KR100362989B1 - Flat Panel Fluorescent Lamp - Google Patents
Flat Panel Fluorescent Lamp Download PDFInfo
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- KR100362989B1 KR100362989B1 KR1020000022996A KR20000022996A KR100362989B1 KR 100362989 B1 KR100362989 B1 KR 100362989B1 KR 1020000022996 A KR1020000022996 A KR 1020000022996A KR 20000022996 A KR20000022996 A KR 20000022996A KR 100362989 B1 KR100362989 B1 KR 100362989B1
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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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- 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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
- H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
- H01J65/042—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field
- H01J65/046—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field the field being produced by using capacitive means around the vessel
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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)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
본 발명은 액정 디스플레이(LCD; Liquid Crystal Display) 장치에 사용되는 소위 LCD-백라이터이다. 종래의 백라이터가 LCD의 대면적화에 따른 고휘도와 고효율의 목적에 부합하지 못한다는 문제점을 해결하기 위해, 본 발명에서는 유리 성형 방식으로 직접 평판형 램프를 제작한다. 다중의 실린더형태의 개별 방전 공간을 갖도록 유리 성형방식으로 상판과 하판을 별도로 제작하여 상하판을 봉합하는 방식으로 평판형 램프를 제작한다. 상판과 하판에 설치된 반원형 방전공간 내벽에 각각 형광층을 도포하고 양쪽 끝에 전극을 설치한다. 결과적으로, 다중의 형광관을 평면상에 배치한 형태를 갖는다.The present invention is a so-called LCD-lighter used in Liquid Crystal Display (LCD) devices. In order to solve the problem that the conventional backlight writer does not meet the purpose of high brightness and high efficiency due to the large area of the LCD, the present invention manufactures a flat lamp directly by the glass molding method. A flat lamp is manufactured by sealing the upper and lower plates by separately manufacturing the upper and lower plates by a glass molding method to have individual discharge spaces in the form of multiple cylinders. The fluorescent layer is applied to the inner wall of the semicircular discharge space installed on the upper plate and the lower plate, and electrodes are installed at both ends. As a result, multiple fluorescent tubes are arranged on a plane.
Description
본 발명은 액정 디스플레이(Liquid Crystal Display; 이하 LCD라 함) 백라이터용 평판 형광 램프에 관한 것으로서, 특히 평면상에 균일한 휘도를 갖고 종래의 다수의 원통형 형광 램프가 평면상에 배열된 것과 같은 형태로서 평판 유리를 유리성형 방식으로 제조한 고휘도와 고효율의 LCD 백라이터용 평판 형광 램프에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to flat fluorescent lamps for liquid crystal displays (hereinafter referred to as LCD) backlights, in particular having a uniform brightness on a flat surface and having the shape of a plurality of conventional cylindrical fluorescent lamps arranged on the flat The present invention relates to a flat fluorescent lamp for LCD backlighter having high brightness and high efficiency, which is manufactured by glass molding method.
종래의 LCD의 광원으로 사용되는 소위 LCD-백라이터는 원통형 형광 램프를 배치하는 방식으로서 직하형 방식과 도광판 방식이 있다. 직하형은 평면에 형광램프를 배치한다. 직하형은 형광램프의 형상이 액정패널에 나타나므로 램프와 액정패널 사이의 간격을 상당히 유지해야 한다. 따라서, 직하형은 박형화에 한계가 있으며, 패널 전체 광도의 균일도에 문제가 있다. 도광판 방식은 평판 외곽에 형광램프를 설치하여 도광판을 이용하여 전체의 면으로 빛을 분산한다. 형광램프가 측면에 설치되고 빛이 도광판을 통하므로 근본적으로 휘도가 낮다. 또한 균일한 광도의 분포를 위하여 도광판에 대한 고도의 광학적 설계기술과 가공기술이 요구된다. 그러나 LCD의 패널이 대화면화되고 모니터와 TV 용으로 사용되기 위하여는 5000 cd/㎡ 이상의 고휘도가 요구된다. 이러한 경우 종래의 도광판 방식과 같이 측면에 형광 램프를 배치하는 방식(side-light)으로는 고휘도의 달성이 어렵고 LCD패널의 대형화에 따라서 고휘도의 요구에 맞도록 램프 전류가 커져야 한다는 단점을 가진다.또한, 최근에 개발되고 있는 LCD용 평판형 램프는 상판과 하판의 유리판 위에 형광층과 전극을 설치하는 방식이 소개되고 있다. 이들의 구조에서는 상하판 사이의 공간에 별도의 지지 기둥을 설치하여야 하므로 휘도의 균일도를 유지하기 어렵고 전체의 방전 공간에 균일하게 플라즈마를 발생시키기도 어렵다. 