KR200321798Y1 - Wavelength converting film and display device using such film - Google Patents
Wavelength converting film and display device using such film Download PDFInfo
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- KR200321798Y1 KR200321798Y1 KR20-2003-0013459U KR20030013459U KR200321798Y1 KR 200321798 Y1 KR200321798 Y1 KR 200321798Y1 KR 20030013459 U KR20030013459 U KR 20030013459U KR 200321798 Y1 KR200321798 Y1 KR 200321798Y1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0026—Wavelength selective element, sheet or layer, e.g. filter or grating
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0073—Light emitting diode [LED]
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Abstract
본 고안의 파장 변환 필름은 투명한 플라스틱 필름층과 필름층에 증착된 형광층으로 이루어져, 입사된 빛의 파장과는 다른 출력 파장을 가지는 빛을 방출한다. 형광층은 확산제와 적어도 한 종류의 형광제를 포함하며, 바람직하게는 녹색 발광 특성을 가지는 형광제 및/또는 적색 발광 특성을 가지는 형광제를 포함할 수 있다. 특히, 입사된 빛의 파장이 430nm ~ 490 nm일 때, 적색 발광 특성을 가지는 형광제가 10~35 wt%, 녹색 발광 특성을 가지는 형광제가 10~25 wt%, 확산제가 40~80 wt%인 경우, 출력되는 빛의 CIE 색좌표는 x=0.05~0.3, y=0.05~0.3이 된다.The wavelength conversion film of the present invention consists of a transparent plastic film layer and a fluorescent layer deposited on the film layer, and emits light having an output wavelength different from the wavelength of incident light. The fluorescent layer includes a diffusing agent and at least one type of fluorescent agent, and may preferably include a fluorescent agent having a green light emitting property and / or a fluorescent agent having a red light emitting property. Particularly, when the incident light has a wavelength of 430 nm to 490 nm, 10 to 35 wt% of a phosphor having red light emission characteristics, 10 to 25 wt% of a phosphor having green light emission characteristics and 40 to 80 wt% of a diffusing agent are used. , The CIE color coordinates of the output light are x = 0.05 ~ 0.3, y = 0.05 ~ 0.3.
Description
본 고안은 파장 변환 필름에 관한 것으로서, 더욱 구체적으로는 형광제를 증착하여 입사되는 소정 파장의 빛을 입사 파장과는 다른 파장의 빛으로 변환시킬 수 있는 파장 변환 필름에 관한 것이다.The present invention relates to a wavelength conversion film, and more particularly, to a wavelength conversion film capable of converting light having a predetermined wavelength incident by depositing a fluorescent agent into light having a wavelength different from the incident wavelength.
일반적으로 김치 냉장고, 에어컨, 세탁기 등의 가전 제품에는 제품의 다양한 기능을 표시하기 위하여 설치되어 사용된다. 또한, 최근에는 가전 제품이 백색에서 벗어나 다양한 색상과 디자인으로 소비자들의 취향에 맞추어 개발되고 있어서, 가전 제품의 다양한 색상에 맞추어 표시 장치의 색상도 다양해질 필요가 생기게 되었다.In general, home appliances such as kimchi refrigerators, air conditioners, washing machines, and the like are installed and used to display various functions of products. In addition, in recent years, home appliances have been developed to meet the tastes of consumers with various colors and designs, away from white, so that the color of the display device needs to be varied according to various colors of home appliances.
그러나, 표시 장치의 광원으로 사용하는 발광 소자(LED)는 현재까지 특정 파장을 중심으로 소정 영역 대의 파장을 가진 빛을 방출하도록 되어 있어서 다양한파장의 빛을 방출하는데는 한계가 있었다. 따라서, LED의 파장대가 한정되어 있기 때문에 표시 장치 역시 한정된 색상으로만 표시할 수 밖에 없어서 가전 제품의 다양한 디자인을 제한하는 요인이 되었다.However, the light emitting device (LED) used as a light source of the display device has been limited to emit light of various wavelengths until now to emit light having a wavelength of a predetermined region around a specific wavelength. Therefore, since the wavelength band of the LED is limited, the display device also has to display only in a limited color, thereby limiting various designs of home appliances.
