KR20110006957A - Edge type back light unit - Google Patents

Edge type back light unit Download PDF

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Publication number
KR20110006957A
KR20110006957A KR1020090064609A KR20090064609A KR20110006957A KR 20110006957 A KR20110006957 A KR 20110006957A KR 1020090064609 A KR1020090064609 A KR 1020090064609A KR 20090064609 A KR20090064609 A KR 20090064609A KR 20110006957 A KR20110006957 A KR 20110006957A
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KR
South Korea
Prior art keywords
wall portion
bottom chassis
printed circuit
circuit board
backlight unit
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KR1020090064609A
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Korean (ko)
Inventor
조재현
강덕인
박장대
홍대운
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주식회사 디에스엘시디
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Priority to KR1020090064609A priority Critical patent/KR20110006957A/en
Publication of KR20110006957A publication Critical patent/KR20110006957A/en

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    • 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
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314—Back frames
    • 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
    • G02F1/133628—Illuminating devices with cooling means

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

Abstract

PURPOSE: An edge type back unit is provided to insert and fix the mounted printed circuit substrate to a bottom chassis, thereby shortening the assembly working time and improving the productivity. CONSTITUTION: A light guide plate(2) guides the light by being installed in a bottom chassis(1). A lamp assembly(3) is installed to face the side of the light guide plate. A lamp assembly radiates light to the light guide plate. The bottom chassis is projected along the edge.

Description

에지형 백라이트 유닛{edge type back light unit}Edge type back light unit

본 발명은 에지형 백라이트 유닛에 관한 것으로서, 더욱 상세하게는 도광판의 측면에 설치되는 램프조립체에서 다수의 발광다이오드가 실장되는 인쇄회로기판을 찬넬 형상으로 형성하고, 바텀샤시에 형성된 단턱부에 끼움 고정시킴으로써, 램프조립체의 방열 효과를 향상시키고, 공정 단순화에 따라 생산성이 향상되며, 백라이트 유닛의 대형화 및 슬림화에 이바지할 수 있는 에지형 백라이트 유닛에 관한 것이다.The present invention relates to an edge type backlight unit, and more particularly, in a lamp assembly installed at a side of a light guide plate, a printed circuit board on which a plurality of light emitting diodes are mounted is formed in a channel shape, and is fitted to a stepped portion formed in a bottom chassis. By improving the heat dissipation effect of the lamp assembly, the productivity is improved by simplifying the process, and relates to an edge type backlight unit that can contribute to the enlargement and slimming of the backlight unit.

일반적으로, 액정표시장치(LCD: Liquid Crystal Display)는 액정화면의 배면에 화상을 시각적으로 표현하기 위하여 광원이 필요하며, 이러한 광원으로 백라이트 유닛(BLU: Back Light Unit)을 사용하게 된다. 이러한 백라이트 유닛에는 주로 냉음극 형광램프(CCFL: Cold Cathode Fluorescent Lamp)를 이용하며, 냉음극 형광램프에서 발생한 빛을 도광판(LGP: Light Gaide Panel)을 통해 전달하여 액정표시장치의 아래에서 액정화면에 투사하게 된다.In general, a liquid crystal display (LCD) requires a light source to visually display an image on a rear surface of a liquid crystal display, and uses a backlight unit (BLU) as the light source. The backlight unit mainly uses a Cold Cathode Fluorescent Lamp (CCFL), and transmits the light generated from the Cold Cathode Fluorescent Lamp through a light guide panel (LGP) to the LCD screen under the LCD. Will be projected.

냉음극 형광램프는 수은을 램프 1개당 2.5~3.5㎎으로 함유하여 환경 규제의 대상이 되고, 인버터와의 연결을 위한 와이어(wire)가 필요하기 때문에 전류가 누 설될 우려가 있다. 또한, 신뢰성 면에서 진동이나 충격에 약하고, 색 재현성 면에서도 기존 CRT 대비 시인성이 많이 떨어지는 단점도 있다.Cold-cathode fluorescent lamps contain mercury at 2.5 to 3.5 mg per lamp and are subject to environmental regulations, and there is a risk of current leakage because wires are required for connection with inverters. In addition, it is weak in vibration and shock in terms of reliability, and in terms of color reproducibility, it also has a disadvantage in that visibility is much lower than that of existing CRTs.

