KR101619849B1 - 액정 디스플레이 소자의 응답 속도를 향상시키는 고분자 액정 배향막의 제조 방법 및 이러한 방법으로 제조된 액정 배향막 - Google Patents
액정 디스플레이 소자의 응답 속도를 향상시키는 고분자 액정 배향막의 제조 방법 및 이러한 방법으로 제조된 액정 배향막 Download PDFInfo
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- 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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- G02F1/1333—Constructional arrangements; Manufacturing methods
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Abstract
Description
도 2와 도 3은 각각 본 발명에서 사용된 카본 나노튜브의 TEM과 SEM 이미지이다.
도 4는 카본 나노튜브의 Raman Spectroscopy 측정결과를 도시한 그림이다.
도 5는 본 발명에서 사용될 액정 디스플레이 셀의 구조를 도식적으로 나타낸 것이다.
도 6은 본 발명의 액정 배향막 고분자와 기존의 액정 배향막 고분자의 편광 현미경 측정 결과이다.
도 7a와 도 7b는 본 발명의 액정 디스플레이 셀의 응답속도를 각각 측정한 결과이다.
도 8과 도 9는 본 발명의 액정 배향막 고분자의 물성(탄성 상수 및 order parameter S)의 측정 결과이다.
도 10은 카본 나노튜브가 포함된 본 발명의 액정 배향막과 기존의 상용화된 액정 배향막 고분자의 AFM 측정 이미지이다.
도 11은 카본 나노튜브의 종류에 따른 응답속도의 변화를 측정한 결과이다.
액정 배향막에 혼합된 카본 나노튜브의 함량 [wt%] | 액정 디스플레이 셀의 투과율 [%] |
0 | 35.7 |
0.3 | 35.4 |
0.6 | 35.0 |
0.8 | 34.8 |
1.5 | 33.1 |
2.4 | 25.2 |
Claims (10)
- 액정 디스플레이 소자에 사용되는 고분자 액정 배향막의 제조 방법에 있어서,
액정 배향막 고분자와 용매를 혼합하는 제1혼합 단계;
직경이 5~10 nm이고 길이가 500~2000 nm인 카본 나노튜브 입자를 용매에 혼합하는 제2혼합 단계;
상기 제 1 혼합 단계와 제 2 혼합 단계에서 혼합된 액정 배향막 고분자 혼합물과 카본 나노튜브 입자 혼합물을 섞은 후, 교반 하는 혼합 단계;
상기 혼합 단계를 거친 액정 배향막 고분자와 카본 나노튜브 입자 혼합물을 도전성 유리 기판에 도포하는 코팅 단계; 및
상기 코팅된 도전성 유리 기판을 150 ~ 250 ℃의 온도 범위에서 0.5 ~ 1.5 시간 동안 열처리하는 베이킹 단계;를 포함하며,
상기 혼합 단계에서 교반되는 혼합물에는, 전체 혼합물의 중량을 기준으로 1 내지 2 wt%의 범위로 카본 나노튜브 입자가 포함되는 것을 특징으로 하는, 액정 디스플레이 소자에 사용되는 고분자 액정 배향막의 제조 방법. - 삭제
- 제1항에 있어서,
상기 액정 배향막 고분자는, 폴리이미드, 폴리비닐알코올 및 폴리스타이렌 중에서 어느 하나 이상이고, 상기 폴리이미드는 도전성 유리 기판에 도포된 후 폴리이미드로 중합되는 폴리아믹산(Polyamic Acid)형 폴리이미드 또는 용매에 직접 용해 될 수 있는 가용성 폴리이미드(Soluble Polyimid)인 것을 특징으로 하는, 액정 디스플레이 소자에 사용되는 고분자 액정 배향막의 제조 방법. - 제1항에 있어서,
상기 제1혼합 단계와 제2혼합 단계에서 사용되는 용매는, 클로로벤젠, N-메틸피롤리돈(NMP), N-에틸피롤리돈(NEP), N,N-디메틸이미다졸리디논(DMI), N,N-디프로필이미다졸리디논(DPI), 디메틸포름아미드(DMF), 디메틸아세트아미드(DMAc), 디메틸술폭시드(DMSO), 시클로펜타논, 시클로헥사논, 디클로로에탄, 부틸셀루솔브, 감마부티로락톤 및 테트라히드로퓨란(THF)으로 이루어진 군에서 선택되는 적어도 어느 하나 이상인 것을 특징으로 하는, 액정 디스플레이 소자에 사용되는 고분자 액정 배향막의 제조 방법. - 제1항에 있어서,
상기 코팅 단계에서 사용되는 도포 방법은, 테이프법, 스핀 코팅법, 옵셋 인쇄법 및 잉크젯 프린팅법 중에서 선택되는 것을 특징으로 하는, 액정 디스플레이 소자에 사용되는 고분자 액정 배향막의 제조 방법. - 제1항에 있어서,
상기 제2혼합 단계에서 사용되는 카본 나노튜브는, 단일벽 탄소나노튜브(Single-wall Nanotube, SWNT) 또는 다중벽 나노튜브(Multi-wall Nanotube,MWNT)인 것을 특징으로 하는, 액정 디스플레이 소자에 사용되는 고분자 액정 배향막의 제조 방법. - 제1항에 있어서,
상기 도전성 유리 기판은 ITO(Indium Tin Oxide)가 증착된 유기 기판인 것을 특징으로 하는, 액정 디스플레이 소자에 사용되는 고분자 액정 배향막의 제조 방법. - 제1항 및 제3항 내지 제7항 중 어느 한 항에 기재된 고분자 액정 배향막의 제조 방법으로 제조된 고분자 액정 배향막
- 제8항에 기재된 고분자 액정 배향막을 포함하는 액정 디스플레이 소자
- 제8항에 기재된 고분자 액정 배향막을 사용함으로써, 고분자 액정의 완화시간(relaxation time)이 10 V 이하의 전압 조건에서 3 ~ 3.7 ms인 것을 특징으로 하는 액정 디스플레이 소자
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KR102770096B1 (ko) * | 2016-12-16 | 2025-02-18 | 엘지디스플레이 주식회사 | 기판, 이를 포함하는 액정표시장치 및 그 제조방법 |
KR102008613B1 (ko) * | 2018-02-27 | 2019-08-07 | 한국산업기술대학교산학협력단 | 탄소나노튜브 시트 배향막 및 이를 포함하는 액정 디스플레이 소자 |
CN111333346B (zh) * | 2020-03-10 | 2021-11-02 | Tcl华星光电技术有限公司 | 具有水平配向功能的透明导电膜、液晶显示器和制备方法 |
CN114879424B (zh) * | 2022-04-25 | 2023-07-04 | 长春理工大学 | 基于多层复合结构的电控液晶非线性光学器件及其制备方法和应用 |
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