그러나 본 발명은 별도의지지 기둥이 필요하지 않으며 개별 공간에 균일하게 방전을 유지하여 종래의 원통형 형광관이 갖는 최대의 효율을 그대로 유지하는 방식이다.The so-called LCD backlighter used as a light source of a conventional LCD has a direct type type and a light guide plate type as a method of disposing a cylindrical fluorescent lamp. The direct type places the fluorescent lamp in the plane. In the direct type, since the shape of the fluorescent lamp appears on the liquid crystal panel, the gap between the lamp and the liquid crystal panel should be kept considerably. Therefore, the direct type has a limitation in thinning, and there is a problem in the uniformity of the overall brightness of the panel. In the LGP method, a fluorescent lamp is installed outside the flat plate to distribute light to the entire surface using the LGP. Fluorescent lamps are installed on the side and light passes through the light guide plate, so the brightness is fundamentally low. In addition, high optical design and processing technology for the light guide plate is required for uniform light distribution. However, high brightness of more than 5000 cd / m2 is required for LCD panels to be large screens and to be used for monitors and TVs. In this case, it is difficult to achieve high brightness by side-lighting a fluorescent lamp on the side as in the conventional light guide plate method and has a disadvantage that the lamp current must be increased to meet the demand of high brightness as the LCD panel is enlarged. In recent years, the flat panel lamp for LCD has been introduced to install a fluorescent layer and an electrode on the glass plate of the upper plate and the lower plate. In these structures, it is difficult to maintain uniformity of luminance and to generate plasma uniformly in the entire discharge space because a separate support pillar must be provided in the space between the upper and lower plates. However, the present invention does not require a separate support pillar and maintains the discharge uniformly in individual spaces to maintain the maximum efficiency of the conventional cylindrical fluorescent tube.
본 발명의 목적은 제조가 용이하고 고휘도와 고효율을 갖는 평판형 형광램프를 제공하는 것이다.본 발명에 따른 평판형 형광램프는 다수의 형광램프를 평면상에 직접 설치하는 방식으로서, 종래의 실린더형과 같은 다수의 형광램프가 평면상에 배치된 형태로 유리 성형 방식으로 다중의 발광 공간을 직접 평판에 제작하는 것이다.SUMMARY OF THE INVENTION An object of the present invention is to provide a flat fluorescent lamp that is easy to manufacture and has high brightness and high efficiency. The flat fluorescent lamp according to the present invention is a method of directly installing a plurality of fluorescent lamps on a flat surface. In the form of a plurality of fluorescent lamps such as is arranged on a plane is to produce a plurality of light emitting space directly on the flat plate by the glass molding method.
도 1은 유리 성형 방식으로 제작된 평판형 형광 램프의 분리된 상판과 하판의 개념도이다.1 is a conceptual diagram of a separated top and bottom plate of a flat fluorescent lamp manufactured by a glass molding method.
도 2는 유전층이 도포된 전극이 설치된 평판형 형광 램프의 하판의 개념도이다.2 is a conceptual diagram of a lower plate of a flat fluorescent lamp provided with an electrode coated with a dielectric layer.
※ 도면의 주요부분에 대한 부호의 설명 ※※ Explanation of code about main part of drawing ※
1; 상판 2; 하판3, 4; 형광층 5; 반원형 방전공간6; 유리 격벽 7; 기체 통로8, 9; 실린더형 전극 10; 도선11; 전원 공급선One; Top 2; Lower plate 3, 4; Fluorescent layer 5; Semicircular discharge space 6; Glass bulkhead 7; Gas passages 8 and 9; Cylindrical electrode 10; Wire 11; Power supply line
본 발명에 따른 평판 형광램프는 반원형 방전공간과, 상기 방전공간 사이의 유리 격벽과, 상기 유리 격벽에 도포되는 형광층을 각각 구비하는 상판; 제2 반원형 방전공간과, 상기 제2 방전공간 사이의 제2 유리 격벽과, 상기 제2 유리 격벽에 도포되는 형광층과, 방전 공간이 균일한 기체의 압력을 갖도록 상기 제2 유리 격벽 양단에 형성되는 기체통로를 포함하는 하판; 및 상기 반원형 방전공간 사이에 삽입되는 실린더형 전극을 포함하며, 상기 상판과 하판은 유리 성형 방식으로 개별제조되고 상기 상판과 하판의 접합시 원형의 방전 공간이 각각 형성되는 것을 특징으로 한다.According to the present invention, a flat fluorescent lamp includes: a top plate each having a semicircular discharge space, a glass partition wall between the discharge spaces, and a fluorescent layer applied to the glass partition wall; A second semicircular discharge space, a second glass partition wall between the second discharge space, a fluorescent layer applied to the second glass partition wall, and formed at both ends of the second glass partition wall such that the discharge space has a uniform gas pressure. A lower plate including a gas passage; And a cylindrical electrode inserted between the semi-circular discharge spaces, wherein the upper plate and the lower plate are individually manufactured in a glass forming method, and circular discharge spaces are formed when the upper plate and the lower plate are joined.
