KR101505817B1 - ink composition for LED PCB - Google Patents

ink composition for LED PCB Download PDF

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Publication number
KR101505817B1
KR101505817B1 KR1020140163911A KR20140163911A KR101505817B1 KR 101505817 B1 KR101505817 B1 KR 101505817B1 KR 1020140163911 A KR1020140163911 A KR 1020140163911A KR 20140163911 A KR20140163911 A KR 20140163911A KR 101505817 B1 KR101505817 B1 KR 101505817B1
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South Korea
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weight
parts
led
titanium oxide
talc
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KR1020140163911A
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Korean (ko)
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조성빈
권기백
김현수
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(주)솔라이트
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00Inks
    • C09D11/02Printing inks
    • C09D11/10Printing inks based on artificial resins
    • C09D11/106Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/34Silicon-containing compounds
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00Inks
    • C09D11/02Printing inks
    • C09D11/03Printing inks characterised by features other than the chemical nature of the binder
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2217Oxides; Hydroxides of metals of magnesium
    • C08K2003/222Magnesia, i.e. magnesium oxide
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2237Oxides; Hydroxides of metals of titanium

Abstract

The present invention relates to a technique for preventing transformation of surface of an LED PCD and finally improving reflection ratio of a light radiated from an LED by improving heat resistance for high temperature generated during use in a state of being installed on a LED lighting device or high temperature environment of soldering process of LED PCB by improving the composition and composition ratio of ink coated on the surface of LED PCB installed on the LED lighting device, which is a technique for improving heat resistance of LED PCB and finally increasing reflection rate of light by containing 25-40 parts by weight of titanium oxide based on 100 parts by weight of total composition formed by containing epoxy acrylate, acryl monomer, talc, titanium oxide, and light controlling agent. According to the present invention, an advantage of not causing troubles of increasing manufacturing costs and increasing failure rate in a reflection sheet laminating process by application of an existing reflection sheet by not additionally applying constitution of attachment type reflection sheet for improving an existing reflection ration by improvement of durability for transformation of LED PCB.

Description

LED PCB용 잉크 조성물 {ink composition for LED PCB}Ink composition for LED PCB {ink composition for LED PCB}

본 발명은 LED 조명기기에 장착되는 LED PCB의 표면에 도포되는 잉크의 조성물과 조성비를 개선하여 LED 조명기기에 장착된 상태로 사용중 발생하는 고열이나 LED PCB의 솔더링 공정의 고온환경에 대해 내열성을 향상시킴으로써 LED PCB 표면의 변형을 막을 수 있고 결국 LED로부터 조사되는 빛의 반사율을 향상시킬 수 있는 기술에 관한 것이다.The present invention improves the composition and composition ratio of the ink applied to the surface of the LED PCB mounted on the LED lighting device and improves the heat resistance against the high temperature generated during use and the high temperature environment of the LED PCB soldering process Which can prevent deformation of the surface of the LED PCB and ultimately improve the reflectance of light emitted from the LED.

더욱 상세하게는, 에폭시 아크릴레이트(epoxy acrylate), 아크릴 모노머(acrylic monomer), 탈크(talc), 티타늄 옥사이드(titanium oxide), 광증감제(photo sensitizer)를 포함하여 구성되는 전체 조성물 중에서 내열성에 강한 티타늄 옥사이드를 최적 비율로 구성하여 LED PCB의 내열성 향상 및 최종적으로는 빛의 반사율을 높이는 기술이다.
More particularly, the present invention relates to a resin composition which is excellent in heat resistance in an overall composition comprising epoxy acrylate, acrylic monomer, talc, titanium oxide and photo sensitizer. It is a technology that improves the heat resistance of LED PCB and ultimately increases the reflectance of light by composing titanium oxide at the optimum ratio.

최근 대부분의 LED 조명장치에 사용되는 PCB는 일반적인 흰색 바탕의 도료를 도포하여 열 경화 또는 자외선 경화를 거쳐 제작된다.Most of the PCBs used in most LED lighting devices are made by applying a general white-based paint and thermosetting or ultraviolet curing.

하지만 도료의 특성상 열에 약하여, 고온환경의 리플로우(reflow) 공정을 거치면 PCB에 도포된 도료는 변색되거나 변형되어 이후 LED 조명장치에 탑재되어 사용되는 경우 반사율이 떨어지는 경우가 발생한다.However, due to the characteristics of the paint, when the reflow process at a high temperature is weak, the paint applied to the PCB may be discolored or deformed, and the reflectance may be lowered when the LED is mounted on the LED lighting device.

이렇게 LED 조명장치의 반사율이 저하되면 결국 LED 조명장치의 전력효율도 떨어지게 된다. 한편, LED 조명장치에서는 LED 조명장치에 공급되는 전원 중 15% 정도만 발광하는 것에 사용되고 나머지 85%는 모두 발열되는데, 이렇게 LED 조명장치에서는 많은 열이 발생하므로 LED 조명장치의 사용중에도 PCB의 표면에 도포된 도료가 내열성이 약한 경우 시간이 지남에 따라 급격히 반사율이 떨어지게 되고 결국 LED 조명장치의 전력 효율이 저하되는 문제점이 있다.If the reflectivity of the LED lighting device is lowered, the power efficiency of the LED lighting device is lowered. On the other hand, in the LED lighting device, only about 15% of the power supplied to the LED lighting device is used to emit light, and the remaining 85% of the power is used to generate heat. Thus, since much heat is generated in the LED lighting device, When the heat resistance of the coating material is low, the reflectance rapidly decreases over time, and the power efficiency of the LED lighting device is deteriorated.

