KR100352633B1 - a prloduction method of electro luminescent sheat - Google Patents
a prloduction method of electro luminescent sheat Download PDFInfo
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- KR100352633B1 KR100352633B1 KR1019990026703A KR19990026703A KR100352633B1 KR 100352633 B1 KR100352633 B1 KR 100352633B1 KR 1019990026703 A KR1019990026703 A KR 1019990026703A KR 19990026703 A KR19990026703 A KR 19990026703A KR 100352633 B1 KR100352633 B1 KR 100352633B1
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- 238000000034 method Methods 0.000 title claims abstract description 24
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 claims abstract description 27
- 239000004020 conductor Substances 0.000 claims abstract description 24
- 239000010410 layer Substances 0.000 claims description 40
- 238000000576 coating method Methods 0.000 claims description 27
- 239000011248 coating agent Substances 0.000 claims description 12
- 239000011247 coating layer Substances 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 3
- 239000003989 dielectric material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract description 21
- 239000000463 material Substances 0.000 abstract description 14
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 238000007650 screen-printing Methods 0.000 abstract description 7
- 239000005083 Zinc sulfide Substances 0.000 abstract description 5
- 238000004020 luminiscence type Methods 0.000 abstract description 5
- 229910052984 zinc sulfide Inorganic materials 0.000 abstract description 5
- 239000011701 zinc Substances 0.000 abstract description 3
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 abstract description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052725 zinc Inorganic materials 0.000 abstract description 2
- JMTIXSZQYHAMLY-UHFFFAOYSA-N [P].[Zn] Chemical compound [P].[Zn] JMTIXSZQYHAMLY-UHFFFAOYSA-N 0.000 abstract 1
- 239000010408 film Substances 0.000 description 19
- 239000011347 resin Substances 0.000 description 15
- 229920005989 resin Polymers 0.000 description 15
- ULDHMXUKGWMISQ-UHFFFAOYSA-N carvone Chemical compound CC(=C)C1CC=C(C)C(=O)C1 ULDHMXUKGWMISQ-UHFFFAOYSA-N 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 239000010409 thin film Substances 0.000 description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 125000004093 cyano group Chemical group *C#N 0.000 description 4
- 239000007850 fluorescent dye Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- ZYGHJZDHTFUPRJ-UHFFFAOYSA-N coumarin Chemical compound C1=CC=C2OC(=O)C=CC2=C1 ZYGHJZDHTFUPRJ-UHFFFAOYSA-N 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 2
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000001771 vacuum deposition Methods 0.000 description 2
- ZMLPKJYZRQZLDA-UHFFFAOYSA-N 1-(2-phenylethenyl)-4-[4-(2-phenylethenyl)phenyl]benzene Chemical group C=1C=CC=CC=1C=CC(C=C1)=CC=C1C(C=C1)=CC=C1C=CC1=CC=CC=C1 ZMLPKJYZRQZLDA-UHFFFAOYSA-N 0.000 description 1
- 108010043121 Green Fluorescent Proteins Proteins 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000007611 bar coating method Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229960000956 coumarin Drugs 0.000 description 1
- 235000001671 coumarin Nutrition 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- -1 indium peroxide Chemical class 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 1
- YYMBJDOZVAITBP-UHFFFAOYSA-N rubrene Chemical compound C1=CC=CC=C1C(C1=C(C=2C=CC=CC=2)C2=CC=CC=C2C(C=2C=CC=CC=2)=C11)=C(C=CC=C2)C2=C1C1=CC=CC=C1 YYMBJDOZVAITBP-UHFFFAOYSA-N 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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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
- H10K71/12—Deposition of organic active material using liquid deposition, e.g. spin coating
- H10K71/13—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing
-
- 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
- H10K50/844—Encapsulations
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
본 발명은 I.T.O필름에 형광체와 유전체와 도전체를 차례로 도포적층시킴에 있어서, 이들 물질의 특성에 부합되도록 조밀도를 달리하는 스크린(Mesh)에 의해 각물질들을 순차적으로 적층도포시켜주고 각 물질을 스크린 인쇄시킬때마다 열처리 과정을 실시하도록 하는 유기발광시트의 제조방법에 관한 것으로서,In the present invention, the phosphor, the dielectric, and the conductor are sequentially laminated on an ITO film, and each material is sequentially laminated and coated by a screen having different densities to match the properties of these materials. The present invention relates to a method of manufacturing an organic light emitting sheet to perform a heat treatment process every time the screen is printed.
형광체를 천연적으로 섬아연광인 황화아연 또는 아연의 혼합물을 사용함으로서 발광특성이 높고 전도성이 양호하여 반응속도가 빠르며, 제조공정이 복잡하지 않는 단계로 이루어진 스크린 인쇄 방법에 의해 제조되므로 용이하게 제조할 수 있고 생산성을 향상시키면서 제조원가도 낮출 수 있으며, 발광특성이 높아 고휘도를 유지하고 수명이 길며 부드러우면서도 내구성이 양호한 유기발광시트 제조할 수 있게 된다.By using a mixture of zinc sulfide or zinc, which is naturally phosphorescent zinc phosphor, phosphors have high luminescence properties and good conductivity, so the reaction rate is fast, and is manufactured by a screen printing method consisting of steps that are not complicated in manufacturing process. It is possible to reduce the manufacturing cost while improving the productivity, and it is possible to manufacture an organic light emitting sheet that maintains high brightness, has a long life, and is soft and durable with high luminous properties.
Description
본 발명은 유기발광시트(organic electro luminecent (EL)Sheat)의 제조방법에 관한 것으로서, 특히 스크린 인쇄 기법에 의해 제조하도록 하는 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing organic electroluminescent sheets (EL) Sheath, and more particularly, to a method for producing by screen printing.
이를 좀 더 상세하게 설명하면,To explain this in more detail,
I.T.O필름에 형광체와 유전체와 도전체를 차례로 도포적층시킴에 있어서, 이들 물질의 특성에 부합되도록 조밀도를 달리하는 스크린(Mesh)에 의해 각물질들을 순차적으로 적층도포시켜주고 각 물질을 스크린 인쇄시킬때마다 열처리 과정을 실시하도록 하는 유기발광시트의 제조방법에 관한 것이다.In the case of coating and laminating phosphors, dielectrics and conductors on the ITO film in order, each material is sequentially laminated and screen-printed by a screen having different densities to match the properties of these materials. It relates to a method of manufacturing an organic light emitting sheet to perform a heat treatment process every time.
유기발광시트(EL Sheat)는 주지된 바와같이 분체의 발광조성물(형광체)을 분산(후막)시켜서 된 분사형과 얇은 증착막의 형광체를 사용하는 박막형이 알려져 있다. 유기발광시트는 발광조성물로 되는 발광층의 양면에 양극과 음극의 전기를 공급할 수 있도록 도전막층의 증착되고 그 외측으로는 방습필름층이 밀폐되게 접층되는 것이 기본적인 구조로서, 전압이 전극에 인가되면 형광층의 결정 내에서는 전계에 의해 가속된 전자가 발광원소에 충돌하여 여기자(exciton)를 발생시키게 되고 여기자(exciton)가 기저상태로 복귀할때 발광(인광:phoshorescence, 형광:fluorescence)하게 되며, 이와같은 현상을 전기발광(elec Troluminexcence)이라 한다.As is well known, the organic light emitting sheet (EL Sheat) is known to be a thin film type using a spray type obtained by dispersing (thick film) a light emitting composition (phosphor) of a powder and a phosphor of a thin deposited film. The organic light emitting sheet has a basic structure in which a conductive film layer is deposited on both sides of a light emitting layer that is a light emitting composition so as to supply electricity of an anode and a cathode, and a moisture-proof film layer is hermetically sealed on the outside thereof. In the crystal of the layer, electrons accelerated by the electric field collide with the light emitting element to generate excitons, and when the excitons return to the ground state, they emit light (phosphorescence, fluorescence). The same phenomenon is called electroluminescence (elec Troluminexcence).
유기발광시트의 특성은 약 5V정도이 저전압에 의해서도 구동시킬 수 있고 고휘도(100∼100,000 cd/m2)의 면발광(surface emission)의 있으며, 응답속도가 빠르고 박막화시킬 수 있으며 형광물질의 적절한 선택에 의해 발광색상을 용이하게 변화시킬 수 있다는 것이다.The characteristics of the organic light emitting sheet are about 5V, which can be driven by low voltage, high luminance (100 ~ 100,000 cd / m 2 ) surface emission, fast response speed and thin film, and suitable for the selection of fluorescent material. This makes it possible to easily change the emission color.
이와같은 유기 발광시트에서 본 발명은 분체의 발광조성물(형광체)을 분산시켜서된 분사형의 유기발광시트를 제공하려는 것이다.The present invention in such an organic light emitting sheet is to provide a spray type organic light emitting sheet by dispersing the light emitting composition (phosphor) of the powder.
종래의 유기발광시트중에서 박막적층형유기박막발광시트는 저분자재료(host material)를 유기발광재로 사용하는 것으로서 저분자량 물질에 형광색소를 첨가시켜 형성하게 된다.In the conventional organic light emitting sheet, the thin film multilayer organic thin film light emitting sheet uses a low molecular weight (host material) as an organic light emitting material and is formed by adding fluorescent dyes to the low molecular weight material.
즉, 알루미늄 퀴놀리놀 화합물(aluminum guinloynol complex)(Alg3)·디스티릴베폐닐(distyrilbiphenyl)과 같은 저분자재료(host material)에 페릴렌재료(host material)에 페릴렌(perylene)과 같은 형광색소를 첨가시켜 줌으로서 획득할 수 있으며, 저분자계 색소화합물로 박막을 형성시켜주기 위해서는 주로 진공증착법을 이용하게 된다. 그러나, 이와같은 진공증착방법에 의해서는 박막을 균질하면서도 무결점 상태로 형성시켜주기가 용이치 못하고, 특히 유기층을 다양하게 형성시켜주는데 많은 시간이 요구되는등 효과적이지 못하였다.In other words, a fluorescent pigment such as perylene is added to a host material on a low molecular material such as an aluminum guinloynol complex (Alg 3 ) and distyryl biphenyl. It can be obtained by adding, and in order to form a thin film with a low molecular weight pigment compound, vacuum deposition is mainly used. However, such a vacuum deposition method is not easy to form a thin film in a homogeneous and flawless state, and in particular, it takes a lot of time to variously form the organic layer.
또한, 종래의 유기발광시트중에서 조성물(형광체)를 분산(후막)시켜서되는 분사형으로는 국내공개특허 공개번호제1999-013883호 유기이엘 소자의 제조방법이 알려져 있는데,In addition, as a spray type in which a composition (phosphor) is dispersed (thick film) in a conventional organic light emitting sheet, there is a method of manufacturing an organic EL device of Korea Patent Publication No. 1999-013883.
이는 고분자화(conjugating)시킨 공역계 고분자 유기화합물의 전구체를 소자용 조성물로 하여 카세트에 충진시켜 주고 헤드로 부터 토출시켜 패턴을 도포하도록 하는 잉크젯방법이다.This is an inkjet method in which the precursor of the conjugated conjugated organic polymer organic compound is filled into a cassette using the composition for device and discharged from the head to apply the pattern.
그러나, 이와같은 잉크젯방법은 조성물을 충진시켜주기 위한 카세트를 구비하고 잉크젯방식에 의해 패턴화시킬 수 있도록하는 장치를 마련하여야 하며, 특히 조성물에는 휘발성물질이 함유되어 있기 때문에 휘발성물질이 비록 밀폐성의 카셋트에 충진되어 있을지라도 시간이 경과할수록 휘발성물질은 헤드를 통하여 배출되어지게 되므로 조성물은 그 점도가 점진적으로 높아지게 되고 결국 헤드는 점도가 높아진 조성물로 인하여 출구가 막히게 되는 현상이 발생하게 된다.However, such an ink jet method should be provided with a cassette for filling the composition and provided with an apparatus for patterning by the ink jet method. Particularly, since the composition contains a volatile material, the volatile material may contain a sealed cassette. Even though it is filled in, the volatiles are discharged through the head over time, so that the composition gradually increases in viscosity, and eventually the head is blocked by the high viscosity composition.
이와같은 막힘현상을 방지하기 위해서는 조성물의 점도를 낮게 유지시켜주거나 개봉된 카셋트는 그 조성물을 한번에 모두 소모시켜서 하는데, 조성물의 점도를 낮추게 되면 형광(발광)체 끼리의 간격이 크게 이격되어 발광특성이 떨어지게 되는 문제와 헤드에서 토출된 조성물이 흘러 내려 패턴화를 효과적으로 실시할 수 없게 되는 문제가 있었으며,In order to prevent such clogging, the viscosity of the composition is kept low or the opened cassette consumes the composition all at once. When the viscosity of the composition is lowered, the distance between the fluorescent (luminescent) bodies is greatly separated and the light emission characteristics are improved. There was a problem that the falling and the composition discharged from the head flows down and can not be effectively patterned,
또 개봉된 카셋트의 조성물은 모두 일괄 소모시킨다하더라도 휘발성물질의 휘발로인하여 사용중에는 막힘현상이 발생하게 될 염려가 있고 헤드의 출구가 막히게 된다면 그 카세트를 사용할 수 없게 되는 문제가 있다.In addition, even if the composition of the opened cassette is consumed all at once, there is a risk of clogging during use due to volatilization of volatile substances, and there is a problem that the cassette cannot be used if the outlet of the head is blocked.
또한 잉크젯 방법은 작업성이 낮아 생산성이 떨어지므로 제품을 대량으로 생산하기가 용이치 못하고 생산원리도 크게 상승하게 된다.In addition, the inkjet method is not easy to produce a large volume of products and productivity is greatly increased because of low productivity.
본 발명은 상기와같은 문제와 폐단을 해소 할 수 있도록 된 유기발광시트의 제조방법을 제공하려는 것이다.The present invention is to provide a method for producing an organic light emitting sheet that can solve the above problems and waste.
본 발명은 유기발광시트를 제조하기 위한 여러가지의 방법, 예컨데, 포토리토 그래픽방법, 중공증착방법, 프랜팅방법, 트랜스퍼방법, 딥핑방법, 스핀코팅방법, 캐필라리방법, 바코팅방법, 롤코팅방법들 중에서 프린트방법에 의해 유기발광시트를 제조하도록 하는 방법을 개선하여서 된 제조방법을 제공하려는 것이다.The present invention is a method for producing an organic light emitting sheet, for example, photolithographic method, hollow deposition method, printing method, transfer method, dipping method, spin coating method, capillary method, bar coating method, roll coating Among the methods is to provide a manufacturing method by improving the method for producing an organic light emitting sheet by a printing method.
본 발명은 형광체와 유전체와 도전체를 프링팅 시킬 때 밀도가 조밀한 망사(Mesh)를 사용하여 프린팅 시키고 각 물질을 프린팅시킨 후 소정 열처리 과정을 실시하도록 하며, 외면에는 방습절연코팅을 실시하도록 하는 유기발광시트의 제조방법을 제공하려는데 그 목적이 있다.The present invention is to print using a dense mesh (mesh) when printing a phosphor, a dielectric and a conductor, and to perform a predetermined heat treatment process after printing each material, the moisture-proof insulation coating on the outer surface An object of the present invention is to provide a method for manufacturing an organic light emitting sheet.
본 발명의 다른 목적은 외기가 유통되는 것이 방지되고 정화된 실내에서 인쇄를 실시토록 하여 먼지와 같은 미세한 이물질의 침투를 방지할 수 있도록 하고, 통상의 상온과 습도가 높지않은 상태에서 실시토록 하여 발광특성을 향상시켜 줄 수 있도록 된 유기발광시트의 제조방법을 제공하는데 있다.Another object of the present invention is to prevent the inflow of outside air and to print in a purified room to prevent the penetration of fine foreign substances such as dust, and to emit light at a normal room temperature and humidity is not high It is to provide a method of manufacturing an organic light emitting sheet that can improve the characteristics.
본 발명의 또 다른 목적은 복잡하지 않는 제조공정에 의해 보다 용이하게 제조할 수 있도록 하고 제조시간을 단축시킬 수 있도록 하며, 대량으로 제조할 수 있도록 하여 제조원가를 절감시킬 수 있도록 된 유기발광시트의 제조방법을 제공하는데 있다.Another object of the present invention is to manufacture an organic light emitting sheet that can be manufactured more easily by a non-complicated manufacturing process, to shorten the manufacturing time, and to be manufactured in large quantities to reduce the manufacturing cost To provide a method.
본 발명의 상기 및 기타목적은,The above and other objects of the present invention,
유기발광시트를 제조하는 것에 있어서,In manufacturing an organic light emitting sheet,
I.T.O필름(2)의 I.T.O면상에 형광체를 150∼250매쉬의 망사로서 100∼150㎛의 두께로 도포시킨 후 90∼120℃에서 5∼15분간 열처리하여 형광체층(3)을 형성하여 전극(7)을 연결시키는 형광체도포공정(11)과, 형광체층(3)의 상면에 유전체를 200∼300매쉬의 망사로서 150∼250㎛의 두께로 도포시킨 후 90∼120℃에서 2-8분간 열처리 하여 유전체층(4)을 증착시키는 유전체도포공정과,The phosphor was coated on the ITO surface of the ITO film 2 as a mesh of 150 to 250 mesh with a thickness of 100 to 150 μm and then heat treated at 90 to 120 ° C. for 5 to 15 minutes to form the phosphor layer 3 to form an electrode 7 ) Is coated on the upper surface of the phosphor layer 3 and the dielectric layer is coated with a thickness of 150 to 250 μm as a mesh of 200 to 300 mesh and then heat treated at 90 to 120 ° C. for 2 to 8 minutes. A dielectric coating process for depositing the dielectric layer 4,
유전체층(4)의 상면에 도전체를 200∼300 매쉬의 망사로서 100∼200㎛의 두께로 도포시킨 후 90∼120℃에서 5∼15분간 열처리하여 도전체층(5)을 증착시키고 도전체층(5)에 전국(8)을 연결시키는 도전체 도포공정과 도전체층(5)을 포함하는 외면에 통상의 UV잉크 또는 IR잉크를 50∼150㎛두께의 방습절연코팅층(6)으로 코팅시키는 방습·절연 코팅공정(14)으로 이루어지는 것을 특징으로 하는 유기발광시크제조공정(10)에 의해 달성된다.The conductor is applied to the upper surface of the dielectric layer 4 as a mesh of 200 to 300 mesh with a thickness of 100 to 200 μm, and then heat-treated at 90 to 120 ° C. for 5 to 15 minutes to deposit the conductor layer 5 and the conductor layer 5. (2) A coating process for connecting the whole country (8) and an outer surface including the conductive layer (5), and a moisture-proof and insulating coating of ordinary UV ink or IR ink with a moisture-proof insulating coating layer (6) having a thickness of 50 to 150 µm. It is achieved by the organic light emitting chic manufacturing process 10, characterized in that the coating process (14).
망사는 각 물질들을 적정한 두께로 도포시켜줄 수 있도록 sus망사 또는 대전망사를 사용하는것이 바람직하다.It is preferable to use sus mesh or electrified mesh so that the mesh can be applied to the appropriate thickness.
도전체는 silver 잉크(PASTE) 또는 Carvon잉크(PASTE)를 사용하되 이들을 건조가 늦기 때문에 열처리 과정을 실시하여 신속히 건조시켜 주는 것이 바람직하다.The conductor uses silver ink (PASTE) or Carvon ink (PASTE), but it is preferable to dry them quickly by performing a heat treatment process because they are late to dry.
형광체와 유전체는 용제에 일정량의 수지(Resin)를 첨가시켜 사용하는 것이 바람직하며,Phosphor and dielectric are preferably used by adding a certain amount of resin to the solvent,
형광체(밀유전체)의 수지로서는 시아노수지(Cyano Resin), 아크릴수지를 들 수 있다.Examples of the resin of the phosphor (mild dielectric) include cyano resin and acrylic resin.
도 1은 유기발광시트의 구조를 보인 확대 단면도.1 is an enlarged cross-sectional view showing the structure of an organic light emitting sheet.
도 2는 본 발명에 따른 유기발광시트의 제조공정도.Figure 2 is a manufacturing process of the organic light emitting sheet according to the present invention.
※도면의 주요부분에 대한 부호의 설명※ Explanation of symbols for main parts of drawing
1 : 유기발광시트 2 : I.T.O 필름1: organic light emitting sheet 2: I.T.O film
3 : 형광체층 4 : 유전체층3: phosphor layer 4: dielectric layer
5 : 도전체층 6 : 방습절연코팅층5: conductor layer 6: moisture proof insulating coating layer
7, 8 : 전극7, 8: electrode
본 발명의 상기 및 기타목적과 특징을 첨부도면에 의거한 다음의 상세한 설명에 의해 더욱 명확하게 이해 할 수 있을 것이다.The above and other objects and features of the present invention will be more clearly understood by the following detailed description based on the accompanying drawings.
도 1은 유기발광시트(1)의 구조를 확대하여 보인 단면도이고,1 is an enlarged cross-sectional view of the structure of the organic light emitting sheet 1,
도 2는 본 발명에 따른 유기발광시트제조공정(10)을 보인 계통도이다.2 is a schematic diagram showing an organic light emitting sheet manufacturing process 10 according to the present invention.
유기발광시트(1)는 도 1에 도시된 바와같이 필름(2)의 위에 전극(7)이 구비되는 형광체층(3)과 유전체층(4) 및 전극(8)이 구비되는 도전체층(5)이 차례로 증착되고, 그 외면과 필름(2)의 외면으로는 방습절연코팅(6)이 도포되는 구성으로 되어있다.As shown in FIG. 1, the organic light emitting sheet 1 includes a phosphor layer 3 including an electrode 7 and a conductor layer 5 including a dielectric layer 4 and an electrode 8 on the film 2. This is deposited in this order, and the moisture-proof insulating coating 6 is applied to the outer surface and the outer surface of the film 2.
상기 필름(2)은 투명체로서 100∼120㎛의 두께를 유지하는것을 사용하는 것이 바람직하다.It is preferable to use the said film 2 to maintain thickness of 100-120 micrometers as a transparent body.
본 발명은 상기 필름(2)의 일면에 형광체층(3)과 유전체층(4) 및 도전체층(5)을 스크린인쇄방법에 의해 순차적으로 프린팅(printing)시켜주는 것이 주지적인 특징이다.According to the present invention, the phosphor layer 3, the dielectric layer 4, and the conductor layer 5 are sequentially printed on one surface of the film 2 by a screen printing method.
형광체(3)을 형성시켜주는 형광체도포공정(11)에서 형광체로서는 ZnS 또는 Zn + Cu의 혼합물을 주원료로하여 제조된 조성물을 들 수 있는데 필요에 따라 형광색소를 첨가시켜 여러가지이 색상으로 발광시킬 수 있도록 할 수 있다. 형광체는 조성물와 수지(Resin)를 용제에 의해 일정한 비율로 혼합시켜주되 조성물과 수지는 1.0∼1.5 : 1의 비율로서 혼합시켜주는 것이 바람직하고 용재로서는 BCA를 들수 있다.In the phosphor coating process 11 for forming the phosphor 3, a phosphor prepared as a main raw material is a mixture of ZnS or Zn + Cu. A phosphor may be added to emit light in various colors, if necessary. can do. The phosphor is preferably mixed with a composition and a resin (Resin) in a fixed ratio by a solvent, but the composition and resin are preferably mixed in a ratio of 1.0 to 1.5: 1, and examples of the solvent include BCA.
형광체는 150∼250메쉬(mesh)의 조밀도를 유지하는 망사를 사용하여 100∼150㎛의 두께로 도포시켜주며,The phosphor is applied to a thickness of 100 ~ 150㎛ using a mesh to maintain the density of 150 ~ 250 mesh (mesh),
180∼220 메쉬의 망사를 이용하여 110∼130㎛의 두께로 도포시켜주는 것이 바람직하다. 도포를 완료한 후 80∼130℃의 온도 상태에서 7∼15분간 열처리를 실시하여 건조에 의해 습기를 제거하여 늘고 줄어드는 것과같은 변형을 방지하며 접촉성을 양호하게 유지시켜 줄 수 있도록하였다.It is preferable to apply to a thickness of 110 ~ 130㎛ using a mesh of 180 ~ 220 mesh. After the coating was completed, heat treatment was performed at a temperature of 80 to 130 ° C. for 7 to 15 minutes to remove moisture by drying to prevent deformation such as increase and decrease and to maintain good contactability.
유전체층(3)은 유전체와 수지(Resin)를 용재에 의해 일정한 비율로 혼합시킨 것을 인쇄 시켜주되, 유전체와 수지의 혼합비율은 0.2∼0.8 : 1 바람직하기로는 0.3∼0.6 : 1로 혼합시켜주고 수지로서는 시아노수지를 들 수 있다.Dielectric layer (3) is to print a mixture of dielectric and resin in a fixed ratio by a solvent, but the mixing ratio of dielectric and resin is 0.2 to 0.8: 1 preferably 0.3 to 0.6: 1 and mixed Cyano resin is mentioned as an example.
유전체층(3)을 형성시켜주는 유전체도포공정(12)은 200∼300메쉬의 망사를 이용하여 150∼250㎛의 두께로 도포시켜주되 230∼280메쉬 정도의 망사를 이용하여 180∼220㎛의 두께로 도포시켜주는 것이 바람직하다. 유전체층(3)을 도포시킨 후 열처리를 실시하여 건조시켜 습기를 제거하여 주고 변형방지와 양호한 접착성을 유지시켜줄 수 있도록 하되, 열처리는 80∼130℃의 상태에서 2-8분간 실시하도록 하였다.The dielectric coating process 12 for forming the dielectric layer 3 is applied with a thickness of 150 to 250 μm using a mesh of 200 to 300 mesh, and a thickness of 180 to 220 μm using a mesh of about 230 to 280 mesh. It is preferable to apply. After the dielectric layer 3 was applied, heat treatment was carried out to dry it to remove moisture, and to prevent deformation and maintain good adhesion, but the heat treatment was performed for 2-8 minutes at 80 to 130 ° C.
상기 형광체와 유전체에 혼합되는 수지(Resin)로서는 휘도를 양호하게 유지시켜줄수 있도록 하는 시아노수지(Cyano Resin)와 아크릴 수지를 들 수 있으며, 시아노또는 아크릴의 용제 60∼80%에 MEK용제를 20∼40%의 비율로 혼합하여 보다 용이하게 스크린 인쇄 시킬 수 있도록 하였다.The resin (Resin) to be mixed in the phosphor and the dielectric may include cyano resin and acrylic resin that can maintain good brightness. MEK solvent is used in 60 to 80% of the cyano or acrylic solvent. 20 to 40% of the ratio was mixed to make screen printing easier.
도전체층(5)을 형성시켜주는 도전체도포공정(13)은 200∼300메쉬의 망사를 이용하여 도전체를 100∼200㎛의 두께로 도포시켜주며, 바람직하기로는 230∼270메쉬의 망사를 이용하여 130∼170㎛의 두께로 도포시켜주는 것이다.In the conductor coating step 13 for forming the conductor layer 5, the conductor is applied to a thickness of 100 to 200 μm using a mesh of 200 to 300 mesh, preferably 230 to 270 mesh. It is applied to a thickness of 130 ~ 170㎛ using.
상기 도전체로서는 Silver 잉크(PASTE)와 Carvon 잉크(PASTE)를 들 수 있으며,Examples of the conductor include silver ink (PASTE) and carvon ink (PASTE).
