JP7587248B2 - 光学フィルム - Google Patents
光学フィルム Download PDFInfo
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- JP7587248B2 JP7587248B2 JP2019188947A JP2019188947A JP7587248B2 JP 7587248 B2 JP7587248 B2 JP 7587248B2 JP 2019188947 A JP2019188947 A JP 2019188947A JP 2019188947 A JP2019188947 A JP 2019188947A JP 7587248 B2 JP7587248 B2 JP 7587248B2
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- 239000012788 optical film Substances 0.000 title claims description 38
- 238000009792 diffusion process Methods 0.000 claims description 84
- 239000010408 film Substances 0.000 claims description 15
- 239000000853 adhesive Substances 0.000 claims description 11
- 230000001070 adhesive effect Effects 0.000 claims description 11
- 239000004973 liquid crystal related substance Substances 0.000 description 11
- 239000010410 layer Substances 0.000 description 8
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- 230000000694 effects Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
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- 229920005989 resin Polymers 0.000 description 3
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 2
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- 230000000052 comparative effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
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- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- -1 ester acrylate Chemical class 0.000 description 1
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 1
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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
-
- 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
-
- 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
-
- 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
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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
- G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
-
- 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
-
- 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
- G02B6/0051—Diffusing sheet or layer
-
- 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
-
- 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)
- Mathematical Physics (AREA)
- 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)
Description
h1:h2=1:x (1)
ここで、h1は、第1の突起部610の高さであり、h2は、第2の突起部620の高さであり、xは0.25≦x≦0.6の範囲の値を有する。ここで、xが0.25より小さい場合、第2の突起部620の拡散機能が顕著に低下する場合がある。xが0.6より大きい場合、第2の突起部620と接着剤層との間の距離が近くなることによって、LCD装置の画面にムラ(黒点及び百点)が生じることがある。また、エアーギャップが十分に形成されないため、拡散及び輝度が低下される問題も発生することがある。
d1:h1=1:y (2)
ここで、d1は、第1の突起部710の第1の面710-1の直径であり、h1は、第1の突起部710の高さであり、y≦0.5である。ここで、yが0.5より大きい場合、光の輝度と光の拡散効果が減少する。
d2:h2=1:z (3)
ここで、d2は、第2の突起部720の第2の面720-1の直径であり、h2は、第2の突起部720の高さであり、z≧0.15である。この場合、zが0.15より小さい場合、光の輝度と光の拡散効果が減少する。一例で、d1及びd2が同一の場合、zは、上記yより小さいことが好ましい。
Claims (7)
- 光学フィルムであって、
複数のプリズムが一方の面に配置された第1のプリズムシートと、
前記第1のプリズムシートの他方の面に配置される第2のプリズムシートと、
前記第2のプリズムシートの他方の面に配置され、一方の面に第1の突起部及び第2の突起部が配置された拡散シートと、を含み、
前記第1のプリズムシート及び前記第2のプリズムシートは、接着剤により相互に接着されて一体化され、
前記第1の突起部は、前記第2のプリズムシートの前記他方の面に接着され、前記第2の突起部は、前記第2のプリズムシートの前記他方の面から所定の距離だけ離れて配置され、
前記第1の突起部の高さh1が、前記拡散シートのベースフィルムの一方の面から前記第1の突起部の最上端までの高さであり、前記第2の突起部の高さh2が、前記拡散シートの前記ベースフィルムの一方の面から前記第2の突起部の最上端までの高さであるとき、