따라서, 이러한 냉음극 형광램프의 단점을 극복할 수 있는 고신뢰성 조건을 만족시킬 수 있는 대안책으로 발광다이오드(LED: Light Emitted Diode)를 액정표시장치의 백라이트 광원으로 사용하였다.Accordingly, a light emitting diode (LED) is used as a backlight light source of a liquid crystal display device as an alternative to satisfy high reliability conditions that can overcome the disadvantages of the cold cathode fluorescent lamp.

첨부 도면 도 1은 종래 기술에 따른 에지형 백라이트 유닛에서 램프조립체의 결합 상태를 도시한 도면으로써, 도 1을 참조하면, 바텀샤시(100)의 상측면에 도광판(200)이 설치되고, 도광판(200)의 측면에는 램프조립체(300)가 마주보게 설치된다. 램프조립체(300)는 도광판(200)을 향해 빛을 발산하고, 도광판(200)은 램프조립체(300)에서 발산된 빛을 액정표시장치(미도시)로 안내한다.1 is a view illustrating a coupling state of a lamp assembly in an edge type backlight unit according to the related art. Referring to FIG. 1, a light guide plate 200 is installed on an upper side of a bottom chassis 100, and a light guide plate ( The lamp assembly 300 is installed to face the side of the 200. The lamp assembly 300 emits light toward the light guide plate 200, and the light guide plate 200 guides the light emitted from the lamp assembly 300 to a liquid crystal display (not shown).

또한, 도시되지 않았지만, 바텀샤시(100)와 도광판(200) 사이에 배치되어 도광판(200)으로부터 전달된 빛을 액정표시장치(미도시)로 반사시키는 반사판이 형성되고, 도광판(200) 상측면에 배치되는 확산시트, 프리즘시트, 및 보호시트 등이 몰드프레임에 탑 다운(Top Down) 방식으로 적층 조립되도록 할 수 있다. 또한, 교류 전원을 인가받아 가변적으로 광세기를 조절하기 위한 인버터(미도시)가 램프조립체(300)와 전기적으로 연결되어 있을 수 있다.In addition, although not shown, a reflector is disposed between the bottom chassis 100 and the light guide plate 200 to reflect the light transmitted from the light guide plate 200 to a liquid crystal display (not shown), and the upper surface of the light guide plate 200 is formed. A diffusion sheet, a prism sheet, a protective sheet, and the like disposed on the sheet may be laminated and assembled to the mold frame in a top down manner. In addition, an inverter (not shown) for varying light intensity by receiving AC power may be electrically connected to the lamp assembly 300.

여기서 램프조립체(300)는 발광다이오드(320)와, 다수의 발광다이오드(320)가 실장된 인쇄회로기판(310)(PCB: Printed Circuit Board)을 포함하고, 고정가이드(330)를 통해 램프조립체(300)를 바텀샤시(100)에 고정시킨다. 여기서 인쇄회로기판(310)은 평판형으로 일측면에 발광다이오드(320)가 실장될 수 있도록 하고, 고 정가이드(330)는 T자형, 또는 L자형으로 형성될 수 있다. 그러면, 인쇄회로기판(310)이 볼트(331)에 의해 고정가이드(330)의 수직인 부분에 나사 결합되어 고정가이드(330)에 인쇄회로기판(310)을 고정시키고, 고정가이드(330)의 수평인 부분이 볼트(331)에 의해 바텀샤시(100)에 나사 결합되어 인쇄회로기판(310)이 고정된 고정가이드(330)를 바텀샤시(100)에 고정시킨다.The lamp assembly 300 includes a light emitting diode 320 and a printed circuit board 310 (PCB: Printed Circuit Board) mounted with a plurality of light emitting diodes 320, the lamp assembly through a fixing guide 330 The 300 is fixed to the bottom chassis 100. In this case, the printed circuit board 310 may be mounted in a flat shape so that the light emitting diode 320 may be mounted on one side thereof, and the fixing guide 330 may be formed in a T-shape or an L-shape. Then, the printed circuit board 310 is screwed to the vertical portion of the fixing guide 330 by the bolt 331 to fix the printed circuit board 310 to the fixing guide 330, the fixing guide 330 The horizontal portion is screwed to the bottom chassis 100 by bolts 331 to fix the fixing guide 330 to which the printed circuit board 310 is fixed to the bottom chassis 100.

