KR20070056902A - Photo diffusion film - Google Patents
Photo diffusion film Download PDFInfo
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- KR20070056902A KR20070056902A KR1020060038754A KR20060038754A KR20070056902A KR 20070056902 A KR20070056902 A KR 20070056902A KR 1020060038754 A KR1020060038754 A KR 1020060038754A KR 20060038754 A KR20060038754 A KR 20060038754A KR 20070056902 A KR20070056902 A KR 20070056902A
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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
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
- G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
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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
- B29D11/0074—Production of other optical elements not provided for in B29D11/00009- B29D11/0073
- B29D11/00788—Producing optical films
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
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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
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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
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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
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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
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2300/00—Characterised by the use of unspecified polymers
Abstract
Description
도 1은 본 발명에 따른 광확산필름을 나타내는 단면도1 is a cross-sectional view showing a light diffusing film according to the present invention
*도면의 주요부분에 대한 부호의 설명** Explanation of symbols for main parts of drawings *
1 : 플라스틱 기재 3 : 광확산층DESCRIPTION OF SYMBOLS 1: Plastic base material 3: Light-diffusion layer
5 : 블록킹 방지층5: blocking prevention layer
본 발명은 광확산필름에 관한 것으로, 보다 상세하게는 연성화된 자외선 경화형 수지를 사용하고 유기입자를 총중량에 대하여 20-40중량% 첨가하여 필름의 전면과 배면에 각각 광확산층과 블록킹 방지층을 형성하여 광확산효과가 우수하면서 표면이 매끄럽고 컬링 현상이 나타나지 않도록 한 광확산필름에 관한 것이다.The present invention relates to a light diffusion film, and more particularly, using a softened ultraviolet curable resin and adding 20-40% by weight of organic particles to the total weight to form a light diffusion layer and a blocking prevention layer on the front and back surfaces of the film, respectively. The present invention relates to a light diffusing film having excellent light diffusion effect and smooth surface and no curling phenomenon.
광확산필름은 백라이트 유닛(Back Light Unit)의 형광램프에서 나온 빛을 산란, 반사, 굴절시켜 빛을 확산시킴과 동시에 빛의 투과가 많이 이루어지도록 하여 LCD 화면 전체에 빛을 골고루 확산시켜 주는 역할을 한다.The light diffusing film diffuses, reflects and refracts the light from the fluorescent lamp of the back light unit to diffuse the light and spread the light evenly throughout the LCD screen. do.
이러한 광확산필름의 제조 방식은 크게 열경화 방식과 자외선 경화 방식으로 나눌 수 있다.The manufacturing method of such a light diffusing film can be largely divided into a thermosetting method and an ultraviolet curing method.
이 중 열경화 방식은 고온 경화가 많기 때문에 고온에서 변형되는 소재는 사용할 수 없고, 경화시키는데 에너지 소비가 커서 비용이 많이 든다. 또한, 경화 장치(heating oven)가 크기 때문에 설치 면적이 크고, 경화 시간이 수 분에서 수 시간 단위이며 72시간의 후경화 공정을 필요로 하기 때문에 생산성과 제품의 균일성이 떨어진다. 또한, 가교제로 이소시아네이트(isocyanate)를 사용함으로써 제품의 칼라 인덱스(Color Index)가 황색으로 치우치는 경향이 있으며 공정 중 건조시 코팅제의 이탈현상으로 인한 이물 생성은 제품 품질을 저하시키는 원인으로 작용한다.Among them, the thermosetting method is difficult to use a material that is deformed at a high temperature due to the high temperature hardening, and the energy consumption is high to harden, which is expensive. In addition, since the heating oven is large, the installation area is large, and the curing time is several minutes to several hours and requires 72 hours of post-curing process, resulting in poor productivity and uniformity of the product. In addition, the use of isocyanate as a crosslinking agent tends to shift the color index of the product to yellow, and the formation of foreign substances due to the detachment of the coating agent during drying in the process acts as a cause of deterioration of product quality.
자외선(Ultraviolet) 경화 방식이란 자외선을 도료 성분 중의 광개시제가 흡수하여 반응성을 나타낸 후 모노머 또는 올리고머(oligomer)와 반응하여 중합을 일으키는 것을 이용한 경화 방식으로 열처리가 곤란한 물질에 적용이 가능하며 열경화 방식에 비해 저장 안정성도 우수하고 상온에서 수 초 내에 경화가 가능하므로 생산성 면에서도 우수하여 다양한 분야에서 이용되는 중요한 코팅 기술이다.Ultraviolet curing method is a curing method that absorbs ultraviolet rays by photo-initiator in the paint component and shows reactivity, and then reacts with monomer or oligomer to cause polymerization. Compared with its excellent storage stability and hardening in seconds at room temperature, it is also an important coating technology used in various fields due to its excellent productivity.
