KR100490329B1 - Backlight assembly - Google Patents

Backlight assembly Download PDF

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Publication number
KR100490329B1
KR100490329B1 KR10-1998-0030527A KR19980030527A KR100490329B1 KR 100490329 B1 KR100490329 B1 KR 100490329B1 KR 19980030527 A KR19980030527 A KR 19980030527A KR 100490329 B1 KR100490329 B1 KR 100490329B1
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KR
South Korea
Prior art keywords
lamp
mold frame
assembly
lamp cover
male screw
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KR10-1998-0030527A
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Korean (ko)
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KR20000009874A (en
Inventor
장영훈
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삼성전자주식회사
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Priority to KR10-1998-0030527A priority Critical patent/KR100490329B1/en
Publication of KR20000009874A publication Critical patent/KR20000009874A/en
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Publication of KR100490329B1 publication Critical patent/KR100490329B1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/46—Fixing elements
    • G02F2201/465—Snap -fit

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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)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)
  • Planar Illumination Modules (AREA)

Abstract

몰드프레임의 일단부 소정영역을 제거하고, 제거된 부분에 몰드프레임을 대신하여 램프 어셈블리를 끼워 고정시킴으로써, 액정표시장치의 경량화, 박형화시킬 수 있다.By removing the predetermined region of one end of the mold frame and fixing the lamp assembly in place of the mold frame, the liquid crystal display device can be made lighter and thinner.

Description

백라이트 어셈블리Backlight assembly

본 발명은 백라이트 어셈블리에 관한 것으로, 더욱 상세하게는 금속재질로 램프 커버를 형성하고 램프 어셈블리가 설치되는 부분에는 몰드프레임을 제거하여 액정표시장치를 경량화시키고 박형화한 백라이트 어셈블리에 관한 것이다.The present invention relates to a backlight assembly, and more particularly, to a backlight assembly in which a liquid crystal display device is reduced in weight and thickness by forming a lamp cover made of a metal material and removing a mold frame at a portion where the lamp assembly is installed.

일반적으로 사용되고 있는 표시장치들 중의 하나인 CRT(cathode ray tube)는 TV를 비롯해서 계측기기, 정보 단말기기 등의 모니터에 주로 이용되고 있으나, CRT 자체의 무게와 크기로 인하여 전자 제품의 소형화, 경량화의 요구에 적극 대응할 수 없다.Cathode ray tube (CRT), which is one of the display devices that are generally used, is mainly used for monitors such as TVs, measuring devices, information terminal devices, etc., but due to the weight and size of the CRT itself, Can't actively respond to demand

이러한, CRT를 대체하기 위해 소형, 경량화의 장점을 가지고 있으며, LCD 패널 내부에 주입된 액정의 전기 광학적 성질을 이용한 액정표시장치(Liquid Crystal Display)가 활발하게 개발되어 왔고, 최근에는 평판 표시장치로서의 역할을 충분히 수행할 수 있을 정도로 개발되었다.In order to replace the CRT, it has the advantages of small size and light weight, and a liquid crystal display (Liquid Crystal Display) using the electro-optical properties of the liquid crystal injected into the LCD panel has been actively developed, and recently, as a flat panel display device, It was developed enough to play a role.

이와 같은 액정표시장치는 CRT와는 달리 TFT 기판과 칼라필터 기판 사이에 주입된 액정이 광을 발생시키는 발광소자가 아니라 외부에서 들어오는 광의 양을 조절하여 화면에 표시하는 수광소자이기 때문에 LCD 패널에 광을 조사하기 위한 별도의 광원, 즉 백라이트 장치가 반드시 필요하다. 따라서, 액정표시장치의 표시품위는 LCD 패널 자체뿐만 아니라 백라이트 장치의 성능에 의존하는 바가 크다.Unlike the CRT, the liquid crystal display device, unlike the CRT, is not a light emitting device that emits light, but a light receiving device that controls the amount of light from the outside and displays the light on the LCD panel. A separate light source for illuminating, i.e., a backlight device, is necessary. Therefore, the display quality of the liquid crystal display device largely depends on the performance of the backlight device as well as the LCD panel itself.

