics, orientation, and flexibility.
따라서, 본 발명이 해결하고자 하는 과제는 별도의 2축 연신 방법이나 1축 필름을 별도 공정으로 적층하지 않고, 분자 단위 내에서 하나의 공정으로 2축 특성을 갖는 광학 필름을 제조할 수 있는 방법을 제공하는 것이다.Therefore, the problem to be solved by the present invention is a method capable of producing an optical film having biaxial properties in a single process within a molecular unit without laminating a separate biaxial stretching method or a uniaxial film as a separate process. will provide
그러나 본 발명이 이루고자 하는 기술적 과제는 이상에서 언급한 과제에 제한되지 않으며, 언급되지 않은 또 다른 과제들은 아래의 기재로부터 당해 기술분야의 통상의 기술자에게 명확하게 이해될 수 있을 것이다.However, the technical problem to be achieved by the present invention is not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.
상기 과제를 해결하기 위하여, 본 발명은 네마틱 중합성 액정을 포함하는 2축 필름용 나노컬럼으로, 상기 나노컬럼은 봉상형 또는 디스크형 덴드론이 수소결합 또는 파이-파이 상호작용에 따라 적층된 구조이며, 상기 덴드론이 코어(A)-링커(B)-덴드론 말단(C)으로 이루어지는 것을 특징으로 하는 네마틱 중합성 액정을 포함하는 2축 필름용 나노컬럼을 제공한다. In order to solve the above problems, the present invention is a nano-column for a biaxial film containing a nematic polymerizable liquid crystal, wherein the nano-column is a rod-shaped or disk-shaped dendron stacked according to hydrogen bonding or pi-pi interaction. It provides a nano-column for a biaxial film containing a nematic polymerizable liquid crystal, characterized in that the structure, wherein the dendron consists of a core (A)-linker (B)-dendron end (C).
본 발명의 일 실시예에서, 상기 코어(A)는 인접한 덴드론의 코어와 파이-파이 결합을 할 수 있는 방향족기를 포함하며, 상기 덴드론이 봉상형인 경우 상기 코어(A)는 하기 화학식 1 중 어느 하나이다. In an embodiment of the present invention, the core (A) includes an aromatic group capable of pi-pi bonding with the core of an adjacent dendron, and when the dendron is rod-shaped, the core (A) is represented by
본 발명의 일 실시예에서, 상상기 덴드론이 디스크형인 경우 상기 코어(A)는 하기 화학식 2 중 어느 하나이다.In one embodiment of the present invention, when the Sanggi dendron has a disk shape, the core (A) is any one of the following formula (2).
(상기 화학식 1 및 화학식 2에서 R은 상기 덴드론의 링커-덴드론 말단을 나타냄)(In
본 발명의 일 실시예에서, 상기 링커(B)는 하기 화학식 3에서 선택된 어느 하나이며, In one embodiment of the present invention, the linker (B) is any one selected from the following formula (3),
상기 덴드론 말단(C)은 하기 화학식 4에서 선택된 어느 하나이다. The dendron end (C) is any one selected from the following formula (4).
(상기 화학식 4에서 n은 8 내지 12임)(n is 8 to 12 in Formula 4)
본 발명은 또한 상술한 2축 필름용 나노컬럼과, 네마틱 액정 화합물을 혼합하는 단계; 상기 혼합하는 단계 후 상기 나노컬럼과 액정물질을 배향하는 단계; 및 상기 배향된 액정물질을 중합하는 단계를 포함하는 것을 특징으로 하는 나노컬럼을 이용한 2축필름 제조방법을 제공한다. The present invention also comprises the steps of mixing the nano-column for the above-described biaxial film, and a nematic liquid crystal compound; aligning the nano-column and the liquid crystal material after the mixing; And it provides a method for producing a biaxial film using a nano-column, characterized in that it comprises the step of polymerizing the oriented liquid crystal material.
본 발명의 일 실시예에서, 상기 배향하는 단계는 상기 나노컬럼과 액정물질을 물리적으로 연신하는 방식으로 진행되며, 상기 네마틱 액정 물질은 네마틱 중합성 메조겐이다. In one embodiment of the present invention, the alignment step is performed in a manner of physically stretching the nano-column and the liquid crystal material, and the nematic liquid crystal material is a nematic polymerizable mesogen.
본 발명은 또한 상술한 2축 필름용 나노컬럼; 및 메조겐 액정 화합물을 포함하는 2축 필름을 제공하며, 상기 나노컬럼과 상기 메조겐 액정 화합물은 동일 방향으로 배향되며, 상기 나노컬럼의 덴드론의 장축 방향은 상기 동일 방향에 수직한다.The present invention also provides a nano-column for the above-mentioned biaxial film; and a mesogenic liquid crystal compound, wherein the nano-column and the mesogenic liquid crystal compound are oriented in the same direction, and the long axis direction of the dendron of the nano-column is perpendicular to the same direction.
