KR20150062863A - 복합광학시트 및 이를 포함하는 백라이트 유닛 - Google Patents
복합광학시트 및 이를 포함하는 백라이트 유닛 Download PDFInfo
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- KR20150062863A KR20150062863A KR1020130147952A KR20130147952A KR20150062863A KR 20150062863 A KR20150062863 A KR 20150062863A KR 1020130147952 A KR1020130147952 A KR 1020130147952A KR 20130147952 A KR20130147952 A KR 20130147952A KR 20150062863 A KR20150062863 A KR 20150062863A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
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- G02B5/0231—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having microprismatic or micropyramidal shape
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- 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
- G02B5/3041—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 comprising multiple thin layers, e.g. multilayer stacks
- G02B5/305—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 comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers
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- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
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- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0056—Means for improving the coupling-out of light from the light guide for producing polarisation effects, e.g. by a surface with polarizing properties or by an additional polarizing elements
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
Description
도 2는 본 발명의 다른 구체예에 따른 복합광학시트의 사시도를 도시한 것이다.
도 3은 반사형 편광필름이 구비되는 위치를 설명하기 위한 복합광학시트의 분해사시도를 도시한 것이다.
도 4는 본 발명의 제2 구체예에 따른 복합광학시트의 단면도를 도시한 것이다.
도 5는 본 발명의 제3 구체예에 따른 복합광학시트의 단면도를 도시한 것이다.
도 6은 본 발명의 제4 구체예에 따른 복합광학시트의 단면도를 도시한 것이다.
도 7은 본 발명의 제5 구체예에 따른 복합광학시트의 단면도를 도시한 것이다.
도 8은 본 발명의 일 구체예에 따른 백라이트 유닛의 사시도를 도시한 것이다.
실시예1 | 실시예2 | 실시예3 | 실시예4 | 실시예5 | 실시예6 | 실시예7 | |
제1 광학패턴(1-2) | MLA | MLA | MLA | MLA | MLA | MLA | MLA |
제1 베이스필름(1-1) | PC | PC | PET | PET | PET | PET | PET |
반사형편광필름 위치 | 1-1하부 | 1-1하부 | 1-1하부 | 1-1하부 | 2-1상부 | 1-1상부 | 2-1하부 |
제2 광학패턴(2-2) | prism | prism | prism | prism | prism | prism | prism |
제2 베이스필름(2-1) | PC | PET | PC | PET | PC | PET | PET |
휘도(%) | 121 | 123 | 65 | 67 | 65 | 66 | 64 |
Waving(1~10) | 1 | 1 | 2 | 2 | 2 | 2 | 2 |
Wrinkle(1~10) | 1 | 1 | 2 | 2 | 2 | 2 | 2 |
비교예1 | 비교예2 | 비교예3 | 비교예4 | 비교예5 | |
제1 광학패턴(1-2) | MLA | MLA | MLA | MLA | MLA |
제1 베이스필름(1-1) | PC | PC | PC | PET | PET |
반사형편광필름 위치 | 없음 | 1-1하부 | 1-1하부 | 1-1하부 | 1-1하부 |
제2 광학패턴(2-2) | prism | prism | prism | prism | prism |
제2 베이스필름(2-1) | PC | PC | PET | PC | PET |
휘도(%) | 100 | 128 | 132 | 74 | 76 |
Waving(1~10) | 4 | 3 | 3 | 5 | 5 |
Wrinkle(1~10) | 4 | 3 | 5 | 3 | 5 |
Claims (16)
- 제1 광학패턴을 포함하는 제1 광학시트;
제2 광학패턴을 포함하는 제2 광학시트;
상기 제1 광학시트와 상기 제2 광학시트 사이에 형성된 제1 접착층; 및
반사형 편광필름을 포함하고,
상기 제2 광학패턴은 상기 제1 접착층에 접착되어 있고,
상기 반사형 편광필름은 굴절률이 상이한 복수 개의 폴리머층이 교대로 적층되어 있으며, 상기 제1 광학시트, 상기 제2 광학시트 또는 상기 제1 접착층과 일체화되어 있는 복합광학시트. - 제1항에 있어서,
