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KR20180056580A - Liquid Crystal Display Device Comprising High Brightness Film - Google Patents

Liquid Crystal Display Device Comprising High Brightness Film Download PDF

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KR20180056580A
KR20180056580A KR1020170150102A KR20170150102A KR20180056580A KR 20180056580 A KR20180056580 A KR 20180056580A KR 1020170150102 A KR1020170150102 A KR 1020170150102A KR 20170150102 A KR20170150102 A KR 20170150102A KR 20180056580 A KR20180056580 A KR 20180056580A
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film
liquid crystal
crystal display
prism sheet
coating layer
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은종혁
김병남
류민영
안호진
강신비
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주식회사 효성
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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133504Diffusing, scattering, diffracting elements
    • G02F1/133507Films for enhancing the luminance
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
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    • C08J7/00Chemical treatment or coating of shaped articles made of macromolecular substances
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    • C09K11/00Luminescent, e.g. electroluminescent, chemiluminescent materials
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    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/02Diffusing elements; Afocal elements
    • G02B5/0205Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0226Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures having particles on the surface
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133603Direct backlight with LEDs
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133615Edge-illuminating devices, i.e. illuminating from the side
    • G02F2001/133507

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Abstract

본 발명은 고휘도 필름을 포함하는 액정표시장치에 관한 것이다.
이를 실현하기 위한 본 발명에 따른 고휘도 필름을 포함하는 액정표시장치는, 액정표시패널과 상기 액정표시패널의 저면에 설치되는 백라이트유닛으로 이루어지는 액정표시장치에 있어서, 상기 백라이트유닛은 기재필름의 일면에 LuAG계 형광체를 포함하는 코팅층이 형성됨과 아울러 상기 코팅층에 패턴부가 형성된 고휘도 필름을 포함하여 이루어진다.
The present invention relates to a liquid crystal display device including a high-luminance film.
In order to achieve the above object, the present invention provides a liquid crystal display device including a liquid crystal display panel and a backlight unit provided on a bottom surface of the liquid crystal display panel, wherein the backlight unit is provided on one surface of the base film And a high luminance film having a coating layer including a LuAG-based phosphor and a pattern portion formed on the coating layer.

Description

고휘도 필름을 포함하는 액정표시장치{Liquid Crystal Display Device Comprising High Brightness Film}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a liquid crystal display device including a high-

본 발명은 고휘도 필름을 포함하는 액정표시장치에 관한 것으로, 보다 상세하게는 액정표시장치에 고휘도 필름의 기재필름 상에 LuAG계 형광체를 포함하는 코팅층과 패턴부가 형성되어 색재현율 및 휘도를 향상시킬 수 있도록 하는 고휘도 필름을 포함하는 액정표시장치에 관한 것이다.The present invention relates to a liquid crystal display device including a high luminance film, and more particularly, to a liquid crystal display device in which a coating layer including a LuAG-based phosphor and a pattern portion are formed on a base film of a high luminance film to improve color reproducibility and luminance To a liquid crystal display device including a high-luminance film.

디스플레이 시장은 대면적, 고해상도 경쟁에서 색감 경쟁으로 진화하고 있다. 이러한 이유로 최근에는 우수한 색감을 갖는 디스플레이의 제조에 대한 경쟁이 대두되고 있다. The display market is evolving from large-area, high-resolution competition to color competition. For this reason, competition for the production of a display having excellent color is recently emerging.

차세대 디스플레이로 각광받는 OLED(Organic Light-emitting Diode, 유기발광다이오드)의 경우 색재현율 100%(NTSC 기준)까지 달성 가능하지만, 기존 LCD(Liquid Crystal Display)는 70%수준이므로 이를 개선할 필요가 있다. 최근 LCD에서의 색재현율 향상을 위해 양자점 (Quantum Dot)을 이용한 방법이 적용되고 있지만, 수분과 산소에 약한 양자점의 고유 특성 때문에 배리어 필름을 통한 밀봉이 필요한 단점이 있다.OLED (Organic Light-Emitting Diode), which is the next generation display, can achieve color recall rate of 100% (NTSC standard), but LCD (Liquid Crystal Display) is 70% . Recently, a quantum dot (Quantum Dot) method has been applied to improve the color reproducibility in an LCD, but it has a disadvantage in that sealing through a barrier film is necessary because of inherent characteristics of quantum dots weak in moisture and oxygen.

한편, LCD에서는 콘트라스트(contrast)를 증가시키기 위해 휘도향상필름이 적용되는데, 종래의 휘도향상필름은 화면밝기의 기준이 되는 휘도를 요구되는 조건까지 충족시키지 못하여 개선이 필요한 실정이다.On the other hand, in the LCD, a brightness enhancement film is applied in order to increase the contrast. However, the conventional brightness enhancement film can not satisfy the brightness required for the brightness of the screen to the required conditions and needs improvement.

한국공개특허 제10-2010-0018999호Korean Patent Publication No. 10-2010-0018999

본 발명은 상기한 사정을 감안하여 발명한 것으로, 액정표시장치의 고휘도 필름에 LuAG를 포함하는 코팅층이 형성됨과 아울러 상기 코팅층에 패턴부가 형성되어 색재현율과 휘도를 향상시킨 고휘도 필름을 포함하는 액정표시장치를 제공하는데 목적이 있다.The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a liquid crystal display device including a high luminance film having a coating layer including LuAG formed on a high luminance film of a liquid crystal display device and a pattern portion formed on the coating layer, Device. ≪ / RTI >

위와 같은 과제를 달성하기 위한 본 발명의 일 실시예에 따른 고휘도 필름을 포함하는 액정표시장치는, 액정표시패널과 상기 액정표시패널의 저면에 설치되는 백라이트유닛으로 이루어지는 액정표시장치에 있어서, 상기 백라이트유닛이 기재필름, LuAG계 형광체를 포함하며 상기 기재필름의 일면에 형성되는 코팅층, 및 상기 코팅층에서 형성되는 패턴부로 이루어지는 고휘도 필름을 포함하여 이루어지는 것을 특징으로 한다.According to an aspect of the present invention, there is provided a liquid crystal display device including a liquid crystal display panel and a backlight unit disposed on a bottom surface of the liquid crystal display panel, Wherein the unit comprises a base film, a coating layer including a LuAG-base phosphor and formed on one surface of the base film, and a patterned portion formed from the coating layer.

