KR20040013263A - Cold cathode fluorescent lamp - Google Patents

Cold cathode fluorescent lamp Download PDF

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Publication number
KR20040013263A
KR20040013263A KR1020020046115A KR20020046115A KR20040013263A KR 20040013263 A KR20040013263 A KR 20040013263A KR 1020020046115 A KR1020020046115 A KR 1020020046115A KR 20020046115 A KR20020046115 A KR 20020046115A KR 20040013263 A KR20040013263 A KR 20040013263A
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KR
South Korea
Prior art keywords
glass tube
electrode
cathode fluorescent
lead wire
fluorescent lamp
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KR1020020046115A
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Korean (ko)
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곽봉주
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(주)썬테크
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Priority to KR1020020046115A priority Critical patent/KR20040013263A/en
Publication of KR20040013263A publication Critical patent/KR20040013263A/en

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/04Electrodes; Screens; Shields
    • H01J61/06Main electrodes
    • H01J61/067Main electrodes for low-pressure discharge lamps
    • H01J61/0672Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/12Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/125Selection of substances for gas fillings; Specified operating pressure or temperature having an halogenide as principal component
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/36Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
    • H01J61/366Seals for leading-in conductors

Abstract

PURPOSE: A cold cathode fluorescent lamp is provided to improve the brightness of a lamp by increasing an amount of electron emission of a cold cathode fluorescent lamp. CONSTITUTION: A cold cathode fluorescent lamp comprises a glass tube(10), an encapsulation part(12), a lead wire(14), an electrode(16), and a stem(18). A mixing gas such as Hg, Ar, and Ne is filled into the inside of the glass tube and a phosphor material is deposited on the inside of the glass tube. The encapsulation part is mounted on both ends of the glass tube and seals the glass tube. The lead wire is passed through the encapsulation part and extended from the outside of the glass tube to the inside of the glass tube. The electrode is connected to an end of the lead wire at the inside of both ends of the glass tube. The stem covers the lead wire from the encapsulation part to the electrode at the inside of both ends of the glass tube. The electrode is extended from the center of an end connected to the lead wire to the inside wall of the glass tube. An electrode extension part(20) is formed at the inside wall of the glass tube.

Description

냉음극 형광램프{Cold cathode fluorescent lamp}Cold cathode fluorescent lamp

본 발명은 냉음극 형광램프에 관한 것으로서, 보다 상세하게는 냉음극 형광램프의 전자방출량을 증가시켜, 램프의 휘도를 향상시킴은 물론, 이로 인해 수은 감소량을 감소시켜 수명을 연장시킬 수 있도록 된 냉음극 형광램프에 관한 것이다.The present invention relates to a cold cathode fluorescent lamp, and more particularly, to increase the electron emission of the cold cathode fluorescent lamp, thereby improving the brightness of the lamp, thereby reducing the amount of mercury reduction, thereby extending the life A cathode fluorescent lamp.

최근 들어, 휴대폰과 노트북 등의 사용이 늘어나면서, 이러한 휴대폰과 노트북 등의 액정화면 백라이트용으로 사용되는 냉음극 형광램프(Cold Cathode Fluorescent Lamp)의 수요가 급증하고 있다. 이러한 냉음극 형광램프는 우리에게 흔히 알려진 형광램프인 열음극 형광램프(Hot Cathode Fluorescent Lamp)와 거의 동일한 원리로 점등되지만, 열음극 형광램프가 열에 의한 전자방출로 점등되는 반면, 냉음극 형광램프는 전극에 가해지는 전계에 의한 전자방출로서 점등된다는 차이를 보이고 있다.Recently, as the use of mobile phones and laptops increases, the demand for cold cathode fluorescent lamps used for liquid crystal display backlights of such mobile phones and laptops is increasing rapidly. This cold cathode fluorescent lamp is lit on the same principle as the hot cathode fluorescent lamp (Hot Cathode Fluorescent Lamp), which is commonly known to us, while the hot cathode fluorescent lamp is turned on by electron emission by heat, while the cold cathode fluorescent lamp is turned on the electrode. The difference is that the light is turned on as the electron is emitted by the applied electric field.