상기 반사형 편광필름은 상기 제1 접착층과 상기 제1 베이스필름 사이에 형성되며, 상기 제1 베이스필름과 상기 반사형 편광필름은 제2 접착층에 의하여 일체화되어 있는 복합광학시트. - 제2항에 있어서,
상기 제1 베이스필름은 무연신 또는 일축연신된 폴리카보네이트계 필름 또는 폴리에틸렌테레프탈레이트계 필름인 복합광학시트. - 제1항에 있어서,
상기 반사형 편광필름은 상기 제1 베이스필름과 상기 제1 광학패턴 사이에 형성되며, 상기 제1 베이스필름과 상기 반사형 편광필름은 제2 접착층에 의하여 일체화되어 있는 복합광학시트. - 제1항에 있어서,
상기 반사형 편광필름은 상기 제2 베이스필름과 상기 제2 광학패턴 사이에 형성되며, 상기 제2 베이스필름과 상기 반사형 편광필름은 제2 접착층에 의하여 일체화되어 있는 복합광학시트. - 제1항에 있어서,
상기 반사형 편광필름은 상기 제2 베이스필름 하부에 형성되며,
상기 제2 베이스필름과 상기 반사형 편광필름은 제2 접착층에 의하여 일체화되어 있는 복합광학시트. - 제6항에 있어서,
상기 제2 베이스필름은 무연신 또는 일축연신된 폴리카보네이트계 필름 또는 폴리에틸렌테레프탈레이트계 필름인 복합광학시트. - 제1항에 있어서,
상기 반사형 편광필름은 상기 제1 광학패턴 상부에 형성되며,
상기 제1 광학패턴과 상기 반사형 편광필름은 제2 접착층에 의하여 일체화되어 있는 복합광학시트. - 제1항에 있어서,
상기 반사형 편광필름은 제1 폴리머층과 제2 폴리머층이 교대로 적층되고,
상기 제1 폴리머층은 두께가 15 내지 25㎛이고 굴절률이 1.45 내지 1.49이며,
상기 제2 폴리머층은 두께가 15 내지 25㎛이고 굴절률이 1.51 내지 1.58인 복합광학시트. - 제1항에 있어서,
상기 제1 광학패턴 제2 광학패턴은 마이크로 렌즈 패턴, 헥사고날 마이크로 렌즈 패턴, 엠보 패턴, 렌티큘러 렌즈 패턴, 프리즘 패턴, 피라미드 패턴 및 이들의 혼합 패턴으로 이루어진 군에서 선택된 패턴인 복합광학시트. - 제10항에 있어서,
상기 프리즘 패턴은 복수 개의 프리즘을 포함하고,
상기 프리즘의 정부는 상기 제1 접착층에 접하거나 상기 제1 접착층을 침투하여 있는 복합광학시트. - 제11항에 있어서,
상기 프리즘은 높이가 10 내지 50㎛이고, 피치가 20 내지 100㎛인 것을 특징으로 하는 복합광학시트. - 제1항에 있어서,
상기 제1 광학패턴 및 상기 제2 광학패턴은 프리즘 패턴인 복합광학시트. - 제1항에 있어서,
상기 제1 광학패턴은 렌티큘러 렌즈 패턴이고,
상기 제2 광학패턴은 프리즘 패턴인 복합광학시트. - 제1항에 있어서,
상기 제1 광학시트의 두께는 50 내지 300㎛이고,
상기 제2 광학시트의 두께는 50 내지 300㎛이고,
상기 제1 접착층의 두께는 1 내지 30㎛이며,
상기 반사형 편광필름의 두께는 120 내지 150㎛인 것을 특징으로 하는 복합광학시트. - 제1항 내지 제15항 중 어느 한 항의 복합광학시트를 포함하는 백라이트 유닛.
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US14/518,738 US20150153494A1 (en) | 2013-11-29 | 2014-10-20 | Composite optical sheet and backlight unit including the same |
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KR101720435B1 (ko) * | 2015-11-30 | 2017-03-28 | 엘지디스플레이 주식회사 | 액정 표시장치 |
KR20170034652A (ko) * | 2015-09-21 | 2017-03-29 | 엘지디스플레이 주식회사 | 백라이트 유닛 및 이를 구비하는 표시장치 |
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KR101764104B1 (ko) | 2015-10-21 | 2017-08-16 | 주식회사 상보 | 가변피치를 갖는 복합 광학 시트 |
US10613258B2 (en) * | 2016-09-13 | 2020-04-07 | Ubright Optronics Corporation | Optical assembly and the method to make the same |
CN107728382A (zh) * | 2017-11-29 | 2018-02-23 | 武汉天马微电子有限公司 | 背光模组及其制作方法和显示装置 |
CN108131610B (zh) * | 2018-01-31 | 2024-03-12 | 深圳市南极光电子科技有限公司 | 一种新型复合增光装置 |
CN114280705B (zh) * | 2021-12-31 | 2023-08-15 | 凯鑫森(上海)功能性薄膜产业股份有限公司 | 抗干涉耐污贴合膜的制备方法、贴合膜及屏幕 |
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JP4320672B2 (ja) * | 2006-12-06 | 2009-08-26 | ソニー株式会社 | 光学シートおよび表示装置 |
JP2009128904A (ja) * | 2007-11-26 | 2009-06-11 | Lg Electronics Inc | 光学フィルム及び液晶表示装置 |
CN102066994B (zh) * | 2008-03-31 | 2017-03-22 | 3M创新有限公司 | 光学膜 |
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KR20170034652A (ko) * | 2015-09-21 | 2017-03-29 | 엘지디스플레이 주식회사 | 백라이트 유닛 및 이를 구비하는 표시장치 |
KR101720435B1 (ko) * | 2015-11-30 | 2017-03-28 | 엘지디스플레이 주식회사 | 액정 표시장치 |
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