이들은 건조속도가 늦져 상온에서 4시간 이상 방치하여만 건조(지건)되어지므로 스크린 인쇄를 실시한 후 열처리 과정에 의해 신속히 건조시켜주도록 하되 80∼130℃상태에서 5∼15분간 열처리 해주는 것이 바람직하다.They are dried (dry) only after being left for 4 hours or more at room temperature due to a slow drying rate, so that they are quickly dried by heat treatment after screen printing, but preferably heat treated for 5 to 15 minutes at 80 to 130 ° C.
도전체층(5)의 도포공정이 완료되면 외주면은 방습, 절연코팅층(6)으로 코팅시켜 유기발광시트(1)를 완성시켜준다. 방습절연코팅공정(14)에서 방습절연잉크로서는 빛 건조가 가능한 UV잉크와 원적외선에 의한 열건조가 가능한 IR잉크를 들 수 있으며, 이들은 도막을 일정한 두께로 유지시켜주고 접착력을 강화시켜주게 되며 습기의 침투를 차단하여 유기발광시트(1)의 기능이 변화되지 않도록 하여 주는데, 방습절연잉크를 도포시킨 후 잉크의 특성에 따라 빛 또는 열기에 의해 건조시켜주도록 한다.When the coating process of the conductor layer 5 is completed, the outer circumferential surface is coated with a moisture proof and insulating coating layer 6 to complete the organic light emitting sheet 1. The moisture proof insulating ink in the moisture proof insulation coating process (14) includes UV ink which can be dried light and IR ink which can be heat dried by far infrared rays, which keeps the coating film at a constant thickness and enhances adhesion and Blocking the penetration to prevent the function of the organic light emitting sheet (1) is changed, after applying the moisture-proof insulating ink to dry by light or heat according to the characteristics of the ink.
형광체층(3)과 도전체층(5)에 형성되는 전극(7)의 구성재료로서는 산화주석막과 ITO(Indium Tin Oxide)막 그리고 산화아연과 과산화인듐의 합성산화물막 등을 들 수 있으며,Examples of the constituent material of the electrode 7 formed on the phosphor layer 3 and the conductor layer 5 include a tin oxide film, an indium tin oxide (ITO) film, and a synthetic oxide film of zinc oxide and indium peroxide.
형광체와 도전체의 구성물질을 감안할때 ITO막으로 형성시켜주는 것이 바람직하다 하겠다.Considering the constituents of the phosphor and the conductor, it is preferable to form the ITO film.
본 발명은 다음의 구체적인 실시예에 의하여 보다 명확하게 이해할 수 있으며, 실시예에 의하여 본 발명이 한정되지 않음을 알려둔다.The present invention can be more clearly understood by the following specific examples, it is noted that the present invention is not limited by the examples.
실시예 1Example 1
① 형광체 도포공정(11)① Phosphor Coating Process (11)
투명체로된 필름(2)에서 I.T.O가 도포되면 일측면에 황화아연(ZnS)으로 된 형광물질(조성물)과 수지(Resin)를 1.4 : 1의 비율로 혼합된 형광체를 200메쉬의 망사를 사용하여 120㎛의 두께로 스크린 인쇄 시켜 형광체층(3)을 형성시켜주고,전극(7)을 인쇄(리벳팅)시킨 후 110℃에서 10분간 열처리를 실시하였다.When ITO is applied on the transparent film 2, phosphors mixed with zinc sulfide (ZnS) and resin (Resin) in a ratio of 1.4: 1 on one side of the mesh are fabricated using a mesh of 200 mesh. Screen printing was performed to a thickness of 120 μm to form the phosphor layer 3, and after the electrode 7 was printed (riveted), heat treatment was performed at 110 ° C. for 10 minutes.
② 유전체(절연체)도포공정(12)② Dielectric (Insulator) Coating Process (12)
형광체층(13)의 표면에 유전체물질과 수지가 1.1 : 1의 비율로 혼합된 유전체를 250메쉬의 망사를 사용하여 200㎛의 두께로 프린팅 도포시켜준 후 110℃에서 5분간 열처리하여 완전히 건조시켰다.The dielectric material and resin mixed on the surface of the phosphor layer 13 in a ratio of 1.1: 1 were printed and coated with a thickness of 200 μm using a mesh of 250 mesh, and then dried at 110 ° C. for 5 minutes to completely dry. .
③도전체 도포공정(13)③ Conductor coating process (13)
유전체층(4)의 표면에 Silver잉크를 250메쉬의 망사로서 150㎛의 두께로 도포시키고 전극(8)을 인쇄(리벳팅)시킨 후 110℃에서 10분간 열처리하여 완전히 건조시켰다.Silver ink was applied to the surface of the dielectric layer 4 as a mesh of 250 mesh to a thickness of 150 μm, and the electrode 8 was printed (riveted), followed by heat treatment at 110 ° C. for 10 minutes to dry completely.
