KR102621169B1 - 편광판의 제조 방법 - Google Patents
편광판의 제조 방법 Download PDFInfo
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- KR102621169B1 KR102621169B1 KR1020190003684A KR20190003684A KR102621169B1 KR 102621169 B1 KR102621169 B1 KR 102621169B1 KR 1020190003684 A KR1020190003684 A KR 1020190003684A KR 20190003684 A KR20190003684 A KR 20190003684A KR 102621169 B1 KR102621169 B1 KR 102621169B1
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- QPBYLOWPSRZOFX-UHFFFAOYSA-J tin(iv) iodide Chemical compound I[Sn](I)(I)I QPBYLOWPSRZOFX-UHFFFAOYSA-J 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- NLLZTRMHNHVXJJ-UHFFFAOYSA-J titanium tetraiodide Chemical compound I[Ti](I)(I)I NLLZTRMHNHVXJJ-UHFFFAOYSA-J 0.000 description 1
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- 238000005809 transesterification reaction Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 1
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- 238000005406 washing Methods 0.000 description 1
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- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
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Abstract
Description
초기 | 2 시간 경과 후 | 6 시간 경화 후 | |||
평면도 | 평면도 | 변화량 | 평면도 | 변화량 | |
실시예1 | 2.2 | 2 | -0.2 | 1.8 | -0.4 |
실시예2 | 2.5 | 1.9 | -0.6 | 1.6 | -0.9 |
실시예3 | 1.7 | 1.6 | -0.1 | 1.4 | -0.3 |
Claims (20)
- 광학층이 표면에 형성되어 있는 고분자 필름을 열처리한 광학 필름과, 일방향으로 광 흡수축이 형성되어 있는 편광 필름의 일면을 부착하는 단계와;
상기 광학 필름이 부착되지 않는 상기 편광 필름의 타면상에 점착제층을 형성하는 단계;를 포함하여 이루어지되,
광학층은, 하드코팅층, 반사 방지층, 눈부심 방지층 또는 대전방지층을 포함하고,
아래 [수식 1]에 따른 편광판의 벤딩 특성을 반영하는 A값의 범위가 0.01 내지 26 N·mm의 범위 내에 만족하도록, 상기 광학 필름, 점착제층, 편광필름의 두께를 조절하여 편광판을 제조하는 것을 특징으로 하는 편광판의 제조 방법.
[수식 1] A = a Х (SPVA Х (T1+b) + SProХ (T2+b))
(단, SPVA는 편광 필름의 광 흡수축 방향의 수축력이고, SPro는 편광 필름의 광 흡수축 방향과 평행한 방향의 광학 필름의 수축력과 광흡수축 방향과 수직한 방향의 광학 필름의 수축력 중 큰 수축력이며, T1은 점착제층의 가장 하부에서 편광 필름의 중심까지의 거리이고(단위: mm)이고, T2은 점착제층의 가장 하부에서 광학 필름의 중심까지의 거리(단위: mm)이며, a는 0.5 내지 2의 범위 내의 수이고, b는 0.14 내지 0.6의 범위 내의 수이며 LCD 패널의 두께(단위: mm)의 1/2배임) - 삭제
- 제 1 항에 있어서, 열처리 전에 고분자 필름을 50℃ 내지 150℃의 범위 내의 온도의 스팀으로 10초 내지 1 시간 동안 처리하는 단계 및 상기 스팀 처리 후에 고분자 필름의 표면에 광학층을 형성하는 단계를 추가로 수행하는 편광판의 제조 방법.
- 제 1 항에 있어서, 열처리 전의 고분자 필름은 제 1 방향에서의 수축력이 5.5N 내지 15N의 범위 내인 편광판의 제조 방법.
- 제 4 항에 있어서, 열처리 전의 고분자 필름의 제 1 방향에서의 수축력(S1)과 상기 제 1 방향과 수직하는 제 2 방향에서의 수축력(S2)의 비율(S1/S2)이 10 이상인 편광판의 제조 방법.
- 제 5 항에 있어서, 열처리 전의 고분자 필름의 제 2 방향에서의 수축력(S2)이 0.01N 내지 2N의 범위 내인 편광판의 제조 방법.
- 제 4 항에 있어서, 열처리 전의 고분자 필름의 제 1 방향에서의 수축력(SB)과 열처리 후의 고분자 필름의 상기 제 1 방향에서의 수축력(SA)의 비율(SB/SA)이 1을 초과하는 편광판의 제조 방법.
- 제 1 항에 있어서, 열처리 후의 고분자 필름은 제 1 방향에서의 수축력이 5N 내지 10N의 범위 내인 편광판의 제조 방법.
- 제 8 항에 있어서, 열처리 후의 고분자 필름의 제 1 방향에서의 수축력(S1)과 상기 제 1 방향과 수직하는 제 2 방향에서의 수축력(S2)의 비율(S1/S2)이 13 이상인 편광판의 제조 방법.
- 제 1 항에 있어서, 열처리는 하기 [수식 2]를 만족하는 온도에서 수행하는 편광판의 제조 방법:
[수식 2] (Tg - 60)℃ = T ≤= (Tg + 50)℃
(단, 수식 2에서 Tg는 고분자 필름의 유리전이온도이고, T는 열처리 온도이며, 상기 유리전이온도 및 열처리 온도의 단위는 ℃임) - 제 1 항에 있어서, 열처리는 10초 내지 1,000초 동안 수행하는 편광판의 제조 방법.
- 삭제
- 제 1 항에 있어서, 편광 필름의 광흡수축 방향의 편광판의 수축력(SP)과 상기 광흡수축 방향과 수직한 방향의 편광판의 수축력(SV)의 비율(SP/SV)이 0.7 내지 1.5의 범위 내가 되도록 광학 필름을 편광 필름에 부착하는 편광판의 제조 방법.
- 제 1 항에 있어서, 편광 필름의 광흡수축과 평행한 방향에서의 편광판의 수축력이 6.5N 내지 15N의 범위 내가 되도록 광학 필름을 편광 필름에 부착하는 편광판의 제조 방법.
- 제 1 항에 있어서, 광흡수축과 수직한 방향에서의 편광판의 수축력이 6.0N 내지 15N의 범위 내가 되도록 광학 필름을 편광 필름에 부착하는 편광판의 제조 방법.
- 제 1 항에 있어서, 광학 필름의 고분자 필름의 제 1 방향에서의 수축력이 5N 내지 10N의 범위 내이고, 상기 제 1 방향과 편광 필름의 광흡수축이 서로 수직하도록 편광 필름과 광학 필름을 부착하는 편광판의 제조 방법.
- 제 16 항에 있어서, 고분자 필름의 제 1 방향에서의 수축력(S1)과 상기 제 1 방향과 수직하는 제 2 방향에서의 수축력(S2)의 비율(S1/S2)이 13 이상인 편광판의 제조 방법.
- 제 1 항에 있어서, 광흡수축과 평행한 방향에서의 편광 필름의 수축력이 0.1 내지 15N의 범위 내인 편광판의 제조 방법.
- 제 1 항에 있어서, 편광 필름의 한변과 상기 편광 필름의 광 흡수축이 이루는 각도 중 작은 각도가 0도 내지 10도의 범위 내 또는 80도 내지 100도의 범위 내에 있는 편광판의 제조 방법.
- 제 1 항에 있어서, 편광 필름의 한변과 상기 편광 필름의 광 흡수축이 이루는 각도 중 작은 각도가 35도 내지 55도의 범위 내 또는 125도 내지 145도의 범위 내에 있는 편광판의 제조 방법.
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