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KR20000043523A - Backlight assembly of liquid crystal display device - Google Patents

Backlight assembly of liquid crystal display device Download PDF

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Publication number
KR20000043523A
KR20000043523A KR1019980059920A KR19980059920A KR20000043523A KR 20000043523 A KR20000043523 A KR 20000043523A KR 1019980059920 A KR1019980059920 A KR 1019980059920A KR 19980059920 A KR19980059920 A KR 19980059920A KR 20000043523 A KR20000043523 A KR 20000043523A
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KR
South Korea
Prior art keywords
light
panel
liquid crystal
crystal display
display device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
KR1019980059920A
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Korean (ko)
Inventor
양동철
Original Assignee
윤종용
삼성전자 주식회사
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Publication date
Application filed by 윤종용, 삼성전자 주식회사 filed Critical 윤종용
Priority to KR1019980059920A priority Critical patent/KR20000043523A/en
Publication of KR20000043523A publication Critical patent/KR20000043523A/en
Ceased legal-status Critical Current

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Classifications

    • 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
    • G02B6/0001—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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • 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

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

Abstract

PURPOSE: A backlight assembly of a liquid crystal display device is provided to attach the side of the liquid crystal display device to an inner wall of a panel guide. CONSTITUTION: A backlight assembly of a liquid crystal display device includes a mold frame(110), a reflection sheet(120), a light waveguide, an optical sheet(124), a panel guide(130), and a liquid crystal display panel(140). The mold frame(110) includes a container region(112). The reflection sheet(120) is implemented on the bottom of the container region and reflects light. The light waveguide is implemented on the upper side of the light waveguide and guides the light. The optical sheet(124) is implemented on the upper side of the light waveguide plate and expands and focus the light guided by the light waveguide. The panel guide(130) is implemented on the upper side of the optical sheets and includes a container hole formed on the upper portion with a predetermined depth. The liquid crystal display panel(140) is inserted in the container hole and display information using the light from the optical sheets.

Description

액정표시장치의 백라이트 어셈블리Backlight Assembly of Liquid Crystal Display

본 발명은 액정표시장치의 백라이트 어셈블리에 관한 것으로, 더욱 상세하게는 몰드프레임과 LCD 패널의 조립공차에 의해 LCD 패널이 수평방향으로 유동되는 것을 방지하기 위해서 탄성부재를 이용하여 패널 가이드를 형성하여 LCD 패널의 유동을 방지한 액정표시장치의 백라이트 어셈블리에 관한 것이다.The present invention relates to a backlight assembly of a liquid crystal display device, and more particularly, to form a panel guide using an elastic member in order to prevent the LCD panel from flowing in the horizontal direction due to the assembly tolerance between the mold frame and the LCD panel. The present invention relates to a backlight assembly of a liquid crystal display device which prevents the flow of a panel.

일반적으로, 정보화 사회에서 LCD 모듈의 개발은 눈부시게 발전하고 있으며 그 역할도 중요화되고 있다. LCD 모듈은 자체 발광을 하지 못하는 수광소자이기 때문에 일반적으로 투과형 LCD 모듈에서는 빛을 전달하는 백라이트 어셈블리(backlight assembly)가 반드시 필요하게 된다.In general, the development of the LCD module in the information society has developed remarkably and its role is becoming important. Since LCD modules are light-receiving elements that do not emit light of their own, generally, a backlight assembly for transmitting light is required in a transmissive LCD module.

이러한, 백라이트 어셈블리는 크게 LCD 모듈의 광원으로 사용되는 램프 어셈블리(lamp assembly)와, 램프 어셈블리에서 발생된 빛을 LCD 패널로 안내하는 도광판과, 도광판에서 안내된 빛을 확산하고 집광하는 시트류와, 램프 어셈블리, 도광판, 시트류등을 수납하여 고정하는 몰드프레임(mold frame)으로 구성된다.The backlight assembly includes a lamp assembly used as a light source of the LCD module, a light guide plate for guiding the light generated from the lamp assembly to the LCD panel, sheets for diffusing and condensing the light guided from the light guide plate, It consists of a mold frame for storing and fixing a lamp assembly, a light guide plate, sheets, and the like.