본 발명에 따르면, 네마틱 중합성 액정내에 배향된 덴드론 구조의 나노컬럼을 광중합 방식으로 형성시킨다. 따라서, 별도의 필름을 다시 적층하는 종래 기술과 달리 분자 단위에서 광학적인 2축 특성을 갖는 필름 제조가 가능하다. 또한 분자 단위에서의 2축 특성을 갖게 됨으로써 종래의 1축 필름을 적층시키거나 2축 연식 공정에 의하여 제조된 2축 필름에 비하여 배향성이 우수하고, 높은 투과도를 갖는다. According to the present invention, nanocolumns having a dendron structure aligned in a nematic polymerizable liquid crystal are formed by photopolymerization. Therefore, it is possible to manufacture a film having optical biaxial properties in the molecular unit, unlike the prior art of laminating a separate film again. In addition, by having a biaxial property in a molecular unit, it has excellent orientation and high transmittance compared to a biaxial film manufactured by laminating a conventional uniaxial film or by a biaxial stretching process.
도 1은 본 발명의 일 실시예에 따른 네마틱 중합성 액정 내에서의 나노컬럼에 의하여 구현되는 광학 필름의 개념도이다.
도 2는 본 발명의 일 실시예에 따른 봉상형 덴드론 구조의 모식도이다.
도 3는 본 발명의 일 실시예에 따른 봉상형 덴드론의 구조를 설명하는 도면이다.
도 4는 본 발명의 일 실시예에 따른 디스크형 덴드론의 모식도이다.
도 5는 본 발명의 일 실시예에 따른 2축 필름의 제조공정의 단계도이다.
도 6 및 7은 각각 본 발명의 일 실시예에 따른 봉상형 덴드론 분자의 NMR 분석 결과, 컬럼 구조 분석 결과이다.
도 8 및 9는 봉상형 분자와 네마틱 중합성 액정(RM257)가의 배향성을 확인하기 위한 POM 이미지 및 polarized-dependent FT IR 분석결과이다. 1 is a conceptual diagram of an optical film implemented by nano-columns in a nematic polymerizable liquid crystal according to an embodiment of the present invention.
2 is a schematic diagram of a rod-shaped dendron structure according to an embodiment of the present invention.
3 is a view for explaining the structure of a rod-shaped dendron according to an embodiment of the present invention.
4 is a schematic diagram of a disk-shaped dendron according to an embodiment of the present invention.
5 is a step diagram of a manufacturing process of a biaxial film according to an embodiment of the present invention.
6 and 7 are results of NMR analysis and column structure analysis of rod-shaped dendron molecules according to an embodiment of the present invention, respectively.
8 and 9 are POM images and polarized-dependent FT IR analysis results for confirming the alignment between rod-shaped molecules and nematic polymerizable liquid crystal (RM257).
이하, 본 발명에 따른 덴드론 구조의 나노컬럼, 이를 이용한 2축 필름 제조방법 및 이를 포함하는 2축 필름의 바람직한 실시예를 첨부한 도면들에 의거하여 상세히 설명한다. 참고로, 본 명세서 및 청구범위에 사용된 용어와 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니 되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석해야만 한다. 또한, 본 명세서에 기재된 실시예와 도면에 도시된 구성은 본 발명의 가장 바람직한 일 실시예에 불과할 뿐이고, 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.Hereinafter, a nano-column having a dendron structure according to the present invention, a method for manufacturing a biaxial film using the same, and a preferred embodiment of a biaxial film including the same will be described in detail based on the accompanying drawings. For reference, the terms and words used in the present specification and claims are not to be construed as being limited to their ordinary or dictionary meanings, and the inventor must properly understand the concept of the term in order to best describe his invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept consistent with the technical idea of the present invention. In addition, the configuration shown in the embodiments and drawings described in the present specification are only the most preferred embodiment of the present invention, and do not represent all of the technical spirit of the present invention. It should be understood that there may be equivalents and variations.
본 발명은 상술한 문제를 해결하기 위하여, 자기조립 등에 의하여 네마틱 중합성 메조겐 내에 형성된 나노컬럼 구조를 통하여 분자 단위의 광학적 이방성을 구현한다. 이를 위하여 상기 나노컬럼은 봉상형, 디스크형 덴드론을 이용하여 형성시키는데, 이때 덴드론 각각의 부분(Moiety)의 파이-파이결합과 수소결합에 의하여 적층되어 하나의 나노컬럼을 자기조립하게 된다. In order to solve the above-mentioned problem, the present invention implements molecular-level optical anisotropy through a nano-column structure formed in nematic polymerizable mesogen by self-assembly or the like. To this end, the nano-columns are formed using rod-shaped and disk-shaped dendrons. At this time, each moiety of the dendrons is stacked by pi-pi bonds and hydrogen bonds to self-assemble one nanocolumn.
본 명세서에서 덴드론은 2개 이상의 분지된 사슬을 갖는 구조를 의미하며, 덴드론 특성은 말단의 알킬사슬(이하 덴드론 말단이라 지칭함)에 의하여 달성된다. In the present specification, dendron means a structure having two or more branched chains, and dendron properties are achieved by an alkyl chain at the terminal (hereinafter referred to as a dendron end).