하지만, 종래 기술에 따른 에지형 백라이트 유닛에서 보면, 탑 다운 방식의 적층 조립 공정에서 볼트와 같은 별도의 체결부재와 고정가이드를 통해 다수의 발광다이오드가 실장된 인쇄회로기판을 도광판의 측면에 고정시켜야 하므로, 조립 작업 시간이 지연되고, 생산성을 저하시킬 수 있는 문제점이 있다.However, in the edge type backlight unit according to the prior art, the printed circuit board on which the plurality of light emitting diodes are mounted is fixed to the side of the light guide plate through a separate fastening member such as a bolt and a fixing guide in the top-down stacking assembly process. Therefore, the assembly work time is delayed, there is a problem that can lower the productivity.

또한, 다수의 발광다이오드가 실장된 인쇄회로기판을 바텀샤시에 설치할 때, 인쇄회로기판이 고정된 고정가이드가 차지하는 공간에 의해 백라이트 유닛의 대형화와 슬림화에 제약을 받게 되는 문제점이 있다.In addition, when installing a printed circuit board mounted with a plurality of light emitting diodes in the bottom chassis, there is a problem that the size of the backlight unit is limited by the space occupied by the fixed guide to which the printed circuit board is fixed.

또한, 볼트와 같은 별도의 체결부재를 통해 인쇄회로기판이 고정가이드에 고정되고 고정가이드가 바텀샤시에 고정되므로, 램프조립체에서 발산되는 열의 열전도율이 저하되어 과열에 의해 램프조립체가 오동작될 수 있는 문제점이 있다.In addition, since the printed circuit board is fixed to the fixing guide and the fixing guide is fixed to the bottom chassis through a separate fastening member such as a bolt, the thermal conductivity of the heat emitted from the lamp assembly is lowered, causing the lamp assembly to malfunction due to overheating. There is this.

따라서, 본 발명의 목적은 이와 같은 종래의 문제점을 해결하기 위한 것으로서, 탑 다운 방식의 적층 조립 공정에서 다수의 발광다이오드가 실장된 인쇄회로기판을 바텀샤시에 끼움 고정시킴으로써, 조립 작업 시간을 단축시키고, 생산성을 향상시킬 수 있는 에지형 백라이트 유닛을 제공함에 있다.Accordingly, an object of the present invention is to solve such a conventional problem, and in the top-down stacking assembly process, by fixing the printed circuit board on which a plurality of light emitting diodes are mounted on the bottom chassis, the assembly time is shortened. The present invention provides an edge type backlight unit that can improve productivity.

또한, 다수의 발광다이오드가 실장된 인쇄회로기판을 바텀샤시에 설치할 때, 램프조립체가 차지하는 공간을 축소시킴으로써, 백라이트 유닛의 대형화와 슬림화에 이바지할 수 있는 에지형 백라이트 유닛을 제공함에 있다.In addition, when installing a printed circuit board mounted with a plurality of light emitting diodes in the bottom chassis, by reducing the space occupied by the lamp assembly, to provide an edge-type backlight unit that can contribute to the increase in size and slimness of the backlight unit.

또한, 다수의 발광다이오드가 실장된 인쇄회로기판이 바텀샤시에 직접 연결됨으로써, 과열에 의해 램프조립체가 오동작되는 것을 방지할 수 있고, 램프조립체의 방열 효과를 향상시킬 수 있는 에지형 백라이트 유닛을 제공함에 있다.In addition, since a printed circuit board having a plurality of light emitting diodes mounted thereon is directly connected to the bottom chassis, it is possible to prevent the lamp assembly from malfunctioning due to overheating and to provide an edge type backlight unit that can improve the heat dissipation effect of the lamp assembly. Is in.

