KR100252069B1 - Cathode ray tube - Google Patents

Cathode ray tube Download PDF

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Publication number
KR100252069B1
KR100252069B1 KR1019970054870A KR19970054870A KR100252069B1 KR 100252069 B1 KR100252069 B1 KR 100252069B1 KR 1019970054870 A KR1019970054870 A KR 1019970054870A KR 19970054870 A KR19970054870 A KR 19970054870A KR 100252069 B1 KR100252069 B1 KR 100252069B1
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South Korea
Prior art keywords
electron gun
ray tube
cathode ray
deflection yoke
funnel
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KR1019970054870A
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Korean (ko)
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KR19990033501A (en
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이용호
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손욱
삼성에스디아이주식회사
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Priority to KR1019970054870A priority Critical patent/KR100252069B1/en
Publication of KR19990033501A publication Critical patent/KR19990033501A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/003—Arrangements for eliminating unwanted electromagnetic effects, e.g. demagnetisation arrangements, shielding coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/70—Arrangements for deflecting ray or beam
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/0007—Elimination of unwanted or stray electromagnetic effects
    • H01J2229/0046—Preventing or cancelling fields within the enclosure
    • H01J2229/0053—Demagnetisation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/70—Electron beam control outside the vessel
    • H01J2229/703—Electron beam control outside the vessel by magnetic fields
    • H01J2229/7038—Coil separators and formers

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

Abstract

PURPOSE: A cathode ray tube is provided to reduce a convergence drift in an electron gun by enhancing an efficiency of an element in the electron gun. CONSTITUTION: The cathode ray tube comprises a panel(21) having a fluorescent film at an inner side surface thereof. A funnel is engaged with the panel(21) and has a neck portion. An electron gun is inserted into the neck portion and is sealed therein. A deflection yoke for deflecting an electric beam emitted from the electron gun is installed at a corn-shaped portion of the funnel. A portion(40) for removing a magnetic field is installed at the deflection yoke. The portion(40) includes a coil(42) which is installed at a separator(31) of the deflection yoke. The coil(42) removes an electromagnetic field and element of the electron gun in a clamping portion of the deflection yoke.

Description

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

본 발명은 음극선관에 관한 것으로서, 더 상세하게는 음극선관를 구성하는 부품의 자계를 소자시키기 위한 구조가 개선된 음극선관에 관한 것이다.The present invention relates to a cathode ray tube, and more particularly, to a cathode ray tube having an improved structure for elemental magnetic fields of components constituting the cathode ray tube.

통상적으로 음극선관은 도 1에 도시된 바와 같이 3 색으로 발광하는 형광막이 내면에 형성된 패널(Panel,11)과, 상기 패널의 단부와 봉착되는 펀넬(Funnel,12)을 포함한다. 그리고, 상기 패널(11)의 내면에는 형광막과 소정 간격 이격되어 전자 빔 관통공이 다수개 형성된 섀도우마스크 프레임 조립체가 설치된다. 그리고 상기 펀넬의 네크부(13)과 콘부에는 각각 전자총(Electron Gun,14)과 편향요오크(Deflection Yoke,15)가 설치되어 있다.Typically, the cathode ray tube includes a panel 11 formed on an inner surface of a fluorescent film emitting three colors as shown in FIG. 1, and a funnel 12 sealed to an end of the panel. In addition, a shadow mask frame assembly having a plurality of electron beam through holes spaced apart from the fluorescent film by a predetermined distance is installed on the inner surface of the panel 11. The neck portion 13 and the cone portion of the funnel are provided with an electron gun 14 and a deflection yoke 15, respectively.

한편, 상기 펀넬(12)의 외면에는 패널(11)과 펀넬(12)이 봉착시 그 내부에 설치되는 부품들로부터 발생하는 자기가 일정한 방향으로 흐르도록 유지하는 소자 코일(17)이 방폭밴드(16)와 접지되도록 감겨진다.On the other hand, on the outer surface of the funnel 12, the element coil 17, which maintains the magnetic flux generated from the components installed therein when the panel 11 and the funnel 12 are sealed in a constant direction, the explosion-proof band ( 16) and to be grounded.

이와 같이 구성된 종래의 음극선관(10)은 상기 펀넬(12)의 네크부에 설치된 상기 전자총(14)으로부터 방출된 전자빔이 형광막의 주사위치에 따라 상기 편향 요크(15)에 의해 편향된 후, 섀도우마스크의 전자빔 통과공을 통과하여 형광막에 랜딩됨으로써 하나의 화소를 이루게 되고, 이들 화소가 모여 하나의 화면을 이루게 된다.The conventional cathode ray tube 10 configured as described above has a shadow mask after the electron beam emitted from the electron gun 14 installed in the neck portion of the funnel 12 is deflected by the deflection yoke 15 according to the dice of the fluorescent film. By passing through the electron beam through hole of the landing in the fluorescent film to form a single pixel, these pixels are gathered to form a screen.