상기 백라이트유닛은 반사판, 도광판, 수직프리즘시트, 수평프리즘시트 그리고 상확산판이 차례로 적층되어 이루어지되, 수평프리즘시트와 상확산판 사이 또는 도광판과 수직프리즘시트 사이에 상기 고휘도 필름이 적층되어 이루어지는 것을 특징으로 한다.The backlight unit is characterized in that the high brightness film is laminated between a horizontal prism sheet and an upper diffuser plate or between a light guide plate and a vertical prism sheet, in which a reflective plate, a light guide plate, a vertical prism sheet, a horizontal prism sheet, .

상기 도광판의 양측에는 청색 LED가 설치되는 것을 특징으로 한다.And blue LEDs are installed on both sides of the light guide plate.

상기 백라이트유닛은 확산판, 수직프리즘시트, 수평프리즘시트 그리고 상확산판이 차례로 적층되어 이루어지되, 수평프리즘시트와 상확산판 사이 또는 확산판과 수직프리즘 사이에 상기 고휘도 필름이 적층되어 이루어지는 것을 특징으로 한다.Wherein the backlight unit is formed by sequentially stacking a diffusion plate, a vertical prism sheet, a horizontal prism sheet and an upper diffusion plate, wherein the high luminance film is laminated between a horizontal prism sheet and an upper diffusion plate or between a diffusion plate and a vertical prism do.

상기 확산판의 직하에는 청색 LED가 설치되는 것을 특징으로 한다.And a blue LED is provided directly under the diffusion plate.

본 발명에 따른 고휘도 필름에 있어서, 상기 LuAG계 형광체는 Lu3Al5O12:Ce3+, Tb3Al5O12:Ce3+, Lu2CaMg2Si3O12:Ce3+ 중 어느 하나를 포함할 수 있다.In the high brightness film according to the present invention, the LuAG-based fluorescent material may be any one of Lu 3 Al 5 O 12 : Ce 3+ , Tb 3 Al 5 O 12 : Ce 3+ , Lu 2 CaMg 2 Si 3 O 12 : Ce 3+ One can be included.

본 발명에 따른 고휘도 필름에 있어서, 상기 코팅층은 LuAG계 형광체 10 ~ 40wt%를 포함하는 코팅액이 상기 기재필름에 도포되어 형성될 수 있다.In the high brightness film according to the present invention, the coating layer may be formed by applying a coating liquid containing 10 to 40 wt% of LuAG-based fluorescent material on the base film.

본 발명에 따른 상기 코팅층은 10 ~ 100 ㎛의 두께를 갖도록 형성될 수 있다.The coating layer according to the present invention may be formed to have a thickness of 10 to 100 mu m.

본 발명에 따른 고휘도 필름에 있어서, 상기 패턴부는 삼각뿔형, 사각뿔형, 반구형, 및 비구(非球)형 중 어느 하나 또는 둘 이상의 형상을 포함할 수 있다.In the high brightness film according to the present invention, the pattern portion may include any one or two or more shapes of triangular, pyramidal, hemispherical, and non-spherical shapes.

본 발명에 따른 고휘도 필름에 있어서, 상기 패턴부의 적어도 일부는 단면이, "

Figure pat00001
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" 중 어느 하나 또는 둘 이상의 형상을 갖도록 형성될 수 있다.In the high-luminance film according to the present invention, at least a part of the pattern portion has a cross-
Figure pat00001
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상기 고휘도 필름은 일면에 PMMA와 대전방지제를 포함하는 백코팅(Back coating)층을 포함할 수 있다.The high-brightness film may include a back coating layer including PMMA and an antistatic agent on one side.

상기 PMMA는 0.1 내지 5 wt%를 포함할 수 있다.The PMMA may include 0.1 to 5 wt%.

상기 대전방지제는 0.01 내지 3 wt%를 포함할 수 있다.The antistatic agent may include 0.01 to 3 wt%.

한편, 본 발명의 다른 실시예에 따른 액정표시장치용 복합시트는 기재필름의 일면에 LuAG계 형광체를 포함하는 코팅층이 형성됨과 아울러 상기 코팅층에 패턴부가 형성된 고휘도 필름과, 상확산판, 수평프리즘시트, 수직프리즘시트 또는 확산판 중 하나 이상이 일체로 합지되어 하나의 복합시트로 형성될 수 있다.Meanwhile, the composite sheet for a liquid crystal display according to another embodiment of the present invention includes a base film, a high-brightness film on which a coating layer including a LuAG-based phosphor is formed on one surface of the base film, , A vertical prism sheet, or a diffusion plate may be integrally joined to form a single composite sheet.

상기 복합시트의 고휘도 필름은 일면에 PMMA와 대전방지제를 포함할 수 있다.The high-brightness film of the composite sheet may include PMMA and an antistatic agent on one side.

본 발명에 따른 고휘도 필름을 포함한 액정표시장치는 기존 액정표시장치 대비 우수한 색감을 구현할 수 있고, 양자점 필름을 적용한 액정표시장치 대비 우수한 내구성을 가지며, 배리어 필름이 필요하지 않으므로 상대적으로 얇은 두께의 색재현율이 향상된 액정표시장치를 제공할 수 있다.The liquid crystal display device including the high brightness film according to the present invention can realize excellent color quality compared to the conventional liquid crystal display device and has excellent durability as compared with a liquid crystal display device using a quantum dot film and does not require a barrier film, This improved liquid crystal display device can be provided.