도 1은 본 발명의 일실시예에 따른 유리 성형 방식으로 제작된 평판형 램프이다. 상판(1)과 하판(2)에 각각 반원형의 방전 공간(5)을 설치하고 상기 상하판(1, 2)을 부착하여 평판 램프를 만든다. 상기 개별 방전 공간들(5) 사이의 유리 격벽(6)은 상하판 사이의 지지기둥 역할을 한다. 결과적으로 원통형의 다중 램프가 평판에 설치된 형태를 갖는다. 이때, 휘도의 균일도를 위하여 유리 격벽(6)의 폭은 되도록 좁게 한다. 특히, 방전 공간이 균일한 기체의 압력을 갖도록 하판의 유리 격벽(6)에는 기체통로(7)를 설치한다. 종래의 형광관과 마찬가지로 상하판에 각각 형광층(3, 4)을 도포한다. 상기 하판의 형광층(4)의 두께는 충분하게 하여 빛의 투과를 고려하지 않아도 무방하다. 또한, 실린더형 전극(8)이 상기 상판(1)과 하판(2)의 방전공간(5) 사이에 설치된다. 상기 전극의 형태는 종래의 방식인 냉음극형이나 열음극형 등 램프의 휘도와 효율을 감안하여 설치한다. 다만, 방전 공간에 금속 전극이 노출된 직류형 방전의 경우는 음극 강하로 인하여 병렬 연결 방식으로 전원에 연결할 수 없기 때문에 개별적으로 전원에 연결하여 구동된다.1 is a flat lamp manufactured by the glass molding method according to an embodiment of the present invention. A semicircular discharge space 5 is provided on the upper plate 1 and the lower plate 2, respectively, and the upper and lower plates 1 and 2 are attached to each other to form a flat lamp. The glass partition 6 between the individual discharge spaces 5 serves as a support pillar between the upper and lower plates. As a result, a cylindrical multiple lamp has a shape installed on the plate. At this time, the width of the glass partition 6 is as narrow as possible for uniformity of brightness. In particular, a gas passage 7 is provided in the glass partition 6 of the lower plate so that the discharge space has a uniform gas pressure. As in the conventional fluorescent tube, fluorescent layers 3 and 4 are applied to the upper and lower plates, respectively. The thickness of the fluorescent layer 4 of the lower plate may be sufficient, and light transmission may not be considered. In addition, a cylindrical electrode 8 is provided between the discharge space 5 of the upper plate 1 and the lower plate 2. The electrode is formed in consideration of the brightness and efficiency of a lamp such as a cold cathode type or a hot cathode type which are conventional methods. However, in the case of the direct current discharge in which the metal electrode is exposed in the discharge space, the direct current can be connected to the power source in parallel because of the negative drop, so that the discharge is driven separately.
도 2는 본 발명의 다른 실시예에 따른 평판 램프의 사시도로서, 실린더형 전극(9)이 단일 전원에 병렬 연결 방식으로 연결되는 평판 램프의 하판 구조이다. 유전층이 도포된 실린더형의 전극들(9)은 서로 도선(10)에 의해 연결되어 하나의 전원연결선(11)에 의하여 전압이 인가된다.본 발명에서의 전극의 형태는 2가지 방식을 선택적으로 채용할 수 있다. 종래의 형광관과 같이 냉음극형이나 열음극형으로서, 방전공간에 전극이 노출되는 DC형 전극과 금속재의 전극에 유전층을 도포한 AC형 방전을 위한 전극형태를 채용할 수 있다.2 is a perspective view of a flat lamp according to another embodiment of the present invention, in which the cylindrical electrode 9 is a lower plate structure of a flat lamp to which a single power source is connected in parallel. The cylindrical electrodes 9 coated with the dielectric layer are connected to each other by a conductive wire 10 so that a voltage is applied by one power supply line 11. The shape of the electrode in the present invention may be selectively used in two ways. It can be adopted. As in the conventional fluorescent tube, as the cold cathode type or the hot cathode type, a DC type electrode in which the electrode is exposed to the discharge space and an electrode type for AC type discharge in which a dielectric layer is applied to the electrode of the metal material can be adopted.
