KR100514065B1 - Backlight Assembly for Liquid Crystal Display - Google Patents

Backlight Assembly for Liquid Crystal Display Download PDF

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Publication number
KR100514065B1
KR100514065B1 KR1019970051483A KR19970051483A KR100514065B1 KR 100514065 B1 KR100514065 B1 KR 100514065B1 KR 1019970051483 A KR1019970051483 A KR 1019970051483A KR 19970051483 A KR19970051483 A KR 19970051483A KR 100514065 B1 KR100514065 B1 KR 100514065B1
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South Korea
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light
guide plate
light guide
lamp
liquid crystal
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KR1019970051483A
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Korean (ko)
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KR19990030975A (en
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김태준
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삼성전자주식회사
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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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • 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
    • G02B6/0031—Reflecting element, sheet or layer
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0051—Diffusing sheet or layer
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

소비전력 감소 및 고휘도를 얻을 수 있도록 한 액정표시장치용 백라이트 어셈블 리가 개시된다. 도광판은 LCD 패널과 대응하는 일측면을 가로질러 광의 균일성을 위해 돌출부가 형성된 광을 가이드한다. 램프는 돌출부와 대응하여 설치되는 광을 발산한다. 반사체는 램프로부터 발산되는 광을 도광판으로 반사한다. 확산시트는 도광판으로부터 발산되는 광을 확산시킨다. 프리즘시트는 확산시트로부터 발산되는 광을 집광시킨다. 따라서, 램프의 광이 도광판에 직접적으로 투과하는 면적이 넓힐 수 있어 고휘도를 얻을 수 있고, 백라이트의 전체적인 외형 크기를 줄여 액정표시장치의 전체 중량 감소시킬 수 있다.Disclosed is a backlight assembly for a liquid crystal display device capable of reducing power consumption and obtaining high brightness. The light guide plate guides light in which protrusions are formed for uniformity of light across one side corresponding to the LCD panel. The lamp emits light which is installed corresponding to the protrusion. The reflector reflects light emitted from the lamp to the light guide plate. The diffusion sheet diffuses light emitted from the light guide plate. The prism sheet focuses light emitted from the diffusion sheet. Therefore, the area where the light of the lamp passes directly through the light guide plate can be widened to obtain high brightness, and the overall size of the backlight can be reduced to reduce the overall weight of the liquid crystal display device.

Description

액정표시장치용 백라이트 어셈블리Backlight Assembly for Liquid Crystal Display

본 발명은 액정표시장치용 백라이트 어셈블리에 관한 것으로, 더욱 상세하게는 도광판의 배면에 램프가 위치하고 램프와 대응하는 도광판 영역을 램프 방향으로 돌출 형성함으로서 소비전력 감소 및 고휘도를 얻을 수 있도록 한 액정표시장치용 백라이트 어셈블리에 관한 것이다,The present invention relates to a backlight assembly for a liquid crystal display device, and more particularly, a liquid crystal display device in which a lamp is disposed on a rear surface of a light guide plate, and a light guide plate region corresponding to the lamp is formed to protrude in the direction of the lamp to reduce power consumption and obtain high brightness. For a backlight assembly,

일반적으로 정보화 사회에서 액정표시장치의 개발은 눈부시게 발전하고 있으며, 그 역할도 중요화되고 있다. 액정표시장치는 자체 발광을 하지 못하기 때문에 액정표시장치에는 일반적으로 백라이트 장치가 필요하며, 액정표시장치의 성능은 액정표시장치 자체뿐만이 아니라 액정표시장치에 설치되는 백라이트 장치에 의존하는 바가 크다. In general, the development of the liquid crystal display device in the information society has been remarkably developed, the role is also important. Since a liquid crystal display device does not emit light by itself, a liquid crystal display device generally requires a backlight device, and the performance of the liquid crystal display device depends not only on the liquid crystal display device itself but also on the backlight device installed in the liquid crystal display device.

도 1은 종래의 기술에 따른 액정표시장치용 백라이트 어셈블리를 개략적으로 나타낸 사시도이다.1 is a perspective view schematically showing a backlight assembly for a liquid crystal display according to the related art.

도시된 바와 같이, 광을 발산하는 램프(2)가 설치되어 있으며, 램프(2)의 장축에 소정의 일측면이 대응되게 수평으로 배치되어 램프(2)의 광을 LCD 패널(미도시) 방향으로 균일하게 발산하는 도광판(4)이 설치되어 있다. 이때, 고휘도를 위해 도광판(4)의 타측면에 대응하여 램프(2)가 설치되어 있는 바, 이 램프 또한 도광판의 양측면에 각각 2개씩 설치되기도 한다.As shown in the drawing, a lamp 2 for emitting light is provided, and a predetermined side surface is horizontally disposed to correspond to the long axis of the lamp 2 so that the light of the lamp 2 is directed toward the LCD panel (not shown). The light guide plate 4 which emits uniformly is provided. At this time, the lamp 2 is provided corresponding to the other side surface of the light guide plate 4 for high brightness, and also two lamps may be provided on each side of the light guide plate.