여기서, 백라이트 어셈블리의 각 부재들과 LCD 패널은 상호 일정한 조립 공차를 가지고 설계되고 있어 각 부재들과 LCD 패널을 몰드프레임에 고정하였을 경우 몰드프레임과 각 부재들 및 LCD 패널 사이에 소정의 갭(gap)이 발생된다. 이 갭은 도광판과 시트류 및 LCD 패널이 몰드프레임에 끼워질 수 있는 조립성 및 각 부재들의 열팽창 계수에 따라 결정된다.Here, each member of the backlight assembly and the LCD panel are designed to have a mutually consistent assembly tolerance, so that when the members and the LCD panel are fixed to the mold frame, a predetermined gap is formed between the mold frame, the members and the LCD panel. ) Is generated. This gap is determined by the assemblability in which the light guide plate, sheets, and LCD panel can be fitted to the mold frame, and the coefficient of thermal expansion of each member.

그러나, 이러한 조립공차로 인해 충격이나 진동에 의해 각 부재들과 LCD 패널이 몰드프레임 내에서 유동되는데, 몰드프레임에 수납된 부재들 중 유리재질로 형성되어 충격에 취약한 LCD 패널의 경우 몰드프레임의 측벽에 부딪혀 파손되므로 제품의 신뢰성이 저하된다.However, due to the assembly tolerance, each member and the LCD panel are flowed in the mold frame by shock or vibration. In the case of the LCD panel which is vulnerable to impact due to the glass material among the members housed in the mold frame, the sidewall of the mold frame is weak. The product's reliability is reduced because it hits and breaks.

따라서, 본 발명의 목적은 상기와 같은 문제점을 감안하여 안출된 것으로써, 몰드프레임에 안착되는 LCD 패널이 충격이나 진동에 의해 유동되는 것을 방지하는데 있다.Accordingly, an object of the present invention is to conceive in view of the above problems, to prevent the LCD panel seated on the mold frame from being moved by shock or vibration.

본 발명의 다른 목적은 다음의 상세한 설명과 첨부된 도면으로부터 보다 명확해 질 것이다.Other objects of the present invention will become more apparent from the following detailed description and the accompanying drawings.

도 1은 본 발명에 의한 액정표시장치를 개략적으로 나타낸 분해 사시도이고,1 is an exploded perspective view schematically showing a liquid crystal display device according to the present invention;

도 2는 도 1을 I-I선으로 절단한 종단면도이다.FIG. 2 is a longitudinal cross-sectional view of FIG. 1 taken along line I-I. FIG.

이와 같은 목적을 달성하기 위해서 본 발명은 LCD 패널이 안착되는 패널 가이드를 LCD 모듈과 별도로 제작하고, 패널 가이드를 탄성부재로 형성하여 LCD 패널을 용이하게 삽입함과 아울러 패널 가이드의 측벽과 LCD 패널의 측면을 밀착시켜 LCD 패널이 유동하는 것을 방지한다.In order to achieve the above object, the present invention provides a panel guide on which the LCD panel is seated separately from the LCD module, and forms the panel guide with an elastic member to easily insert the LCD panel, as well as the sidewalls of the panel guide and the LCD panel. The sides are pressed against each other to prevent the LCD panel from flowing.

일예로, 패널 가이드는 실리콘 고무로 형성된다.In one example, the panel guide is formed of silicone rubber.

이하, 본 발명에 의한 액정표시장치의 백라이트 어셈블리 구조를 첨부된 도면 도 1 및 도 2를 참조하여 설명하면 다음과 같다.Hereinafter, the backlight assembly structure of the liquid crystal display according to the present invention will be described with reference to FIGS. 1 and 2.

