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KR20110070542A - LCD Display - Google Patents

LCD Display Download PDF

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Publication number
KR20110070542A
KR20110070542A KR1020090127400A KR20090127400A KR20110070542A KR 20110070542 A KR20110070542 A KR 20110070542A KR 1020090127400 A KR1020090127400 A KR 1020090127400A KR 20090127400 A KR20090127400 A KR 20090127400A KR 20110070542 A KR20110070542 A KR 20110070542A
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South Korea
Prior art keywords
liquid crystal
crystal display
system case
display panel
panel
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KR1020090127400A
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Korean (ko)
Inventor
박대성
안종기
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엘지디스플레이 주식회사
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Priority to KR1020090127400A priority Critical patent/KR20110070542A/en
Publication of KR20110070542A publication Critical patent/KR20110070542A/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
    • G02F1/133308—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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133322—Mechanical guidance or alignment of LCD panel support components
    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • 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
    • 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
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13454—Drivers integrated on the active matrix substrate
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Liquid Crystal (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)

Abstract

본 발명은 구조를 간소화할 수 있을 뿐만 아니라 슬림화에 유리한 액정표시장치가 개시된다.The present invention discloses a liquid crystal display device which can simplify the structure and is advantageous for slimming.

개시된 본 발명의 액정표시장치는 액정표시패널와, 액정표시패널에 광을 제공하는 백라이트 유닛과, 액정표시패널의 하부면 가장자리를 지지하는 패널 가이드와, 액정표시패널의 가장자리를 감싸는 상부 시스템 케이스 및 백라이트 유닛이 수납되고, 상부 시스템 케이스와 결합되는 하부 시스템 케이스를 포함하고, 하부 시스템 케이스 상에는 발광 다이오드가 실장된 광원 유닛이 직접 고정되는 것을 특징으로 한다.The disclosed liquid crystal display device includes a liquid crystal display panel, a backlight unit for providing light to the liquid crystal display panel, a panel guide supporting the lower edge of the liquid crystal display panel, an upper system case and a backlight surrounding the edge of the liquid crystal display panel. A unit is accommodated, and includes a lower system case coupled to the upper system case, and a light source unit mounted with a light emitting diode is directly fixed on the lower system case.

Description

액정표시장치{LIQUID CRYSTAL DISPLAY DEVICE}[0001] LIQUID CRYSTAL DISPLAY DEVICE [0002]

본 발명은 액정표시장치에 관한 것으로, 특히 구조를 간소화할 수 있을 뿐만 아니라 슬림화에 유리한 액정표시장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device which not only simplifies a structure but is advantageous for slimming.

통상적으로, 액정표시장치(LCD: liquid crystal display)는 경량, 박형, 저 소비 전력구동 등의 특징으로 인해 그 응용범위가 점차 넓어지고 있는 추세에 있다. 이러한 추세에 따라 액정표시장치는 사무자동화 기기, 오디오/비디오 기기 등에 이용되고 있다. 상기 액정표시장치는 매트릭스 형태로 배열된 다수의 제어용 스위치들에 인가되는 영상신호에 따라 투과량이 조절되어 화면에 원하는 화상을 표시하게 된다.In general, liquid crystal displays (LCDs) have tended to be gradually widened due to their light weight, thinness, and low power consumption. In accordance with this trend, liquid crystal displays are used in office automation equipment, audio / video equipment, and the like. The liquid crystal display device displays a desired image on a screen by adjusting a transmission amount according to image signals applied to a plurality of control switches arranged in a matrix form.

상기 액정표시장치는 자발광 표시장치가 아니기 때문에 영상이 디스플레이되는 액정표시패널의 배면에 광을 제공하는 백라이트 유닛(backlight unit)이 구비된다.Since the liquid crystal display device is not a self-luminous display device, a backlight unit is provided to provide light to the rear surface of the liquid crystal display panel on which an image is displayed.

상기 백라이트 유닛은 광원의 위치에 따라 직하(direct) 방식과 에지(edge) 방식의 두 종류가 있다.The backlight unit has two types, a direct method and an edge method, depending on the position of the light source.