상기와 같은 과정에서 음극선관(10)에 전원이 공급되었을 때, 상기 펀넬(12) 내부에 설치되어 외부자계의 영향 또는 부품으로부터 발생하는 자기의 방향은 부품의 형상에 따라서 무질서하게 배열된다. 따라서 음극선관의 초기 작동시 상기 소자코일(17)에 의해 음극선관의 펀넬을 중심으로하는 소자(탈자)시키게 된다.When power is supplied to the cathode ray tube 10 in the above process, it is installed inside the funnel 12 and the direction of magnetism generated from the influence of an external magnetic field or a component is randomly arranged according to the shape of the component. Therefore, during the initial operation of the cathode ray tube, the element coil 17 causes the element (demagnetization) centering on the funnel of the cathode ray tube.

그러나 상술한 바와 같은 소자는 네크부에 장착된 전자총을 충분히 소자시킬 수 없어 잔류하는 자계에 의해 전자총으로부터 방출된 전자빔이 영향을 받게되어 설정위치의 형광막에 전자빔이 정확히 충돌되지 못하게 되는 문제점을 가지고 있다. 특히 상술한 바와 같은 소자코일에 의해 소자효과의 미흡은 전자총의 콘버어젼스 드리프트 변화에 영향을 주지 못하게 된다.However, the above-described device has a problem in that the electron gun mounted on the neck portion cannot be sufficiently elemented so that the electron beam emitted from the electron gun is affected by the remaining magnetic field so that the electron beam does not exactly collide with the fluorescent film at the set position. have. In particular, due to the device coil as described above, the insufficient effect of the device does not affect the change in the convergence drift of the electron gun.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 전자총의 소자효율을 향상시켜 전자총의 콘버어젼스 드리프트 현상을 줄일 수 있는 음극선관을 제공함에 그 목적이 있다.The present invention has been made to solve the above problems, an object of the present invention is to provide a cathode ray tube that can reduce the convergence drift phenomenon of the electron gun by improving the device efficiency of the electron gun.

도 1은 종래의 음극선관을 도시한 사시도,1 is a perspective view showing a conventional cathode ray tube,

도 2는 본 발명에 따른 음극선관을 도시한 사시도.Figure 2 is a perspective view showing a cathode ray tube according to the present invention.

<도면의 주요부분에 대한 부호의 간단한 설명><Brief description of symbols for the main parts of the drawings>

10,20. 음극선관 11,21. 패널10,20. Cathode ray tube 11,21. panel

12,22. 펀넬 14,23. 전자총12,22. Funnel 14,23. Electron gun

15,30. 편향요오크15,30. Deflection yoke

17,25. 소자코일17,25. Element coil

상기와 같은 목적을 달성하기 위하여 본 발명의 음극선관은, 내면에 형광막이 형성된 패널; 상기 패널과 봉착되며 네크부를 가지는 펀넬; 상기 네크부에 봉입되는 전자총과; 상기 펀넬의 콘부에 설치되어 전자총으로부터 방출된 전자빔을 편향시키는 편향요오크와; 상기 편향요오크에 설치되어 전자총을 중심으로 탈자부:을 포함하여 된 것을 그 특징으로 한다.In order to achieve the above object, the cathode ray tube of the present invention, a panel formed with a fluorescent film on the inner surface; A funnel sealing the panel and having a neck portion; An electron gun encapsulated in the neck portion; A deflection yoke installed at a cone of the funnel to deflect an electron beam emitted from an electron gun; It is characterized in that it is installed in the deflection yoke, including a demagnetizing portion: the electron gun as the center.

본 발명에 있어서, 상기 탈자부는 편향요오크의 세퍼레이터에 설치되는 탈자코일을 포함한다.In the present invention, the demagnetizing portion includes a demagnetizing coil provided in the separator of the deflection yoke.

이하에서 첨부된 도면을 참조하면서 본 발명에 따른 음극선관의 한 바람직한 실시예를 상세하게 설명하면 다음과 같다.Hereinafter, a preferred embodiment of the cathode ray tube according to the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 음극선관(20)의 일 실시예를 나타내 보였다.2 shows an embodiment of a cathode ray tube 20 according to the present invention.

