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KR100274868B1 - Cathod ray tube - Google Patents

Cathod ray tube Download PDF

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Publication number
KR100274868B1
KR100274868B1 KR1019980009496A KR19980009496A KR100274868B1 KR 100274868 B1 KR100274868 B1 KR 100274868B1 KR 1019980009496 A KR1019980009496 A KR 1019980009496A KR 19980009496 A KR19980009496 A KR 19980009496A KR 100274868 B1 KR100274868 B1 KR 100274868B1
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KR
South Korea
Prior art keywords
funnel
deflection yoke
ray tube
conductive film
cathode ray
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Expired - Fee Related
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KR1019980009496A
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Korean (ko)
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KR19990075343A (en
Inventor
이상훈
석원호
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김순택
삼성에스디아이주식회사
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86Vessels; Containers; Vacuum locks
    • H01J29/867Means associated with the outside of the vessel for shielding, e.g. magnetic shields
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86Vessels; Containers; Vacuum locks
    • H01J29/88Vessels; Containers; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00Details of cathode ray tubes or electron beam tubes
    • H01J2229/863Passive shielding means associated with the vessel
    • H01J2229/8631Coatings
    • H01J2229/8632Coatings characterised by the material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00Details of cathode ray tubes or electron beam tubes
    • H01J2229/88Coatings
    • H01J2229/882Coatings having particular electrical resistive or conductive properties

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  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

PURPOSE: A cathode ray tube is provided to reduce an electronic wave emission by forming a far infrared rays emission film at a corn part which a deflection yoke is installed at. CONSTITUTION: A panel(20) has a screen surface(21). A funnel(30) is sealed out with the panel(20) and an electron gun(35) is inserted and sealed in a neck part(31) of the funnel(30). An external conductive film(34) is sprayed continuously at a corn part(32) and a neck part(31) of the external surface of the funnel(30). A deflection yoke(36) is placed at the cone part(32) of the funnel(30). A far infrared rays emission film(40) is installed between a separator(36a) of the deflection yoke(36) and the cone part(32) of the external surface of the funnel(30). The far infrared ray emission film(40) is composed of ceramic.

Description

음극선관{Cathod ray tube}Cathode ray tube {Cathod ray tube}

본 발명은 음극선관에 관한 것으로, 더 상세하게는 펀넬의 편향요오크 장착부가 개선된 음극선관에 관한 것이다.The present invention relates to a cathode ray tube, and more particularly to a cathode ray tube with an improved deflection yoke mount of a funnel.

일반적인 음극선관은 제1도에 도시된 바와 같이 투명창으로서 화면의 재생시에 영상을 재현하는 스크린면(2a)을 가진 패널(2)과, 상기 패널(2)과 봉착되어 음극선관(10)의 외부용기를 형성하며 네크부(3a)에 전자총(4)이 봉입된 펀넬(3)과, 이 펀넬(3)의 콘부(3b)에 설치되는 편향요오크(5)를 구비하여 이루어진다.A typical cathode ray tube is a transparent window as shown in FIG. 1 and has a panel 2 having a screen surface 2a for reproducing an image upon reproduction of a screen, and the panel 2 is sealed to the cathode ray tube 10. And a deflection yoke 5 provided in the cone portion 3b of the funnel 3 to form the outer container, the funnel 3 having the electron gun 4 enclosed in the neck portion 3a.

이와 같이 구성된 음극선관은 전자총(4)으로부터 방출된 전자빔이 편향요오크(5)에 의해 주사위치에 따라 선택적으로 편향되어 형광막에 주사됨으로써 각각의 형광체를 여기시켜 화상을 형성하게 된다. 이와 같이 형성된 화상을 시청하는 시청자는 패널(2)의 내면에 형성된 형광막이 발광함으로써 이루어지는 화면을 시청하는 것이라고 말할 수 있다.In the cathode ray tube configured as described above, the electron beam emitted from the electron gun 4 is selectively deflected by the deflection yoke 5 according to the dice so as to be scanned into the fluorescent film to excite each phosphor to form an image. The viewer who views the image formed in this way can say that the screen formed by the emission of the fluorescent film formed on the inner surface of the panel 2 is viewed.