자외선 경화형 수지를 사용한 광확산필름 제조 방식은 대한민국 특허 공개번호제 10-2005-0004231호 등에 일부 소개되었지만, 몇 가지 문제점으로 인해 실제 생산 공정에 적용되지 못하고 있다. The light diffusion film manufacturing method using the ultraviolet curable resin has been introduced in part of the Republic of Korea Patent Publication No. 10-2005-0004231, etc., but due to some problems are not applied to the actual production process.
상기한 문제점을 살펴보면, 투명 플라스틱 기재의 한쪽 면에 일정 두께 이상의 도막이 적층되면 자외선 경화시 코팅된 도막의 수축으로 인해 기재의 컬링(Curling)이 발생된다. 그리고 사용되는 수지의 경도가 높아서 확산필름 컷팅(Cutting)시 코팅 도막의 깨짐(Crack)과 이물 발생현상이 나타나며, 유기입자가 저중량비로 투입되어 실제적 광확산 기능보다 소광 또는 무광 효과가 우선되어 광학적 특성의 저하가 발생되어 광확산필름으로 적용이 불가능한 경우가 많았다.Looking at the above problems, when a coating film of a predetermined thickness or more is laminated on one surface of the transparent plastic substrate, curling of the substrate occurs due to shrinkage of the coated coating film during UV curing. The high hardness of the resin used causes cracking and foreign matters in the coating film during cutting of the diffusion film.In addition, the organic particles are introduced at low weight ratio, so that the matting or matting effect is given priority over the actual light diffusion function. In many cases, it was impossible to apply the light diffusion film due to the deterioration of the film.
상기한 바와 같은 문제점을 해결하기 위한 본 발명의 목적은 연성화된 자외선 경화형 수지를 사용하고 유기입자를 총중량에 대하여 20-40중량% 첨가하여 필름의 전면과 배면에 각각 광확산층과 블록킹 방지층을 형성하여 광확산 효과가 우수하면서 표면이 매끄럽고 컬링 현상이 나타나지 않도록 하는 데 있다.An object of the present invention for solving the above problems is to use a softened UV curable resin and add 20-40% by weight of organic particles to the total weight to form a light diffusion layer and a blocking prevention layer on the front and back of the film, respectively The excellent light diffusion effect, smooth surface and no curling phenomenon.
상기한 목적을 달성하기 위한 본 발명의 특징은 연성화된 자외선 경화형 수지에 유기입자가 총중량에 대하여 20-40중량% 첨가되어 플라스틱 기재의 전면에 5-30㎛ 두께로 코팅형성된 광확산층과, 상기한 연성화된 자외선 경화형 수지에 유기입자가 총중량에 대하여 3-10중량% 첨가되어 플라스틱 기재의 후면에 1-20㎛ 두께로 코팅 형성된 블록킹 방지층으로 구성되는 광확산 필름을 제공하여, 광확산 효과가 우수하면서 표면이 매끄럽고 컬링 현상이 나타나지 않도록 한 것이다.Features of the present invention for achieving the above object is a light diffusing layer formed by coating 20-50% by weight of the organic particles to the total weight of the flexible UV curable resin to a thickness of 5-30㎛ on the front surface of the plastic substrate, Organic light is added to the softened UV curable resin by 3-10% by weight based on the total weight to provide a light diffusion film composed of a blocking prevention layer formed on the back of the plastic substrate to a thickness of 1-20㎛, while excellent in light diffusion effect The surface is smooth and no curling occurs.
이상과 같은 특징을 갖는 본 발명의 실시예를 하기에서 첨부된 도면을 참조하여 보다 상세하게 살펴본다.An embodiment of the present invention having the above characteristics will be described in more detail with reference to the accompanying drawings.