도 1은 본 발명의 일 실시예에 따른 네마틱 중합성 액정 내에서의 나노컬럼에 의하여 구현되는 광학 필름의 개념도이다. 1 is a conceptual diagram of an optical film implemented by nano-columns in a nematic polymerizable liquid crystal according to an embodiment of the present invention.
도 1을 참조하면, 네마틱 반응성 메조겐(Nematic RM) 내에서 디스크형 덴드론이 적어도 2개 이상 적층된 나노컬럼을 가지고 있으며, 나노칼럼은 코어-링커-덴드론 말단으로 이루어진 덴드론이 적층된 구조를 갖는다. 본 발명은 특히 이러한 나노컬럼을 각 덴드론간 수소결합 및 파이-파이 상호작용으로 자기조립시키며, 이로써 별도의 컬럼 형성 공정이 불필요해져 공정상 경제적이다. Referring to FIG. 1 , it has a nanocolumn in which at least two disk-shaped dendrons are stacked in a nematic reactive mesogen (Nematic RM), and the nanocolumn is stacked with dendrons composed of a core-linker-dendron end. has a structured structure. In particular, the present invention self-assembles these nano-columns through hydrogen bonding and pi-pi interaction between each dendron, thereby eliminating the need for a separate column formation process, thereby making the process economical.
본 발명에서 상기 나노컬럼을 이루는 덴드론은 네마틱 중합성 메조겐과 일정 비율로 혼합되며, 특정 온도 조건에서 수소결합에 의하여 나노컬럼을 이룬다. In the present invention, the dendron constituting the nano-column is mixed with the nematic polymerizable mesogen in a certain ratio, and forms a nano-column by hydrogen bonding under a specific temperature condition.
이때 상기 덴드론은 네마틱 중합성 액정과 상호작용을 하면서 네마틱의 배향된 형태로 컬럼을 이루게 되며, 각 덴드론은 네마틱 배향방향과 수직교차하는 이른바 배향 차원(oriental order)을 형성한다. At this time, the dendrons interact with the nematic polymerizable liquid crystal to form a column with a nematic orientation, and each dendron forms a so-called orientation dimension (oriental order) perpendicular to the nematic orientation direction.
본 발명의 일 실시예에서는 네마틱 중합성 메조겐을 사용하였으나, 본 발명의 범위는 이에 제한되지 않으면, 메조건 액정을 구현할 수 있는 모든 물질이 본 발명의 범위에 속한다. In an embodiment of the present invention, nematic polymerizable mesogen is used, but if the scope of the present invention is not limited thereto, all materials capable of realizing mesogen liquid crystal fall within the scope of the present invention.
도 2는 본 발명의 일 실시예에 따른 봉상형 덴드론 구조의 모식도이다. 2 is a schematic diagram of a rod-shaped dendron structure according to an embodiment of the present invention.
도 2를 참조하면, 본 발명의 일 실시예에서 상기 덴드론은 파이-파이 결합으로 자기조립되어 적층될 수 있도록 중심의 방향족기를 갖는 코어(A)와, 수소결합과 높은 파장대의 빛을 흡수할 수 있는 링커(B), 그리고 알킬기로 이루어진 덴드론 말단(C)을 포함할 수 있다. Referring to Figure 2, in an embodiment of the present invention, the dendron is self-assembled by pi-pi bond and has a core (A) having an aromatic group in the center so that it can be stacked, and a hydrogen bond and a high wavelength band to absorb light. It may include a linker (B) that may be capable of, and a dendron end (C) consisting of an alkyl group.
본 발명의 일 실시예에서 상기 덴드론의 코어(A)는 파이-파이 상호작용을 할 수 있는 방향족기(예를 들어 벤젠기)를 포함할 수 있으며, 이때 가시광선을 흡수할 수 있는 원자인 질소, 황 또는 이민 결합을 가질 수 있다. In an embodiment of the present invention, the core (A) of the dendron may include an aromatic group (eg, a benzene group) capable of pi-pi interaction, in which case it is an atom capable of absorbing visible light. It may have nitrogen, sulfur or imine bonds.
하기 식 1은 본 발명의 일 실시예에 따른 2축 필름 제조용 나노컬럼의 덴드론 코어의 분자식이다.
상기 식에서 R은 하기 설명되는 링커(B)가 직접 치환되며, 이후 상기 링커(B)를 통하여 덴드론 구조를 갖는 덴드론 말단(C)이 결합된다. In the above formula, R is directly substituted with a linker (B) described below, and then a dendron end (C) having a dendron structure is bonded through the linker (B).
