KR100362988B1 - Multi-string Electrode-type Flat Panel Fluorescent Lamp - Google Patents
Multi-string Electrode-type Flat Panel Fluorescent Lamp Download PDFInfo
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- KR100362988B1 KR100362988B1 KR1020000012924A KR20000012924A KR100362988B1 KR 100362988 B1 KR100362988 B1 KR 100362988B1 KR 1020000012924 A KR1020000012924 A KR 1020000012924A KR 20000012924 A KR20000012924 A KR 20000012924A KR 100362988 B1 KR100362988 B1 KR 100362988B1
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/0075—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources
- F21V19/008—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources of straight tubular light sources, e.g. straight fluorescent tubes, soffit lamps
- F21V19/009—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources of straight tubular light sources, e.g. straight fluorescent tubes, soffit lamps the support means engaging the vessel of the source
-
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/305—Flat vessels or containers
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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)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
Abstract
본 발명은 액정 디스플레이(LCD; Liquid Crystal Display) 장치에 사용되는 소위 LCD 백라이터를 위한 평판 형광 램프에 관한 것으로서, 종래의 백라이터는 LCD의 대면적화에 따른 고휘도와 고효율의 목적에 부적합하다는 문제점을 해결하기 위해 본 발명은 상판과 하판에 각각 형광층을 형성하고 상하판 사이의 공간에 다수의 전선을 설치하여 전선들 간에 방전을 일으켜 형광층을 발광시킴으로써 고효율의 균일한 휘도 분포를 갖는 평판 램프를 구성한다. 또한, 전극의 손상을 방지하기 위하여 전선을 유전체로 피복하고 그 위에 이차전자의 방출율을 높이기 위하여 보호막을 피복한다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat fluorescent lamp for a so-called LCD backlight writer used in a liquid crystal display (LCD) device, and a conventional backlight writer is inadequate for the purpose of high brightness and high efficiency due to the large area of LCD. In order to solve the present invention, a fluorescent lamp is formed on each of the upper and lower plates, and a plurality of electric wires are installed in the space between the upper and lower plates to generate a discharge between the electric wires, thereby emitting a fluorescent layer. Configure. In addition, a wire is covered with a dielectric to prevent damage to the electrode, and a protective film is coated thereon to increase the emission rate of secondary electrons thereon.
Description
본 발명은 액정 디스플레이(LCD; Liquid Crystal Display) 장치에 사용되는 소위 LCD 백라이터를 위한 평판 형광 램프에 관한 것이다.종래의 LCD용 백라이터는 주로 실린더형 램프를 적당히 배치하여 평판 광원으로 사용하는데, 이러한 종래의 LCD용 백라이터는 고휘도와 고효율을 필요로 하는 대면적 LCD에는 부적합하여 최근에는 전극을 평면에 직접 배치한 평판 형광 램프의 형태를 개발하여 LCD용 백라이터로 사용하기 위한 노력이 시도되고 있다.그러나, 이러한 평판 형광 램프는 하판에 설치된 전극들간의 방전에 의하여 자외선이 발생되고 발생된 자외선이 상판의 형광층을 발광시키는 구조로 되어 있으므로, 전극이 배치된 면에는 형광층을 형성할 수 없기 때문에 형광층의 발광면이 줄어들어 고휘도의 LCD용 백라이터에는 부적합하다.또한, 종래의 평판 형광 램프는 전극 사이의 강한 전기장의 영역이 유전층에 묻혀서 전력 소비가 커 비효율적일 뿐만 아니라, 빛이 형광층을 투과하는 방식이므로 근원적으로 휘도가 낮다.더욱이, LCD 패널이 대형화되고 모니터와 TV용으로 사용되기 위하여는 5000 cd/㎡ 이상의 고휘도를 가진 평판 광원이 요구되는데, 실질적으로 실린더형 램프를 사용하거나 또는 전극을 도포하는 방식에 의한 면광원으로는 고휘도의 달성이 어렵다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a flat fluorescent lamp for a so-called LCD backlighter used in a liquid crystal display (LCD) device. [0002] Conventional LCD backlighters mainly use cylindrical lamps as appropriate to use as flat light sources. Such conventional LCD backlighters are inadequate for large area LCDs requiring high brightness and high efficiency. Recently, efforts have been made to develop flat fluorescent lamps in which electrodes are directly placed on a flat surface and used as LCD backlighters. However, such a flat fluorescent lamp has a structure in which ultraviolet rays are generated by the discharge between the electrodes provided on the lower plate, and the generated ultraviolet light emits the fluorescent layer on the upper plate, so that a fluorescent layer can be formed on the surface where the electrodes are disposed. Since the light emitting surface of the fluorescent layer is reduced, it is not suitable for a high brightness LCD backlight. In addition to the high power consumption due to the strong electric field between the electrodes buried in the dielectric layer, the light source is inherently low in brightness due to the way light penetrates the fluorescent layer. Moreover, the LCD panel is enlarged and used for monitors and TVs. In order to achieve this, a flat light source having a high brightness of 5000 cd / m 2 or more is required, and it is difficult to achieve high brightness with a surface light source by using a cylindrical lamp or by applying an electrode.