상기 목적은, 본 발명에 따라, 바텀샤시와, 상기 바텀샤시에 설치되어 빛을 안내하는 도광판과, 상기 도광판의 측면과 마주보게 설치되어 상기 도광판을 향해 빛을 발산하는 램프조립체를 포함하는 에지형 백라이트 유닛에 있어서, 상기 바텀샤시는 가장자리를 따라 돌출되는 단턱부가 형성되고, 상기 램프조립체는 외측벽부와, 상기 외측벽부와 이격되어 마주보게 배치되는 내측벽부와, 상기 외측벽부와 상기 내측벽부 사이에서 상기 단턱부가 삽입 고정되도록 형성된 고정홈을 구비하는 인쇄회로기판; 상기 내측벽부에 실장되는 다수의 발광다이오드;를 포함하는 것을 특징으로 하는 에지형 백라이트 유닛에 의해 달성된다.The object is, according to the present invention, an edge type including a bottom chassis, a light guide plate installed in the bottom chassis to guide light, and a lamp assembly installed to face the side surface of the light guide plate to emit light toward the light guide plate. In the backlight unit, the bottom chassis has a stepped portion protruding along an edge, and the lamp assembly includes an outer wall portion, an inner wall portion spaced apart from the outer wall portion, and the outer wall portion and the inner wall portion. A printed circuit board having a fixing groove formed to insert and fix the stepped portion therebetween; It is achieved by an edge-type backlight unit comprising a; a plurality of light emitting diodes mounted on the inner wall portion.

여기서 상기 외측벽부의 단부에 형성된 걸림후크를 더 포함하고, 상기 고정홈에 상기 단턱부가 삽입되면 상기 걸림후크가 상기 바텀샤시에 후크 결합되도록 하는 것이 바람직하다.Here, the hook portion is formed further at the end of the outer wall portion, it is preferable that the hook hook is hooked to the bottom chassis when the stepped portion is inserted into the fixing groove.

여기서 상기 내측벽부의 단부에서 돌출 형성되는 안착돌기와, 상기 바텀샤시의 바닥면에 형성되고 상기 안착돌기가 삽입 안착되는 안착홈을 더 포함하도록 하는 것이 바람직하다.Here, it is preferable to further include a seating protrusion protruding from the end of the inner wall portion, and a seating groove formed on the bottom surface of the bottom chassis and into which the seating protrusion is inserted.

여기서 상기 단턱부의 측면에서 돌출 또는 함몰되는 제1결합부와, 상기 제1결합부와 결합되도록 상기 외측벽부와 내측벽부 중 적어도 한 벽부에서 함몰 또는 돌출되는 제2결합부를 더 포함하도록 하는 것이 바람직하다.Here, it is preferable to further include a first coupling portion protruding or recessed from the side of the stepped portion, and a second coupling portion recessed or protruding from at least one of the outer wall portion and the inner wall portion to be coupled to the first coupling portion. Do.

여기서 상기 인쇄회로기판은 메탈코어인쇄회로기판인 것을 특징으로 하는 것이 바람직하다.The printed circuit board is preferably a metal core printed circuit board.

본 발명에 따르면, 탑 다운 방식의 적층 조립 공정에서 다수의 발광다이오드가 실장된 인쇄회로기판을 바텀샤시에 끼움 고정시킴으로써, 조립 작업 시간을 단축시키고, 생산성을 향상시킬 수 있는 에지형 백라이트 유닛이 제공된다.According to the present invention, an edge type backlight unit capable of shortening assembly time and improving productivity by fixing a printed circuit board having a plurality of light emitting diodes mounted on a bottom chassis in a top-down stack assembly process is provided. do.

이에 따라 제조 단가를 절약할 수 있는 에지형 백라이트 유닛이 제공된다.As a result, an edge type backlight unit capable of saving manufacturing costs is provided.

또한, 다수의 발광다이오드가 실장된 인쇄회로기판을 바텀샤시에 설치할 때, 램프조립체가 차지하는 공간을 축소시킴으로써, 백라이트 유닛의 대형화와 슬림화에 이바지할 수 있는 에지형 백라이트 유닛이 제공된다.In addition, when installing a printed circuit board mounted with a plurality of light emitting diodes in the bottom chassis, by reducing the space occupied by the lamp assembly, there is provided an edge type backlight unit that can contribute to the increase in size and slimness of the backlight unit.

또한, 다수의 발광다이오드가 실장된 인쇄회로기판이 바텀샤시에 직접 연결됨으로써, 과열에 의해 램프조립체가 오동작되는 것을 방지할 수 있고, 램프조립체의 방열 효과를 향상시킬 수 있는 에지형 백라이트 유닛이 제공된다.In addition, since a printed circuit board having a plurality of light emitting diodes mounted thereon is directly connected to the bottom chassis, it is possible to prevent the lamp assembly from malfunctioning due to overheating and to provide an edge type backlight unit that can improve the heat dissipation effect of the lamp assembly. do.

