KR101542644B1 - 터치패널용 점착제 조성물, 점착 필름 및 터치 패널 - Google Patents
터치패널용 점착제 조성물, 점착 필름 및 터치 패널 Download PDFInfo
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Abstract
Description
도 2는 본 발명의 다른 구현예에 따른 점착 필름의 개략적인 단면도이다.
도 3은 본 발명의 또 다른 구현예들에 따른 터치 패널의 개략적인 단면도이다.
도 4는 본 발명의 또 다른 구현예들에 따른 터치 패널의 개략적인 단면도이다.
도 5는 실시예 1-2 및 비교예 1에서 제조된 점착 필름에 대하여 온도에 따른 탄성률을 도시한 그래프이다.
도 6은 실시예 1-2 및 비교예 1에서 제조된 점착 필름에 대하여 크리이프 시험에 의한 결과를 도시한 그래프이다.
도 7은 실시예 1-2 및 비교예 1에서 제조된 점착 필름에 대하여 완화 탄성률 (relaxation modulus)를 측정하여 도시한 그래프이다.
구분 | 실시예[중량부] | 비교예[중량부] | ||||
1 | 2 | 3 | 1 | 2 | 3 | |
우레탄 올리고머 | 40 | 40 | 40 | 40 | 40 | 40 |
2-EHA | 30 | 35 | 40 | 30 | 35 | 40 |
HEA | 30 | 25 | 20 | - | - | - |
IBOA | - | - | - | 30 | 25 | 20 |
유리 전이 온도 [℃] | -25 | -30 | -35 | -10 | -15 | -20 |
구분 | 실시예[중량부] | 비교예[중량부] | ||||
1 | 2 | 3 | 1 | 2 | 3 | |
80℃에서의 탄성률 [Pa] | 70,000 | 65,000 | 55,000 | 10,500 | 100,000 | 95000 |
휨 정도 [mm] |
0.3 | 0.25 | 0.2 | 0.6 | 0.5 | 0.4 |
12, 22, 112, 222: 점착제층 23: 이형필름층
100, 200: 터치 패널 130, 230: 전도성 플라스틱 필름
131, 231: 플라스틱 기재층 132, 232: 도전층
240: 반사방지 코팅 250: 보호 필름
260: 투명 기판 270: 액정표시 장치(LCD)
Claims (18)
- 우레탄계 터치패널용 점착제 조성물의 유리전이온도가 -20℃ 내지 -50℃이고,
상기 우레탄계 터치패널용 점착제 조성물을 경화도가 70 내지 90wt%가 되도록 경화한 경화물의 탄성율(modulus)은 60℃ 내지 80℃에서 50,000 내지 70,000 Pa이고,
상기 우레탄계 터치패널용 점착제 조성물은 우레탄계 경화성 화합물, (메타)아크릴산 에스테르계 단량체 및 가교성 단량체를 포함하고,
상기 우레탄계 경화성 화합물은 중량 평균분자량 30,000 내지 100,000의 올리고머이고,
상기 (메타)아크릴산 에스테르 단량체가 알킬(메타)아크릴레이트이고, 상기 알킬(메타)아크릴레이트의 알킬은 선형 또는 분지형 C1-C14 알킬이고,
상기 가교성 단량체는 2-히드록시에틸 (메타)아크릴레이트, 2-히드록시프로필 (메타)아크릴레이트, 4-히드록시부틸 (메타)아크릴레이트, 6-히드록시헥실 (메타)아크릴레이트, 8-히드록시옥틸 (메타)아크릴레이트, 2-히드록시에틸렌글리콜 (메타)아크릴레이트, 2-히드록시프로필렌글리콜 (메타)아크릴레이트, 아크릴산, 메타크릴산, 2-(메타)아크릴로일옥시 아세트산, 3-(메타)아크릴로일옥시 프로필산, 4-(메타)아크릴로일옥시 부틸산, 아크릴산 이중체, 이타콘산, 말레산, 2-이소시아네이토에틸 (메타)아크릴레이트, 3-이소시아네이토프로필 (메타)아크릴레이트, 4-이소시아네이토부틸 (메타)아크릴레이트, (메타)아크릴아미드, N-비닐 피롤리돈, N-비닐 카프로락탐 및 이들의 조합으로 이루어진 군으로부터 선택된 하나를 포함하고,
상기 우레탄계 터치패널용 점착제 조성물은 상기 우레탄계 경화성 화합물 100 중량부 대비 상기 (메타)아크릴산 에스테르계 단량체 75 내지 100 중량부를 포함하고,
상기 우레탄계 터치패널용 점착제 조성물은 상기 우레탄계 경화성 화합물 100 중량부 대비 상기 가교성 단량체 0.01 내지 10 중량부를 포함하는
우레탄계 터치패널용 점착제 조성물. - 삭제
- 삭제
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- 삭제
- 제1항에 있어서,
상기 (메타)아크릴산 에스테르 단량체는 메틸 (메타)아크릴레이트, 에틸 (메타)아크릴레이트, n-프로필 (메타)아크릴레이트, 이소프로필 (메타)아크릴레이트, n-부틸 (메타)아크릴레이트, t-부틸 (메타)아크릴레이트, sec-부틸 (메타)아크릴레이트, 펜틸 (메타)아크릴레이트, 2-에틸헥실 (메타)아크릴레이트, 2-에틸부틸 (메타)아크릴레이트, n-옥틸(메타)아크릴레이트, 이소옥틸 (메타)아크릴레이트, 이소보닐 (메타)아크릴레이트, 이소노닐 (메타)아크릴레이트 및 이들의 조합으로 이루어진 군으로부터 선택된 하나를 포함하는
우레탄계 터치패널용 점착제 조성물. - 제1항에 있어서,
상기 가교성 단량체가 히드록시기 함유 단량체, 카복실기 함유 단량체 또는 질소 함유 단량체 및 이들의 조합으로 이루어진 군으로부터 선택된 하나를 포함하는
우레탄계 터치패널용 점착제 조성물. - 삭제
- 제1항에 있어서,
광개시제를 더 포함하는
우레탄계 터치패널용 점착제 조성물. - 제9항에 있어서,
상기 광개시제는 벤조인계 개시제, 히드록시 케톤계 개시제, 아미노 케톤계 개시제, 카프로락탐계 개시제 및 이들의 조합으로 이루어진 군으로부터 선택된 하나를 포함하는
우레탄계 터치패널용 점착제 조성물. - 제1항, 제6항, 제7항, 제9항 및 제10항 중 어느 한 항에 따른 우레탄계 터치패널용 점착제 조성물의 경화물을 포함하고, 상기 경화물의 경화도가 70 내지 90wt%인 점착제층을 포함하는 점착 필름.