본 발명에서 링커(linker, B)는 덴드론 구조의 알킬기와 코어를 연결하는 기능기로서, 하기 식 2의 분자 중 어느 하나일 수 있는데, 나노컬럼을 이루는데 필요한 수소결합이 가능하도록 아미드기를 포함할 수 있으며 필요에 따라서는 장파장을 흡수할 수 있는 이민(C=N)기를 더 포함할 수 있다. In the present invention, the linker (B) is a functional group that connects the core with the alkyl group of the dendron structure, and may be any one of the molecules of Formula 2 below, including an amide group to enable hydrogen bonding required to form a nanocolumn. and may further include an imine (C=N) group capable of absorbing a long wavelength if necessary.
덴드론 말단(C)은 선형 알킬사슬 또는 말단에 이온그룹이 치환된 알킬사슬이 1,3,5-벤조네이트에 치환된 구조를 갖는다. The dendron terminal (C) has a structure in which a linear alkyl chain or an alkyl chain in which an ionic group is substituted at the terminal is substituted with 1,3,5-benzonate.
하기 식 3은 본 발명의 일 실시예에 따른 덴드론 말단의 화학식이다. Equation 3 below is a chemical formula of a dendron terminal according to an embodiment of the present invention.
상기 식 3에서 알킬사슬기의 탄소수는 8 내지 12이며, 필요에 따라서는 그 말단에 중합가능한 작용기를 도입할 수 있다. In Formula 3, the number of carbon atoms of the alkyl chain group is 8 to 12, and if necessary, a polymerizable functional group may be introduced at the terminal thereof.
상기 방식으로 형성된 덴드론은 각 코어-링커-덴드론 말단이 또 다른 덴드론의 코어-링커-덴드론 말단과 수소결합 및 파이-파이 상호작용을 할 수 있으며, 이때 사슬 길이에 의하여 가장 유연한 알킬기를 갖는 덴드론 말단이 컬럼의 가장 외측에 위치하게 된다. In the dendron formed in this way, each core-linker-dendron end can hydrogen bond and pi-pi interact with the core-linker-dendron end of another dendron, and in this case, the most flexible alkyl group according to the chain length The end of the dendron with , is located at the outermost part of the column.
본 발명의 일 실시예에서는 상기 덴드론 말단에 이온을 도입하여 컬럼간 반발을 유도, 각 단위 덴드론간의 간격을 조절할 수 있다. In one embodiment of the present invention, ions are introduced at the end of the dendron to induce repulsion between columns, and the distance between each unit dendron can be adjusted.
도 3는 본 발명의 일 실시예에 따른 봉상형 덴드론의 구조를 설명하는 도면이다. 3 is a view for explaining the structure of a rod-shaped dendron according to an embodiment of the present invention.
도 3을 참조하면, 상술한 구조의 봉상형 덴드론은 2-4개의 분자들이 모여 하나의 디스크를 형성하며, 이때 특정 방향으로 물리적 연신을 가하게 되면, 광축 방향으로 나노컬럼을 형성할 수 있다. 이때 컬럼의 장축 방향(X)과 컬럼내 분자의 긴축 방향(Y)은 수직을 형성하게 되어, 컬럼 방향으로는 이상굴절률(Extraordinary refractive index)을, 그의 수직 방향으로는 정상굴절률(Ordinary refractive index)을 갖게 된다. Referring to FIG. 3 , in the rod-shaped dendron of the above-described structure, 2-4 molecules are gathered to form a single disk. At this time, when physical stretching is applied in a specific direction, nano-columns can be formed in the optical axis direction. At this time, the long axis direction (X) of the column and the long axis direction (Y) of the molecules in the column are perpendicular to each other, so that an extraordinary refractive index in the column direction and an ordinary refractive index in its vertical direction are perpendicular. will have
하기 도 4는 본 발명의 일 실시예에 따른 디스크형 덴드론의 모식도이다. 4 is a schematic diagram of a disk-type dendron according to an embodiment of the present invention.
도 4를 참조하면, 디스크형 덴드론의 경우, 상시 봉상형 덴드론을 이루는 방향족기를 디스크 형태의 방향족기로 치환시킨 구조를 가지며, 코어에 연결되는 링커(B)와 덴드론 말단(C)은 코어 각각의 방향족기(벤젠기)와 연결된다. 4, in the case of a disk-shaped dendron, it has a structure in which an aromatic group constituting a rod-shaped dendron is substituted with an aromatic group of a disk-shaped form, and the linker (B) connected to the core and the end of the dendron (C) are the cores. It is connected to each aromatic group (benzene group).
하기 식 4는 디스크형 덴드론의 코어 화합물의 예시이다. 이때 상기 코어에서는 봉상형과 유사하게 가시광선을 흡수할 수 있는 원소인 질소, 황, 이민이 포함될 수 있다. The following formula 4 is an example of a core compound of a disk-shaped dendron. At this time, the core may contain nitrogen, sulfur, and imine, which are elements capable of absorbing visible light similar to the rod-shaped shape.
본 발명의 일 실시예에서 네마틱 중합성 액정으로 사용된 화합물은 네마틱 반응성 메조겐으로 RM257, LC242 등이었으나, 본 발명의 범위는 이에 제한되지 않는다. In an embodiment of the present invention, the compound used as the nematic polymerizable liquid crystal is a nematic reactive mesogen such as RM257, LC242, and the like, but the scope of the present invention is not limited thereto.
