KR20110012246A - Backlight unit - Google Patents

Backlight unit Download PDF

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Publication number
KR20110012246A
KR20110012246A KR1020090069887A KR20090069887A KR20110012246A KR 20110012246 A KR20110012246 A KR 20110012246A KR 1020090069887 A KR1020090069887 A KR 1020090069887A KR 20090069887 A KR20090069887 A KR 20090069887A KR 20110012246 A KR20110012246 A KR 20110012246A
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South Korea
Prior art keywords
light
guide plate
light emitting
emitting device
quantum dot
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KR1020090069887A
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Korean (ko)
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이정목
진재현
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엘지이노텍 주식회사
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Priority to KR1020090069887A priority Critical patent/KR20110012246A/en
Publication of KR20110012246A publication Critical patent/KR20110012246A/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
    • G02F1/133524—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
    • 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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/0229—Optical fibres with cladding with or without a coating characterised by nanostructures, i.e. structures of size less than 100 nm, e.g. quantum dots
    • 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
    • G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/28—Adhesive materials or arrangements

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

Abstract

PURPOSE: A backlight unit with superior light efficiency is provided to increase durability. CONSTITUTION: A light emitting device(140) is arranged on the side of a light guide plate. The light emitting device generates light. A quantum dot bar(170) is interposed between the light emitting device and the light guide plate. The quantum dot bar converts light generated in the light emitting device into white light. The quantum dot bar provides the converted white light to the light guide plate.

Description

백라이트 유닛{BACKLIGHT UNIT}Backlight Unit {BACKLIGHT UNIT}

실시예는 백라이트 유닛에 관한 것이다.An embodiment relates to a backlight unit.

표시장치들 중에는 영상을 표시하기 위해서, 광을 발생시킬 수 있는 백라이트 유닛을 필요로 하는 장치가 있다. 백라이트 유닛은 액정 등을 포함하는 표시패널에 광을 공급하는 장치로서, 발광장치와 발광장치에서 출력된 광을 액정 측에 효과적으로 전달하기 위한 수단들을 포함한다.Some display devices require a backlight unit capable of generating light in order to display an image. The backlight unit is a device for supplying light to a display panel including a liquid crystal and the like, and includes a light emitting device and means for effectively transferring the light output from the light emitting device to the liquid crystal side.

발광장치로는 LED(Light Emitted Diode)가 적용될 수 있으며, 발광장치에서 출력된 광을 표시패널 측에 효과적으로 전달하기 위해, 도광판과 광학시트 등을 적층하여 사용할 수 있다. A light emitting diode (LED) may be applied as the light emitting device, and in order to effectively transmit the light output from the light emitting device to the display panel, a light guide plate and an optical sheet may be stacked and used.

통상적으로는 발광장치로서 백색 LED를 적용하고 있으며, 백색 LED가 도광판에 접촉하여 광을 공급함으로써, 표시패널을 조광하는 기술이 사용되고 있다.In general, a white LED is used as a light emitting device, and a technique of dimming a display panel by using a white LED in contact with a light guide plate to supply light is used.

실시예는 광 효율이 우수하고 내구성이 향상된 백라이트 유닛을 제공한다.The embodiment provides a backlight unit having excellent light efficiency and improved durability.

실시예에 의한 백라이트 유닛은, 도광판; 상기 도광판의 측면에 배치되어 광을 발생시키는 발광소자; 상기 발광소자와 도광판 사이에 개재되어, 상기 발광소자에서 발생한 광을 백색광으로 변환하여 상기 도광판으로 제공하는 양자점 바를 포함한다.The backlight unit according to the embodiment includes a light guide plate; A light emitting device disposed on a side of the light guide plate to generate light; Interposed between the light emitting device and the light guide plate, and converts the light generated by the light emitting device to white light to provide a quantum dot bar to the light guide plate.

