KR970065688A - Liquid crystal display Side-chain type ferroelectric polymer liquid crystal for liquid crystal alignment film - Google Patents

Liquid crystal display Side-chain type ferroelectric polymer liquid crystal for liquid crystal alignment film Download PDF

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KR970065688A
KR970065688A KR1019960008519A KR19960008519A KR970065688A KR 970065688 A KR970065688 A KR 970065688A KR 1019960008519 A KR1019960008519 A KR 1019960008519A KR 19960008519 A KR19960008519 A KR 19960008519A KR 970065688 A KR970065688 A KR 970065688A
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South Korea
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liquid crystal
chain type
type ferroelectric
side chain
crystal display
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KR1019960008519A
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Korean (ko)
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KR100373836B1 (en
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진성호
선양국
이종천
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윤종용
삼성전관 주식회사
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    • 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
    • C09K19/0225—Ferroelectric
    • 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
    • C09K19/0241—Ferrielectric; Ferromagnetic
    • 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
    • C09K19/38—Polymers
    • 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

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Substances (AREA)

Abstract

하기의 구조식(I)로 나타내어지는 측쇄형 강유전성 고분자액정은 기판에 대하여 매우 우수한 접착력을 가지고 내열성, 내습성, 내화학성 등의 내환경성이 우수하며 액정 배향특성이 양호하여 액정표시소자로서의 특성을 향상시킬 수 있어서, 비틀린네마틱형, 초비틀린네마틱형 액정표시소자뿐만 아니라 균일한 배향제어가 어려운 표면안정화 강유전성 액정소자의 배향제로 사용하여 제조된 액정표시소자는 핀홀이나 기타 결함이 아주 적은 균일한 액정배향막을 형성하며 높은 프레틸트각뿐만 아니라 메모리 효과 및 콘트라스트비가 우수하다.The side chain type ferroelectric liquid crystal liquid crystal represented by the following structural formula (I) has excellent adhesion to substrates and is excellent in resistance to heat, humidity and chemical resistance and has good liquid crystal alignment properties, thereby improving the properties as a liquid crystal display device The liquid crystal display device manufactured by using the twisted nematic type super twisted nematic liquid crystal display device as well as the surface stabilized ferroelectric liquid crystal device which is difficult to uniformly control the alignment can be manufactured by using a liquid crystal alignment film having a pinhole, And has a high memory effect and a high contrast ratio as well as a high pretilt angle.

상기 식에서 R1은 알킬옥시기이고 R2는 지방족 또는 방향족 바이사이클릭링, 그리고 R3는 알콕시기이며 p는 10~150인 정수이다.Wherein R 1 is an alkyloxy group, R 2 is an aliphatic or aromatic bicyclic ring, and R 3 is an alkoxy group and p is an integer of 10 to 150.

Description

액정디스플레이 액정배향막용 측쇄형 강유전성 고분자액정Liquid crystal display Side-chain type ferroelectric polymer liquid crystal for liquid crystal alignment film

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 본 발명의 실시예에 의하여 측쇄형 강유전성 고분자액정(Side Chain Ferroelectric Liquid Crystal Polymer: SCFLCP)을 이용하여 제작한 강유전성 액정디스플레이(Ferroelectric Liquid Crystal Display:FLCD)의 액정배향 상태에서 펄스 높이 +20V, 펄스폭 50㎲, 주파수 60Hz인 전계하에서의 전기광학특성을 나타낸 그래프, 제2도는 본 발명의 실시예에 의하여 강유전성 고분자액정을 이용하여 제작한 강유전성 액정디스플레이의 전계안정화의 실시 전(A) 그리고 후(B)의 액정배향 상태를 나타낸 사진, 제3도는 본 발명의 비교예에 의하여 제작한 강유전성 액정디스플레이의 액정배향상태에서 펄스 높이 +20V, 펄스폭 50㎲, 주파수 60 Hz인 전계하에서의 전기광학특성을 나타낸 그래프, 제4도는 본 발명의 비교예에서 제작한 강유전성 액정디스플레이의 액정배향 상태를 나타낸 사진.FIG. 1 is a graph showing the relationship between a pulse height and a voltage of 20 V in a liquid crystal alignment state of a ferroelectric liquid crystal display (FLCD) fabricated using a side chain ferroelectric liquid crystal polymer (SCFLCP) according to an embodiment of the present invention. , A pulse width of 50 μs and a frequency of 60 Hz. FIG. 2 is a graph showing the electro-optical characteristics before and after the electric field stabilization of the ferroelectric liquid crystal display manufactured using the ferroelectric polymer liquid crystal according to the embodiment of the present invention. (B), FIG. 3 is a photograph showing the electro-optical characteristics under the electric field of a pulse height of + 20V, a pulse width of 50 mu s and a frequency of 60 Hz in the liquid crystal alignment state of the ferroelectric liquid crystal display manufactured by the comparative example of the present invention And FIG. 4 is a photograph showing the liquid crystal alignment state of the ferroelectric liquid crystal display manufactured in the comparative example of the present invention.