상기 에지 방식은 평판 측면에 광원을 배치한 것으로서, 광원으로부터 발광 된 광을 도광판을 이용하여 액정표시패널 전체의 면으로 조사한다. 한편, 직하 방식은 액정표시패널의 배면에 다수의 광원을 배치하여 액정표시패널의 직하에서 광을 직접 조사하는 방식으로 에지 방식과 비교하여 다수의 광원에 의해 휘도를 높일 수 있고, 발광 면을 넓게 할 수 있는 장점이 있다.In the edge method, a light source is disposed on a side of a flat plate, and the light emitted from the light source is irradiated to the entire surface of the liquid crystal display panel using a light guide plate. On the other hand, in the direct method, a plurality of light sources are disposed on the back of the liquid crystal display panel to directly irradiate light directly under the liquid crystal display panel, so that the luminance can be increased by a plurality of light sources compared to the edge method, and the light emitting surface is wider. There is an advantage to this.

액정표시장치의 크기가 대형화됨에 따라 백라이트 유닛의 크기도 대형화되고 있다. 그 결과, 액정표시장치는 직하 방식의 백라이트 유닛을 널리 채용하고 있다.As the size of the liquid crystal display device increases, the size of the backlight unit also increases. As a result, the liquid crystal display device employs a backlight unit of a direct type.

일반적인 직하 방식의 액정표시장치에 구비된 백라이트 유닛은 액정표시패널의 배면에 일정한 간격을 두고 복수의 광원이 배치되며, 상기 복수의 광원 상에 광을 확산 및 집광시키는 확산 플레이트 및 광학 시트들이 배치된 구조로 이루어진다.In the backlight unit included in the general direct-type liquid crystal display device, a plurality of light sources are disposed on the rear surface of the liquid crystal display panel at regular intervals, and diffusion plates and optical sheets for diffusing and condensing light are disposed on the plurality of light sources. Made of structure.

일반적인 액정표시장치는 액정표시패널의 상부면 가장자리를 감싸는 탑 케이스와 광원 및 광학 시트들을 수납하는 바텀커버가 결합되어 액정표시모듈의 조립이 완료된다.In general, a liquid crystal display device is assembled with a top case surrounding an upper edge of a liquid crystal display panel and a bottom cover for accommodating a light source and an optical sheet.

상기 액정표시모듈은 바텀커버의 하부면에 시스템 구동부가 구비되고, 액정표시모듈의 상부면 가장자리를 감싸는 절연재질의 상부 시스템 케이스와 상기 액정표시모듈의 하부면 및 측면을 감싸는 절연재질의 하부 시스템 케이스가 조립되어 액정표시장치의 제조공정이 완료된다.The liquid crystal display module is provided with a system driver on the bottom surface of the bottom cover, the upper system case of the insulating material surrounding the upper edge of the liquid crystal display module and the lower system case of the insulating material surrounding the lower surface and the side of the liquid crystal display module. Is assembled to complete the manufacturing process of the liquid crystal display device.

이상에서와 같이 일반적인 액정표시장치는 구성이 복잡하여 조립성이 저하되며, 복잡한 구성에 의해 슬림화의 어려움이 있었다. 즉, 일반적인 액정표시장치는 액정표시패널 및 백라이트 유닛 외에 탑 케이스, 바텀커버 및 상/하부 시스템 케이 스가 액정표시장치의 외각에 구비되어 슬림화 구현이 어려운 문제가 있었다.As described above, a general liquid crystal display device has a complicated configuration, which degrades assembly, and has a difficulty in slimming due to a complicated configuration. That is, in the general liquid crystal display device, in addition to the liquid crystal display panel and the backlight unit, a top case, a bottom cover, and an upper / lower system case are provided on the outer surface of the liquid crystal display device, making it difficult to implement slimming.

본 발명은 구조를 간소화할 수 있을 뿐만 아니라 슬림화에 유리한 액정표시장치를 제공함에 그 목적이 있다.The present invention has the object of providing a liquid crystal display device which can simplify the structure and is advantageous for slimming.

본 발명의 일 실시예에 따른 액정표시장치는,Liquid crystal display device according to an embodiment of the present invention,

액정표시패널; 상기 액정표시패널에 광을 제공하는 백라이트 유닛; 상기 액정표시패널의 하부면 가장자리를 지지하는 패널 가이드; 상기 액정표시패널의 가장자리를 감싸는 상부 시스템 케이스; 및 상기 백라이트 유닛이 수납되고, 상기 상부 시스템 케이스와 결합되는 하부 시스템 케이스를 포함하고, 상기 하부 시스템 케이스 상에는 발광 다이오드가 실장된 광원 유닛이 직접 고정되는 것을 특징으로 한다.A liquid crystal display panel; A backlight unit providing light to the liquid crystal display panel; A panel guide supporting an edge of a lower surface of the liquid crystal display panel; An upper system case surrounding an edge of the liquid crystal display panel; And a lower system case accommodating the backlight unit and coupled to the upper system case, and a light source unit having a light emitting diode mounted thereon is directly fixed on the lower system case.