도 1은 이러한 냉음극 형광램프의 일예를 도시한 것으로서, 그 내부에 수은과 아르곤, 네온 등의 혼합가스가 충전되며 형광물질이 도포된 유리관(10)과, 이 유리관(10) 양단에 장착되어 혼합가스가 외부로 새어나가지 않도록 하는 봉착부(12)와, 이 봉착부(12)를 관통하여 유리관(10) 외부에서 유리관(10) 내부로 연장되는 리드선(14)과, 유리관(10) 양단 내부에서 상기 리드선(14) 단부에 접속되는 전극(16)과, 유리관(10) 양단 내부에서 봉착부(12)에서 전극(16)까지의리드선(14)을 감싸는 스템(18)으로 이루어진다. 이와 같은 냉음극 형광램프는 유리관(10)의 직경이 수 mm에 이를 정도로 매우 가는 것이 특징이며, 상기 리드선(14)을 통해 양 전극(16)에 고압의 전류를 흘려 보내면 양 전극(16)에서 전자가 방출하여 수은을 여기시키고, 수은이 여기되면서 자외선을 발산하며, 유리관(10) 내부의 형광물질이 이 자외선을 가시광선으로 변환시키면서 점등된다. 이때, 냉음극 형광램프의 전극(16)으로는 텅스텐이나 니켈, 알루니마 등이 주로 사용되며, 수은감소량이 낮으면서 단면적을 용이하게 변경시킬 수 있는 니켈이 가장 많이 사용된다. 이러한 전극(16)은 단면적이 커질수록 전자방출량이 증가하여 휘도가 높아짐은 물론, 수은 감소량이 적어져 수명을 연장시키는 요소로 작용됨으로 인하여, 최근에는 도 2에서와 같이, 중공부를 가진 컵 형상의 전극(16)을 구비한 냉음극 형광램프의 개발이 시도되고 있다.FIG. 1 illustrates an example of such a cold cathode fluorescent lamp, and includes a glass tube 10 filled with a mixed gas such as mercury, argon, and neon, and coated with a fluorescent material, and mounted on both ends of the glass tube 10. A sealing portion 12 to prevent the mixed gas from leaking out, a lead wire 14 penetrating through the sealing portion 12 and extending from the outside of the glass tube 10 into the glass tube 10, and both ends of the glass tube 10. It consists of an electrode 16 connected to the end of the lead wire 14 inside, and a stem 18 surrounding the lead wire 14 from the sealing portion 12 to the electrode 16 inside both ends of the glass tube 10. The cold cathode fluorescent lamp is characterized in that the glass tube 10 is very thin so that the diameter of several mm, and when the high-current current flows to the positive electrode 16 through the lead wire 14 in both electrodes 16 Electrons are emitted to excite mercury, emit mercury as mercury is excited, and the fluorescent material inside the glass tube 10 is turned on while converting the ultraviolet rays into visible light. At this time, as the electrode 16 of the cold cathode fluorescent lamp, tungsten, nickel, alumina, etc. are mainly used, and nickel, which can easily change the cross-sectional area with low mercury reduction amount, is used the most. Since the electrode 16 has a larger cross-sectional area, the amount of electron emission increases and luminance increases, and as a result, the amount of mercury decreases, which acts as an element to prolong the life. In recent years, as shown in FIG. Development of cold cathode fluorescent lamps with electrodes 16 has been attempted.

그러나, 상기 도 2에 도시된 바와 같이 컵 형상의 전극(16)을 구비하여도, 이 전극(16)이 비교적 가는 유리관(10) 내벽에서 소정 간격 이격되어 형성되다보니, 증가시킬 수 있는 전극(16)의 단면적에 한계가 있어서, 이로 인한 램프의 휘도 증가 및 수명 연장의 효과는 매우 미약한 문제점이 있다.However, even with the cup-shaped electrode 16 as shown in FIG. 2, since the electrode 16 is formed at a predetermined interval apart from the inner wall of the relatively thin glass tube 10, an electrode which can be increased ( There is a limit to the cross-sectional area of 16), and thus the effect of increasing the brightness and extending the life of the lamp is very weak.