그런데, 상술한 바와 같은 음극선관은 전자총으로부터 방출된 전자빔을 편향시키기 위한 편향요오크(5) 또는 주사되는 전자빔의 궤적을 보정하기 위한 보조 코일 유니트 등에 의해 전자파가 발생되는데, 이 전자파의 발생은 인체에 좋지 않은 것으로 인식되어져 왔다. 따라서 최근에는 전자파에 대한 규정이 설정치 이상 넘지 않도록 규정하고 있다.However, in the cathode ray tube as described above, electromagnetic waves are generated by the deflection yoke 5 for deflecting the electron beam emitted from the electron gun or an auxiliary coil unit for correcting the trajectory of the scanned electron beam. It has been recognized as bad for. Therefore, in recent years, the regulation on electromagnetic waves is prescribed not to exceed the set value.

상기와 같이 편향요오크 및 주변기기로부터 방출되는 전자파를 줄이기 위한 방법이 US5,635,793호, US5,304,891호, US5,451,840호에 개시되어 있다.A method for reducing electromagnetic waves emitted from deflection yokes and peripherals as described above is disclosed in US Pat. Nos. 5,635,793, 5,304,891 and 5,451,840.

개시된 방법중의 하나는 도 2에 도시된 바와 같이 외부 도전막(6)이 펀넬의 외면과 콘부(3b) 및 전자총(4)이 장착되는 네크부(3a)의 외주면까지 도포되고, 이 외부도전막(6)은 접지된다.In one of the disclosed methods, as shown in FIG. 2, an outer conductive film 6 is applied to the outer surface of the funnel and the outer circumferential surface of the neck portion 3a on which the cone portion 3b and the electron gun 4 are mounted. The membrane 6 is grounded.

상술한 바와 같이 구성된 음극선관은 편향요오크로부터 방출된 전자파가 콘부와 네크부에 도포된 외부도전막(6)에 의해 차단되어 음극선관 세트 외부로의 방출을 억제하게된다.In the cathode ray tube constructed as described above, electromagnetic waves emitted from the deflection yoke are blocked by the outer conductive film 6 applied to the cone portion and the neck portion to suppress the emission to the outside of the cathode ray tube set.

그리고 다른 예로서는 펀넬의 외주면을 둘러싼 도전막과, 전자파가 스크린면을 통하여 방출되며 정전기의 발생을 억제하기 위하여 스크린면에 도포되는 투명도전막과, 상기 도전막과 투명도전막을 접지시키는 수단을 포함한다.And another example includes a conductive film surrounding the outer circumferential surface of the funnel, a transparent conductive film is applied to the screen surface to suppress the generation of static electricity and electromagnetic waves are emitted through the screen surface, and a means for grounding the conductive film and the transparent conductive film.

상기와 같이 스크린막에 전자파의 차폐를 위하여 스크린면에 투명도전막을 코팅함에 있어서, 효과적인 차폐를 위해서는 단위면적당 저항이 103Ω 보다 낮은 저항을 가져야 한다. 그러나 상기와 같은 저항값을 유지시키기 위해서는 투명도전막의 코팅을 위한 비용이 상승하게 되는 문제점을 가지고 있다.As described above, in the coating of the transparent conductive film on the screen surface for shielding electromagnetic waves, the resistance per unit area should have a resistance lower than 10 3 Ω for effective shielding. However, in order to maintain the resistance value as described above, there is a problem in that the cost for coating the transparent conductive film increases.

본 발명은 상기 문제점을 해결하기 위한 것으로, 유해 전자파을 차단함과 아울러 원적외선의 발생량을 늘릴 수 있으며, 투명도전막을 이루는 재질의 저항을 높인 음극선관을 제공함에 그 목적이 있다.The present invention is to solve the above problems, and to block harmful electromagnetic waves and increase the amount of far-infrared rays, and an object thereof is to provide a cathode ray tube with a high resistance of the material constituting the transparent conductive film.

도 1은 일반적인 음극선관의 단면도,1 is a cross-sectional view of a typical cathode ray tube,

도 2는 종래 음극선관의 외주면에 외부도전막이 도포된 상태를 도시한 측면도,Figure 2 is a side view showing a state in which the outer conductive film is applied to the outer peripheral surface of the conventional cathode ray tube,

도 3은 본 발명에 따른 음극선관의 사시도,3 is a perspective view of a cathode ray tube according to the present invention;

도 4는 도 3에 도시된 음극선관의 네크부를 확대하여 도시한 단면도.4 is an enlarged cross-sectional view of the neck portion of the cathode ray tube shown in FIG.

〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

20; 패널 30; 펀넬20; Panel 30; Funnel

31; 네크부 35; 전자총31; Neck portion 35; Electron gun

36; 편향요오크 40; 원적외선 방사막36; Deflection yoke 40; Far Infrared Radiation Film

상기 목적을 달성하기 위하여 본 발명은, 스크린면을 가지는 패널과, 상기 패널과 봉착되며 네크부에 전자총이 봉입된 펀넬과, 상기 펀넬 외주면의 콘부 및 네크부에 연속적으로 도포되는 외부도전막과, 상기 펀넬의 콘부에 장착되는 편향요오크와, 상기 편향요오크와 펀넬의 콘부 외주면 사이에 설치되는 원적외선 방사막을 포함하여 된 것을 그 특징으로 한다.In order to achieve the above object, the present invention provides a panel having a screen surface, a funnel sealed to the panel and the electron gun is sealed in the neck portion, an outer conductive film continuously applied to the cone portion and the neck portion of the outer peripheral surface of the funnel, It characterized in that it comprises a deflection yoke mounted to the cone portion of the funnel, and a far-infrared radiation film provided between the deflection yoke and the outer peripheral surface of the cone portion of the funnel.

상기 원적외선 방사막은 바이오 세라믹으로 이루어진다.The far-infrared radiation film is made of bio-ceramic.

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

본 발명에 따른 음극선관의 일 실시예를 도 3 및 도 4에 나타내 보였다.One embodiment of the cathode ray tube according to the present invention is shown in Figs.

도시된 바와 같이 내면에 형광막을 형성된 스크린면(21)을 가지는 패널(20)과, 상기 패널(20)과 봉착되는 것으로 네크부(31)와 콘부(32)를 가지는 펀넬(30)을 포함한다. 상기 펀넬(30)의 외주면 및 네크부(31)와 콘부(32)의 외주면에는 흑연으로 이루어진 외부 도전막(34)이 형성된다. 그리고 상기 네크부(31)에는 전자총(35)이 설치되고, 상기 펀넬(30)의 콘부(32)에는 상기 전자총으로부터 방출된 전자빔을 편향시키는 편향요오크(36)가 설치된다. 상기 펀넬(30)의 콘부(32)의 외주면과 편향요오크(36)의 세퍼레이터(36a)의 사이에는 원적외선을 방출하는 원적외선 방사막(40)이 형성된다. 상기 원적외선 방출막은 바이오 세라믹으로 이루어진다. 이 바이오 세라믹은 편향요오크의 발생열과 이로부터 방출되는 전자파에 의해 원적외선 방출이 활성화 된다.As shown in the drawing, a panel 20 having a screen surface 21 having a fluorescent film formed on its inner surface and a funnel 30 having a neck portion 31 and a cone portion 32 sealed to the panel 20 are included. . An outer conductive film 34 made of graphite is formed on the outer circumferential surface of the funnel 30 and the outer circumferential surfaces of the neck portion 31 and the cone portion 32. The neck portion 31 is provided with an electron gun 35, and the cone portion 32 of the funnel 30 is provided with a deflection yoke 36 for deflecting the electron beam emitted from the electron gun. A far-infrared radiation film 40 is formed between the outer circumferential surface of the cone portion 32 of the funnel 30 and the separator 36a of the deflection yoke 36. The far infrared ray emitting film is made of bio-ceramic. In this bio-ceramic, far-infrared emission is activated by the generated heat of deflection yoke and the electromagnetic waves emitted from it.

그리고 상기 패널(20)의 스크린면에는 전자파의 차폐를 위해 투명도전막이 이 형성되며 이 투명도전막(38)은 상기 외부도전막과 접지(도시되지 않음)된다.A transparent conductive film is formed on the screen surface of the panel 20 to shield electromagnetic waves, and the transparent conductive film 38 is grounded with the external conductive film (not shown).

상술한 바와 같이 구성된 본 발명에 따른 음극선관은 네크부에 설치된 전자총으로부터 방출된 전자빔이 편향요오크(36)에 의해 편향되어 형광막에 랜딩됨으로써 형광막을 여기시켜 화상을 형성하게 된다.In the cathode ray tube according to the present invention configured as described above, the electron beam emitted from the electron gun provided in the neck portion is deflected by the deflection yoke 36 and landed on the fluorescent film to excite the fluorescent film to form an image.

