KR100412320B1 - Lamp line connection structure of back light unit for liquid crystal display use - Google Patents

Lamp line connection structure of back light unit for liquid crystal display use Download PDF

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Publication number
KR100412320B1
KR100412320B1 KR1019970005793A KR19970005793A KR100412320B1 KR 100412320 B1 KR100412320 B1 KR 100412320B1 KR 1019970005793 A KR1019970005793 A KR 1019970005793A KR 19970005793 A KR19970005793 A KR 19970005793A KR 100412320 B1 KR100412320 B1 KR 100412320B1
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South Korea
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lamp
connection structure
lamp cover
light unit
back light
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KR1019970005793A
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Korean (ko)
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KR19980068981A (en
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이희춘
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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
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13452—Conductors connecting driver circuitry and terminals of panels
    • 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
    • G02B6/0025—Diffusing sheet or layer; Prismatic 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
    • G02B6/0013—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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/007—Incandescent lamp or gas discharge lamp

Abstract

PURPOSE: The lamp line connection structure of the back light unit for a liquid crystal display(LCD) use is provided to directly connect the lamp lines to two lamps used as a light source without using a separate conductive medium. CONSTITUTION: The cathode line(13) of a connector is directly connected to two lamps(12) of the back light unit for an LCD use. The back light unit includes a lamp cover(10), two lamps, a reflection sheet receiving lights reflected by a reflecting plate placed at the inside of the lamp cover, and a diffusion sheet. A barrel(20) is attached to the outside of the lamp cover. Both ends of the barrel are opened and a groove(21) is formed at the outer side of the barrel. The cathode line is mounted in the groove. The anode lines(14) of the connector is inserted into the barrel to be electrically connected to one side of the lamp.

Description

LCD용 백라이트 유니트의 램프도선 연결 구조Lamp lead connection structure of LCD backlight unit

본 발명은 LCD용 백라이트 유니트의 램프도선 연결 구조에 관한 것으로서, 더욱 상세하게는 광원으로 사용되는 램프에 램프도선이 직접 전기적으로 연결된 LCD용 백라이트 유니트의 램프도선 연결 구조에 관한 것이다.The present invention relates to a lamp lead connection structure of the LCD backlight unit, and more particularly to a lamp lead connection structure of the LCD backlight unit electrically connected to the lamp lead to a lamp used as a light source.

현재 각종 디스플레이 디바이스 중에서 가장 보편화되어 있는 것은 CRT(Cathode Ray Tube)로서 TV를 비롯해서 컴퓨터 모니터 등으로 널리 이용되고 있다.Currently, the most common among various display devices is a CRT (Cathode Ray Tube), which is widely used in TVs and computer monitors.

그러나, 각종 전자제품의 소형, 경량화되는 추세에서 CRT는 무게나 크기 등에 있어서 일정한 한계를 가지고 있으며 이를 대체할 것으로 예상되는 것으로 전계광학적인 효과를 이용한 액정표시소자(Liquid Crystal Display), 가스방전을 이용한 플라즈마 표시소자(Plasma Display Panel) 및 전계발광효과를 이용한 EL 표시소자 등이 있으며 그 중에서 액정표시소자(LCD)에 대한 연구가 활발히 진행되고 있다.However, in the trend of miniaturization and weight reduction of various electronic products, CRT has a certain limit in weight and size, and is expected to be replaced by liquid crystal display (LCD) using electro-optical effects and gas discharge. There are plasma display panels and EL displays using electroluminescent effects. Among them, research on liquid crystal displays (LCDs) has been actively conducted.

그런데 LCD는 CRT와 달리 스스로 발광하는 소자가 아니고 외부로부터 빛을 받아서 눈에 보이게 되는 수광소자이다. 따라서 별도의 광원을 필요로 하며 이러한 광원과 이 광원을 안내, 반사, 확산 및 집광하기 위한 일체의 도광판, 확산 시트, 반사 시트등의 부품으로 구성되어 LCD 패널을 배면에서 빛을 조사하는 장치를 백라이트 유니트라고 한다.However, unlike CRTs, LCDs are not light emitting devices, but are light receiving devices that receive light from the outside. Therefore, a separate light source is required, and it is composed of such a light source and an integrated light guide plate, a diffusion sheet, and a reflection sheet for guiding, reflecting, diffusing and condensing the light source. It is called a unit.

도 1은 종래 LCD용 백라이트 유니트의 램프도선 연결 구조를 나타낸 사시도이다.1 is a perspective view showing a lamp wire connection structure of a conventional LCD backlight unit.

