KR20230046547A - Liquid crystal composition, polymer dispered liquid crystal composition and advertisement system comprising the same - Google Patents
Liquid crystal composition, polymer dispered liquid crystal composition and advertisement system comprising the same Download PDFInfo
- Publication number
- KR20230046547A KR20230046547A KR1020210129653A KR20210129653A KR20230046547A KR 20230046547 A KR20230046547 A KR 20230046547A KR 1020210129653 A KR1020210129653 A KR 1020210129653A KR 20210129653 A KR20210129653 A KR 20210129653A KR 20230046547 A KR20230046547 A KR 20230046547A
- Authority
- KR
- South Korea
- Prior art keywords
- liquid crystal
- crystal composition
- weight
- formula
- polymer dispersed
- Prior art date
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 122
- 239000000203 mixture Substances 0.000 title claims abstract description 82
- 229920000642 polymer Polymers 0.000 title claims description 21
- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 claims abstract description 52
- 150000001875 compounds Chemical class 0.000 claims abstract description 48
- 239000000126 substance Substances 0.000 claims description 18
- 239000002243 precursor Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 claims description 5
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 5
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 claims description 5
- VFHVQBAGLAREND-UHFFFAOYSA-N diphenylphosphoryl-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C1=CC=CC=C1 VFHVQBAGLAREND-UHFFFAOYSA-N 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 4
- FIHBHSQYSYVZQE-UHFFFAOYSA-N 6-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound C=CC(=O)OCCCCCCOC(=O)C=C FIHBHSQYSYVZQE-UHFFFAOYSA-N 0.000 claims description 3
- ZDHCZVWCTKTBRY-UHFFFAOYSA-N omega-Hydroxydodecanoic acid Natural products OCCCCCCCCCCCC(O)=O ZDHCZVWCTKTBRY-UHFFFAOYSA-N 0.000 claims description 3
- OXBLVCZKDOZZOJ-UHFFFAOYSA-N 2,3-Dihydrothiophene Chemical compound C1CC=CS1 OXBLVCZKDOZZOJ-UHFFFAOYSA-N 0.000 claims description 2
- GUCYFKSBFREPBC-UHFFFAOYSA-N [phenyl-(2,4,6-trimethylbenzoyl)phosphoryl]-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C(=O)C1=C(C)C=C(C)C=C1C GUCYFKSBFREPBC-UHFFFAOYSA-N 0.000 claims description 2
- 125000004386 diacrylate group Chemical group 0.000 claims description 2
- 239000000376 reactant Substances 0.000 claims description 2
- 239000004815 dispersion polymer Substances 0.000 claims 1
- 238000002834 transmittance Methods 0.000 abstract description 28
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 abstract description 6
- 230000000052 comparative effect Effects 0.000 description 20
- 238000005191 phase separation Methods 0.000 description 7
- 238000002156 mixing Methods 0.000 description 6
- 230000001747 exhibiting effect Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- DOALOUQODWWGEZ-UHFFFAOYSA-N 1-ethyl-4-[4-(4-propylcyclohexyl)phenyl]benzene Chemical compound C1CC(CCC)CCC1C1=CC=C(C=2C=CC(CC)=CC=2)C=C1 DOALOUQODWWGEZ-UHFFFAOYSA-N 0.000 description 2
- ZGOWXOZNUNZPAV-UHFFFAOYSA-N 4-(4-heptylphenyl)benzonitrile Chemical compound C1=CC(CCCCCCC)=CC=C1C1=CC=C(C#N)C=C1 ZGOWXOZNUNZPAV-UHFFFAOYSA-N 0.000 description 2
- GPGGNNIMKOVSAG-UHFFFAOYSA-N 4-(4-octoxyphenyl)benzonitrile Chemical compound C1=CC(OCCCCCCCC)=CC=C1C1=CC=C(C#N)C=C1 GPGGNNIMKOVSAG-UHFFFAOYSA-N 0.000 description 2
- FURZYCFZFBYJBT-UHFFFAOYSA-N 4-(4-pentylcyclohexyl)benzonitrile Chemical compound C1CC(CCCCC)CCC1C1=CC=C(C#N)C=C1 FURZYCFZFBYJBT-UHFFFAOYSA-N 0.000 description 2
- XXUSEPRYHRDKFV-UHFFFAOYSA-N 4-(4-propylcyclohexyl)benzonitrile Chemical compound C1CC(CCC)CCC1C1=CC=C(C#N)C=C1 XXUSEPRYHRDKFV-UHFFFAOYSA-N 0.000 description 2
- GPKWICXATIXXQY-UHFFFAOYSA-N 4-(4-propylcyclohexyl)cyclohexane-1-carbonitrile Chemical compound C1CC(CCC)CCC1C1CCC(C#N)CC1 GPKWICXATIXXQY-UHFFFAOYSA-N 0.000 description 2
- NYIIMCUQDTTYJB-UHFFFAOYSA-N 4-[4-(4-pentylcyclohexyl)cyclohexyl]benzonitrile Chemical compound C1CC(CCCCC)CCC1C1CCC(C=2C=CC(=CC=2)C#N)CC1 NYIIMCUQDTTYJB-UHFFFAOYSA-N 0.000 description 2
- QKEBUASRTJNJJS-UHFFFAOYSA-N 4-[4-(4-pentylcyclohexyl)phenyl]benzonitrile Chemical compound C1CC(CCCCC)CCC1C1=CC=C(C=2C=CC(=CC=2)C#N)C=C1 QKEBUASRTJNJJS-UHFFFAOYSA-N 0.000 description 2
- HHPCNRKYVYWYAU-UHFFFAOYSA-N 4-cyano-4'-pentylbiphenyl Chemical compound C1=CC(CCCCC)=CC=C1C1=CC=C(C#N)C=C1 HHPCNRKYVYWYAU-UHFFFAOYSA-N 0.000 description 2
- 239000004988 Nematic liquid crystal Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- HWMHRQOJZXBQBL-UHFFFAOYSA-N 4-(4-pentylcyclohexyl)cyclohexane-1-carbonitrile Chemical compound C1CC(CCCCC)CCC1C1CCC(C#N)CC1 HWMHRQOJZXBQBL-UHFFFAOYSA-N 0.000 description 1
- 239000005254 4-(trans-4-Propylcyclohexyl)benzonitrile Substances 0.000 description 1
- -1 4-Pentyl-4-(4-fluorophenyl)bi(cyclohexane) Chemical compound 0.000 description 1
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000012769 display material Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- WKGDNXBDNLZSKC-UHFFFAOYSA-N oxido(phenyl)phosphanium Chemical compound O=[PH2]c1ccccc1 WKGDNXBDNLZSKC-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
- C08F2/50—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
-
- 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
- C09K19/02—Liquid crystal materials characterised by optical, electrical or physical properties of the components, in general
-
- 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
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
-
- 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
-
- 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
- C09K19/542—Macromolecular compounds
-
- 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
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
-
- 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
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
- C09K19/3001—Cyclohexane rings
- C09K19/3003—Compounds containing at least two rings in which the different rings are directly linked (covalent bond)
- C09K2019/3004—Cy-Cy
-
- 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
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
- C09K19/3001—Cyclohexane rings
- C09K19/3003—Compounds containing at least two rings in which the different rings are directly linked (covalent bond)
- C09K2019/3009—Cy-Ph
-
- 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
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
- C09K19/3001—Cyclohexane rings
- C09K19/3003—Compounds containing at least two rings in which the different rings are directly linked (covalent bond)
- C09K2019/301—Cy-Cy-Ph
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Nonlinear Science (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Mathematical Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Liquid Crystal Substances (AREA)
Abstract
Description
본 발명은 액정 조성물, 이를 포함하는 고분자 분산형 액정 조성물 및 광고 시스템에 관한 것이다.The present invention relates to a liquid crystal composition, a polymer dispersed liquid crystal composition including the liquid crystal composition, and an advertising system.
