KR0156494B1 - Electron gun cathode structure for cathode ray tube - Google Patents

Electron gun cathode structure for cathode ray tube

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Publication number
KR0156494B1
KR0156494B1 KR1019940018878A KR19940018878A KR0156494B1 KR 0156494 B1 KR0156494 B1 KR 0156494B1 KR 1019940018878 A KR1019940018878 A KR 1019940018878A KR 19940018878 A KR19940018878 A KR 19940018878A KR 0156494 B1 KR0156494 B1 KR 0156494B1
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KR
South Korea
Prior art keywords
cathode
electron gun
ray tube
cathodes
cathode ray
Prior art date
Application number
KR1019940018878A
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Korean (ko)
Other versions
KR960005708A (en
Inventor
정동근
Original Assignee
엄길용
오리온전기주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 엄길용, 오리온전기주식회사 filed Critical 엄길용
Priority to KR1019940018878A priority Critical patent/KR0156494B1/en
Publication of KR960005708A publication Critical patent/KR960005708A/en
Application granted granted Critical
Publication of KR0156494B1 publication Critical patent/KR0156494B1/en

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Classifications

    • 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
    • H01J29/46Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48Electron guns

Abstract

본 발명은 열방사 특성이 균일한 음극선관용 전자총에 대해 개시한다. 이를 위한 본 발명 음극선관용 전자총의 음극구조체는 센터 캐소우드(8)의 슬리이브(13)에 복수의 방열구명(13')이 형성된 구조를 가는 바, 이는 센터 캐소우드(8)와 그 양측의 캐소우드(7)(9) 열방사특성을 균일하게 만들어 줌으로써, 각각의 해당 캐소드에서의 전자 방출특성을 균일토록 하여 균일한 휘도의 화상을 얻게 하는 효과적인 이점을 가진다.The present invention discloses an electron gun for cathode ray tubes with uniform thermal radiation characteristics. The cathode structure of the electron gun for the cathode ray tube of the present invention for this purpose has a structure in which a plurality of heat dissipation life (13 ') is formed in the sleeve 13 of the center cathode 8, which is the center cathode 8 and both sides By making the cathodes 7 and 9 thermal radiation uniform, the electron emission characteristics at the respective cathodes are made uniform to obtain an image of uniform brightness.

Description

음극선관용 전자총의 음극구조체Cathode structure of electron gun for cathode ray tube

제1도는 전자총의 개략 단면도.1 is a schematic cross-sectional view of an electron gun.

제2도는 캐소드를 나타낸 개략 단면도.2 is a schematic cross-sectional view showing a cathode.

제3도는 본 발명에 따른 센터 캐소우드의 슬리이브를 나타낸 사시도이다.3 is a perspective view showing a sleeve of the center cathode according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

7,8,9: 캐소우드 13 : 슬리이브7,8,9: cathode 13: sleeve

13' : 방열구멍13 ': heat dissipation hole

본 발명은 음극선관용 전자총의 음극구조체에 관한 것으로서, 특히 R,G,B의 각 캐소우드에서 열방사 특성이 균일하도록 그 구조를 개량한 음극선관용 전자총의 음극구조체에 관한 것이다.The present invention relates to a cathode structure of an electron gun for a cathode ray tube, and more particularly to an anode structure of an electron gun for a cathode ray tube in which its structure is improved so that thermal radiation characteristics are uniform in each cathode of R, G, and B.

일반적으로 음극선관용 전자총은 제1도에 도시된 바와같이 히터의 가열로 3개의 R,G,B 캐소우드(7)(8)(9)로부터 각각 방출된 전자는 제어전극인 제1전극(11)과 가속전극인 제2전극(12)에 의해 전자빔으로 형성되고, 이 전자빔은 집속전극(14)과 애노우드전극(15)에 의해 접속되어 패널(18)의 내면에 형성된 형광체(16)에 결상되게 된다.In general, an electron gun for a cathode ray tube, as shown in FIG. 1, electrons emitted from three R, G, and B cathodes (7) (8) (9) by heating of a heater are first electrodes (11) as control electrodes. ) And a second electrode 12 which is an acceleration electrode, which are connected to the phosphor 16 formed on the inner surface of the panel 18 by being connected by the focusing electrode 14 and the anode wood 15. It is missing.

그런데, 야외측 캐소우드(7)(9)에 의한 영향으로 센타 캐소우드(8) 부근의 열이 상대적으로 더욱 상승하게 되어, 센타 캐소우드(8)에서의 전자방출이 많아지게 되어 형광체(16)에 결상되는 전자빔의 량에 차이가 발생되므로 화질이 저하되는 문제점이 발생된다.However, due to the influence of the outdoor cathodes 7 and 9, the heat in the vicinity of the center cathode 8 is relatively increased, and the electron emission from the center cathode 8 is increased so that the phosphor 16 ), A difference occurs in the amount of electron beams formed in the image.