본 발명의 목적은 전극을 방전 공간에 설치하여 상하판의 형광층을 발광시킴으써 조명장치나 LCD 백라이터의 평판 광원으로 사용할 수 있는 고휘도의 평판 램프를 구현하는 것이다.An object of the present invention is to implement a high-brightness flat lamp that can be used as a flat light source of an illumination device or an LCD backlight by illuminating the fluorescent layer of the upper and lower plates by installing the electrode in the discharge space.
도 1은 다중 전선형 평판 형광 램프의 개념도.1 is a conceptual diagram of a multi-wire flat panel fluorescent lamp.
도 2는 다중 전선형 평판 형광 램프에 사용하는 전선의 개념도.2 is a conceptual diagram of wires used in a multi-wire flat panel fluorescent lamp.
*도면의 주요 부분에 대한 부호의 간단한 설명** Brief description of symbols for the main parts of the drawings *
1; 상판 2; 하판3, 4; 형광층 5; 전선고정대6; 전선 7; 도체8; 유전층 9; 보호막One; Top 2; Lower plate 3, 4; Fluorescent layer 5; Wire bracket 6; Wire 7; Conductor 8; Dielectric layer 9; Shield
본 발명에 따른 대화면용 LCD 장치의 LCD 백라이터는 상판과 하판의 전면에 형광층을 형성하고 상하판 사이의 공간에 다수의 전선을 배치하여 전극간의 방전에 의하여 상하판의 형광층을 발광시킴으로써 고휘도를 갖도록 한다.The LCD backlight of the large-screen LCD device according to the present invention forms a fluorescent layer on the front of the upper plate and the lower plate and arranges a plurality of wires in the space between the upper and lower plates, thereby emitting a fluorescent layer of the upper and lower plates by discharge between the electrodes. To have.
도 1은 다중 전선형 평판 형광 램프의 개념도이다.상판(1)과 하판(2)의 전면에 각각 형광층(3, 4)을 형성하고, 전선고정대(5)에 다수의 전선들(6)을 고정 설치한 다음, 전선고정대(5)를 하판(2)에 부착하여 다수의 전선들(6)이 상판(1)과 하판(2) 사이의 공간에 위치되도록 한다.상기 전선고정대(5)에 고정된 전선들(6) 중 짝수번 전극(X)과 홀수번 전극(Y)은 상기 전선고정대(5)의 외곽에서 서로 연결되고, 상기 짝수번 전극(X)과 홀수번 전극(Y)에 교류형 전원을 연결하여 전선들(6) 간에 방전이 되도록 한다.또한, 상기 상판(1)과 하판(2) 사이의 공간에는 플라즈마를 발생시키기 위한 기체가 주입되는데, 상기 기체는 수은, 제논(Xe) 등의 혼합 가스인 것이 바람직하며, 상기 전선들(6)의 굵기 및 짝수번 전극(X)과 홀수번 전극(Y)들 사이의 간격은 기체의 압력에 따라 정해진다.상기 전극(6)간의 방전에 의하여 상기 상판(1)과 하판(2) 사이의 공간에는 플라즈마가 발생되며, 발생된 플라즈마가 상판(1) 및 하판(2)의 형광층(3, 4)을 발광시킨다.FIG. 1 is a conceptual diagram of a multi-wire flat fluorescent lamp. A fluorescent layer 3, 4 is formed on the front surface of the upper plate 1 and the lower plate 2, respectively, and the plurality of wires 6 are placed on the wire fixing stand 5. After the fixed installation, the wire holder 5 is attached to the lower plate 2 so that the plurality of wires 6 are positioned in the space between the upper plate 1 and the lower plate 2. The even-numbered electrode X and the odd-numbered electrode Y of the wires 6 fixed to each other are connected to each other outside the wire fixing stand 5, and the even-numbered electrode X and the odd-numbered electrode Y are connected to each other. An AC power source is connected to the electric power source to discharge the electric wires 6. A gas for generating plasma is injected into the space between the upper plate 1 and the lower plate 2, and the gas is mercury or xenon. Preferably, it is a mixed gas such as Xe, and the thickness of the wires 6 and the interval between even-numbered electrodes X and odd-numbered electrodes Y are determined according to the pressure of the gas. C. Plasma is generated in the space between the upper plate 1 and the lower plate 2 by the discharge between the electrodes 6, and the generated plasma is the fluorescent layers 3 and 4 of the upper plate 1 and the lower plate 2. ) To emit light.