고분자 분산형 액정(Polymer Dispered Liquid Crystal, PDLC)은 우수한 광 특성을 나타낼 뿐 아니라 간단한 제조공정으로 제조가 가능하고 대면적화가 용이하여 디스플레이 재료로서 많은 주목을 받고 있다. 고분자 분산형 액정은 액정이 고분자와 상분리되어 형성된 액정 방울(droplets)이 고분자 매트릭스 내 분산된 구조를 가진다. 이러한 고분자 분산형 액정은 전압이 인가되지 않은 상태에서 액정이 임의의 방향으로 배열하여 액정과 고분자 간의 굴절률 차이가 발생하여 입사된 빛이 불투명하게 산란되고, 반면 전압이 인가되면 액정 방울들이 전기장에 의해 한 방향으로 정렬 및 재배열되어 고분자의 굴절률과 같아져 입사되는 빛이 투명하게 투과된다. 즉 전압 인가 여부에 따라 빛이 투과되거나 산란되는 두 가지 상태에서 디스플레이가 구동된다. 그러나 종래의 고분자 분산형 액정은 차폐 특성과 액정의 구동온도를 높이기 위해 높은 굴절률 이방성을 갖는 네마틱 액정을 사용하기 때문에 투명 상태(on state)에서 좁은 시야각을 가질 수밖에 없어 대면적으로 PDLC를 장착할 경우 측면에서 시야를 가릴 수 있고 빔 스크린으로 이용 시 높은 산란으로 화질이 현저하게 떨어진다는 한계가 존재하였다. Polymer Dispered Liquid Crystal (PDLC) not only exhibits excellent optical properties, but also can be manufactured with a simple manufacturing process and is easy to make to a large area, so it has received a lot of attention as a display material. The polymer-dispersed liquid crystal has a structure in which liquid crystal droplets formed by phase separation of a liquid crystal from a polymer are dispersed in a polymer matrix. In this polymer-dispersed liquid crystal, the liquid crystals are arranged in an arbitrary direction when voltage is not applied, and a difference in refractive index between the liquid crystal and the polymer occurs, so that the incident light is scattered opaquely. Arranged and rearranged in one direction, it becomes equal to the refractive index of the polymer, and the incident light is transparently transmitted. That is, the display is driven in two states in which light is transmitted or scattered depending on whether or not voltage is applied. However, conventional polymer dispersed liquid crystals use nematic liquid crystals with high refractive index anisotropy to increase shielding properties and driving temperature of liquid crystals, so they have to have a narrow viewing angle in the transparent state (on state), so PDLC can be mounted on a large area. There was a limitation that the view from the side could be obscured and the image quality significantly deteriorated due to high scattering when used as a beam screen.
이에 한국 공개특허 제2020-0077705호에서는 저굴절률 이방성을 갖는 네마틱 액정의 함량을 증가시킨 액정 조성물을 제조하였다. 이러한 액정 조성물은 투과율과 광시야각을 어느 정도 향상시켰지만, 저굴절 액정 화합물의 함량이 일정 수준 이상으로 증가하면 전원이 인가되지 않은 상태에서 광특성이 현저하게 떨어진다는 한계가 존재하였다.Accordingly, Korean Patent Publication No. 2020-0077705 prepared a liquid crystal composition in which the content of nematic liquid crystals having low refractive index anisotropy was increased. Although this liquid crystal composition improved transmittance and a wide viewing angle to some extent, there was a limitation that when the content of the low-refractive liquid crystal compound increased to a certain level or more, optical properties were significantly deteriorated in a state in which power was not applied.
한편, 중국 공개특허 제2013-10070651호에서는 복굴절률을 조절하여 저전압 구동을 구현할 수 있는 액정 조성물을 제조하였으나, 전압이 인가되지 않았을 때 투과율과 측면 시야각은 개선하지 못하였다는 한계가 존재하였다.On the other hand, Chinese Patent Publication No. 2013-10070651 prepared a liquid crystal composition capable of implementing low-voltage driving by adjusting birefringence, but there was a limit in that transmittance and side viewing angle were not improved when no voltage was applied.
이에 본 발명자 등은 사이클로 헥실 구조를 갖는 액정 화합물을 특정 비율로 함유하는 액정 조성물을 제조하면 낮은 복굴절률을 나타냄과 동시에 전압이 인가되지 않았을 때(off state) 투과율과 측면 투과율이 현저하게 향상될 수 있음에 착안하여 본 발명을 완성하기에 이르렀다.Accordingly, the inventors of the present invention have prepared a liquid crystal composition containing a liquid crystal compound having a cyclohexyl structure in a specific ratio, which exhibits low birefringence and significantly improves transmittance and lateral transmittance when no voltage is applied (off state). In view of this, the present invention has been completed.