백라이트 어셈블리는 크게 백라이트 어셈블리는 크게 액정표시장치의 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.Back light assembly is large Back light assembly is large lamp assembly (lamp assembly) used as a light source of the liquid crystal display device, a light guide plate for guiding the light generated from the lamp assembly to the LCD panel, a sheet for diffusing and condensing the light guided from the light guide plate And a mold frame for accommodating and fixing the lamp assembly, the light guide plate, the sheets, and the like.

여기서, 램프 어셈블리는 빛을 발산하는 램프와, 램프의 양단에 끼워져 램프를 보호하는 램프 홀더와, 램프의 외주면을 감싸고 있어 램프에서 발산된 빛을 도광판으로 반사시키는 램프 커버로 구성된다.The lamp assembly includes a lamp for emitting light, a lamp holder inserted at both ends of the lamp to protect the lamp, and a lamp cover surrounding the outer circumferential surface of the lamp to reflect light emitted from the lamp to the light guide plate.

또한, 램프에서 발산된 빛을 LCD 패널에 균일하게 전달하기 위해 도광판은 램프 어셈블리와 인접한 일측면의 두께가 램프 어셈블리와 대향되는 타측면의 두께가 더 두꺼워, 액정표시장치를 구동시키는 각종 부품들은 도광판의 두께가 얇은 쪽에 설치된다.In addition, in order to uniformly transmit the light emitted from the lamp to the LCD panel, the light guide plate has a thicker thickness of one side adjacent to the lamp assembly and the other side facing the lamp assembly. Is installed on the thinner side.

그러나, 램프 어셈블리를 지지하기 위해 램프 어셈블리가 설치된 영역에 몰드프레임이 형성되어 있는데, 이로 인해 액정표시장치의 두께가 두꺼워지고 무게가 무거워진다.However, in order to support the lamp assembly, a mold frame is formed in an area in which the lamp assembly is installed. As a result, the thickness of the liquid crystal display is increased and the weight is heavy.

따라서, 본 발명의 목적은 상기와 같은 문제점을 감안하여 안출된 것으로써, 램프 어셈블리가 설치되는 쪽의 두께를 얇게하여 액정표시장치의 두께를 박형화하고 경량화시키는데 있다.Accordingly, an object of the present invention is to conceive in view of the above problems, and to reduce the thickness of the liquid crystal display device by reducing the thickness of the side on which the lamp assembly is installed.

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.

이와 같은 목적을 달성하기 위해서 본 발명은 램프 어셈블리가 위치하는 몰드프레임의 일단부를 제거하고, 충격으로부터 램프를 보호하기 위해서 램프 커버를 충격에 강한 금속재질로 형성하며, 램프 커버와 몰드프레임의 일단부를 고정수단으로 고정한다.In order to achieve the above object, the present invention removes one end of the mold frame in which the lamp assembly is located, and forms the lamp cover with a metal material resistant to shock, and protects the lamp from the shock. Secure with fastening means.

이하 본 발명에 의한 백라이트 어셈블리를 첨부된 도면 도 1 및 도 2를 참조하여 설명하면 다음과 같다. Hereinafter, the backlight assembly according to the present invention will be described with reference to FIGS. 1 and 2.

몰드프레임(110)은 장변방향 일측면이 개구되고, 상부면 가장자리를 따라 소정깊이의 수납공간(112)이 형성되며, 수납공간(112)의 외측에 형성된 몰드프레임(110)의 가장자리 중 개구된 장변방향 양단에는 암나사부(114)가 관통되어 형성된다. One side of the mold frame 110 is opened in a long side direction, and a storage space 112 having a predetermined depth is formed along an edge of the upper surface, and the mold frame 110 is opened out of an edge of the mold frame 110 formed outside the storage space 112. The female screw 114 is formed through both ends of the long side direction.