도광판(4)의 하부에는 LCD 패널(미도시)의 반대 방향으로 유출되는 광을 LCD 패널 방향으로 반사할 수 있도록 반사시트(3)가 설치되어 있고, 도광판(4)의 상부에는 도광판(4)으로부터 발산되는 광을 확산시키는 확산시트(5)가 설치되어 있으며, 확산시트(5)의 상부에는 확산된 광을 다시 집광시켜 LCD 패널로 직진시키는 프리즘시트(6)가 설치되어 있는 바, 이때 프리즘시트(6)는 하나 이상이 설치될 수 있다.A reflecting sheet 3 is disposed below the light guide plate 4 to reflect light flowing out in an opposite direction of the LCD panel (not shown) in the LCD panel direction, and the light guide plate 4 is disposed above the light guide plate 4. A diffusion sheet 5 for diffusing light emitted from the light is provided, and a prism sheet 6 is installed on the upper portion of the diffusion sheet 5 to condense the diffused light and go straight to the LCD panel. One or more seats 6 may be installed.

프리즘시트(6)의 상부에는 먼지나 스크랫치에 민감한 시트들을 보호하는 보호시트(7)가 설치되어 있다.On the upper part of the prism sheet 6, a protective sheet 7 for protecting sheets sensitive to dust or scratches is provided.

또한, 도광판(4) 방향 이외의 방향으로 발산되는 광을 도광판(4) 방향으로 반사할 수 있도록 램프(2)의 타측면에 램프커버(1)가 설치되어 있다.In addition, a lamp cover 1 is provided on the other side of the lamp 2 so that light emitted in a direction other than the direction of the light guide plate 4 can be reflected in the direction of the light guide plate 4.

이와 같은 구조의 백라이트의 작용을 보다 상세히 설명하면 다음과 같다.Referring to the operation of the backlight having such a structure in more detail as follows.

먼저, 램프(2)에서 발산되는 광은 도광판(4)내의 도트(미도시)에 반사되어 LCD 패널 방향으로 반사되는 한편, 소정량의 광은 도광판(4) 배면으로 유출되는 바, 이때, 이 광은 반사판(3)에 의해 도광판(4)으로 반사된다.First, light emitted from the lamp 2 is reflected by a dot (not shown) in the light guide plate 4 and reflected in the direction of the LCD panel, while a predetermined amount of light flows out to the back surface of the light guide plate 4. Light is reflected by the reflecting plate 3 to the light guide plate 4.

도광판(4) 및 반사판(3)으로부터 반사되는 광은 확산판(5)에 의해 확산되며, 프리즘시트(6)를 통과한 광은 집광되어 보호시트(7)를 통해 LCD 패널를 투과한다.Light reflected from the light guide plate 4 and the reflecting plate 3 is diffused by the diffuser plate 5, and the light passing through the prism sheet 6 is collected and transmitted through the protective sheet 7 through the LCD panel.

그러나, 고휘도를 얻기 위해 도광판의 양측면에 램프가 설치됨에 따라 백라이트의 전체적인 크기가 커지고, 이에 대응 관련하여 제조되는 액정표시장치의 중량이 증가하는 문제점이 있었다.However, as the lamps are installed on both sides of the light guide plate to obtain high brightness, the overall size of the backlight increases, and there is a problem in that the weight of the liquid crystal display device manufactured in response thereto increases.

또한, 고휘도를 얻기 위해 도광판의 양측면에 각각 두 개씩 램프를 설치함으로서 백라이트의 중량이 증가하는 문제점이 있었다.In addition, there is a problem in that the weight of the backlight increases by installing two lamps on each side of the light guide plate to obtain high brightness.

따라서, 본 발명의 목적은 백라이트의 크기가 외형적으로 커지는 것을 방지하고 고휘도를 위한 최소한의 램프를 설치함으로서 액정표시장치의 중량이 증가하는 것을 방지할 수 있도록 한 액정표시장치용 백라이트 어셈블리를 제공하는데 있다.Accordingly, an object of the present invention is to provide a backlight assembly for a liquid crystal display device which prevents the size of the backlight from increasing in appearance and prevents an increase in weight of the liquid crystal display device by installing a minimum lamp for high brightness. have.