도 1은 본 발명에 따른 광확산필름을 나타내는 단면도로서, 플라스틱 기재(1)의 전면에 광확산층(3)이 5-30㎛ 두께로 코팅 형성되고, 플라스틱 기재(1)의 후면에 블록킹 방지층(5)이 1-20㎛ 두께로 코팅 형성된다.1 is a cross-sectional view showing a light diffusing film according to the present invention, the light diffusing layer (3) is formed on the front surface of the
상기한 구성에서 광확산층은 연성화된 자외선 경화형 수지 60-80중량%에 유기입자를 20-40중량% 첨가한 것이고, 블록킹 방지층은 연성화된 자외선 경화형 수지90-97중량%에 유기입자를 3-10중량% 첨가한 것이다.In the above constitution, the light diffusion layer is 20-40% by weight of organic particles added to 60-80% by weight of the softened UV-curable resin, and the blocking layer is 3-10% by weight of organic particles of 90-97% by weight of the softened UV-curable resin. It is added by weight.
한편, 자외선 경화형 수지는 올리고머와 모노머, 광중합 개시제, 유기용제 및 분산제로 구성되며, 상기한 자외선 경화형 수지를 연성화하는 것은 올리고머와 모노머, 광중합 개시제, 유기용제를 적절하게 혼합하여 이루어진다.On the other hand, an ultraviolet curable resin consists of an oligomer, a monomer, a photoinitiator, an organic solvent, and a dispersing agent, and softening the said ultraviolet curable resin consists of mixing an oligomer, a monomer, a photoinitiator, and an organic solvent suitably.
이중, 올리고머에는 에폭시아크릴레이트, 우레탄아크릴레이트, 폴리에스테르아크릴레이트, 실리콘아크릴레이트, 폴리에텔아크릴레이트, 폴리올아크릴레이트, 멜라민아크릴레이트 등의 아크릴레이트류, 에폭시수지, 폴리에스테르메타아크릴레이트, 폴리에텔메타아크릴레이트 등의 메타아크릴레이트류, 불포화폴리에스테르류, 스티렌수지계류 등이 5-20 중량%가 사용된다.Of these, oligomers include acrylates such as epoxy acrylates, urethane acrylates, polyester acrylates, silicone acrylates, polyether acrylates, polyol acrylates, and melamine acrylates, epoxy resins, polyester methacrylates, and polyethers. 5-20 weight% of methacrylates, such as methacrylate, unsaturated polyesters, and styrene resins are used.
모노머에는 아크릴산-2-에틸메틸헥실, 아크릴산메톡시에틸, 아크릴산부틸 등의 아크릴산에스테르류, 아크릴아미드, 메타아크릴아미드 등의 불포화칼본산아미드, 디프로필렌글리콜디아크릴레이트, 에틸렌글리콜아크릴레이트, 프로필렌글리콜디메타아크릴레이트, 디에틸렌글리콜디메타아크릴레이트 등의 다관능성 화합물, 아크릴산-2-에틸 등의 불포화산의 치환 아미노알콜-에스테르류, 스틸렌, C-메틸스틸렌 등의 스틸렌 모노머, 트리메티롤프로판트리티오크릴레이트, 트리메티롤프로판트리티오르로필레이트, 벤타에리스리톨테트라티오글리콜 등의 폴리티올화합물을 2~10중량%가 사용된다.Examples of the monomer include acrylic acid esters such as 2-ethyl methylhexyl acrylate, methoxyethyl acrylate and butyl acrylate, unsaturated carboxylic acid amides such as acrylamide and methacrylamide, dipropylene glycol diacrylate, ethylene glycol acrylate and propylene glycol. Polyfunctional compounds such as dimethacrylate and diethylene glycol dimethacrylate, substituted amino alcohol esters of unsaturated acids such as 2-ethyl acrylate, styrene monomers such as styrene and C-methyl styrene, and trimetholpropane 2-10 weight% of polythiol compounds, such as a trithio acrylate, a trimethol propane tri thio lorophilate, and a Venterierythritol tetrathioglycol, are used.