본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로, 본 발명의 목적은 사이클로헥실 구조의 액정 화합물을 일정 비율로 포함하는 액정 조성물과 이를 포함하여 낮은 수준의 복굴절률 및 우수한 off state 투과율과 광시야각을 나타내는 고분자 분산형 액정 조성물 및 광고 시스템을 제공하는 데 있다.The present invention has been made to solve the above problems, and an object of the present invention is a liquid crystal composition containing a liquid crystal compound of a cyclohexyl structure in a certain ratio, including a liquid crystal composition with a low level of birefringence and excellent off state transmittance and It is to provide a polymer dispersed liquid crystal composition and an advertising system exhibiting a wide viewing angle.
본 발명의 일 측면은 액정 조성물 전체 100 중량%에 대하여, 하기 화학식 1 내지 화학식 6으로 표현되는 액정 화합물로 이루어진 군으로부터 선택되는 1종 이상의 액정 화합물을 60 내지 90 중량%로 포함하는 액정 조성물을 제공한다.One aspect of the present invention provides a liquid crystal composition containing 60 to 90% by weight of one or more liquid crystal compounds selected from the group consisting of liquid crystal compounds represented by Formulas 1 to 6, based on 100% by weight of the total liquid crystal composition. do.
[화학식 1][Formula 1]
[화학식 2][Formula 2]
[화학식 3][Formula 3]
[화학식 4][Formula 4]
[화학식 5][Formula 5]
[화학식 6][Formula 6]
본 발명의 다른 측면은 상기 액정 조성물; 고분자 전구체; 및 광개시제;를 포함하는 고분자 분산형 액정 조성물을 제공한다.Another aspect of the present invention is the liquid crystal composition; polymer precursors; And a photoinitiator; it provides a polymer dispersed liquid crystal composition comprising a.
본 발명의 또 다른 측면은 상기 액정 조성물을 포함하는 고분자 분산형 액정 필름; 프로젝터; 및 반사부재;를 포함하는 광고 시스템을 제공한다.Another aspect of the present invention is a polymer dispersed liquid crystal film comprising the liquid crystal composition; projector; and a reflective member.
본 발명에 따른 액정 조성물은 사이클로헥실 구조의 액정 화합물을 특정 비율로 포함함으로써 고분자 분산형 액정 필름에 적용되어 낮은 복굴절률 및 우수한 광시야각과 off state 투과율을 나타낼 수 있다.The liquid crystal composition according to the present invention includes a liquid crystal compound having a cyclohexyl structure in a specific ratio and is applied to a polymer dispersed liquid crystal film to exhibit low birefringence, excellent wide viewing angle, and off state transmittance.
도 1은 본 발명에 따른 광고 시스템을 나타낸 모식도이다.
도 2는 본 발명에 따른 광고 시스템의 구성도를 나타낸 것이다.1 is a schematic diagram showing an advertisement system according to the present invention.
2 shows a configuration diagram of an advertising system according to the present invention.
이하 본 발명을 첨부된 도면 및 실시예와 함께 더욱 구체적으로 설명하도록 한다.Hereinafter, the present invention will be described in more detail with accompanying drawings and embodiments.
앞서 설명한 바와 같이 낮은 복굴절률을 가짐과 동시에 우수한 off state 투과율과 광시야각을 나타내는 액정 조성물은 존재하지 않았다. As described above, a liquid crystal composition having low birefringence and exhibiting excellent off-state transmittance and wide viewing angle at the same time did not exist.
이에 본 발명에서는 사이클로헥실 구조의 액정 화합물을 일정 비율로 포함하여 낮은 복굴절률을 가짐과 동시에 우수한 off state 투과율과 광시야각을 나타내는 액정 조성물을 제공한다. Accordingly, the present invention provides a liquid crystal composition including a liquid crystal compound having a cyclohexyl structure in a certain ratio and having low birefringence and exhibiting excellent off state transmittance and a wide viewing angle.
보다 구체적으로 본 발명은 액정 조성물 전체 100 중량%에 대하여, 하기 화학식 1 내지 화학식 6으로 표현되는 액정 화합물로 이루어진 군으로부터 선택되는 1종 이상의 액정 화합물을 60 내지 90 중량%로 포함하는 액정 조성물을 제공한다.More specifically, the present invention provides a liquid crystal composition comprising 60 to 90% by weight of one or more liquid crystal compounds selected from the group consisting of liquid crystal compounds represented by the following Chemical Formulas 1 to 6, based on 100% by weight of the total liquid crystal composition. do.
[화학식 1][Formula 1]
[화학식 2][Formula 2]
[화학식 3][Formula 3]
[화학식 4][Formula 4]
[화학식 5][Formula 5]
[화학식 6][Formula 6]
상기 화학식 1 내지 6으로 표현되는 액정 화합물은 사이클로 헥실기를 포함하여 낮은 복굴절률을 나타내어 본 발명에 따른 액정 조성물 또한 낮은 복굴절률을 가질 수 있다. 보다 구체적으로 본 발명에 따른 액정 조성물의 복굴절률은 0.16 이하일 수 있다. 상기 액정 조성물의 복굴절률이 0.16 이하일 때 고분자 분산형 액정에 적용되어 측면 투과율과 광시야각울 현저하게 향상시켜 위치 제한 없이 우수한 시인성을 나타낼 수 있으며, 불투명 상태(off state)에서 화질과 선명도를 현저하게 향상시킬 수 있다. Since the liquid crystal compounds represented by Chemical Formulas 1 to 6 contain a cyclohexyl group and exhibit low birefringence, the liquid crystal composition according to the present invention may also have low birefringence . More specifically, the birefringence of the liquid crystal composition according to the present invention may be 0.16 or less. When the birefringence of the liquid crystal composition is 0.16 or less, it can be applied to polymer dispersed liquid crystals to significantly improve side transmittance and wide viewing angle, thereby exhibiting excellent visibility without positional restrictions, and significantly improving image quality and clarity in an opaque state (off state). can improve