이하 상기 설명한 스택 구조의 나노컬럼을 형성할 수 있는 덴드론과 네마틱 반응성 메조겐을 이용한 2축 필름 제조방법을 보다 상세히 설명한다. Hereinafter, a method for manufacturing a biaxial film using a dendron capable of forming a nanocolumn of the stack structure described above and a nematic reactive mesogen will be described in more detail.
도 5는 본 발명의 일 실시예에 따른 2축 필름의 제조공정의 단계도이다. 5 is a step diagram of a manufacturing process of a biaxial film according to an embodiment of the present invention.
도 5를 참조하면, 상술한 덴드론과 네마틱 중합성 액정을 혼합한다. 상기 덴드론과 네마틱 중합성 액정의 혼합비율은 2축 필름의 사용조건에 따라 자유로이 설명될 수 있다. 덴드론의 함량이 높은 경우에는 액정의 함유량이 낮기 때문에 배향성이 떨어지고, 덴드론의 함량이 낮은 경우에는 배향성은 증가하지만 굴절률과 이방성이 유도되지 않을 수 있다. 적정 덴드론의 함량은 30 ?? 45 wt% 이다. Referring to FIG. 5 , the above-described dendron and nematic polymerizable liquid crystal are mixed. The mixing ratio of the dendron and the nematic polymerizable liquid crystal can be freely described according to the conditions of use of the biaxial film. When the content of dendron is high, the alignment property is deteriorated because the content of the liquid crystal is low, and when the content of dendron is low, the orientation increases, but refractive index and anisotropy may not be induced. The appropriate amount of dendron is 30 ?? 45 wt%.
이후 특정 온도에서 전단력을 가하여 나노컬럼과 네마틱 중합석 액정(예를 들어 메조겐)을 한 방향으로 배향시킨다. 이후 자외선, 열, 산 등과 같이 액정 물질을 중합시킬 수 있는 조건을 형성하여 중합 공정(polymerization)을 진행 2축 필름을 제조한다. 구체적으로 ITO 기판 위에 배향막을 코팅하고 건조시킨 후 러빙하여 기판을 준비한 후 네마틱 중합성 액정 70 wt%, 봉상형 덴드론을 30 wt%로 혼합하여 기판 위에 놓고 전단력을 가하여 배향한다. 70도에서 10분간 열처리 한 후 UV를 10분간 조사하여 조성물을 경화시켜 필름을 수득할 수 있다. Thereafter, a shear force is applied at a specific temperature to align the nano-column and the nematic polymerized liquid crystal (eg, mesogen) in one direction. Thereafter, a polymerization process is performed by forming conditions that can polymerize the liquid crystal material, such as ultraviolet rays, heat, acid, etc. to prepare a biaxial film. Specifically, an alignment film is coated on an ITO substrate, dried, and rubbed to prepare a substrate. Then, 70 wt% of a nematic polymerizable liquid crystal and 30 wt% of a rod-shaped dendron are mixed, placed on the substrate, and oriented by applying a shear force. After heat treatment at 70 degrees for 10 minutes, UV irradiation for 10 minutes can cure the composition to obtain a film.
실험예Experimental example
봉상형 덴드론 분자 분석 Analysis of rod-shaped dendron molecules
본 실험예에서는 실제 사용된 봉상형 덴드론 분자를 분석하였다. In this experimental example, the rod-shaped dendron molecules actually used were analyzed.
도 6 및 7은 각각 본 발명의 일 실시예에 따른 봉상형 덴드론 분자의 NMR 분석 결과, 컬럼 구조 분석 결과이다. 6 and 7 are results of NMR analysis and column structure analysis of rod-shaped dendron molecules according to an embodiment of the present invention, respectively.
도 6 및 7을 참조하면, 코어-링커-덴드론 말단으로 이루어진 덴드론 화합물 구조가 NMR 데이터 결과를 통하여 확인할 수 있다. 또한 봉상형 덴드론의 컬럼구조를 확인할 수 있다. 6 and 7, the structure of the dendron compound consisting of the core-linker-dendron end can be confirmed through the NMR data result. In addition, the column structure of the rod-shaped dendron can be confirmed.