설명에 앞서, 여러 실시예에 있어서, 동일한 구성을 가지는 구성요소에 대해서는 동일한 부호를 사용하여 대표적으로 제1실시예에서 설명하고, 그 외의 실시예에서는 제1실시예와 다른 구성에 대해서 설명하기로 한다.Prior to the description, in the various embodiments, components having the same configuration will be representatively described in the first embodiment using the same reference numerals, and in other embodiments, different configurations from the first embodiment will be described. do.

이하, 첨부한 도면을 참조하여 본 발명의 일실시예에 따른 에지형 백라이트 유닛에 대하여 상세하게 설명한다.Hereinafter, an edge type backlight unit according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

첨부 도면 도 2는 본 발명의 일실시예에 따른 에지형 백라이트 유닛에서 램프조립체의 결합 상태를 도시한 도면이고, 도 3은 본 발명의 일실시예에 따른 에지형 백라이트 유닛에서 램프조립체의 결합 상태를 도시한 부분분해사시도이다.2 is a view showing a combined state of the lamp assembly in the edge type backlight unit according to an embodiment of the present invention, Figure 3 is a combined state of the lamp assembly in the edge type backlight unit according to an embodiment of the present invention Is a partially exploded perspective view showing.

도 2와 도 3을 참조하면, 본 발명의 일실시예에 따른 에지형 백라이트 유닛은 바텀샤시(1)의 상측면에 도광판(2)이 설치되고, 도광판(2)의 측면에는 램프조립체(3)가 마주보게 설치된다. 램프조립체(3)는 도광판(2)을 향해 빛을 발산하고, 도광판(2)은 램프조립체(3)에서 발산된 빛을 액정표시장치(미도시)로 안내한다.2 and 3, in the edge type backlight unit according to the exemplary embodiment of the present invention, a light guide plate 2 is installed on an upper side of the bottom chassis 1, and a lamp assembly 3 is provided on a side surface of the light guide plate 2. ) Is installed facing each other. The lamp assembly 3 emits light toward the light guide plate 2, and the light guide plate 2 guides the light emitted from the lamp assembly 3 to a liquid crystal display (not shown).

또한, 도시되지 않았지만, 도광판(2)으로 전달된 빛을 액정표시장치(미도시)로 반사시키는 반사판이 바텀샤시(1)와 도광판(2) 사이에 배치되고, 도광판(2) 상측면에 배치되는 확산시트, 프리즘시트, 및 보호시트 등이 몰드프레임에 탑 다운(Top Down) 방식으로 적층 조립되도록 하고, 교류 전원을 인가받아 가변적으로 광세기를 조절하기 위한 인버터가 램프조립체(3)와 전기적으로 연결되도록 할 수 있다.In addition, although not shown, a reflecting plate for reflecting light transmitted to the light guide plate 2 to a liquid crystal display device (not shown) is disposed between the bottom chassis 1 and the light guide plate 2 and disposed on the upper surface of the light guide plate 2. The diffusion sheet, the prism sheet, and the protective sheet are laminated to the mold frame in a top down manner, and an inverter for controlling light intensity variably by applying AC power is electrically connected to the lamp assembly 3. Can be connected.

본 발명에 따르면, 바텀샤시(1)는 가장자리를 따라 돌출되는 단턱부(11)가 형성되도록 한다. 바텀샤시(1)에 형성되는 단턱부(11)는 바텀샤시(1)의 측면벽이 될 수 있다. 그리고, 램프조립체(3)는 단턱부(11)가 삽입 고정되도록 고정홈(31c)이 형성된 찬넬 형상의 인쇄회로기판(31)과, 인쇄회로기판(31)에 실장되고 도광판(2)의 측면과 마주보게 설치되는 다수의 발광다이오드(32)를 포함한다.According to the present invention, the bottom chassis 1 has a stepped portion 11 protruding along the edge thereof. The stepped portion 11 formed on the bottom chassis 1 may be a side wall of the bottom chassis 1. In addition, the lamp assembly 3 is mounted on the printed circuit board 31 and the printed circuit board 31 having a channel shape in which a fixing groove 31c is formed so that the stepped part 11 is inserted and fixed to the side of the light guide plate 2. It includes a plurality of light emitting diodes 32 installed to face.