광중합 개시제는 캄파퀴논, 알파-나프톨, 벤질, 2,4-디에틸티오키산톤, 트리 메틸벤조일 디페닐술핀옥시드, 디메틸아미노에틸 메타크릴레이트, n-부틸아민, 트리에틸아민, 4-디메틸아미노안식향산 이소아밀, 히드로실란류, 술포닐히드라지드 유도체를 1~5 중량%가 사용된다.The photopolymerization initiator is camphorquinone, alpha-naphthol, benzyl, 2,4-diethylthioquixanthone, tri methylbenzoyl diphenylsulpinoxide, dimethylaminoethyl methacrylate, n-butylamine, triethylamine, 4-
유기용제는 메틸에틸케톤, 아세톤, 메틸부틸케톤, 메틸이소부틸케톤 등의 케톤류, 메틸알콜, 에틸알콜, 이소프로필알콜 등의 알콜류, 벤젠, 톨루엔, 자일렌 등의 방향족 탄화수소류, 에틸아세테이트, 부틸아세테이트 등의 에스테르류를 40~80 중량%로 혼합하여 사용된다. Organic solvents include ketones such as methyl ethyl ketone, acetone, methyl butyl ketone and methyl isobutyl ketone, alcohols such as methyl alcohol, ethyl alcohol and isopropyl alcohol, aromatic hydrocarbons such as benzene, toluene and xylene, ethyl acetate and butyl Ester, such as acetate, is used by mixing at 40 to 80% by weight.
유기입자는 입도분포도 및 입경 크기가 균일한 단분산 유기입자와 입도분포도 및 입경 크기가 균일하지 않은 다분산 유기입자로 분류되며, 폴리메틸메타크릴레이트, 에틸메타크릴레이트, 노말부틸메타크릴레이트, 이소부틸메타크릴레이트, 아크릴아미드, 메티롤아크릴아미드, 글리시딜메타크릴레이트, 에틸아크릴레이트, 노말부틸아크릴레이트, 이소부틸아크릴레이트 등의 아크릴계, 폴리에틸렌, 폴리스티렌, 폴리프로필렌 등의 올레핀계를 20~40 중량%가 사용된다.Organic particles are classified into monodisperse organic particles with uniform particle size distribution and particle size, polydisperse organic particles with uniform particle size distribution and particle size, and include polymethyl methacrylate, ethyl methacrylate, normal butyl methacrylate, Olefins such as isobutyl methacrylate, acrylamide, methrolacrylamide, glycidyl methacrylate, ethyl acrylate, normal butyl acrylate, isobutyl acrylate, and olefins such as polyethylene, polystyrene, and polypropylene. 40 weight percent is used.
분산제는 3-7중량%가 사용된다.Dispersant is used 3-7% by weight.
이하 본 발명에 따른 광확산 필름을 제조하기 위한 광확산층과 블록킹 방지층의 조성예를 하기에서 살펴본다.Hereinafter, a composition example of the light diffusion layer and the blocking prevention layer for manufacturing the light diffusion film according to the present invention will be described below.
<< 실시예1Example 1 >>
투명 플라스틱 기재로 투명 폴리에스테르 필름(A4300, 125,188㎛, 일본 TOYOBO사 제품/ XG531, 125,188㎛, TORAY-SAEHAN社 제품/ SH36H, 125,188㎛, SKC社 / FHSO, 125㎛, KOLON社/ 일본 Mitsubishi社), 폴리카보네이트 필름(LOFO社)의 한 면에 블로킹 방지층 도포액을 마이크로 그라비아, 그라비아, 슬롯-다이를 사용하여 10~100㎛ 두께로 도포하여 건조 후, 경화시킨 다음에 투명 폴리에스테르 필름의 반대면에 광확산층 도포액을 마이크로 그라비아, 그라비아, 슬롯-다이를 사용하여 1~50㎛ 두께로 도포하여 건조 후 경화 시켜서 광확산필름을 제조한다.Transparent polyester film (A4300, 125,188㎛, manufactured by TOYOBO Japan / XG531, 125,188㎛, manufactured by TORAY-SAEHAN / SH36H, 125,188㎛, SKC / FHSO, 125㎛, KOLON / Mitsubishi, Japan) , Applying anti-blocking layer coating liquid on one side of the polycarbonate film (LOFO Co., Ltd.) using a micro gravure, gravure, slot-die with a thickness of 10 ~ 100㎛ dried, cured and then the opposite side of the transparent polyester film The light diffusion layer coating solution is applied to a thickness of 1 ~ 50㎛ using micro gravure, gravure, slot-die, dried and cured to prepare a light diffusion film.