상기 액정 조성물 전체 100 중량%에 대하여 상기 화학식 1 내지 화학식 6으로 표현되는 액정 화합물로 이루어진 군으로부터 선택되는 1종 이상의 액정 화합물은 60 내지 90 중량%로 포함되는 것일 수 있다. 상기 화학식 1 내지 화학식 6으로 표현되는 액정 화합물로 이루어진 군으로부터 선택되는 1종 이상의 액정 화합물이 60 중량% 미만으로 포함되면, 액정 조성물의 복굴절률이 너무 높아지거나 광학특성이 현저하게 저하될 수 있고, 반대로 90 중량% 초과로 포함되면 고분자 분산형 액정(PDLC)을 제조함에 있어서, 경화 시 등방상(isotropic)으로 경화되지 않고 네마틱(nematic)상으로 상분리가 발생하여 외관에 결함이 생기거나 광학특성이 현저하게 저하될 수 있다. 또한 상기 문제점을 개선하기 위하여 프리 폴리머(pre-polymer)의 용해성을 높여 등방상으로 배합하더라도 분자량이 크게 떨어져 내구성이 현저하게 저하될 수 있다. 특히 상기 화학식 1 내지 화학식 6으로 표현되는 액정 화합물로 이루어진 군으로부터 선택되는 1종 이상의 액정 화합물이 상기 액정 조성물 전체 100 중량%에 대하여 83 내지 90 중량%로 포함될 때 불투명 상태에서 총 투과율이 80% 이상으로 현저하게 향상될 수 있다. 이로 인해 불투명 상태에서도 전파장대의 영역에서 투과되는 빛의 양이 증가하여 고분자 분산형 액정으로 적용 시 사용자의 육안으로 전달되는 빛의 양이 많아져 시인성이 현저하게 향상될 수 있다.One or more liquid crystal compounds selected from the group consisting of liquid crystal compounds represented by Chemical Formulas 1 to 6 may be included in an amount of 60 to 90% by weight based on 100% by weight of the liquid crystal composition. When one or more liquid crystal compounds selected from the group consisting of liquid crystal compounds represented by Formulas 1 to 6 are included in an amount of less than 60% by weight, the birefringence of the liquid crystal composition may be too high or the optical properties may be significantly deteriorated. On the contrary, if it is included in more than 90% by weight, in preparing the polymer dispersed liquid crystal (PDLC), it is not cured in an isotropic phase during curing, but phase separation occurs in a nematic phase, resulting in defects in appearance or optical properties This can be significantly reduced. In addition, in order to improve the above problems, even if the solubility of the pre-polymer is increased and isotropically blended, the molecular weight is greatly reduced, and durability may be significantly lowered. In particular, when one or more liquid crystal compounds selected from the group consisting of liquid crystal compounds represented by Chemical Formulas 1 to 6 are included in an amount of 83 to 90% by weight based on 100% by weight of the entire liquid crystal composition, the total transmittance in an opaque state is 80% or more can be significantly improved. As a result, even in an opaque state, the amount of light transmitted in the radio pole region increases, so when applied as a polymer dispersed liquid crystal, the amount of light transmitted to the user's naked eye increases, and visibility can be remarkably improved.
상기 액정 조성물은 하기 화학식 7 내지 10으로 표현되는 액정 화합물로 이루어진 군으로부터 선택되는 1종 이상의 액정 화합물을 더 포함할 수 있다. 하기 화학식 7 내지 10으로 표현되는 액정 화합물은 상대적으로 높은 굴절률 이방성을 가지고 있으나 프리 폴리머와 상용성을 향상시킬 수 있고 함량에 따라 액정 조성물의 활용범위를 넓힐 수 있다. 하기 화학식 7 내지 10으로 표현되는 액정 화합물은 활용범위와 상용성을 고려하여 전체 액정 조성물 100 중량%에 대하여 10 내지 40 중량%, 바람직하게는 10 내지 17 중량%로 포함될 수 있다.The liquid crystal composition may further include one or more liquid crystal compounds selected from the group consisting of liquid crystal compounds represented by Formulas 7 to 10 below. Liquid crystal compounds represented by Chemical Formulas 7 to 10 have relatively high refractive index anisotropy, but can improve compatibility with free polymers and can broaden the application range of liquid crystal compositions depending on the content. The liquid crystal compound represented by Chemical Formulas 7 to 10 may be included in an amount of 10 to 40% by weight, preferably 10 to 17% by weight, based on 100% by weight of the total liquid crystal composition in consideration of the application range and compatibility.
[화학식 7][Formula 7]
[화학식 8][Formula 8]
[화학식 9][Formula 9]
[화학식 10][Formula 10]
본 발명의 일 구현예에 따르면 상기 액정 조성물은 상기 화학식 1 내지 6으로 표현되는 액정 화합물 6 개를 모두 포함하는 것일 수 있다. 상기 화학식 1 내지 6으로 표현되는 액정 화합물 6 개를 모두 포함할 경우 결정화 현상이 현저하게 개선될 수 있다.According to one embodiment of the present invention, the liquid crystal composition may include all six liquid crystal compounds represented by Chemical Formulas 1 to 6. When all six liquid crystal compounds represented by Chemical Formulas 1 to 6 are included, the crystallization phenomenon can be remarkably improved.
상기 액정 조성물 전체 100 중량%에 대하여 상기 화학식 1로 표현되는 액정 화합물은 1 내지 25 중량%로 포함되고, 상기 화학식 2로 표현되는 액정 화합물은 1 내지 25 중량%로 포함되고, 상기 화학식 3로 표현되는 액정 화합물은 1 내지 15 중량%로 포함되고, 상기 화학식 4로 표현되는 액정 화합물은 1 내지 15 중량%로 포함되고, 상기 화학식 5로 표현되는 액정 화합물은 10 내지 25 중량%로 포함되고, 상기 화학식 6로 표현되는 액정 화합물은 10 내지 25 중량%로 포함되는 것일 수 있다. 상기 화학식 1 내지 6으로 표현되는 각각의 액정 화합물이 상기 중량% 범위로 포함될 때 액정 조성물의 TNI가 증가하여 활용범위가 증가하고 등방상을 유지할 수 있음을 확인하였다.The liquid crystal compound represented by Chemical Formula 1 is included in 1 to 25% by weight, and the liquid crystal compound represented by Chemical Formula 2 is included in 1 to 25% by weight, based on 100% by weight of the total liquid crystal composition, and represented by Chemical Formula 3 The liquid crystal compound is included in 1 to 15% by weight, the liquid crystal compound represented by Formula 4 is included in 1 to 15% by weight, the liquid crystal compound represented by Formula 5 is included in 10 to 25% by weight, and the The liquid crystal compound represented by Chemical Formula 6 may be included in an amount of 10 to 25% by weight. It was confirmed that when each of the liquid crystal compounds represented by Chemical Formulas 1 to 6 was included in the weight % range, the TNI of the liquid crystal composition increased, increasing the application range and maintaining an isotropic phase.
본 발명의 다른 측면은 상기 액정 조성물; 고분자 전구체; 및 광개시제;를 포함하는 고분자 분산형 액정 조성물을 제공한다.Another aspect of the present invention is the liquid crystal composition; polymer precursors; And a photoinitiator; it provides a polymer dispersed liquid crystal composition comprising a.