특히 찬넬 형상의 인쇄회로기판(31)은 외측벽부(31a)와, 외측벽부(31a)와 이격되어 마주보게 배치되는 내측벽부(31b)와, 외측벽부(31a)와 내측벽부(31b) 사이에서 바텀샤시(1)에 형성된 단턱부(11)가 삽입 고정되도록 형성된 고정홈(31c)을 구비한다. 여기서 인쇄회로기판(31)의 외측벽부(31a)는 바텀샤시(1)의 외측으로 노출되도록 하여 램프조립체(3)에서 발산되는 열의 방출을 용이하게 할 수 있다. 또한, 바텀샤시(1)에 형성된 단턱부(11)가 인쇄회로기판(31)의 고정홈(31c)에 삽입 고정되고, 인쇄회로기판(31)이 메탈코어인쇄회로기판(MCPCB: Metal Core Printed Circuit Board)으로 구성됨에 따라 램프조립체(3)에서 발산되는 열의 열전도율이 향상되어 방열 효과를 향상시킬 수 있다.In particular, the channel-shaped printed circuit board 31 has an inner wall portion 31b disposed to face the outer wall portion 31a and an outer wall portion 31a, and an outer wall portion 31a and an inner wall portion 31b. It has a fixing groove (31c) formed so that the stepped portion 11 formed in the bottom chassis 1 is inserted therebetween. Here, the outer wall portion 31a of the printed circuit board 31 may be exposed to the outside of the bottom chassis 1 to facilitate the emission of heat dissipated from the lamp assembly 3. In addition, the stepped portion 11 formed on the bottom chassis 1 is inserted into and fixed in the fixing groove 31c of the printed circuit board 31, and the printed circuit board 31 is a metal core printed circuit board (MCPCB). As a circuit board), the thermal conductivity of heat dissipated from the lamp assembly 3 may be improved to improve the heat dissipation effect.

여기서 인쇄회로기판(31)의 외측벽부(31a) 단부에는 걸림후크(31d)가 더 형성될 수 있다. 걸림후크(31d)의 형성에 따라 인쇄회로기판(31)의 고정홈(31c)에 바텀샤시(1)에 형성된 단턱부(11)가 삽입되면, 걸림후크(31d)가 바텀샤시(1)에 후크 결합되어 본 발명에 따라 인쇄회로기판(31)이 바텀샤시(1)의 단턱부(11)에 안정되게 밀착 고정될 수 있게 된다. 걸림후크(31d)는 도 2와 도 3에 도시된 바와 같이 바텀샤시(1)의 모서리에 후크 결합될 수 있다. 도시되지 않았지만, 바텀샤시(1)의 모서리에 돌출된 걸림리브가 형성되거나 함몰된 걸림홈이 형성되어 걸림후크(31d)의 유동을 방지하고, 안정된 후크 결합이 이루어지도록 할 수 있다.The hook hook 31d may be further formed at an end portion of the outer wall portion 31a of the printed circuit board 31. When the stepped portion 11 formed in the bottom chassis 1 is inserted into the fixing groove 31c of the printed circuit board 31 according to the formation of the hook hook 31d, the hook hook 31d is inserted into the bottom chassis 1. The hook is coupled, so that the printed circuit board 31 may be stably fixed to the stepped portion 11 of the bottom chassis 1 according to the present invention. The hook hook 31d may be hooked to an edge of the bottom chassis 1 as shown in FIGS. 2 and 3. Although not shown, a locking rib protruding or recessed at the corner of the bottom chassis 1 may be formed to prevent the flow of the locking hook 31d and to make a stable hook coupling.

또한, 인쇄회로기판(31)의 내측벽부 단부에는 돌출된 안착돌기(31e)가 더 형성되고, 바텀샤시(1)의 바닥면에는 안착홈(12)이 더 형성될 수 있다.In addition, a protruding seating protrusion 31e may be further formed at an inner wall end portion of the printed circuit board 31, and a seating recess 12 may be further formed at a bottom surface of the bottom chassis 1.

인쇄회로기판(31)의 고정홈(31c)에 바텀샤시(1)의 단턱부(11)가 삽입 고정되면, 안착돌기(31e)가 안착홈(12)에 삽입 안착되어 내측벽부(31b)와 단턱부(11) 사이가 벌어지는 것을 방지함은 물론 외측벽부(31a)와 내측벽부(31b) 사이의 이격거리가 벌어지는 것을 방지할 수 있다.When the stepped portion 11 of the bottom chassis 1 is inserted into and fixed to the fixing groove 31c of the printed circuit board 31, the seating protrusion 31e is inserted into the seating groove 12 to be seated to the inner wall portion 31b. It is possible to prevent the gap between the stepped part 11 and the gap between the outer wall part 31a and the inner wall part 31b.

