KR20140077861A - 액정 소자의 제조 방법 - Google Patents
액정 소자의 제조 방법 Download PDFInfo
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Abstract
Description
도 3 및 5는, 예시적인 소자 제조 과정을 설명하기 위한 도면이다.
도 6는, 예시적인 액정 소자의 제조 장치를 보여주는 도면이다.
도 7 내지 17은, 실시예 및 비교예에서의 액정 소자 등에 대한 평가 결과를 보여준다.
102: 액정층
1021: 폴리머 네트워크
1022: 액정 영역
201A, 201B: 기재층
301: 중합성 조성물
302: 가압 롤러
Claims (16)
- 배향성 폴리머 네트워크를 형성하도록 조성된 전구 물질과 액정 화합물을 포함하는 중합성 조성물을 포함하는 층을 배향막상에 중합시켜서 상기 배향성 폴리머 네트워크 내에 분산되어 있는 상기 액정 화합물을 포함하는 액정층을 형성하는 것을 포함하는 액정 소자의 제조 방법.
- 제 1 항에 있어서, 중합성 조성물을 포함하는 층은 스퀴즈 코팅 방식으로 형성하는 제조 방법.
- 제 2 항에 있어서, 중합성 조성물을 포함하는 층은, 2개의 기재층의 사이에 중합성 조성물을 위치시키고, 상기 기재층 중 적어도 하나에 압력을 인가하여 형성하는 제조 방법.
- 제 1 항에 있어서, 중합성 조성물로 무용제형 조성물을 사용하는 제조 방법.
- 제 1 항에 있어서, 배향막은 광배향성 화합물을 포함하는 액정 소자의 제조 방법.
- 제 1 항에 있어서, 중합성 조성물은 전구 물질 5 중량부 내지 50 중량부 및 액정 화합물 50 중량부 내지 95 중량부를 포함하는 액정 소자의 제조 방법.
- 제 1 항에 있어서, 전구 물질은 이관능성 아크릴레이트 화합물, 3관능 이상의 다관능성 아크릴레이트 화합물 및 단관능성 아크릴레이트 화합물 중 적어도 하나를 포함하는 액정 소자의 제조 방법.
- 제 1 항에 있어서, 전구 물질은 이관능성 아크릴레이트 화합물, 3관능 이상의 다관능성 아크릴레이트 화합물 및 단관능성 아크릴레이트 화합물 중 적어도 하나를 하기 수식 1 내지 3을 만족할 수 있도록 포함하는 액정 소자의 제조 방법:
[수식 1]
A ≥ 1.3 × B
[수식 2]
A ≥ C
[수식 3]
A ≥ 0.6 × (B+C)
수식 1 내지 3에서 A, B 및 C는 각각 전구 물질 내에 존재하는 상기 이관능성, 3관능 이상의 다관능성 및 단관능성 아크릴레이트 화합물의 중량의 총합을 100으로 환산하였을 때 구해지는 각 화합물간의 중량 비율이다. - 제 8 항에 있어서, 전구 물질은 이관능성 아크릴레이트 화합물, 3관능 이상의 다관능성 아크릴레이트 화합물 및 단관능성 아크릴레이트 화합물 중 적어도 하나를 하기 수식 4 내지 6을 추가로 만족할 수 있도록 포함하는 액정 소자의 제조 방법:
[수식 4]
A ≥ 40
[수식 5]
B ≤ 30
[수식 6]
C ≤ 50
수식 4 내지 6에서 A, B 및 C는 각각 전구 물질 내에 존재하는 상기 이관능성, 3관능 이상의 다관능성 및 단관능성 아크릴레이트 화합물의 중량의 총합을 100으로 환산하였을 때 구해지는 각 화합물간의 중량 비율이다. - 제 1 항에 있어서, 하기 수식 D를 만족하도록 액정층을 형성하는 액정 소자의 제조 방법:
[수식 D]
247 nm ≤ {d × (ne - no)} × A ≤ 302 nm
수식 D에서 d는 액정층의 두께(단위: nm)이고, ne는 액정 화합물의 이상 굴절률이며, no는 액정 화합물의 정상 굴절률이고, A는 폴리머 네트워크와 액정 화합물의 합계 중량(T)을 기준으로 한 액정 화합물의 중량(L)의 비율(L/T) 또는 액정층의 전체 부피(TV)에서 액정 화합물이 차지하는 부피(VL)의 비율(VL/TV)이다. - 제 1 항에 있어서, 폴리머 네트워크와 액정 화합물은 하기 수식 B를 만족하는 액정 소자의 제조 방법:
[수식 B]
(1 - a) × {(2no 2+ne 2)/3}0.5 ≤ np ≤ (1+a) × ne
수식 B에서 a는 0 내지 0.5의 범위 내의 어느 하나의 수이고, no는 액정 화합물의 정상 굴절률이며, ne는 액정 화합물의 이상 굴절률이고, np는 폴리머 네트워크의 굴절률이다. - 제 1 항에 있어서, 액정층의 일측 또는 양측에 편광층을 배치하는 것을 추가로 수행하는 액정 소자의 제조 방법.
- 배향성 폴리머 네트워크를 형성하도록 조성된 전구 물질과 액정 화합물을 포함하는 중합성 조성물을 포함하는 층을 유지시킬 수 있도록 설치된 거치 수단; 상기 중합성 화합물의 중합을 유도할 수 있는 에너지를 제공할 수 있도록 설치된 중합 유도 수단을 포함하는 액정 소자의 제조 장치.
- 제 13 항에 있어서, 거치 수단은 적어도 중합성 조성물의 중합 과정에서 상기 중합성 조성물을 포함하는 층의 표면을 곡면으로 유지할 수 있도록 설치되어 있는 액정 소자의 제조 장치.
- 제 13 항에 있어서, 거치 수단은 전구체 혼합물의 층을 이동시킬 수 있도록 설치된 가이드롤인 액정 소자의 제조 장치.
- 제 13 항에 있어서, 중합 유도 수단은 자외선 조사 수단인 액정 소자의 제조 장치.
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