- 제11항에 있어서,
상기 점착제층의 두께가 25㎛ 내지 300㎛인
점착 필름. - 제12항에 있어서,
상기 점착 필름에 대하여 물성 분석기(Texture Analyser, TA XT Plus, Stable micro systems社)를 이용하여 1000g중의 힘을 5분 동안 가한 후 측정된 변형의 정도가 0.08 내지 0.11mm인
점착 필름. - 제11항에 있어서,
상기 점착 필름은 기재층 및 상기 기재층의 일면 또는 양면에 적층된 점착제층을 포함하는
점착 필름. - 제14항에 있어서,
기재층이 폴리에틸렌테레프탈레이트, 폴리테트라플루오르에틸렌, 폴리에틸렌, 폴리프로필렌, 폴리부텐, 폴리부타디엔, 염화비닐 공중합체, 폴리우레탄, 에틸렌-비닐아세테이트, 에틸렌-프로필렌 공중합체, 에틸렌-아크릴산 에틸 공중합체, 에틸렌-아크릴산 메틸 공중합체, 폴리이미드 및 이들의 조합으로 이루어진 군으로부터 선택된 하나를 포함하는
점착 필름. - 제14항에 있어서,
상기 기재층의 일면 또는 양면에 점착제층 및 이형필름층이 순차적으로 적층된
점착 필름. - 일면에 도전층이 형성된 전도성 플라스틱 필름; 및
상기 도전층에 부착되고, 제11항에 따른 점착 필름으로 이루어진 점착제층;
을 포함하는 터치 패널. - 제17항에 있어서,
상기 전도성 플라스틱 필름이 ITO(도전성 금속 산화물)층이 일면에 형성된 폴리에틸렌테레프탈레이트 필름인
터치 패널.
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KR1020120089713A KR101542644B1 (ko) | 2012-08-16 | 2012-08-16 | 터치패널용 점착제 조성물, 점착 필름 및 터치 패널 |
PCT/KR2013/007131 WO2014027788A1 (ko) | 2012-08-16 | 2013-08-07 | 터치패널용 점착제 조성물, 점착 필름 및 터치 패널 |
US14/421,023 US10174224B2 (en) | 2012-08-16 | 2013-08-07 | Adhesive composition for touch panel, adhesive film, and touch panel |
CN201380042890.6A CN104540916B (zh) | 2012-08-16 | 2013-08-07 | 触控面板用粘结剂组合物、粘结膜及触控面板 |
EP13879358.3A EP2886624B1 (en) | 2012-08-16 | 2013-08-07 | Adhesive composition for touch panel, adhesive film, and touch panel |
JP2015527363A JP6246208B2 (ja) | 2012-08-16 | 2013-08-07 | タッチパネル用粘着剤組成物、粘着フィルム及びタッチパネル |
TW102129584A TWI619789B (zh) | 2012-08-16 | 2013-08-16 | 觸控面板用粘結劑組合物、粘結膜及觸控面板 |
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- 2012-08-16 KR KR1020120089713A patent/KR101542644B1/ko active Active
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2013
- 2013-08-07 US US14/421,023 patent/US10174224B2/en active Active
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- 2013-08-07 JP JP2015527363A patent/JP6246208B2/ja active Active
- 2013-08-07 EP EP13879358.3A patent/EP2886624B1/en active Active
- 2013-08-07 WO PCT/KR2013/007131 patent/WO2014027788A1/ko active Application Filing
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CN104540916A (zh) | 2015-04-22 |
WO2014027788A1 (ko) | 2014-02-20 |
EP2886624A1 (en) | 2015-06-24 |
JP6246208B2 (ja) | 2017-12-13 |
TW201408746A (zh) | 2014-03-01 |
JP2015531804A (ja) | 2015-11-05 |
US20150232707A1 (en) | 2015-08-20 |
CN104540916B (zh) | 2018-05-11 |
KR20140023624A (ko) | 2014-02-27 |
EP2886624A4 (en) | 2015-06-24 |
TWI619789B (zh) | 2018-04-01 |
US10174224B2 (en) | 2019-01-08 |
EP2886624B1 (en) | 2018-12-19 |
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