도시된 바와 같이, 램프 커버(1)는 소정의 판부재가 "U"자형으로 절곡된 것으로, 그 양측부 및 전면부는 개구되어 있다.As shown in the figure, the lamp cover 1 has a predetermined plate member bent in a " U " shape, and both side portions and the front portion thereof are opened.

램프 커버(1) 내부에는 램프(2)가 설치되어 있는 바, 이 램프(2)는 램프 커버(1) 양측부에 형성된 램프 홀더(미도시)에 고정되어 램프 커버 내부에 설치되어 있다. 램프 커버(1)의 전면부에는 램프(2)로부터 전파된 빛을 반사 시트(미도시)를 통하여 확산 시트(미도시)로 반사되도록 하는 도광판(미도시)이 설치되어 있다.A lamp 2 is provided inside the lamp cover 1, and the lamp 2 is fixed to a lamp holder (not shown) formed at both sides of the lamp cover 1, and is installed inside the lamp cover. A light guide plate (not shown) is provided on the front portion of the lamp cover 1 to reflect the light propagated from the lamp 2 to the diffusion sheet (not shown) through the reflection sheet (not shown).

또한, 램프(2)의 빛은 도광판에 직접 전파되기도 하고, 램프 커버(1) 내부에 형성된 반사판(미도시)에 의해 반사되어 전파되기도 한다.In addition, the light of the lamp 2 may be directly propagated through the light guide plate, or may be reflected and propagated by a reflector (not shown) formed inside the lamp cover 1.

램프 커버(1)의 일측부에 연장되어 소정 크기의 판부재(6)가 형성되어 있고, 램프 커버(1) 내부에 설치된 램프(2)의 일측에는 외부와 전기적인 접속을 가능케하는 콘넥터(미도시)의 양극 도선(3)이 접속되어 있고, 콘넥터의 음극 도선(5)은 판부재(6)에 접속되어 있다.A plate member 6 having a predetermined size is formed extending from one side of the lamp cover 1, and a connector for allowing electrical connection with the outside is provided on one side of the lamp 2 installed inside the lamp cover 1 (not shown). Is connected to the positive electrode wire 3, and the negative electrode wire 5 of the connector is connected to the plate member 6.

상기 램프 커버(1) 및 판부재(6)는 전기가 흐를 수 있는 황동 재질의 도체로서, 램프 커버(1)의 타측부에 소정의 돌출부(7)를 형성하여 콘넥터의 음극 도선(5)을 대신하여 이 돌출부(7)가 램프(2)의 타측부에 접속되어 있다.The lamp cover 1 and the plate member 6 are brass conductors through which electricity can flow. The lamp cover 1 and the plate member 6 form a predetermined protrusion 7 on the other side of the lamp cover 1 to connect the cathode lead 5 of the connector. Instead, this protrusion 7 is connected to the other side of the lamp 2.

미설명 부호 4는 콘넥터의 음극 도선(5)이 용이하게 판부재(6)에 전기적으로 접속하기 위한 판부재(6)상에 형성된 접속 부재이다.Reference numeral 4 is a connecting member formed on the plate member 6 for easily connecting the negative electrode wire 5 of the connector to the plate member 6.

상기와 같이 구성된 종래 LCD용 백라이트 유니트의 램프도선 연결 구조에 따르면, 콘넥터의 음극 도선이 도전체인 램프 커버에 직접 전기적으로 연결됨으로 인해, 램프 커버 자체에서 전류 누설(leakage)가 심하게 발생되는 문제점이 있었다.According to the lamp lead connection structure of the conventional LCD backlight unit configured as described above, since the negative lead of the connector is directly connected to the lamp cover, which is a conductor, there is a problem that the current leakage (leakage) occurs badly in the lamp cover itself. .

또한, 상기와 같은 문제점은 램프 커버 자체가 고열이 되도록 하여 LCD 패널의 액정 열화 및 뿌옇게 되는 백화 현상이 생기등 품질 저하를 가져오는 문제점도 있었다.In addition, the problem as described above also has a problem that the lamp cover itself is a high temperature, such as deterioration of the liquid crystal of the LCD panel and whitening phenomenon occurs, such as the quality degradation.

