TWI523293B - Color conversion film and preparation method thereof - Google Patents
Color conversion film and preparation method thereof Download PDFInfo
- Publication number
- TWI523293B TWI523293B TW102117941A TW102117941A TWI523293B TW I523293 B TWI523293 B TW I523293B TW 102117941 A TW102117941 A TW 102117941A TW 102117941 A TW102117941 A TW 102117941A TW I523293 B TWI523293 B TW I523293B
- Authority
- TW
- Taiwan
- Prior art keywords
- color conversion
- conversion film
- light
- light color
- composition
- Prior art date
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- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007764 slot die coating Methods 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/005—Processes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
- Laminated Bodies (AREA)
- Polymerisation Methods In General (AREA)
Description
本發明係關於一種光色轉換膜及其製造方法,且特別關於一種適用於發光二極體(LED)或有機發光二極體(OLED),並提供優良勻光性之光色轉換膜。 The present invention relates to a light color conversion film and a method of fabricating the same, and in particular to a light color conversion film suitable for use in a light emitting diode (LED) or an organic light emitting diode (OLED) and providing excellent light homogenization.
隨著綠能產業,如太陽能風力發電等再生能源與LED/OLED照明產業的興盛及快速發展,多種節能照明產品已日漸普及於日常生活中。在這些照明產品中,LED/OLED照明器最受矚目。如何提供更亮、更省電且視覺效果更佳的產品,一直是產業主要的研發目的之一。近年來,業界更致力於改良LED/OLED的封裝材料及LED/OLED模組的整合,從各方面針對現有LED/OLED照明模組之取光性不足、耐熱性不足或散熱等問題加以改良,以期提供發光效率更高、穩定且耐用的照明模式。 With the prosperous and rapid development of green energy industry, such as solar wind power generation and renewable energy and LED/OLED lighting industry, a variety of energy-saving lighting products have become increasingly popular in daily life. Among these lighting products, LED/OLED illuminators are the most popular. How to provide brighter, more energy-efficient and better visual effects has always been one of the main research and development objectives of the industry. In recent years, the industry has been working to improve the integration of LED/OLED packaging materials and LED/OLED modules, and to improve the light-receiving, heat-insulating or heat-dissipating problems of existing LED/OLED lighting modules. In order to provide a lighting mode with higher luminous efficiency, stability and durability.
過去改良LED/OLED照明模組的方法非常多元,其中針對封裝材料的改良已廣泛應用於商用照明中。為了不影響視覺效果,此類封裝材料必須具有適當的透光度、折射率等光學性質,較佳具有光學透明性、耐熱性及提供所需黏合功能的黏著性。此外,為了能調節輸出光源的色彩,上述封裝材料中常導入光色轉換粒子或是螢光粉,使得輸出光源在通過封裝材料中之螢光材料後能輸出所需顏色的光源。 In the past, the methods for improving LED/OLED lighting modules were very diverse, and improvements in packaging materials have been widely used in commercial lighting. In order not to affect the visual effect, such encapsulating materials must have appropriate optical properties such as transmittance, refractive index, etc., and preferably have optical transparency, heat resistance, and adhesion to provide a desired bonding function. In addition, in order to adjust the color of the output light source, the color conversion particles or the phosphor powder are often introduced into the packaging material, so that the output light source can output a light source of a desired color after passing through the fluorescent material in the packaging material.
惟,上述封裝材料的改良係針對單一LED/OLED燈泡。因此,習知照明模組中易發生的點光源失效之缺點並無法透過上述改良獲得改善。另外,由於封裝材料常需具有混光效果,使得輸出光源在通過封裝材料中的螢光材料後能輸出所需顏色的光源,因此,針對單一LED/OLED燈泡的封裝會產生整體模組輸出光源的勻度不一,造成視覺效果不佳的情況。 However, the above improvements in packaging materials are directed to a single LED/OLED bulb. Therefore, the disadvantages of the point light source failure that is apt to occur in conventional lighting modules cannot be improved by the above improvements. In addition, since the packaging material often needs to have a light mixing effect, the output light source can output a light source of a desired color after passing through the fluorescent material in the packaging material. Therefore, the package for a single LED/OLED bulb generates an overall module output light source. The uniformity is different, resulting in poor visual effects.
有鑑於此,本發明提供一種具優良勻光性的光色轉換膜,其可用於整個LED/OLED照明模組之封裝製程中,因此,即使LED/OLED照明模組中之某幾個點光源失效,仍能得到勻化輸出的組合光。 In view of this, the present invention provides a light color conversion film with excellent light homogenization, which can be used in the packaging process of the entire LED/OLED lighting module, and therefore, even a certain point light source in the LED/OLED lighting module In the event of failure, the combined light of the homogenized output can still be obtained.
本發明之主要目的在於提供一種光色轉換膜,其可用於LED或OLED等照明模組中以提供具有所需顏色之均勻光。 A primary object of the present invention is to provide a light color conversion film that can be used in a lighting module such as an LED or an OLED to provide uniform light having a desired color.
本發明之光色轉換膜包含:一基材;及一位於該基材上之光色轉換層,其中該光色轉換層係由包含以下組分之組合物所製得:(a)螢光粉;(b)丙烯酸酯官能基之寡聚物;(c)丙烯酸酯官能基之單體;及(d)光起始劑;其中組份(a)為組合物中唯一的粉體;且其中該光色轉換層之厚度為100微米至300微米。 The light color conversion film of the present invention comprises: a substrate; and a light color conversion layer on the substrate, wherein the light color conversion layer is made of a composition comprising the following components: (a) fluorescent light (b) an acrylate functional group oligomer; (c) an acrylate functional monomer; and (d) a photoinitiator; wherein component (a) is the only powder in the composition; Wherein the color conversion layer has a thickness of from 100 micrometers to 300 micrometers.
本發明之另一目的在於提供一種光色轉換膜之製造方法,其包含:將上述之光色轉換層組合物施加於一基材上;及將該組合物固化以形成該光色轉換膜。 Another object of the present invention is to provide a method for producing a light color conversion film comprising: applying the above-described light color conversion layer composition to a substrate; and curing the composition to form the light color conversion film.
11‧‧‧光色轉換層樹脂 11‧‧‧Light color conversion layer resin
12‧‧‧光色轉換層粒子 12‧‧‧Light color conversion layer particles
13‧‧‧基材 13‧‧‧Substrate
14‧‧‧光色轉換層 14‧‧‧Light color conversion layer
圖1係本發明之光色轉換膜的示意圖。 BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of a light color conversion film of the present invention.
為了讓本發明之上述目的、特徵及優點能更明顯易懂,以下配合所附圖式,作詳細說明如下:本發明提供一種光色轉換膜,例如圖1所示,其包含基材13,及在基材13上之包含光色轉換層樹脂11與光色轉換層粒子12的光色轉換層14,其中光色轉換層粒子12即為(a)螢光粉;而光色轉換層樹脂11則包含(b)丙烯酸酯官能基之寡聚物、(c)丙烯酸酯官能基之單體及(d)光起始劑。在本發明之一較佳實施態樣中,光色轉換層無需包含光擴散粒子。 In order to make the above objects, features and advantages of the present invention more comprehensible, the following detailed description will be made with reference to the accompanying drawings. The present invention provides a light color conversion film, such as shown in FIG. And a light color conversion layer 14 comprising a light color conversion layer resin 11 and a light color conversion layer particle 12 on the substrate 13, wherein the light color conversion layer particles 12 are (a) phosphor powder; and the light color conversion layer resin 11 then comprises (b) an acrylate functional oligomer, (c) an acrylate functional monomer, and (d) a photoinitiator. In a preferred embodiment of the invention, the light color conversion layer need not comprise light diffusing particles.