또한, 바텀샤시(1)에 형성된 단턱부(11)의 측면에는 제1결합부(1a)가 더 형성되고, 인쇄회로기판(31)에는 제2결합부(2a)가 더 형성될 수 있다. 제2결합부(2a)는 외측벽부(31a)와 내측벽부(31b) 중 적어도 어느 한 벽부에 설치되면 충분하다. 여기서 제1결합부(1a)가 돌출 형성되면 제2결합부(2a)는 함몰 형성된다.In addition, the first coupling portion 1a may be further formed on the side surface of the stepped portion 11 formed on the bottom chassis 1, and the second coupling portion 2a may be further formed on the printed circuit board 31. It is sufficient that the second coupling portion 2a is provided on at least one of the outer wall portion 31a and the inner wall portion 31b. Here, when the first coupling portion 1a protrudes, the second coupling portion 2a is recessed.

인쇄회로기판(31)의 고정홈(31c)에 바텀샤시(1)에 형성된 단턱부(11)가 삽입 고정되면, 돌출된 제1결합부(1a)가 함몰된 제2결합부(2a)에 삽입 안착되어 인쇄회로기판(31)이 바텀샤시(1)에 안정되게 고정되도록 할 수 있다. 여기서 제1결합 부(1a)가 함몰 형성되면 제2결합부(2a)는 돌출 형성될 수 있다.When the stepped portion 11 formed in the bottom chassis 1 is inserted into and fixed to the fixing groove 31c of the printed circuit board 31, the protruding first coupling portion 1a is recessed into the second coupling portion 2a. The insertion and mounting may allow the printed circuit board 31 to be stably fixed to the bottom chassis 1. Here, when the first coupling portion 1a is recessed, the second coupling portion 2a may protrude.

본 발명의 권리범위는 상술한 실시예에 한정되는 것이 아니라 첨부된 특허청구범위 내에서 다양한 형태의 실시예로 구현될 수 있다. 특허청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술 분야에서 통상의 지식을 가진 자라면 누구든지 변형 가능한 다양한 범위까지 본 발명의 청구범위 기재의 범위 내에 있는 것으로 본다.The scope of the present invention is not limited to the above-described embodiment, but may be embodied in various forms of embodiments within the scope of the appended claims. Without departing from the gist of the invention claimed in the claims, it is intended that any person skilled in the art to which the present invention pertains falls within the scope of the claims described herein to various extents that can be modified.

도 1은 종래 기술에 따른 에지형 백라이트 유닛에서 램프조립체의 결합 상태를 도시한 도면,1 is a view showing a coupling state of the lamp assembly in the edge type backlight unit according to the prior art,

도 2는 본 발명의 일실시예에 따른 에지형 백라이트 유닛에서 램프조립체의 결합 상태를 도시한 도면,2 is a view showing a combined state of the lamp assembly in the edge type backlight unit according to an embodiment of the present invention,

도 3은 본 발명의 일실시예에 따른 에지형 백라이트 유닛에서 램프조립체의 결합 상태를 도시한 부분분해사시도이다.3 is a partially exploded perspective view illustrating a coupling state of a lamp assembly in an edge type backlight unit according to an embodiment of the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

1, 100: 바텀샤시 2, 200: 도광판 3, 300: 램프조립체1, 100: bottom chassis 2, 200: LGP 3, 300: lamp assembly

11: 단턱부 12: 안착홈 1a: 제1결합부11: step 12: seating groove 1a: first coupling portion

31, 310: 인쇄회로기판 31a: 외측벽부 31b: 내측벽부31, 310: printed circuit board 31a: outer wall portion 31b: inner wall portion

31c: 고정홈 31d: 걸림후크 31e: 안착돌기31c: fixing groove 31d: hook hook 31e: seating protrusion

2a: 제결합부 32, 320: 발광다이오드 330: 고정가이드2a: decoupling part 32, 320: light emitting diode 330: fixed guide

331: 볼트331: bolt

Claims (5)

