KR20070107474A - Backlight unit and liquid crystal display module including the same - Google Patents

Backlight unit and liquid crystal display module including the same Download PDF

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Publication number
KR20070107474A
KR20070107474A KR1020060040029A KR20060040029A KR20070107474A KR 20070107474 A KR20070107474 A KR 20070107474A KR 1020060040029 A KR1020060040029 A KR 1020060040029A KR 20060040029 A KR20060040029 A KR 20060040029A KR 20070107474 A KR20070107474 A KR 20070107474A
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South Korea
Prior art keywords
lamp
liquid crystal
crystal display
backlight unit
light
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KR1020060040029A
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Korean (ko)
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김영규
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삼성전자주식회사
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Priority to KR1020060040029A priority Critical patent/KR20070107474A/en
Publication of KR20070107474A publication Critical patent/KR20070107474A/en

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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
    • G02B6/005—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
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133604—Direct backlight with lamps
    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means

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

Abstract

A backlight unit and a liquid crystal display module including the same are provided to surround a lamp with transparent lamp holders for expanding a light transmission area, thereby preventing generation of dark parts at both sides of a display area of a display panel. A backlight unit includes a lamp(170) formed of Niobium electrodes(174) for generating light through an enlarged light transmission area, and transparent lamp holders(172) formed of transparent rubber silicon materials at both ends of the lamp for expanding the light transmission area to lamp holder areas, which are not overlapped by the electrodes.

Description

백라이트 유닛 및 이를 포함하는 액정표시모듈{BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY MODULE INCLUDING THE SAME}BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY MODULE INCLUDING THE SAME}

도 1은 본 발명의 실시예에 따른 액정표시모듈의 분해 사시도를 나타낸 것이다.1 is an exploded perspective view of a liquid crystal display module according to an exemplary embodiment of the present invention.

도 2는 본 발명의 실시예에 따른 램프의 단면도를 나타낸 이다.2 is a cross-sectional view of a lamp according to an embodiment of the present invention.

<도면의 주요부분에 대한 부호의 간단한 설명><Brief description of symbols for the main parts of the drawings>

170 : 램프 172 : 램프홀더170: lamp 172: lamp holder

812 : 하부기판 814 : 상부기판812: lower substrate 814: upper substrate

820 : 게이트 측 인쇄회로기판 830 : 데이터 측 인쇄회로기판820: gate side printed circuit board 830: data side printed circuit board

840, 850 : 테이프 캐리어 패키지 920 : 바텀샤시840, 850: Tape Carrier Package 920: Bottom Chassis

950 : 인버터 952, 954 : 와이어950: Inverter 952, 954: Wire

980 : 탑샤시 3000 : 액정표시모듈980: top chassis 3000: liquid crystal display module

본 발명은 액정표시패널 코너부의 암부를 개선하기 위한 백라이트 유닛 및 이를 포함하는 액정표시모듈에 관한 것이다.The present invention relates to a backlight unit for improving a dark portion of a corner portion of a liquid crystal display panel and a liquid crystal display module including the same.

액정표시모듈(Liquid Crystal Display Module)은 매트릭스 형태로 배열된 다수의 액정셀들과 이들 액정셀들 각각에 공급될 비디오 신호를 절환하기 위한 다수의 제어용 스위치들로 구성된 액정패널에 의해 백라이트 유닛에서 공급되는 광의 투과량이 조절되어 화면에 원하는 화상을 표시하게 된다.The liquid crystal display module is supplied from the backlight unit by a liquid crystal panel composed of a plurality of liquid crystal cells arranged in a matrix and a plurality of control switches for switching the video signal to be supplied to each of the liquid crystal cells. The amount of light transmitted is controlled to display a desired image on the screen.