本發明係利用螢光粉,與螢光粉之分子結構相容的丙烯酸酯官能基之單體與寡聚物,及光起始劑,配製成光色轉換層組合物,經由噴墨列印、網版印刷或直接塗佈等製程,在一基材上製作光色轉換層。 The invention utilizes a phosphor powder, a monomer and an oligomer of an acrylate functional group compatible with the molecular structure of the phosphor powder, and a photoinitiator, and is formulated into a light color conversion layer composition via an inkjet column. A process such as printing, screen printing or direct coating is used to fabricate a color conversion layer on a substrate.
本發明所用之基材可為任何本發明所屬技術領域具有通常知識者已知者,較佳係塑膠基材。上述塑膠基材並無特殊限制,其例如但不限於:聚酯樹脂,如聚對苯二甲酸乙二酯(polyethylene terephthalate,PET)或聚萘二甲酸乙二酯(polyethylene naphthalate);聚丙烯酸酯樹脂,如聚甲基丙烯酸甲酯(polymethyl methacrylate,PMMA);聚烯烴樹脂,如聚乙烯或聚丙烯;聚環烯烴樹脂;聚醯胺樹脂,如尼龍6、尼龍66或MXD尼龍(間二甲苯二胺/己二酸共聚物);聚醯亞胺樹脂;聚碳酸酯(PC)樹脂;聚胺基甲酸酯樹脂;聚氯乙烯;三醋酸纖維素;聚乳酸;經取代之烯烴類聚合物,如聚醋酸乙烯酯或聚乙烯醇;共聚物型樹脂,如乙烯-醋酸乙烯共聚物(EVA)、乙烯-乙烯醇共聚物或乙烯-四氟乙烯共聚物;或上述之組合。在本發明中,基材較佳為聚酯樹脂、聚丙烯酸酯樹脂、聚烯烴樹脂、聚環烯烴樹脂、聚醯胺樹脂、聚醯亞胺樹脂、聚碳酸酯樹脂、聚胺基甲酸酯樹 脂、聚氯乙烯、三醋酸纖維素、聚乳酸或其組合;更佳為聚甲基丙烯酸甲酯或聚對苯二甲酸乙二酯。在本發明中,基材之厚度並無特殊限制,通常取決於所欲製得之產品的需求,一般為約1微米(μm)至約500微米,較佳為約35微米至約300微米,更佳為約50微米至約200微米。上述基材之厚度可以包含其範圍內任意數值的較小範圍,如約15微米至約350微米,或約25微米至約250微米。在本發明之一較佳實施態樣中,基材為可撓式基材。 The substrate used in the present invention may be any one known to those skilled in the art to which the present invention pertains, and is preferably a plastic substrate. The plastic substrate is not particularly limited, and is, for example but not limited to, a polyester resin such as polyethylene terephthalate (PET) or polyethylene naphthalate; polyacrylate. Resins, such as polymethyl methacrylate (PMMA); polyolefin resins such as polyethylene or polypropylene; polycycloolefin resins; polyamide resins such as nylon 6, nylon 66 or MXD nylon (m-xylene) Diamine/adipate copolymer); polyimine resin; polycarbonate (PC) resin; polyurethane resin; polyvinyl chloride; cellulose triacetate; polylactic acid; substituted olefin polymerization For example, polyvinyl acetate or polyvinyl alcohol; copolymer type resins such as ethylene-vinyl acetate copolymer (EVA), ethylene-vinyl alcohol copolymer or ethylene-tetrafluoroethylene copolymer; or a combination thereof. In the present invention, the substrate is preferably a polyester resin, a polyacrylate resin, a polyolefin resin, a polycycloolefin resin, a polyamide resin, a polyimide resin, a polycarbonate resin, or a polyurethane. tree Fat, polyvinyl chloride, cellulose triacetate, polylactic acid or a combination thereof; more preferably polymethyl methacrylate or polyethylene terephthalate. In the present invention, the thickness of the substrate is not particularly limited and generally depends on the demand of the desired product, and is generally from about 1 micrometer (μm) to about 500 μm, preferably from about 35 μm to about 300 μm. More preferably, it is from about 50 microns to about 200 microns. The thickness of the substrate described above may comprise a minor range of any value within the range, such as from about 15 microns to about 350 microns, or from about 25 microns to about 250 microns. In a preferred embodiment of the invention, the substrate is a flexible substrate.
本發明係利用高色度的螢光粉作為光色轉換劑,搭配與螢光粉相容之丙烯酸酯官能基之寡聚物及單體,將彼等均勻混合使螢光粉均勻分散以形成組合物,再利用輻射固化法以達到快速固化之目的。本發明方法可以避免習知使用有機溶劑而產生揮發性有機化合物(VOC),及乾燥後樹脂與黏合劑不相容等問題發生。在本發明中,螢光粉是組合物中唯一的粉體,藉由使用特定之與其相容的光色轉換層樹脂,使得螢光粉能夠均勻分散於組合物中,因此可省去額外添加其他光擴散粒子的工序,具有製程簡化與提供勻光功效的優異功效。 The invention utilizes a high chroma fluorescent powder as a light color conversion agent, and is matched with an oligopolymer and a monomer of an acrylate functional group compatible with the fluorescent powder, and uniformly blends them to uniformly disperse the fluorescent powder to form The composition is then subjected to radiation curing to achieve rapid curing. The method of the invention can avoid the problems of using a common solvent to produce a volatile organic compound (VOC), and the resin is incompatible with the binder after drying. In the present invention, the phosphor powder is the only powder in the composition, and the phosphor powder can be uniformly dispersed in the composition by using a specific color-converting layer resin compatible therewith, thereby eliminating the need for additional addition. The process of other light-diffusing particles has the advantages of process simplification and providing uniformity.
適用於本發明組合物中的螢光粉在紫外光-可見光(UV-Vis)吸收光譜之約350奈米(nm)至約490奈米的波長間具有吸收峰,螢光粉分子量為約103至約105,且螢光粉之粒徑為約1微米至約100微米,較佳為約1微米至約50微米,更佳為約5微米至約40微米,最佳為約7微米至約15微米。在本發明中,螢光粉之含量以組合物總重量計為約20重量%至約45重量%,較佳為約25重量%至約45重量%,更佳為約30重量%至約45重量%。上述螢光粉的含量可以包含其範圍內任意數值的較小範圍,如約28重量%至約35重量%,或約32重量%至約41重量%。 Fluorescent powders suitable for use in the compositions of the present invention have absorption peaks in the ultraviolet-visible (UV-Vis) absorption spectrum from about 350 nanometers (nm) to about 490 nm, and the phosphor powder has a molecular weight of about 10 3 to about 10 5 and the phosphor powder has a particle size of from about 1 micron to about 100 microns, preferably from about 1 micron to about 50 microns, more preferably from about 5 microns to about 40 microns, most preferably about 7 microns. Up to about 15 microns. In the present invention, the phosphor powder is present in an amount of from about 20% by weight to about 45% by weight, based on the total weight of the composition, preferably from about 25% by weight to about 45% by weight, more preferably from about 30% by weight to about 45% by weight. weight%. The above phosphor powder may be included in a smaller range of any value within the range, such as from about 28% by weight to about 35% by weight, or from about 32% by weight to about 41% by weight.