前記第2の突起部の高さh2は、前記第1の突起部の高さh1に比べて小さく、
前記第2の突起部の高さh2は、下記の式(1)に基づいて設定され、
h1:h2=1:x (1)
ここで、0.25≦x≦0.6であり、
前記第1の突起部が、前記拡散シートの前記ベースフィルムに接する第1の面の直径及び前記第1の突起部の高さh1は、下記の式(2)に基づいて設定され、
d1:h1=1:y (2)
ここで、d1は、前記第1の突起部の前記第1の面の直径であり、y≦0.5であり、
前記第2の突起部が、前記拡散シートの前記ベースフィルムに接する第2の面の直径及び前記第2の突起部の高さh2は、下記の式(3)に基づいて設定され、
d2:h2=1:z (3)
ここで、d2は、前記第2の突起部の前記第2の面の直径であり、z≧0.15であり、
前記第1の突起部の高さh 1 が前記第2の突起部の高さh 2 より大きく、前記第1の突起部の高さh 1 と前記第2の突起部の高さh 2 との差が6.0μm~11.2μmの範囲内にある光学フィルム。 - 前記第1の突起部の前記拡散シートのベースフィルムに接する第1の面は、円形であり、
前記第2の突起部の前記拡散シートの前記ベースフィルムに接する第2の面は、円形である、請求項1に記載の光学フィルム。 - 前記第2のプリズムシートと、前記拡散シートとは、接着剤により接着されて一体化されている、請求項1に記載の光学フィルム。
- 前記第1の突起部に含まれる複数の突起の高さは、同一であり、
前記第2の突起部に含まれる複数の突起の高さは同一である、請求項1に記載の光学フィルム。 - 前記第1の突起部に含まれる複数の突起及び前記第2の突起部に含まれる複数の突起は、ランダムに配置される、請求項1に記載の光学フィルム。
- 前記拡散シートの他方の面に光の拡散のための複数の突起をさらに含む、請求項1に記載の光学フィルム。
- 前記第1の突起部は、前記第2の突起部の複数の突起間に一部が重なって形成される、請求項1に記載の光学フィルム。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020180122651A KR102214157B1 (ko) | 2018-10-15 | 2018-10-15 | 광학 필름 |
| KR10-2018-0122651 | 2018-10-15 |
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| Publication Number | Publication Date |
|---|---|
| JP2020076978A JP2020076978A (ja) | 2020-05-21 |
| JP7587248B2 true JP7587248B2 (ja) | 2024-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2019188947A Active JP7587248B2 (ja) | 2018-10-15 | 2019-10-15 | 光学フィルム |
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| Country | Link |
|---|---|
| US (1) | US11048038B2 (ja) |
| JP (1) | JP7587248B2 (ja) |
| KR (1) | KR102214157B1 (ja) |
| CN (1) | CN111045249B (ja) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| US12411271B2 (en) * | 2021-08-09 | 2025-09-09 | Ubright Optronics Corporation | Composite quantum dot optical film comprising first and second optical prism films |
| KR102599217B1 (ko) * | 2021-09-23 | 2023-11-08 | 주식회사 엘엠에스 | 광학 필름 및 이를 포함하는 백라이트 유닛 |
| KR102859803B1 (ko) * | 2023-04-06 | 2025-09-16 | 주식회사 엘엠에스 | 광학 필름 |
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| JP3130341U (ja) | 2006-09-22 | 2007-03-22 | 長興化学工業股▲ふん▼有限公司 | 光学膜 |
| JP2009122160A (ja) | 2007-11-12 | 2009-06-04 | Toppan Printing Co Ltd | レンズシート及びそれを用いたディスプレイ装置 |
| JP2010066309A (ja) | 2008-09-08 | 2010-03-25 | Optmate Corp | 積層光学フィルムおよび光学デバイス |
| KR101407440B1 (ko) | 2013-09-03 | 2014-06-16 | 신화인터텍 주식회사 | 복합 광학 시트 및 이를 포함하는 광원 어셈블리 |
| US20150138781A1 (en) | 2012-05-10 | 2015-05-21 | Lms Co., Ltd. | Optical Sheet Unit |
| 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 |
| US20170199309A1 (en) | 2016-01-12 | 2017-07-13 | Optivision Technology Inc. | Optical device and diffusion film |
| JP2018516381A (ja) | 2015-04-03 | 2018-06-21 | エルエムエス カンパニー リミテッドLms Co., Ltd. | 光学シート及びこれを備えたバックライトユニット |
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| Publication number | Priority date | Publication date | Assignee | Title |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20200042270A (ko) | 2020-04-23 |
| CN111045249B (zh) | 2022-12-13 |
| JP2020076978A (ja) | 2020-05-21 |
| US20200116919A1 (en) | 2020-04-16 |
| CN111045249A (zh) | 2020-04-21 |
| US11048038B2 (en) | 2021-06-29 |
| KR102214157B1 (ko) | 2021-02-10 |
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