KR102128242B1 - 콜레스테릭 액정 매질 및 액정 디스플레이 - Google Patents
콜레스테릭 액정 매질 및 액정 디스플레이 Download PDFInfo
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- KR102128242B1 KR102128242B1 KR1020130023371A KR20130023371A KR102128242B1 KR 102128242 B1 KR102128242 B1 KR 102128242B1 KR 1020130023371 A KR1020130023371 A KR 1020130023371A KR 20130023371 A KR20130023371 A KR 20130023371A KR 102128242 B1 KR102128242 B1 KR 102128242B1
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Classifications
-
- 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
-
- 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
- C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
-
- 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
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal Substances (AREA)
Abstract
Description
Claims (16)
- A) 하나 이상의 중합가능하지 않은 메소젠성 화합물
B) 하나 이상의 중합가능한 키랄 화합물, 및
C) 하나 이상의 중합가능한 비-키랄 화합물
을 포함하는 것을 특징으로 하는 액정 매질. - 제 1 항에 있어서,
0.150 이상의 광학 이방성(Δn)을 갖는 것을 특징으로 하는 액정 매질. - 제 1 항에 있어서,
상기 중합가능한 키랄 화합물이 각각 단독으로 또는 서로 조합되어 20 μm-1 이상의 나선 비틀림력 절대값(|HTP총|)을 갖는 것을 특징으로 하는, 액정 매질. - 제 1 항에 있어서,
상기 중합가능한 키랄 화합물이 중합가능한 키랄 메소젠성 화합물을 포함하는 것을 특징으로 하는, 액정 매질. - 제 1 항에 있어서,
상기 중합가능한 키랄 화합물이 하기 일반식 CRM의 군 중에서 선택된 화합물을 포함하는 것을 특징으로 하는, 액정 매질:
상기 식에서,
R0*은 H 또는 P0이며, P0은 중합가능한 기이고,
A0 및 B0은, 여러번 나오는 경우 서로 독립적으로, 비치환되거나 1, 2, 3 또는 4개의 상기 정의된 바와 같은 기 L로 치환된 1,4-페닐렌, 또는 트랜스-1,4-사이클로헥실렌이고,
X1 및 X2는 서로 독립적으로, -O-, -COO-, -OCO-, -O-CO-O- 또는 단일 결합이고,
Z0*은 여러번 나오는 경우 서로 독립적으로, -COO-, -OCO-, -O-CO-O-, -OCH2-, -CH2O-, -CF2O-, -OCF2-, -CH2CH2-, -(CH2)4-, -CF2CH2-, -CH2CF2-, -CF2CF2-, -C≡C-, -CH=CH-, -CH=CH-COO-, -OCO-CH=CH- 또는 단일 결합이고,
t는 서로 독립적으로, 0, 1, 2 또는 3이고,
a는 0, 1 또는 2이고,
b는 0 또는 1 내지 12의 정수이고,
z는 0 또는 1이고,
이때, 나프탈렌 고리는 하나 이상의 동일하거나 상이한 기 L로 추가로 치환될 수 있고,
L은 서로 독립적으로, F, Cl, CN, 1 내지 5개의 탄소 원자를 갖는 할로겐화된 알킬, 알콕시, 알킬카본일, 알콕시카본일, 알킬카본일옥시 또는 알콕시카본일옥시이다. - 제 1 항에 있어서,
상기 중합가능한 비-키랄 화합물이, 중합가능한 비-키랄 메소젠성 화합물을 포함하는 것을 특징으로 하는, 액정 매질. - 제 1 항에 있어서,
상기 중합가능한 키랄 화합물이 하기 일반식 RM의 군 중에서 선택된 화합물을 포함하는 것을 특징으로 하는, 액정 매질:
상기 식에서,