여기서, 백라이트 유닛은 빛을 생성하는 램프와, 도광판 전면과 표시패널 사이에는 도광판으로부터 나오는 빛을 확산시켜 휘도를 향상시키는 확산시트와, 도광판으로부터 나오는 빛을 집광시키는 프리즘 시트와, 확산시트와 프리즘 시트를 보호하기위한 보호시트를 구비한다. The backlight unit includes a lamp for generating light, a diffusion sheet for diffusing light from the light guide plate to improve brightness between the front panel and the display panel, a prism sheet for condensing light from the light guide plate, a diffusion sheet and a prism sheet. It is equipped with a protective sheet to protect the.

여기서, 램프는 그 램프의 양단을 감싸도록 형성된 램프홀더에 의해 고정된다. 그러나 램프홀더가 불투명한 재질로 이루고 있기 때문에 램프에서 발생된 광이 램프홀더를 통과하지 못한다. 이에 따라, 램프홀더에 중첩되는 액정표시패널의 양쪽 단부에 암부가 발생하는 문제점이 있다.Here, the lamp is fixed by a lamp holder formed to surround both ends of the lamp. However, because the lamp holder is made of an opaque material, light generated from the lamp cannot pass through the lamp holder. Accordingly, there is a problem that dark portions are generated at both ends of the liquid crystal display panel overlapping the lamp holder.

본 발명이 이루고자 하는 기술적 과제는 액정표시패널 코너부의 암부를 개선하기 위한 백라이트 유닛 및 이를 포함하는 액정표시모듈을 제공하는데 있다.An object of the present invention is to provide a backlight unit for improving a dark portion of a corner of a liquid crystal display panel and a liquid crystal display module including the same.

상기 기술적 과제를 달성하기 위하여, 본 발명에 따른 백라이트 유닛은 빛을 생성하는 램프와; 상기 램프 양측단에 형성된 투명램프홀더를 구비하는 것을 특징으로 한다.In order to achieve the above technical problem, the backlight unit according to the present invention includes a lamp for generating light; And a transparent lamp holder formed at both ends of the lamp.

여기서, 상기 투명 램프홀더는 투명 고무 실리콘 재질인 것을 특징으로 한다.Here, the transparent lamp holder is characterized in that the transparent rubber silicon material.

또한, 상기 램프는 니오븀(Niobium : Nb)전극의 재질인 것을 특징으로 한다.In addition, the lamp is characterized in that the material of niobium (Niobium: Nb) electrode.

본 발명에 따른 액정표시모듈은 화상을 표시하는 액정표시패널과; 상기 액정표시패널로 빛을 제공하는 백라이트 유닛을 포함하며, 상기 백라이트 유닛은 빛을 생성하는 램프와; 상기 램프 양측단에 형성된 투명램프홀더를 구비하는 것을 특징으로 한다.A liquid crystal display module according to the present invention includes a liquid crystal display panel for displaying an image; And a backlight unit for providing light to the liquid crystal display panel, wherein the backlight unit comprises: a lamp for generating light; And a transparent lamp holder formed at both ends of the lamp.

상기 기술적 과제 외에 본 발명의 다른 기술적 과제 및 이점들은 첨부도면을 참조하여 본 발명의 바람직한 실시예에 대한 설명을 통해 명백하게 드러나게 될 것이다.Other technical problems and advantages of the present invention in addition to the above technical problem will be apparent from the description of the preferred embodiment of the present invention with reference to the accompanying drawings.

이하, 본 발명의 바람직한 실시에를 도 1 및 도 2를 참조하여 상세히 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 and 2.

도 1은 본 발명의 실시예에 따른 액정표시모듈의 분해 사시도를 나타낸 것이다.1 is an exploded perspective view of a liquid crystal display module according to an exemplary embodiment of the present invention.

도 1에 도시된 바와 같이 액정표시모듈(3000)은 화상을 구현하는 디스플레이 유닛(800)과, 빛을 생성하는 백라이트 유닛과, 백라이트 유닛과 디스플레이 유닛 (800)을 안착시키는 바텀샤시(920)와, 바텀샤시(920)와 결합하는 탑샤시(980)를 포함한다. As shown in FIG. 1, the liquid crystal display module 3000 may include a display unit 800 for implementing an image, a backlight unit for generating light, a bottom chassis 920 for mounting the backlight unit, and a display unit 800. A top chassis 980 is coupled to the bottom chassis 920.