상기 고분자 분산형 액정 조성물 전체 100 중량%에 대하여 상기 액정 조성물은 30 내지 70 중량%, 바람직하게는 33 내지 60 중량%, 가장 바람직하게는 35 내지 45 중량%로 포함되는 것일 수 있다. 상기 액정 조성물이 30 중량% 미만으로 포함되면, 액정 방울의 크기 현저하게 줄어들어 낮은 헤이즈(haze)를 발생하게 되어 차폐 특성을 잃게 되거나 구동전압이 급격하게 상승할 수 있고, 반대로 70 중량% 초과로 포함되면, 고분자 분산형 액정 조성물에서 액정이 상분리 되거나 상용성을 잃어 결정화될 수 있다. 또한, 등방상에서 경화되더라도 액정 방울의 크기가 거대해지기 때문에 낮은 haze를 발생하게 되어 차폐 특성을 잃을 수 있다. The liquid crystal composition may be included in an amount of 30 to 70 wt%, preferably 33 to 60 wt%, and most preferably 35 to 45 wt%, based on 100 wt% of the polymer dispersed liquid crystal composition. When the liquid crystal composition is included in an amount of less than 30% by weight, the size of the liquid crystal droplets is significantly reduced, resulting in low haze, resulting in loss of shielding properties or a rapid increase in driving voltage. In this case, the liquid crystal may be phase separated in the polymer dispersed liquid crystal composition or may be crystallized due to loss of compatibility. In addition, even if cured in an isotropic phase, since the size of liquid crystal droplets becomes large, low haze may be generated and shielding properties may be lost.
상기 고분자 전구체는 NOA65(싸이올렌계 반응체), EB230(아크릴레이트 올리고머), EB264(아크릴레이트 올리고머), 에틸헥실 아크릴레이트(EHA), 하이드록시 에틸아크릴레이트(HEA), 1,6-헥사디올디아크릴레이트(HDDA) 및 트리메틸올프로판 트리아크릴레이(TMPTA)으로 이루어진 군으로부터 선택되는 1종 이상일 수 있다.The polymer precursor is NOA65 (thiolene-based reactant), EB230 (acrylate oligomer), EB264 (acrylate oligomer), ethylhexyl acrylate (EHA), hydroxyethyl acrylate (HEA), 1,6-hexadiol It may be at least one selected from the group consisting of diacrylate (HDDA) and trimethylolpropane triacrylate (TMPTA).
상기 광개시제는 2,4,6-트리메틸벤조일디페닐 포스핀 옥사이드(TPO) 및 비스(2,4,6-트리메틸벤조일)-페닐포스핀옥사이드(irgacure 819)로 이루어진 군으로부터 선택되는 1종 이상일 수 있다. The photoinitiator may be at least one selected from the group consisting of 2,4,6-trimethylbenzoyldiphenyl phosphine oxide (TPO) and bis(2,4,6-trimethylbenzoyl)-phenylphosphine oxide (irgacure 819) there is.
상기 광개시제는 고분자 전구체 100 중량부에 대하여 0.1 내지 3 중량부, 바람직하게는 0.5 내지 1.5 중량부로 혼합되는 것일 수 있다. 광개시제의 중량부가 상기 하한치 미만이면 중합이 충분히 유도되지 않아 액정 방울이 형성되지 않을 수 있고, 상기 상한치 초과이면 상분리 후에도 광개시제가 잔존하여 고분자 분산형 액정 조성물로부터 제조된 필름의 물성이 현저하게 저하될 수 있다.The photoinitiator may be mixed in an amount of 0.1 to 3 parts by weight, preferably 0.5 to 1.5 parts by weight, based on 100 parts by weight of the polymer precursor. If the weight part of the photoinitiator is less than the lower limit, polymerization may not be sufficiently induced and liquid crystal droplets may not be formed. If the weight part exceeds the upper limit, the photoinitiator remains even after phase separation, and the physical properties of the film prepared from the polymer dispersed liquid crystal composition may be significantly deteriorated. .
본 발명에 따른 고분자 분산형 액정 조성물로부터 제조된 고분자 분산형 액정 필름은 상기 액정 조성물을 포함하여 off state 투과율(전압을 인가하지 않은 상태에서 투과율)이 78% 이상이고, 110 V의 전압이 인가되었을 때 투과율이 84% 이상일 수 있다. 또한, 측면 투과율이 현저히 향상되어 우수한 광시야각을 나타낼 수 있다. 이때 상기 고분자 분산형 액정 필름은 상기 고분자 분산형 액정 조성물을 중합하여 상분리를 유도하는 중합유도상분리(PIPS) 방법에 의해 제조된 것일 수 있다. The polymer dispersed liquid crystal film prepared from the polymer dispersed liquid crystal composition according to the present invention has an off state transmittance (transmittance in a state where no voltage is applied) of 78% or more, including the liquid crystal composition, and a voltage of 110 V is applied. When the transmittance may be 84% or more. In addition, the lateral transmittance is remarkably improved, so that an excellent wide viewing angle may be exhibited. In this case, the polymer dispersed liquid crystal film may be manufactured by a polymerization induced phase separation (PIPS) method in which phase separation is induced by polymerizing the polymer dispersed liquid crystal composition.
본 발명의 또 다른 측면은 상기 액정 조성물을 포함하는 고분자 분산형 액정 필름; 프로젝터; 및 반사부재;를 포함하는 광고 시스템을 제공한다.Another aspect of the present invention is a polymer dispersed liquid crystal film comprising the liquid crystal composition; projector; and a reflective member.
도 1은 본 발명에 따른 광고시스템을 나타낸 것으로, 이를 참조하면 상기 프로젝터는 사용자가 출력하기 원하는 광고정보를 고분자 분산형 액정 필름에 조사하여 표시할 수 있다. 또한, 상기 반사부재는 고분자 분산형 액정 필름에 부착되어 고분자 분산형 액정 전면에 광고정보가 표시될 수 있도록 빛을 반사시키고 반사량을 조절하여 출력 광고정보의 선명도를 더욱 향상시킬 수 있다. 상기 광고정보는 영상 또는 이미지일 수 있다.1 shows an advertisement system according to the present invention. Referring to this, the projector can display advertisement information that a user wants to output by irradiating a polymer dispersed liquid crystal film. In addition, the reflective member may be attached to the polymer dispersed liquid crystal film to reflect light so that advertisement information may be displayed on the front surface of the polymer dispersed liquid crystal and adjust the amount of reflection to further improve the clarity of output advertisement information. The advertisement information may be a video or image.