따라서, 본 고안의 목적은 소망하는 파장대의 빛을 방출하도록 입사하는 빛의 파장을 변환시켜 방출하는 파장 변환 필름 및 이를 사용하는 표시 장치를 제공하는 것이다.Accordingly, an object of the present invention is to provide a wavelength conversion film that converts and emits wavelengths of incident light to emit light of a desired wavelength band, and a display device using the same.
도 1은 본 고안의 실시예에 따른 파장 변환 필름을 개략적으로 도시한 도면이다.1 is a view schematically showing a wavelength conversion film according to an embodiment of the present invention.
전술한 목적 및 기타 목적을 달성하기 위하여, 본 고안에 따른 파장 변환 필름은In order to achieve the above and other objects, the wavelength conversion film according to the present invention
투명한 플라스틱 필름층과,With a transparent plastic film layer,
확산제와 적어도 한 종류의 형광제를 포함하며, 상기 플라스틱 필름층 위에 증착된 형광층A fluorescent layer comprising a diffusing agent and at least one fluorescent agent and deposited on the plastic film layer
을 포함하여, 입사하는 빛의 파장과는 다른 출력 파장을 가지는 빛을 방출한다.Including, to emit light having an output wavelength different from the wavelength of the incident light.
형광층은 바람직하게는 녹색 발광 특성을 가지는 형광제 및/또는 적색 발광 특성을 가지는 형광제를 포함할 수 있다. 특히, 입사된 빛의 파장이 430nm ~ 490 nm일 때, 적색 발광 특성을 가지는 형광제는 10~35 wt%, 녹색 발광 특성을 가지는 형광제는 10~25 wt%, 확산제는 40~80 wt%로 포함하여 출력되는 빛의 CIE 색좌표가 x=0.05~0.3, y=0.05~0.3이 되도록 할 수 있다.The fluorescent layer may preferably include a fluorescent agent having a green light emitting property and / or a fluorescent agent having a red light emitting property. Particularly, when the incident light has a wavelength of 430 nm to 490 nm, 10 to 35 wt% of a fluorescent agent having red light emission characteristics, 10 to 25 wt% of a fluorescent agent having green light emission characteristics, and a 40 to 80 wt% diffusing agent It can be included in% so that the CIE color coordinates of output light can be x = 0.05 ~ 0.3, y = 0.05 ~ 0.3.
본 고안의 다른 양태에 따른 표시 장치는A display device according to another aspect of the present invention
소정의 파장 영역의 빛을 방출하는 적어도 하나의 광원과,At least one light source emitting light in a predetermined wavelength range,
광원에서 방출하는 빛이 입사하여 상기 소정의 파장 영역과는 다른 파장 영역의 빛으로 출사하는 파장 변환 필름으로 구성된다.The light emitted from the light source is composed of a wavelength conversion film that is incident to the light of the wavelength region different from the predetermined wavelength region.
이하, 첨부된 도면을 참조하여 본 고안에 따른 실시예에 대하여 설명한다.Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention.
먼저, 도 1을 참조하면, 본 고안의 실시예에 따른 파장 변환 필름은 투명한 플라스틱 필름층(100)과, 필름층(100) 위에 증착된 형광층(110)으로 이루어진다.First, referring to FIG. 1, the wavelength conversion film according to the embodiment of the present invention includes a transparent plastic film layer 100 and a fluorescent layer 110 deposited on the film layer 100.
플라스틱 필름층(100)은 투명 PET(Polyethylene Terephthalate)를 사용하는 것이 바람직하나, 이에 한정되지 않으며 PVC 필름, 아크릴판 등 다른 투명 플라스틱 필름도 가능하다.The plastic film layer 100 preferably uses transparent polyethylene terephthalate (PET), but is not limited thereto. Other transparent plastic films such as a PVC film and an acrylic plate may also be used.
형광층(110)은 확산제와 적어도 한 종류의 형광제를 포함하며, 도 1에는 확산제(113)와 두 종류의 형광제(111, 112)가 포함된 것이 도시되어 있다.The fluorescent layer 110 includes a diffusing agent and at least one type of fluorescent agent, and FIG. 1 illustrates that the diffusing agent 113 and two types of fluorescent agents 111 and 112 are included.
확산제(113)는 바람직하게 실리카(SiO2)이며, 기타 다른 확산제도 사용할 수 있다. 확산제는 입자가 거친 표면으로 구성되어 빛의 산란을 유발하여 빛을 확산시키는 역할을 한다.The diffusion agent 113 is preferably silica (SiO 2 ), and other diffusion agents may also be used. The diffusing agent is composed of a coarse surface of particles, causing light scattering to diffuse light.
형광제(111, 112)는 입사되는 빛에너지를 흡수하여 그 일부를 다시 다른 파장대의 빛에너지로서 복사하는 작용을 한다. 본 실시예에서는 형광제가 적색 발광 특성을 가지는 형광제(111) 및 녹색 발광 특성을 가지는 형광제(112)로 이루어진다. 적색 발광 특성을 가지는 형광제(111)가 10~35 wt%, 녹색 발광 특성을 가지는형광제(112)가 10~25 wt%, 확산제(113)가 40~80 wt%인 경우, 입사되는 빛의 파장이 430nm ~ 490 nm일 때, 출력되는 빛은 빛의 CIE 색좌표가 x=0.05~0.3, y=0.05~0.3인 연한 하늘색이 된다. 또한, 확산제(113)가 입사되는 빛을 산란에 의하여 확산시킴으로써 필름은 통과한 빛은 입사 파장과는 다른 파장으로서 균일하게 나오게 된다.The fluorescent agents 111 and 112 absorb the light energy incident thereto and radiate part of the light energy as light energy of another wavelength band. In the present embodiment, the fluorescent agent includes a fluorescent agent 111 having a red light emitting property and a fluorescent agent 112 having a green light emitting property. When the fluorescent agent 111 having a red light emission characteristic is 10 to 35 wt%, the fluorescent agent 112 having a green light emission characteristic is 10 to 25 wt% and the diffusion agent 113 is 40 to 80 wt%, When the wavelength of the light is 430 nm to 490 nm, the output light becomes light sky blue with the CIE color coordinates of light x = 0.05 to 0.3 and y = 0.05 to 0.3. In addition, by diffusing the light incident by the diffusing agent 113 by scattering, the light passing through the film is uniformly emitted as a wavelength different from the incident wavelength.
본 실시예에서는 적색과 녹색의 발광 특성을 가지는 형광제를 사용하는 것을 설명하였지만 적색 또는 녹색 단독으로 사용하여 소망하는 색을 방출하는 파장 변환 필름을 만들 수 있다. 또한, 소망하는 파장대의 빛으로 변환시키기 위하여 기타 다른 형광제를 사용할 수도 있다.In the present embodiment, the use of a fluorescent agent having red and green light emitting characteristics has been described, but a red or green light alone can be used to make a wavelength conversion film emitting a desired color. In addition, other fluorescent agents may be used to convert the light into a desired wavelength band.
이러한 형광층(110)은 확산제와 형광제를 소정의 비율로 섞은 후 투명 플라스틱 필름층(100) 위에 증착하는 방법으로 형성한다.The fluorescent layer 110 is formed by mixing a diffusing agent and a fluorescent agent in a predetermined ratio and then depositing it on the transparent plastic film layer 100.