본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 광원으로 사용되는 램프에 램프도선이 별도로 도전성의 매개체를 통하지 않고 직접 전기적으로 연결된 LCD용 백라이트 유니트의 램프도선 연결 구조를 제공하는 데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a lamp lead connection structure of a backlight unit for an LCD, in which a lamp lead is directly and electrically connected to a lamp used as a light source without a separate conductive medium. .

도 1은 종래 LCD용 백라이트 유니트의 램프도선 연결 구조를 나타낸 사시도,1 is a perspective view showing a lamp wire connection structure of a conventional LCD backlight unit;

도 2는 본 발명에 의한 LCD용 백라이트 유니트의 램프도선 연결를 나타낸 사시도.Figure 2 is a perspective view showing the lamp wire connection of the backlight unit for LCD according to the present invention.

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

10 : 램프 커버12 : 램프13 : 음극 도선10 lamp cover 12 lamp 13 cathode wire

14 : 양극 도선20 : 통체21 : 홈부14 anode wire 20 cylinder 21 groove

상기와 같은 목적을 달성하기 위한 본 발명에 의한 LCD용 백라이트 유니트의 램프도선 연결 구조는 램프 커버와, 상기 램프 커버 내부에 소정의 고정 수단에 의해 고정된 램프와, 상기 램프의 빛을 상기 램프 커버 내부의 반사판에 의해 반사되는 빛을 받는 반사 시트 및 확산 시트를 포함하는 LCD용 백라이트 유니트의 램프도선 연결 구조에 있어서, 상기 램프 커버의 외측에 상기 램프도선이 상기 램프에 전기적으로 연결되도록 소정 깊이의 홈부가 형성된 통체 부재가 부착되는 것을 특징으로 한다.Lamp lead connection structure of the LCD backlight unit according to the present invention for achieving the above object is a lamp cover, a lamp fixed by a predetermined fixing means inside the lamp cover, and the light of the lamp to the lamp cover A lamp lead connection structure of a backlight unit for an LCD including a reflecting sheet and a diffusion sheet receiving light reflected by an inner reflecting plate, wherein the lamp lead is electrically connected to the lamp at an outer side of the lamp cover. A cylindrical member having a groove portion is attached thereto.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세하게 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 의한 LCD용 백라이트 유니트의 램프도선 연결 구조를 나타낸 사시도이다.2 is a perspective view showing a lamp wire connection structure of the backlight unit for LCD according to the present invention.

본 발명에 의한 LCD용 백라이트 유니트의 램프도선 연결 구조는 램프 커버(10), 램프 커버(10) 내부에 램프 홀더(미도시)등의 고정 수단에 고정된 램프(12), 램프(12)의 빛을 램프 커버(10) 내부의 반사판(미도시)에 의해 반사되는 빛을 받는 반사 시트(미도시) 및 확산 시트(미도시)를 포함하는 LCD용 백라이트 유니트의 램프(12)에 전원을 공급하기 위해 콘넥터(미도시)의 음극 도선(13)이 램프(12)에 직접 전기적으로 연결되도록 한 것이 그 특징이다.The lamp lead connection structure of the backlight unit for an LCD according to the present invention includes a lamp cover 10 and a lamp 12 fixed to fixing means such as a lamp holder (not shown) inside the lamp cover 10. Power is supplied to the lamp 12 of the backlight unit for an LCD including a reflection sheet (not shown) and a diffusion sheet (not shown) that receive light reflected by a reflector (not shown) inside the lamp cover 10. To this end, the negative electrode 13 of the connector (not shown) is characterized in that it is electrically connected directly to the lamp 12.

램프 커버(10)의 일측단부에는 양단이 개구되고, 외측에 도선이 안착되는 소정 깊이의 홈부(21)가 형성된 통체(20)가 부착된다. 통체(20) 내부에는 콘넥터(미도시)의 양극 도선(14)이 삽입되어 램프(12)의 일측에 전기적으로 접속되어 있고, 통체(20) 외측의 홈부(21)에는 콘넥터의 음극 도선(13)이 안착되어 램프 커버(10)의 외측을 돌아 램프(12)의 타측에 전기적으로 접속된다.Both ends are opened to one side end of the lamp cover 10, and a cylindrical body 20 having a groove portion 21 having a predetermined depth on which the conductive wire is seated is attached to the outside. An anode lead 14 of a connector (not shown) is inserted into the cylinder 20 to be electrically connected to one side of the lamp 12, and a cathode lead 13 of the connector is provided in the groove 21 outside the cylinder 20. ) Is seated and is electrically connected to the other side of the lamp 12 around the outside of the lamp cover 10.

이상 살펴본 바와 같이, 본 발명에 의한 LCD용 백라이트 유니트의 램프도선 연결 구조는 외부로부터 전원을 인가받을 수 있도록 콘넥터의 음극 도선이 종래에서 처럼, 별도로 도전체인 램프 커버를 통하지 않는 대신에 램프 커버 일부분의 형상을 변경하여 램프에 음극 도선을 연결함으로써, 음극 도선이 좁은 공간에서도 설치 가능한 효과가 있다.As described above, the lamp lead connection structure of the backlight unit for LCD according to the present invention has a negative lead of the connector so that the power can be applied from the outside, as in the prior art, instead of passing through the lamp cover which is a separate conductor, By changing the shape and connecting the cathode lead to the lamp, the cathode lead can be installed in a narrow space.

또한, 종래에서처럼, 콘넥터의 음극 도선을 도전체인 램프 커버를 거치지 않고 램프에 직접 연결함으로써, 램프 커버 자체에 전혀 열이 발생되지 않아 LCD 패널의 액정 열화 및 뿌옇게 되는 백화 현상이 없어지는 효과가 있다.In addition, as in the related art, by directly connecting the cathode lead of the connector to the lamp without passing through the lamp cover which is a conductor, the lamp cover itself does not generate any heat, thereby eliminating the liquid crystal deterioration and whitening of the LCD panel.

Claims (2)

램프 커버와, 상기 램프 커버 내부에 소정의 고정 수단에 의해 고정된 램프와, 상기 램프의 빛을 상기 램프 커버 내부의 반사판에 의해 반사되는 빛을 받는 반사 시트 및 확산 시트를 포함하는 LCD용 백라이트 유니트의 램프도선 연결 구조에 있어서, 상기 램프 커버의 외측에 상기 램프도선이 상기 램프에 전기적으로 연결되도록 소정 깊이의 홈부가 형성된 통체 부재가 부착되는 것을 특징으로 하는 LCD용 백라이트 유니트의 램프도선 연결 구조.A backlight unit for an LCD including a lamp cover, a lamp fixed by a predetermined fixing means inside the lamp cover, and a reflection sheet and a diffusion sheet for receiving the light reflected by the reflection plate inside the lamp cover; The lamp lead connection structure of claim 1, wherein a tubular member having a groove portion having a predetermined depth is attached to the outside of the lamp cover to electrically connect the lamp lead to the lamp. 제 1 항에 있어서, 상기 통체 부재의 홈부에 설치되는 램프도선은 음극 도선인 것을 특징으로 하는 LCD용 백라이트 유니트의 램프도선 연결 구조.The lamp lead connection structure of an LCD backlight unit of claim 1, wherein the lamp lead provided in the groove of the tubular member is a cathode lead.
KR1019970005793A 1997-02-25 1997-02-25 Lamp line connection structure of back light unit for liquid crystal display use KR100412320B1 (en)

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Publication number Priority date Publication date Assignee Title
JPH04206434A (en) * 1990-11-30 1992-07-28 Hitachi Ltd Fluorescent lamp for liquid crystal back light
KR940004367A (en) * 1992-08-03 1994-03-15 쯔지 하루오 Liquid crystal display
KR950031198U (en) * 1994-04-19 1995-11-22 Back light lead fixing device of LCD
JPH0882715A (en) * 1994-09-13 1996-03-26 Hitachi Ltd Liquid crystal display device
JPH0895037A (en) * 1994-09-21 1996-04-12 Alps Electric Co Ltd Liquid crystal display device provided with back light
KR970063598U (en) * 1996-05-22 1997-12-11 LCD Display Module
KR19980066747A (en) * 1997-01-28 1998-10-15 구자홍 LCD Display

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04206434A (en) * 1990-11-30 1992-07-28 Hitachi Ltd Fluorescent lamp for liquid crystal back light
KR940004367A (en) * 1992-08-03 1994-03-15 쯔지 하루오 Liquid crystal display
KR950031198U (en) * 1994-04-19 1995-11-22 Back light lead fixing device of LCD
JPH0882715A (en) * 1994-09-13 1996-03-26 Hitachi Ltd Liquid crystal display device
JPH0895037A (en) * 1994-09-21 1996-04-12 Alps Electric Co Ltd Liquid crystal display device provided with back light
KR970063598U (en) * 1996-05-22 1997-12-11 LCD Display Module
KR19980066747A (en) * 1997-01-28 1998-10-15 구자홍 LCD Display

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