도 1의 (a)~(d)는 본 발명에 따른 액정표시장치의 서로 다른 개략적 구현예를 나타내는 도면,
도 2는 본 발명의 액정표시장치에 적용된 고휘도 필름의 개략적인 단면도,
도 3은 본 발명에 따른 복합시트의 제조 공정 모식도이다.
1 (a) to 1 (d) are views showing different schematic embodiments of a liquid crystal display device according to the present invention,
2 is a schematic cross-sectional view of a high-luminance film applied to a liquid crystal display device of the present invention,
3 is a schematic view showing a manufacturing process of the composite sheet according to the present invention.

이와 같은 본 발명을 첨부도면을 참조하여 다음에서 상세하게 설명하기로 하며, 이하의 내용은 단지 예시하기 위한 것으로 본 발명이 이에 한정되는 것은 아니다.BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

도 1의 (a)~(d)는 본 발명에 따른 액정표시장치의 서로 다른 개략적 구현예를 나타내는 도면이다.1 (a) to 1 (d) are views showing different schematic embodiments of a liquid crystal display according to the present invention.

본 발명에 따른 액정표시장치는 액정표시패널(10)과 백라이트유닛(20)(30)으로 구성된다. A liquid crystal display device according to the present invention comprises a liquid crystal display panel (10) and backlight units (20, 30).

본 발명의 일 실시예에 따른 백라이트유닛(20)은 도 1의 (a)(b)에 도시된 바와 같이, 반사판(25), 도광판(24), 수직프리즘시트(23), 수평프리즘시트(22) 그리고 상확산판(21)이 차례로 적층되어 이루어지되, 수평프리즘시트(22)와 상확산판(21) 사이 또는 도광판(24)과 수직프리즘시트(23) 사이에 상기 고휘도 필름(100)이 적층될 수 있다. 도 1의 (a)(b)에 도시된 실시예는 도광판(24)의 측면에 광원이 설치되어 LED 에지형 백라이트를 구성할 수 있다. The backlight unit 20 according to an embodiment of the present invention includes a reflection plate 25, a light guide plate 24, a vertical prism sheet 23, a horizontal prism sheet (not shown) The high brightness film 100 is formed between the horizontal prism sheet 22 and the upper diffuser plate 21 or between the light guide plate 24 and the vertical prism sheet 23, Can be stacked. In the embodiment shown in Figs. 1 (a) and (b), a light source is provided on a side surface of the light guide plate 24 to constitute an LED edge type backlight.

또한 본 발명의 다른 실시예에 따른 백라이트유닛(30)은 도 1의 (c)(d)에 도시된 바와 같이, 확산판(34), 수직프리즘시트(33), 수평프리즘시트(32) 그리고 상확산판(31)이 차례로 적층되어 이루어지되, 수평프리즘시트(32)와 상확산판(31) 사이 또는 확산판(34)과 수직프리즘시트(33) 사이에 상기 고휘도 필름(100)이 적층될 수 있다. 도 1의 (c)(d)에 도시된 실시예는 확산판(34)의 하부에 광원이 설치되어 LED 직하형 백라이트를 구성할 수 있다.The backlight unit 30 according to another embodiment of the present invention includes a diffusion plate 34, a vertical prism sheet 33, a horizontal prism sheet 32, The high brightness film 100 is laminated between the horizontal prism sheet 32 and the upper diffuser plate 31 or between the diffuser plate 34 and the vertical prism sheet 33, . In the embodiment shown in FIGS. 1 (c) and (d), a light source is provided at a lower portion of the diffusion plate 34 to constitute a direct-LED type backlight.

도 1의 (a)~(d)에 도시된 백라이트(20)(30)에는 청색 LED를 광원으로 적용함으로써 바람직하게 휘도를 향상시킬 수 있다.In the backlights 20 and 30 shown in FIGS. 1 (a) to 1 (d), the brightness can be preferably improved by applying a blue LED as a light source.

도 2는 본 발명의 실시예에 따른 고휘도 필름의 개략적인 단면도이다. 도시된 바와 같이, 본 발명의 실시예에 따른 고휘도 필름은 기재필름(11)을 포함하며, 기재필름의 일면에 LuAG(Lutetium aluminum garnet)계 형광체(12)가 포함되는 코팅층(13)이 형성된다. 그리고 이 코팅층(13)에는 패턴부가 형성된다.2 is a schematic cross-sectional view of a high-luminance film according to an embodiment of the present invention. As shown, the high-brightness film according to the embodiment of the present invention includes a base film 11, and a coating layer 13 containing LuAG (lutetium aluminum garnet) -based phosphor 12 is formed on one surface of the base film . A pattern portion is formed on the coating layer 13.

기재필름(11)은 예컨대 폴리에틸렌테레프탈레이트(polyethylene terephthalate; PET), 트리아세틸셀룰로스(triacetylcellulose; TAC), 폴리아미드(polyimide; PI), 또는 아크릴(acryl) 계열의 물질로 이루어질 수 있다. 다만, 이러한 물질로 한정되는 것은 아니다.The base film 11 may be made of a material such as polyethylene terephthalate (PET), triacetylcellulose (TAC), polyimide (PI), or acryl. However, the present invention is not limited to these materials.