適用於本發明中之螢光粉可選自市售品,例如雄鼎科技所生產之螢光粉HSD-81000系列、HSD-83000系列、HSD-85000系列、HSD-87000系列或HSD-8800系列,其實際產品例如:HSD-85000、HSD- 85012、HSD-85020、HSD-85035、HSD-85070、HSD-85080、HSD-86460、HSD-86460、HSD-86455、HSD-86450、HSD-86445、HSD-86455、HSD-86450、HSD-86445、HSD-87100、HSD-87109、HSD-87300、HSD-83520、HSD-83545、HSD-83558、HSD-83566、HSD-83588、HSD-83600、HSD-81509、HSD-83520、HSD-83530、HSD-8861、HSD-8863及HSD-83600。 The phosphor powder suitable for use in the present invention may be selected from commercially available products such as the fluorescent powder HSD-81000 series, HSD-83000 series, HSD-85000 series, HSD-87000 series or HSD-8800 series produced by Xiongding Technology. , its actual products such as: HSD-85000, HSD- 85012, HSD-85020, HSD-85035, HSD-85070, HSD-85080, HSD-86460, HSD-86460, HSD-86455, HSD-86450, HSD-86445, HSD-86455, HSD-86450, HSD-86445, HSD-87100, HSD-87109, HSD-87300, HSD-83520, HSD-83545, HSD-83558, HSD-83566, HSD-83588, HSD-83600, HSD-81509, HSD-83520, HSD-83530, HSD- 8861, HSD-8863 and HSD-83600.
本發明組合物無需包含任何溶劑,但另包含與螢光粉相容之丙烯酸酯官能基之寡聚物、丙烯酸酯官能基單體及光起始劑。 The compositions of the present invention need not comprise any solvent, but additionally comprise oligomers of acrylate functional groups compatible with the phosphor powder, acrylate functional monomers, and photoinitiators.
本發明中所述之(甲基)丙烯酸酯係指甲基丙烯酸酯與丙烯酸酯的總稱。而本發明組合物中的透明樹脂係選用與上述螢光粉相容之丙烯酸酯官能基之寡聚物。適用於本發明中之丙烯酸酯官能基之寡聚物可為(甲基)丙烯酸酯寡聚物,如聚酯(甲基)丙烯酸酯(polyester(meth)acrylate),其較佳例如但不限於聚酯二(甲基)丙烯酸酯(polyester di(meth)acrylate);或聚胺基甲酸酯(甲基)丙烯酸酯,其較佳例如但不限於脂肪族聚胺基甲酸酯(甲基)丙烯酸酯(aliphatic urethane(meth)acrylate)、芳香族聚胺基甲酸酯(甲基)丙烯酸酯(aromatic urethane(meth)acrylate)、脂肪族聚胺基甲酸酯二(甲基)丙烯酸酯(aliphatic urethane di(meth)acrylate)、芳香族聚胺基甲酸酯二(甲基)丙烯酸酯(aromatic urethane di(meth)acrylate)或矽氧烷聚胺基甲酸酯(甲基)丙烯酸酯(siliconized urethane(meth)acrylate)或彼等之混合物。根據本發明,丙烯酸酯官能基之寡聚物較佳為聚胺基甲酸酯(甲基)丙烯酸酯或聚酯(甲基)丙烯酸酯;更佳為脂肪族聚胺基甲酸酯(甲基)丙烯酸酯。該寡聚物之分子量為約1,000至約100,000,較佳為約3,000至約80,000。在本發明中,丙烯酸酯官能基之寡聚物的含量以組合物總重量計為約30重量%至約70重量%,較佳為30重量%至約65重量%,更佳為30重量%至約60重量%。上述寡聚物的含量可以包含其 範圍內任意數值的較小範圍,如約35重量%至約55重量%,或約42重量%至約62重量%。 The (meth) acrylate described in the present invention is a generic term for methacrylate and acrylate. The transparent resin in the composition of the present invention is an oligomer of an acrylate functional group compatible with the above-mentioned phosphor powder. The oligomer of the acrylate functional group suitable for use in the present invention may be a (meth) acrylate oligomer such as a polyester (meth) acrylate, which is preferably, for example but not limited to, Polyester di(meth)acrylate; or polyurethane (meth) acrylate, preferably such as but not limited to aliphatic polyurethane (methyl) ) aliphatic urethane (meth) acrylate, aromatic urethane (meth) acrylate, aliphatic polyurethane bis(meth) acrylate (aliphatic urethane di(meth)acrylate), aromatic urethane di(meth)acrylate or decyl urethane (meth) acrylate (siliconized urethane (meth)acrylate) or a mixture of these. According to the invention, the oligomer of the acrylate functional group is preferably a polyurethane (meth) acrylate or a polyester (meth) acrylate; more preferably an aliphatic urethane (A) Base) acrylate. The oligomer has a molecular weight of from about 1,000 to about 100,000, preferably from about 3,000 to about 80,000. In the present invention, the acrylate functional group oligomer is present in an amount of from about 30% by weight to about 70% by weight, based on the total weight of the composition, preferably from 30% by weight to about 65% by weight, more preferably 30% by weight. Up to about 60% by weight. The content of the above oligomer may include Smaller ranges of any value within the range, such as from about 35 wt% to about 55 wt%, or from about 42 wt% to about 62 wt%.
在本發明組合物中,丙烯酸酯官能基之單體可為單官能基(甲基)丙烯酸酯單體、多官能基(甲基)丙烯酸酯單體或其混合物。丙烯酸酯官能基之單體可進一步提供架橋作用,降低螢光粉析出之現象產生。 In the compositions of the present invention, the acrylate functional monomer can be a monofunctional (meth) acrylate monomer, a polyfunctional (meth) acrylate monomer, or a mixture thereof. The acrylate functional monomer can further provide a bridging action to reduce the occurrence of phosphor powder precipitation.
適用於本發明之單官能基(甲基)丙烯酸酯單體可選自,但不限於,由甲基丙烯酸甲酯(methyl methacrylate)、甲基丙烯酸丁酯、2-苯氧基乙基丙烯酸酯(2-phenoxy ethyl acrylate)、乙氧化2-苯氧基乙基丙烯酸酯(ethoxylated 2-phenoxy ethyl acrylate)、2-(2-乙氧基乙氧基)乙基丙烯酸酯(2-(2-ethoxyethoxy)ethyl acrylate)、環三羥甲基丙烷甲縮醛丙烯酸酯(cyclic trimethylolpropane formal acrylate)、β-羧乙基丙烯酸酯(β-carboxyethyl acrylate)、月桂酸(甲基)丙烯酸酯(lauryl(metha)crylate)、異辛基丙烯酸酯(isooctyl acrylate)、硬脂酸(甲基)丙烯酸酯(stearyl(meth)acrylate)、異癸基丙烯酸酯(isodecyl acrylate)、異冰片基(甲基)丙烯酸酯(isoborny(meth)acrylate)、苄基丙烯酸酯(benzyl acrylate)、2-羥基乙基甲基丙烯酸酯磷酸酯(2-hydroxyethyl metharcrylate phosphate)、丙烯酸羥乙酯(hydroxyethyl acrylate)、甲基丙烯酸-2-羥基乙酯(2-hydroxyethyl methacrylate)及其混合物所組成之群組。 The monofunctional (meth) acrylate monomer suitable for use in the present invention may be selected from, but not limited to, methyl methacrylate, butyl methacrylate, 2-phenoxyethyl acrylate. (2-phenoxy ethyl acrylate), ethoxylated 2-phenoxy ethyl acrylate, 2-(2-ethoxyethoxy)ethyl acrylate (2-(2- Ethoxyethoxy)ethyl acrylate), cyclic trimethylolpropane formal acrylate, β-carboxyethyl acrylate, lauric acid (meth) acrylate (lauryl (metha) Crylate), isooctyl acrylate, stearyl (meth) acrylate, isodecyl acrylate, isobornyl (meth) acrylate (isoborny(meth)acrylate), benzyl acrylate, 2-hydroxyethyl metharcrylate phosphate, hydroxyethyl acrylate, methacrylic acid-2 -hydroxyethyl methacrylate and its a group of mixtures.