몰드프레임(110)의 개구된 장변방향 일측면에는 수나사부(140)에 의해 램프 어셈블리(120)가 체결되어 개구된 몰드프레임(110)의 장변방향 일측면을 폐쇄한다. 램프 어셈블리(120)는 액정표시장치의 광원으로 사용되는 램프(122)와, 램프(122)의 양단에 삽입되어 램프(122)를 외부의 충격으로부터 보호하는 램프 홀더(124)와, 램프(122)의 외주면을 감싸면서 몰드프레임(110)의 상부면과 하부면에 끼워지는 "ㄷ"자 형상의 램프 커버(126)로 구성된다.The lamp assembly 120 is fastened to the opened long side surface of the mold frame 110 by the male screw 140 to close the long side surface of the mold frame 110. The lamp assembly 120 includes a lamp 122 used as a light source of the liquid crystal display, a lamp holder 124 inserted into both ends of the lamp 122 to protect the lamp 122 from external impact, and a lamp 122 It is composed of a "c" shaped lamp cover 126 that is fitted to the upper surface and the lower surface of the mold frame 110 while wrapping the outer circumferential surface.

몰드프레임(110)에 형성된 암나사부(114)와 대응되는 램프 커버(126)에는 수나사 삽입홀(128)이 형성되어 개구된 몰드프레임(110)의 장변방향 일측면을 폐쇄하여 몰드프레임(110)의 역할을 한다. 여기서, 몰드프레임(110)의 일측면을 램프 커버(126)로 대신할 경우 램프(122)가 충격에 의해 파손되어 액정표시장치의 신뢰성이 저하되는 것을 방지하기 위해서 램프 커버(126)는 충격 및 강도가 높은 금속재질인 황동으로 형성된다.A male screw insertion hole 128 is formed in the lamp cover 126 corresponding to the female screw 114 formed in the mold frame 110 to close one side of the long side direction of the mold frame 110 opened to the mold frame 110. Plays a role. In this case, when one side of the mold frame 110 is replaced by the lamp cover 126, the lamp cover 126 may be impacted and damaged in order to prevent the lamp 122 from being damaged by the impact and thereby lowering the reliability of the liquid crystal display. It is made of brass, which is a high strength metal.

여기서, 미설명 부호 130은 램프에서 발산된 빛을 정보를 LCD 패널 쪽으로 절달하는 도광판이다.Here, reference numeral 130 is a light guide plate that delivers information emitted from the lamp to the LCD panel.

이와 같이 램프 어셈블리(120)가 설치되는 쪽의 몰드프레임(110)을 제거하고 몰드프레임(110)이 존재하지 않는 쪽에 램프 어셈블리(120) 중 램프 커버(126)를 끼워 수나사부(140)로 몰드프레임(110)과 램프 커버(126)를 조립하면 액정표시장치의 무게를 줄일 수 있다. As such, the mold frame 110 of the side where the lamp assembly 120 is installed is removed, and the lamp cover 126 of the lamp assembly 120 is inserted on the side where the mold frame 110 does not exist. Assembling the frame 110 and the lamp cover 126 may reduce the weight of the liquid crystal display.

또한, 램프 어셈블리(120) 쪽의 몰드프레임(110)의 두께가 램프 커버(126)이므로 액정표시장치의 두께를 줄일 수 있다.In addition, since the thickness of the mold frame 110 toward the lamp assembly 120 is the lamp cover 126, the thickness of the liquid crystal display may be reduced.

이상에서 설명한 바와 같이 본 발명은 몰드프레임의 일단부 소정영역을 제거하고, 제거된 부분에 몰드프레임을 대신하여 램프 어셈블리를 끼워 고정시킴으로써, 액정표시장치의 경량화, 박형화시킬 수 있는 효과가 있다.As described above, the present invention removes a predetermined region of one end of the mold frame and fixes the lamp assembly by replacing the mold frame with the removed mold, thereby reducing the weight and thickness of the liquid crystal display.