봉상형 덴드론의 합성과정은 다음과 같다. 4,4'-((2,3-dihydrothieno[3,4 ??b][1,4]dithiine-5,7-diyl)bis(sulfanediyl)dianilne (0.2 g, 0.48 mmol)과 3,4,5-tris(dodecyloxy)benzoic acid (1.28 g, 1.89 mmol)을 메틸클로라이드 (MC)에 용해시킨 후, 과량의 DIPC와 미량의 DPTS와 함께 혼합물에 녹인 후 0 ㅀC에서 48시간 교반시킨다. 반응 후에 물과 메틸렌클로라이드를 이용하여 추출하고, 헥산과 에틸아세테이트의 비율을 6:1로 한 전개용매를 이용하여 컬럼크로마토그래피법으로 정제하여 최종 합성물을 얻을 수 있다.The process of synthesizing the rod-shaped dendron is as follows. 4,4'-((2,3-dihydrothieno[3,4 ??b][1,4]dithiine-5,7-diyl)bis(sulfanediyl)dianilne (0.2 g, 0.48 mmol) and 3,4, After dissolving 5-tris(dodecyloxy)benzoic acid (1.28 g, 1.89 mmol) in methyl chloride (MC), it was dissolved in a mixture with an excess of DIPC and a small amount of DPTS, followed by stirring at 0 °C for 48 hours. It is extracted using water and methylene chloride, and purified by column chromatography using a developing solvent in which the ratio of hexane and ethyl acetate is 6:1 to obtain a final compound.
도 6의 NMR 분석 결과는 다음과 같다.The NMR analysis result of FIG. 6 is as follows.
1H-NMR (500 MHz, CDCl3) : δ = 8.14 (s, 2H), 7.54(d, 4H), 7.22 (m, 4H), 7.05 (s, 4H), 3.95 (m, 12H), 3.18 (s, 4H), 1.75 (m, 12H), 1.46 (m, 12H), 1.4 (m, 96H), 0.89 (t, 6H)1H-NMR (500 MHz, CDCl 3 ): δ = 8.14 (s, 2H), 7.54 (d, 4H), 7.22 (m, 4H), 7.05 (s, 4H), 3.95 (m, 12H), 3.18 ( s, 4H), 1.75 (m, 12H), 1.46 (m, 12H), 1.4 (m, 96H), 0.89 (t, 6H)
도 7의 2D WAXD 분석 결과는 다음과 같다. The 2D WAXD analysis result of FIG. 7 is as follows.
가장 낮은 각도의 있는 피크의 비율이 1 : √3 : √7 인 것으로 보아 hexagonal columnar phase임을 알 수 있었고, 계산한 unit cell에 분자 4개가 포함되어 있다고 가정할 때, density는 1.08 g/cm3 임을 알 수 있다. 봉상형 분자의 core가 수소결합에 의해 packing을 하여 tetramer를 만들면서 전단 방향으로 컬럼을 이룬다.The ratio of the peak with the lowest angle was 1: √3: √7, indicating that it was a hexagonal columnar phase, and assuming that 4 molecules were included in the calculated unit cell, the density was 1.08 g/cm 3 Able to know. The core of the rod-shaped molecule is packed by hydrogen bonds to form a tetramer, forming a column in the shear direction.
배향성 확인 분석Orientation confirmation analysis
본 실험예에서는 상술한 봉상형 덴드론 나노컬럼과 네마틱 중합성 액정(RM257)의 배향성 분석을 진행하였다. In this experimental example, the orientation analysis of the above-described rod-shaped dendron nano-column and nematic polymerizable liquid crystal (RM257) was performed.
도 8 및 9는 봉상형 분자와 네마틱 중합성 액정(RM257)가의 배향성을 확인하기 위한 POM 이미지 및 polarized-dependent FT IR 분석결과이다. 8 and 9 are POM images and polarized-dependent FT IR analysis results for confirming the alignment between rod-shaped molecules and nematic polymerizable liquid crystal (RM257).
도 8을 참조하면, polarizer와 필름의 전단방향이 일치하게 놓았을 때, dark한 이미지를 얻었고 전단방향을 45도 회전하였을 때, 가장 밝은 휘도를 보였다. 이는 전단방향으로 혼합물이 높은 배향성을 가짐을 의미한다. Referring to FIG. 8 , when the polarizer and the shear direction of the film coincide with each other, a dark image was obtained, and when the shear direction was rotated 45 degrees, the brightest luminance was shown. This means that the mixture has high orientation in the shear direction.
도 9는 FT-IR dichroism 분석을 통하여 분자 정렬상태를 파악한 결과이다.9 is a result of understanding the molecular alignment state through FT-IR dichroism analysis.
dichoric ratio를 정의하기 위해 A∥는 전단방향에 평행한 방향의 흡수도이고 A⊥는 전단방향에 수직한 방향의 흡수도이다. dichroic ratio는 특정 흡수 픽에서 전단방향의 평행한 방향의 흡수도를 수직한 방향의 흡수도로 나눈 값이다. 봉상형 덴드론의 수소결합을 할 수 있는 amide의 피크가 2이상의 높은 dichoric ratio값을 가진 것으로 보아 전단방향에 수직하게 컬럼을 형성하는 것을 알 수 있다. 이는 네마틱 중합성 액정방향에 수직적인 광축을 갖는 나노컬럼을 2축 필름으로 쓰일 수 있음을 내제한다.To define the dichoric ratio, A │ is the absorbance in the direction parallel to the shear direction, and A ⊥ is the absorbance in the direction perpendicular to the shear direction. The dichroic ratio is the value obtained by dividing the absorbance in the parallel direction to the shear direction by the absorbance in the vertical direction in a specific absorption pick. As the peak of amide capable of hydrogen bonding of rod-shaped dendrons has a high dichoric ratio value of 2 or more, it can be seen that the column is formed perpendicular to the shear direction. This implies that a nano-column having an optical axis perpendicular to the direction of the nematic polymerizable liquid crystal can be used as a biaxial film.