본 발명은 본 발명의 일 실시예에 따른 액정표시장치는 하부 시스템 케이스 상에 광원 유닛이 직접 고정되고, 확산 플레이트, 광학 시트들, 패널 가이드 및 액정표시패널이 순차적으로 고정되고, 상부 시스템 케이스가 상기 하부 시스템 케이스와 고정되는 구조로써, 일반적인 액정표시장치의 탑 케이스 및 바텀커버를 삭제함으로써, 구조를 간소화할 수 있는 장점을 가진다.According to an exemplary embodiment of the present invention, a liquid crystal display according to an exemplary embodiment of the present invention includes a light source unit directly fixed on a lower system case, a diffusion plate, optical sheets, a panel guide, and a liquid crystal display panel sequentially fixed, and an upper system case. As a structure fixed to the lower system case, the structure may be simplified by deleting the top case and the bottom cover of the general liquid crystal display.

또한, 본 발명은 일반적인 액정표시장치의 탑 케이스 및 바텀커버가 삭제된 구조로써, 슬림화에 유리한 장점을 가진다.In addition, the present invention has a structure in which the top case and the bottom cover of the general liquid crystal display device are deleted, which is advantageous in slimming.

첨부한 도면을 참조하여 본 발명에 따른 실시 예를 상세히 설명하도록 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 일 실시예에 따른 액정표시장치를 도시한 분해 사시도이고, 도 2는 도 1의 Ⅰ-Ⅰ'라인을 따라 절단한 액정표시장치의 단면도이다.1 is an exploded perspective view illustrating a liquid crystal display according to an exemplary embodiment of the present invention, and FIG. 2 is a cross-sectional view of the liquid crystal display taken along the line II ′ of FIG. 1.

도 1 및 도 2에 도시된 바와 같이, 본 발명의 일 실시예에 따른 액정표시장치는 영상이 디스플레이되는 액정표시패널(110)과, 상기 액정표시패널(110)에 광을 제공하는 백라이트 유닛(120)과, 상기 액정표시패널(110)의 하부 가장자리를 지지하는 패널 가이드(118)를 포함한다.1 and 2, a liquid crystal display according to an exemplary embodiment of the present invention includes a liquid crystal display panel 110 displaying an image and a backlight unit providing light to the liquid crystal display panel 110. 120 and a panel guide 118 supporting the lower edge of the liquid crystal display panel 110.

또한, 본 발명의 액정표시장치는 액정표시패널(110), 백라이트 유닛(120) 및 패널 가이드(118)를 수납하는 상/하부 시스템 케이스(100, 180)를 더 포함하고, 상기 하부 시스템 케이스(180)의 하부면에는 액정표시패널(110)을 구동시키는 패널 구동부와 시스템 구동부가 통합된 제1 구동 PCB(190)와, 백라이트 유닛(120)을 구동시키는 제2 구동 PCB(191)가 구비된다.In addition, the liquid crystal display of the present invention further includes upper and lower system cases 100 and 180 for accommodating the liquid crystal display panel 110, the backlight unit 120, and the panel guide 118. The lower surface of the 180 may include a first driving PCB 190 integrating a panel driver and a system driving unit for driving the liquid crystal display panel 110, and a second driving PCB 191 for driving the backlight unit 120. .

액정표시패널(110)은 상세히 도시되지는 않았지만, 서로 대향하여 균일한 셀 갭이 유지되도록 합착된 박막 트랜지스터(TFT: thin film transistor) 기판(113) 및 컬러필터 기판(111)과, 상기 두 기판 사이에 개재된 액정층을 포함한다.Although not shown in detail, the liquid crystal display panel 110 may be a thin film transistor (TFT) substrate 113 and a color filter substrate 111 bonded together to maintain a uniform cell gap facing each other, and the two substrates. It includes a liquid crystal layer interposed therebetween.

박막 트랜지스터 기판(113)은 다수의 게이트 라인이 형성되고, 상기 다수의 게이트 라인과 교차하는 다수의 데이터 라인이 형성되며, 상기 게이트 라인과 데이터 라인의 교차영역에 박막 트랜지스터(TFT)가 형성된다.In the thin film transistor substrate 113, a plurality of gate lines are formed, a plurality of data lines intersecting the plurality of gate lines are formed, and a thin film transistor TFT is formed at an intersection area of the gate line and the data line.

컬러필터 기판(111)은 일정간격 이격되어 컬러필터가 형성되고, 상기 컬러필 터 사이에 블랙 매트릭스가 형성된다.The color filter substrate 111 is spaced at a predetermined interval to form a color filter, and a black matrix is formed between the color filters.

액정표시패널(110)의 가장자리에는 게이트 라인에 스캔신호를 공급하는 게이트 구동 PCB(gate driving printed circuit board, 102)와, 데이터 라인에 데이터 신호를 공급하는 데이터 구동 PCB(data driving printed circuit board, 103)가 구비된다.A gate driving printed circuit board (102) for supplying a scan signal to a gate line is provided at an edge of the liquid crystal display panel 110, and a data driving printed circuit board (101) for supplying a data signal to a data line. ) Is provided.

상기 게이트 및 데이터 구동 PCB(102, 103)는 COF(Chip on film, 105)에 의해 액정표시패널(110)과 전기적으로 연결된다. 여기서, 상기 COF(105)는 TCP(TapeCarrier Package)로 변경될 수 있다.The gate and data driving PCBs 102 and 103 are electrically connected to the liquid crystal display panel 110 by a chip on film 105. Here, the COF 105 may be changed to a tape carrier package (TCP).

백라이트 유닛(120)은 20인치 이상의 대형 액정표시장치에 구비되는 직하 방식을 일 예로 설명하도록 한다.The backlight unit 120 will be described as an example of a direct method provided in a large liquid crystal display device of 20 inches or more.

백라이트 유닛(120)은 일정한 간격을 두고 배치된 복수의 광원 유닛(150)과, 상기 복수의 광원 유닛(150) 상에 배치되어 광을 1차 확산시키는 확산 플레이트(131)와, 상기 확산 플레이트(131) 상에 배치되어 광을 집광 및 2차 확산시키는 광학 시트들(130)과, 상기 복수의 광원 유닛(150) 하부에 배치되어 복수의 광원(150)의 하부방향으로 진행하는 광을 액정표시패널(110) 방향으로 반사시키는 반사시트(170)를 포함한다.The backlight unit 120 includes a plurality of light source units 150 disposed at regular intervals, a diffusion plate 131 disposed on the plurality of light source units 150 to diffuse light primarily, and the diffusion plate ( The optical sheets 130 disposed on the light emitting unit 131 and converging and secondly diffusing light, and light disposed under the plurality of light source units 150 and traveling in a lower direction of the plurality of light sources 150. The reflective sheet 170 reflects toward the panel 110.

상기 광원 유닛(150)은 인쇄회로기판(151)과, 상기 인쇄회로기판(151) 상에 실장된 복수의 발광 다이오드(153)를 포함한다.The light source unit 150 includes a printed circuit board 151 and a plurality of light emitting diodes 153 mounted on the printed circuit board 151.

본 발명의 액정표시패널(110) 및 백라이트 유닛(120)은 하부 시스템 케이스(180) 상에 구비된다.The liquid crystal display panel 110 and the backlight unit 120 of the present invention are provided on the lower system case 180.

하부 시스템 케이스(180)는 상기 반사시트(170) 및 복수의 광원 유닛(150)이 순차적으로 수납된다.The lower system case 180 may sequentially store the reflective sheet 170 and the plurality of light source units 150.

여기서, 상기 반사시트(170) 및 복수의 광원 유닛(150)은 하부 시스템 케이스(180) 상에 고정된다.Here, the reflective sheet 170 and the plurality of light source units 150 are fixed on the lower system case 180.

즉, 본 발명의 광원 유닛(150)은 후크 및 스크류와 같은 고정부재(미도시)를 이용하여 상기 하부 시스템 케이스(180)에 직접 고정된다.That is, the light source unit 150 of the present invention is directly fixed to the lower system case 180 by using a fixing member (not shown) such as a hook and a screw.

하부 시스템 케이스(180)의 양측에는 상기 확산 플레이트(160)를 지지하고, 패널 가이드(118)와의 결합을 위해 상부방향으로 돌출된 돌출부(181)를 포함한다.Both sides of the lower system case 180 support the diffusion plate 160, and include protrusions 181 protruding upward for engagement with the panel guide 118.

상기 돌출부(181)는 하부 시스템 케이스(180)의 금형공정을 통해 형성되는 것으로 하부 시스템 케이스(180)의 상부방향으로 돌출된 구조로써, 돌출부(181)에 의해 홈(183)이 형성된다.The protrusion 181 is formed through a mold process of the lower system case 180 and protrudes in an upper direction of the lower system case 180, and a groove 183 is formed by the protrusion 181.

상기 돌출부(181)의 외측면은 상기 패널 가이드(118)의 내측면과 면 접촉된다.The outer surface of the protrusion 181 is in surface contact with the inner surface of the panel guide 118.

상기 돌출부(181)의 상부면은 상기 확산 플레이트(160)의 가장자리와 대응된다.An upper surface of the protrusion 181 corresponds to an edge of the diffusion plate 160.

본 발명의 일 실시예에서는 하부 시스템 케이스(180)의 양측에 돌출부(181)가 형성된 구조를 한정하여 설명하고 있지만, 이에 한정하지 않고, 돌출부는 하부 시스템 케이스의 모든 측면에 형성될 수 있다.In an embodiment of the present invention, the structure in which the protrusions 181 are formed on both sides of the lower system case 180 is described.

하부 시스템 케이스(180)의 양측 끝단은 상기 상부 시스템 케이스(100)의 하부면 가장자리와 결합된다.Both ends of the lower system case 180 are coupled to the lower surface edge of the upper system case 100.

하부 시스템 케이스(180)의 후면에는 제1 및 제2 구동 PCB(190, 191)가 일정 간격 이격되도록 구비된다.The rear surface of the lower system case 180 is provided so that the first and second driving PCBs 190 and 191 are spaced apart from each other by a predetermined interval.

제1 구동 PCB(190)에는 액정표시패널(110)을 구동시키는 패널 구동부와, 외부의 신호에 따라 상기 패널 구동부를 제어하는 시스템 구동부가 실장된다.A panel driver for driving the liquid crystal display panel 110 and a system driver for controlling the panel driver according to an external signal are mounted on the first driving PCB 190.

제2 구동 PCB(191)에는 복수의 발광 다이오드(153)를 구동시키기 위한 LED 구동 드라이버가 실장된다.The LED driving driver for driving the plurality of light emitting diodes 153 is mounted on the second driving PCB 191.

이상에서는 직하 방식의 액정표시장치의 구조를 한정하여 설명하고 있지만, 이에 한정하지 않고, 하부 시스템 케이스(180)의 돌출부(181) 내측면에 광원 유닛이 배치되고, 상기 광원 유닛과 나란하게 도광판이 배치되는 에지 방식의 액정표시장치도 적용될 수 있다.Although the structure of the direct type liquid crystal display device has been described above, the light source unit is disposed on the inner side of the protrusion 181 of the lower system case 180, and the light guide plate is parallel to the light source unit. An edge type liquid crystal display device may also be applied.

이상에서 설명한 바와 같이, 본 발명의 일 실시예에 따른 액정표시장치는 하부 시스템 케이스(180) 상에 광원 유닛(150)이 직접 고정되고, 확산 플레이트(160), 광학 시트들(130), 패널 가이드(118) 및 액정표시패널(110)이 순차적으로 고정되고, 상부 시스템 케이스(100)가 상기 하부 시스템 케이스(180)와 고정되는 구조로써, 일반적인 액정표시장치의 탑 케이스 및 바텀커버를 삭제함으로써, 구조를 간소화할 수 있는 장점을 가진다.As described above, in the liquid crystal display according to the exemplary embodiment, the light source unit 150 is directly fixed on the lower system case 180, the diffusion plate 160, the optical sheets 130, and the panel. The guide 118 and the liquid crystal display panel 110 are sequentially fixed, and the upper system case 100 is fixed to the lower system case 180. By deleting the top case and the bottom cover of the general liquid crystal display device, This has the advantage of simplifying the structure.

또한, 본 발명은 일반적인 액정표시장치의 탑 케이스 및 바텀커버가 삭제된 구조로써, 슬림화에 유리한 장점을 가진다.In addition, the present invention has a structure in which the top case and the bottom cover of the general liquid crystal display device are deleted, which is advantageous in slimming.

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

도 1은 본 발명의 일 실시예에 따른 액정표시장치를 도시한 분해 사시도이다.1 is an exploded perspective view illustrating a liquid crystal display according to an exemplary embodiment of the present invention.

도 2는 도 1의 Ⅰ-Ⅰ'라인을 따라 절단한 액정표시장치의 단면도이다.FIG. 2 is a cross-sectional view of the liquid crystal display taken along the line II ′ of FIG. 1.

Claims (8)

액정표시패널;A liquid crystal display panel; 상기 액정표시패널에 광을 제공하는 백라이트 유닛;A backlight unit providing light to the liquid crystal display panel; 상기 액정표시패널의 하부면 가장자리를 지지하는 패널 가이드;A panel guide supporting an edge of a lower surface of the liquid crystal display panel; 상기 액정표시패널의 가장자리를 감싸는 상부 시스템 케이스; 및An upper system case surrounding an edge of the liquid crystal display panel; And 상기 백라이트 유닛이 수납되고, 상기 상부 시스템 케이스와 결합되는 하부 시스템 케이스를 포함하고,A lower system case accommodating the backlight unit and coupled to the upper system case; 상기 하부 시스템 케이스 상에는 복수의 발광 다이오드가 실장된 광원 유닛이 직접 고정되는 것을 특징으로 하는 액정표시장치.And a light source unit mounted with a plurality of light emitting diodes is directly fixed on the lower system case. 제1 항에 있어서,The method according to claim 1, 상기 광원 유닛은 상기 하부 시스템 케이스의 상부면에 일정한 간격을 두고 복수개 구비되는 것을 특징으로 하는 액정표시장치.And a plurality of light source units provided on the upper surface of the lower system case at regular intervals. 제1 항에 있어서,The method according to claim 1, 상기 하부 시스템 케이스는 양측에 돌출부를 가지는 것을 특징으로 하는 액정표시장치.And the lower system case has protrusions at both sides thereof. 제3 항에 있어서,The method of claim 3, 상기 돌출부의 외측면은 상기 패널 가이드의 내측면과 대면되는 것을 특징으로 하는 액정표시장치.And an outer side surface of the protrusion facing an inner side surface of the panel guide. 제3 항에 있어서,The method of claim 3, 상기 돌출부의 내측면에는 광원 유닛이 구비되고, 상기 광원 유닛과 나란하게 도광판이 구비된 것을 특징으로 하는 액정표시장치.A light source unit is provided on an inner side surface of the protrusion, and a light guide plate is provided in parallel with the light source unit. 제1 항에 있어서,The method according to claim 1, 상기 하부 시스템 케이스의 후면에는 제1 및 제2 구동 PCB가 구비된 것을 특징으로 하는 액정표시장치.And a first driving PCB and a second driving PCB on a rear surface of the lower system case. 제6 항에 있어서,The method according to claim 6, 상기 제1 구동 PCB에는 상기 액정표시패널을 구동시키는 패널 구동부와, 외부의 신호에 따라 상기 패널 구동부를 제어하는 시스템 구동부가 실장되는 것을 특징으로 하는 액정표시장치.And a panel driver for driving the liquid crystal display panel and a system driver for controlling the panel driver according to an external signal. 제6 항에 있어서,The method according to claim 6, 상기 제2 구동 PCB에는 상기 발광 다이오드를 구동시키는 LED 구동 드라이버가 실장되는 것을 특징으로 하는 액정표시장치.And a LED driving driver for driving the light emitting diode is mounted on the second driving PCB.
KR1020090127400A 2009-12-18 2009-12-18 LCD Display KR20110070542A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106353922A (en) * 2016-10-26 2017-01-25 南京华东电子信息科技股份有限公司 Straight down type LED backlight Light Bar fixing way

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106353922A (en) * 2016-10-26 2017-01-25 南京华东电子信息科技股份有限公司 Straight down type LED backlight Light Bar fixing way
CN106353922B (en) * 2016-10-26 2019-05-17 南京华东电子信息科技股份有限公司 Direct-light type LED backlight Light-Bar fixed form

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