기재필름(11)의 일면에 형성되는 코팅층(13)은 LuAG계 형광체(12)를 포함한다. LuAG계 형광체는 Lu3Al5O12:Ce3+, Tb3Al5O12:Ce3+, Lu2CaMg2Si3O12:Ce3+ 중 어느 하나를 포함할 수 있다.The coating layer 13 formed on one surface of the base film 11 includes a LuAG-base phosphor 12. [ The LuAG-based phosphor may include any one of Lu 3 Al 5 O 12 : Ce 3+ , Tb 3 Al 5 O 12 : Ce 3+ , and Lu 2 CaMg 2 Si 3 O 12 : Ce 3+ .

코팅층(13)은 LuAG계 형광체(12)를 포함하는 코팅액이 기재필름의 일면에 도포됨으로써 형성될 수 있다.The coating layer 13 may be formed by applying a coating liquid containing the LuAG-based fluorescent material 12 to one surface of the base film.

코팅액은 LuAG계 형광체 10 내지 40wt%를 포함하도록 제조될 수 있다. 코팅액에 포함되는 LuAG계 형광체가 10 wt% 미만이면 휘도 향상 효과가 미흡하며, 40 wt%를 초과하면 색재현성이 저하되는 문제가 있다.The coating liquid may be prepared so as to contain 10 to 40 wt% of the LuAG-based phosphor. When the LuAG-based fluorescent material contained in the coating liquid is less than 10 wt%, the luminance improving effect is insufficient. When the LuAG-based fluorescent material is more than 40 wt%, the color reproducibility is deteriorated.

코팅층(13)이 형성된 기재필름(11)은 패턴 형성 공정을 거치면서 코팅층의 일부 또는 전체에서 패턴부가 형성된다. 패턴부는, 예컨대 삼각뿔형, 사각뿔형, 반구형, 및 비구(非球)형 중 어느 하나 또는 둘 이상의 형상을 포함할 수 있다.The base film 11 on which the coating layer 13 is formed is formed with a pattern portion in a part or the whole of the coating layer through the pattern forming process. The pattern portion may include any one or two or more shapes of, for example, pyramidal, quadrangular, hemispherical, and non-spherical shapes.

또는 휘도가 더 향상되도록 하기 위하여, 패턴부의 적어도 일부에서 단면이, "

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" 중 어느 하나 또는 둘 이상의 형상을 갖도록 형성될 수도 있다.Or at least a part of the pattern portion has a cross section of "
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도 2에서는 단면이 "

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"형상인 패턴부를 갖는 고휘도 필름의 예가 제시되고 있다.In Fig. 2,
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An example of a high-luminance film having a pattern portion that is " shaped "

본 발명의 실시예에 따른 고휘도 필름의 제조방법을 설명하면 다음과 같다.A method of manufacturing a high-luminance film according to an embodiment of the present invention will now be described.

먼저 코팅액을 제조하기 위하여, LuAG계 형광체(예컨대 Tb3Al5O12:Ce3+ 20wt%)를 고분자 매트릭스(Matrix)에 넣어 일정시간(예컨대 60분) 교반시킨다. 여기서 고분자 매트릭스는 Nc chem.의 NSP53, NSP52 중 NSP53이 사용될 수 있다. 교반이 끝난 형광체 및 매트릭스 혼합물에 광개시제(photo initiator) 2종류를 첨가할 수 있다. 광개시제로는 IG184, IG907, TPO, CP4 중 2종이 선택(예컨대 IG184, TPO (5:5)5%)될 수 있다.First, in order to prepare a coating solution, a LuAG-based phosphor (for example, Tb 3 Al 5 O 12 : Ce 3+ 20 wt%) is put into a polymer matrix and stirred for a predetermined time (for example, 60 minutes). Here, NSP53 of Nc chem. And NSP53 of NSP52 can be used as the polymer matrix. Two types of photo initiators may be added to the stirred phosphor and matrix mixture. Two types of IG184, IG907, TPO and CP4 can be selected as the photoinitiator (for example, IG184, TPO (5: 5) 5%).

이렇게 제조된 코팅액을 기재필름(예컨대 PET 필름)의 일면에 도포하여 코팅층을 형성할 수 있다. 이때 코팅층은 10 ~ 100 ㎛의 두께를 갖도록 형성될 수 있다. 코팅층 두께가 10㎛ 미만이면 LuAG계 형광체가 돌출되어 외관 불량을 야기할 수 있고, 100㎛를 초과하면 코팅시 컬(Curl) 특성이 악화되어 고분자 매트릭스로 적용 가능한 수지가 제한되는 문제가 있다. 아래 [표1]은 코팅층의 두께에 따른 컬(curl) 데이터를 나타낸 것이다.The coating solution thus prepared may be applied to one surface of a base film (e.g., a PET film) to form a coating layer. The coating layer may be formed to have a thickness of 10 to 100 mu m. If the thickness of the coating layer is less than 10 탆, the LuAG-based phosphor may protrude and cause appearance defects. If the thickness exceeds 100 탆, the curl characteristic may deteriorate during coating, which limits the resin applicable as a polymer matrix. Table 1 below shows the curl data according to the thickness of the coating layer.

코팅층의 두께에 따른 컬(curl)Curl according to the thickness of the coating layer. 코팅 두께 [㎛]Coating Thickness [탆] 55 1010 3030 5050 7070 100100 120120 150150 Curl [㎜]Curl [mm] 00 33 44 77 1010 1818 2222 2525

코팅층을 형성하도록 기재필름에 코팅액을 도포한 후 그 위에 음각 패턴을 적층하고 UV램프를 이용하여 예비 경화한 후 음각 패턴을 제거함으로써 코팅층에서 패턴부가 형성될 수 있다. 패턴부가 형성된 코팅층(13)이 경화되도록 코팅층(13)에 무전극 램프를 이용하여 일정시간(예컨대 약 5초간) 조사할 수 있으며, 이때 조사되는 광량은 1000mj이하일 수 있다.A coating liquid may be applied to a base film to form a coating layer, then an engraved pattern may be laminated thereon, pre-cured using a UV lamp, and then patterned in the coating layer by removing the engraved pattern. The coating layer 13 may be irradiated with a non-electrode lamp for a predetermined time (for example, about 5 seconds) so that the coating layer 13 having the pattern portion is cured.