Claims (9)
상기 나노컬럼은 봉상형 또는 디스크형 덴드론이 수소결합 또는 파이-파이 상호작용에 따라 적층된 구조이며,
상기 덴드론이 코어(A)-링커(B)-덴드론 말단(C)으로 이루어지는 것을 특징으로 하고,
상기 덴드론이 봉상형인 경우 상기 코어(A)는 하기 화학식 1 중 어느 하나이며,
(화학식 1)
상기 덴드론이 디스크형인 경우 상기 코어(A)는 하기 화학식 2 중 어느 하나 인 것이고,
(화학식 2)
(상기 화학식 1 및 화학식 2에서 R은 상기 덴드론의 링커-덴드론 말단을 나타냄)
상기 링커(B)는 하기 화학식 3에서 선택된 어느 하나이며,
상기 덴드론 말단(C)은 하기 화학식 4에서 선택된 어느 하나인 것이고,
(상기 화학식 4에서 n은 8 내지 12임)
상기 덴드론은 함량은 30 내지 45 wt%이며,
상기 덴드론은 상기 네마틱 중합성 액정과 상호작용을 하면서 네마틱의 배향된 형태로 컬럼을 이루게 되며, 각 덴드론은 네마틱 배향방향과 수직교차하는 것인 네마틱 중합성 액정을 포함하는 2축 필름용 나노컬럼.Nano column for biaxial film containing nematic polymerizable liquid crystal,
The nano-column has a structure in which rod-shaped or disk-shaped dendrons are stacked according to hydrogen bonding or pi-pi interaction,
The dendron is characterized in that it consists of a core (A) - a linker (B) - a dendron end (C),
When the dendron is rod-shaped, the core (A) is any one of the following Chemical Formula 1,
(Formula 1)
When the dendron is disk-shaped, the core (A) is any one of the following Chemical Formula 2,
(Formula 2)
(In Formulas 1 and 2, R represents the linker-dendron end of the dendron)
The linker (B) is any one selected from the following formula (3),
The dendron end (C) is any one selected from the following formula (4),
(in Formula 4, n is 8 to 12)
The dendron content is 30 to 45 wt%,
The dendron interacts with the nematic polymerizable liquid crystal to form a column in a nematically aligned form, and each dendron is perpendicular to the nematic alignment direction. Nanocolumns for axis films.
상기 코어(A)는 인접한 덴드론의 코어와 파이-파이 결합을 할 수 있는 방향족기를 포함하는 것을 특징으로 하는 네마틱 중합성 액정을 포함하는 2축 필름용 나노컬럼.The method of claim 1,
The core (A) is a nano-column for a biaxial film comprising a nematic polymerizable liquid crystal, characterized in that it includes an aromatic group capable of pi-bonding with the core of the adjacent dendron.
상기 혼합하는 단계 후 상기 나노컬럼과 네마틱 액정 화합물을 배향하는 단계; 및
상기 배향된 네마틱 액정 화합물을 중합하는 단계를 포함하는 것을 특징으로 하는, 나노컬럼을 이용한 2축필름 제조방법.Mixing the nano-column for a biaxial film according to claim 1 or 2 and a nematic liquid crystal compound;
aligning the nano-column and the nematic liquid crystal compound after the mixing; and
A method for producing a biaxial film using a nano-column, characterized in that it comprises the step of polymerizing the oriented nematic liquid crystal compound.
상기 배향하는 단계는 상기 나노컬럼과 네마틱 액정 화합물을 물리적으로 연신하는 방식으로 진행되는 것을 특징으로 하는 나노컬럼을 이용한 2축필름 제조방법.6. The method of claim 5,
The orienting step is a biaxial film manufacturing method using a nano-column, characterized in that the nano-column and the nematic liquid crystal compound are physically stretched.
상기 네마틱 액정 화합물은 네마틱 중합성 메조겐인 것을 특징으로 하는 2축필름 제조방법.6. The method of claim 5,
The method for producing a biaxial film, characterized in that the nematic liquid crystal compound is nematic polymerizable mesogen.
메조겐 액정 화합물을 포함하는 2축 필름.A nano-column for a biaxial film according to claim 1 or 2; and
A biaxial film comprising a mesogenic liquid crystal compound.
상기 나노컬럼과 상기 메조겐 액정 화합물은 동일 방향으로 배향되며, 상기 나노컬럼의 덴드론의 장축 방향은 상기 동일 방향에 수직하는 것을 특징으로 하는 2축 필름.