상기에서 광확산층은 우레탄아크릴레이트 올리고머 10 중량%, 아크릴아미드 모노머 5 중량%, 알파-나프톨 광중합개시제 2 중량%, 메틸에틸케톤 20 중량%, 이소프로필알콜 20 중량%, 톨루엔 10 중량%, 폴리메틸메타크릴레이트 다분산 구형입자 28 중량%(평균입경 8㎛, MBX-8, 일본 Sekisui사 제품), 분산제 5 중량% (Disperbyk-168, 독일 BYK Chemie사 제품)로 조성된다.In the light diffusion layer, the urethane acrylate oligomer 10% by weight, acrylamide monomer 5% by weight, alpha-naphthol photoinitiator 2% by weight, methyl ethyl ketone 20% by weight, isopropyl alcohol 20% by weight, toluene 10% by weight, polymethyl It is composed of 28% by weight of methacrylate polydisperse spherical particles (average particle size 8 µm, MBX-8, manufactured by Sekisui, Japan), and 5% by weight of dispersant (Disperbyk-168, manufactured by BYK Chemie, Germany).
블로킹 방지층은 우레탄아크릴레이트 올리고머 12 중량%, 아크릴아미드 모노머 6 중량%, 알파-나프톨 광중합개시제 2 중량%, 메틸에틸케톤 28 중량%, 메틸이소부틸케톤 28 중량%, 톨루엔 14 중량%, 폴리메틸메타크릴레이트 다분산 구형입자 5 중량%(평균입경 5㎛, MBX-5, 일본 Sekisui사 제품), 분산제 5 중량% (Disperbyk-168, 독일 BYK Chemie사 제품)로 조성된다.The antiblocking layer comprises 12% by weight of urethane acrylate oligomer, 6% by weight of acrylamide monomer, 2% by weight of alpha-naphthol photoinitiator, 28% by weight of methyl ethyl ketone, 28% by weight of methyl isobutyl ketone, 14% by weight of toluene, polymethylmetha It is composed of 5% by weight of acrylate polydisperse spherical particles (average particle diameter: 5 μm, MBX-5, manufactured by Sekisui, Japan), and 5% by weight of dispersant (Disperbyk-168, manufactured by BYK Chemie, Germany).
<< 실시예2Example 2 >>
실시예1과 동일한 조건과 방법을 사용하여 아래와 같은 도포액 조성으로 광확산필름을 제조하였으며, 광확산층은 폴리에텔메타크릴레이트 올리고머 8 중량%, 디에틸렌글리콜디메타아크릴레이트 모노머 3 중량%, 트리에틸아민 광중합개시제 1 중량%, 메틸에틸케톤 29 중량%, 자일렌 29 중량%, 폴리메틸메타크릴레이트 다분산 구형입자 25 중량%(평균입경 8㎛, MB30X-8, 일본 Sekisui사 제품), 분산제 5 중량% (Disperbyk-169, 독일 BYK Chemie사 제품)를 사용하고,Using the same conditions and methods as in Example 1, a light diffusion film was prepared using the following coating liquid composition, and the light diffusion layer was 8% by weight of polyether methacrylate oligomer, 3% by weight of diethylene glycol dimethacrylate monomer, and
블로킹 방지층은 폴리에텔메타크릴레이트 올리고머 10 중량%, 디에틸렌글리콜디메타아크릴레이트 모노머 4 중량%, 트리에틸아민 광중합개시제 1 중량%, 이소프로필알콜 38.5 중량%, 톨루엔 38.5 중량%, 폴리메틸메타크릴레이트 다분산 구형입자 3 중량%(평균입경 5㎛, MB30X-5, 일본 Sekisui사 제품), 분산제 5 중량% (Disperbyk-169, 독일 BYK Chemie사 제품)를 사용한다.The antiblocking layer comprises 10% by weight of polyether methacrylate oligomer, 4% by weight of diethylene glycol dimethacrylate monomer, 1% by weight of triethylamine photopolymerization initiator, 38.5% by weight of isopropyl alcohol, 38.5% by weight of toluene,
<< 실시예3Example 3 >>
실시예1과 동일한 조건과 방법을 사용하여 아래와 같은 도포액 조성으로 광확산필름을 제조하였다.Using the same conditions and methods as in Example 1, a light diffusion film was prepared with the following coating liquid composition.