상기한 과정을 포함하는 제조방법에 의해 본 실시예에 따른 고휘도 필름이 제조될 수 있다.The high-luminance film according to the present embodiment can be manufactured by the manufacturing method including the above-described process.

한편, 아래의 [표 2]는 본 발명의 실시예에 따른 고휘도 필름이 적용된 LCD TV의 휘도 및 색재현성을 종래의 이중 휘도 향상 필름(Double Bright Enhancement Film; DBEF)이 적용된 LED TV 및 QD TV의 그것과 비교한 실험 데이터를 나타낸 것이다.Table 2 below shows the luminance and color reproducibility of an LCD TV to which a high luminance film according to an embodiment of the present invention is applied by comparing the luminance and color reproducibility of an LED TV and a QD TV to which a conventional double brightness enhancement film (DBEF) The experimental data are compared with those.

LuAG계 형광체의 함량이 10 ~ 40 wt% 일 때의 실험데이터Experimental data when the content of LuAG-based phosphor is 10 to 40 wt% 구분division Ref. DBEFRef. DBEF
(LED TV)(LED TV)
Ref. DBEFRef. DBEF
(QD TV)(QD TV)
LuAG Luag
함량 wt%Content wt%
LuAG 10LuAG 10 LuAG 20LuAG 20 LuAG 30LuAG 30 LuAG 40LuAG 40
휘도 [nit]Luminance [nit] 430430 450450 휘도 [nit]Luminance [nit] 430430 480480 510510 540540 XX 0.27300.2730 0.25930.2593 XX 0.2350 0.2350 0.2550 0.2550 0.26300.2630 0.27500.2750 YY 0.29250.2925 0.29110.2911 YY 0.2577 0.2577 0.28770.2877 0.29030.2903 0.29350.2935 색재현성[%] Color Reproduction [%] 81.681.6 100100 색재현성[%] Color Reproduction [%] 81.381.3 82.682.6 82.382.3 81.381.3

그리고, 아래의 [표 3]은 본 발명의 실시예에 따른 고휘도 필름과 비교하기 위한 실험데이터로서, 기재필름의 코팅층에 LuAG계 형광체의 함량이 10wt% 미만, 그리고 40wt% 초과의 휘도 필름이 적용된 LCD TV의 휘도 및 색재현성을 종래의 이중 휘도 향상 필름(Double Bright Enhancement Film; DBEF)이 적용된 LED TV 및 QD TV의 그것과 비교한 실험 데이터를 나타낸 것이다.The following Table 3 shows experimental data for comparison with the high luminance film according to the embodiment of the present invention, in which a luminance film having a LuAG-based phosphor content of less than 10 wt% and a luminance film of more than 40 wt% Experimental data comparing the luminance and color reproducibility of LCD TV with those of LED TV and QD TV using conventional double brightness enhancement film (DBEF) is shown.

LuAG계 형광체의 함량이 5wt% 및 50 wt%일 때의 실험데이터Experimental data when the content of LuAG-based phosphor is 5 wt% and 50 wt% 구분division Ref. DBEFRef. DBEF
(LED TV)(LED TV)
Ref. DBEFRef. DBEF
(QD TV)(QD TV)
LuAG Luag
함량 wt%Content wt%
LuAG 5LuAG 5 LuAG 50 LuAG 5 0
휘도 [nit]Luminance [nit] 430430 450450 휘도 [nit]Luminance [nit] 230230 500500 XX 0.27300.2730 0.25930.2593 XX 0.21500.2150 0.30500.3050 YY 0.29250.2925 0.29110.2911 YY 0.2277 0.2277 0.31200.3120 색재현성[%] Color Reproduction [%] 81.681.6 100100 색재현성[%] Color Reproduction [%] 79.879.8 75.075.0

표 2 및 표 3에 나타난 휘도 데이터는 일본 Topcon사의 BM-7FAST 색채휘도계로 측정한 것이다.The luminance data shown in Table 2 and Table 3 were measured with BM-7FAST color luminance meter, Topcon, Japan.

(백코팅)(Back coating)

한편, 본 발명의 액정표시장치에 적용되는, 기재필름에 LuAG계 형광체를 포함하는 코팅층이 형성됨과 아울러 상기 코팅층에 패턴부가 형성된 고휘도 필름에는 백코팅(Back coating)을 더 포함할 수 있다. On the other hand, the backlight coating may further include a back coating, which is applied to the liquid crystal display device of the present invention, in which a coating layer including a LuAG-based phosphor is formed on a base film and a pattern portion is formed on the coating layer.

상기 백코팅에 포함된 입자에 의해 고휘도 필름 이면에 요철을 부여해 다른 광학시트와의 블로킹을 방지하여 작업성을 향상시키고, 공정상 마찰로 인해 발생하는 정전기를 방지하는 효과가 있다. By the particles included in the back coating, irregularities are provided on the back surface of the high luminance film to prevent blocking with other optical sheets to improve workability and to prevent static electricity caused by friction in the process.

백코팅에 사용되는 코팅 조액은 우레탄 아크릴레이트 올리고머, 단관능 모노머, 광개시제, 레벨링제, 분산제 및 PMMA 입자 등으로 이루어 진다.The coating solution used for the back coating is composed of urethane acrylate oligomer, monofunctional monomer, photoinitiator, leveling agent, dispersant, and PMMA particles.

