KR102214157B1 - 광학 필름 - Google Patents
광학 필름 Download PDFInfo
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- KR102214157B1 KR102214157B1 KR1020180122651A KR20180122651A KR102214157B1 KR 102214157 B1 KR102214157 B1 KR 102214157B1 KR 1020180122651 A KR1020180122651 A KR 1020180122651A KR 20180122651 A KR20180122651 A KR 20180122651A KR 102214157 B1 KR102214157 B1 KR 102214157B1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- 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
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0051—Diffusing sheet or layer
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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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/14—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a face layer formed of separate pieces of material which are juxtaposed side-by-side
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/0073—Optical laminates
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—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
- G02B5/0221—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 an irregular structure
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
- G02B5/045—Prism arrays
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- 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
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133504—Diffusing, scattering, diffracting elements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
-
- 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
- B32B2457/00—Electrical equipment
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
- B32B2457/202—LCD, i.e. liquid crystal displays
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
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- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Mechanical Engineering (AREA)
- Optical Elements Other Than Lenses (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
Abstract
Description
도 2는 본 발명의 일 실시 예에 따른 광학 필름을 도시한다.
도 3은 본 발명의 다른 실시 예에 따른 광학 필름을 도시한다.
도 4는 본 발명의 일 실시 예에 따른 광학 필름의 단면도이다.
도 5는 본 발명의 일 실시 예에 따른 확산 시트의 단면도이다.
도 6은 본 발명의 다른 실시 예에 따른 확산 시트의 단면도이다.
도 7은 본 발명의 또 다른 실시 예에 따른 확산 시트의 단면도이다.
도 8은 본 발명의 일 실시 예에 따른 휘도 측정을 위한 실험의 구성을 도시한다.
도 9 및 10은 본 발명의 일 실시 예에 따른 실험 데이터를 도시한다.
액정패널: 20 광학 필름: 200, 300, 400, 500, 821
프리즘 시트: 15, 16, 210, 310, 320, 410, 420, 510, 520, 821-1, 821-2
확산 시트: 14, 220, 330, 430, 500-1, 600, 821-3
Claims (13)
- 광학 필름에 있어서,
복수의 프리즘이 일 면에 배치된 제1 프리즘 시트;
상기 제1 프리즘 시트의 상기 일 면에 배치되는 제2 프리즘 시트; 및
상기 제1 프리즘 시트의 타 면에 배치되며, 일 면에 제1 돌기부 및 제2 돌기부가 배치되는 확산 시트;를 포함하고,
상기 제1 프리즘 시트 및 상기 제2 프리즘 시트는 돌기 패턴을 포함하지 않는 접착제만에 의해 서로 접착되어 일체로 구성되고,
상기 제1 돌기부는 상기 제1 프리즘 시트의 상기 타 면에 접착되고, 상기 제2 돌기부는 상기 제1 프리즘 시트의 상기 타 면과 소정의 거리에 배치되고,
상기 제2 돌기부의 높이는, 상기 제1 돌기부의 높이에 비해 작으며, 상기 제1 돌기부의 높이 및 상기 제2 돌기부의 높이 간의 비율에 기초하여 정의되고,
상기 제2 돌기부의 높이는 수학식 h1 : h2 = 1 : x에 기초하여 정의되고,
여기서, h1은 상기 제1 돌기부의 높이, h2는 상기 제2 돌기부의 높이, 0.3≤x≤0.6 이고,
상기 제1 돌기부의 제1 면의 직경 및 상기 제1 돌기부의 높이는 수학식 d1 : h1 = 1 : y 에 기초하여 정의되고,
여기서, d1 은 상기 제1 돌기부에서 상기 확산 시트의 베이스필름에 접하는 상기 제1 면의 직경, h1 은 상기 제1 돌기부의 높이, y≤0.5 이고,
상기 제2 돌기부의 제2 면의 직경 및 상기 제2 돌기부의 높이는 수학식 d2 : h2 = 1 : z 에 기초하여 정의되고,
여기서, d2 는 상기 제2 돌기부에서 상기 확산 시트의 상기 베이스필름에 접하는 상기 제2 면의 직경, h2 는 상기 제2 돌기부의 높이, z≥0.15 인, 광학 필름.