본 발명의 광고 시스템은 낮은 복굴절률 및 우수한 off state 투과율을 나타내는 액정 조성물을 포함하여 고굴절률 액정 조성물로 제조된 고분자 분산형 액정 필름보다 광원으로부터 많은 양의 빛을 투과하여 시인성과 화질이 현저하게 향상될 수 있다. 또한 측면 투과율이 현저하게 향상되어 프로젝터 위치 제한 없이 우수한 영상 화질을 출력할 수 있다.The advertising system of the present invention includes a liquid crystal composition exhibiting low birefringence and excellent off-state transmittance, and significantly improves visibility and image quality by transmitting a large amount of light from a light source than a polymer dispersed liquid crystal film made of a high refractive index liquid crystal composition. It can be. In addition, the lateral transmittance is significantly improved, so that excellent image quality can be output without limiting the location of the projector.
도 2는 본 발명에 따른 광고 시스템의 구성도를 나타낸 것으로서, 이를 참조하면 본 발명의 광고 시스템은 제어모듈을 더 포함할 수 있다. 또한 상기 제어모듈은 전압 제어부, 프로젝터 제어부 및 센서모듈을 포함하는 것일 수 있다.2 shows a configuration diagram of an advertisement system according to the present invention. Referring to this, the advertisement system of the present invention may further include a control module. In addition, the control module may include a voltage controller, a projector controller, and a sensor module.
상기 전압 제어부는 상기 고분자 분산형 액정에 인간되는 전압을 제어하는 것으로서 상기 고분자 분산형 액정 필름은 상기 전압 제어부에 의해 전압 인가시 투명 상태로 전환되며, 전압 미인가시 불투명 상태로 전환되는 것일 수 있다. 이를 통해 상기 전압 제어부는 광고정보를 출력하거나 차단하는 것을 조절할 수 있다. The voltage controller controls the voltage applied to the polymer dispersed liquid crystal, and the polymer dispersed liquid crystal film may be converted into a transparent state when a voltage is applied by the voltage controller and converted into an opaque state when no voltage is applied. Through this, the voltage control unit can control whether to output or block advertisement information.
상기 프로젝터 제어부는 사용자가 출력하고자 하는 광고정보를 수신하여 상기 프로젝터에 송신하고 프로젝터의 투사각을 조절하여 원하는 위치에 광고정보를 출력하는 것일 수 있다.The projector control unit may receive advertisement information that a user wants to output, transmit the advertisement information to the projector, and output the advertisement information to a desired location by adjusting a projection angle of the projector.
상기 센서모듈은 광고 시스템 주변 환경을 인식하는 것으로서 주변 사물 또는 인물의 존재 유무, 속도 또는 거리를 인식하는 것일 수 있다. 또한 상기 프로젝터 제어부 또는 전압 제어부 중 어느 하나 이상의 제어부와 연동되어 주변 환경에 따라 상기 프로젝터 제어부 또는 전압 제어부 중 어느 하나 이상의 동작을 제어하여 광고정보 출력을 제어할 수 있다. 본 발명의 일 구체예에 따르면, 상기 센서모듈은 상기 고분자 분산형 액정 필름을 향한 보행자의 접근을 감지하고, 상기 프로젝터 제어부 또는 전압 제어부 중 어느 하나 이상의 제어부는 상기 센서모듈에 보행자의 접근이 감지되면 광고정보를 출력하고, 보행자의 접근이 감지되지 않으면 광고정보 출력을 중지하는 것일 수 있다. The sensor module recognizes the surrounding environment of the advertising system, and may recognize the existence, speed, or distance of surrounding objects or people. In addition, it is interlocked with at least one of the projector controller and voltage controller to control the output of advertisement information by controlling the operation of at least one of the projector controller and voltage controller according to the surrounding environment. According to one embodiment of the present invention, the sensor module detects the approach of a pedestrian toward the polymer dispersed liquid crystal film, and if one or more controllers of the projector control unit or voltage control unit detects the pedestrian's approach to the sensor module, The advertisement information may be output, and if the approach of a pedestrian is not detected, the advertisement information output may be stopped.
상기 광고 시스템은 상기 제어모듈과 연동 가능하고 상기 고분자 분산형 액정 필름 및 상기 프로젝터를 원격으로 제어할 수 있는 단말기를 더 포함할 수 있다. 상기 단말기는 상기 고분자 분산형 액정 필름의 온(on)/오프(off) 구동 제어 및 디밍(dimming) 기능을 수행하는 것일 수 있다. 이때 상기 단말기는 리모트 컨트롤러 또는 스마트기기인 것일 수 있다.The advertisement system may further include a terminal capable of interlocking with the control module and remotely controlling the polymer dispersed liquid crystal film and the projector. The terminal may perform on/off driving control and dimming functions of the polymer dispersed liquid crystal film. At this time, the terminal may be a remote controller or a smart device.
실시예 1 내지 3Examples 1 to 3
액정 조성물 제조Liquid crystal composition preparation
하기 표 1은 실시예 1 내지 3의 액정 조성물을 제조할 때 사용한 액정 화합물의 종류 및 배합비(중량%)와 이를 통해 제조된 액정 조성물의 복굴절률(△n)을 나타낸 것이다.Table 1 below shows the types and blending ratios (wt%) of the liquid crystal compounds used in preparing the liquid crystal compositions of Examples 1 to 3 and the birefringence (Δn) of the liquid crystal compositions prepared therefrom.
(DI001)Example 1
(DI001)
(DI002)Example 2
(DI002)
(DI003)Example 3
(DI003)
고분자 전구체 제조Polymer precursor manufacturing
하기 표 2는 고분자 전구체의 배합비를 나타낸 것으로, 하기 표 2에 나타낸 배합비에 따라 고분자 전구체를 제조하였다. 그 다음 앞서 제조한 실시예 1 내지 3의 액정 조성물과 상기 고분자 전구체를 4:6 중량비로 혼합한 후, 상기 고분자 전구체 100 중량부에 대하여 1 중량부에 해당하는 2,4,6-트리메틸벤조일디페닐 포스핀 옥사이드(TPO, 광개시제)를 첨가하여 고분자 분산형 액정 조성물을 제조하였다.Table 2 below shows the mixing ratio of polymer precursors, and the polymer precursor was prepared according to the mixing ratio shown in Table 2 below. Then, after mixing the previously prepared liquid crystal composition of Examples 1 to 3 and the polymer precursor at a weight ratio of 4:6, 2,4,6-trimethylbenzoyldi corresponding to 1 part by weight based on 100 parts by weight of the polymer precursor A polymer dispersed liquid crystal composition was prepared by adding phenyl phosphine oxide (TPO, photoinitiator).