상기 PMMA 입자는 전체 백코팅에 대해 0.1 내지 5 wt% 함유하는 것이 바람직하다. 0.1wt% 미만인 경우 고휘도 필름의 이면에 충분한 요철을 형성하지 못하고, 5wt% 초과인 경우 높은 헤이즈에 의한 투과광 손실이 발생하게 되므로 PMMA 입자의 함량을 조절하여 백코팅층의 헤이즈를 1 내지 20%로 조절하는 것이 바람직하다. The PMMA particles are preferably contained in an amount of 0.1 to 5 wt% with respect to the entire back coating. When the amount is less than 0.1 wt%, sufficient irregularities can not be formed on the back surface of the high-brightness film. When the amount exceeds 5 wt%, the transmitted light loss due to the high haze occurs. Therefore, the haze of the back coating layer is controlled to 1 to 20% .

또한, 상기 백코팅에는 필요에 따라 대전 방지제(Anti-static)를 첨가제로 추가할 수 있다. 상기 대전 방지제를 첨가함에 따라 표면 저항 조절이 가능하며, 대전 방지제는 백코팅층 전체 대비 0.01 내지 3wt% 포함되는 것이 바람직하다. 대전방지제의 함량이 0.01 wt% 미만인 경우 정전기 방지를 위한 표면 저항이 부족하고, 3wt% 초과인 경우는 필요 이상의 과량을 첨가하는 결과를 낳게 되는바, 대전 방지제를 0.01 내지 3wt% 첨가하여 표면 저항이 1010~1012 Ohm/□ 범위가 되도록 조절하는 것이 바람직하다. 표면 저항이 1010~1012 Ohm/□ 인 경우, 필름의 동적상태에서의 장해방지가 가능하고, 대전 후 대전현상이 즉시 감쇠하는 효과가 있기 때문이다.An anti-static additive may be added to the back coat as needed. The surface resistance can be controlled by adding the antistatic agent. The antistatic agent is preferably contained in an amount of 0.01 to 3 wt% based on the whole amount of the back coat layer. When the content of the antistatic agent is less than 0.01 wt%, the surface resistance for preventing static electricity is insufficient. When the antistatic agent content is more than 3 wt%, an excessive amount of the antistatic agent is added excessively. As a result, an antistatic agent is added in an amount of 0.01 to 3 wt% 10 10 to 10 12 Ohm / □. When the surface resistance is in the range of 10 10 to 10 12 Ohm / □, it is possible to prevent the film from being damaged in the dynamic state, and there is an effect that the charging phenomenon immediately after charging is immediately attenuated.

백코팅은 bar coating, slot-die coating 등의 방식을 사용할 수 있다. Back coating can be done by bar coating or slot-die coating.

상기 백코팅시 코팅층의 두께는 1 내지 10μm 가 바람직하다. 두께가 1 μm 미만인 경우 고휘도 필름의 이면에 충분한 요철이 형성되지 않아 블로킹 방지가 어렵고, 10 μm 초과인 경우 높은 헤이즈(haze)에 의한 투과광 손실 문제가 발생한다. The thickness of the coating layer upon back coating is preferably 1 to 10 mu m. When the thickness is less than 1 占 퐉, sufficient irregularities are not formed on the back surface of the high-luminance film, so prevention of blocking is difficult, and when the thickness exceeds 10 占 퐉, a problem of transmission light loss due to high haze occurs.

(복합시트화)(Composite sheet)

또한, 본 발명에 따른 액정표시장치를 구성하는, 기재필름에 LuAG계 형광체를 포함하는 코팅층이 형성됨과 아울러 상기 코팅층에 패턴부가 형성된 고휘도 필름을 포함하는 여러 장의 필름을 하나의 복합시트 형태로 점착할 수 있다. 즉, 상기 고휘도 필름과 다른 광학 필름들을 접착제로 라미네이션(lamination)하여 한 장의 복합시트로 제작하여 액정표시장치에 적용이 가능하다. Further, a plurality of films including a high luminance film having a coating layer including a LuAG-based phosphor formed on a base film and forming a pattern on the coating layer constituting the liquid crystal display device according to the present invention may be adhered in the form of a composite sheet . That is, the high-brightness film and other optical films may be laminated with an adhesive to form a composite sheet, which is applicable to a liquid crystal display device.

상기 다른 광학 필름들로는 고휘도 필름(100)을 포함하여 백라이트유닛(20)(30)을 구성하는 상확산판(21)(31), 수평프리즘시트(22)(32), 수직프리즘시트(23)(33) 및 확산판(34) 중에서 적어도 어느 하나 이상 선택하여 사용할 수 있다. The other optical films include the upper diffuser plates 21 and 31, the horizontal prism sheets 22 and 32 and the vertical prism sheet 23 which constitute the backlight unit 20 and 30 including the high luminance film 100, At least one of the diffusion plate 33 and the diffusion plate 34 may be selected and used.

상기 접착제는 투명접착제(OCA, Optical Clear Adhesive)를 사용하는 것이 바람직하며, direct bonding(full lamination) 또는 air gap bonding 방식으로 접착할 수 있다. 특히, direct bonding 방식은 air gap bonding 방식에 비해 수율은 낮지만 광학 특성이 우수해 시인성은 높고 전력 소모는 적은 장점이 있다. The adhesive preferably uses a transparent adhesive (OCA), and can be bonded by direct bonding (full lamination) or air gap bonding. In particular, the direct bonding method has a lower yield compared to the air gap bonding method, but has the advantage of high visibility due to excellent optical characteristics and low power consumption.