④방습절연코팅공정④ Moisture proof insulation coating process
필름(2)의 타측면과 도전체층(5)의 외면을 비롯하여 외주에 UV잉크를 도포시킨 후 빛으로 건조시켜 최종 목적물인 유기 발광시트(1)를 얻었다.UV ink was applied to the outer circumference including the other side of the film (2) and the outer surface of the conductor layer (5), and then dried by light to obtain an organic light emitting sheet (1) as a final target.
실시예 2Example 2
도전체도포공정(13)에서 Silver잉크를 대신하여 Carvon잉크를 사용하고, 방습절연코팅공정(14)에서 UV잉크를 대신하여 IR잉크를 사용하여 코팅시킨 후 열건조시킨 것외에는 실시예 1과 동일하게 실시하여 최종 목적물인 유기발광시트(1)를 얻었다.Carvon ink is used instead of silver ink in the conductor coating process (13), and the same method as in Example 1 except that heat-drying after coating by using IR ink instead of UV ink in the moisture proof insulation coating process (14). The organic light emitting sheet (1) as a final target product was obtained.
상기 실시예1 및 실시예2에 의해 얻어진 유기 발광시트(1)들의 발광특성을 조사하였는데, 통상의 실온상태에서 특성조사를 실시하였다.The luminescence properties of the organic light emitting sheets 1 obtained in Examples 1 and 2 were investigated, but the characteristics were investigated at normal room temperature.
(1) 발광개시시기 및 발광개시전압특성(1) Light emission start time and light emission start voltage characteristics
발광전압은 190 volt에서부터 점진적으로 증가시켜준 후 70volt에서 발광이 개시되었다.The emission voltage gradually increased from 190 volts, and then light emission started at 70 volts.
(2)휘도(광도)특성(2) luminance (luminance) characteristics
발광상태가 완전히 유지된 직후의 휘도 특성과 발광상태에서 지속적으로 휘도특성을 조사하였으나 변화가 없이 80cd/m2지속적으로 유지하였다.The luminance characteristics immediately after the emission state was completely maintained and the luminance characteristics were continuously investigated in the emission state, but were continuously maintained at 80 cd / m 2 without any change.
(3)온도특성(3) Temperature characteristic
완전한 발광상태를 유지한 상태에서 분후부터 발광유기소자의 온도특성을 조사하였으며 15℃상태를 지속적으로 유지하였다.The temperature characteristics of the organic light-emitting device were investigated after minutes in the state of maintaining the complete luminescence state, and kept at 15 ° C continuously.
이상에서와 같이 본 발명에 따르면,As described above, according to the present invention,
형광체를 천연적으로 섬아연광인 황화아연 또는 아연의 혼합물을 사용함으로서 발광특성이 높고 전도성이 양호하여 반응속도가 바르며, 제조공정이 복작하지 않는 단계로 이루어진 스크린 인쇄방법에 의해 제조되므로 용이하게 제조할 수 있고 생산성을 향상시키면서 제조원가도 낮출 수 있으며, 발광특성이 높아 고휘도를 유지하고 수명이 길며 내구성이 양호한 유기발광시트(1) 제조 할 수 있게 된다는 것이다.By using a mixture of zinc sulfide or zinc, which is naturally spun phosphor, the phosphor has a high luminescence property and good conductivity, so the reaction rate is fast, and is manufactured by a screen printing method consisting of steps that do not duplicate the manufacturing process. It is possible to reduce the manufacturing cost while improving productivity, and it is possible to manufacture the organic light emitting sheet 1 that maintains high brightness, long lifespan and good durability due to high luminescence properties.
뿐만아니라 본 발명은 형광체층(3)에, 페릴렌, 로다민과 그의 유도체등이 적색형광색소와 루브렌·퀴나리돈 및 그들의 유도체등의 녹색형광색소와, 쿠말린 및 그의 유도체, 디스트리비페닐 및 그의 유도체와 같은 청색형광색소를 첨가시켜주면더욱 다양한 색상으로 발광되는 발광조성물을 조성할 수 있게 된다.In addition, in the phosphor layer 3, perylene, rhodamine and derivatives thereof include green fluorescent dyes such as red fluorescent dyes, rubrene quinaridone and derivatives thereof, coumarin and its derivatives, and distribiol. By adding blue fluorescent dyes such as phenyl and derivatives thereof, it is possible to form a light emitting composition that emits light in various colors.
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| KR20030089618A (en) * | 2002-05-16 | 2003-11-22 | 주식회사 지에이코리아테크 | Self light-emitting flexible sheet used for making signboards and method for manufacturing the same |
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