KR101992002B1 - 편광판용 점착 필름, 이를 포함하는 편광판 및 이를 포함하는 광학표시장치 - Google Patents
편광판용 점착 필름, 이를 포함하는 편광판 및 이를 포함하는 광학표시장치 Download PDFInfo
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- KR101992002B1 KR101992002B1 KR1020160158489A KR20160158489A KR101992002B1 KR 101992002 B1 KR101992002 B1 KR 101992002B1 KR 1020160158489 A KR1020160158489 A KR 1020160158489A KR 20160158489 A KR20160158489 A KR 20160158489A KR 101992002 B1 KR101992002 B1 KR 101992002B1
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- polarizing plate
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- curing agent
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Images
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Polarising Elements (AREA)
Abstract
Description
도 2는 본 발명 일 실시예의 편광판의 단면도이다.
실시예 | 비교예 | |||||
1 | 2 | 1 | 2 | 3 | 4 | |
(A)(중량부) | 100 | 100 | 100 | 100 | 100 | 100 |
(B1)(중량부) | 2.50 | 1.87 | 1.25 | - | 3.62 | 3.00 |
(B2)(중량부) | 0.67 | 1.07 | 1.43 | 2.16 | - | 0.37 |
(C)(중량부) | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 |
모듈러스 (MPa, @25℃) |
0.13 | 0.12 | 0.10 | 0.08 | 0.70 | 0.49 |
모듈러스 (MPa, @95℃) |
0.005 | 0.0045 | 0.003 | 0.0015 | 0.550 | 0.075 |
식 1의 모듈러스 차이(MPa) | 0.125 | 0.1155 | 0.097 | 0.0785 | 0.150 | 0.415 |
크립(㎛, @25℃) | 113 | 124 | 155 | 237 | 58 | 97 |
크립(㎛, @95℃) | 412 | 486 | 593 | 885 | 80 | 284 |
식 2의 크립 차이 (㎛) |
299 | 362 | 438 | 648 | 22 | 187 |
패널 휨 | ○ | ○ | ○ | ○ | x | x |
내열 신뢰성 | ○ | ○ | △ | x | ○ | ○ |
내습열 신뢰성 | ○ | ○ | △ | x | ○ | ○ |
Claims (13)
- (메트)아크릴계 공중합체, 제1이소시아네이트계 경화제, 및 제2이소시아네이트계 경화제를 포함하는 편광판용 점착제 조성물로 형성되는 편광판용 점착필름이고,
상기 편광판용 점착필름은 하기 식 1의 모듈러스 차이가 0.1MPa 내지 0.3MPa이고, 하기 식 2의 크립 차이가 200㎛ 내지 500㎛인 것인, 편광판용 점착필름:
<식 1>
모듈러스 차이 = 모듈러스 1 - 모듈러스 2
(상기 식 1에서, 상기 모듈러스 1은 상기 편광판용 점착필름의 25℃에서의 모듈러스(단위:MPa),
상기 모듈러스 2는 상기 편광판용 점착필름의 95℃에서 모듈러스(단위:MPa)),
<식 2>
크립 차이 = 크립 2 - 크립 1
(상기 식 2에서, 상기 크립 1은 상기 편광판용 점착필름의 25℃에서 크립(단위:㎛),
상기 크립 2는 상기 편광판용 점착필름의 95℃에서 크립(단위:㎛)).
- 제1항에 있어서, 상기 편광판용 점착필름은 95℃에서 모듈러스가 0.004MPa 이상 0.1MPa 이하인 것인, 편광판용 점착필름.
- 제1항에 있어서, 상기 편광판용 점착필름은 95℃에서 크립이 400㎛ 이상 800㎛ 이하인 것인, 편광판용 점착필름.
- 제1항에 있어서, 상기 편광판용 점착필름은 95℃에서의 모듈러스: 25℃에서의 모듈러스의 비가 1:10 내지 1:30인 것인, 편광판용 점착필름.
- 제1항에 있어서, 상기 제1이소시아네이트계 경화제와 상기 제2이소시아네이트계 경화제는 상기 편광판용 점착필름 중 semi-IPN(interpenetrating polymer network) 구조를 형성하는 것인, 편광판용 점착필름.
- 제1항에 있어서, 상기 제1이소시아네이트계 경화제는 방향족기가 있으며, 3관능 내지 6관능의 이소시아네이트계 경화제를 포함하는 것인, 편광판용 점착필름.
- 제1항에 있어서, 상기 제2이소시아네이트계 경화제는 하기 화학식 1의 모이어티를 포함하는 것인, 편광판용 점착필름:
<화학식 1>
*- (CH2)n - O - C(=O)-NH - (CH2)m - NCO
(상기 화학식 1에서, n은 10 내지 20의 정수, m은 1 내지 20의 정수, *은 연결 부위).
- 제1항에 있어서, 상기 제1이소시아네이트계 경화제: 상기 제2이소시아네이트계 경화제는 1.5:1 내지 10:1의 중량비로 상기 편광판용 점착제 조성물에 포함되는 것인, 편광판용 점착필름.
- 제1항에 있어서, 상기 (메트)아크릴계 공중합체는 수산기를 갖는 (메트)아크릴계 단량체, 카르복시산기를 갖는 (메트)아크릴계 단량체, 및 알킬기를 갖는 (메트)아크릴계 단량체를 포함하는 단량체 혼합물의 공중합체인 것인, 편광판용 점착필름.
- 제1항에 있어서, 상기 제1이소시아네이트계 경화제와 제2이소시아네이트계 경화제 전체는 상기 (메트)아크릴계 공중합체 100중량부에 대해 20중량부 이하로 포함되는 것인, 편광판용 점착 필름.
- 제1항에 있어서, 상기 편광판용 점착제 조성물은 실란커플링제를 더 포함하는 것인, 편광판용 점착 필름.
- 제1항 내지 제11항 중 어느 한 항의 편광판용 점착필름을 포함하는, 편광판.
- 제12항의 편광판을 포함하는, 광학표시장치.
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