상술한 바와 같이 화상을 형성하는 과정에서 상기 편향요오크(36)의 수직 및 수평 편향코일로부터 발생된 전자파는 상기 원적외선 방사막에 의해 원적외선으로 변화된다. 따라서 전자파의 주 발생원인 편향요오크로부터 발생되는 전자파를 줄일 수 있다. 즉, 상기 편향요오크는 도면에 도시되어 있지 않으나 세퍼레이터(36a)의 내주면에 수직편향코일이 설치되고 외주면에는 수직 편향코일이 설치되는데, 상기 각 코일로부터 방출된 전자파의 일부는 원적외선 방사막(40)에 의해 원적외선으로 변화되므로 편향요오크로부터 방출되는 전자파의 일부를 감쇄시킬 수 있게 된다.As described above, the electromagnetic waves generated from the vertical and horizontal deflection coils of the deflection yoke 36 are changed to the far infrared rays by the far infrared radiation film in the process of forming the image. Therefore, the electromagnetic wave generated from the deflection yoke, which is the main source of electromagnetic waves, can be reduced. That is, although the deflection yoke is not shown in the figure, a vertical deflection coil is installed on the inner circumferential surface of the separator 36a and a vertical deflection coil is installed on the outer circumferential surface, and a part of the electromagnetic waves emitted from the respective coils is far infrared ray radiating film 40. Because of the change to far-infrared rays, it is possible to attenuate some of the electromagnetic waves emitted from the deflection yoke.

또한 상기 편향요오크로부터 발생되는 전자파를 줄일 수 있으므로 스크린면에 도포되는 투명 도전막의 저항값을 종래보다 높일 수 있어 투명도전막의 재료 선정이 용이하고 투명 도전막의 도포에 따른 비용을 절감할 수 있다.In addition, since the electromagnetic wave generated from the deflection yoke can be reduced, the resistance value of the transparent conductive film applied to the screen surface can be higher than that of the prior art, so that the material selection of the transparent conductive film is easy and the cost of applying the transparent conductive film can be reduced.

상기와 같이 본 발명에 따른 음극선관은 편향요오크가 설치되는 콘부에 원적외선 방사막을 형성함으로써 음극선관으로부터의 전자파 방출의 방출을 줄일 수 있으며, 특히 스크린면으로 방출되는 전자파를 줄이기 위한 투명도전막을 상대적으로 높은 저항을 가진 물질을 사용할 수 있다.As described above, the cathode ray tube according to the present invention can reduce the emission of electromagnetic wave emission from the cathode ray tube by forming a far-infrared radiation film in the cone portion where the deflection yoke is installed, and in particular, the transparent conductive film for reducing the electromagnetic wave emitted to the screen surface is relatively High resistance materials can be used.

본 발명은 도면에 도시된 실시예를 예로들어 설명하였으나 이는 예시적인 것에 불과하며 본원 발명의 기술적 범위내에서 다양한 형태로 변형 가능함은 물론이다.Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely exemplary and may be modified in various forms within the technical scope of the present invention.

Claims (2)

스크린면을 가지는 패널과, 상기 패널과 봉착되며 네크부에 전자총이 봉입된 펀넬과, 상기 펀넬 외주면의 콘부 및 네크부에 연속적으로 도포되는 외부도전막과, 상기 펀넬의 콘부에 장착되는 편향요오크와, 상기편향요오크와 펀넬의 콘부외주면 사이에 설치되는 원적외선 방사막을 포함하여 된 것을 특징으로 하는 음극선관.A panel having a screen surface, a funnel sealed to the panel and encapsulated with an electron gun in the neck portion, an outer conductive film continuously applied to the cone portion and the neck portion of the outer peripheral surface of the funnel, and a deflection yoke mounted to the cone portion of the funnel And a far-infrared radiation membrane provided between the deflection yoke and the outer peripheral surface of the cone portion of the funnel . 제1항에 있어서, 상기 원적외선 방사막은 세라믹으로 이루어진 것을 특징으로 하는 음극선관.The cathode ray tube according to claim 1, wherein the far-infrared radiation film is made of ceramic.
KR1019980009496A 1998-03-19 1998-03-19 Cathod ray tube Expired - Fee Related KR100274868B1 (en)

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