그러나, 기존 PCB에 사용되는 도료는 금속 패턴을 위한 나머지 표면에 대해 마스킹하고 금속 패턴 공정이 끝난 후 마스킹된 부분을 화학물질로 다시 벗겨 내기 위한 것이기 때문에 고온환경에서 내열성을 유지하는 것이 크게 중요한 이슈는 아니었다.However, since the paint used for the conventional PCB is to mask the remaining surface for the metal pattern and to peel back the masked portion to the chemical after the metal patterning process, it is important to maintain the heat resistance in a high temperature environment It was not.

또한, 기존에는 PCB에 금속 패턴을 하고 LED가 접합되는 부분을 제외한 나머지 금속 패턴 부분을 도포하는 방식에서도 반사율을 감안하여 내열성을 유지하는 정도의 것은 아니었다. 왜냐하면 반사율의 저하가 LED 조명장치에서 크게 민감하지 않았기 때문이다.In addition, in a conventional method of applying a metal pattern to a PCB and applying a portion of the metal pattern other than the portion where the LED is bonded, it was not so much as to maintain the heat resistance in consideration of the reflectance. This is because the decrease in the reflectance is not very sensitive to the LED lighting device.

여기서, 기존에는 빛의 반사율을 높일 필요가 있는 경우 접착형 반사시트를 별도로 사용하여 반사율의 저하를 극복하였는데 이는 LED 조명장치를 제작하는 단가가 상승하는 단점이 있고, 무엇보다도 LED PCB에 반사시트를 붙이는 공정이 추가됨에 따라 반사시트 붙이는 공정에서 LED PCB 제조상의 불량률을 높이는 단점이 있었다.
In the past, when it is necessary to increase the reflectance of light, the adhesive reflection sheet is separately used to overcome the decrease in the reflectance. This has the drawback that the manufacturing cost of the LED lighting device is increased. There is a disadvantage in that the defective rate of the LED PCB manufacturing process is increased in the process of attaching the reflection sheet.

1. 대한민국 특허출원 10-2009-0043797호 "인쇄회로기판 표면코팅용 열전도성 절연무기도료 조성물과 이를 이용한 인쇄회로기판"1. Korean Patent Application No. 10-2009-0043797 entitled "Thermally Conductive Insulating Inorganic Coating Composition for Coating a Printed Circuit Board Surface and Printed Circuit Board Using the Same"

2. 대한민국 특허출원 10-2002-0064414호 "수 현상형 감광성 솔더 레지스트 잉크 조성물"2. Korean Patent Application No. 10-2002-0064414 entitled " Water Developing Photosensitive Solder Resist Ink Composition "

3. 대한민국 특허출원 10-2005-0121480호 "수용성 코팅 조성물 및 그의 제조방법"
3. Korean Patent Application No. 10-2005-0121480 "Water-Soluble Coating Composition &

본 발명은 상기한 점을 감안하여 제안된 것으로, 본 발명의 목적은 LED 조명기기의 반사율을 향상시켜 결국 LED PCB의 전력 효율을 향상시키는 LED PCB용 잉크 조성물을 제공한다.
It is an object of the present invention to provide an ink composition for an LED PCB that improves the reflectivity of an LED lighting device and thereby improves the power efficiency of the LED PCB.

상기의 목적을 달성하기 위하여 본 발명에 따른 LED PCB용 잉크 조성물은 에폭시 아크릴레이트, 아크릴 모노머, 탈크, 티타늄 옥사이드, 광증감제를 포함하여 구성되는 전체 조성물의 100 중량부를 기준으로 티타늄 옥사이드는 25~40 중량부로 구성된다.In order to achieve the above object, the ink composition for an LED PCB according to the present invention comprises titanium oxide in an amount of 25 to 100 parts by weight based on 100 parts by weight of an entire composition comprising epoxy acrylate, acrylic monomer, talc, titanium oxide, 40 parts by weight.

그리고, 탈크는 10~20 중량부, 에폭시 아크릴레이트는 15~30 중량부, 아크릴 모노머는 10~25 중량부, 광증감제는 5~15 중량부로 구성됨이 바람직하다.Preferably, the talc is 10 to 20 parts by weight, the epoxy acrylate is 15 to 30 parts by weight, the acrylic monomer is 10 to 25 parts by weight, and the photosensitizer is 5 to 15 parts by weight.

한편, 광증감제는 자외선 파장대의 빛을 통해 경화 촉진을 유도하는 것으로 선택됨이 바람직하다.
On the other hand, the photosensitizer is preferably selected to induce curing acceleration through light in the ultraviolet wavelength range.

본 발명은 전체 조성물 중에서 내열성에 강한 티타늄 옥사이드를 최적의 비율로 구성하여 LED PCB의 고온 솔더링 공정이나 LED 조명기기에서 발생하는 고온으로부터 특히 내열성을 향상시킬 수 있고 이로 인해 LED PCB의 변형에 대한 내구성이 향상되는 장점이 있다.The present invention can improve the heat resistance particularly from the high temperature soldering process of the LED PCB or the high temperature generated in the LED lighting device by constituting the titanium oxide having the strong resistance to the heat resistance in the whole composition and thereby the durability against the deformation of the LED PCB There is an advantage to be improved.

또한, 본 발명은 LED PCB의 변형에 대한 내구성 향상으로 결국 LED 조명기기에서 조사되는 빛에 대한 반사율 저하를 막을 수 있다.In addition, the present invention improves durability against deformation of an LED PCB, thereby preventing a decrease in reflectance of light emitted from an LED lighting device.

또한, 본 발명은 LED PCB의 변형에 대한 내구성 향상으로 기존 반사율 개선을 위한 접착형 반사시트의 구성을 별도로 채용하지 않아도 되므로 기존 반사시트의 채용으로 인한 제조단가 상승이나 반사시트 접합 공정에서 발생하는 불량률 증가의 문제가 발생하지 않는다는 장점이 있다.In addition, since the present invention does not require the construction of the adhesive reflection sheet for improving the existing reflectivity by improving the durability against the deformation of the LED PCB, it is possible to increase the manufacturing cost due to the adoption of the existing reflective sheet, There is an advantage that the problem of increase does not occur.