본 발명은 상기의 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 냉음극 형광램프의 전자방출량을 증가시켜, 램프의 휘도를 향상시킴은 물론, 이로 인해 수은 감소량을 감소시켜 수명을 연장시킬 수 있도록 된 냉음극 형광램프를 제공하는 것이다.The present invention is to solve the above problems, an object of the present invention is to increase the electron emission amount of the cold cathode fluorescent lamp, to improve the brightness of the lamp, thereby reducing the amount of mercury reduction can be extended to extend the life It is to provide a cold cathode fluorescent lamp.

도 1은 종래 냉음극 형광램프의 일실시예를 도시한 단면도1 is a cross-sectional view showing an embodiment of a conventional cold cathode fluorescent lamp

도 2는 종래 냉음극 형광래프의 다른 실시예를 도시한 단면도Figure 2 is a cross-sectional view showing another embodiment of a conventional cold cathode fluorescent lamp

도 3은 본 발명에 따른 냉음극 형광램프의 일실시예를 도시한 단면도Figure 3 is a cross-sectional view showing an embodiment of a cold cathode fluorescent lamp according to the present invention

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10. 유리관 12. 봉착부10. Glass tube 12. Sealing part

14. 리드선 16. 전극14. Lead wire 16. Electrode

18. 스템 20. 전극연장부18. Stem 20. Electrode extension

본 발명에 따르면, 그 내부에 수은, 아르곤, 네온 등의 혼합가스가 충전되며 형광물질이 도포된 유리관(10)과, 상기 유리관(10) 양단에 장착되어 혼합가스가 외부로 새어나가지 않도록 하는 봉착부(12)와, 상기 봉착부(12)를 관통하여 유리관(10) 외부에서 유리관(10) 내부로 연장되는 리드선(14)과, 상기 유리관(10) 양단 내부에서 상기 리드선(14) 단부에 접속되는 전극(16)과, 유리관(10) 양단 내부에서 봉착부(12)에서 전극(16)까지의 리드선(14)을 감싸는 스템(18)을 포함하여 구성되는 냉음극 형광램프에 있어서, 상기 전극(16)은 리드선(14)에 연결된 일단을 중심으로 유리관(10) 내벽까지 방사형으로 연장되는 나팔관 형상으로 이루어지고, 상기 유리관(10) 내벽에는 전극(16)의 타단에서 연장되어 소정 폭 니켈 도금처리된 전극연장부(20)가 구비되어 이루어지는 것을 특징으로 하는 냉음극 형광램프가 제공된다.According to the present invention, a glass tube 10 filled with a mixed gas such as mercury, argon, neon, and the like is mounted on both ends of the glass tube 10 and the glass tube 10 to prevent the mixed gas from leaking to the outside. A lead 12 extending from the glass tube 10 to the inside of the glass tube 10 through the portion 12, the sealing portion 12, and the ends of the lead wire 14 in both ends of the glass tube 10; In the cold-cathode fluorescent lamp comprised of the electrode 16 connected and the stem 18 which wraps the lead wire 14 from the sealing part 12 to the electrode 16 inside the both ends of the glass tube 10, The said The electrode 16 has a fallopian tube shape extending radially to the inner wall of the glass tube 10 about one end connected to the lead wire 14. The inner wall of the glass tube 10 extends from the other end of the electrode 16 to have a predetermined width nickel. It is characterized in that the plated electrode extending portion 20 is provided A cold cathode fluorescent lamp is provided.