도면을 참조하면, 내면에 형광막이 형성된 패널(21)과, 이 패널과 봉착되며 네크부에 전자총(23)이 봉입된 펀넬(22)와, 상기 패널(21)과 펀넬(22)의 봉착부위에 장착된 방폭밴드(24)와, 상기 방폭밴드에 접지되며 펀넬(22)의 외주면에 감긴 제1소자코일(25)을 포함한다. 그리고 상기 펀넬(22)의 콘부에는 상기 전자총으로부터 방출된 전자빔을 편향시키기 위한 편향요오크(30)가 설치되는데, 이 편향요오크에는 전자총(23)을 중심으로 소자시키기 위한 탈자부(40)가 구비된다. 상기 탈자부(40)는 편향요오크의 세퍼레이터(31)의 상단부 또는 고정부(32)의 적어도 일측에 설치되는데, 이 탈자부(40)는 탈자코일(42)을 포함한다. 즉 편향요오크의 클램핑 부에 전자총을 구성하는 부품의 탈자를 위한 탈자 코일이 설치된다.Referring to the drawings, a panel 21 having a fluorescent film formed on an inner surface thereof, a funnel 22 encapsulated with the panel and an electron gun 23 enclosed in a neck portion, and an encapsulation portion of the panel 21 and the funnel 22. And an explosion-proof band 24 mounted to the first element coil 25, which is grounded to the explosion-proof band and wound around the outer circumferential surface of the funnel 22. In addition, the cone portion of the funnel 22 is provided with a deflection yoke 30 for deflecting the electron beam emitted from the electron gun, and the deflection yoke is provided with a demagnetization portion 40 for elementally centering the electron gun 23. It is provided. The demagnetizing portion 40 is installed on at least one side of the upper end or the fixing portion 32 of the separator 31 of the deflection yoke, the demagnetizing portion 40 includes a demagnetizing coil 42. In other words, a demagnetizing coil for demagnetizing the components constituting the electron gun is installed in the clamping portion of the deflection yoke.

이와 같이 구성된 상기 음극선관(20)은 초기 작동시 편향요오크(25)의 부품 또는 상기 네크부에 봉착된 전자총(23) 등이 외부자계의 영향으로 발생되는 자계에 자계의 배열 방향이 무질서하게 배열되는데, 이 자계는 펀넬(22)의 외주면에 설치되는 제1소자코일(25)과 편향요오크(30)에 설치되는 탈자부(40)의 탈자코일(42)에 소정의 전압이 인가됨으로써 탈자된다.The cathode ray tube 20 configured as described above is disordered in the direction in which the magnetic field is arranged in a magnetic field generated by the influence of an external magnetic field by a component of the deflection yoke 25 or the electron gun 23 encapsulated in the neck portion at the initial operation. The magnetic field is applied by applying a predetermined voltage to the demagnetizing coil 42 of the demagnetizing section 40 of the first element coil 25 and the deflection yoke 30 provided on the outer circumferential surface of the funnel 22. You are deprived.

상술한 바와 같은 탈자는 제1소자코일(25)과 탈자부의 영향으로 인하여 전자총과 편향요오크의 금속 부품이 자계방향이 일정한 방향성을 가지게 되어, 전자총(23)으로부터 방출된 전자빔의 콘버어젼스 드리프트 현상의 변화를 줄일 수 있게된다.The demagnetization as described above has a constant direction of the magnetic field of the metal gun of the electron gun and the deflection yoke due to the influence of the first element coil 25 and the demagnetization portion, the convergence drift of the electron beam emitted from the electron gun 23 The change in the phenomenon can be reduced.

이상의 설명에서와 같이 본 발명에 따른 음극선관은 펀넬에 콘부에 장착되는 편향요오크에 탈자부를 장착함으로써, 각 부품에서 발생하는 자기의 배열성을 가지게 한다. 특히 전자총 전극의 무질서한 자계의 배열에 의한 전자빔의 미스랜딩을 불일수 있으며, 나아가서는 음극선관의 해상도를 향상시킬 수 있다.As described above, the cathode ray tube according to the present invention has a demagnetizing portion mounted to a deflection yoke mounted to a cone portion in a funnel, thereby having an arrangement of magnetism generated in each component. In particular, the mislanding of the electron beam due to the disordered arrangement of the magnetic field of the electron gun electrode can be ignited, and further, the resolution of the cathode ray tube can be improved.

본 발명은 도면에 도시된 일 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가능하다는 점을 이해할 것이다. 따라서, 본 발명의 진정한 기술적 보호 범위는 등록청구범위의 기술적 사상에 의해 정해져야 할 것이다.Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the claims.

Claims (2)

내면에 형광막이 형성된 패널;A panel having a fluorescent film formed on an inner surface thereof; 상기 패널과 봉착되며 네크부를 가지는 펀넬; 상기 네크부에 봉입되는 전자총과; 상기 펀넬의 콘부에 설치되어 전자총으로부터 방출된 전자빔을 편향시키는 편향요오크와; 상기 편향요오크에 설치된 탈자부;를 포함하여 된 것을 특징으로 하는 음극선관.A funnel sealing the panel and having a neck portion; An electron gun encapsulated in the neck portion; A deflection yoke installed at a cone of the funnel to deflect an electron beam emitted from an electron gun; Cathode ray tube comprising a; demagnetizing portion installed in the deflection yoke. 제1항에 있어서,The method of claim 1, 상기 탈자부는 편향오오크의 세퍼레이터에 설치되는 탈자코일을 포함하여 된 것을 특징으로 하는 음극선관.The demagnetizing portion is a cathode ray tube, characterized in that it comprises a demagnetizing coil is installed on the separator of the deflection oak.
KR1019970054870A 1997-10-24 1997-10-24 Cathode ray tube KR100252069B1 (en)

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