본 발명에 의한 액정표시장치(100)는 도 도 2에 도시된 바와 같이 상부면에 수납공간(112)이 형성된 사각형상의 몰드프레임(110)과, 몰드프레임(110)의 기저면에서부터 차례대로 적층되어 빛을 반사하고 안내하며 집광하는 반사시트(120), 도광판(122) 및 광학 시트들(124)과, 광학 시트들(124)의 상부에 설치되며 수납공간(112)에 억지끼워 맞춤되는 패널 가이드(130)와, 패널 가이드(130)에 억지끼워 맞춤되며 정보를 표시하는 LCD 패널(140)과, LCD 패널(140) 중 화면이 표시되지 않는 화면비표시영역과 몰드프레임(110)의 측면을 감싸면서 몰드프레임(110)과 결합되는 탑샤시(도시 안됨)로 구성된다.As shown in FIG. 2, the liquid crystal display device 100 according to the present invention is stacked in order from a base mold of a rectangular mold frame 110 having a receiving space 112 formed on an upper surface thereof, and a base surface of the mold frame 110. Reflective sheet 120, light guide plate 122 and optical sheets 124 reflecting, guiding and condensing light, and a panel guide installed on the upper portion of the optical sheets 124 and fit in the storage space 112 130 and the LCD panel 140 which is fitted to the panel guide 130 and fits, and surrounds the non-display area where the screen is not displayed and the sides of the mold frame 110 among the LCD panels 140. While being composed of a top chassis (not shown) coupled with the mold frame 110.

여기서, 본 발명에 의한 패널 가이드(130)는 도 1에 도시된 바와 같이 몰드프레임(110)과 대응되는 사각형상으로, 패널 가이드(130)의 상부면에는 LCD 패널(140)을 삽입 고정시키기 위한 수납홈(132)이 소정깊이로 형성된다.Here, the panel guide 130 according to the present invention has a quadrangular shape corresponding to the mold frame 110 as shown in FIG. 1, for inserting and fixing the LCD panel 140 to the upper surface of the panel guide 130. The receiving groove 132 is formed to a predetermined depth.

여기서, 수납홈(132)의 기저면 중 LCD 패널(140)의 화면비표시영역과 대응되는 부분을 제외한 나머지 부분은 광학 시트들에서 전달된 빛이 LCD 패널(140)의 배면으로 입사되도록 관통된다.Here, the remaining portion of the base surface of the receiving groove 132 except for the portion corresponding to the non-display area of the LCD panel 140 penetrates the light transmitted from the optical sheets to enter the rear surface of the LCD panel 140.

또한, 수납홈(132)에 끼워진 LCD 패널(140)이 충격 또는 진동에 의해서 패널 가이드(130)의 수평방향으로 유동되는 것을 방지하기 위해 수납홈(132)의 크기를 LCD 패널(140)의 크기와 동일하게 형성하고, LCD 패널(140)을 수납홈(132)에 용이하게 끼우기 위해서 패널 가이드(130)를 탄성부재로 형성한다.In addition, in order to prevent the LCD panel 140 inserted into the receiving groove 132 from flowing in the horizontal direction of the panel guide 130 by impact or vibration, the size of the receiving groove 132 is determined by the size of the LCD panel 140. The panel guide 130 is formed of an elastic member so as to be formed in the same manner as described above, and to easily fit the LCD panel 140 into the receiving groove 132.

바람직하게, 탄성 부재는 실리콘 고무이다.Preferably, the elastic member is silicone rubber.

이와 같이 패널 가이드(130)를 몰드프레임(110)과 별도로 제작하고, 패널 가이드(130)에 형성된 수납홈(132)의 크기를 LCD 패널(140)의 크기와 동일하게 형성하며, 또한 패널 가이드(130)를 신축성이 있는 탄성부재로 형성하기 때문에 LCD 패널(140)을 수납홈(132)에 끼우기도 용이할 뿐만 아니라 LCD 패널(140)이 수납홈(142)에 끼워지면 패널 가이드(130)의 측벽이 LCD 패널(140)의 측벽이 서로 밀착되기 때문에 LCD 패널(140)이 유동되지 않는다.In this way, the panel guide 130 is manufactured separately from the mold frame 110, and the size of the accommodating groove 132 formed in the panel guide 130 is the same as that of the LCD panel 140, and the panel guide ( Since the 130 is formed of a flexible elastic member, the LCD panel 140 may not only be easily inserted into the receiving groove 132, but also when the LCD panel 140 is fitted into the receiving groove 142. Since the side walls of the LCD panel 140 are in close contact with each other, the LCD panel 140 does not flow.