또한, 본 발명은 LED PCB의 표면 중 고밀도의 금속 패턴 경계선상에서도 잉크 조성물의 도포시 번짐이 없어 정밀한 마킹이 가능하다.
Further, the present invention can precisely mark on the boundary surface of the high density metal pattern on the surface of the LED PCB because the ink composition does not spread when applied.

이하, 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail.

본 발명은 LED 조명장치에 탑재되는 LED PCB의 표면에 도포되는 잉크 조성물로서, LED PCB에 도포된 상태에서 솔더링 공정(예: 리플로우, 플로우)의 고온환경에 대해 내열성을 유지함으로써 솔더링 공정 후에 LED PCB 표면의 변성, 변색을 최소화하는 기술이다.The present invention relates to an ink composition applied to the surface of an LED PCB mounted on an LED lighting device, which maintains heat resistance against a high temperature environment of a soldering process (e.g., reflow, flow) while being applied to an LED PCB, It is a technology that minimizes the denaturation and discoloration of the PCB surface.

이처럼, 고온환경의 솔더링 공정을 거친 후 변성, 변색에 대해 내열성을 향상함으로써 결국 LED PCB가 LED 조명장치에 탑재된 상태에서 LED 조명장치로부터 조사되는 빛의 반사율 저하를 막을 수 있게 된다.As a result, after the soldering process in a high temperature environment, heat resistance is improved against denaturation and discoloration, so that it is possible to prevent a decrease in the reflectance of light emitted from the LED lighting device while the LED PCB is mounted on the LED lighting device.

여기서, LED 조명장치의 양호한 반사율이 유지되면 결국 LED 조명장치의 전력 효율이 향상되는 장점도 있다.Here, when the good reflectance of the LED lighting apparatus is maintained, the power efficiency of the LED lighting apparatus is improved.

한편, LED 조명장치는 외부로부터 인가되는 전원으로부터 빛을 조사하는 데에 대략 인가된 전원의 15% 정도를 사용하고 나머지는 열로 방출되어 LED 조명장치는 고온 상태를 유지하며 이러한 고온을 외부로 방열하기 위해 LED PCB에는 별도의 방열수단이 구비되기도 한다.In the meantime, the LED lighting device uses about 15% of the power applied to irradiate the light from the power source applied from the outside and the other is discharged as heat so that the LED lighting device maintains the high temperature state, The LED PCB may be provided with a separate heat dissipation means.

그러나, LED 조명장치에 탑재되는 LED PCB는 방열수단에도 불구하고 소정의 고온 환경에 노출되기 때문에 LED PCB 자체의 제작 공정에서의 고온 환경에 대한 내열성뿐만 아니라, LED 조명장치에 탑재된 상태로 사용 중에도 내열성을 유지해야만 양호한 반사율을 그대로 유지할 수 있다.However, since the LED PCB mounted on the LED lighting device is exposed to a predetermined high-temperature environment in spite of the heat dissipation means, it is not only heat-resistant to the high-temperature environment in the manufacturing process of the LED PCB itself, Good reflectance can be maintained as long as heat resistance is maintained.

본 발명은 LED PCB가 제작되는 고온환경이나 LED PCB가 사용되는 고온환경에서 내열성을 유지하여 변색, 변성이 되지 않고 양호한 반사율을 유지하도록 LED PCB에 도포되는 잉크 조성물의 구성요소와 구성요소의 비율을 개선하였다. 이러한, 잉크 조성물의 구성은 아래와 같다.
The present invention relates to a method of manufacturing an LED PCB, in which the ratio of the component to the component of the ink composition applied to the LED PCB is maintained so as to maintain the heat resistance in the high temperature environment in which the LED PCB is manufactured or the high temperature environment in which the LED PCB is used, Improvement. The constitution of such an ink composition is as follows.

본 발명에 따른 LED PCB용 잉크 조성물은 PCB에 LED가 직접 탑재되는 LED PCB의 표면에 도포되어 LED로부터 조사되는 빛의 반사율이 양호한 상태를 유지하도록 하는 것으로서, 에폭시 아크릴레이트, 아크릴 모노머, 탈크, 티타늄 옥사이드, 광증감제를 포함하는 혼성조성으로 구성된다.The ink composition for an LED PCB according to the present invention is applied to the surface of an LED PCB on which an LED is directly mounted on a PCB to maintain a good reflectivity of light emitted from the LED. The ink composition includes epoxy acrylate, acrylic monomer, talc, Oxide, and a photosensitizer.

바람직하게는 전체 조성물을 100 중량부로 가정했을 때 티타늄 옥사이드는 25~40 중량부로 혼합조성함이 바람직하다. 아래 표에서 자세히 설명되겠지만 LED PCB에서 반사율을 양호한 상태로 유지하기 위해서 티타늄 옥사이드의 혼합 비율이 가장 중요함을 확인할 수 있다.Preferably, the titanium oxide is mixed in an amount of 25 to 40 parts by weight based on 100 parts by weight of the total composition. As will be explained in detail in the table below, it can be seen that the mixing ratio of titanium oxide is the most important in order to maintain the reflectance of the LED PCB in good condition.

그리고, 티타늄 옥사이드와 함께 혼합되는 구성으로서 티타늄 옥사이드 25~40 중량부에 대해 탈크는 10~20 중량부, 에폭시 아크릴레이트는 15~30 중량부, 아크릴 모노머는 10~25 중량부, 광증감제는 5~15 중량부로 혼합조성됨이 바람직하다.The composition mixed with titanium oxide is 10 to 20 parts by weight of talc, 15 to 30 parts by weight of epoxy acrylate, 10 to 25 parts by weight of acrylic monomer, and 10 to 25 parts by weight of talc, based on 25 to 40 parts by weight of titanium oxide, Preferably 5 to 15 parts by weight.

여기서, 티타늄 옥사이드, 탈크, 에폭시 아크릴레이트, 아크릴 모노머, 광증감제에만 한정되는 것은 아니고 이외에도 왁스나 소포제 등의 첨가제를 추가로 혼합조성하여 잉크의 물성을 조절할 수도 있다.Here, the present invention is not limited to titanium oxide, talc, epoxy acrylate, acrylic monomer, and photosensitizer but may further include additives such as wax and defoamer to control physical properties of the ink.

이와 같은 본 발명의 잉크 조성물에 대한 물성 실험을 하였는데, 개별 구성요소별로 혼합조성 비율을 달리하면서 해당 구성요소가 전체 조성물의 물성에 미치는 영향을 실험하였다.The physical properties of the ink composition of the present invention were tested. The effects of the components on the physical properties of the entire composition were tested while varying the mixing ratio of the individual components.

아래 [표 1] 내지 [표 5]에서 반사율, 변성도, 변색도를 평가할 때 대략 4단계로 매우 양호, 양호, 보통, 미흡으로 나타내었다. 기호로 매우 양호는 "◎", 양호는 "○", 보통은 "△", 미흡은 "X"로 표시하였다.In the following [Table 1] to [Table 5], the reflectance, the degree of degeneration and the degree of discoloration were evaluated to be very good, good, normal, and insufficient in about 4 stages. The symbols "very good" and "good" are indicated by "◯", "○", "Δ" and "X" respectively.

먼저, 반사율에 대한 평가에서 매우 양호는 LED PCB에 잉크 조성물을 도포하여 자연 경화된 상태의 반사율(이하, '제1조건')과 LED PCB에 잉크 조성물을 도포한 후 고온환경의 솔더링 공정을 거친 후 반사율(이하, '제2조건')을 비교하였을 때 각 반사율에 차이가 없는 것을 의미하고, 미흡은 제1조건에 비해 제2조건의 반사율이 80%이하로 떨어진 것을 의미하고, 양호와 보통은 제1조건에 대한 제2조건의 반사율이 100%와 80% 사이의 값을 나타낸 것으로 상대적인 크기로 정하였다.Firstly, the evaluation of the reflectance is very good in that the ink composition is coated on the LED PCB and the reflectance (hereinafter referred to as the 'first condition') in a natural cured state and the ink composition are coated on the LED PCB and then subjected to a soldering process in a high temperature environment Means that there is no difference in each reflectance when the post-reflectance (hereinafter referred to as " second condition ") is compared, and the insufficiency means that the reflectance of the second condition falls below 80% The relative magnitude of the reflectance of the second condition for the first condition is between 100% and 80%.

양호는 제1조건에 대한 제2조건의 반사율이 대략 99~91% 사이의 값을 나타낼 때이고, 보통은 제1조건에 대한 제2조건의 반사율이 대략 90~81% 사이의 값을 나타낼 때를 의미한다.The good is when the reflectance of the second condition for the first condition is between about 99 and 91% and usually when the reflectance of the second condition for the first condition is between about 90 and 81% it means.

한편, 제1조건과 제2조건을 비교실험하기 위해서 제1조건에서의 솔더링은 고온환경의 계에 LEC PCB를 넣지 않고 LED PCB 중 솔더링이 필요한 부분에 대해서만 고온의 솔더링 과정을 거쳤다.In order to compare the first condition with the second condition, the soldering in the first condition was performed at a high temperature soldering process only in a portion of the LED PCB where the LEC PCB was not placed in a high temperature environment.

그리고, 변성도와 변색도에 대한 평가는 반사율의 평가와 달리 다른 방법으로 수행한 것은 아니고 반사율의 증감에 따라 육안으로 확인하였으며 반사율의 증감에 따른 육안상의 변성도와 변색도도 차이가 있었다.The evaluation of the degree of discoloration and the degree of discoloration was not performed in a different way from the evaluation of the reflectance, but was visually confirmed by increasing or decreasing the reflectance.

즉, 변성도와 변색도에 대해서는 특정 수치나 비율 변화에 따른 자체 평가를 하지 않고 제1조건과 제2조건에서 LED PCB의 도포면에 후발적으로 발생한 상태의 육안 관찰 후 반사율의 측정값을 기초로 상대적인 미흡, 보통, 양호, 매우 양호를 평가하였다.
That is, regarding the degree of degeneration and discoloration, it is relatively insufficient based on the measurement value of the reflectance after visual observation of the condition occurring later on the coated surface of the LED PCB in the first condition and the second condition, , Normal, good, and very good.

먼저, 아래 [표 1]은 탈크, 에폭시 아크릴레이트, 아크릴 모노머, 광증감제의 혼합조성 비율은 동일하게 유지하면서 티타늄 옥사이드의 혼합조성 비율을 달리하면서 티타늄 옥사이드가 잉크의 전체 조성물에 미치는 영향 중에서 반사율을 중심으로 평가를 하였다.First, Table 1 below shows the effects of the titanium oxide on the overall composition of the ink while varying the mixed composition ratio of the titanium oxide while maintaining the mixing ratio of the talc, epoxy acrylate, acrylic monomer, and photosensitizer to the same composition ratio, .

상세하게, 전체 조성물에서 탈크를 15 중량부, 에폭시 아크릴레이트를 25 중량부, 아크릴 모노머를 20 중량부, 광증감제를 10 중량부로 제한하고, 본 발명의 실시예로서 티타늄 옥사이드를 40 중량부(실시예 a), 35 중량부(실시예 b), 30 중량부(실시예 c), 25 중량부(실시예 d)로 구분하였으며, 본 발명의 비교예로서 티타늄 옥사이드를 20 중량부(비교예 a), 45 중량부(비교예 b)로 구분하여 반사율을 비교 평가하였다.Specifically, 15 parts by weight of talc, 25 parts by weight of epoxy acrylate, 20 parts by weight of acrylic monomer and 10 parts by weight of photosensitizer were used in the entire composition, and 40 parts by weight of titanium oxide as an embodiment of the present invention , 35 parts by weight (Example b), 30 parts by weight (Example c) and 25 parts by weight (Example d), and 20 parts by weight of titanium oxide as a comparative example of the present invention a) and 45 parts by weight (Comparative Example b).

Figure 112014112837427-pat00001
Figure 112014112837427-pat00001

위의 [표 1] 결과를 보면, 탈크 15 중량부, 에폭시 아크릴레이트 25 중량부, 아크릴 모노머 20 중량부, 광증감제 10 중량부에 대해 티타늄 옥사이드의 혼합조성을 증감시킴에 따라 반사율에 차이가 나타남을 알 수 있다.As a result of the above Table 1, there is a difference in reflectance between 15 parts by weight of talc, 25 parts by weight of epoxy acrylate, 20 parts by weight of acrylic monomer and 10 parts by weight of the photosensitizer by increasing or decreasing the mixed composition of titanium oxide .

즉, [표 1]의 "실험 1"에서는 탈크 15 중량부, 에폭시 아크릴레이트 25 중량부, 아크릴 모노머 20 중량부, 광증감제 10 중량부에 대해 티타늄 옥사이드가 30~35 중량부로 혼합조성될 때 반사율이 가장 양호한 매우 양호를 나타내었다.That is, in Experiment 1 of Table 1, when 15 parts by weight of talc, 25 parts by weight of epoxy acrylate, 20 parts by weight of acrylic monomer and 30 parts by weight of titanium oxide were mixed with 10 parts by weight of the photosensitizer, And the reflectance was the best.

그리고, 탈크 15 중량부, 에폭시 아크릴레이트 25 중량부, 아크릴 모노머 20 중량부, 광증감제 10 중량부에 대해 티타늄 옥사이드의 혼합조성이 25~40 중량부를 벗어난 20 중량부(비교예 a)와 45 중량부(비교예 b)에서는 반사율이 각각 미흡과 보통을 나타내었다.
Then, 20 parts by weight (Comparative Example a) and 45 parts by weight of titanium oxide (25 parts by weight) out of 25 to 40 parts by weight were mixed with 15 parts by weight of talc, 25 parts by weight of epoxy acrylate, 20 parts by weight of acrylic monomer, And the reflectance in the weight part (comparative example b) was insufficient and normal.

아래 [표 2]는 티타늄 옥사이드, 에폭시 아크릴레이트, 아크릴 모노머, 광증감제의 혼합조성 비율은 동일하게 유지하면서 탈크의 혼합조성 비율을 달리하면서 탈크가 잉크의 전체 조성물에 미치는 영향 중에서 반사율을 중심으로 평가를 하였다.Table 2 below shows the effect of talc on the overall composition of the ink while varying the composition ratio of the talc while keeping the mixing ratio of titanium oxide, epoxy acrylate, acrylic monomer, and photosensitizer to the same composition ratio, Respectively.

상세하게, 전체 조성물에서 티타늄 옥사이드를 30 중량부, 에폭시 아크릴레이트를 25 중량부, 아크릴 모노머를 20 중량부, 광증감제를 10 중량부로 제한하고, 본 발명의 실시예로서 탈크를 10 중량부(실시예 e), 15 중량부(실시예 f), 20 중량부(실시예 g)로 구분하였으며, 본 발명의 비교예로서 탈크를 25 중량부(비교예 c), 5 중량부(비교예 d)로 구분하여 반사율을 비교 평가하였다.Specifically, 30 parts by weight of titanium oxide, 25 parts by weight of epoxy acrylate, 20 parts by weight of acrylic monomer and 10 parts by weight of photosensitizer were used in the entire composition, and 10 parts by weight of talc as an embodiment of the present invention 25 parts by weight (Comparative Example c), 5 parts by weight (Comparative Example d), and 10 parts by weight (Comparative Example 4) ), And the reflectance was compared and evaluated.

아래 [표 2] 결과를 보면, 티타늄 옥사이드 30 중량부, 에폭시 아크릴레이트 25 중량부, 아크릴 모노머 20 중량부, 광증감제 10 중량부에 대해 탈크의 혼합조성을 증감시킴에 따라 반사율에 차이가 나타남을 알 수 있다.The results are shown in Table 2. The results are shown in Table 2. The results are shown in Table 2. The results are shown in Table 2. The results are shown in Table 2 below. Able to know.

Figure 112014112837427-pat00002
Figure 112014112837427-pat00002

즉, [표 2]의 "실험 2"에서는 티타늄 옥사이드 30 중량부, 에폭시 아크릴레이트 25 중량부, 아크릴 모노머 20 중량부, 광증감제 10 중량부에 대해 탈크가 15 중량부로 혼합조성될 때 반사율이 가장 양호한 매우 양호를 나타내었다.That is, in Experiment 2 of Table 2, when 30 parts by weight of titanium oxide, 25 parts by weight of epoxy acrylate, 20 parts by weight of acrylic monomer, and 10 parts by weight of the photosensitizer were mixed to prepare 15 parts by weight of talc, And it was very good.

그리고, 티타늄 옥사이드 30 중량부, 에폭시 아크릴레이트 25 중량부, 아크릴 모노머 20 중량부, 광증감제 10 중량부에 대해 탈크의 혼합조성이 10~20 중량부를 벗어난 25 중량부(비교예 c)와 5 중량부(비교예 d)에서는 반사율이 각각 보통과 미흡을 나타내었다.
Twenty-five parts by weight (Comparative Example c) and 5 parts by weight of a mixture composition of talc were mixed in an amount of 30 parts by weight of titanium oxide, 25 parts by weight of epoxy acrylate, 20 parts by weight of an acrylic monomer, 10 parts by weight of a photosensitizer, And in the weight portion (Comparative Example d), the reflectance was normal and insufficient, respectively.

아래 [표 3]은 티타늄 옥사이드, 탈크, 아크릴 모노머, 광증감제의 혼합조성 비율은 동일하게 유지하면서 에폭시 아크릴레이트가 잉크의 전체 조성물에 미치는 영향 중에서 반사율을 중심으로 평가를 하였다.Table 3 below shows evaluation of the effects of epoxy acrylate on the overall composition of the ink while maintaining the mixing ratio of titanium oxide, talc, acrylic monomer, and photosensitizer to the same composition ratio.

상세하게, 전체 조성물에서 티타늄 옥사이드를 30 중량부, 탈크를 15 중량부, 아크릴 모노머를 20 중량부, 광증감제를 10 중량부로 제한하고, 본 발명의 실시예로서 에폭시 아크릴레이트를 15 중량부(실시예 h), 20 중량부(실시예 i), 25 중량부(실시예 j), 30 중량부(실시예 k)로 구분하였으며, 본 발명의 비교예로서 에폭시 아크릴레이트를 35 중량부(비교예 e), 10 중량부(비교예 f)로 구분하여 반사율을 비교 평가하였다.Specifically, 30 parts by weight of titanium oxide, 15 parts by weight of talc, 20 parts by weight of acrylic monomer and 10 parts by weight of photosensitizer were used in the entire composition, and 15 parts by weight of epoxy acrylate 20 parts by weight (Example i), 25 parts by weight (Example J) and 30 parts by weight (Example K), and 35 parts by weight of epoxy acrylate as a comparative example of the present invention Example e), and 10 parts by weight (Comparative Example f).

아래 [표 3] 결과를 보면, 티타늄 옥사이드 30 중량부, 탈크 15 중량부, 아크릴 모노머 20 중량부, 광증감제 10 중량부에 대해 에폭시 아크릴레이트의 혼합조성을 증감시킴에 따라 반사율에 차이가 나타남을 알 수 있다.As shown in Table 3 below, the reflectance varies depending on the mixing ratio of epoxy acrylate to 30 parts by weight of titanium oxide, 15 parts by weight of talc, 20 parts by weight of acrylic monomer, and 10 parts by weight of photosensitizer Able to know.

즉, [표 3]의 "실험 3"에서는 티타늄 옥사이드 30 중량부, 탈크 15 중량부, 아크릴 모노머 20 중량부, 광증감제 10 중량부에 대해 에폭시 아크릴레이트가 20~25 중량부로 혼합조성될 때 반사율이 가장 양호한 매우 양호를 나타내었다.That is, in Experiment 3 of Table 3, when 30 parts by weight of titanium oxide, 15 parts by weight of talc, 20 parts by weight of acrylic monomer, and 10 parts by weight of the photosensitizer were blended with 20 to 25 parts by weight of epoxy acrylate And the reflectance was the best.

그리고, 티타늄 옥사이드 30 중량부, 탈크 15 중량부, 아크릴 모노머 20 중량부, 광증감제 10 중량부에 대해 에폭시 아크릴레이트의 혼합조성이 15~30 중량부를 벗어난 35 중량부(비교예 e)와 10 중량부(비교예 f)에서는 반사율이 각각 양호와 보통을 나타내었다.Then, 35 parts by weight (Comparative Example e) and 10 parts by weight of titanium oxide, 30 parts by weight of titanium oxide, 15 parts by weight of talc, 20 parts by weight of acrylic monomer, 10 parts by weight of photosensitizer, In the weight portion (Comparative Example f), reflectance was good and normal, respectively.

Figure 112014112837427-pat00003
Figure 112014112837427-pat00003

여기서, 비교예 e,f를 보면 에폭시 아크릴레이트가 15~30 중량부를 소폭 벗어낫 35 중량부나 10 중량부에서 미흡한 결과를 나타내지는 않음을 알 수 있고, 전체 조성물에 에폭시 아크릴레이트가 반사율에 끼치는 영향이 티타늄 옥사이드나 탈크에 비해서는 상대적으로 민감하지 않음을 알 수 있다.
In Comparative Examples e and f, it was found that the epoxy acrylate was slightly removed from 15 to 30 parts by weight and the result was insufficient at 35 parts by weight or 10 parts by weight, and it was found that the effect of epoxy acrylate on the reflectance Is relatively insensitive to titanium oxide and talc.

아래 [표 4]는 티타늄 옥사이드, 탈크, 에폭시 아크릴레이트, 광증감제의 혼합조성 비율은 동일하게 유지하면서 아크릴 모노머의 혼합조성 비율을 달리하면서 아크릴 모노머가 잉크의 전체 조성물에 미치는 영향 중에서 반사율을 중심으로 평가를 하였다.[Table 4] shows the relationship between the mixing ratio of the acrylic monomer and the total composition of the acrylic monomer while maintaining the mixing ratio of the titanium oxide, talc, epoxy acrylate and photosensitizer to the same, Respectively.

상세하게, 전체 조성물에서 티타늄 옥사이드를 30 중량부, 탈크를 15 중량부, 에폭시 아크릴레이트를 25 중량부, 광증감제를 10 중량부로 제한하고, 본 발명의 실시예로서 아크릴 모노머를 10 중량부(실시예 l), 15 중량부(실시예 m), 20 중량부(실시예 n), 25 중량부(실시예 o)로 구분하였으며, 본 발명의 비교예로서 아크릴 모노머를 30 중량부(비교예 g), 5 중량부(비교예 h)로 구분하여 반사율을 비교 평가하였다.Specifically, 30 parts by weight of titanium oxide, 15 parts by weight of talc, 25 parts by weight of epoxy acrylate and 10 parts by weight of photosensitizer were used in the entire composition, and 10 parts by weight of acrylic monomer (Comparative Example 1), 15 parts by weight (Example m), 20 parts by weight (Example n) and 25 parts by weight (Example o), and as a comparative example of the present invention, 30 parts by weight of an acrylic monomer g), and 5 parts by weight (Comparative Example h).

아래 [표 4] 결과를 보면, 티타늄 옥사이드 30 중량부, 탈크 15 중량부, 에폭시 아크릴레이트 25 중량부, 광증감제 10 중량부에 대해 아크릴 모노머의 혼합조성을 증감시킴에 따라 반사율에 소폭 차이가 나타남을 알 수 있다.As shown in Table 4 below, a slight difference in reflectance was observed when 30 parts by weight of titanium oxide, 15 parts by weight of talc, 25 parts by weight of epoxy acrylate, and 10 parts by weight of the photosensitizer were increased or decreased by mixing the composition of acrylic monomer .

즉, [표 4]의 "실험 4"에서는 티타늄 옥사이드 30 중량부, 탈크 15 중량부, 에폭시 아크릴레이트 25 중량부, 광증감제 10 중량부에 대해 아크릴 모노머가 20 중량부로 혼합조성될 때 반사율이 가장 양호한 매우 양호를 나타내었다. That is, in Experiment 4 of Table 4, when 30 parts by weight of titanium oxide, 15 parts by weight of talc, 25 parts by weight of epoxyacrylate, and 10 parts by weight of the photosensitizer were mixed to form an acrylic monomer of 20 parts by weight, And it was very good.

그리고, 티타늄 옥사이드 30 중량부, 탈크 15 중량부, 에폭시 아크릴레이트 25 중량부, 광증감제 10 중량부에 대해 아크릴 모노머의 혼합조성이 10~25 중량부를 벗어난 30 중량부(비교예 g)와 5 중량부(비교예 h)에서는 반사율이 모두 양호를 나타내었다.Then, 30 parts by weight (Comparative Example g) and 30 parts by weight of titanium oxide, 30 parts by weight of talc, 15 parts by weight of talc, 25 parts by weight of epoxy acrylate and 10 parts by weight of the photosensitizer were mixed, In the weight portion (Comparative Example h), the reflectance was all good.

여기서, 비교예 g,h를 보면 아크릴 모노머가 10~25 중량부를 소폭 벗어난 30 중량부나 5 중량부에서 모두 양호한 결과를 나타냄을 알 수 있는데, 이는 전체 조성물에서 아크릴 모노머가 반사율에 미치는 영향이 다른 구성보다 상대적으로 낮음을 알 수 있다.Here, in Comparative Examples g and h, it can be seen that both of 30 parts by weight and 5 parts by weight of acrylic monomer slightly apart from 10 to 25 parts by weight show good results. This is because the influence of acrylic monomer on the reflectance Is relatively low.

Figure 112014112837427-pat00004
Figure 112014112837427-pat00004

아래 [표 5]는 티타늄 옥사이드, 탈크, 에폭시 아크릴레이트, 아크릴 모노머의 혼합조성 비율은 동일하게 유지하면서 광증감제의 혼합조성 비율을 달리하면서 광증감제가 잉크의 전체 조성물에 미치는 영향 중에서 반사율을 중심으로 평가를 하였다.Table 5 below shows the effects of the photosensitizer on the overall composition of the ink while varying the mixing ratio of the photosensitizer while maintaining the mixing ratio of the titanium oxide, talc, epoxy acrylate, and acrylic monomer to be the same, Respectively.

상세하게, 전체 조성물에서 티타늄 옥사이드를 30 중량부, 탈크를 15 중량부, 에폭시 아크릴레이트를 25 중량부, 아크릴 모노머를 20 중량부로 제한하고, 본 발명의 실시예로서 광증감제를 5 중량부(실시예 p), 10 중량부(실시예 q), 15 중량부(실시예 r)로 구분하였으며, 본 발명의 비교예로서 광증감제를 20 중량부(비교예 i), 1 중량부(비교예 j)로 구분하여 반사율을 비교 평가하였다.Specifically, 30 parts by weight of titanium oxide, 15 parts by weight of talc, 25 parts by weight of epoxy acrylate and 20 parts by weight of acrylic monomer were used in the entire composition, and 5 parts by weight of a photosensitizer as an embodiment of the present invention 10 parts by weight (Example q), 15 parts by weight (Example r), and 20 parts by weight of the photosensitizer (Comparative Example i) and 1 part by weight Example j).

아래 [표 5] 결과를 보면, 티타늄 옥사이드 30 중량부, 탈크 15 중량부, 에폭시 아크릴레이트 25 중량부, 아크릴 모노머 20 중량부에 대해 광증감제의 혼합조성을 증감시킴에 따라 반사율에 소폭 차이가 나타남을 알 수 있다.As shown in Table 5 below, there is a slight difference in reflectance between 30 parts by weight of titanium oxide, 15 parts by weight of talc, 25 parts by weight of epoxy acrylate and 20 parts by weight of acrylic monomer by increasing or decreasing the composition of the photosensitizer .

즉, [표 5]의 "실험 5"에서는 티타늄 옥사이드 30 중량부, 탈크 15 중량부, 에폭시 아크릴레이트 25 중량부, 아크릴 모노머 20 중량부에 대해 광증감제가 10~15 중량부로 혼합조성될 때 반사율이 가장 양호한 매우 양호를 나타내었다. That is, in Experiment 5 of Table 5, when the photosensitizer is mixed with 10 to 15 parts by weight of 30 parts by weight of titanium oxide, 15 parts by weight of talc, 25 parts by weight of epoxyacrylate and 20 parts by weight of acrylic monomer, Was the most favorable and very good.

그리고, 티타늄 옥사이드 30 중량부, 탈크 15 중량부, 에폭시 아크릴레이트 25 중량부, 아크릴 모노머 20 중량부에 대해 광증감제의 혼합조성이 10~15 중량부를 벗어난 20 중량부(비교예 i)와 1 중량부(비교예 j)에서는 반사율이 각각 양호와 미흡을 나타내었다.Then, 20 parts by weight (Comparative Example i) and 10 parts by weight of a photosensitizer were added to 30 parts by weight of titanium oxide, 15 parts by weight of talc, 25 parts by weight of epoxy acrylate and 20 parts by weight of acrylic monomer, And the weight parts (comparative example j) exhibited good and poor reflectance, respectively.

여기서, 비교예 i,j를 보면 광증감제가 10~15 중량부를 소폭 벗어난 20 중량부에서는 양호를 나타내었지만 1 중량부에서는 미흡을 나타낸 것을 볼 때, 광증감제가 최소 5 중량부 이하의 혼합조성일 때는 전체 조성물에 광증감제가 반사율에 미치는 영향이 매우 높음을 알 수 있다.Here, in Comparative Examples i and j, although 20 parts by weight of the photosensitizer was slightly out of 10 to 15 parts by weight, it was insufficient at 1 part by weight. When the photosensitizer is at least 5 parts by weight It can be seen that the influence of the photosensitizer on the reflectance is very high in the entire composition.

한편, 광증감제는 자외선 파장대의 빛을 통해 경화 촉진을 유도하는 것으로 선택됨이 바람직하다.On the other hand, the photosensitizer is preferably selected to induce curing acceleration through light in the ultraviolet wavelength range.

Figure 112014112837427-pat00005
Figure 112014112837427-pat00005

위의 [표 1] 내지 [표 5]의 실험 결과를 통해 확인한 바와 같이 본 발명의 잉크 조성물을 구성하고 있는 티타늄 옥사이드, 탈크, 에폭시 아크릴레이트, 아크릴 모노머, 광증감제는 각각 25~40 중량부, 10~20 중량부, 15~30 중량부, 10~25 중량부, 5~15 중량부의 범위로 혼합조성하는 것이 가장 양호한 반사율을 구현하는 것을 비교예 a 내지 비교예 j의 비교 평가를 통해 확인하였다.As is clear from the results of the above Tables 1 to 5, the titanium oxide, talc, epoxy acrylate, acrylic monomer and photosensitizer constituting the ink composition of the present invention each contain 25 to 40 parts by weight 10 to 20 parts by weight, 15 to 30 parts by weight, 10 to 25 parts by weight, and 5 to 15 parts by weight, the best reflectivity is obtained. Respectively.

또한, 각 구성요소의 혼합조성 비율에서 티타늄 옥사이드, 탈크, 광증감제는 잉크 조성물이 반사율에 미치는 영향이 다른 구성요소에 비해 상대적으로 높음을 [표 1], [표 2], [표 5]를 통해 알 수 있다.In addition, the effects of titanium oxide, talc, and photosensitizer on the reflectance of the ink composition are relatively higher than those of other components in the composition ratio of each component [Table 1], [Table 2], [Table 5] .

특히, 티타늄 옥사이드는 금속산화물로서 잉크 조성물에 혼합조성되는 경우 반사율 향상에 큰 영향을 미치지만 상대적으로 40 중량부를 초과하면 LED PCB에 도포된 상태에서 다른 구성요소와의 결합력 저하로 이어져 내열성이 약해질 수 있다. 이러한 티타늄 옥사이드의 상으로는 srilankite, anatase, rutile, brookite, amorphous 등이 있는데, anatase와 rutile 중 하나를 채택함이 바람직하다.Particularly, when titanium oxide is mixed with an ink composition as a metal oxide, titanium oxide has a great influence on the improvement of the reflectance. However, when it is more than 40 parts by weight, the bonding strength with other components decreases and the heat resistance is weakened . These titanium oxide phases include srilankite, anatase, rutile, brookite, and amorphous. It is preferable to adopt one of anatase and rutile.

Claims (5)

에폭시 아크릴레이트, 아크릴 모노머, 탈크, 티타늄 옥사이드, 광증감제를 포함하여 구성되는 전체 조성물의 100 중량부를 기준으로 상기 티타늄 옥사이드는 25~40 중량부, 상기 탈크는 10~20 중량부로 구성되는 것을 특징으로 하는 LED PCB용 잉크 조성물.
The titanium oxide is contained in an amount of 25 to 40 parts by weight and the talc is contained in an amount of 10 to 20 parts by weight based on 100 parts by weight of the total composition including epoxy acrylate, acrylic monomer, talc, titanium oxide and photosensitizer By weight based on the weight of the ink composition.
삭제delete 청구항 1에 있어서,
상기 에폭시 아크릴레이트는 15~30 중량부로 구성되는 것을 특징으로 하는 LED PCB용 잉크 조성물.
The method according to claim 1,
Wherein the epoxy acrylate is contained in an amount of 15 to 30 parts by weight.
청구항 3에 있어서,
상기 아크릴 모노머는 10~25 중량부로 구성되는 것을 특징으로 하는 LED PCB용 잉크 조성물.
The method of claim 3,
Wherein the acrylic monomer is 10 to 25 parts by weight.
청구항 4에 있어서,
상기 광증감제는 5~15 중량부로 구성되는 것을 특징으로 하는 LED PCB용 잉크 조성물.
The method of claim 4,
Wherein the photosensitizer is 5 to 15 parts by weight.
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