또한, 다른 실시예에 의한 백라이트 유닛은, 도광판; 상기 도광판의 측면에 배치되어 광을 발생시키는 발광소자; 상기 발광소자와 도광판 사이에 개재되어, 상기 발광소자에서 발생한 광을 백색광으로 변환하여 상기 도광판으로 제공하는 양자점 바; 상기 양자점 바와 상기 발광소자를 상호 접착시키는 제1접착층; 상기 양자점 바와 상기 도광판을 상호 접착시키는 제2접착층을 포함한다.In addition, the backlight unit according to another embodiment, the light guide plate; A light emitting device disposed on a side of the light guide plate to generate light; A quantum dot bar interposed between the light emitting device and the light guide plate to convert light generated from the light emitting device into white light and provide the light to the light guide plate; A first adhesive layer bonding the quantum dot bar and the light emitting device to each other; And a second adhesive layer for bonding the quantum dot bar and the light guide plate to each other.

실시예에 의하면, 광 효율이 우수하고 내구성이 향상된 백라이트 유닛을 제공할 수 있다.According to the embodiment, it is possible to provide a backlight unit having excellent light efficiency and improved durability.

이하에서는 첨부한 도면을 참조하여 실시예에 따른 백라이트 유닛에 대해서 상세하게 설명한다. 실시 예의 설명에 있어서, 각 층(막), 영역, 패턴 또는 구조물들이 기판, 각 층(막), 영역, 패드 또는 패턴들의 "상/위(on)"에 또는 "아 래(under)"에 형성되는 것으로 기재되는 경우에 있어, "상/위(on)"와 "아래(under)"는 "직접(directly)" 또는 "다른 층을 개재하여 (indirectly)" 형성되는 것을 모두 포함한다. 또한 각 층의 상/위 또는 아래에 대한 기준은 도면을 기준으로 설명한다. 도면에서 각층의 두께나 크기는 설명의 편의 및 명확성을 위하여 과장되거나 생략되거나 또는 개략적으로 도시되었다. 또한 각 구성요소의 크기는 실제크기를 전적으로 반영하는 것은 아니다.Hereinafter, a backlight unit according to an embodiment will be described in detail with reference to the accompanying drawings. In the description of an embodiment, each layer (film), region, pattern or structure may be "on" or "under" the substrate, each layer (film), region, pad or pattern. When described as being formed, "on" and "under" include both being formed "directly" or "indirectly" through another layer. Also, the criteria for top, bottom, or bottom of each layer will be described with reference to the drawings. In the drawings, the thickness or size of each layer is exaggerated, omitted, or schematically illustrated for convenience and clarity of description. In addition, the size of each component does not necessarily reflect the actual size.

도 1은 실시예에 따른 백라이트 유닛을 포함하는 평판표시장치의 분해 사시도이고, 도 2는 실시예에 따른 백라이트 유닛을 포함하는 표시장치의 측단면도이다.1 is an exploded perspective view of a flat panel display device including a backlight unit according to an embodiment, and FIG. 2 is a side cross-sectional view of the display device including a backlight unit according to an embodiment.

도 1에 도시된 바와 같이, 평판표시장치는 표시패널(200) 및 백라이트 유닛(100)과 이들을 수용하는 몰드프레임(110)을 포함한다.As shown in FIG. 1, the flat panel display includes a display panel 200, a backlight unit 100, and a mold frame 110 accommodating the display panel 200.

몰드프레임(110)은 백라이트 유닛(100) 및 표시패널(200)을 수용하는 사각 틀 형상으로 제작된다. The mold frame 110 is manufactured in a rectangular frame shape to accommodate the backlight unit 100 and the display panel 200.

표시패널(200)은 통과하는 광의 세기를 조절하여 영상을 표시한다. 표시패널(200)은 TFT기판, 컬러필터기판, 두 기판들 사이에 개재되는 액정층 및 편광필터 등을 포함할 수 있으며, 구동을 제어하기 위한 구동IC(210)가 형성될 수 있다.The display panel 200 displays an image by adjusting the intensity of light passing through the display panel 200. The display panel 200 may include a TFT substrate, a color filter substrate, a liquid crystal layer and a polarization filter interposed between the two substrates, and a driving IC 210 for controlling the driving may be formed.