광확산층은 폴리에스테르아크릴레이트 올리고머 12 중량%, 아크릴산메톡시에틸 모노머 6 중량%, 트리에틸아민 광중합개시제 2 중량%, 이소프로필알콜 24.5 중량%, 벤젠 24.5 중량%, 폴리메틸메타크릴레이트 다분산 구형입자 25 중량%(평균입경 8㎛, MB30X-8, 일본 Sekisui사 제품), 분산제 6 중량% (Disperbyk-164, 독일 BYK Chemie사 제품)를 사용하고,The light diffusion layer comprises 12% by weight of polyester acrylate oligomer, 6% by weight of methoxyethyl acrylate monomer, 2% by weight of triethylamine photopolymerization initiator, 24.5% by weight of isopropyl alcohol, 24.5% by weight of benzene, polymethyl methacrylate polydisperse sphere 25 weight% of particles (average particle size: 8 µm, MB30X-8, manufactured by Sekisui, Japan), and 6 weight% of a dispersant (Disperbyk-164, manufactured by BYK Chemie, Germany),
블로킹 방지층은 폴리에스테르아크릴레이트 올리고머 14 중량%, 아크릴산메톡시에틸 모노머 9중량%, 트리에틸아민 광중합개시제 2 중량%, 메틸알콜 33 중량%, 톨루엔 33 중량%, 폴리메틸메타크릴레이트 다분산 구형입자 3 중량%(평균입경 5㎛, MB30X-5, 일본 Sekisui사 제품), 분산제 6 중량% (Disperbyk-164, 독일 BYK Chemie사 제품)를 사용한다.The antiblocking layer comprises 14% by weight of polyester acrylate oligomer, 9% by weight of methoxyethyl acrylate monomer, 2% by weight of triethylamine photopolymerization initiator, 33% by weight of methyl alcohol, 33% by weight of toluene, polymethyl methacrylate polydisperse
<< 실시예4Example 4 >>
실시예1과 동일한 조건과 방법을 사용하여 아래와 같은 도포액 조성으로 광확산필름을 제조하였다.Using the same conditions and methods as in Example 1, a light diffusion film was prepared with the following coating liquid composition.
광확산층은 우레탄아크릴레이트 올리고머 8 중량%, 에틸렌글리콜아크릴레이트 모노머 3 중량%, 트리메틸벤조일 디페닐술핀옥시드 광중합개시제 1 중량%, 메틸에틸케톤 25 중량%, 이소프로필알콜 25 중량%, 자일렌 14 중량%, 폴리메틸메타크릴레이트 다분산 구형입자 20 중량%(평균입경 10㎛, MR-10HG, 일본 Soken사 제품), 분산제 4 중량% (Disperbyk-161, 독일 BYK Chemie사 제품)를 사용하고,The light diffusing layer is 8% by weight of urethane acrylate oligomer, 3% by weight of ethylene glycol acrylate monomer, 1% by weight of trimethylbenzoyl diphenylsulpinoxide photoinitiator, 25% by weight of methyl ethyl ketone, 25% by weight of isopropyl alcohol, xylene 14 20% by weight, polymethyl methacrylate polydisperse spherical particles (average particle size 10㎛, MR-10HG, manufactured by Soken Japan), 4% by weight of dispersant (Disperbyk-161, manufactured by BYK Chemie, Germany),
블로킹 방지층은 우레탄아크릴레이트 올리고머 10 중량%, 에틸렌글리콜아크릴레이트 모노머 4 중량%, 트리메틸벤조일 디페닐술핀옥시드 광중합개시제 1 중량%, 메틸에틸케톤 30 중량%, 메틸알콜 30 중량%, 자일렌 18 중량%, 폴리메틸메타크릴레이트 다분산 구형입자 3 중량%(평균입경 5㎛, MR-7HG, 일본 Soken사 제품), 분산제 4 중량% (Disperbyk-161, 독일 BYK Chemie사 제품)를 사용한다.The antiblocking layer comprises 10% by weight of urethane acrylate oligomer, 4% by weight of ethylene glycol acrylate monomer, 1% by weight of trimethylbenzoyl diphenylsulpinoxide photoinitiator, 30% by weight of methyl ethyl ketone, 30% by weight of methyl alcohol, 18% by weight of xylene %, 3% by weight of polymethyl methacrylate polydisperse spherical particles (average particle diameter: 5 mu m, MR-7HG, manufactured by Soken Japan), and 4% by weight of dispersant (Disperbyk-161, manufactured by BYK Chemie, Germany) are used.
<< 비교예1Comparative Example 1 >>
실시예1과 동일한 조건과 방법을 사용하여 아래와 같은 도포액 조성으로 광확산필름을 제조하였다.Using the same conditions and methods as in Example 1, a light diffusion film was prepared with the following coating liquid composition.