- 제1항에 있어서,
상기 제1 돌기부의 상기 제1 면은 원형 또는 타원형이고,
상기 제2 돌기부의 상기 제2 면은 원형 또는 타원형인, 광학 필름.
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 제1항에 있어서,
상기 확산 시트의 상기 일 면은 제3 돌기부;가 더 배치되고,
상기 제3 돌기부의 높이는,
상기 제1 돌기부의 높이에 대한 비율에 기초하여 정의되는, 광학 필름.
- 제1항에 있어서,
상기 제1 돌기부에 포함되는 복수의 돌기의 높이는 동일하고,
상기 제2 돌기부에 포함되는 복수의 돌기의 높이는 동일한, 광학 필름.
- 제1항에 있어서,
상기 제1 돌기부에 포함되는 복수의 돌기 및 상기 제2 돌기부에 포함되는 복수의 돌기는 랜덤하게 배치되는, 광학 필름.
- 제1항에 있어서,
상기 확산 시트의 타면에 광의 확산을 위한 복수의 돌기를 더 포함하는, 광학 필름.
- 제1항에 있어서,
상기 제1 돌기부는,
상기 제2 돌기부에 포함되는 복수의 돌기 사이에 일부가 중첩되어 형성되는,광학 필름.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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KR1020180122651A KR102214157B1 (ko) | 2018-10-15 | 2018-10-15 | 광학 필름 |
CN201910973368.9A CN111045249B (zh) | 2018-10-15 | 2019-10-14 | 光学薄膜 |
US16/600,945 US11048038B2 (en) | 2018-10-15 | 2019-10-14 | Optical film for improving light diffusion and preventing brightness deterioration |
JP2019188947A JP7587248B2 (ja) | 2018-10-15 | 2019-10-15 | 光学フィルム |
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KR1020180122651A KR102214157B1 (ko) | 2018-10-15 | 2018-10-15 | 광학 필름 |
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KR20200042270A KR20200042270A (ko) | 2020-04-23 |
KR102214157B1 true KR102214157B1 (ko) | 2021-02-10 |
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US (1) | US11048038B2 (ko) |
JP (1) | JP7587248B2 (ko) |
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CN (1) | CN111045249B (ko) |
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KR102221196B1 (ko) * | 2018-11-16 | 2021-03-03 | 주식회사 엘엠에스 | 차폐 성능이 향상된 확산 시트 및 이를 포함하는 백라이트 유닛 |
JP7160863B2 (ja) * | 2020-06-26 | 2022-10-25 | 日亜化学工業株式会社 | 表示装置及び光拡散シート積層体 |
KR102222663B1 (ko) * | 2020-07-15 | 2021-03-04 | 주식회사 티에스디글로벌 | 지주 설치용 태양광패널 각도 조절장치 |
KR102461674B1 (ko) * | 2020-08-21 | 2022-11-02 | 주식회사 엘엠에스 | 광학필름 |
US20230043944A1 (en) * | 2021-08-09 | 2023-02-09 | Ubright Optronics Corporation | Composite quantum dot optical film |
KR102599217B1 (ko) * | 2021-09-23 | 2023-11-08 | 주식회사 엘엠에스 | 광학 필름 및 이를 포함하는 백라이트 유닛 |
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KR20090096295A (ko) * | 2008-03-06 | 2009-09-10 | 미래나노텍(주) | 광학 시트 및 그를 사용한 액정표시장치의 백라이트 유닛 |
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JP2016212440A (ja) * | 2014-12-05 | 2016-12-15 | サンテックオプト株式会社 | 拡散シートおよび積層光学シート |
KR101710097B1 (ko) * | 2015-04-03 | 2017-02-27 | 주식회사 엘엠에스 | 광학시트 및 이를 구비한 백라이트 유닛 |
KR101691541B1 (ko) | 2015-06-04 | 2016-12-30 | 주식회사 엘엠에스 | 확산패턴을 가지는 반사편광모듈 및 이를 구비한 백라이트 유닛 |
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JP2020076978A (ja) | 2020-05-21 |
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