適用於本發明之多官能基之(甲基)丙烯酸酯類單體可選自,但不限於,由3-羥-2,2-二甲基丙酸3-羥-2,2-二甲基丙酯二丙烯酸酯(hydroxypivalyl hydroxypivalate diacrylate)、乙氧化1,6-己二醇二丙烯酸酯(ethoxylated 1,6-hexanediol diacrylate)、二丙二醇二丙烯酸酯(dipropylene glycol diacrylate)、三環癸烷二甲醇二丙烯酸酯(tricyclodecane dimethanol diacrylate)、乙氧化二丙二醇二丙烯酸酯(ethoxylated dipropylene glycol diacrylate)、新戊二醇二丙烯酸酯 (neopentyl glycol diacrylate)、丙氧化新戊二醇二丙烯酸酯(propoxylated neopentyl glycol diacrylate)、乙氧化雙酚A二甲基丙烯酸酯(ethoxylated bisphenol-A dimethacrylate)、2-甲基-1,3-丙二醇二丙烯酸酯(2-methyl-1,3-propanediol diacrylate)、乙氧化-2-甲基-1,3-丙二醇二丙烯酸酯(ethoxylated 2-methyl-1,3-propanediol diacrylate)、2-丁基-2-乙基-1,3-丙二醇二丙烯酸酯(2-butyl-2-ethyl-1,3-propanediol diacrylate)、乙二醇二甲基丙烯酸酯(ethylene glycol dimethacrylate)、二乙二醇二甲基丙烯酸酯(diethylene glycol dimethacrylate)、三(2-羥乙基)異氰脲酸三丙烯酸酯(tris(2-hydroxy ethyl)isocyanurate triacrylate)、季戊四醇三丙烯酸酯(pentaerythritol triacrylate)、乙氧化三羥甲基丙烷三丙烯酸酯(ethoxylated trimethylolpropane triacrylate)、丙氧化三羥甲基丙烷三丙烯酸酯(propoxylated trimethylolpropane triacrylate)、三羥甲基丙烷三甲基丙烯酸酯(trimethylolpropane trimethacrylate)、季戊四醇四丙烯酸酯(pentaerythritol tetraacrylate)、乙氧化季戊四醇四丙烯酸酯(ethoxylated pentaerythritol tetraacrylate)、雙-三羥甲基丙烷四丙烯酸酯(ditrimethylolpropane tetraacrylate)、丙氧化季戊四醇四丙烯酸酯(propoxylated pentaerythritol tetraacrylate)、二季戊四醇六丙烯酸酯(dipentaerythritol hexaacrylate)、三丙二醇二甲基丙烯酸酯(tripropylene glycol dimethacrylate)、1,4-丁二醇二甲基丙烯酸酯(1,4-butanediol dimethacrylate)、1,6-己二醇二甲基丙烯酸酯(1,6-hexanediol dimethacrylate)、烯丙基化二甲基丙烯酸環己酯(allylated cyclohexyl dimethacrylate)、二甲基丙烯酸異氰脲酸酯(isocyanurate dimethacrylate)、乙氧基化三羥甲基丙烷三甲基丙烯酸酯(ethoxylated trimethylolpropane trimethacrylate)、丙氧基化甘油三甲基丙烯酸酯(propoxylated glycerol trimethacrylate)、三(丙烯氧乙基)異氰脲酸酯 (tris(acryloxyethyl)isocyanurate)、三羥甲基丙烷三丙烯酸酯(trimethylolpropane triacrylate)及其混合物所組成之群組。 The polyfunctional (meth) acrylate monomer suitable for use in the present invention may be selected from, but not limited to, 3-hydroxy-2,2-dimethylpropionic acid 3-hydroxy-2,2-dimethyl Hydroxyvalyl hydroxypivalate diacrylate, ethoxylated 1,6-hexanediol diacrylate, dipropylene glycol diacrylate, tricyclodecane Tricyclodecane dimethanol diacrylate, ethoxylated dipropylene glycol diacrylate, neopentyl glycol diacrylate (neopentyl glycol diacrylate), propoxylated neopentyl glycol diacrylate, ethoxylated bisphenol-A dimethacrylate, 2-methyl-1,3-propanediol 2-methyl-1,3-propanediol diacrylate, ethoxylated 2-methyl-1,3-propanediol diacrylate, 2-butyl 2-butyl-2-ethyl-1,3-propanediol diacrylate, ethylene glycol dimethacrylate, diethylene glycol II Diethylene glycol dimethacrylate, tris(2-hydroxyethyl)isocyanurate triacrylate, pentaerythritol triacrylate, ethoxylated trishydroxylate Ethoxylated trimethylolpropane triacrylate, propoxylated trimethylolpropane triacrylate, trimethylolpropane trimethacryla Te), pentaerythritol tetraacrylate, ethoxylated pentaerythritol tetraacrylate, ditrimethylolpropane tetraacrylate, propoxylated pentaerythritol tetraacrylate Dipentaerythritol hexaacrylate, tripropylene glycol dimethacrylate, 1,4-butanediol dimethacrylate, 1,6-hexa 1,6-hexanediol dimethacrylate,allylated cyclohexyl dimethacrylate, isocyanurate dimethacrylate, ethoxylate Ethoxylated trimethylolpropane trimethacrylate, propoxylated glycerol trimethacrylate, tris(propyleneoxyethyl)isocyanurate (tris(acryloxyethyl)isocyanurate), trimethylolpropane triacrylate, and mixtures thereof.
較佳地,可用於本發明中之單官能基或多官能基單體為2-苯氧基乙基丙烯酸酯、月桂酸(甲基)丙烯酸酯、異癸基丙烯酸酯、異冰片基(甲基)丙烯酸酯、乙氧基乙氧基乙基丙烯酸酯、三羥甲基丙烷三甲基丙烯酸酯、季戊四醇四丙烯酸酯、乙氧化三羥甲基丙烷三甲基丙烯酸酯、丙氧化甘油三甲基丙烯酸酯或三羥甲基丙烷三丙烯酸酯。 Preferably, the monofunctional or polyfunctional monomer usable in the present invention is 2-phenoxyethyl acrylate, lauric acid (meth) acrylate, isodecyl acrylate, isobornyl (A) Acrylate, ethoxyethoxyethyl acrylate, trimethylolpropane trimethacrylate, pentaerythritol tetraacrylate, ethoxylated trimethylolpropane trimethacrylate, glycerol triglyceride A acrylate or trimethylolpropane triacrylate.
可用於本發明之市售單官能基或多官能基單體包括:由長興公司生產,商品名為EM210、EM211、EM214、EM223、EM328、EM2308、EM231、EM219、EM90、EM70、EM235、EM2381、EM2382、EM2383、EM2384、EM2385、EM2386、EM2387、EM331、EM3380、EM241、EM2411、EM242、EM2421或EM265;由Sartomer公司生產,商品名為SR506、SR242、SR949、SR444、CD501、SR454、SR454HP、SR492、SR9008、SR9035或CD9051等。 Commercially available monofunctional or polyfunctional monomers useful in the present invention include: manufactured by Changxing Corporation under the trade names EM210, EM211, EM214, EM223, EM328, EM2308, EM231, EM219, EM90, EM70, EM235, EM2381. EM2382, EM2383, EM2384, EM2385, EM2386, EM2387, EM331, EM3380, EM241, EM2411, EM242, EM2421 or EM265; manufactured by Sartomer, under the trade names SR506, SR242, SR949, SR444, CD501, SR454, SR454HP, SR492, SR9008, SR9035 or CD9051.