도 1은 본 발명에 의한 백라이트 어셈블리를 나타낸 분해 사시도이고,1 is an exploded perspective view showing a backlight assembly according to the present invention;

도 2a는 본 발명에 의한 백라이트 어셈블리를 조립한 사시도이며,Figure 2a is a perspective view of the assembled backlight assembly according to the present invention,

도 2b는 도 2a를 I-I선을 따라 절단한 종단면도이다. FIG. 2B is a longitudinal cross-sectional view of FIG. 2A taken along the line I-I. FIG.

Claims (3)

일단부 소정영역이 제거되고 상부면에 수납공간이 형성된 몰드프레임과;A mold frame having one end portion removed and a storage space formed on an upper surface thereof; 상기 몰드프레임 중 일단부 소정영역이 제거된 영역에 설치되어 상기 몰드프레임을 대신하는 램프 어셈블리로 구성되며,It is installed in a region where one end region of the mold frame is removed is composed of a lamp assembly to replace the mold frame, 상기 램프 어셈블리는 The lamp assembly 빛을 발산하는 램프와;A lamp for emitting light; 상기 램프의 외주면을 감싸고 일측면이 상기 램프의 길이방향을 따라 개구되어 상기 몰드프레임 중 소정영역이 제거된 일단부에 끼워져 상기 몰드프레임의 일단부를 폐쇄하는 램프 커버와;A lamp cover surrounding an outer circumferential surface of the lamp and having one side opened in a longitudinal direction of the lamp to be fitted to one end of a predetermined region of the mold frame to close one end of the mold frame; 상기 램프 커버와 상기 몰드프레임을 고정시키는 수단을 포함하는 것을 특징으로 하는 백라이트 어셈블리.And means for securing the lamp cover and the mold frame. 제 1 항에 있어서, 상기 램프 커버는 램프를 충격으로부터 보호하고 몰드프레임의 강도를 높이기 위해 황동재질로 형성된 것을 특징으로 하는 백라이트 어셈블리.The backlight assembly of claim 1, wherein the lamp cover is formed of brass to protect the lamp from impact and increase the strength of the mold frame. 제 1 항에 있어서, 상기 고정시키는 수단은 상기 램프 커버의 길이방향 양단에 형성된 수나사 삽입홀과, 상기 수나사 삽입홀과 대응되는 몰드프레임에 형성되고 내부에 나사산이 형성된 암나사부와, 상기 수나사 삽입홀과 상기 암나사부에 삽입되어 상기 몰드프레임과 상기 램프 커버를 고정시키는 수나사부로 구성된 것을 특징으로 하는 백라이트 어셈블리.According to claim 1, wherein the fixing means is a male screw insertion hole formed in both ends of the longitudinal direction of the lamp cover, a female screw portion formed in the mold frame corresponding to the male screw insertion hole and a thread formed therein, the male screw insertion hole And a male screw part inserted into the female screw part to fix the mold frame and the lamp cover.
KR10-1998-0030527A 1998-07-29 1998-07-29 Backlight assembly KR100490329B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101272893B1 (en) * 2006-05-02 2013-06-11 엘지디스플레이 주식회사 Back light unit and liquid crystal display module using thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH039304A (en) * 1989-06-07 1991-01-17 Mitsubishi Petrochem Co Ltd Backlight device
JPH0792463A (en) * 1993-09-20 1995-04-07 Hitachi Ltd Liquid crystal display device
JPH07114022A (en) * 1993-10-15 1995-05-02 Aimesu:Kk Back light device for liquid crystal display device
KR960042151A (en) * 1995-05-31 1996-12-21 엄길용 Cold Cathode Lamp Panel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH039304A (en) * 1989-06-07 1991-01-17 Mitsubishi Petrochem Co Ltd Backlight device
JPH0792463A (en) * 1993-09-20 1995-04-07 Hitachi Ltd Liquid crystal display device
JPH07114022A (en) * 1993-10-15 1995-05-02 Aimesu:Kk Back light device for liquid crystal display device
KR960042151A (en) * 1995-05-31 1996-12-21 엄길용 Cold Cathode Lamp Panel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101272893B1 (en) * 2006-05-02 2013-06-11 엘지디스플레이 주식회사 Back light unit and liquid crystal display module using thereof

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