상기 라미네이션은 도 3과 같은 공정에 의해 이루어진다. 제1 공급롤러(R1)를 통해 접착하고자 하는 광학필름(F1)이 공급되고, 제2 공급롤러(R2)를 통해 고휘도 필름(F2)이 공급된다. 상기 광학필름(F1)은 접착제 도포 롤러(R3)를 통과하며 광학필름의 적어도 한 면에 접착제(A)가 도포된 후 합지롤러(R4)를 거쳐 고휘도 필름(F2)과 합지되어 복합시트(F3)가 완성된다. The lamination is performed by the same process as shown in FIG. The optical film F1 to be bonded is fed through the first feeding roller R1 and the high luminance film F2 is fed through the second feeding roller R2. The optical film F1 passes through the adhesive application roller R3 and is coated on at least one surface of the optical film with an adhesive A and is then joined to the high-luminance film F2 through the jersey roller R4 to form a composite sheet F3 ) Is completed.

한편, 광학필름이 2가지 이상 선택되어 사용되는 경우에는 고휘도 필름과 1가지 광학필름을 상기 공정에 의해 먼저 합지한 후, 나머지 1가지 광학필름을 상기 공정을 반복하여 순차적으로 합지 시키는 과정을 거쳐 복합시트를 형성한다. When two or more optical films are selected and used, a high-luminance film and one optical film are first laminated by the above process, and then the remaining one optical film is sequentially laminated by repeating the above- To form a sheet.

상기 복합시트는 고휘도 필름과 광학필름 사이에 접착제를 도포하여 형성할 수 있다. 예컨대, 광학필름 중 프리즘시트만 사용되는 경우 고휘도 필름과 프리즘시트 사이에 접착제를 도포하여 복합시트를 형성할 수 있다. 광학필름 중 프리즘시트 및 확산판이 사용되는 경우에는 고휘도 필름과 프리즘 시트 사이, 상기 프리즘시트와 확산판 사이에 각각 접착제를 도포하여 복합시트를 형성할 수 있다.The composite sheet can be formed by applying an adhesive between the high-luminance film and the optical film. For example, when only a prism sheet is used in the optical film, a composite sheet can be formed by applying an adhesive between the high-luminance film and the prism sheet. When a prism sheet and a diffuser plate are used in the optical film, a composite sheet can be formed by applying an adhesive between the high-brightness film and the prism sheet, or between the prism sheet and the diffuser plate.

이상 본 발명에 따른 실시예에 관하여 자세히 설명하였다. 다만 상기 실시예는 본 발명의 바람직한 실시예를 나타내는 것으로 본 발명은 상기한 실시예로만 한정되지 않는다. 관련 기술 분야에서 통상의 지식을 가지는 자라면 상기 실시예로부터 다양한 변형이나 균등한 다른 실시예가 가능하다는 점을 이해할 것이다.The embodiments according to the present invention have been described in detail above. It should be noted that the above-described embodiments illustrate preferred embodiments of the present invention and the present invention is not limited to the above-described embodiments. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

10 : 액정표시패널, 11 : 상편광판,
12 : 제1점착층, 13 : 액정셀,
14 : 제2점착층, 15 : 하편광판,
20 : 백라이트유닛, 21 : 상확산판,
22 : 수평프리즘시트, 23 : 수직프리즘시트,
24 : 도광판, 25 : 반사판,
30 : 백라이트유닛, 31 : 상확산판,
32 : 수평프리즘시트, 33 : 수직프리즘시트,
34 : 확산판, 100 : 고휘도 필름,
110 : 기재필름, 120 : LuAG계 형광체,
130 : 패턴부.
10: liquid crystal display panel, 11: upper polarizer plate,
12: first adhesive layer, 13: liquid crystal cell,
14: second adhesive layer, 15: lower polarizer plate,
20: backlight unit, 21: phase diffusion plate,
22: Horizontal prism sheet, 23: Vertical prism sheet,
24: light guide plate, 25: reflector plate,
30: backlight unit, 31: phase diffusion plate,
32: Horizontal prism sheet, 33: Vertical prism sheet,
34: diffusion plate, 100: high luminance film,
110: base film, 120: LuAG-base phosphor,
130: pattern part.

Claims (15)