根據本發明,(甲基)丙烯酸酯單體的種類與用量一般視所使用的丙烯酸酯官能基之寡聚物的種類、添加量與所得組合物的用途而調整。舉例言之,本發明組合物可視需要添加單官能基之(甲基)丙烯酸酯單體,其具有稀釋劑之功用,以調整所得組合物的黏度,並提高其塗佈施用的操作性;本發明組合物亦可視需要添加多官能基之(甲基)丙烯酸酯單體,由於該單體包含多個可進行反應的官能基,因此有利於後續固化反應的進行。本發明所屬技術領域具有通常知識者,依據本案說明書之揭露與其相關知識,可視需要調整(甲基)丙烯酸酯單體與丙烯酸酯官能基之寡聚物的種類與添加量,以製得具有所需性質的組合物。在本發明中,(甲基)丙烯酸酯單體之含量以組合物總重量計為約9重量%至約40重量%,較佳為約9重量%至35重量%,更佳為約15量%至30重量%。上述單體的含量可以包含其範圍內任意數值的較 小範圍,如約12重量%至約32重量%,或約18重量%至約28重量%。 According to the present invention, the kind and amount of the (meth) acrylate monomer are generally adjusted depending on the kind and amount of the acrylate functional group-containing oligomer used and the use of the resulting composition. For example, the composition of the present invention may optionally add a monofunctional (meth) acrylate monomer, which has the function of a diluent to adjust the viscosity of the resulting composition and improve the operability of coating application; The composition of the invention may also be added with a polyfunctional (meth) acrylate monomer as needed, since the monomer contains a plurality of reactive functional groups, thereby facilitating the subsequent curing reaction. The present invention has a general knowledge in the art, according to the disclosure of the present specification and related knowledge, the type and amount of the oligomer of the (meth) acrylate monomer and the acrylate functional group can be adjusted as needed to obtain the A composition of the desired nature. In the present invention, the (meth) acrylate monomer is present in an amount of from about 9% by weight to about 40% by weight, based on the total weight of the composition, preferably from about 9% by weight to about 35% by weight, more preferably about 15% by weight. % to 30% by weight. The content of the above monomers may include any value within the range thereof. Small ranges, such as from about 12% to about 32% by weight, or from about 18% to about 28% by weight.
適用於本發明中之光起始劑係本發明所屬技術領域中具有通常知識者所熟知者,其例如但不限於二苯甲酮(benzophenone)、二苯乙醇酮(benzoin)、2-羥基-2-甲基-1-苯基丙-1-酮(2-hydroxy-2-methyl-1-phenyl-propan-1-one)、2,2-二甲氧基-1,2-二苯基乙-1-酮(2,2-dimethoxy-1,2-diphenylethan-1-one)、1-羥基環己基苯基酮(1-hydroxy cyclohexyl phenyl ketone)、2,4,6-三甲基苯甲醯基二苯基膦氧化物(2,4,6-trimethylbenzoyl diphenyl phosphine oxide)或彼等之混合物。較佳之光起始劑為二苯甲酮、1-羥基環己基苯基酮或2,4,6-三甲基苯甲醯基二苯基膦氧化物。在本發明中,光起始劑之含量以組合物總重量計,為約0.1重量%至約10重量%,較佳為約0.5重量%至約5重量%,更佳為約2.0重量%至約3.5重量%。上述光起始劑的含量可以包含其範圍內任意數值的較小範圍,如約0.8重量%至約8重量%,或約1.5重量%至約6重量%。 Photoinitiators suitable for use in the present invention are well known to those of ordinary skill in the art, such as, but not limited to, benzophenone, benzoin, 2-hydroxy- 2-hydroxy-2-methyl-1-phenyl-propan-1-one, 2,2-dimethoxy-1,2-diphenyl 2,2-dimethoxy-1,2-diphenylethan-1-one, 1-hydroxy cyclohexyl phenyl ketone, 2,4,6-trimethylbenzene A mixture of 2,4,6-trimethylbenzoyl diphenyl phosphine oxide or a mixture thereof. Preferred photoinitiators are benzophenone, 1-hydroxycyclohexyl phenyl ketone or 2,4,6-trimethylbenzimidyl diphenylphosphine oxide. In the present invention, the photoinitiator is present in an amount of from about 0.1% by weight to about 10% by weight, based on the total weight of the composition, preferably from about 0.5% by weight to about 5% by weight, more preferably about 2.0% by weight to About 3.5% by weight. The above photoinitiator may be included in a minor range of any value within the range, such as from about 0.8% to about 8% by weight, or from about 1.5% to about 6% by weight.
本發明所使用之光色轉換層樹脂(除螢光粉外之其他組份)具有良好的光安定性與高透光性,能搭配螢光粉使製得之光色轉換膜具有良好的顯色效果。 The light color conversion layer resin (other components except the fluorescent powder) used in the invention has good light stability and high light transmittance, and can be matched with the fluorescent powder to make the obtained light color conversion film have good display. Color effect.
本發明之組合物可視需要包含本發明所屬技術領域中具有通常知識者熟知之添加劑,其例如但不限於,硬化劑、硬化促進劑、抗氧化劑或其組合。 The compositions of the present invention may optionally include additives well known to those of ordinary skill in the art to which the present invention pertains, such as, but not limited to, hardeners, hardening accelerators, antioxidants, or combinations thereof.
本發明另提供一種光色轉換膜之製造方法,其包含將上述光色轉換層組合物施加於一基材上;及將該組合物固化以形成該光色轉換膜。在本發明之製造方法中,組合物的施加方式係本發明所屬技術領域中具有通常知識者所熟知者,其例如但不限於,模頭塗佈、線棒塗佈、噴霧塗佈(spray coating)、狹縫式塗佈法(slot die coating)、滾輪塗佈法(roller coating)、含浸塗佈法(dip coating)、旋轉塗 佈法(spin coating)、簾塗法(curtain coating)、噴墨列印(inkjet printing)、柔版印刷、製版印刷(offset printing)、網版印刷或上述之組合,較佳為使用線棒塗佈、滾輪塗佈法、噴墨列印、柔版印刷、網版印刷或上述之組合,更佳為使用線棒塗佈、滾輪塗佈法或上述方法之組合。 The present invention further provides a method of producing a light color conversion film comprising applying the light color conversion layer composition to a substrate; and curing the composition to form the light color conversion film. In the manufacturing method of the present invention, the manner in which the composition is applied is well known to those skilled in the art to which the present invention pertains, such as, but not limited to, die coating, bar coating, spray coating (spray coating). ), slot die coating, roller coating, dip coating, spin coating Spin coating, curtain coating, inkjet printing, flexographic printing, offset printing, screen printing or a combination thereof, preferably by wire bar coating The cloth, the roller coating method, the ink jet printing, the flexographic printing, the screen printing or a combination thereof is more preferably a wire bar coating, a roller coating method or a combination of the above methods.
而適用於本發明中之固化方法為輻射固化,其例如但不限於熱固化及光固化,較佳為UV光固化。本發明藉由上述方法形成之光色轉換膜的厚度為約101微米至約800微米,較佳為約150微米至約600微米。上述光色轉換膜之厚度可以包含其範圍內任意數值的較小範圍,如約120微米至約500微米,或約160微米至約750微米。 The curing method suitable for use in the present invention is radiation curing, such as, but not limited to, thermal curing and photo curing, preferably UV curing. The photochromic conversion film formed by the above method has a thickness of from about 101 μm to about 800 μm, preferably from about 150 μm to about 600 μm. The thickness of the above-described light color conversion film may include a smaller range of any value within the range, such as from about 120 microns to about 500 microns, or from about 160 microns to about 750 microns.