광확산층은 우레탄아크릴레이트 올리고머 10 중량%, 아크릴아미드 모노머 5 중량%, 알파-나프톨 광중합개시제 2 중량%, 메틸에틸케톤 24 중량%, 메틸이소부틸케톤 24 중량%, 톨루엔 12 중량%, 폴리메틸메타크릴레이트 다분산 구형입자 18 중량%(평균입경 8㎛, MBX-8, 일본 Sekisui사 제품), 분산제 5 중량% (Disperbyk-168, 독일 BYK Chemie사 제품), The light diffusion layer is 10% by weight urethane acrylate oligomer, 5% by weight acrylamide monomer, 2% by weight alpha-naphthol photoinitiator, 24% by weight methyl ethyl ketone, 24% by weight methyl isobutyl ketone, 12% by weight toluene, polymethylmetha 18% by weight of acrylate polydisperse spherical particles (average particle size: 8 μm, MBX-8, manufactured by Sekisui, Japan), 5% by weight of dispersant (Disperbyk-168, manufactured by BYK Chemie, Germany),
블로킹 방지층은 우레탄아크릴레이트 올리고머 12 중량%, 아크릴아미드 모노머 6 중량%, 알파-나프톨 광중합개시제 2 중량%, 이소프로필알콜 28 중량%, 에틸아세테이트 28 중량%, 톨루엔 14 중량%, 폴리메틸메타크릴레이트 다분산 구형입자 5 중량%(평균입경 5㎛, MBX-5, 일본 Sekisui사 제품), 분산제 5 중량% (Disperbyk-168, 독일 BYK Chemie사 제품)로 조성된다.The antiblocking layer comprises 12% by weight of urethane acrylate oligomer, 6% by weight of acrylamide monomer, 2% by weight of alpha-naphthol photoinitiator, 28% by weight of isopropyl alcohol, 28% by weight of ethyl acetate, 14% by weight of toluene, polymethylmethacrylate. It is composed of 5% by weight of polydisperse spherical particles (average particle size: 5 mu m, MBX-5, manufactured by Sekisui, Japan), and 5% by weight of dispersant (Disperbyk-168, manufactured by BYK Chemie, Germany).
<< 비교예2Comparative Example 2 >>
실시예1과 동일한 조건과 방법을 사용하여 아래와 같은 도포액 조성으로 광확산필름을 제조하였다.Using the same conditions and methods as in Example 1, a light diffusion film was prepared with the following coating liquid composition.
광확산층은 폴리에텔메타아크릴레이트 올리고머 6 중량%, 에틸렌글리콜아크릴레이트 모노머 5 중량%와 2,4-디에틸티오키산톤 광중합개시제 1 중량%, 메틸에틸케톤 31.5 중량%, 톨루엔 31.5 중량%, 폴리메틸메타크릴레이트 다분산 구형입자 20 중량%(평균입경 8㎛, MB30X-8, 일본 Sekisui사 제품), 분산제 5 중량% (Disperbyk-169, 독일 BYK Chemie사 제품)으로 조성되고,The light diffusion layer comprises 6% by weight of polyether methacrylate oligomer, 5% by weight of ethylene glycol acrylate monomer, 1% by weight of 2,4-diethylthiokisanthone photoinitiator, 31.5% by weight of methyl ethyl ketone, 31.5% by weight of toluene, poly It is composed of 20% by weight of methyl methacrylate polydisperse spherical particles (average particle size 8㎛, MB30X-8, manufactured by Sekisui, Japan), 5% by weight of dispersant (Disperbyk-169, manufactured by BYK Chemie, Germany),
블로킹 방지층은 폴리에텔메타아크릴레이트 올리고머 8 중량%, 에틸렌글리콜아크릴레이트 모노머 6 중량%와 2,4-디에틸티오키산톤 광중합개시제 1 중량%, 메틸 에틸케톤 38.5 중량%, 자일렌 38.5 중량%, 폴리메틸메타크릴레이트 다분산 구형입자 3 중량%(평균입경 5㎛, MB30X-5, 일본 Sekisui사 제품), 분산제 5 중량% (Disperbyk-169, 독일 BYK Chemie사 제품)으로 조성된다.The antiblocking layer comprises 8% by weight of polyethermethacrylate oligomer, 6% by weight of ethylene glycol acrylate monomer, 1% by weight of 2,4-diethylthioquixanthone photoinitiator, 38.5% by weight of methyl ethyl ketone, 38.5% by weight of xylene, It is composed of 3% by weight of polymethyl methacrylate polydisperse spherical particles (average particle diameter: 5 μm, MB30X-5, manufactured by Sekisui, Japan), and 5% by weight of dispersant (Disperbyk-169, manufactured by BYK Chemie, Germany).