본 발명에서는 상판과 하판을 별로로 성형한 후 상하판을 접합하는데, 접합방식은 여러 가지를 채용할 수 있다. 유리 접합용 봉합재를 바르고 열처리하는 방식이 있다. 또는 상판과 하판의 가장자리를 늘려서 직접 열을 가하여 가장자리의 유리를 서로 녹여서 접합한다. 그 외에도 정전 접합 방식이 있다.In the present invention, after forming the upper plate and the lower plate into stars, the upper and lower plates are joined, and various joining methods may be employed. There is a method of applying a glass bonding suture and heat treatment. Alternatively, the edges of the top and bottom plates are stretched to apply heat directly, and the edges of the glass are melted and bonded together. In addition, there is an electrostatic bonding method.
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 형광램프의 최고의 휘도와 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 the highest brightness and high efficiency of existing individual 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 big change in the LCD technology enhancement and market expansion.
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| KR1020000022996A KR100362989B1 (en) | 2000-04-28 | 2000-04-28 | Flat Panel Fluorescent Lamp |
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| KR100362989B1 true KR100362989B1 (en) | 2002-11-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100390454B1 (en) * | 2000-09-25 | 2003-07-04 | 엘지.필립스 엘시디 주식회사 | Planar type fluorescent lamp |
| KR100444293B1 (en) * | 2000-10-30 | 2004-08-11 | 주식회사 엘에스텍 | Back ligt |
| KR100399006B1 (en) * | 2001-02-20 | 2003-09-22 | 주식회사 광운디스플레이기술 | The hybrid discharge-type flat fluorescent lamp |
| KR20010079377A (en) * | 2001-07-10 | 2001-08-22 | 최태현 | Flat type fluorescent lamp and method for manufacturing the same |
| KR20030017007A (en) * | 2001-08-23 | 2003-03-03 | 한국 기술교류 주식회사 | Method for simultaneously anastomosing upper and bottom plates of discharge tube of plane lumination apparatus and apparatus thereof |
| KR100846627B1 (en) * | 2001-08-29 | 2008-07-16 | 삼성전자주식회사 | Liquid crystal display device |
| KR20030046578A (en) * | 2001-12-05 | 2003-06-18 | 주식회사뉴런네트 | Conductive rubber socket for eefl |
| KR100769183B1 (en) * | 2001-12-28 | 2007-10-23 | 엘지.필립스 엘시디 주식회사 | Flat Luminescene Lamp |
| TW594830B (en) * | 2003-04-02 | 2004-06-21 | Delta Optoelectronics Inc | Cold cathode fluorescent flat lamp |
| KR100596340B1 (en) * | 2004-06-01 | 2006-07-06 | 주식회사 에이디피엔지니어링 | Flat back light and Method for manufacturing flat back light |
| KR100637526B1 (en) | 2004-10-07 | 2006-10-23 | 삼성에스디아이 주식회사 | A flat fluorescent lamp and a liquid crystal display device |
| KR100660279B1 (en) * | 2005-05-11 | 2006-12-20 | 삼성코닝 주식회사 | Flat fluorescent lamp and back light unit having the same |
| KR100795312B1 (en) * | 2006-01-19 | 2008-01-15 | 엘지.필립스 엘시디 주식회사 | Flat Panel Fluorescent Lamp Discharging Across the Barrier Rib |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5708324A (en) * | 1996-03-18 | 1998-01-13 | Matsushita Research And Development Laboratory Inc. | Fluorescent lamp with different density phosphor coatings on the front panel and internal channels |
| KR20000005671A (en) * | 1998-06-09 | 2000-01-25 | 이광주 | Flat fluorescent lamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5708324A (en) * | 1996-03-18 | 1998-01-13 | Matsushita Research And Development Laboratory Inc. | Fluorescent lamp with different density phosphor coatings on the front panel and internal channels |
| KR20000005671A (en) * | 1998-06-09 | 2000-01-25 | 이광주 | Flat fluorescent lamp |
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