一般光學產品的光學特性可由霧度值(Hz)、全光線透過率(Tt)、擴散光透過率(Td)及平行光透過率(Tp)等值直接表示,其中Tt=Td+Tp,Hz=Td/Tt(%)。一般而言,全光線透過率代表光學產品的穿透率,霧度值代表光學產品的擴散性。本發明之光色轉換膜具有高穿透率及高光擴散性之光學特性。根據JIS K7136標準方法量測,本發明之光色轉換膜的全光線透過率不低於約60%,較佳為高於約80%,而霧度值為約50%至約99%,較佳為約70%至約97%,更佳為約90%至約95%。此外,根據PSTC1標準方法量測,本發明之光色轉換膜的拉力值係大於約1,000克/吋(g/inch),較佳為1,000克/吋至2,500克/吋。若拉力值小於1,000克/吋時,所製的膜無法與LED模組有效對貼,容易因密著性不佳而產生脫落的現象。若拉力值大於2,500克/吋時,所製的膜與LED模組密著性太強,有礙於日後燈泡維修更換不易的問題。 The optical properties of general optical products can be directly expressed by haze value (Hz), total light transmittance (Tt), diffused light transmittance (Td), and parallel light transmittance (Tp), where Tt = Td + Tp, Hz. =Td/Tt(%). In general, the total light transmittance represents the transmittance of the optical product, and the haze value represents the diffusivity of the optical product. The light color conversion film of the present invention has optical characteristics of high transmittance and high light diffusibility. According to the standard method of JIS K7136, the light-light conversion film of the present invention has a total light transmittance of not less than about 60%, preferably more than about 80%, and a haze value of from about 50% to about 99%. Preferably, it is from about 70% to about 97%, more preferably from about 90% to about 95%. Further, the photochromic conversion film of the present invention has a tensile value of more than about 1,000 g/g, preferably from 1,000 g/吋 to 2,500 g/吋, measured according to the PSTC1 standard method. When the tensile force value is less than 1,000 g/吋, the film produced cannot be effectively adhered to the LED module, and it is liable to fall off due to poor adhesion. If the tensile value is greater than 2,500 g / ,, the film and the LED module are too tight, which hinders the problem that the lamp is not easily repaired and replaced in the future.
此外,本發明組合物較佳具有一定的黏度值,以緩衝形成光色轉換膜且於貼合後所產生的應力問題,使膜不易產生形變也較易緊密貼合。本發明組合物之黏度值較佳為約50,000 cps至約200,000 cps, 更佳為約70,000 cps至約170,000 cps或約100,000 cps至約150,000 cps。上述組合物之黏度值可以包含其範圍內任意數值的較小範圍,如約80,000 cps至約160,000,或約90,000 cps至約120,000 cps。 In addition, the composition of the present invention preferably has a certain viscosity value to buffer the stress problem caused by the formation of the light color conversion film and after bonding, so that the film is less likely to be deformed and is more easily adhered. The viscosity of the composition of the present invention is preferably from about 50,000 cps to about 200,000 cps. More preferably, it is from about 70,000 cps to about 170,000 cps or from about 100,000 cps to about 150,000 cps. The viscosity values of the above compositions may include a smaller range of any value within the range, such as from about 80,000 cps to about 160,000, or from about 90,000 cps to about 120,000 cps.
本發明之光色轉換膜可用於光學元件中,以提供光學元件所需顏色的發射光及優良的勻光性。在本發明之一實施態樣中,光學元件包含一燈源及一基板,其中燈源發出第一光源,及基板係為導光板或透明基板。在本發明中,燈源並無特殊限制,例如但不限於UV燈源、可見光燈源、紅外光燈源或紫外光燈源,較佳為可見光燈源,如可見光LED或OLED燈源,其例如但不限於藍光LED晶片、紫外光LED晶片、可發出白、藍、綠、紅、黃或紫光之OLED晶片或紫外光OLED晶片;導光板並無特殊限制,例如但不限於正面入光反射式導光板或側邊入光反射式導光板;且透明基板亦無特殊限制,例如但不限於PMMA、PC或PET。 The light color conversion film of the present invention can be used in an optical element to provide emitted light of a desired color of the optical element and excellent light homogenization. In an embodiment of the invention, the optical component comprises a light source and a substrate, wherein the light source emits a first light source, and the substrate is a light guide plate or a transparent substrate. In the present invention, the light source is not particularly limited, such as but not limited to a UV light source, a visible light source, an infrared light source or an ultraviolet light source, preferably a visible light source such as a visible light LED or an OLED light source. For example, but not limited to, a blue LED chip, an ultraviolet LED chip, an OLED wafer or an ultraviolet OLED wafer capable of emitting white, blue, green, red, yellow or violet light; the light guide plate is not particularly limited, such as but not limited to frontal light reflection The light guide plate or the side light-introducing light guide plate; and the transparent substrate is also not particularly limited, such as but not limited to PMMA, PC or PET.
在本發明中,無論是包含燈源或包含LED/OLED模組之光學元件,光色轉換膜中之螢光粉會吸收第一光源,並將第一光源轉換成第二光源。在本發明中,光學元件之第一光源較佳與第二光源混光以產生白光光源。 In the present invention, whether it comprises a light source or an optical component comprising an LED/OLED module, the phosphor in the light color conversion film absorbs the first light source and converts the first light source into a second light source. In the present invention, the first source of the optical element is preferably mixed with the second source to produce a white light source.
在本發明之一實施態樣中,光色轉換膜可作為液晶顯示器之彩色濾光片,配合白光或非白光之背光源以形成RGB(紅綠藍)或RGBW(紅綠藍白)光源輸出。以包含白光背光源之液晶顯示器為例,可使用具有RGB三色之光色轉換膜作為彩色濾光片,以輸出RGB三種顏色。本發明之光色轉換膜亦可用於液晶顯示器之背光模組中作為擴散膜,以提供背光源輸出經勻化之光源。此外,以藍光LED背光源為例,搭配含黃色螢光粉之光色轉換膜,即可穩定地輸出白光之面光源,以提供色彩轉換的功能;而此面光源可再使用RGBT(紅綠藍透明)四色之光色轉換膜作為彩色濾光片,以輸出RGBW四種顏色。 In an embodiment of the present invention, the light color conversion film can be used as a color filter of a liquid crystal display, and is matched with a white light or a non-white light backlight to form an RGB (red, green, blue) or RGBW (red, green, blue and white) light source output. . Taking a liquid crystal display including a white light backlight as an example, a light color conversion film having three colors of RGB can be used as a color filter to output three colors of RGB. The light color conversion film of the present invention can also be used as a diffusion film in a backlight module of a liquid crystal display to provide a light source for the backlight output to be homogenized. In addition, taking a blue LED backlight as an example, a light-color conversion film containing yellow phosphor powder can stably output a white light source to provide color conversion function; and this surface light source can reuse RGBT (red and green) Blue transparent) Four-color light color conversion film is used as a color filter to output four colors of RGBW.
在本發明之較佳實施態樣中,本發明所屬技術領域中具有通常知識者係視需要選擇可分別將特定顏色之背光源轉換為紅光、綠光及藍光之螢光粉,將包含不同螢光粉之組合物分別噴墨列印在透明基板的紅色畫素區域R、綠色畫素區域G及藍色畫素區域B上,然後將組合物經輻射固化以形成光色轉換膜。接著,將紫外光LED設置於透明基板下方作為背光源,藉由透明基板上的光色轉換膜將LED發出的紫外光分別轉成紅光、綠光及藍光,使得本發明之光色轉換膜可作為液晶顯示器之彩色濾光片。 In a preferred embodiment of the present invention, those having ordinary knowledge in the art to which the present invention pertains are required to separately convert a backlight of a specific color into a phosphor of red, green, and blue light, which will contain different The composition of the phosphor powder is ink-jet printed on the red pixel region R, the green pixel region G, and the blue pixel region B of the transparent substrate, respectively, and then the composition is radiation-cured to form a light-color conversion film. Then, the ultraviolet light LED is disposed under the transparent substrate as a backlight, and the ultraviolet light emitted by the LED is converted into red light, green light and blue light by the light color conversion film on the transparent substrate, respectively, so that the light color conversion film of the invention Can be used as a color filter for liquid crystal displays.