<< 비교예3Comparative Example 3 >>
실시예1과 동일한 조건과 방법을 사용하여 아래와 같은 도포액 조성으로 광확산필름을 제조하였다.Using the same conditions and methods as in Example 1, a light diffusion film was prepared with the following coating liquid composition.
광확산층은 우레탄아크릴레이트 올리고머 12 중량%, 아크릴아미드 모노머 6 중량%, 알파-나프톨 광중합개시제 3 중량%, 메틸에틸케톤 28 중량%, 이소프로필알콜 28 중량%, 톨루엔 14 중량%, 실리카 구형입자 5 중량%(평균입경 4.0㎛, SYLOID C803, GRACE Davison사 제품), 분산제 4 중량% (Disperbyk-161, 독일 BYK Chemie사 제품)로 조성된다.The light diffusion layer comprises 12% by weight of urethane acrylate oligomer, 6% by weight of acrylamide monomer, 3% by weight of alpha-naphthol photoinitiator, 28% by weight of methyl ethyl ketone, 28% by weight of isopropyl alcohol, 14% by weight of toluene, silica spherical particles 5 It is composed of weight% (average particle size 4.0㎛, SYLOID C803, manufactured by GRACE Davison), and 4% by weight of dispersant (Disperbyk-161, manufactured by BYK Chemie, Germany).
상기한 표 1은 실시예 1내지 4와 비교예 1내지 3에 따른 헤이즈(Haze), 전광선투과율, 휘도특성을 나타내는 것으로, 헤이즈란 빛이 통과할 때 반사나 흡수 외에 그 재료의 고유 성질에 따라 광선이 확산되어 불투명한 흐린 정도를 말하고, 휘도는 일정한 넓이를 가진 광원 또는 빛의 반사체 표면의 밝기를 나타내는 양을 나타낸다.Table 1 above shows haze, total light transmittance, and luminance characteristics according to Examples 1 to 4 and Comparative Examples 1 to 3, and haze refers to the characteristics of the material in addition to reflection and absorption when light passes. The degree of opacity of the light that is diffused and opaque, and the luminance refers to the amount representing the brightness of the light source or the reflector surface of the light having a constant width.
이상과 같이 구성된 본 발명에 의하면 광확산층의 반대 면에 적정 두께의 도막을 적층하여 컬링현상을 방지하고, 연성화된 자외선 경화형 수지를 사용하여 코팅된 도막의 거칠기를 낮추어 광확산필름의 하단에 위치한 도광판에 스크래치(Scratch)가 발생되지 않도록 하며, 연성화된 자외선 경화형 수지의 사용으로 경도를 일정 수준 이하로 하여 펀칭(Punching)가공시 도막의 깨짐(Crack)현상과 이물을 생성시켜 제품 수율을 떨어뜨리는 현상을 억제하여, 광확산필름의 기계적 물성의 변화가 없으며 유연성 및 후가공성이 우수한 도막을 얻을 수 있게 된다.According to the present invention configured as described above to prevent the curling phenomenon by laminating a coating film of the appropriate thickness on the opposite side of the light diffusion layer, lowering the roughness of the coated coating film using a softened UV curable resin, the light guide plate located at the bottom of the light diffusion film Scratch is prevented from occurring and the hardness is lowered to a certain level by the use of softened UV curable resin, which causes cracks and foreign substances to be generated during punching processing, thereby lowering product yield. By suppressing this, there is no change in the mechanical properties of the light diffusing film and a coating film having excellent flexibility and post-processing property can be obtained.
또한, 유기입자의 중량비를 증가시켜 헤이즈, 전광선투과율 및 휘도 등의 광학적 특성을 향상시켰다.In addition, the weight ratio of the organic particles was increased to improve optical properties such as haze, total light transmittance, and luminance.
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| KR20180111306A (en) * | 2017-03-31 | 2018-10-11 | 도레이케미칼 주식회사 | Reflective polarizing film, light source assembly comprising the same, and display comprising the same |
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| KR20180111306A (en) * | 2017-03-31 | 2018-10-11 | 도레이케미칼 주식회사 | Reflective polarizing film, light source assembly comprising the same, and display comprising the same |
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