고분자 분산형 액정 필름 제조Manufacture of polymer dispersed liquid crystal film
상기 제조된 고분자 분산형 액정 조성물에 20 ㎛의 지름을 갖는 폴리메틸 메타크릴레이트(PMMA) 소재의 스페이서(spacer)를 첨가하고, ITO가 증착된 필름, 유리에 도포하여 상판과 하판의 기재를 합지 후 1.5 mW/cm2의 광도를 갖는 경화기에서 3 분간 조사하여 경화에 의해 상분리를 유도하는 중합유도상분리(polymerization induced phase separation, PIP) 방법으로 고분자 분산형 액정 필름을 제조하였다.A spacer made of polymethyl methacrylate (PMMA) having a diameter of 20 μm was added to the polymer dispersed liquid crystal composition prepared above, and applied to an ITO-deposited film or glass to laminate the upper and lower substrates. Then, a polymer dispersed liquid crystal film was prepared by a polymerization induced phase separation (PIP) method in which phase separation is induced by irradiation in a curing device having a light intensity of 1.5 mW/cm 2 for 3 minutes.
비교예 1 내지 2Comparative Examples 1 to 2
merk 사의 E7(비교예 1) 및 BL038(비교예 2)을 액정 조성물로 이용한 것을 제외하고, 상기 실시예와 동일하게 고분자 분산형 액정 조성물 및 고분자 분산형 액정 필름을 제조하였다.A polymer dispersed liquid crystal composition and a polymer dispersed liquid crystal film were prepared in the same manner as in the above example, except that Merk's E7 (Comparative Example 1) and BL038 (Comparative Example 2) were used as liquid crystal compositions.
하기 표 3은 merk 사의 E7 및 BL038의 배합비(중량%)와 복굴절률(△n)을 나타낸 것으로, BL038의 배합비는 알려져 있지 않아 나타내지 않았다.Table 3 below shows the blending ratio (wt%) and birefringence (Δn) of E7 and BL038 from merk, which is not shown because the blending ratio of BL038 is unknown.
(E7)Comparative Example 1
(E7)
(BL038)Comparative Example 2
(BL038)
N
K
N
O
W
NU
N
K
N
O
W
N
하기 표 4는 상기 실시예 1 내지 3 및 비교예 1 내지 2의 액정 조성물을 제조할 때 사용한 모든 액정 화합물의 명칭 및 카스 번호를 나타낸 것이다.Table 4 below shows the names and CAS numbers of all liquid crystal compounds used in preparing the liquid crystal compositions of Examples 1 to 3 and Comparative Examples 1 to 2.
실험예 1Experimental Example 1
상기 실시예1 내지 3 및 비교예 1 내지 2에서 제조된 고분자 분산형 액정 필름의 헤이즈, 정면 투과율 및 45°측면 투과율을 측정하여 하기 표 5 내지 7에 나타내었다.The haze, front transmittance, and 45° side transmittance of the polymer dispersed liquid crystal films prepared in Examples 1 to 3 and Comparative Examples 1 to 2 were measured and are shown in Tables 5 to 7 below.
(비교예1)#BL038
(Comparative Example 1)
(비교예2)#E7
(Comparative Example 2)
(실시예1)#DI001
(Example 1)
(실시예2)#DI002
(Example 2)
(실시예3)#DI003
(Example 3)
상기 표 5는 상기 실시예1 내지 3 및 비교예 1 내지 2에서 제조된 고분자 분산형 액정 필름의 헤이즈를 나타낸 것으로, 이를 참조하면, 헤이즈 값이 비교예 1 내지 2에 비하여 상기 실시예 1 내지 3에서 더 낮은 값을 나타내어 본 발명의 액정 조성물의 광원의 투과도는 높은 복굴절을 갖는 액정 조성물을 사용한 상기 비교예 1 내지 2 보다 현저히 높기 때문에 시인성이 큰 폭으로 향상될 수 있음을 확인하였다.Table 5 shows the haze of the polymer dispersed liquid crystal films prepared in Examples 1 to 3 and Comparative Examples 1 to 2. Referring to this, the haze value of Examples 1 to 3 is higher than that of Comparative Examples 1 to 2. Since the transmittance of the light source of the liquid crystal composition of the present invention is significantly higher than that of Comparative Examples 1 and 2 using the liquid crystal composition having high birefringence, it was confirmed that the visibility can be greatly improved.
(비교예1)#BL038
(Comparative Example 1)
(비교예2)#E7
(Comparative Example 2)
(실시예1)#DI001
(Example 1)
(실시예2)#DI002
(Example 2)
(실시예3)#DI003
(Example 3)
상기 표 6은 상기 실시예1 내지 3 및 비교예 1 내지 2에서 제조된 고분자 분산형 액정 필름의 정면 투과율 측정 결과를 나타낸 것으로, 이를 참조하면, 상기 실시예 1 내지 3에서 제조된 고분자 분산형 액정 필름이 상기 비교예 1 내지 2보다 우수한 투과율을 나타냄을 알 수 있으며, 특히 전압을 인가하지 않은 상태(off state)에서 투과율이 매우 우수하여 75% 이상을 나타내는 것을 확인할 수 있다.Table 6 shows the front transmittance measurement results of the polymer dispersed liquid crystal films prepared in Examples 1 to 3 and Comparative Examples 1 to 2. Referring to this, the polymer dispersed liquid crystals prepared in Examples 1 to 3 are shown. It can be seen that the film exhibits excellent transmittance compared to Comparative Examples 1 and 2, and in particular, it can be confirmed that the transmittance is very excellent and shows 75% or more in an off state.