한편, 본 고안에 따른 표시 장치는 하나 이상의 광원과 위에서 설명한 파장 변환필름을 사용하여 형성할 수 있다. 이 때, 광원에서 나오는 빛의 파장대가 각각 다른 광원을 선택하는 경우, 광원의 파장 범위 및 사용하는 형광제의 종류 및 양을 적절히 조합하여 소망하는 색으로 용이하게 구현할 수 있다.On the other hand, the display device according to the present invention can be formed using one or more light sources and the wavelength conversion film described above. In this case, when a light source having different wavelength bands of light emitted from the light source is selected, the wavelength range of the light source and the type and amount of the fluorescent agent to be used may be appropriately combined to easily realize the desired color.
본 고안에 따른 파장 변환 필름은 특정 파장대의 빛을 방출하는 광원을 사용하여 소망하는 파장대의 빛을 변환시키는데 사용한다. 본 고안은 특히 필요로 하는 파장대의 광원이 없는 경우나, 이러한 광원은 있지만 구하기 힘들거나 가격이 비싸서 사용하기 어려운 경우에 특히 유용하다.The wavelength conversion film according to the present invention is used to convert light of a desired wavelength range by using a light source that emits light of a specific wavelength range. The present invention is particularly useful when there is no light source in the required wavelength range, or when there is such a light source but it is difficult to obtain or expensive.
본 고안의 파장 변환 필름 및 이를 사용하는 표시 장치는 휴대폰, 김치냉장고, 냉장고, 에어컨, 세탁기, 전기밥솥 등의 다양한 가전 제품의 표시 장치에 사용되어 특정 파장을 중심으로 소정 영역 대의 파장을 가진 빛을 방출하는 LED를 광원으로 사용하는 경우에도 소망하는 파장대의 빛으로 각종 정보를 표시할 수 있음으로써, 다양한 색상과 디자인의 가전 제품에 사용하기에 유용하다.The wavelength conversion film of the present invention and a display device using the same are used in display devices of various home appliances such as mobile phones, kimchi refrigerators, refrigerators, air conditioners, washing machines, rice cookers, and the like. Even when the emitting LED is used as a light source, various kinds of information can be displayed with light of a desired wavelength band, which is useful for home appliances of various colors and designs.
이상에서 본 고안의 기술적 특징을 특정한 실시예를 중심으로 설명하였으나, 본 고안이 속하는 기술분야에서 통상의 지식을 가진 사람이라면 본 고안에 따른 기술적 사상의 범위 내에서도 여러 가지 변형 및 수정을 가할 수 있음은 명백하다.Although the technical features of the present invention have been described with reference to specific embodiments, those skilled in the art to which the present invention belongs may make various changes and modifications within the scope of the technical idea according to the present invention. It is obvious.
Claims (8)
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20110075720A (en) * | 2009-12-28 | 2011-07-06 | 제일모직주식회사 | Diffusion plate of liquid crystal display |
WO2012161395A1 (en) * | 2011-05-24 | 2012-11-29 | Lg Innotek Co., Ltd. | Optical member, display device including the same, method for manufacturing the same |
WO2017135584A1 (en) * | 2016-02-04 | 2017-08-10 | 주식회사 효성 | Phosphor plate using light diffuser |
-
2003
- 2003-04-30 KR KR20-2003-0013459U patent/KR200321798Y1/en not_active IP Right Cessation
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20110075720A (en) * | 2009-12-28 | 2011-07-06 | 제일모직주식회사 | Diffusion plate of liquid crystal display |
WO2012161395A1 (en) * | 2011-05-24 | 2012-11-29 | Lg Innotek Co., Ltd. | Optical member, display device including the same, method for manufacturing the same |
KR101273099B1 (en) * | 2011-05-24 | 2013-06-13 | 엘지이노텍 주식회사 | Optical sheet, display device having the same and method of fabricating the same |
US10094967B2 (en) | 2011-05-24 | 2018-10-09 | Lg Innotek Co., Ltd. | Optical member having quantum dot and diffusing particle layer, display device including the same, method for manufacturing the same |
WO2017135584A1 (en) * | 2016-02-04 | 2017-08-10 | 주식회사 효성 | Phosphor plate using light diffuser |
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