이와 같은 목적을 달성하기 위해서 일실시예에 따른 액정표시장치용 백라이트 어셈블리는 도광판, 램프, 반사체, 확산시트 및 프리즘시트를 포함한다. 상기 도광판은 LCD 패널과 대응하는 일측면을 가로질러 광의 균일성을 위해 돌출부가 형성된 광을 가이드한다. 상기 램프는 상기 돌출부와 대응하여 설치되는 광을 발산한다. 상기 반사체는 상기 램프로부터 발산되는 광을 상기 도광판으로 반사한다. 상기 확산시트는 상기 도광판으로부터 발산되는 광을 확산시킨다. 상기 프리즘시트는 상기 확산시트로부터 발산되는 광을 집광시킨다.In order to achieve the above object, a backlight assembly for a liquid crystal display according to an embodiment includes a light guide plate, a lamp, a reflector, a diffusion sheet, and a prism sheet. The light guide plate guides light in which protrusions are formed for uniformity of light across one side corresponding to the LCD panel. The lamp emits light installed corresponding to the protrusion. The reflector reflects light emitted from the lamp to the light guide plate. The diffusion sheet diffuses light emitted from the light guide plate. The prism sheet focuses light emitted from the diffusion sheet.

이러한 액정표시장치용 백라이트 어셈블리에 의하면, 램프의 광이 도광판에 직접적으로 투과하는 면적이 넓힐 수 있어 고휘도를 얻을 수 있고, 백라이트의 전체적인 외형 크기를 줄여 액정표시장치의 전체 중량을 감소시킬 수 있다.According to the backlight assembly for the liquid crystal display device, the area where the light of the lamp passes directly through the light guide plate can be widened to obtain high brightness, and the overall weight of the backlight can be reduced to reduce the overall weight of the liquid crystal display device.

이하 첨부된 도면을 참조하여 본 발명의 실시예를 보다 상세히 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명의 실시예에 따른 액정표시장치용 백라이트 어셈블리를 개략적으로 나타낸 사시도이다.2 is a perspective view schematically illustrating a backlight assembly for a liquid crystal display according to an exemplary embodiment of the present invention.

도 2를 참조하면, 광을 LCD 패널(미도시) 방향으로 가이드하는 도광판(14)이 수평으로 설치되어 있는 바, 광의 균일성을 향상시키기 위해서 도광판(14)의 하부면 중심 영역을 가로질러 하부 방향으로 돌출된 돌출부(15)가 소정 간격 이격되어 두 개 형성되어 있다. 이때, 이 돌출부(15)의 표면은 곡선 형태로 이루어져 있다.Referring to FIG. 2, a light guide plate 14 for guiding light toward an LCD panel (not shown) is horizontally installed. The light guide plate 14 is lowered across the central region of the lower surface of the light guide plate 14 to improve light uniformity. Two protrusions 15 protruding in the direction are spaced apart from each other by a predetermined interval. At this time, the surface of the protrusion 15 has a curved shape.

또한, 각각의 돌출부(15)에 대응하여 램프(12)가 설치되어 있고, 램프(12)의 하부에는 램프(12)로부터 발산되는 광을 도광판(14)으로 반사할 수 있도록 반사체(11)가 설치되어 있다.In addition, a lamp 12 is provided corresponding to each of the protrusions 15, and a reflector 11 is provided below the lamp 12 to reflect light emitted from the lamp 12 to the light guide plate 14. It is installed.

또한, 도광판(14)의 상부에는 도광판(14)으로부터 발산되는 광을 확산시키는 확산시트(5)가 설치되어 있고, 확산시트(5)의 상부에는 확산된 광을 집광시키는 프리즘시트(5)가 설치되어 있으며, 이때, 프리즘시트(5)는 복수개 설치될 수 있는 한편, 프리즘시트(5)의 상부에는 시트들을 먼지 및 스크랫치로부터 보호하는 보호시트(7)가 설치되어 있다.Further, a diffusion sheet 5 for diffusing light emitted from the light guide plate 14 is provided on the light guide plate 14, and a prism sheet 5 for condensing the diffused light is provided on the top of the diffusion sheet 5. In this case, a plurality of prism sheets 5 may be installed, while a protective sheet 7 is provided on the upper portion of the prism sheet 5 to protect the sheets from dust and scratches.

이와 같은 구조로 이루어진 액정표시장치용 백라이트 어셈블리의 작용 보다 상세히 설명하면 다음과 같다.The operation of the backlight assembly for a liquid crystal display device having such a structure will be described in detail as follows.