이하, 본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 설명하면 다음과 같다. 도 3은 본 발명에 따른 냉음극 형광램프의 일실시예를 도시한 것으로서, 이를 참조하면, 상기 냉음극 형광램프는 혼합가스가 충전되고 형광물질이 도포된 유리관(10)과, 이 유리관(10) 양단의 봉착부(12)와, 이 봉착부(12)를 관통하는 리드선(14)과, 이 리드선(14)에 연결되는 전극(16)과, 유리관(10) 내부에서 리드선(14)을 감싸는 스템(18)으로 이루어지는 것은 종래와 동일하다.Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. 3 illustrates an embodiment of a cold cathode fluorescent lamp according to the present invention. Referring to this, the cold cathode fluorescent lamp includes a glass tube 10 filled with a mixed gas and coated with a fluorescent substance, and the glass tube 10. ) The sealing portion 12 at both ends, the lead wire 14 penetrating the sealing portion 12, the electrode 16 connected to the lead wire 14, and the lead wire 14 inside the glass tube 10. What consists of the wrapping stem 18 is the same as before.

이때, 상기 전극(16)은 유리관(10) 내벽까지 이르는 나팔관 형상으로 이루어지며, 상기 유리관(10) 내벽에는 전극(16)에서 연장되어 소정 폭 니켈 도금처리된 전극연장부(20)가 구비되어 이루어진다.At this time, the electrode 16 is made of a fallopian tube shape to the inner wall of the glass tube 10, the inner wall of the glass tube 10 is provided with an electrode extension portion 20 extending from the electrode 16 and a predetermined width nickel plating treatment. Is done.

상기 전극(16)은 도 3의 단면도에서와 같이, 리드선(14)에 연결된 일단을 중심으로 유리관(10) 내벽까지 방사형으로 연장되어 나팔관 형상으로 형성된다. 이와 같이 유리관(10) 내벽까지 이르는 전극(16)은 다시 유리관(10) 내벽에 도금처리된 전극연장부(20)와 연결된다. 상기 전극연장부(20)는 수은감소량이 비교적 적으면서, 단면적을 자유롭게 변화시킬 수 있는 니켈을 유리관(10)의 길이방향으로 소정 폭만큼 유리관(10)의 내벽면에 고르게 도금처리하는 것으로서, 결과적으로 전극(16)의 단면적을 연장시키는 역할을 한다. 따라서, 전극(16)과 전극연장부(20) 전체를 전극으로 볼 수도 있다.As shown in the cross-sectional view of FIG. 3, the electrode 16 extends radially to the inner wall of the glass tube 10 with respect to one end connected to the lead wire 14 to have a fallopian tube shape. As such, the electrode 16 reaching the inner wall of the glass tube 10 is connected to the electrode extension part 20 which is plated on the inner wall of the glass tube 10 again. The electrode extension part 20 is plated on the inner wall surface of the glass tube 10 evenly by a predetermined width in the longitudinal direction of the glass tube 10 with a relatively small amount of mercury reduction and freely varying the cross-sectional area. This serves to extend the cross-sectional area of the electrode 16. Therefore, the whole electrode 16 and the electrode extension part 20 can also be considered as an electrode.

전술한 바와 같이, 본 발명에 따른 냉음극 형광램프는 유리관(10) 내벽에 니켈을 소정 폭 도금처리하는 것만으로도, 기존의 냉음극 형광램프에 비해 전극(16)의 단면적을 증가시킬 수 있게 되어서, 기존의 냉음극 형광램프에 비해 전자방출량을 증가시키게 되어 높은 휘도를 제공할 수 있게 된다. 또한, 이로 인해, 수은감소량을 줄여줌으로써, 램프의 수명을 연장시키는 효과를 갖게 된다.As described above, the cold cathode fluorescent lamp according to the present invention can increase the cross-sectional area of the electrode 16 as compared to the conventional cold cathode fluorescent lamp only by plating a predetermined width of nickel on the inner wall of the glass tube 10. As a result, the amount of electron emission is increased as compared with the conventional cold cathode fluorescent lamp, thereby providing high luminance. In addition, due to this, by reducing the amount of mercury reduction, it has the effect of extending the life of the lamp.