백라이트 유닛(100)은 광을 발생시켜 표시패널(200)을 향하여 출사한다. 백라이트 유닛(100)은 표시패널(200) 측에 면광원을 출사하는 도광판(130)과, 도광판(130)의 후면에 위치한 반사시트(120)와, 도광판(130) 및 표시패널(200) 사이에 개재되는 광학시트(160)를 포함하며, 도광판(130)의 측면상에 배치되어 광을 발생 시키는 발광소자(140) 및 발광소자(140)에서 발생한 광을 제공받아 백색광으로 변환하여 도광판(130)에 백색광을 공급하는 양자점 바(quantum dot bar)(170)를 포함한다.The backlight unit 100 generates light and emits the light toward the display panel 200. The backlight unit 100 may include a light guide plate 130 that emits a surface light source to the display panel 200, a reflective sheet 120 disposed on a rear surface of the light guide plate 130, and a light guide plate 130 and the display panel 200. And a light emitting device 140 disposed on the side of the light guide plate 130 to generate light and the light generated by the light emitting device 140 to be converted into white light. And a quantum dot bar 170 for supplying white light.

반사시트(120)는 도광판(130) 후면과 몰드프레임(110) 사이에 배치되어, 발광소자(140)와 양자점 바(17) 및 도광판(130)에서 발생한 광을 표시패널(200) 측으로 반사시킨다.The reflective sheet 120 is disposed between the rear surface of the light guide plate 130 and the mold frame 110 to reflect the light generated from the light emitting element 140, the quantum dot bar 17, and the light guide plate 130 toward the display panel 200. .

광학시트부(160)는 도광판(130)과 표시패널(200) 사이에 개재되어 투과되는 광의 특성을 향상시킨다. The optical sheet unit 160 improves the characteristics of the light transmitted through the light guide plate 130 and the display panel 200.

도광판(130)은 광을 입사 받아, 반사, 굴절 및 산란 시켜 평면광으로 변화시킨다. The light guide plate 130 receives light incident, reflects, refracts, and scatters the light, thereby converting the light into planar light.

발광소자(140)는 도광판(130)의 측면에 배치되어 광을 발생시킨다. 발광소자(140)는 메인기판(미도시)에 연결된 연결기판(150)에 실장되어 연결기판(150)을 통해 구동신호를 인가받을 수 있다. 이러한 발광소자(140)는 양자점 바(170)의 특성을 고려하여 상대적으로 단파장을 발생하는 광원을 사용하는 것이 가능하며, 예컨대, 청색 LED, UV LED 등을 사용할 수 있다.The light emitting device 140 is disposed on the side of the light guide plate 130 to generate light. The light emitting device 140 may be mounted on a connection board 150 connected to a main board (not shown) to receive a driving signal through the connection board 150. The light emitting device 140 may use a light source that generates a relatively short wavelength in consideration of the characteristics of the quantum dot bar 170, for example, blue LED, UV LED and the like.

양자점 바(170)는 발광소자(140)와 도광판(130) 사이에 개재되며, 접착층(172, 174)을 통해 발광소자(140) 및 도광판(130)과 접착될 수 있다. 양자점 바(170)와 발광소자(140)를 접착시키는 제1접착층(172)과 양자점 바(170)와 도광판(130)을 접착시키는 제2접착층(174)은 연속적인 형태로 형성될 수 있다. 또한, 제1접착층(172)의 경우, 발광소자(140)와 접착된 영역에만 불연속 적으로 형성할 수 있다.The quantum dot bar 170 may be interposed between the light emitting device 140 and the light guide plate 130, and may be attached to the light emitting device 140 and the light guide plate 130 through the adhesive layers 172 and 174. The first adhesive layer 172 for adhering the quantum dot bar 170 and the light emitting device 140 and the second adhesive layer 174 for adhering the quantum dot bar 170 and the light guide plate 130 may be formed in a continuous form. In addition, the first adhesive layer 172 may be discontinuously formed only in the region bonded to the light emitting device 140.

제1접착층(172)과 제2접착층(174)은 양면 테이프, 레진, 우레탄 등의 광투과성 접착물질로 형성될 수 있다. 접착층(172, 174)을 형성함으로써, 발광소자(140), 양자점 바(170), 도광판(130) 간의 결합이 견고히 유지될 수 있으며, 우레탄, 레진 등의 탄성을 갖는 접착물질을 이용하는 경우 외부 충격에 대한 내구성 또한 높일 수 있다.The first adhesive layer 172 and the second adhesive layer 174 may be formed of a light-transmitting adhesive material such as double-sided tape, resin, urethane, and the like. By forming the adhesive layers 172 and 174, the bonding between the light emitting device 140, the quantum dot bar 170, and the light guide plate 130 may be maintained firmly, and when using an adhesive material having elasticity such as urethane or resin, external impact It can also increase durability.

양자점 바(170)는 백색광을 발광하는 양자점을 포함하여 발광소자(140)에서 발생한 광을 고휘도의 백색광으로 변환하여 도광판(130)의 입사면으로 제공한다. The quantum dot bar 170 includes a quantum dot emitting white light and converts the light generated from the light emitting device 140 into white light having high brightness and provides it to the incident surface of the light guide plate 130.

양자점 바(170)에 형성된 양자점은 10nm 이하의 입자 크기를 가지며, 그 크기에 따라 독특한 전기적 광학적 특성을 갖는다. 예컨대, 대략적인 크기가 55 ~ 65Å인 경우 적색계열, 40 ~ 50Å은 녹색계열, 20 ~ 35Å은 청색계열의 색을 발할 수 있으며, 황색은 적색과 녹색을 발하는 양자점의 중간 크기를 갖는다. 빛의 파장에 따른 스펙트럼이 적색에서 청색으로 변하는 추세에 따라 양자점의 크기는 65Å 정도에서 20Å 정도로 순차적으로 변하는 것으로 파악할 수 있으며, 이 수치는 약간의 차이가 있을 수 있다. The quantum dots formed on the quantum dot bar 170 have a particle size of 10 nm or less, and have unique electrical and optical characteristics according to the size. For example, when the approximate size is 55 ~ 65 Å red color, 40 ~ 50 녹색 green color, 20 to 35 청색 may emit a blue color, yellow has a medium size of the quantum dots emitting red and green. As the spectrum of light varies from red to blue, the size of the quantum dots may be sequentially changed from about 65 Å to about 20 Å, which may be slightly different.

실시예에 따른 백색광을 발광하는 양자점 바(170)를 형성하기 위해서는, 빛의 삼원색인 RGB 혹은, RYGB를 발하는 양자점을 글래스(glass) 등의 투명 기판에 스핀코팅 하거나 프린팅하여 형성할 수 있다. 여기서, 황색(Y)을 발하는 양자점을 더 포함하는 경우 좀 더 천연광에 가까운 백색광을 얻을 수 있다. 양자점을 분산 담채하는 매트릭스(매질)은 가시광 및 자외선 영역(Far UV 포함)의 빛을 발하거나 또는 가시광 영역의 빛에 관하여 투과성이 뛰어난 무기물이나 고분자를 적용할 수 있다. 예컨대, 무기질 실리카, PMMA(polymethylmethacrylate), PDMS(polydimethylsiloxane), PLA(poly lactic acid), 실리콘 고분자 또는 YAG 등이 될 수 있다. In order to form the quantum dot bar 170 emitting white light according to an embodiment, the quantum dots emitting RGB or RYGB, which are three primary colors of light, may be formed by spin coating or printing a transparent substrate such as glass. In this case, when the quantum dot emitting yellow (Y) is further included, white light closer to natural light may be obtained. The matrix (medium) that disperses and fills the quantum dots may emit an inorganic light or a polymer having excellent transmittance with respect to light in the visible or ultraviolet region (including Far UV) or light in the visible region. For example, it may be inorganic silica, polymethylmethacrylate (PMMA), polydimethylsiloxane (PDMS), poly lactic acid (PLA), silicon polymer, or YAG.

도 3은 실시예에 따른 백라이트 유닛의 발광 상태도로서, 백색광의 발광원리를 개념적으로 도시한 것이다.3 is a view illustrating a light emission state of a backlight unit according to an embodiment, conceptually illustrating a light emission principle of white light.

도 3에 도시된 바와 같이, 발광소자(140)에서 발생된 광(L1)은 양자점 바(170)를 투과하여 백색광(L2)의 형태로 도광판(130)으로 전달된다. As shown in FIG. 3, the light L1 generated by the light emitting device 140 passes through the quantum dot bar 170 and is transmitted to the light guide plate 130 in the form of white light L2.

발광소자(140)에서 발생된 광(L1)은, 적용된 발광소자(140)의 특성에 따라 다양한 형태로 발생될 수 있다. 예컨대, 백색광을 생성하기에 상대적으로 유리한 단파장의 광인 청색광의 형태로 발생되어 양자점 바(170)로 제공될 수 있다.Light L1 generated by the light emitting device 140 may be generated in various forms according to the characteristics of the light emitting device 140 applied thereto. For example, the light may be generated in the form of blue light, which is light of a short wavelength, which is relatively advantageous to generate white light, and may be provided to the quantum dot bar 170.

양자점 바(170)에 포함된 양자점(Q)들은 발광소자(140)에서 공급된 광(L1)을 백색광(L2)으로 변환하여 도광판(130)으로 제공한다. 도광판(130)은 양자점 바(170)에서 제공하는 백색광(L2)을 면광원으로 변환하여 표시패널(200)에 제공할 수 있다. The quantum dots Q included in the quantum dot bar 170 convert the light L1 supplied from the light emitting element 140 into white light L2 and provide the light to the light guide plate 130. The light guide plate 130 may convert the white light L2 provided from the quantum dot bar 170 into a surface light source and provide the light to the display panel 200.

백색광의 발광 특성은, 발광소자(140)가 공급하는 광의 파장과 양자점 바(170)에 형성된 양자점(Q)의 특성에 따라 변화하는 것으로서, 발광소자(140)의 종류나 양자점 바(170)의 특성 등은 백색광의 발광이 가능한 다양한 형태로 변형될 수 있다. The light emission characteristic of the white light changes depending on the wavelength of the light supplied from the light emitting element 140 and the characteristics of the quantum dot Q formed on the quantum dot bar 170. The characteristics may be modified in various forms capable of emitting white light.

이상 실시예와 같이, 양자점 바(170)를 이용하여 백색광을 공급하는 경우, 종래의 LED 등의 설계를 변경하지 아니하고도 발광효율이 우수한 백라이트 광을 제공할 수 있다. 또한, 양자점 바(170)를 고정하는 접착층(172, 174)의 구성에 의해 백라이트 유닛의 내구성을 향상시키는 것이 가능하다.As described above, when the white light is supplied using the quantum dot bar 170, it is possible to provide backlight light having excellent luminous efficiency without changing the design of a conventional LED or the like. In addition, it is possible to improve durability of the backlight unit by configuring the adhesive layers 172 and 174 to fix the quantum dot bar 170.

이상에서 실시예를 중심으로 설명하였으나 이는 단지 예시일 뿐 본 발명을 한정하는 것이 아니며, 본 발명이 속하는 분야의 통상의 지식을 가진 자라면 본 실시예의 본질적인 특성을 벗어나지 않는 범위에서 이상에 예시되지 않은 여러 가지의 변형과 응용이 가능함을 알 수 있을 것이다. 예를 들어, 실시예에 구체적으로 나타난 각 구성 요소는 변형하여 실시할 수 있는 것이다. 그리고 이러한 변형과 응용에 관계된 차이점들은 첨부된 청구 범위에서 규정하는 본 발명의 범위에 포함되는 것으로 해석되어야 할 것이다.Although described above with reference to the embodiment is only an example and is not intended to limit the invention, those of ordinary skill in the art to which the present invention does not exemplify the above within the scope not departing from the essential characteristics of this embodiment It will be appreciated that many variations and applications are possible. For example, each component specifically shown in the embodiment can be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

도 1은 실시예에 따른 백라이트 유닛을 포함하는 표시장치의 분해 사시도.1 is an exploded perspective view of a display device including a backlight unit according to an exemplary embodiment.

도 2는 실시예에 따른 백라이트 유닛을 포함하는 표시장치의 측단면도.2 is a side cross-sectional view of a display device including a backlight unit according to an embodiment.

도 3은 실시예에 따른 백라이트 유닛의 발광 상태도.3 is a light emitting state diagram of the backlight unit according to the embodiment;

Claims (8)

도광판;Light guide plate; 상기 도광판의 측면에 배치되어 광을 발생시키는 발광소자;A light emitting device disposed on a side of the light guide plate to generate light; 상기 발광소자와 도광판 사이에 개재되어, 상기 발광소자에서 발생한 광을 백색광으로 변환하여 상기 도광판으로 제공하는 양자점 바를 포함하는 백라이트 유닛.And a quantum dot bar interposed between the light emitting element and the light guide plate to convert the light generated by the light emitting element into white light and provide the light to the light guide plate. 제1항에 있어서,The method of claim 1, 상기 발광소자는,The light emitting device, 청색 발광 다이오드를 포함하는 백라이트 유닛.A backlight unit comprising a blue light emitting diode. 제1항에 있어서,The method of claim 1, 상기 양자점 바와 상기 발광소자를 상호 접착시키는 제1접착층;A first adhesive layer bonding the quantum dot bar and the light emitting device to each other; 상기 양자점 바와 상기 도광판을 상호 접착시키는 제2접착층 중 적어도 어느 하나를 포함하는 백라이트 유닛.And at least one of a second adhesive layer bonding the quantum dot bar and the light guide plate to each other. 제3항에 있어서,The method of claim 3, 상기 제1접착층 및 제2접착층은,The first adhesive layer and the second adhesive layer, 레진, 우레탄, 접착 테이프 중 적어도 어느 하나를 포함하는 백라이트 유닛.A backlight unit comprising at least one of resin, urethane, and adhesive tape. 제1항에 있어서,The method of claim 1, 상기 양자점 바는,The quantum dot bar, 적색, 녹색, 청색을 발하는 양자점 혹은, 적색, 황색, 녹색, 청색을 발하는 양자점을 포함하는 백라이트 유닛.A backlight unit including quantum dots emitting red, green, and blue or quantum dots emitting red, yellow, green, and blue. 도광판;Light guide plate; 상기 도광판의 측면에 배치되어 광을 발생시키는 발광소자;A light emitting device disposed on a side of the light guide plate to generate light; 상기 발광소자와 도광판 사이에 개재되어, 상기 발광소자에서 발생한 광을 백색광으로 변환하여 상기 도광판으로 제공하는 양자점 바;A quantum dot bar interposed between the light emitting device and the light guide plate to convert light generated from the light emitting device into white light and provide the light to the light guide plate; 상기 양자점 바와 상기 발광소자를 상호 접착시키는 제1접착층;A first adhesive layer bonding the quantum dot bar and the light emitting device to each other; 상기 양자점 바와 상기 도광판을 상호 접착시키는 제2접착층을 포함하는 백라이트 유닛.And a second adhesive layer for bonding the quantum dot bar and the light guide plate to each other. 제6항에 있어서,The method of claim 6, 상기 발광소자는, 청색 발광 다이오드를 포함하는 백라이트 유닛.The light emitting device includes a blue light emitting diode. 제6항에 있어서,The method of claim 6, 상기 제1접착층 및 제2접착층은,The first adhesive layer and the second adhesive layer, 레진, 우레탄, 접착 테이프 중 적어도 어느 하나를 포함하는 백라이트 유닛.A backlight unit comprising at least one of resin, urethane, and adhesive tape.
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