9. The method of claim 8,
The nano-column and the mesogenic liquid crystal compound are oriented in the same direction, and the long-axis direction of the dendron of the nano-column is perpendicular to the same direction.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020200005970A KR102281268B1 (en) | 2020-01-16 | 2020-01-16 | Nano-column having dendron structur, manufacturing method for two-axis film using the same and two-axis film comprising the same |
| PCT/KR2020/003446 WO2021145507A1 (en) | 2020-01-16 | 2020-03-12 | Dendron-structured nano-column, method for manufacturing biaxial film using same, and biaxial film comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020200005970A KR102281268B1 (en) | 2020-01-16 | 2020-01-16 | Nano-column having dendron structur, manufacturing method for two-axis film using the same and two-axis film comprising the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR102281268B1 true KR102281268B1 (en) | 2021-07-23 |
Family
ID=76863853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020200005970A KR102281268B1 (en) | 2020-01-16 | 2020-01-16 | Nano-column having dendron structur, manufacturing method for two-axis film using the same and two-axis film comprising the same |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR102281268B1 (en) |
| WO (1) | WO2021145507A1 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140052160A (en) * | 2012-10-22 | 2014-05-07 | 전북대학교산학협력단 | Dendric liquid crystals and method for preparing the same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101458204B1 (en) * | 2007-04-02 | 2014-11-04 | 삼성전자주식회사 | Dendrimer having metallocene core, organic memory device using the same and preparation method thereof |
| JP6444589B2 (en) * | 2013-09-06 | 2018-12-26 | エルジー ディスプレイ カンパニー リミテッド | Liquid crystal display |
| JP6339782B2 (en) * | 2013-09-25 | 2018-06-06 | エルジー ディスプレイ カンパニー リミテッド | Liquid crystal horizontal alignment agent, horizontal alignment type liquid crystal composition, horizontal alignment type liquid crystal display device and manufacturing method thereof |
-
2020
- 2020-01-16 KR KR1020200005970A patent/KR102281268B1/en active IP Right Grant
- 2020-03-12 WO PCT/KR2020/003446 patent/WO2021145507A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140052160A (en) * | 2012-10-22 | 2014-05-07 | 전북대학교산학협력단 | Dendric liquid crystals and method for preparing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021145507A1 (en) | 2021-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8686196B2 (en) | Optically isotropic liquid crystal medium and optical device | |
| JP4592005B2 (en) | Polarizing element, liquid crystal panel, liquid crystal television, liquid crystal display device, and manufacturing method of polarizing element | |
| KR102157012B1 (en) | Method for manufacturing liquid crystal alignment film, liquid crystal alignment film, and liquid crystal display element | |
| CN104238169B (en) | Iquid-crystal display element and substrate used in same | |
| US8409673B2 (en) | Chlorobenzene derivative, optically isotropic liquid crystal medium, and optical device | |
| JP5555381B2 (en) | Liquid crystal display panel and liquid crystal display device | |
| KR101495700B1 (en) | Liquid crystal display element | |
| KR100639536B1 (en) | Alignmemt layer, and a liquid crystal display using the same | |
| JPH11181127A (en) | Preparation of oriented film, oriented film and liquid crystal display equipped therewith | |
| WO2013103153A1 (en) | Liquid crystal display device and method for manufacturing same | |
| WO2014061757A1 (en) | Monomer, liquid crystal composition, liquid crystal display device, and production method for liquid crystal display device | |
| JP7067555B2 (en) | Composition, liquid crystal alignment film, retardation plate, polarizing plate, method for manufacturing the alignment film, and liquid crystal element | |
| WO2013031616A1 (en) | Liquid-crystal display panel and liquid-crystal display device | |
| TWI524116B (en) | A liquid crystal display panel, a liquid crystal display device, and a liquid crystal display unit | |
| WO2021060428A1 (en) | Polymerizable liquid crystal composition, compound, optically anisotropic film, optical film, polarizing plate and image display device | |
| KR20130017938A (en) | Reactive liquid crystal composition | |
| KR102281268B1 (en) | Nano-column having dendron structur, manufacturing method for two-axis film using the same and two-axis film comprising the same | |
| JP7371110B2 (en) | Polymerizable liquid crystal compositions, optically anisotropic films, optical films, polarizing plates, and image display devices | |
| JP7285226B2 (en) | Polymerizable liquid crystal composition, compound, optically anisotropic film, optical film, polarizing plate, and image display device | |
| KR101657677B1 (en) | Polymerizable liquid crystal compounds, polymerizable liquid crystal composition, optically anisotropic body, and optical element for display device | |
| CN1965264A (en) | A liquid crystal device and a method for manufacturing thereof | |
| JPH09288210A (en) | Optical anisotropic body film and its production as well as liquid crystal display device | |
| WO2020017622A1 (en) | Photoreactive composition, liquid crystal cell using photoreactive composition, and method for producing liquid crystal cell | |
| JP2001220583A (en) | Polymerizable liquid crystal composition, polymer liquid crystal prepared by polymerizing the composition and its use | |
| CN111679509A (en) | Horizontal alignment liquid crystal display element, liquid crystal composition, display device, and method for manufacturing horizontal alignment liquid crystal display element |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant |