WO2014010845A1 - 가시광 투과성이 우수한 광열변환 필름 및 이를 이용한 oled용 전사 필름 - Google Patents
가시광 투과성이 우수한 광열변환 필름 및 이를 이용한 oled용 전사 필름 Download PDFInfo
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- WO2014010845A1 WO2014010845A1 PCT/KR2013/005601 KR2013005601W WO2014010845A1 WO 2014010845 A1 WO2014010845 A1 WO 2014010845A1 KR 2013005601 W KR2013005601 W KR 2013005601W WO 2014010845 A1 WO2014010845 A1 WO 2014010845A1
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- photothermal conversion
- film
- tungsten oxide
- oled
- conversion layer
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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
- H10K50/87—Arrangements for heating or cooling
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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
- H10K71/80—Manufacture or treatment specially adapted for the organic devices covered by this subclass using temporary substrates
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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
- H10K71/10—Deposition of organic active material
- H10K71/18—Deposition of organic active material using non-liquid printing techniques, e.g. thermal transfer printing from a donor sheet
-
- 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
- B32B18/00—Layered products essentially comprising ceramics, e.g. refractory products
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G41/00—Compounds of tungsten
- C01G41/006—Compounds containing, besides tungsten, two or more other elements, with the exception of oxygen or hydrogen
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G41/00—Compounds of tungsten
- C01G41/02—Oxides; Hydroxides
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/22—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers
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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
- H10K50/84—Passivation; Containers; Encapsulations
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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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
- H10K77/10—Substrates, e.g. flexible substrates
-
- 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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/331—Nanoparticles used in non-emissive layers, e.g. in packaging layer
-
- 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
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
- Y10T428/264—Up to 3 mils
- Y10T428/265—1 mil or less
Definitions
- the present invention relates to a transfer film for an OLED (Organic Light Emitting Diode), more specifically, excellent in the visible light transmittance, can facilitate the alignment of the transfer film and the substrate can be improved OLED transfer film for OLED productivity It is about.
- OLED Organic Light Emitting Diode
- OLED Organic Light Emitting Diode
- LCD Liquid Crystal Display
- OLEDs include organic light emitting materials.
- a deposition method was mainly used.
- the homogenization of the organic light emitting material layer formed is difficult.
- the organic light emitting material layer is formed through a process in which the material included in the photothermal conversion layer absorbs light and emits heat.
- substrate is used.
- the organic light emitting material layer can be homogenized more easily than the deposition method.
- carbon black is normally used for the light absorbing material used for the photothermal conversion layer of a transfer film.
- it is difficult to secure the transparency of the film because it is difficult to transmit visible light, and thus there is a problem that the alignment of the transfer film and the substrate is difficult.
- Background art related to the present invention is a light-to-heat conversion sheet disclosed in the Republic of Korea Patent Publication No. 10-2011-0069708 (published on June 23, 2011), an organic electroluminescent material sheet using the same, and a method of manufacturing an organic electroluminescent device .
- An object of the present invention is to provide a photothermal conversion film excellent in visible light transmittance.
- Another object of the present invention is to provide a transfer film for an OLED having excellent visible light transmittance and easy alignment with a substrate to be a transfer target of an organic light emitting material.
- Photothermal conversion film for achieving the above object is a base film; And a photothermal conversion layer formed on the base film, wherein the photothermal conversion layer includes a tungsten oxide-based material, and has a visible light transmittance of 20% or more.
- the tungsten oxide-based material may include tungsten oxide powder.
- the tungsten oxide-based material may include an alkali metal-containing tungsten oxide powder.
- the alkali metal may include one or more of potassium (K), rubidium (Rb), and cesium (Cs).
- the photothermal conversion layer preferably contains 10 to 50 parts by weight of the binder and 0.1 to 5 parts by weight of the photoinitiator based on 100 parts by weight of the tungsten oxide-based material.
- the thickness of the photothermal conversion layer is preferably 1 ⁇ 5 ⁇ m.
- a protective layer may be further formed on the photothermal conversion layer.
- the thickness of the said protective layer is 0.1-1.5 micrometers.
- Transfer film for an OLED according to an embodiment of the present invention for achieving the above another object is a base film; A photothermal conversion layer formed on the base film; And an organic light emitting material layer formed on the photothermal conversion layer, wherein the photothermal conversion layer includes a tungsten oxide-based material, and has a visible light transmittance of 20% or more.
- the photothermal conversion film according to the present invention may exhibit 20% or more visible light transmittance in addition to a high photothermal conversion effect by including a tungsten oxide-based material.
- the OLED transfer film using the light-to-heat conversion film according to the present invention due to the excellent visible light transmittance as described above, it is easier to align with the substrate to be transferred to the organic light-emitting material compared to the OLED transfer film using the conventional carbon black. There is one advantage.
- FIG. 1 is a schematic cross-sectional view of a photothermal conversion film according to an embodiment of the present invention.
- Figure 2 shows a schematic cross section of the photothermal conversion film according to another embodiment of the present invention.
- Figure 3 shows a schematic cross section of the transfer film for OLED according to an embodiment of the present invention.
- Figure 4 shows a schematic cross-section of the transfer film for OLED according to another embodiment of the present invention.
- FIG. 1 is a schematic cross-sectional view of a photothermal conversion film according to an embodiment of the present invention.
- the photothermal conversion film includes a base film 110 and a photothermal conversion layer 120.
- the base film 110 may be formed of various materials such as polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), poly (methyl methacrylate) (PMMA), polyvinyl chloride (PVC), polycarbonate (PC), and polystyrene (PS).
- Polymer films can be used. It is preferable that especially the base film 110 uses a PET film. In the case of PET film, the light transmittance is high during light irradiation for light-to-heat conversion, and thus the shape of the PET film can be easily maintained through deformation prevention.
- the photothermal conversion layer 120 is formed on the base film 110.
- the photothermal conversion layer 120 absorbs light and emits it as heat. As heat is released, the photothermal conversion layer 120 expands in the thickness direction of the film.
- the adhesive force between the photothermal conversion layer and the organic light emitting material layer is weakened by the expansion of the photothermal conversion layer during the photothermal conversion, and thus is transferred to a transfer object such as a substrate. Will be made.
- a material for photothermal conversion includes a tungsten oxide-based material.
- Tungsten oxide-based material is excellent in the absorption of infrared rays, it is excellent in the photothermal conversion effect during laser irradiation.
- the material used for the conventional photothermal conversion layer was carbon black.
- Carbon black is excellent in the ability to absorb laser light and release it as heat, and has been widely used for transfer using photothermal conversion.
- the photothermal conversion film to which carbon black is applied has little transparency. In such a relationship, there is a problem in that alignment with a transfer object is not easy in the transfer through photothermal conversion.
- a small amount of carbon black is contained, a certain degree of light transmittance can be obtained, but in this case, the photothermal conversion effect is insufficient.
- dyes may be used.
- the visible light transmittance is excellent, but there is a problem in that light can be absorbed only at a specific wavelength.
- the present invention as a result of using the tungsten oxide-based material, it was possible to obtain a photothermal conversion effect of carbon black or more, and in particular, the visible light transmittance was very excellent (20% or more), which solved the conventional alignment problem in the transfer process.
- Such tungsten oxide based materials may comprise tungsten oxide powders such as WO 2.72 and the like.
- the tungsten oxide based material may comprise hydrogen or metal containing tungsten oxide (M x WO 3 , M is hydrogen or metal, 0.1 ⁇ x ⁇ 1) powder.
- metals are Li, Na, K, Rb, Cs, Ca, Ba, Sr, Fe, Sn, Mo, Nb, Ta, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Al, Ga, In And Tl may be selected from one or more.
- Examples of the metal-containing tungsten oxide may include K 0.33 WO 3 , Rb .33 WO 3 , Cs 0.33 WO 3 , and the like, and Cs 0.33 WO 3 containing cesium (Cs) may be used in terms of photothermal conversion efficiency and light transmittance. More preferred.
- the photothermal conversion layer including the tungsten oxide-based material may be formed by applying and drying a composition including a tungsten oxide-based material, a binder, a photoinitiator, and a solvent. Among them, since the solvent is removed, it can be seen that the photothermal conversion layer includes a tungsten oxide-based material, a binder, and a photoinitiator.
- the binder is photopolymerizable, such as acrylate, urethane acrylate, epoxy acrylate, and the like, any known one can be used without limitation.
- the binder is more preferably contained in an amount of 10 to 50 parts by weight based on 100 parts by weight of the tungsten oxide-based material. If the binder content is less than 10 parts by weight, the addition effect may be insufficient. On the contrary, when the binder content exceeds 50 parts by weight, the photothermal conversion efficiency may be somewhat lowered.
- Photoinitiators can be used without limitation, such as Irgacure 651.
- the photoinitiator is more preferably contained in 0.1 to 5 parts by weight of the photoinitiator based on 100 parts by weight of the tungsten oxide-based material.
- the photopolymerization of the binder may be delayed.
- the addition amount of photoinitiator exceeds 5 weight part, liquid stability may fall.
- solvent known organic solvents may be used alone or in combination, and may be used so that the viscosity of the composition is about 10 to 100 cps so as to facilitate application, but is not limited thereto.
- the thickness of a photothermal conversion layer is 1-5 micrometers.
- the photothermal conversion layer may not expand to a sufficient thickness necessary for transferring in the film thickness direction during light irradiation.
- the thickness of the photothermal conversion layer exceeds 5 ⁇ m, only the layer thickness may be increased without further effects.
- Figure 2 shows a schematic cross section of the photothermal conversion film according to another embodiment of the present invention.
- the illustrated photothermal conversion film includes a base film 110, a photothermal conversion layer 120, and a protective layer 130.
- the protective layer 130 may use an acryl resin having excellent adhesion with the photothermal conversion layer 120.
- the thickness of a protective layer is 0.1-3 micrometers.
- the thickness of the protective layer is less than 0.1 ⁇ m, the protective effect of the photothermal conversion layer 120 may be insufficient.
- the thickness of the protective layer exceeds 3 ⁇ m, in spite of the expansion of the photothermal conversion layer during light irradiation, the adhesion of the transfer material from the protective layer may not be weakened.
- Figure 3 shows a schematic cross section of the transfer film for OLED according to an embodiment of the present invention.
- the illustrated transfer film for OLED includes a base film 110, a photothermal conversion layer 120, and an organic light emitting material layer 210.
- an organic light emitting material layer 210 is further formed on the photothermal conversion film illustrated in FIG. 1.
- the tungsten oxide-based material included in the photothermal conversion layer 120 absorbs infrared rays and then emits heat, thereby expanding the photothermal conversion layer in the film thickness direction.
- the transfer may be performed on the substrate to be transferred.
- Figure 4 shows a schematic cross-section of the transfer film for OLED according to another embodiment of the present invention.
- the illustrated transfer film for OLED includes a base film 110, a photothermal conversion layer 120, a protective layer 130, and an organic light emitting material layer 210.
- a 3 ⁇ m thick photothermal conversion layer comprising a photothermal conversion material described in Table 1 was formed on a 100 ⁇ m thick PET film.
- a urethane acrylate (20 parts by weight of the photothermal conversion material) was used as the binder, and Irgacure 651 (0.5 part by weight of the photothermal conversion material, manufactured by BASF) was used as the photoinitiator.
- Isopropyl alcohol was used as a solvent, and the viscosity of the composition consisting of the photothermal conversion material, the binder, the photoinitiator, and the solvent was 20 cps.
- the light-to-heat conversion efficiency is 50W using a laser continuous wave to evaluate the degree of bulge relative to the initial thickness by irradiation at 1.0m / min from the back of the PET film.
- the photothermal conversion efficiency was equal to or higher than that of the photothermal conversion film according to Comparative Example 1 using carbon black, and in particular, the visible light transmittance was 50%. As a result, it was markedly high.
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Abstract
Description
Claims (16)
- 기재 필름; 및상기 기재 필름 상에 형성되는 광열변환층;을 포함하고,상기 광열변환층은 산화텅스텐계 물질을 포함하여, 가시광 투과도가 20% 이상인 것을 특징으로 하는 광열변환 필름.
- 제1항에 있어서,상기 산화텅스텐계 물질은산화텅스텐 분말을 포함하는 것을 특징으로 하는 광열변환 필름.
- 제1항에 있어서,상기 산화텅스텐계 물질은수소 또는 금속 함유 산화텅스텐(MxWO3, M은 수소 또는 금속, 0.1<x<1) 분말을 포함하는 것을 특징으로 하는 광열변환 필름.
- 제3항에 있어서,상기 금속은Li, Na, K, Rb, Cs, Ca, Ba, Sr, Fe, Sn, Mo, Nb, Ta, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Al, Ga, In 및 Tl 중에서 1종 이상 선택되는 것을 특징으로 하는 광열변환 필름.
- 제1항에 있어서,상기 광열변환층은산화텅스텐계 물질 100중량부에 대하여, 바인더 10~50중량부 및 광개시제 0.1~5중량부를 포함하는 것을 특징으로 하는 광열변환 필름.
- 제1항에 있어서,상기 광열변환층의 두께는1~5㎛인 것을 특징으로 하는 광열변환 필름.
- 제1항에 있어서,상기 광열변환층 상에는보호층이 더 형성되어 있는 것을 특징으로 하는 광열변환 필름.
- 제7항에 있어서,상기 보호층의 두께는0.1~3㎛인 것을 특징으로 하는 광열변환 필름.
- 기재 필름;상기 기재 필름 상에 형성되는 광열변환층; 및상기 광열변환층 상에 형성되는 유기발광 물질층;을 포함하고,상기 광열변환층은 산화텅스텐계 물질을 포함하여, 가시광 투과도가 20% 이상인 것을 특징으로 하는 OLED용 전사 필름.
- 제9항에 있어서,상기 산화텅스텐계 물질은산화텅스텐 분말을 포함하는 것을 특징으로 하는 OLED용 전사 필름.
- 제9항에 있어서,상기 산화텅스텐계 물질은수소 또는 금속 함유 산화텅스텐(MxWO3, M은 수소 또는 금속, 0.1<x<1) 분말을 포함하는 것을 특징으로 하는 OLED용 전사 필름.
- 제9항에 있어서,상기 알칼리금속은Li, Na, K, Rb, Cs, Ca, Ba, Sr, Fe, Sn, Mo, Nb, Ta, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Al, Ga, In 및 Tl 중에서 1종 이상 선택되는 것을 특징으로 하는 OLED용 전사 필름.
- 제9항에 있어서,상기 광열변환층은산화텅스텐계 물질 100중량부에 대하여, 바인더 10~50중량부 및 광개시제 0.1~5중량부를 포함하는 것을 특징으로 하는 OLED용 전사 필름.
- 제9항에 있어서,상기 광열변환층의 두께는1~5㎛인 것을 특징으로 하는 OLED용 전사 필름.
- 제9항에 있어서,상기 광열변환층 상에는 보호층이 더 형성되어 있고,상기 유기발광 물질층은 상기 보호층 상에 형성되어 있는 것을 특징으로 하는 OLED용 전사 필름.
- 제15항에 있어서,상기 보호층의 두께는0.1~3㎛인 것을 특징으로 하는 OLED용 전사 필름.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380037472.8A CN104471737B (zh) | 2012-07-13 | 2013-06-25 | 可见光透射性优秀的光热转换膜及利用其的有机发光二极管用转印膜 |
US14/413,601 US9312490B2 (en) | 2012-07-13 | 2013-06-25 | Photothermal conversion film having good visible light penetrability, and transfer film for OLED using same |
JP2015521538A JP6002321B2 (ja) | 2012-07-13 | 2013-06-25 | 可視光透過性に優れた光熱変換フィルム及びこれを用いたoled用転写フィルム |
EP13816013.0A EP2874193B1 (en) | 2012-07-13 | 2013-06-25 | Photothermal conversion film having good visible light transmittance, and transfer film for oled using same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020120076921A KR101470077B1 (ko) | 2012-07-13 | 가시광 투과성이 우수한 광열변환 필름 및 이를 이용한 oled용 전사 필름 | |
KR10-2012-0076921 | 2012-07-13 |
Publications (1)
Publication Number | Publication Date |
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WO2014010845A1 true WO2014010845A1 (ko) | 2014-01-16 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/KR2013/005601 WO2014010845A1 (ko) | 2012-07-13 | 2013-06-25 | 가시광 투과성이 우수한 광열변환 필름 및 이를 이용한 oled용 전사 필름 |
Country Status (5)
Country | Link |
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US (1) | US9312490B2 (ko) |
EP (1) | EP2874193B1 (ko) |
JP (1) | JP6002321B2 (ko) |
CN (1) | CN104471737B (ko) |
WO (1) | WO2014010845A1 (ko) |
Families Citing this family (7)
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TWI567120B (zh) * | 2016-01-04 | 2017-01-21 | 台虹科技股份有限公司 | 防水透濕薄膜 |
CN106642757A (zh) * | 2016-11-25 | 2017-05-10 | 清华大学 | 光热转换器件 |
US11577537B2 (en) | 2017-06-19 | 2023-02-14 | Sumitomo Metal Mining Co., Ltd. | Light to heat conversion layer and method for manufacturing the same, and donor sheet using the same |
CN109987855B (zh) * | 2017-12-29 | 2022-08-12 | 法国圣戈班玻璃公司 | 隔热玻璃、制备方法及隔热玻璃产品 |
JP6540859B1 (ja) | 2018-05-09 | 2019-07-10 | 住友金属鉱山株式会社 | 複合タングステン酸化物膜及びその製造方法、並びに該膜を有する膜形成基材及び物品 |
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US20150179939A1 (en) | 2015-06-25 |
KR20140009885A (ko) | 2014-01-23 |
EP2874193A1 (en) | 2015-05-20 |
JP6002321B2 (ja) | 2016-10-05 |
US9312490B2 (en) | 2016-04-12 |
CN104471737B (zh) | 2017-08-08 |
EP2874193A4 (en) | 2015-08-05 |
CN104471737A (zh) | 2015-03-25 |
JP2015527700A (ja) | 2015-09-17 |
EP2874193B1 (en) | 2019-11-06 |
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