디스플레이 유닛(800)은 영상을 표시하는 액정표시패널(810), 액정표시패널(810)을 구동하기 위한 구동신호를 제공하는 데이터 및 게이트 인쇄회로기판(820, 830)을 포함한다. 여기서, 데이터 및 게이트 인쇄회로기판(820, 830)은 데이터 테이프 캐리어 패키지(Tape Carrier Package : 이하, TCP라 칭함)(840) 및 게이트 TCP(850)를 통해 액정표시패널(810)과 전기적으로 연결된다. The display unit 800 includes a liquid crystal display panel 810 for displaying an image, data for providing a driving signal for driving the liquid crystal display panel 810, and gate printed circuit boards 820 and 830. Here, the data and gate printed circuit boards 820 and 830 are electrically connected to the liquid crystal display panel 810 through a data tape carrier package (hereinafter referred to as TCP) 840 and a gate TCP 850. do.

액정표시패널(810)은 박막 트랜지스터(Thin Film Transistor : 이하, TFT라 칭함) 기판(812), TFT 기판(812)과 대향하여 결합되는 컬러필터 기판(814) 및 두 기판(812, 814) 사이에 형성된 액정을 포함한다. The liquid crystal display panel 810 includes a thin film transistor (hereinafter, referred to as TFT) substrate 812, a color filter substrate 814 coupled to the TFT substrate 812, and between two substrates 812 and 814. It includes a liquid crystal formed in.

TFT 기판(812)은 스위칭 소자인 TFT가 매트릭스 형태로 형성된다. 이 TFT들의 소스 및 게이트 단자에는 각각 데이터 및 게이트 라인이 연결되고, 드레인 단자에는 투명한 도전성 재질로 이루어진 화소전극이 연결된다. In the TFT substrate 812, TFTs, which are switching elements, are formed in a matrix form. Data and gate lines are respectively connected to the source and gate terminals of the TFTs, and a pixel electrode made of a transparent conductive material is connected to the drain terminal.

컬러필터 기판(814)은 색화소인 RGB 화소가 박막공정에 의해 형성된 기판이다. 이 컬러필터 기판(814)에는 투명한 도전성 재질로 이루어진 공통전극이 형성된다. The color filter substrate 814 is a substrate in which RGB pixels as color pixels are formed by a thin film process. The common filter made of a transparent conductive material is formed on the color filter substrate 814.

이러한 구성을 갖는 액정표시패널(810)은 TFT의 게이트 단자 및 소오스 단자에 전원이 인가되어 TFT가 턴온 (turn on)되면, 화소전극과 컬러필터 기판(814)의 공통전극 사이에는 전계가 형성된다. In the liquid crystal display panel 810 having such a configuration, when power is applied to the gate terminal and the source terminal of the TFT and the TFT is turned on, an electric field is formed between the pixel electrode and the common electrode of the color filter substrate 814. .

백라이트 유닛은 빛을 생성하는 램프(170)와, 램프(170)로부터 생성된 빛을 평면광원으로 변환하여 액정표시패널쪽으로 출사시키는 도광판(120)과, 도광판(120)으로부터 새어나온 빛을 액정표시패널쪽으로 반사시키는 반사막(128)과, 도광판(120)으로부터 출사된 빛을 확산시켜 빛의 휘도를 향샹시키는 확산 시트(122)와, 도광판(120)으로부터 나오는 빛을 집광시켜 직진성 휘도를 향상시키는 프리즘시트(124)와, 확산시트(122)와 프리즘시트(124)들의 손상을 방지하기 위한 보호막(126)을 포함한다. The backlight unit includes a lamp 170 for generating light, a light guide plate 120 for converting the light generated from the lamp 170 into a plane light source, and outputting the light toward the liquid crystal display panel, and a light leaking from the light guide plate 120. A reflective film 128 for reflecting toward the panel, a diffusion sheet 122 for diffusing the light emitted from the light guide plate 120 to enhance the brightness of the light, and a prism for condensing the light emitted from the light guide plate 120 to improve the linear brightness. And a protective film 126 for preventing damage to the sheet 124 and the diffusion sheet 122 and the prism sheet 124.

램프(170)는 도 2에 도시된 바와 같이 램프(170)의 양끝단이 투명 램프홀더(172)에 고정됨으로써 외부로부터 충격이 가해지더라도 안정적인 실장상태를 유지할 수 있다. As shown in FIG. 2, both ends of the lamp 170 may be fixed to the transparent lamp holder 172 to maintain a stable mounting state even when an impact is applied from the outside.

투명 램프홀더(172)는 투명 고무 실리콘 재질로 형성되어 램프(170)에서 생성된 광이 램프홀더를 통해 도광판(120)으로 입사된다. 이에 따라, 광투과 영역(L1)은 램프전극(174)과 중첩되는 영역을 제외한 나머지 영역으로 종래에 비해 램프전극(174)과 비중첩되는 램프홀더영역까지 신장된다.The transparent lamp holder 172 is formed of a transparent rubber silicon material, and light generated by the lamp 170 is incident to the light guide plate 120 through the lamp holder. Accordingly, the light transmissive region L1 is a region other than the region overlapping the lamp electrode 174 and extends to the lamp holder region that is not overlapped with the lamp electrode 174 as compared with the related art.

한편, 램프(172)는 광을 생성하기 위해 양끝단에 형성되는 램프전극(174)을 구비한다. 램프전극(174)은 니켈(Nickel : Ni)로 이루어진 램프전극보다 길이를 짧게 형성할 수 있는 니오븀(Niobium : Nb)전극(174)으로 형성된다. 이에 따라, 니오븀 전극(174)을 가지는 램프(170)는 니켈전극을 가지는 램프(170)보다 광투과 영역(L1)이 넓어진다. On the other hand, the lamp 172 includes a lamp electrode 174 formed at both ends to generate light. The lamp electrode 174 is formed of a niobium (Nb) electrode 174 capable of forming a shorter length than a lamp electrode made of nickel (Ni). Accordingly, the lamp 170 having the niobium electrode 174 has a wider light transmission region L1 than the lamp 170 having the nickel electrode.

인버터(950)는 바텀샤시(900)의 배면에 배치되며, 램프(100)를 구동하기 위한 방전 전압을 발생시킨다. 상기 방전 전압은 초기 방전을 위한 방전 개시 전압 및 방전 상태의 유지를 위한 방전 유지 전압을 포함한다. 인버터(950)로부터 발생된 방전 전압은 전원 인가선(952, 954)들을 통해 램프(100)에 인가된다. 즉, 전원 인가선(952, 954)들은 램프(100)의 전극(110)에 연결된다.The inverter 950 is disposed on the rear surface of the bottom chassis 900 and generates a discharge voltage for driving the lamp 100. The discharge voltage includes a discharge start voltage for initial discharge and a discharge sustain voltage for maintaining a discharge state. The discharge voltage generated from the inverter 950 is applied to the lamp 100 through the power supply lines 952 and 954. That is, the power supply lines 952 and 954 are connected to the electrode 110 of the lamp 100.

바텀샤시(920)는 디스플레이 유닛과 백라이트 유닛을 수납한다. The bottom chassis 920 accommodates a display unit and a backlight unit.

탑 샤시(980)는 액정표시패널(810)의 에지부를 감싸면서 바텀샤시(900)에 결합된다. 탑 샤시(980)는 외부 충격에 대한 액정표시패널(810)의 파손을 방지하고, 액정표시패널(810)이 바텀샤시(900)로부터 이탈되는 것을 방지한다. The top chassis 980 is coupled to the bottom chassis 900 while surrounding the edge portion of the liquid crystal display panel 810. The top chassis 980 prevents the liquid crystal display panel 810 from being damaged by an external impact and prevents the liquid crystal display panel 810 from being separated from the bottom chassis 900.

상술한 바와 같이 본 발명에 따른 백라이트 유닛 및 이를 포함하는 액정표시모듈은 Nb 전극 사용시 램프의 측면을 반원 형태로 감싸고 있는 실리콘 재질인 램프 홀더를 구비함으로써, 표시패널의 표시영역부분의 양쪽 단부에 암부가 발생하는 것을 방지함으로써 광량을 늘릴 수 있다.As described above, the backlight unit and the liquid crystal display module including the same according to the present invention include a lamp holder made of a silicon material that surrounds the side of the lamp in a semicircle shape when the Nb electrode is used. The amount of light can be increased by preventing from occurring.

또한, 기존의 니켈전극보다 전극 길이가 짧은 니오븀전극을 사용함으로써 광차단 영역이 감소하고 광투과 영역이 늘어남으로써 광량을 늘릴 수 있다.In addition, by using a niobium electrode having a shorter electrode length than a conventional nickel electrode, the light blocking area is reduced and the light transmitting area is increased, thereby increasing the amount of light.

이상 설명한 내용을 통해 당업자라면 본 발명의 기술 사상을 일탈하지 아니하는 범위에서 다양한 변경 및 수정이 가능함을 알 수 있을 것이다. 따라서, 본 발명의 기술적 범위는 명세서의 설명에 기재된 내용으로 한정되는 것이 아니라 특허 청구의 범위에 의해 정해져야만 할 것이다. Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the description of the specification but should be defined by the claims.

Claims (6)

빛을 생성하는 램프와;A lamp for generating light; 상기 램프 양측단에 형성된 투명램프홀더를 구비하는 것을 특징으로 하는 백라이트 유닛.And a transparent lamp holder formed at both ends of the lamp. 제 1 항에 있어서,The method of claim 1, 상기 투명 램프홀더는 투명 고무 실리콘 재질인 것을 특징으로 하는 백라이트 유닛.The transparent lamp holder is a back light unit, characterized in that the transparent rubber silicon material. 제 1 항에 있어서,The method of claim 1, 상기 램프는 니오븀(Niobium : Nb)전극의 재질인 것을 특징으로 하는 백라이트 유닛.The lamp is a backlight unit, characterized in that the material of niobium (Niobium: Nb) electrode. 화상을 표시하는 액정표시패널과;A liquid crystal display panel which displays an image; 상기 액정표시패널로 빛을 제공하는 백라이트 유닛을 포함하며,It includes a backlight unit for providing light to the liquid crystal display panel, 상기 백라이트 유닛은The backlight unit 빛을 생성하는 램프와;A lamp for generating light; 상기 램프 양측단에 형성된 투명램프홀더를 구비하는 것을 특징으로 하는 액정표시모듈.And a transparent lamp holder formed at both ends of the lamp. 제 4 항에 있어서,The method of claim 4, wherein 상기 투명 램프홀더는 투명 고무 실리콘 재질인 것을 특징으로 하는 액정표시모듈.The transparent lamp holder is a liquid crystal display module, characterized in that the transparent rubber silicon material. 제 4 항에 있어서,The method of claim 4, wherein 상기 램프는 니오븀(Niobium : Nb)전극의 재질인 것을 특징으로 하는 액정표시모듈.The lamp is a liquid crystal display module, characterized in that the material of niobium (Niobium: Nb) electrode.
KR1020060040029A 2006-05-03 2006-05-03 Backlight unit and liquid crystal display module including the same KR20070107474A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102681255A (en) * 2012-03-01 2012-09-19 友达光电股份有限公司 Display device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102681255A (en) * 2012-03-01 2012-09-19 友达光电股份有限公司 Display device

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