바텀샤시와, 상기 바텀샤시에 설치되어 빛을 안내하는 도광판과, 상기 도광판의 측면과 마주보게 설치되어 상기 도광판을 향해 빛을 발산하는 램프조립체를 포함하는 에지형 백라이트 유닛에 있어서,An edge type backlight unit including a bottom chassis, a light guide plate installed in the bottom chassis to guide light, and a lamp assembly installed to face a side surface of the light guide plate to emit light toward the light guide plate. 상기 바텀샤시는 가장자리를 따라 돌출되는 단턱부가 형성되고,The bottom chassis has a stepped portion protruding along the edge, 상기 램프조립체는The lamp assembly is 외측벽부와, 상기 외측벽부와 이격되어 마주보게 배치되는 내측벽부와, 상기 외측벽부와 상기 내측벽부 사이에서 상기 단턱부가 삽입 고정되도록 형성된 고정홈을 구비하는 인쇄회로기판;A printed circuit board having an outer wall portion, an inner wall portion spaced apart from the outer wall portion, and a fixing groove formed to insert and fix the stepped portion between the outer wall portion and the inner wall portion; 상기 내측벽부에 실장되는 다수의 발광다이오드;를 포함하는 것을 특징으로 하는 에지형 백라이트 유닛.Edge type backlight unit comprising a; a plurality of light emitting diodes mounted on the inner wall portion. 제1항에 있어서,The method of claim 1, 상기 외측벽부의 단부에 형성된 걸림후크를 더 포함하고,Further comprising a hook hook formed at the end of the outer wall portion, 상기 고정홈에 상기 단턱부가 삽입되면 상기 걸림후크가 상기 바텀샤시에 후크 결합되는 것을 특징으로 하는 에지형 백라이트 유닛.The hook type is characterized in that the hook hook is coupled to the bottom chassis when the stepped portion is inserted into the fixing groove. 제2항에 있어서,The method of claim 2, 상기 내측벽부의 단부에서 돌출 형성되는 안착돌기와,A seating protrusion protruding from an end portion of the inner wall portion; 상기 바텀샤시의 바닥면에 형성되고 상기 안착돌기가 삽입 안착되는 안착홈을 더 포함하는 것을 특징으로 하는 에지형 백라이트 유닛.Edge type backlight unit, characterized in that it further comprises a seating groove formed on the bottom of the bottom chassis and the seating protrusion is inserted and seated. 제1항 내지 제3항 중 어느 한 항에 있어서,The method according to any one of claims 1 to 3, 상기 단턱부의 측면에서 돌출 또는 함몰되는 제1결합부와,A first coupling part protruding or recessed from the side surface of the stepped part, 상기 제1결합부와 결합되도록 상기 외측벽부와 내측벽부 중 적어도 한 벽부에서 함몰 또는 돌출되는 제2결합부를 더 포함하는 것을 특징으로 하는 에지형 백라이트 유닛.The edge type backlight unit further comprises a second coupling portion recessed or protruded from at least one of the outer wall portion and the inner wall portion to be coupled to the first coupling portion. 제1항 내지 제3항 중 어느 한 항에 있어서,The method according to any one of claims 1 to 3, 상기 인쇄회로기판은 메탈코어인쇄회로기판인 것을 특징으로 하는 에지형 백라이트 유닛.The printed circuit board is an edge type backlight unit, characterized in that the metal core printed circuit board.
KR1020090064609A 2009-07-15 2009-07-15 Edge type back light unit KR20110006957A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8834000B2 (en) 2011-09-01 2014-09-16 Samsung Display Co., Ltd. Light-source unit, back-light unit having the same, and display device having the same
KR101445380B1 (en) * 2012-06-29 2014-09-29 엘지이노텍 주식회사 Lighting device and liquid crystal display with the lighting device
US9341767B2 (en) 2012-09-21 2016-05-17 Samsung Display Co., Ltd. Display device
CN105700231A (en) * 2016-02-04 2016-06-22 友达光电股份有限公司 Light source module

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8834000B2 (en) 2011-09-01 2014-09-16 Samsung Display Co., Ltd. Light-source unit, back-light unit having the same, and display device having the same
KR101445380B1 (en) * 2012-06-29 2014-09-29 엘지이노텍 주식회사 Lighting device and liquid crystal display with the lighting device
US9341767B2 (en) 2012-09-21 2016-05-17 Samsung Display Co., Ltd. Display device
CN105700231A (en) * 2016-02-04 2016-06-22 友达光电股份有限公司 Light source module

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