액정표시패널과 상기 액정표시패널의 저면에 설치되는 백라이트유닛으로 이루어지는 액정표시장치에 있어서, 상기 백라이트유닛은 기재필름의 일면에 LuAG계 형광체를 포함하는 코팅층이 형성됨과 아울러 상기 코팅층에 패턴부가 형성된 고휘도 필름을 포함하여 이루어지는 것을 특징으로 하는 고휘도 필름을 포함하는 액정표시장치.A liquid crystal display comprising a liquid crystal display panel and a backlight unit provided on a bottom surface of the liquid crystal display panel, wherein the backlight unit includes a base film on which a coating layer including a LuAG-base phosphor is formed, Wherein the liquid crystal display device comprises a high-luminance film. 제1항에 있어서,
상기 백라이트유닛은 반사판, 도광판, 수직프리즘시트, 수평프리즘시트 그리고 상확산판이 차례로 적층되어 이루어지되, 수평프리즘시트와 상확산판 사이 또는 도광판과 수직프리즘시트 사이에 상기 고휘도 필름이 적층되어 이루어지는 것을 특징으로 하는 고휘도 필름을 포함하는 액정표시장치.
The method according to claim 1,
The backlight unit is characterized in that the high brightness film is laminated between a horizontal prism sheet and an upper diffuser plate or between a light guide plate and a vertical prism sheet, in which a reflective plate, a light guide plate, a vertical prism sheet, a horizontal prism sheet, And a high luminance film.
제2항에 있어서,
상기 도광판의 양측에는 청색 LED가 설치되는 것을 특징으로 하는 고휘도 필름을 포함하는 액정표시장치.
3. The method of claim 2,
And blue LEDs are provided on both sides of the light guide plate.
제1항에 있어서,
상기 백라이트유닛은 확산판, 수직프리즘시트, 수평프리즘시트 그리고 상확산판이 차례로 적층되어 이루어지되, 수평프리즘시트와 상확산판 사이 또는 확산판과 수직프리즘시트판 사이에 상기 고휘도 필름이 적층되어 이루어지는 것을 특징으로 하는 고휘도 필름을 포함하는 액정표시장치.
The method according to claim 1,
The backlight unit may include a diffusion plate, a vertical prism sheet, a horizontal prism sheet, and an upper diffusion plate stacked in this order, wherein the high luminance film is laminated between the horizontal prism sheet and the upper diffusion plate or between the diffusion plate and the vertical prism sheet Wherein the liquid crystal display device comprises a high-luminance film.
제4항에 있어서,
상기 확산판의 직하에는 청색 LED가 설치되는 것을 특징으로 하는 고휘도 필름을 포함하는 액정표시장치.
5. The method of claim 4,
And a blue LED is provided directly under the diffusion plate.
제1항 내지 제5항에 있어서,
상기 LuAG계 형광체는 Lu3Al5O12:Ce3+, Tb3Al5O12:Ce3+, Lu2CaMg2Si3O12:Ce3+ 중 어느 하나를 포함하는 것을 특징으로 하는 고휘도 필름을 포함하는 액정표시장치.
6. The method according to any one of claims 1 to 5,
Wherein the LuAG-based phosphor comprises any one of Lu 3 Al 5 O 12 : Ce 3+ , Tb 3 Al 5 O 12 : Ce 3+ , Lu 2 CaMg 2 Si 3 O 12 : Ce 3+ , A liquid crystal display comprising a film.
제6항에 있어서,
상기 코팅층은 LuAG계 형광체 10 ~ 40wt%를 포함하는 코팅액이 상기 기재필름에 도포되어 형성되는 것을 특징으로 하는 고휘도 필름을 포함하는 액정표시장치.
The method according to claim 6,
Wherein the coating layer is formed by applying a coating liquid containing 10 to 40 wt% of LuAG-based fluorescent material on the base film.
제6항에 있어서,
상기 코팅층은 10 ~ 100 ㎛의 두께를 갖도록 형성되는 것을 특징으로 하는 고휘도 필름을 포함하는 액정표시장치.
The method according to claim 6,
Wherein the coating layer is formed to have a thickness of 10 to 100 占 퐉.
제6항에 있어서,
상기 패턴부는 삼각뿔형, 사각뿔형, 반구형, 및 비구(非球)형 중 어느 하나 또는 둘 이상의 형상을 포함하는 것을 특징으로 하는 고휘도 필름을 포함하는 액정표시장치.
The method according to claim 6,
Wherein the pattern portion includes at least one of a triangular pyramid, a quadrangular pyramid, a hemispherical, and a non-spherical shape.
제9항에 있어서,
상기 패턴부는 단면상, "
Figure pat00016
", "
Figure pat00017
", "
Figure pat00018
", "
Figure pat00019
", "
Figure pat00020
", "
Figure pat00021
", 및 "
Figure pat00022
" 중 어느 하나의 형상을 포함하는 것을 특징으로 하는 고휘도 필름을 포함하는 액정표시장치.
10. The method of claim 9,
The pattern portion has a cross-
Figure pat00016
","
Figure pat00017
","
Figure pat00018
","
Figure pat00019
","
Figure pat00020
","
Figure pat00021
&Quot; and "
Figure pat00022
≪ / RTI > wherein the liquid crystal display device comprises any one of the following.
제1항에 있어서,
상기 고휘도 필름은 일면에 PMMA와 대전방지제를 포함하는 백코팅(Back coating)층을 포함하는 것을 특징으로 하는 고휘도 필름을 포함하는 액정표시장치.
The method according to claim 1,
Wherein the high brightness film comprises a back coating layer including PMMA and an antistatic agent on one side thereof.
제11항에 있어서,
상기 PMMA는 0.1 내지 5 wt%를 포함하는 것을 특징으로 하는 고휘도 필름을 포함하는 액정표시장치.
12. The method of claim 11,
Wherein the PMMA is contained in an amount of 0.1 to 5 wt%.
제11항에 있어서,
상기 대전방지제는 0.01 내지 3 wt%를 포함하는 것을 특징으로 하는 고휘도 필름을 포함하는 액정표시장치.
12. The method of claim 11,
Wherein the antistatic agent comprises 0.01 to 3 wt% of the antistatic agent.
기재필름의 일면에 LuAG계 형광체를 포함하는 코팅층이 형성됨과 아울러 상기 코팅층에 패턴부가 형성된 고휘도 필름과, 상확산판, 수평프리즘시트, 수직프리즘시트 또는 확산판 중 하나 이상이 일체로 합지되어 하나의 복합시트로 형성된 것을 특징으로 하는 액정표시장치용 복합시트.A high brightness film in which a coating layer including a LuAG-based phosphor is formed on one surface of a base film and a pattern portion is formed on the coating layer; and at least one of an upper diffusion plate, a horizontal prism sheet, a vertical prism sheet, Wherein the composite sheet is formed of a composite sheet. 제14항에 있어서,
상기 고휘도 필름은 일면에 PMMA와 대전방지제를 포함하는 백코팅(Back coating)층을 포함하는 것을 특징으로 하는 액정표시장치용 복합시트.
15. The method of claim 14,
Wherein the high brightness film comprises a back coating layer including PMMA and an antistatic agent on one side thereof.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020258784A1 (en) * 2019-06-27 2020-12-30 惠州市华星光电技术有限公司 Diffusion plate and manufacturing method therefor, backlight module and display device
CN115616814A (en) * 2022-08-23 2023-01-17 广州讯晟科技有限公司 A high color gamut backlight module and TV

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020258784A1 (en) * 2019-06-27 2020-12-30 惠州市华星光电技术有限公司 Diffusion plate and manufacturing method therefor, backlight module and display device
CN115616814A (en) * 2022-08-23 2023-01-17 广州讯晟科技有限公司 A high color gamut backlight module and TV

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