도 2는 다중 전선형 평판 형광 램프에 사용하는 전선의 개념도로서, 전극의 손상을 방지하기 위하여 상기 전선(6)을 유전층(8)으로 피복한 다음 이차전자의 방출율을 높이기 위하여 MgO 등으로 이루어진 보호막(9)을 추가로 피복한다.2 is a conceptual diagram of a wire used in a multi-wire flat fluorescent lamp, in which a protective film made of MgO or the like is coated to cover the wire 6 with a dielectric layer 8 to prevent damage to an electrode, and then increase emission rate of secondary electrons. Further coat (9).
또한, LCD용 백라이터로 사용하기 위하여 하판에 반사판을 부착하거나 상판에 확산판 등을 추가로 부착할 수도 있다.In addition, a reflective plate may be attached to the lower plate or a diffuser plate may be further attached to the upper plate for use as an LCD backlight.
브라운관을 대신하는 표시장치로서 LCD의 용도가 넓어지고 있다. 노트북 PC에서 테스크탑 모니터 및 액정TV의 영역으로 확대되고 있는 추세이다. 따라서 백라이터의 크기도 10 인치급에서 20 인치 이상의 대화면용으로 그 수요가 증대되고 있다. 동시에 고휘도와 고효율을 요구하고 있다. 이러한 관점에서 본 발명에서 제안된 백라이터의 방식은 기존의 개별 실린더형 형광램프의 고휘도와 고효율의 특성을 갖는다. 따라서, 백라이터의 휘도가 대화면의 LCD에 제한적인 요소가 되지 않으므로 LCD의 기술 증진과 시장 확대에 큰 변화를 가져올 것이다.The use of LCDs as display devices replacing CRTs is being expanded. The trend is expanding from notebook PCs to desktop monitors and LCD TVs. Therefore, the size of the backlight is also increasing in demand for large screens of 10 inches to 20 inches or more. At the same time, high brightness and high efficiency are required. In this respect, the proposed backlight writer has the characteristics of high brightness and high efficiency of existing individual cylindrical fluorescent lamps. Therefore, since the brightness of the backlight is not a limiting factor for the LCD of the large screen, it will bring a great change in the technology promotion and market expansion of the LCD.
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020000012924A KR100362988B1 (en) | 2000-03-14 | 2000-03-14 | Multi-string Electrode-type Flat Panel Fluorescent Lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020000012924A KR100362988B1 (en) | 2000-03-14 | 2000-03-14 | Multi-string Electrode-type Flat Panel Fluorescent Lamp |
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| Publication Number | Publication Date |
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| KR20000030745A KR20000030745A (en) | 2000-06-05 |
| KR100362988B1 true KR100362988B1 (en) | 2002-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1020000012924A KR100362988B1 (en) | 2000-03-14 | 2000-03-14 | Multi-string Electrode-type Flat Panel Fluorescent Lamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100354520B1 (en) * | 2000-11-24 | 2002-09-28 | 주식회사 광운디스플레이기술 | Driving method for the backlight employing the external electrode fluorescent lamps |
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