Z1 및 Z2는 각각의 경우 서로 독립적으로, -COO-, -OCO-, -CH2CH2-, -CF2O-, -OCF2-, -C≡C-, -CH=CH-, -OCO-CH=CH-, -CH=CH-COO- 또는 단일 결합이고,
P0은 일반식 CRM에서 주어진 의미를 갖고,
L은 일반식 CRM에서 주어진 의미를 갖고,
r은 각각의 경우 서로 독립적으로, 0, 1, 2, 3 또는 4이고,
x 및 y는 서로 독립적으로, 0 또는 1 내지 12 사이의 동일하거나 상이한 정수이고,
u 및 v는 0 또는 1이며, 이때 u 또는 v는, 인접한 x 또는 y가 0인 경우 0이다. - 제 1 항에 있어서,
상기 중합가능하지 않은 메소젠성 화합물이, 하기 일반식 I 내지 V의 군으로부터 선택된 하나 이상의 화합물을 포함하는 것을 특징으로 하는, 액정 매질:
I
[상기 식에서,
R1은 알킬, 알콕시, 플루오르화된 알킬 또는 플루오르화된 알콕시, 알켄일, 알켄일옥시, 알콕시알킬, 플루오르화된 알켄일 또는 플루오르화된 알켄일옥시이고,
는 또는 이고,
L11 및 L12는 서로 독립적으로, H 또는 F이고,
X11은 CN 또는 NCS이고,
i는 0 또는 1이다];
II
III
[상기 식에서,
R2 및 R3은 서로 독립적으로, 1 내지 7개의 탄소 원자를 갖는 알킬, 알콕시, 플루오르화된 알킬 또는 플루오르화된 알콕시, 2 내지 7개의 탄소 원자를 갖는 알켄일, 알켄일옥시, 알콕시알킬 또는 플루오르화된 알켄일이고,
내지 는 서로 독립적으로,
또는 이고,
L21, L22, L31 및 L32는 H 또는 F이고,
X21 및 X31은 서로 독립적으로, 할로겐, 1 내지 3개의 탄소 원자를 갖는 할로겐화된 알킬 또는 알콕시, 또는 2 내지 3개의 탄소 원자를 갖는 할로겐화된 알켄일 또는 알켄일옥시이고,
Z31은 -CH2CH2-, -CF2CF2-, -COO-, 트랜스-CH=CH-, 트랜스-CF=CF-, -CH2O- 또는 단일 결합이고,
l, m, n 및 o는 서로 독립적으로, 0 또는 1이다];
IV
V
[상기 식에서,
R41 내지 R52는 서로 독립적으로, 일반식 II에서 R2에 대해 주어진 의미를 갖고,
및 는 서로 독립적으로, 및 가 2개 존재하는 경우 이들 또한 서로 독립적으로,
또는 이고,
및 는 서로 독립적으로, 및 가 2개 존재하는 경우 이들 또한 서로 독립적으로,
이고,
Z41 내지 Z52는 서로 독립적으로, Z41 및/또는 Z51이 2개 존재하는 경우 이들 또한 서로 독립적으로, -CH2CH2-, -COO-, 트랜스-CH=CH-, 트랜스-CF=CF-, -CH2O-, -CF2O-, -C≡C- 또는 단일 결합이고,
p 및 q는 서로 독립적으로, 0, 1 또는 2이다]. - 제 1 항에 있어서,
키랄 중합가능한 화합물을 총 혼합물의 0.1% 이상 내지 10% 이하의 총 농도로 포함하고 비-키랄 중합가능한 화합물을 총 혼합물의 0.1% 이상 내지 10% 이하의 총 농도로 포함하는 것을 특징으로 하는 액정 매질. - 제 1 항에 있어서,
하나 이상의 중합 조절자를 추가로 포함하는 것을 특징으로 하는 액정 매질. - 제 1 항에 있어서,
전자기 스펙트럼의 가시광 범위 내에 반사된 파장의 밴드폭을 갖는 것을 특징으로 하는 액정 매질. - 제 7 항에 있어서,
L이 각각의 경우 서로 독립적으로, F, Cl, CN 또는 1 내지 5개의 탄소 원자를 갖는 임의적으로 할로겐화된 알킬, 알콕시, 알킬카본일, 알콕시카본일, 알킬카본일옥시 또는 알콕시카본일옥시로부터 선택되는, 액정 매질. - 하나 이상의 중합가능하지 않은 메소젠성 화합물, 및 제 1 항 내지 제 12 항 중 어느 한 항에 따른 매질로부터 수득가능한 중합체를 포함하는 복합 물질.
- 제 13 항에 따른 복합 물질을 포함하는 것을 특징으로 하는 액정 디스플레이.
- 제 13 항에 따른 복합 물질을 제조하는 방법으로서, 상기 매질에서 중합체 전구체의 중합에 의해 제조하는 방법.
- 제 1 항 내지 제 12 항 중 어느 한 항에 따른 액정 매질을 포함하는 것을 특징으로 하는 액정 디스플레이.
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