本發明之光學元件係用於照明。以包含LED模組之光學元件為例,選用藍光LED模組搭配含黃色螢光粉之光色轉換膜,即可穩定地輸出白光之面光源。相較於先前技術,使用該光學元件用於照明,能提供具有穩定輸出與均勻化之面光源,且能避免個別燈泡元件失效或故障時,視覺上不均一(即看得到明顯暗點的缺陷)之缺點。另外,相較於習知LED/OLED封裝材料,使用本發明之光色轉換膜可克服習知材料需要個別封裝而產生整體光源性不均等問題。舉例言之,當觀察一藍光LED模組中之燈泡具有非連續缺陷時,若其LED模組外以本發明之光色轉換膜包覆後再觀察,發現該LED模組相較於無缺陷的LED模組並沒有明顯的暗點。此觀察距離至少為約3公尺以上所產生的視覺效果,較佳為約5公尺以上,更佳為約5公尺至約20公尺。而為達上述功效,本發明光色轉換層之厚度為約100微米至約300微米,較佳為約100微米至約200微米。上述光色轉換層之厚度可以包含其範圍內任意數值的較小範圍,如約120微米至約250微米,或約150微米至約220微米。 The optical component of the invention is used for illumination. Taking an optical component including an LED module as an example, a blue LED module is used together with a light color conversion film containing yellow fluorescent powder to stably output a white light source. Compared with the prior art, the use of the optical component for illumination can provide a surface light source with stable output and uniformity, and can avoid visually inhomogeneous (ie, see a clear dark spot defect) when individual bulb components fail or fail. The shortcomings. In addition, the use of the light-color conversion film of the present invention overcomes the problem that conventional materials require individual packaging to cause overall light source inhomogeneity compared to conventional LED/OLED packaging materials. For example, when observing a light bulb in a blue LED module has a discontinuous defect, if the LED module is coated with the light color conversion film of the present invention and then observed, the LED module is found to be relatively free of defects. The LED module has no obvious dark spots. The viewing distance is at least about 3 meters or more, preferably about 5 meters or more, more preferably about 5 meters to about 20 meters. To achieve the above effects, the thickness of the photochromic conversion layer of the present invention is from about 100 microns to about 300 microns, preferably from about 100 microns to about 200 microns. The thickness of the above-described light color conversion layer may comprise a smaller range of any value within its range, such as from about 120 microns to about 250 microns, or from about 150 microns to about 220 microns.
本發明之光色轉換膜的製程簡單,可搭配現有較便宜的光源模組降低成本,有利於工業化量產。此外,本發明之光色轉換膜可使用可撓式基材形成可撓式光色轉換膜,其適用於非平面形光源模組,如 球形LED/OLED模組或波浪形LED/OLED模組,以用於非平面形照明。再者,本發明之光色轉換層組合物因含有可光固化組份,可提供較佳之基材適用性,避免習知LED模組之光色轉換膜/板,因應力而產生翹曲等不良視覺效果。且據本發明較佳實施態樣之一發現,本發明之光色轉換層組合物具有優異的耐高溫高濕的特性,於高溫高溼測定前後仍保有其光學性能(穿透度大於80%,霧度差值(△Hz)小於1),特別適用於戶外照明或特殊照明環境下的需求。 The light color conversion film of the invention has simple process and can reduce the cost with the existing cheap light source module, and is beneficial to industrial mass production. In addition, the light color conversion film of the present invention can form a flexible light color conversion film using a flexible substrate, which is suitable for a non-planar light source module, such as Spherical LED/OLED modules or wavy LED/OLED modules for non-planar illumination. Furthermore, the photochromic conversion layer composition of the present invention can provide better substrate suitability by containing a photocurable component, avoiding the light color conversion film/plate of the conventional LED module, and causing warpage due to stress, etc. Bad visual effects. According to one of the preferred embodiments of the present invention, the light color conversion layer composition of the present invention has excellent high temperature and high humidity resistance, and retains its optical properties before and after high temperature and high humidity measurement (penetration degree is greater than 80%). The haze difference (ΔHz) is less than 1), which is especially suitable for outdoor lighting or special lighting environments.
以下實施例係用於對本發明作進一步說明,唯非用以限制本發明之範圍。任何熟悉此項技藝之人士可輕易達成之修飾及改變均包括於本案說明書揭示內容及所附申請專利範圍之範圍內。 The following examples are intended to illustrate the invention and are not intended to limit the scope of the invention. Modifications and variations that may be readily made by those skilled in the art are included within the scope of the disclosure of the present disclosure and the scope of the appended claims.
根據以下描述之方式製備例1至6之光色轉換層組合物,其組成如表1所列。 The color conversion layer compositions of Examples 1 to 6 were prepared in the manner described below, and their compositions are as listed in Table 1.
首先,將各組分以表1所列之重量(公克)混合,於室溫及暗室中,進行攪拌至完全混合均勻,以形成光色轉換層組合物。然後,於固化能量1500毫焦耳/平方公分(mJ/cm2)的條件下,於500微米的玻璃基材(穿透度為91.4%)上形成100微米厚的光色轉換層。 First, the components were mixed in the weights (in grams) listed in Table 1, and stirred at room temperature and in a dark room until completely mixed uniformly to form a color conversion layer composition. Then, a 100 μm thick light-color conversion layer was formed on a 500 μm glass substrate (penetration: 91.4%) under conditions of a curing energy of 1500 mJ/cm 2 (mJ/cm 2 ).
(a)寡聚物與單官能單體混合物:Sartomer公司所生產之CN966J75,其包含75重量%聚胺基甲酸酯(甲基)丙烯酸酯與25重量%單官能單體SR506:異冰片基丙烯酸酯。 (a) Mixture of oligomer and monofunctional monomer: CN966J75 manufactured by Sartomer Company, which comprises 75% by weight of polyurethane (meth) acrylate and 25% by weight of monofunctional monomer SR506: isobornyl Acrylate.
(b)單官能單體:長興公司所生產之EM219:異癸基丙烯酸酯。 (b) Monofunctional monomer: EM219: isodecyl acrylate produced by Changxing Company.
(c)單官能單體:長興公司所生產之EM211:2-(2-乙氧基乙氧基)乙基丙烯酸酯。 (c) Monofunctional monomer: EM211: 2-(2-ethoxyethoxy)ethyl acrylate produced by Changxing Company.
(d)光起始劑:1-羥基環己基苯基酮(BASF公司所生產,Irgacure 184)。 (d) Photoinitiator: 1-hydroxycyclohexyl phenyl ketone (manufactured by BASF Corporation, Irgacure 184).
上述組分(a)至(d)之純度均大於99%。 The above components (a) to (d) each have a purity of more than 99%.
霧度:使用NDH 5000W霧度計(Nippon Denshoku公司)量測固化前後之光色轉換層組合物與光色轉換膜的霧度值,並計算其差值(△Hz)。 Haze: The haze value of the light-color conversion layer composition and the light-color conversion film before and after curing was measured using an NDH 5000W haze meter (Nippon Denshoku Co., Ltd.), and the difference (ΔHz) was calculated.
穿透度:使用NDH 5000W霧度計量測固化前後之光色轉換層組合物與光色轉換轉換膜的穿透度(分別為TTa及TTb)。 Penetration: The NDH 5000W haze was used to measure the transmittance of the color-converting layer composition and the color-to-light conversion conversion film before and after curing (TT a and TT b , respectively ).
色度:利用色度計(Color Quest XE[Hunter Lab公司]),依據CIE 1976制定之標準與ASTM E313方法量測待測樣品之b*值,並計算其差值(△b*)。 Chromaticity: The b* value of the sample to be tested was measured by a colorimeter (Color Quest XE [Hunter Lab]) according to the standard established by CIE 1976 and the ASTM E313 method, and the difference (Δb*) was calculated.
上述所得之測試結果紀錄於表2中。 The test results obtained above are recorded in Table 2.
由表1與表2可知,本發明之光色轉換膜組合物之前驅物(製備例1至6)於固化前後的穿透度皆大於90%,霧度差值(△Hz)皆小於0.10,且色度差值(△b*)皆小於0.30。因此,本發明組合物之膠材(除螢光粉外之組份)本身不易質變於固化前後具有一致的光學性質性,即高透光性(穿透度皆大於90%)與低黃變性(△b*小於0.30),亦具有良好的顯色效果。 It can be seen from Table 1 and Table 2 that the precursors of the light-color conversion film composition of the present invention (Preparation Examples 1 to 6) have a transmittance of more than 90% before and after curing, and the haze difference (ΔHz) is less than 0.10. And the chromaticity difference (Δb*) is less than 0.30. Therefore, the rubber material of the composition of the present invention (component other than the fluorescent powder) itself is not easily changed to have uniform optical properties before and after curing, that is, high light transmittance (all transmittance is greater than 90%) and low yellowing property. (△b* is less than 0.30), also has a good color development effect.
同製備例1至6並根據以下描述之方式,將各組分以表3所列之重量(公克)混合,其中進一步添加組分(e),以形成光色轉換層組合物之膠液。然後,於固化能量1500毫焦耳/平方公分(mJ/cm2)的條件下,於500微米的玻璃基材(穿透度為91.4%)上形成100微米厚的光色轉換層。 In the same manner as described in the following Preparations 1 to 6 and in the following description, the components were mixed in the weight (in grams) listed in Table 3, and component (e) was further added to form a glue of the color conversion layer composition. Then, a 100 μm thick light-color conversion layer was formed on a 500 μm glass substrate (penetration: 91.4%) under conditions of a curing energy of 1500 mJ/cm 2 (mJ/cm 2 ).
上述(a)至(d)同表1所示,及(e)為黃色螢光粉(雄鼎科技所生產之HSD-86450)。 The above (a) to (d) are the same as those shown in Table 1, and (e) are yellow phosphor powder (HSD-86450 produced by Xiongding Technology).
拉力測試:成膜方式為將各製備例及比較例的膠液均勻攪拌,將黃色螢光粉充分分散後,以線棒塗佈在50微米的PET膜上,經UV光於固化能量1,500毫焦耳/平方公分(mJ/cm2)的條件下,固化後形成 100微米厚度之塗膜,接著和25微米之PET對貼,以PSTC1標準方法由拉力儀(Chem Instuments所生產之Model number:AR-1000)進行拉力測試以得拉力值F(克/吋)。 Tensile test: The film formation method is to uniformly stir the glue of each preparation example and the comparative example, and the yellow phosphor powder is sufficiently dispersed, and then coated on a 50 micrometer PET film with a wire rod, and the curing energy is 1,500 millimeters by UV light. In the case of Joules per square centimeter (mJ/cm 2 ), a 100 μm thick coating film is formed after curing, and then adhered to 25 μm PET, and the Model number: AR produced by Chem Instuments is used in the PSTC1 standard method. -1000) Perform a tensile test to obtain a tensile value F (g/吋).
上述所得之測試結果紀錄於表4。 The test results obtained above are recorded in Table 4.
由表3與表4可知,本發明之光色轉換膜組合物(實施例1至6)於固化後之拉力值均大於1000克/吋,而比較例1之拉力值僅為500克/吋。 As can be seen from Tables 3 and 4, the light color conversion film compositions of the present invention (Examples 1 to 6) have tensile force values after curing of more than 1000 g/吋, and the tensile value of Comparative Example 1 was only 500 g/吋. .
在固化能量1500毫焦耳/平方公分的條件下,將實施例1、6與製備例1之膠液各於500微米的玻璃基材(穿透度91.4%)上形成100微米厚的膜。將該膜於高溫高濕條件(60℃,90%RH,300小時)下進行以下測定。 The glues of Examples 1, 6 and Preparation 1 were each formed on a 500 μm glass substrate (penetration 91.4%) under a curing energy of 1500 mJ/cm 2 to form a 100 μm thick film. The film was subjected to the following measurement under high temperature and high humidity conditions (60 ° C, 90% RH, 300 hours).
霧度:使用NDH 5000W霧度計(Nippon Denshoku公司)量測高溫高濕測試前後之光色轉換膜的霧度值(Hz)。 Haze: The haze value (Hz) of the color conversion film before and after the high temperature and high humidity test was measured using an NDH 5000W haze meter (Nippon Denshoku Co., Ltd.).
穿透度:使用NDH 5000W霧度計(Nippon Denshoku公司)量測高溫高濕測試前後之光色轉換膜的穿透度(TT)。 Penetration: The transmittance (TT) of the light-color conversion film before and after the high-temperature and high-humidity test was measured using an NDH 5000W haze meter (Nippon Denshoku Co., Ltd.).
色度:利用色度計(Color Quest XE[Hunter Lab公司]),依據CIE 1976制定之標準與ASTM E313方法,量測待測樣品高溫高濕測試前後的b*值。 Chromaticity: The b* value of the sample to be tested before and after the high temperature and high humidity test was measured by a colorimeter (Color Quest XE [Hunter Lab]) according to the standard established by CIE 1976 and the ASTM E313 method.
上述所得之測試結果紀錄於表5中。 The test results obtained above are recorded in Table 5.
根據表5的測定結果可知,本發明製備例1之光色轉換膜前驅物之塗膜於高溫高溼測試前後的穿透度均大於90%,霧度差值(△Hz)小於0.1,且色度差值(△b*)小於0.30。因此,本發明組合物之膠材(除螢光粉外之組份)本身不易質變具有較佳的儲存安定性與耐候性。 According to the measurement results of Table 5, the coating film of the precursor of the color conversion film of the preparation example 1 of the present invention has a transmittance of more than 90% before and after the high temperature and high humidity test, and the haze difference (ΔHz) is less than 0.1, and The chromaticity difference (Δb*) is less than 0.30. Therefore, the rubber material of the composition of the present invention (component other than the fluorescent powder) itself is not susceptible to qualitative change and has good storage stability and weather resistance.
而本發明實施例1、6之光色轉換膜於高溫高溼測試前後的穿透度均大於80%,霧度差值(△Hz)均小於1。因此,本發明組合物具有耐高溫高濕的特性與高霧度(大於90%)等良好的光學性質。 However, the transmittances of the light-color conversion films of Examples 1 and 6 of the present invention before and after the high-temperature and high-humidity test are all greater than 80%, and the haze difference (ΔHz) is less than 1. Therefore, the composition of the present invention has excellent optical properties such as high temperature and high humidity resistance and high haze (greater than 90%).
本發明之光色轉換膜組合物不需使用光擴散粒子即可製得具有高霧度等良好的光擴散性質之光色轉換層,且在形成光色轉換膜過程中不需使用溶劑,僅需以輻射固化即可快速有效的將該組合物成膜,若搭配LED之照明設備使用兼具環保及節能特性。此外,本發明之光 色轉換膜可經調整為具有一定的黏度,特別適用於LED或OLED上作為光色轉換之用。 The light color conversion film composition of the present invention can produce a light color conversion layer having good light diffusion properties such as high haze without using light diffusion particles, and does not require a solvent in forming the light color conversion film, only The composition needs to be formed into a film quickly and effectively by radiation curing, and the use of LED lighting equipment is both environmentally friendly and energy-saving. Further, the light of the present invention The color conversion film can be adjusted to have a certain viscosity, and is particularly suitable for use as an optical color conversion on an LED or an OLED.
11‧‧‧光色轉換層樹脂 11‧‧‧Light color conversion layer resin
12‧‧‧光色轉換層粒子 12‧‧‧Light color conversion layer particles
13‧‧‧基材 13‧‧‧Substrate
14‧‧‧光色轉換層 14‧‧‧Light color conversion layer
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