KR100845562B1 - Liquid crystal display - Google Patents

Liquid crystal display Download PDF

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KR100845562B1
KR100845562B1 KR1020020027601A KR20020027601A KR100845562B1 KR 100845562 B1 KR100845562 B1 KR 100845562B1 KR 1020020027601 A KR1020020027601 A KR 1020020027601A KR 20020027601 A KR20020027601 A KR 20020027601A KR 100845562 B1 KR100845562 B1 KR 100845562B1
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liquid crystal
crystal display
lamp
diffusion
support member
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KR1020020027601A
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KR20030089752A (en
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최용석
박종대
방창영
이근우
이재상
이태진
이정환
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삼성전자주식회사
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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
    • 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
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • 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
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity

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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)
  • Liquid Crystal (AREA)

Abstract

광의 균일도를 향상할 수 있는 직하형 액정 표시 장치가 개시된다. 직하형 액정 표시 장치는, 광을 발생하기 위한 램프, 상기 램프를 바닥면에 수납하기 위한 수납 부재, 상기 램프의 상부에 위치하고, 상기 램프로부터의 광을 확산하기 위한 확산 부재, 상기 수납 부재와 결합하고, 상기 확산부재를 지지하여 상기 수납 부재와 상기 확산 부재와의 사이를 소정의 거리로 이격하기 위한 제1 지지부재 및 상기 확산부재와 상기 지지부재와의 사이에 설치되고, 상기 확산부재를 지지하여 상기 확산부재의 변형을 방지하기 위한 제2 지지부재를 갖는다. 따라서, 액정 표시 패널의 신뢰성을 향상시킬 수 있고, 액정 표시 패널로 제공되는 광의 균일도를 일정하게 유지할 수 있다.Disclosed is a direct type liquid crystal display device capable of improving the uniformity of light. A direct type liquid crystal display device includes a lamp for generating light, an accommodating member for accommodating the lamp on a bottom surface, a diffusion member positioned above the lamp, for diffusing light from the lamp, and coupled with the accommodating member. And a first support member for supporting the diffusion member and spaced apart between the accommodation member and the diffusion member by a predetermined distance, and between the diffusion member and the support member, and support the diffusion member. And a second support member for preventing deformation of the diffusion member. Therefore, the reliability of a liquid crystal display panel can be improved and the uniformity of the light provided to a liquid crystal display panel can be kept constant.

Description

액정 표시 장치{LIQUID CRYSTAL DISPLAY}Liquid crystal display {LIQUID CRYSTAL DISPLAY}

도 1 및 도 2는 일반적인 직하형 액정 표시 장치의 구조를 개략적으로 나타낸 단면도 및 평면도이다.1 and 2 are a cross-sectional view and a plan view schematically illustrating a structure of a general direct type liquid crystal display.

도 3은 도 1에 도시된 확산판을 변형을 보여주는 단면도이다.3 is a cross-sectional view illustrating a deformation of the diffusion plate illustrated in FIG. 1.

도 4는 본 발명의 일 실시예에 따른 직하형 액정 표시 장치를 나타낸 부분 단면도이다.4 is a partial cross-sectional view of a direct type liquid crystal display device according to an exemplary embodiment of the present invention.

도 5는 도 4에 도시된 확산판 및 지지부재의 구조를 구체적으로 나타낸 단면도이다.5 is a cross-sectional view showing in detail the structure of the diffusion plate and the support member shown in FIG.

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

210 : 램프 220 : 램프 커버210: lamp 220: lamp cover

230 : 확산판 240 : 확산시트230: diffusion plate 240: diffusion sheet

260 : 제2 지지부재 270 : 제1 지지부재260: second support member 270: first support member

310 : 액정표시패널 340 : 탑샤시310: liquid crystal display panel 340: top chassis

본 발명은 액정 표시 장치에 관한 것으로, 좀 더 구체적으로는, 광의 균일도 를 향상할 수 있는 직하형 액정 표시 장치에 관한 것이다.The present invention relates to a liquid crystal display device, and more particularly, to a direct type liquid crystal display device capable of improving the uniformity of light.

도 1 및 도 2는 일반적인 직하형 액정 표시 장치의 구조를 개략적으로 나타낸 단면도 및 평면도이다. 도 3은 도 1에 도시된 확산판을 변형을 보여주는 단면도이다.1 and 2 are a cross-sectional view and a plan view schematically illustrating a structure of a general direct type liquid crystal display. 3 is a cross-sectional view illustrating a deformation of the diffusion plate illustrated in FIG. 1.