이상에서와 같이 본 발명에 의하면, 유리관 내벽에 니켈을 소정 폭 도금처리하는 것만으로도, 기존의 냉음극 형광램프에 비해 전극의 단면적을 증가시킬 수 있게 되어 높은 휘도를 제공할 수 있으며, 수명을 연장시킬 수 있도록 된 냉음극 형광램프를 제공할 수 있다.As described above, according to the present invention, it is possible to increase the cross-sectional area of the electrode as compared with the conventional cold cathode fluorescent lamps by providing nickel with a predetermined width plating process on the inner wall of the glass tube, thereby providing high luminance and extending the lifespan. It is possible to provide a cold cathode fluorescent lamp that can be extended.

Claims (1)

그 내부에 수은, 아르곤, 네온 등의 혼합가스가 충전되며 형광물질이 도포된 유리관(10)과, 상기 유리관(10) 양단에 장착되어 혼합가스가 외부로 새어나가지 않도록 하는 봉착부(12)와, 상기 봉착부(12)를 관통하여 유리관(10) 외부에서 유리관(10) 내부로 연장되는 리드선(14)과, 상기 유리관(10) 양단 내부에서 상기 리드선(14) 단부에 접속되는 전극(16)과, 유리관(10) 양단 내부에서 봉착부(12)에서 전극(16)까지의 리드선(14)을 감싸는 스템(18)을 포함하여 구성되는 냉음극 형광램프에 있어서, 상기 전극(16)은 리드선(14)에 연결된 일단을 중심으로 유리관(10) 내벽까지 방사형으로 연장되는 나팔관 형상으로 이루어지고, 상기 유리관(10) 내벽에는 전극(16)의 타단에서 연장되어 소정 폭 니켈 도금처리된 전극연장부(20)가 구비되어 이루어지는 것을 특징으로 하는 냉음극 형광램프.A glass tube 10 filled with a mixed gas such as mercury, argon, neon, and the like, and a sealing portion 12 mounted at both ends of the glass tube 10 to prevent the mixed gas from leaking to the outside; A lead wire 14 penetrating through the sealing part 12 and extending from the outside of the glass tube 10 to the inside of the glass tube 10, and an electrode 16 connected to an end of the lead wire 14 in both ends of the glass tube 10. And a stem 18 surrounding the lead wire 14 from the sealing portion 12 to the electrode 16 in both ends of the glass tube 10. It is made in the shape of a fallopian tube extending radially to the inner wall of the glass tube 10 with respect to one end connected to the lead wire 14, the inner wall of the glass tube 10 extends from the other end of the electrode 16 to a predetermined width nickel plated electrode extension Cold sound characterized in that the part 20 is provided Fluorescent lamps.
KR1020020046115A 2002-08-05 2002-08-05 Cold cathode fluorescent lamp KR20040013263A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04137430A (en) * 1990-09-28 1992-05-12 Toshiba Lighting & Technol Corp Cold cathode fluorescent lamp and liquid crystal display device
JPH05275059A (en) * 1992-03-27 1993-10-22 Toshiba Lighting & Technol Corp Cold cathode fluorescent lamp
JPH10188884A (en) * 1996-12-25 1998-07-21 Ushio Inc Cold cathode discharge lamp
JP2002313278A (en) * 2001-04-16 2002-10-25 Harison Toshiba Lighting Corp Cold cathode type electrode, discharge lamp and illumination device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04137430A (en) * 1990-09-28 1992-05-12 Toshiba Lighting & Technol Corp Cold cathode fluorescent lamp and liquid crystal display device
JPH05275059A (en) * 1992-03-27 1993-10-22 Toshiba Lighting & Technol Corp Cold cathode fluorescent lamp
JPH10188884A (en) * 1996-12-25 1998-07-21 Ushio Inc Cold cathode discharge lamp
JP2002313278A (en) * 2001-04-16 2002-10-25 Harison Toshiba Lighting Corp Cold cathode type electrode, discharge lamp and illumination device

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