이상에서 설명한 바와 같이 본 발명은 탄성력 부재를 이용하여 패널 가이드를 제작한 후 몰드프레임에 결시키고, 패널 가이드의 상부에 LCD 패널을 억지끼워맞춤한다.As described above, the present invention manufactures a panel guide using an elastic force member, binds it to a mold frame, and fits the LCD panel on top of the panel guide.

따라서, LCD 패널의 측면이 패널 가이드의 내측벽과 완전히 밀착되므로 충격이나 진동에 의해 LCD 패널이 유동하는 것을 방지할 수 있어 제품의 신뢰성을 향상시킬 수 있는 효과가 있다.Therefore, since the side surface of the LCD panel is in close contact with the inner wall of the panel guide, it is possible to prevent the LCD panel from flowing due to shock or vibration, thereby improving the reliability of the product.

Claims (2)

수납공간이 형성된 몰드프레임과;A mold frame in which a storage space is formed; 상기 수납공간의 기저면에 설치되어 빛을 반사하는 반사시트와;A reflection sheet installed on a bottom surface of the storage space to reflect light; 상기 반사시트의 상부에 설치되어 빛을 안내하는 도광판과;A light guide plate installed on the reflection sheet to guide light; 상기 도광판의 상부에 설치되어 안내된 빛을 확산하고 집광하는 광학 시트들과;Optical sheets installed on an upper portion of the light guide plate to diffuse and collect guided light; 상기 광학 시트들의 상부에 설치되고, 상부면에 수납홈이 소정깊이로 형성되며 탄성력을 갖는 패널 가이드와;A panel guide installed on top of the optical sheets, and having an accommodation groove formed on the upper surface of the optical sheet at a predetermined depth and having an elastic force; 상기 수납홈에 억지끼워 맞춤되어 상기 광학 시트류에서 전달된 빛을 이용하여 정보를 표시하는 LCD 패널을 포함하는 것을 특징으로하는 액정표시장치의 백라이트 어셈블리.And an LCD panel that is fitted to the receiving groove and displays information by using light transmitted from the optical sheets. 제 1 항에 있어서, 상기 가이드 패널은 실리콘 고무로 형성된 것을 특징으로 하는 액정표시장치의 백라이트 어셈블리.The backlight assembly of claim 1, wherein the guide panel is formed of silicone rubber.
KR1019980059920A 1998-12-29 1998-12-29 Backlight assembly of liquid crystal display device Ceased KR20000043523A (en)

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KR1019980059920A KR20000043523A (en) 1998-12-29 1998-12-29 Backlight assembly of liquid crystal display device

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KR1019980059920A KR20000043523A (en) 1998-12-29 1998-12-29 Backlight assembly of liquid crystal display device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100512814B1 (en) * 2001-04-27 2005-09-07 캐논 가부시끼가이샤 Binder resin containing polyhydroxyalkanoate, toner containing the binder resin, and image-forming method and image-forming apparatus which make use of the toner

Citations (4)

* Cited by examiner, † Cited by third party
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JPH0561040A (en) * 1991-09-02 1993-03-12 Fujitsu Ltd Liquid crystal display device
KR970071485A (en) * 1996-04-23 1997-11-07 가네꼬 히사시 LCD panel holding structure of electronic device
JPH09318952A (en) * 1996-05-30 1997-12-12 Hitachi Ltd Liquid crystal display
JPH1039280A (en) * 1996-07-25 1998-02-13 Nec Corp Liquid crystal display device

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JPH0561040A (en) * 1991-09-02 1993-03-12 Fujitsu Ltd Liquid crystal display device
KR970071485A (en) * 1996-04-23 1997-11-07 가네꼬 히사시 LCD panel holding structure of electronic device
JPH09318952A (en) * 1996-05-30 1997-12-12 Hitachi Ltd Liquid crystal display
JPH1039280A (en) * 1996-07-25 1998-02-13 Nec Corp Liquid crystal display device

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* Cited by examiner, † Cited by third party
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KR100512814B1 (en) * 2001-04-27 2005-09-07 캐논 가부시끼가이샤 Binder resin containing polyhydroxyalkanoate, toner containing the binder resin, and image-forming method and image-forming apparatus which make use of the toner

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