먼저, 도광판(14)의 돌출부(15)에 대응하여 설치된 램프(12)로부터 발산되는 광은 도광판(14)을 거쳐 LCD 패널 방향으로 가이드되는 바, 이때, 도광판(14)의 하부면에서 광이 발산됨으로 광이 도광판(14)의 표면에 직접적으로 투과하는 면적이 넓어 종래보다 적은 수의 램프(12)를 설치하여 보다 더 고휘도를 얻을 수 있다. 물론, 램프(12) 하부로 발산되는 광은 반사체(11)를 통해 도광판(14)으로 반사된다.First, light emitted from the lamp 12 installed corresponding to the protrusion 15 of the light guide plate 14 is guided toward the LCD panel through the light guide plate 14, and at this time, light is emitted from the lower surface of the light guide plate 14. Since the area of light is directly transmitted to the surface of the light guide plate 14 due to the divergence, a higher number of lamps 12 may be provided than in the related art. Of course, light emitted below the lamp 12 is reflected to the light guide plate 14 through the reflector 11.

이렇게 가이드된 광은 확산시트(5)를 거쳐 확산되고, 확산된 광은 프리즘시트(6)를 거쳐 집광되며, 집광된 광은 보호시트(7)를 거쳐 LCD 패널을 투과한다.The guided light is diffused through the diffusion sheet 5, the diffused light is collected through the prism sheet 6, and the collected light is transmitted through the LCD panel through the protective sheet 7.

이와 같이 램프가 도광판의 하부면에 설치됨으로서 백라이트의 외형적 크기가 감소하고, 종래보다 램프의 광이 도광판의 전면에 직접적으로 투과하는 면적이 넓기 때문에 고휘도를 얻을 수 있다.Thus, since the lamp is installed on the lower surface of the light guide plate, the external size of the backlight is reduced, and the luminance of the lamp is directly transmitted to the front surface of the light guide plate, so that high brightness can be obtained.

이상에서 살펴본 바와 같이, 본 발명은 도광판의 하부면에 램프를 설치함으로서 도광판에 직접적으로 투과하는 면적이 넓어 종래 보다 고휘도를 얻을 수 있으며, 또한, 백라이트의 전체적인 외형 크기가 줄어들고, 이러한 백라이트 이용하여 차후 액정표시장치를 제작할 경우 액정표시장치의 전체 중량이 감소하는 효과가 있다.As described above, the present invention provides a higher luminance than the conventional one by providing a lamp that directly penetrates the light guide plate by installing a lamp on the lower surface of the light guide plate, and also reduces the overall appearance size of the backlight, and subsequently uses the backlight. When the liquid crystal display device is manufactured, the total weight of the liquid crystal display device is reduced.

도 1은 종래의 기술에 따른 액정표시장치용 백라이트 어셈블리를 개략적으로 나타낸 사시도.1 is a perspective view schematically showing a backlight assembly for a liquid crystal display according to the related art.

도 2는 본 발명의 기술에 따른 액정표시장치용 백라이트 어셈블리를 개략적으로 나타낸 사시도.2 is a perspective view schematically showing a backlight assembly for a liquid crystal display according to the technique of the present invention.

Claims (1)

광을 발산하는 램프;A lamp for emitting light; 상기 램프로부터 발산되는 광을 반사하는 반사체;A reflector reflecting light emitted from the lamp; LCD 패널과 대응하는 일측면을 가로질러 광의 균일성을 위해 상기 램프를 향해 돌출되면서 외주면이 소정의 곡률을 갖는 돌출부를 구비하고, 상기 램프에서 제공되는 광과 상기 반사체에서 반사된 광의 경로를 가이드하는 도광판;An outer circumferential surface having a protrusion having a predetermined curvature while projecting toward the lamp for uniformity of light across the corresponding side of the LCD panel, and guiding a path of the light provided from the lamp and the light reflected from the reflector Light guide plate; 상기 도광판 위에 배치되어, 상기 도광판에 의해 가이드된 광을 확산시키는 확산시트; 및A diffusion sheet disposed on the light guide plate to diffuse light guided by the light guide plate; And 상기 확산시트 위에 배치되어, 상기 확산시트에 의해 확산된 광을 집광시켜 상기 LCD 패널에 제공하는 프리즘시트를 포함하는 것을 특징으로 하는 액정표시장치용 백라이트 어셈블리.And a prism sheet disposed on the diffusion sheet and condensing the light diffused by the diffusion sheet to provide the prism sheet to the LCD panel.
KR1019970051483A 1997-10-08 1997-10-08 Backlight Assembly for Liquid Crystal Display KR100514065B1 (en)

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