Claims (7)

하기의 구조식(I)로 나타내어지는 측쇄형 강유전성 고분자액정.A side chain type ferroelectric polymer liquid crystal represented by the following structural formula (I). 상기 식에서 R1은 알킬옥시기이고 R2는 지방족 또는 방향족 바이사이클릭링, 그리고 R3는 알콕시기이며 p는 10~150인 정수이다.Wherein R 1 is an alkyloxy group, R 2 is an aliphatic or aromatic bicyclic ring, and R 3 is an alkoxy group and p is an integer of 10 to 150. 제1항에 있어서, 상기 R1은 지방족으로 (CH2)n또는 (CH2CH2O)n이며 n은 1 내지 10의 정수인 측쇄형 강유전성 고분자액정.The side chain type ferroelectric polymer liquid crystal according to claim 1, wherein R 1 is an aliphatic (CH 2 ) n or (CH 2 CH 2 O) n and n is an integer of 1 to 10. 제1항에 있어서, 상기 R2는 하기의 구조식(Ⅱ) 내지 (Ⅴ)의 작용기로 이루어진 군에서 선택한 측쇄형 강유전성 고분자액정.The side chain type ferroelectric polymer liquid crystal according to claim 1, wherein R 2 is selected from the group consisting of functional groups represented by the following structural formulas (II) to (V). 제1항에 있어서, 상기 R3는 광학순수도를 가지며 비대칭중심을 갖는 알코올의 유도체인 측쇄형 강유전성 고분자액정.The side chain type ferroelectric polymer liquid crystal according to claim 1, wherein R 3 is a derivative of an alcohol having optical purity and having an asymmetric center. 제1항에 있어서, 상기 측쇄형 강유전성 고분자액정은 유기용매에 가용성인 측쇄형 강유전성 고분자액정.The side chain type ferroelectric polymer liquid crystal according to claim 1, wherein the side chain type ferroelectric liquid crystal is soluble in an organic solvent. 제1항의 측쇄형 강유전성 고분자액정을 액정배향막으로 사용한 액정표시소자.A liquid crystal display device using the side chain type ferroelectric liquid crystal of claim 1 as a liquid crystal alignment film. 제6항에 있어서, 상기 액정배향막은 상기 측쇄형 강유전성 고분자액정을 THF 또는 사이클로헥사논 용매에 3중량%로 녹인 후 500~2000A 박막으로 스핀 코팅한 액정표시소자.7. The liquid crystal display device according to claim 6, wherein the liquid crystal alignment layer is formed by dissolving the side chain type ferroelectric liquid crystal in THF or cyclohexanone solvent in a concentration of 3% by weight, and then spin-coating the thin film with a 500 to 2000 A thin film. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960008519A 1996-03-27 1996-03-27 Side chain ferroelectric polymer liquid crystal for alignment layer of liquid crystal display KR100373836B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010065169A (en) * 1999-12-29 2001-07-11 구본준, 론 위라하디락사 Liquid crystal display device

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* Cited by examiner, † Cited by third party
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JPS63273608A (en) * 1987-05-01 1988-11-10 Idemitsu Kosan Co Ltd Liquid crystal polymer
DE3823154A1 (en) * 1988-07-08 1990-01-11 Hoechst Ag NEW FERROELECTRIC LIQUID CRYSTALLINE POLYMERS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010065169A (en) * 1999-12-29 2001-07-11 구본준, 론 위라하디락사 Liquid crystal display device

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