(650nm,%)45°transmittance
(650nm,%)
(비교예1)#BL038
(Comparative Example 1)
(비교예2)#E7
(Comparative Example 2)
(실시예1)#DI001
(Example 1)
(실시예2)#DI002
(Example 2)
(실시예3)#DI003
(Example 3)
상기 표 7은 상기 실시예 1 내지 3 및 비교예 1 내지 2에서 제조된 고분자 분산형 액정 필름의 45°측면 투과율 측정 결과를 나타낸 것으로, 이를 참조하면, 상기 실시예 1 내지 3에서 제조된 고분자 분산형 액정 필름은 상기 비교예 1 내지 2보다 전압 인가 전후 모두 현저하게 향상된 측면 투과율을 나타내어 광시야각이 우수함을 알 수 있다. Table 7 shows the 45° lateral transmittance measurement results of the polymer dispersed liquid crystal films prepared in Examples 1 to 3 and Comparative Examples 1 to 2. Referring to this, the polymer dispersions prepared in Examples 1 to 3 It can be seen that the type liquid crystal film exhibits significantly improved lateral transmittance both before and after voltage application compared to Comparative Examples 1 and 2 , and thus has excellent wide viewing angle.
Claims (20)
[화학식 1]
[화학식 2]
[화학식 3]
[화학식 4]
[화학식 5]
[화학식 6]
[Formula 1]
[Formula 2]
[Formula 3]
[Formula 4]
[Formula 5]
[Formula 6]
[화학식 7]
[화학식 8]
[화학식 9]
[화학식 10]
[Formula 7]
[Formula 8]
[Formula 9]
[Formula 10]
상기 화학식 1로 표현되는 액정 화합물은 1 내지 25 중량%로 포함되고,
상기 화학식 2로 표현되는 액정 화합물은 1 내지 25 중량%로 포함되고,
상기 화학식 3로 표현되는 액정 화합물은 1 내지 15 중량%로 포함되고,
상기 화학식 4로 표현되는 액정 화합물은 1 내지 15 중량%로 포함되고,
상기 화학식 5로 표현되는 액정 화합물은 10 내지 25 중량%로 포함되고,
상기 화학식 6로 표현되는 액정 화합물은 10 내지 25 중량%로 포함되는 것을 특징으로 하는 액정 조성물.The method of claim 5, based on 100% by weight of the liquid crystal composition,
The liquid crystal compound represented by Formula 1 is included in an amount of 1 to 25% by weight,
The liquid crystal compound represented by Chemical Formula 2 is included in an amount of 1 to 25% by weight,
The liquid crystal compound represented by Chemical Formula 3 is included in an amount of 1 to 15% by weight,
The liquid crystal compound represented by Chemical Formula 4 is included in an amount of 1 to 15% by weight,
The liquid crystal compound represented by Chemical Formula 5 is included in 10 to 25% by weight,
The liquid crystal composition, characterized in that the liquid crystal compound represented by the formula (6) is included in 10 to 25% by weight.
고분자 전구체; 및
광개시제;를 포함하는 고분자 분산형 액정 조성물.The liquid crystal composition according to any one of claims 1 to 6;
polymer precursors; and
Photoinitiator; Polymer dispersed liquid crystal composition containing a.
프로젝터; 및
반사부재;를 포함하는 광고 시스템.A polymer dispersed liquid crystal film comprising the liquid crystal composition according to any one of claims 1 to 6;
projector; and
An advertising system including a reflective member.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020210129653A KR102677208B1 (en) | 2021-09-30 | Liquid crystal composition, polymer dispered liquid crystal composition and advertisement system comprising the same | |
| PCT/KR2021/016372 WO2023054799A2 (en) | 2021-09-30 | 2021-11-11 | Liquid crystal composition, polymer-dispersed liquid crystal composition containing same, and advertisement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020210129653A KR102677208B1 (en) | 2021-09-30 | Liquid crystal composition, polymer dispered liquid crystal composition and advertisement system comprising the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20230046547A true KR20230046547A (en) | 2023-04-06 |
| KR102677208B1 KR102677208B1 (en) | 2024-06-21 |
Family
ID=
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200077705A (en) | 2018-12-21 | 2020-07-01 | 이상섭 | Pdlc composition and pdlc film using thereof |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200077705A (en) | 2018-12-21 | 2020-07-01 | 이상섭 | Pdlc composition and pdlc film using thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023054799A3 (en) | 2023-08-17 |
| WO2023054799A2 (en) | 2023-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5296952A (en) | Double-layer liquid crystal device having a three dimensional network structure | |
| JP5659512B2 (en) | Light control liquid crystal composition, and photocured product and light control device | |
| JP2003253265A (en) | Material for forming light-controlling layer and liquid crystal device | |
| JP2807172B2 (en) | LCD light shutter | |
| JP2016534176A (en) | Liquid crystal polymer composition, method for producing the same and liquid crystal article comprising the same | |
| WO2022158493A1 (en) | Liquid-crystal composition containing anthraquinone compound and light-modulating element | |
| WO2018072399A1 (en) | Method for preparing intelligent display film having switchable viewing angle and composite film containing display film | |
| CN208351195U (en) | Structural body, transparent display, lighting device, liquid crystal display device and information display device | |
| Jeon et al. | Effects of curing temperature on switching between transparent and translucent states in a polymer-stabilized liquid-crystal cell | |
| EP4269534A1 (en) | Anthraquinone compound containing liquid crystal composition for controlling light, photocured product thereof, and light-controlling element | |
| KR100812276B1 (en) | Prepolymer formulation and polymer dispersed liquid crystal using the same | |
| JPH08500681A (en) | Paper white PDLC system | |
| KR102677208B1 (en) | Liquid crystal composition, polymer dispered liquid crystal composition and advertisement system comprising the same | |
| KR20230046547A (en) | Liquid crystal composition, polymer dispered liquid crystal composition and advertisement system comprising the same | |
| KR101212404B1 (en) | Prepolymer composition for a polymer dispersed liquid crystal and composite membrane and film being formed by using the same | |
| KR102316331B1 (en) | Pdlc composition and pdlc film using thereof | |
| JPH0588150A (en) | Liquid crystal display device | |
| US20240140907A1 (en) | Anthraquinone compound, liquid crystal composition containing said compound, and dimming element | |
| KR101469494B1 (en) | Polymer dispersed liquid crystal composition comprising photoluminescent and process for preparing the same | |
| JPH0968701A (en) | Liquid crystal device | |
| JP3864429B2 (en) | LCD device | |
| JPH08160386A (en) | Liquid crystal display device | |
| JP3799654B2 (en) | Liquid crystal optical element, manufacturing method thereof, and projection type liquid crystal display device | |
| CN113589573B (en) | Intelligent liquid crystal dimming film capable of sensing ambient light change | |
| JP3512373B2 (en) | Polymer union liquid crystal for liquid crystal display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| E902 | Notification of reason for refusal | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant |