KR20080056875A - Integrating feedback control type back lighting inverter circuit of multi channel lamp - Google Patents

Integrating feedback control type back lighting inverter circuit of multi channel lamp Download PDF

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KR20080056875A
KR20080056875A KR1020060129998A KR20060129998A KR20080056875A KR 20080056875 A KR20080056875 A KR 20080056875A KR 1020060129998 A KR1020060129998 A KR 1020060129998A KR 20060129998 A KR20060129998 A KR 20060129998A KR 20080056875 A KR20080056875 A KR 20080056875A
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South Korea
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lamp
electrode
lamps
circuit board
printed circuit
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KR1020060129998A
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Korean (ko)
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한재현
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엘지이노텍 주식회사
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Publication of KR20080056875A publication Critical patent/KR20080056875A/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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/02—Details
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3927—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by pulse width modulation

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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)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Planar Illumination Modules (AREA)

Abstract

An installation structure of a large scale LCD back-lighting lamp is provided to improve an electric characteristic in a lamp control and a lamp driving without an electric interference by forming an electric connection path of a shortest distance between a printed circuit board and a lamp electrode. An installation structure of a large scale LCD back-lighting lamp includes a first lamp(11), a second lamp(12), an LCD panel(10), a printed circuit board(14), and a connector(16). The first and second lamps are installed on an edge line of a long axis direction or a short axis direction of the LCD panel in parallel so that an electric connection path between the printed circuit board and the first and second electrodes is a shortest distance. The connector is electrically coupled to the first and second electrodes. An inverter circuit having a connector is designed on the printed circuit board. The printed circuit board is installed in parallel with the first and second lamps.

Description

다채널 램프의 통합 피드백 제어형 백라이팅 인버터회로 {INTEGRATING FEEDBACK CONTROL TYPE BACK LIGHTING INVERTER CIRCUIT OF MULTI CHANNEL LAMP}Integrated feedback-controlled backlighting inverter circuit for multi-channel lamps {INTEGRATING FEEDBACK CONTROL TYPE BACK LIGHTING INVERTER CIRCUIT OF MULTI CHANNEL LAMP}

도 1은 종래 램프의 연결 구조를 간략히 도시한 구조도.1 is a schematic structural diagram showing a connection structure of a conventional lamp.

도 2는 본 발명의 구성을 간략히 도시한 구조도.Figure 2 is a schematic diagram showing the configuration of the present invention.

도 3은 본 발명의 일 실시예에 따른 구성을 간략히 도시한 구조도.3 is a structural diagram schematically showing a configuration according to an embodiment of the present invention.

도 4는 본 발명의 타 실시예에 따른 구성을 간략히 도시한 구조도.Figure 4 is a schematic diagram showing the configuration according to another embodiment of the present invention.

<도면의 주요부분에 대한 부호 설명><Description of Signs of Major Parts of Drawings>

10 : LCD패널 11 : 램프110 LCD panel 11: Lamp 1

12 : 램프2 13 : 전극12 lamp 2 13 electrode

13A : HI전극 13B : LO전극13A: HI electrode 13B: LO electrode

14 : 인쇄회로기판 15 : 인버터회로14: printed circuit board 15: inverter circuit

16 : 커넥터 16A : HI 커넥터16: connector 16A: HI connector

16B : LO 커넥터16B: LO Connector

본 발명은 대면적 LCD 백라이팅 램프의 설치구조에 관한 것이다.The present invention relates to an installation structure of a large area LCD backlighting lamp.

최근 들어 급속한 발전을 거듭하고 있는 반도체 산업의 기술 개발에 의하여 소형, 경량화 되면서 성능이 더욱 강력해진 제품들이 생산되고 있다. 이 중 액정표시장치는 현재 디스플레이 장치를 필요로 하는 거의 모든 정보 처리 기기에 장착되고 있는 실정이다. Recently, due to the rapid development of technology in the semiconductor industry, small, lighter weight and more powerful products are being produced. Among them, the liquid crystal display device is currently installed in almost all information processing equipment requiring a display device.

상기 액정표시장치는 액정의 특정한 분자배열에 전압을 인가하여 다른 분자배열로 변환시키고 이러한 분자 배열에 의해 발광하는 액정 셀(cell)의 복 굴절성, 선광성, 2색성 및 광 산란 특성 등의 광학적 성질의 변화를 시각 변화로 변환하는 것으로, 액정 셀에 의한 빛의 변조를 이용한 디스플레이 장치이다.The liquid crystal display device has an optical property such as birefringence, photoreactivity, dichroism, and light scattering characteristics of a liquid crystal cell that applies a voltage to a specific molecular array of liquid crystals, converts it into another molecular array, and emits light by the molecular array. It is a display device that uses the modulation of light by a liquid crystal cell by converting the change of the light into a visual change.

이러한, 액정표시장치는 자체적으로 발광하지 못하는 수광 소자이기 때문에, 액정 패널의 후면에 부착된 백라이트(Back-light)를 이용하여 액정패널을 조명한다. 액정 패널의 광 투과율은 인가된 전기적 신호에 따라 조절되며, 이에 대응되어 정지된 화상이나 움직이는 화상이 액정 패널 상에 표현된다. Since the liquid crystal display is a light-receiving element that does not emit light by itself, the liquid crystal panel is illuminated by using a backlight attached to the rear surface of the liquid crystal panel. The light transmittance of the liquid crystal panel is adjusted according to an applied electrical signal, and a still image or a moving image is correspondingly represented on the liquid crystal panel.

상기와 같이 액정패널로 광 공급을 수행하는 백라이트 유닛에서 사용되는 램프는 일반적으로 냉음극형광램프(Cold Cathode Fluorescent Lamp: CCFL)가 사용되고 있다.As a lamp used in the backlight unit for supplying light to the liquid crystal panel as described above, a cold cathode fluorescent lamp (CCFL) is generally used.

현재까지 일반적으로 사용되고 있는 노트북용 LCD는 1램프 방식의 CCFL이 사 용되어 백라이팅 역할을 하고 있는데, 근래에 노트북 사용자의 활용범위가 다양화(멀티미디어, 엔터테인먼트)되면서, Wide형태의 LCD Size가 표준화되고 있다. Notebook LCD, which is generally used up to now, uses a single lamp CCFL to play a backlighting function. Recently, as the use range of notebook users is diversified (multimedia, entertainment), wide LCD size is standardized. have.

결국, 이러한 16:9비율을 가지는 패널은 기존 패널(4:3)보다 낮은 휘도를 가지는데, 이를 해결하기 위해 LCD업체에서는 램프를 추가하거나 LED 백라이팅을 구현시도 하고 있다. 특히, 최근에는 고휘도를 위한 2 램프를 통해 백라이팅이 이루어지도록 하는 기술이 소개되기 시작했다.As a result, a panel having a 16: 9 ratio has a lower luminance than a conventional panel (4: 3). To solve this problem, LCD companies are adding lamps or implementing LED backlighting. In particular, recently, a technology for enabling backlighting through two lamps for high brightness has been introduced.

일반적으로, 램프의 양단은 구분상 HI전극과 LO전극으로 나뉘는데, 이때, 상기 HI전극은 인버터의 구동제어부를 거쳐 트랜스포머에서 승압된 신호를 출력하는 HI단 커넥터에 연결되며, LO전극은 램프의 동작 상태를 센싱하는 Isense단(전류 피드백 단)의 LO단 커넥터에 연결된다.In general, both ends of the lamp are divided into HI electrode and LO electrode. The HI electrode is connected to an HI terminal connector for outputting a boosted signal from a transformer through a drive control unit of an inverter. It is connected to the LO terminal connector of the Isense terminal (current feedback stage) which senses a state.

이러한 종래 램프 연결구조를 구체적으로 설명하면, 첨부 도면 도 1에 도시된 바와 같이, LCD패널(1)의 양측에 각각 램프(2)를 구비시키고, 각각의 전극(3A)(3B)을 인버터회로(3)에 연결, 즉, LCD패널(1) 양측의 Edge부분에 램프(2)를 위치시키고, 인버터회로(4)의 HI단 커넥터(5A)와 LO단 커넥터(5B)를 인버터회로(4)의 양측에 구비시켜, 인버터회로(4)와 램프(2)가 전선(W)을 통해 연결된다.Specifically, the conventional lamp connection structure will be described. As shown in FIG. 1, lamps 2 are provided on both sides of the LCD panel 1, and respective electrodes 3A and 3B are provided with an inverter circuit. (3), i.e., the lamp 2 is placed at the edges of both sides of the LCD panel 1, and the HI terminal connector 5A and the LO terminal connector 5B of the inverter circuit 4 are connected to the inverter circuit 4 ), The inverter circuit 4 and the lamp 2 are connected via an electric wire (W).

그러나, 이와 같은 램프의 연결구조에서는 HI측을 연결하는 전선은 그 길이가 짧은 반면에, LO측을 연결하는 전선은 그 길이가 최소한 램프의 길이만큼 길어져, 램프 구동 시, 전기적인 간섭을 받게 되며, 이는 인버터회로 설계 시, 복잡한 패턴구조를 가지게 되는 구조적인 문제점이 있다.However, in such a lamp connection structure, the length of the wire connecting the HI side is short, whereas the length of the wire connecting the LO side is at least as long as the length of the lamp, which causes electrical interference when driving the lamp. This is a structural problem that has a complicated pattern structure when designing an inverter circuit.

또한, TV나, 대형 모니터와 같이 Panel 및 인버터의 두께에 크게 영향을 받 지 않은 구조에서는 램프 양극의 전선을 최대한 짧게 하거나 인버터를 패널 배면에 위치하여 간섭을 최소화 할 수 있지만, 노트북에서의 인버터는 높이 및 폭의 제약을 받기 때문에, 패널 배면에 위치할 수 없으며, 패널 Edge부분에 위치하더라도, 그 폭이 15mm정도 이내로 설계되어야하는 제약이 따르는 문제점이 있다. In addition, in structures that are not greatly affected by the thickness of panels and inverters such as TVs and large monitors, the interference of the lamps can be minimized by shortening the wires of the lamp anode as short as possible or by placing the inverter on the back of the panel. Because of the constraint of height and width, it cannot be located on the back of the panel, and even if located on the panel edge, there is a problem that the width must be designed within about 15 mm.

본 발명은 램프 제어 및 램프 구동 시, 전기적인 간섭을 받지 않으며, 제품의 조립 및 수리 보수에 따른 작업성을 향상시키는 대면적 LCD 백라이팅 램프의 설치구조를 제공한다.The present invention provides an installation structure of a large area LCD backlighting lamp that does not receive electrical interference during lamp control and lamp driving, and improves workability according to assembly and repair of a product.

본 발명은 대면적 LCD에 백라이트로 이용되는 다중 램프의 설치 구조에 있어서, 램프1ㆍ2의 전극과 인쇄회로기판과의 전선 연결 경로가 최단거리에서 이루어지도록, 램프1ㆍ2를 LCD패널의 장축 또는 단축 방향의 일측 라인(EDGE)에 평행하게 설치하되, 상기 램프1ㆍ2 각각의 전극과 전선 연결되는 커넥터가 양단에 각각 마련된 인버터회로가 설계된 인쇄회로기판을 상기 램프1ㆍ2와 평행하게 설치하여 구성된다. In the present invention, in the installation structure of multiple lamps used as a backlight for a large area LCD, the lamps 1 and 2 are long-axis of the LCD panel so that the wire connection path between the electrodes of the lamps 1 and 2 and the printed circuit board is made at the shortest distance. Alternatively, the printed circuit board may be installed in parallel with one side line EDGE in a short axis direction, and the inverter circuit may be installed in parallel with the lamps 1 and 2 in which inverter circuits having connectors connected to wires of each of the lamps 1 and 2 are connected at both ends. It is configured by.

상기 램프1ㆍ2의 전극은 HI전극과 LO전극으로 나뉘며, 인버터회로의 커넥터는 트랜스포머에서 승압된 신호를 출력하는 커넥터를 HI단 커넥터로, 램프의 동작 상태를 센싱하는 Isense부의 커넥터를 LO단 커넥터로 구분하여 구성된 것을 특징으 로 한다.The electrodes of the lamps 1 and 2 are divided into HI electrodes and LO electrodes. The connector of the inverter circuit is a connector for outputting a boosted signal from a transformer as a HI terminal connector, and a connector for an isense part for sensing an operation state of a lamp is a LO terminal connector. It is characterized by consisting of.

상기 인쇄회로기판에 설계된 인버터회로는 인버터 구동IC로부터 PWM 신호가 입력되면, 드라이버IC HI/LO신호를 출력하고, FET를 포함한 스위칭부가 상기 HI/LO신호를 구동 신호로 하여 램프 제어 신호를 출력하며, 상기 램프 제어 신호가 트랜스포머를 통해 승압 출력되어, 상기 HI단 커넥터를 통해 램프1ㆍ2 각각의 HI전극으로 전달되며, 상기 LO단 커넥터와 연결된 Isense부가 램프1ㆍ2의 동작 신호를 구동IC로 피드백 시키도록 설계 구성된 것을 특징으로 한다.The inverter circuit designed on the printed circuit board outputs a driver IC HI / LO signal when a PWM signal is input from an inverter driving IC, and a switching unit including a FET outputs a lamp control signal using the HI / LO signal as a driving signal. The ramp control signal is boosted and output through a transformer, and the HI control is transferred to the HI electrodes of the lamps 1 and 2 through the HI terminal connector, and an Isense unit connected to the LO terminal connector drives the operation signal of the lamps 1 and 2 to the driving IC. Characterized in that it is designed to be feedback.

상기 램프1ㆍ2의 일측 단 전극은 HI전극으로, 타측 단의 전극은 LO전극으로 일치시키고, 램프1ㆍ2의 HI전극 방향에 위치하는 인쇄회로기판 단부에 HI단 커넥터를, 램프1ㆍ2의 LO전극 방향에 위치하는 인쇄회로기판 단부에 HI단 커넥터를 위치시켜서 구성된 것을 특징으로 한다.One end electrode of the lamps 1 and 2 corresponds to the HI electrode, and the electrode of the other end is matched to the LO electrode, and an HI terminal connector is placed at the end of the printed circuit board positioned in the direction of the HI electrode of the lamps 1 and 2, and the lamps 1 and 2 It characterized in that it is configured by placing the HI-end connector on the end of the printed circuit board located in the direction of the LO electrode.

상기 LCD패널의 장축 일측단에 평행하게 설치되는 램프1ㆍ2와 역시 평행하게 인버터회로가 설계된 인쇄회로기판을 설치하되, 램프1 양단의 전극과 램프2 양단의 전극을 상호 반대로 배치하고, 인쇄회로기판 양단 각각의 커넥터 역시, 상호 반대로 배치시켜서 구성된 것을 특징으로 한다.A printed circuit board in which an inverter circuit is also designed in parallel with the lamps 1 and 2 installed in parallel with one end of the long axis of the LCD panel is installed, and the electrodes at both ends of the lamp 1 and the electrodes at both ends of the lamp panel are disposed opposite to each other. Each connector on both ends of the board is also characterized by being arranged opposite to each other.

본 발명을 첨부된 도면을 참조하여 설명하면 아래와 같다. Hereinafter, the present invention will be described with reference to the accompanying drawings.

도 2는 본 발명의 구성을 간략히 도시한 구조도이고, 도 3은 본 발명의 일 실시예에 따른 구성을 간략히 도시한 구조도이며, 도 4는 본 발명의 타 실시예에 따른 구성을 간략히 도시한 구조도이다.Figure 2 is a schematic diagram showing the configuration of the present invention, Figure 3 is a schematic diagram showing the configuration according to an embodiment of the present invention, Figure 4 is a schematic diagram showing the configuration according to another embodiment of the present invention to be.

먼저, 본 발명은 첨부 도면 도 2에 도시된 바와 같이, 대면적 LCD에 백라이트로 이용되는 다중 램프의 설치 구조에 있어서, 램프1ㆍ2(11)(12)의 전극(13)과 인쇄회로기판(14)과의 전선(W) 연결 경로가 최단거리에서 이루어지도록, 램프1ㆍ2(11)(12)를 LCD패널(10)의 장축 또는 단축 방향의 일측 라인(EDGE)에 평행하게 설치하되, 상기 램프1ㆍ2(11)(12) 각각의 전극(13)과 전선(W) 연결되는 커넥터(16)가 양단에 각각 마련된 인버터회로(15)가 설계된 인쇄회로기판(14)을 상기 램프1ㆍ2(11)(12)와 평행하게 설치한 것이다. First, the present invention, as shown in the accompanying drawings, Figure 2, in the installation structure of a multiple lamp used as a backlight in a large area LCD, the electrode 13 and the printed circuit board of the lamp 1 (2) 11 (12) Lamps 1 and 2 (11) and 12 are installed in parallel with one side line EDGE of the long axis or short axis direction of the LCD panel 10 so that the wire W connection path with the 14 is made in the shortest distance. The lamp 14 includes a printed circuit board 14 having an inverter circuit 15 provided at both ends thereof with connectors 16 connected to electrodes 13 and wires W of each of the lamps 1, 2, and 11. It is provided in parallel with the 1, 2 (11) 12.

여기서, 본 발명에서는 다중(다채널) 램프의 실시예로, 램프1(11)과 램프2(12)를 일 실시예로 적용하였으나, 램프의 개수는 한정되지 않고, 필요에 따라 램프1 ~ 램프n 까지 적용 가능하다.Here, although the lamp 1 (11) and the lamp 2 (12) is applied to one embodiment as an embodiment of the multi- (multi-channel) lamp in the present invention, the number of lamps is not limited, lamp 1 ~ lamp as needed Up to n is applicable.

한편, 본 발명 중 전술한 램프1ㆍ2(L1)(L2)의 전극(13)은 예컨대, HI전극(13A)과 LO전극(13B)으로 나뉘며, 인버터회로(15)의 커넥터(16)는 트랜스포머에서 승압된 신호를 출력하는 커넥터를 HI단 커넥터(16A)로, 램프의 동작 상태를 센싱하는 Isense부(전류 피드백 단)의 커넥터를 LO단 커넥터(16B)로 구분하여 구성할 수 있다.On the other hand, the electrode 13 of the lamps 1 and 2 (L1) and L2 described above is divided into, for example, the HI electrode 13A and the LO electrode 13B, and the connector 16 of the inverter circuit 15 is The connector for outputting the boosted signal from the transformer may be configured as the HI terminal connector 16A, and the connector of the Isense unit (current feedback terminal) for sensing the operation state of the lamp may be configured as the LO terminal connector 16B.

또한, 본 발명 중 전술한 인쇄회로기판(11)에 설계된 인버터회로(14)는 예컨대, 인버터 구동IC로부터 PWM 신호가 입력되면, 드라이버IC HI/LO신호를 출력하고, FET(전계효과트랜지스터)와 같은 능동소자를 포함한 스위칭부가 상기 HI/LO신호를 구동 신호로 하여 램프 제어 신호를 출력하며, 상기 램프 제어 신호가 트랜스포머를 통해 승압 출력되어, 상기 HI단 커넥터(16A)를 통해 램프1ㆍ2(11)(12) 각각의 HI전극(13A)으로 전달되며, 상기 LO단 커넥터(16B)와 연결된 Isense부가 램프1ㆍ2(11)(12)의 동작 신호를 구동IC로 피드백 시키도록 설계될 수 있다.In addition, the inverter circuit 14 designed on the above-described printed circuit board 11 of the present invention outputs a driver IC HI / LO signal, for example, when a PWM signal is input from the inverter driving IC, and the FET (field effect transistor) and the like. A switching unit including the same active element outputs a lamp control signal using the HI / LO signal as a drive signal, and the lamp control signal is boosted and output through a transformer, and the lamp 1, 2 ( 11) (12) is transferred to each HI electrode 13A, and isense part connected to the LO terminal connector 16B can be designed to feed back the operation signal of the lamps 1, 2 (11, 12) to the driving IC. have.

이와 같이 된 본 발명은 일실시예로, 첨부 도면 도 3에 도시된 바와 같이, LCD패널(10)의 장축 일측단에 평행하게 설치되는 램프1ㆍ2(11)(12)와 역시 평행하게 인버터회로(15)가 설계된 인쇄회로기판(14)을 설치하되, 램프1ㆍ2(11)(12)의 일측 단 전극은 HI전극(13A)으로 , 타측 단의 전극은 LO전극(13B)으로 일치시키고, 램프1ㆍ2(L1)(L2)의 HI전극(13A) 방향에 위치하는 인쇄회로기판(11) 단부에 HI단 커넥터(16A)를, 램프1ㆍ2(L1)(L2)의 LO전극(13B) 방향에 위치하는 인쇄회로기판(11) 단부에 HI단 커넥터(16B)를 위치시킬 수 도 있다.As described above, the present invention is an embodiment, as shown in Figure 3, the inverter also parallel to the lamp 1/2 (11) (12) is installed in parallel to one end of the long axis of the LCD panel 10 The printed circuit board 14, in which the circuit 15 is designed, is provided, wherein one end electrode of the lamps 1, 2, 11, 12 is the HI electrode 13A, and the other end electrode is the LO electrode 13B. Then, the HI terminal connector 16A is placed at the end of the printed circuit board 11 positioned in the direction of the HI electrode 13A of the lamps 1 and 2 (L1) and L2, and the LO of the lamps 1 and 2 (L1) and L2. The HI terminal connector 16B may be positioned at an end portion of the printed circuit board 11 positioned in the direction of the electrode 13B.

또한, 본 발명은 타 일실시예로, 첨부 도면 도 4에 도시된 바와 같이, LCD패널(10)의 장축 일측단에 평행하게 설치되는 램프1ㆍ2(11)(12)와 역시 평행하게 인버터회로(15)가 설계된 인쇄회로기판(14)을 설치하되, 램프1(11) 양단의 전극과 램프2(12) 양단의 전극을 상호 반대로 배치하고, 인쇄회로기판(14) 양단 각각의 커넥터 역시, 상호 반대로 배치할 수 도 있다.In addition, according to another embodiment of the present invention, as shown in FIG. 4, the inverter is also parallel to the lamps 1 and 2 (11) and 12 which are installed in parallel to one end of the long axis of the LCD panel 10. A printed circuit board 14 having a circuit 15 designed thereon is installed, and electrodes on both ends of the lamp 1 11 and electrodes on both ends of the lamp 2 12 are disposed opposite to each other, and connectors of each end of the printed circuit board 14 are also provided. They can also be placed opposite each other.

즉, 램프1(11)의 일측 단 전극은 HI전극(13A)으로, 램프1(11)의 HI전극(13A) 방향에 위치한 램프2(12)의 일측 단 전극은 LO전극(13B)으로 하고, 인쇄회로기판(14)의 일측 단에는 램프1(11)의 HI전극(13A)에 대응하는 HI단 커넥터(16A)와 램프2(12)의 LO전극(13B)에 대응하는 LO단 커넥터(16B)를 각각 마련하며, 램프1(11)의 타측 단 전극은 LO전극(13B)으로, 램프1(11)의 LO전극(13B) 방향에 위치한 램프2(12)의 일측 단 전극은 HI전극(13A)으로 하고, 인쇄회로기판(14)의 타측 단에는 램프1(11)의 LO전극(13B)에 대응하는 LO단 커넥터(16B)와 램프2(12)의 HI전극(13A)에 대응하는 HI단 커넥터(16A)를 각각 마련하여 될 수 있다. That is, one end electrode of the lamp 1 11 is the HI electrode 13A, and one end electrode of the lamp 2 12 located in the direction of the HI electrode 13A of the lamp 1 11 is the LO electrode 13B. One end of the printed circuit board 14 has an HI terminal connector 16A corresponding to the HI electrode 13A of the lamp 1 11 and an LO terminal connector corresponding to the LO electrode 13B of the lamp 2 12 ( 16B), and the other end electrode of the lamp 1 11 is the LO electrode 13B, and the one end electrode of the lamp 2 12 located in the direction of the LO electrode 13B of the lamp 1 11 is the HI electrode. 13A, the other end of the printed circuit board 14 corresponds to the LO terminal connector 16B corresponding to the LO electrode 13B of the lamp 1 11 and the HI electrode 13A of the lamp 2 12. HI stage connectors 16A may be provided respectively.

이와 같이 하면, 인쇄회로기판(14)과 램프1ㆍ2(11)(12)의 전선(W) 연결 경로를 최단거리로 할 수 있으며, 전선(W)의 처리가 깔끔하게 이루어져, 램프 제어 및 램프 구동 시, 전기적인 간섭을 받지 않게 되며, 제품의 조립 및 수리 보수가 용이하게 이루어진다. In this way, the connection path of the wires W between the printed circuit board 14 and the lamps 1, 2 (11) and 12 can be made the shortest distance, and the wires W are neatly processed, thereby controlling the lamps and the lamps. During operation, it is not subject to electrical interference, and product assembly and repair are easily performed.

이상, 본 발명을 본 발명의 원리를 예시하기 위한 바람직한 실시예와 관련하여 설명하고 도시하였지만, 본 발명은 그와 같이 도시되고 설명된 그대로의 구성 및 작용으로 한정되는 것이 아니다. While the invention has been described and illustrated in connection with a preferred embodiment for illustrating the principles of the invention, the invention is not limited to the configuration and operation as such is shown and described.

오히려, 첨부된 청구범위의 사상 및 범주를 일탈함이 없이 본 발명에 대한 다수의 변경 및 수정이 가능함을 당업자들은 잘 이해할 수 있을 것이다. Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims.

따라서, 그러한 모든 적절한 변경 및 수정과 균등물들도 본 발명의 범위에 속하는 것으로 간주되어야 할 것이다. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

본 발명은 인쇄회로기판과 램프 전극과의 전선 연결 경로를 최단거리로 함으로써, 램프 제어 및 램프 구동 시, 전기적인 간섭을 받지 않게 되어 특성 향상 효과가 있다. 또한, 전선의 처리가 깔끔하게 이루어져 제품의 조립 및 수리 보수에 따른 작업성을 향상시키는 효과가 있다. According to the present invention, the electric wire connection path between the printed circuit board and the lamp electrode is the shortest distance, thereby preventing the electric interference during the lamp control and the lamp driving, thereby improving the characteristics. In addition, the processing of the wire is neat and there is an effect of improving the workability according to the assembly and repair of the product.

Claims (5)

대면적 LCD에 백라이트로 이용되는 다중 램프의 설치 구조에 있어서, In the installation structure of multiple lamps used as a backlight for a large area LCD, 램프1ㆍ2의 전극과 인쇄회로기판과의 전선 연결 경로가 최단거리에서 이루어지도록, 램프1ㆍ2를 LCD패널의 장축 또는 단축 방향의 일측 라인(EDGE)에 평행하게 설치하되, The lamps 1 and 2 are installed in parallel with one side line (EDGE) in the long axis or short axis direction of the LCD panel so that the wire connection path between the electrodes of the lamps 1 and 2 and the printed circuit board is made at the shortest distance. 상기 램프1ㆍ2 각각의 전극과 전선 연결되는 커넥터가 양단에 각각 마련된 인버터회로가 설계된 인쇄회로기판을 상기 램프1ㆍ2와 평행하게 설치하여 구성된 대면적 LCD 백라이팅 램프의 설치구조.A mounting structure of a large area LCD backlighting lamp comprising a printed circuit board in which an inverter circuit having connectors connected to wires of each of the lamps 1 and 2 is respectively provided in parallel with the lamps 1 and 2. 제 1항에 있어서, 상기 램프1ㆍ2의 전극은 HI전극과 LO전극으로 나뉘며, 인버터회로의 커넥터는 트랜스포머에서 승압된 신호를 출력하는 커넥터를 HI단 커넥터로, 램프의 동작 상태를 센싱하는 Isense부의 커넥터를 LO단 커넥터로 구분하여 구성된 것을 특징으로 하는 대면적 LCD 백라이팅 램프의 설치구조.The electrode of claim 1, wherein the electrodes of the lamps 1 and 2 are divided into HI electrodes and LO electrodes. The connector of the inverter circuit is a connector for outputting a boosted signal from a transformer as an HI terminal connector, and isense for sensing an operation state of a lamp. Installation structure of large area LCD backlighting lamp, characterized in that the negative connector is divided into the LO terminal connector. 제 1항 및 2항에 있어서, 상기 인쇄회로기판에 설계된 인버터회로는 인버터 구동IC로부터 PWM 신호가 입력되면, 드라이버IC HI/LO신호를 출력하고, FET를 포함한 스위칭부가 상기 HI/LO신호를 구동 신호로 하여 램프 제어 신호를 출력하며, 상 기 램프 제어 신호가 트랜스포머를 통해 승압 출력되어, 상기 HI단 커넥터를 통해 램프1ㆍ2 각각의 HI전극으로 전달되며, 상기 LO단 커넥터와 연결된 Isense부가 램프1ㆍ2의 동작 신호를 구동IC로 피드백 시키도록 설계 구성된 것을 특징으로 하는 대면적 LCD 백라이팅 램프의 설치구조.The inverter circuit of claim 1, wherein the inverter circuit designed on the printed circuit board outputs a driver IC HI / LO signal when a PWM signal is input from the inverter driving IC, and a switching unit including a FET drives the HI / LO signal. The lamp control signal is output as a signal, and the lamp control signal is boosted and output through a transformer, and the lamp control signal is transferred to each HI electrode of the lamps 1 and 2 through the HI terminal connector, and an isense unit connected to the LO terminal connector is connected to the lamp. A large area LCD backlighting lamp mounting structure, which is designed to feed back one or two operation signals to a driving IC. 제 1항 및 2항에 있어서, 상기 램프1ㆍ2의 일측 단 전극은 HI전극으로, 타측 단의 전극은 LO전극으로 일치시키고, 램프1ㆍ2의 HI전극 방향에 위치하는 인쇄회로기판 단부에 HI단 커넥터를, 램프1ㆍ2의 LO전극 방향에 위치하는 인쇄회로기판 단부에 HI단 커넥터를 위치시켜서 구성된 것을 특징으로 하는 대면적 LCD 백라이팅 램프의 설치구조.3. The printed circuit board of claim 1 or 2, wherein one end electrode of the lamps 1 and 2 corresponds to the HI electrode, and the other end electrode is matched to the LO electrode, and the end of the printed circuit board is positioned in the direction of the HI electrode of the lamps 1 and 2. A HI area connector is constructed by placing the HI end connector at an end of a printed circuit board positioned in the direction of the LO electrode of the lamps 1 and 2. 제 1항 및 제 2항에 있어서, 상기 LCD패널의 장축 일측단에 평행하게 설치되는 램프1ㆍ2와 역시 평행하게 인버터회로가 설계된 인쇄회로기판을 설치하되, 램프1 양단의 전극과 램프2 양단의 전극을 상호 반대로 배치하고, 인쇄회로기판 양단 각각의 커넥터 역시, 상호 반대로 배치시켜서 구성된 것을 특징으로 하는 대면적 LCD 백라이팅 램프의 설치구조.According to claim 1 and 2, wherein the printed circuit board is also designed to be parallel to the lamp 1, 2 is installed in parallel to one end of the long axis of the LCD panel, the electrode circuit at both ends of the lamp 1 and the lamp 2 is provided. The electrode structure of the large area LCD backlighting lamp, characterized in that the electrodes are arranged opposite to each other, and the connectors of both ends of the printed circuit board are also arranged opposite to each other.
KR1020060129998A 2006-12-19 2006-12-19 Integrating feedback control type back lighting inverter circuit of multi channel lamp KR20080056875A (en)

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