도 1 및 도 2를 참조하면, 일반적인 직하형 액정 표시 장치(10)는 광을 발생하기 위한 복수의 램프(12), 상기 광을 확산하기 위한 확산판(14), 상기 확산판(14)으로부터 출사되는 광의 휘도 특성을 조절하기 위한 광학시트(16), 상기 광학시트(16)로부터 출사되는 광 및 제어부(미도시)로부터 제공되는 제어신호들에 응답하여 영상을 표시하기 위한 액정 표시 패널(18)을 구비한다.1 and 2, a general direct type liquid crystal display device 10 includes a plurality of lamps 12 for generating light, a diffusion plate 14 for diffusing the light, and the diffusion plate 14. An optical sheet 16 for adjusting luminance characteristics of the emitted light, a liquid crystal display panel 18 for displaying an image in response to light emitted from the optical sheet 16 and control signals provided from a controller (not shown) ).

상기 램프(12)는 상기 확산판(14)의 아래에 위치하는 램프 리플렉터(20)의 바닥면에 설치된다. 상기 램프 리플렉터(20)는 상기 확산판(14)과의 사이에 소정의 이격 거리를 갖도록 설치되고, 상기 이격 거리는 상기 확산판(14)과 상기 램프 리플렉터(20)와의 사이에 설치된 복수의 지지부재(22)에 의해 유지된다. The lamp 12 is installed on the bottom surface of the lamp reflector 20 positioned below the diffusion plate 14. The lamp reflector 20 is installed to have a predetermined distance between the diffusion plate 14 and the separation distance is a plurality of support members provided between the diffusion plate 14 and the lamp reflector 20. Maintained by 22.

일반적으로, 상기 직하형 액정 표시 장치(10)의 크기가 점차 증가되는 것과 달리 상기 확산판(14)의 두께는 일정하게 유지된다. 왜냐하면, 상기 직하형 액정 표시 장치(10)의 크기에 비례하여 상기 확산판(14)의 두께가 증가되면, 경박단소라는 액정 표시 장치(10)의 장점을 유지할 수 없기 때문이다.In general, the thickness of the diffusion plate 14 is kept constant, whereas the size of the direct type liquid crystal display device 10 is gradually increased. This is because when the thickness of the diffusion plate 14 is increased in proportion to the size of the direct type liquid crystal display device 10, the advantages of the liquid crystal display device 10 may be maintained.

이로 인해, 도 3에 도시된 바와 같이, 대형 화면을 갖는 직하형 액정 표시 장치(10)의 확산판(14)이 상기 램프 리플렉터(20)측으로 쳐지거나 비틀리는 변형이 발생된다. 따라서, 상기 램프(12)로부터의 광의 휘도를 균일하게 유지할 수 없고, 직하형 액정 표시 장치(10)의 신뢰성이 저하된다.As a result, as shown in FIG. 3, a deformation occurs in which the diffusion plate 14 of the direct type liquid crystal display device 10 having the large screen is struck or twisted toward the lamp reflector 20 side. Therefore, the brightness of the light from the lamp 12 cannot be maintained uniformly, and the reliability of the direct type liquid crystal display device 10 is lowered.

이에 본 발명의 기술과 과제는 이러한 종래의 문제점을 해결하기 위한 것으로, 본 발명의 목적은 확산판의 변형을 방지할 수 있는 직하형 액정 표시 장치를 제공하는 것이다.Accordingly, the present invention has been made in an effort to solve such a conventional problem, and an object of the present invention is to provide a direct type liquid crystal display device capable of preventing deformation of a diffusion plate.

상술한 목적을 달성하기 위한 본 발명에 따른 직하형 액정 표시 장치는, 광을 발생하기 위한 램프; 상기 램프를 바닥면에 수납하기 위한 수납 부재; 상기 램프의 상부에 위치하고, 상기 램프로부터의 광을 확산하기 위한 확산 부재; 상기 수납 부재와 결합하고, 상기 확산부재를 지지하여 상기 수납 부재와 상기 확산 부재와의 사이를 소정의 거리로 이격하기 위한 제1 지지부재; 및 상기 확산부재와 상기 지지부재와의 사이에 설치되고, 상기 확산부재를 지지하여 상기 확산부재의 변형을 방지하기 위한 제2 지지부재를 포함한다.A direct type liquid crystal display device according to the present invention for achieving the above object is a lamp for generating light; An accommodating member for accommodating the lamp on a floor; A diffusion member positioned above the lamp and configured to diffuse light from the lamp; A first support member coupled to the accommodation member and supporting the diffusion member so as to be spaced apart from the accommodation member and the diffusion member by a predetermined distance; And a second support member installed between the diffusion member and the support member to support the diffusion member to prevent deformation of the diffusion member.

이러한 직하형 액정 표시 장치에 따르면, 확산부재의 처짐 및 비틀림과 같은 변형은 제2 지지부재에 의해 억제되고, 램프 커버와 상기 확산판과의 사이의 갭은 제2 지지부재를 지지하는 제1 지지부재에 의해 유지된다. 따라서, 액정 표시 패널의 신뢰성을 향상시킬 수 있고, 액정 표시 패널로 제공되는 광의 균일도를 일정하게 유지할 수 있다.According to such a direct type liquid crystal display device, deformation such as deflection and torsion of the diffusion member is suppressed by the second support member, and a gap between the lamp cover and the diffusion plate is supported by the first support member supporting the second support member. Maintained by the member. Therefore, the reliability of a liquid crystal display panel can be improved and the uniformity of the light provided to a liquid crystal display panel can be kept constant.

그러면, 첨부한 도면들을 참조하여, 본 발명을 보다 상세하게 설명하고자 한다. Then, the present invention will be described in more detail with reference to the accompanying drawings.                     

도 4는 본 발명의 바람직한 실시예에 따른 직하형 액정 표시 장치를 나타낸 부분 단면도이다. 4 is a partial cross-sectional view of a direct type liquid crystal display device according to a preferred embodiment of the present invention.

도 4를 참조하면, 본 발명에 따른 직하형 액정 표시 장치(100)는 크게 광을 공급하기 위한 광공급 어셈블리(200)와 광에 대응하여 영상을 표시하기 위한 액정표시패널 어셈블리(300)로 구성된다.Referring to FIG. 4, the direct type liquid crystal display device 100 according to the present invention includes a light supply assembly 200 for largely supplying light and a liquid crystal display panel assembly 300 for displaying an image corresponding to the light. do.

액정표시패널 어셈블리(300)는 영상을 표시하는 액정표시패널(310), 테이프 캐리어 패키지(TCP; Tape Carrier Package)(320) 및 인쇄회로기판(330)으로 구성된다.The liquid crystal display panel assembly 300 includes a liquid crystal display panel 310 for displaying an image, a tape carrier package (TCP) 320, and a printed circuit board 330.

액정표시패널(310)은 매트릭스상의 박막 트랜지스터가 형성되어 있는 투명한 유리 기판의 박막 트랜지스터 기판(310a), 광이 통과하면서 소정의 색이 발현되는 색화소인 RGB 화소가 박막공정에 의해 형성된 컬러 필터 기판(310b) 및 액정(미도시)을 포함한다. The liquid crystal display panel 310 includes a thin film transistor substrate 310a of a transparent glass substrate on which a matrix thin film transistor is formed, and a color filter substrate on which a RGB pixel, which is a color pixel in which a predetermined color is expressed while light passes, is formed by a thin film process. 310b and a liquid crystal (not shown).

상기 박막 트랜지스터들의 소오스 및 게이트 단자에는 각각 데이터 라인 및 게이트라인이 연결되고, 드레인 단자에는 투명한 도전성 재질인 인듐 틴 옥사이드(이하, ITO)로 이루어진 화소전극이 형성된다. 또한, 상기 박막 트랜지스터 기판(310a)에 대향하여 구비된 상기 컬러 필터 기판(310b)의 전면에는 ITO로 이루어진 공통전극이 도포되어 있다.Data lines and gate lines are respectively connected to the source and gate terminals of the thin film transistors, and a pixel electrode made of indium tin oxide (hereinafter referred to as ITO), which is a transparent conductive material, is formed at the drain terminal. In addition, a common electrode made of ITO is coated on the entire surface of the color filter substrate 310b provided to face the thin film transistor substrate 310a.

상술한 박막 트랜지스터 기판(310a)의 트랜지스터의 게이트 단자 및 소오스 단자에 전원이 인가되어 박막 트랜지스터가 턴-온되면, 화소 전극과 컬러 필터 기판(310b)의 공통 전극사이에는 전계가 형성된다. When power is applied to the gate terminal and the source terminal of the transistor of the thin film transistor substrate 310a and the thin film transistor is turned on, an electric field is formed between the pixel electrode and the common electrode of the color filter substrate 310b.                     

이러한 전계에 의해 박막 트랜지스터 기판(310a)과 컬러 필터 기판(310b)과의 사이에 주입된 액정의 배열각이 변화되고 변화된 배열각에 따라서 광투과도가 변경되어 원하는 화소를 얻게 된다.Such an electric field changes the arrangement angle of the liquid crystal injected between the thin film transistor substrate 310a and the color filter substrate 310b and the light transmittance is changed according to the changed arrangement angle to obtain a desired pixel.

한편, 상기 액정표시패널 어셈블리(300)의 아래에 구비된 광공급 어셈블리(200)는 램프(210), 상기 램프(210)를 바닥면에 소정 거리로 이격하여 수납하는 램프 커버(220), 상기 램프(210)로부터의 광을 확산하기 위한 확산판(230) 및 상기 광의 휘도 특성을 확보하여 상기 액정표시패널 어셈블리(300)로 제공하기 위한 광학시트들(240)을 구비한다.The light supply assembly 200 provided below the liquid crystal display panel assembly 300 may include a lamp 210 and a lamp cover 220 spaced apart from the lamp 210 at a predetermined distance from the bottom surface of the lamp 210. And a diffusion plate 230 for diffusing light from the lamp 210 and optical sheets 240 for securing the luminance characteristic of the light to the liquid crystal display panel assembly 300.

상기 램프 커버(220)의 상부에 안착되는 광학시트들(240)의 위치는 상기 램프 커버(220)와 대향하여 결합하는 미들 샤시(250)에 의해 가이드된다. 상기 액정표시패널 어셈블리(300)는 상기 미들 샤시(250)와 결합하는 탑샤시(340)에 의해 상기 미들 샤시(250)에 고정된다. 상기 램프 커버(220)는 상기 램프(210)로부터의 광을 상기 액정 표시 패널(310)측으로 반사하는 램프 리플렉터로서의 역할을 동시에 수행한다.The positions of the optical sheets 240 seated on the upper part of the lamp cover 220 are guided by the middle chassis 250 which is coupled to the lamp cover 220 to face each other. The liquid crystal display panel assembly 300 is fixed to the middle chassis 250 by a top chassis 340 that is coupled to the middle chassis 250. The lamp cover 220 simultaneously serves as a lamp reflector that reflects light from the lamp 210 toward the liquid crystal display panel 310.

도 5는 상기한 도 4에 도시된 확산판 및 지지부재의 구조를 구체적으로 나타낸 단면도이다.5 is a cross-sectional view showing in detail the structure of the diffusion plate and the support member shown in FIG.

도 5를 참조하면, 상기 램프 커버(220)와 상기 확산판(230)과의 사이에는 상기 액정표시패널 어셈블리(300)로 제공되는 광의 균일한 휘도 분포를 확보하기 위해 소정의 갭이 유지된다. Referring to FIG. 5, a predetermined gap is maintained between the lamp cover 220 and the diffuser plate 230 to secure a uniform luminance distribution of light provided to the liquid crystal display panel assembly 300.

상기 램프 커버(220)와 상기 확산판(230)과의 사이의 갭을 유지하기 위하여 상기 램프 커버(220)와 상기 확산판(230)과의 사이에는 제1 지지 부재(270)가 설치된다. A first support member 270 is installed between the lamp cover 220 and the diffusion plate 230 to maintain a gap between the lamp cover 220 and the diffusion plate 230.

상기 제1 지지부재(270)는 상기 확산판(230)측으로 진행할수록 지름이 작아지는 원뿔 형상을 갖고, 상기 제1 지지부재(270)의 바닥면은 상기 램프 커버(220)의 바닥면에 고정하여 설치된다.The first support member 270 has a conical shape that decreases in diameter as it proceeds toward the diffusion plate 230, and the bottom surface of the first support member 270 is fixed to the bottom surface of the lamp cover 220. Is installed.

또한, 상기 확산판(230)과 상기 제1 지지부재(270)와의 사이에는 상기 확산판(230)을 전면적으로 커버하는 플레이트 형상을 갖는 제2 지지부재(260)가 설치된다. In addition, a second support member 260 having a plate shape covering the entire diffusion plate 230 is provided between the diffusion plate 230 and the first support member 270.

상기 제2 지지부재(260)는 상기 확산판(230) 보다 딱딱한 재질로 형성되고, 상기 확산판(230) 보다 두꺼운 두께를 갖는다. 또한, 상기 제2 지지부재(260)는 상기 램프(210)로부터 출사되는 광을 상기 확산판(230)측으로 투과할 수 있도록 투명한 재질로 형성된다.The second support member 260 is formed of a harder material than the diffusion plate 230 and has a thickness thicker than that of the diffusion plate 230. In addition, the second support member 260 is formed of a transparent material to transmit the light emitted from the lamp 210 to the diffusion plate 230 side.

상술한 바와 같은 직하형 액정 표시 장치에 따르면, 상기 확산판과 상기 제1 지지부재와의 사이에는 상기 확산판을 전면적으로 커버할 수 있는 제2 지지부재가 설치된다. According to the direct type liquid crystal display device as described above, a second support member may be disposed between the diffusion plate and the first support member to cover the diffusion plate entirely.

상기 확산판의 처짐 및 비트림과 같은 변형은 상기 제2 지지부재에 의해 억제되고, 상기 램프 커버와 상기 확산판과의 사이의 갭은 상기 제2 지지부재를 지지하는 상기 제1 지지부재에 의해 유지된다.Deformation, such as sag and bit rim of the diffuser plate, is suppressed by the second support member, and a gap between the lamp cover and the diffuser plate is caused by the first support member supporting the second support member. maintain.

따라서, 액정 표시 패널의 신뢰성을 향상시킬 수 있고, 상기 액정 표시 패널 로 제공되는 광의 균일도를 일정하게 유지할 수 있다.Therefore, the reliability of the liquid crystal display panel can be improved, and the uniformity of the light provided to the liquid crystal display panel can be kept constant.

상기에서는 본 발명의 바람직한 실시예를 참조하여 설명하였지만, 해당 기술 분야의 숙련된 당업자는 하기의 특허 청구의 범위에 기재된 본 발명의 사상 및 영역으로부터 벗어나지 않는 범위내에서 본 발명을 다양하게 수정 및 변경시킬 수 있음을 이해할 수 있을 것이다.Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed within the scope of the present invention without departing from the spirit and scope of the invention described in the claims below. I can understand that you can.

Claims (6)

광을 발생하기 위한 램프;A lamp for generating light; 상기 램프가 높여지는 바닥면 및 상기 바닥면과 연결되어 수납 공간을 형성하는 측벽을 포함하고, 상기 측벽의 단부에는 상기 수납 공간의 외측으로 연장된 지지부가 형성된 수납 부재;A storage member including a bottom surface on which the lamp is raised and a sidewall connected to the bottom surface to form an accommodation space, and an end portion of the sidewall having a support extending outwardly of the storage space; 상기 램프의 상부에 위치하고, 상기 램프로부터의 광을 확산시키는 확산 부재;A diffusion member positioned above the lamp and configured to diffuse light from the lamp; 상기 수납 부재와 결합하고, 상기 확산부재를 지지하여 상기 수납 부재와 상기 확산 부재와의 사이를 이격시키는 제1 지지부재; 및A first support member coupled to the accommodation member and supporting the diffusion member to space between the accommodation member and the diffusion member; And 상기 확산부재와 상기 제1 지지부재 사이에서 상기 측벽의 지지부에 의해 지지되며, 상기 확산 부재와 접촉하여 상기 확산부재의 변형을 방지하기 위한 제2 지지부재를 포함하는 것을 특징으로 하는 액정 표시 장치.And a second support member supported by the support of the sidewall between the diffusion member and the first support member and in contact with the diffusion member to prevent deformation of the diffusion member. 제1항에 있어서, 상기 수납 부재는 상기 램프로부터의 광을 상기 확산 부재측으로 반사하기 위한 램프 리플렉터인 것을 특징으로 하는 액정 표시 장치.The liquid crystal display device according to claim 1, wherein the housing member is a lamp reflector for reflecting light from the lamp toward the diffusion member side. 제2항에 있어서, 상기 제1 지지 부재는 상기 확산 부재측으로 진행할수록 지름이 작아지는 원뿔 형상을 갖는 것을 특징으로 하는 액정 표시 장치.The liquid crystal display device according to claim 2, wherein the first support member has a conical shape whose diameter decreases as it proceeds toward the diffusion member side. 제2항에 있어서, 상기 제2 지지부재는 상기 확산부재를 전면적으로 커버하는 플레이트 형상을 갖는 것을 특징으로 하는 액정 표시 장치.The liquid crystal display device of claim 2, wherein the second support member has a plate shape covering the diffusion member entirely. 제4항에 있어서, 상기 제2 지지부재의 경도는The method of claim 4, wherein the hardness of the second support member 상기 확산부재의 경도보다 큰 것을 특징으로 하는 액정 표시 장치.And greater than the hardness of the diffusion member. 제4항에 있어서, 상기 제2 지지부재는 상기 램프로부터의 광을 투과시킬 수 있는 투명한 재질로 형성되는 것을 특징으로 하는 액정 표시 장치.The liquid crystal display of claim 4, wherein the second support member is formed of a transparent material that can transmit light from the lamp.
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