이를 위해 종래에는 열방사 특성을 균일하게 하기 위하여, 센타 캐소우드(8)의 열팽창계수를 그 양외측 캐소우드(7)(9)의 열팽창계수보다 작은 물질을 사용하였다. 그런데, 이러한 종래의 전자총은 서로 다른 물질을 사용하므로서 제작상 번거로운 문제점이 있다.For this purpose, in order to make the thermal radiation property uniform, a material having a thermal expansion coefficient of the center cathode 8 smaller than the thermal expansion coefficients of both outer cathodes 7 and 9 is used. However, such a conventional electron gun has a problem in manufacturing because it uses different materials.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 간단한 구조로 센타 캐소우드와 그 양외측 캐소우드에서의 열방사특성을 균일하게 만들어 줌으로써, 각각의 해당 캐소우드에서의 전자 방출특성이 균일하도록 한 음극선관용 전자총의 음극구조체를 제공하는 데 그 목적이 있는 것이다.The present invention has been made to solve the above problems, by making the heat radiation characteristics in the center and both the outer and outer cathodes with a simple structure, the electron emission characteristics in each corresponding cathode is uniform It is an object of the present invention to provide a cathode structure of an electron gun for cathode ray tubes.

상기 목적을 달성하는 본 발명은 각각 히터가 내장되고 그 상부에 열전자방사물질이 도포된 슬리이브을 구비하여 열전자를 방출하는 센터 캐소우드와, 이의 양측에 각각 마련되는 양외측 캐소우드를 구비하는 음극선관용 전자총의 음극구조체에 있어서,The present invention for achieving the above object is a cathode ray tube having a center cathode for emitting hot electrons, each having a sleeve with a heater therein and coated with a thermal electron-emitting material, and both outer cathodes provided on both sides thereof. In the cathode structure of the electron gun,

상기 센터 캐소우드의 슬리이브의 주면에 방열구멍이 형성되어 된 것을 특징으로 한다.A heat dissipation hole is formed in the main surface of the sleeve of the center cathode.

상기 본 발명에 의하면, 센터 캐소우드의 슬리이브 외주면에 방열구멍을 형성함으로써 히터열이 외부로 방열되어 주울열이 감소되지만, 센터 캐소우드는 그 양외측 캐소우드의 히터열에 영향을 받음으로써 가열되어 그 양외측 캐소우드와 균일한 열전자 방사특성을 가진다.According to the present invention, the heater heat is radiated to the outside by forming a heat radiation hole in the sleeve outer peripheral surface of the center cathode to reduce the joule heat, but the center cathode is heated by being affected by the heater heat of both outer cathodes It has both outer cathodes and uniform thermoelectron radiation.

이하 첨부된 도면을 참조하면서 본 발명에 따른 바람직한 실시예을 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명에 나타나는 음극선관용 전자총의 구조는 제1도에 나타난 구조와 실질적으로 동일하므로 제1도를 참조하기로 한다. 또한 각 해당 참조번호도 동일한 부호를 사용하여 설명하기로 한다.The structure of the electron gun for cathode ray tube shown in the present invention is substantially the same as the structure shown in Figure 1 will be referred to Figure 1. In addition, each corresponding reference number will be described using the same reference numeral.

캐소우드(7-9)의 가열로 3개의 R,G,B 캐소우드로부터 각각 방출된 전자는 제어전극인 제1전극(11)과 가속전극인 제2전극(12)에 의해 전자빔으로 형성되고, 이 전자빔은 집속전극(14)과 애노우드전극(15)에 의해 접속되어 패널(18)의 내면에 형성된 형광체(16)에 결상되게 된다.The electrons emitted from the three R, G and B cathodes by heating the cathode 7-9 are formed as electron beams by the first electrode 11 serving as the control electrode and the second electrode 12 serving as the acceleration electrode. The electron beam is connected by the focusing electrode 14 and the anode electrode 15 to form an image on the phosphor 16 formed on the inner surface of the panel 18.

한편, 캐소우드은 제2도에 도시된 바와같이 히터(6)가 내장된 슬리이브(3)의 상부에 전자방사 물질(1)이 도포된 베이스메탈(2)이 용접고정되며, 그 하부는 인슐레이터(미도시)에 고정된 음극지지체(5)에 지지되는 홀더(4)가 삽입 고정되도록 구성되어 있다.Meanwhile, as shown in FIG. 2, the cathode is weld-fixed to the base metal 2 coated with the electrospinning material 1 on the upper portion of the sleeve 3 in which the heater 6 is embedded, and the lower portion of the cathode is insulated. The holder 4 supported by the negative electrode support 5 fixed to (not shown) is comprised so that it may be inserted and fixed.

여기서 본 발명의 특징적 구성으로서, 제3도에 도시된 바와같이 센터 캐소우드(8)의 슬리이브(13)에 복수의 구멍(13')을 형성하여서, 히터(6)의 방열(放熱)효과를 높이도록 하였다.Here, as a characteristic constitution of the present invention, as shown in FIG. 3, a plurality of holes 13 'are formed in the sleeve 13 of the center cathode 8, so that the heat dissipation effect of the heater 6 is achieved. To increase.

이와같이 구성된 음극구조체를 채용하는 본 발명은 각 캐소우드(7)(8)(9)의 각 히터(6)에서 발생하는 히터열은 동일하다. 그리고 센터 캐소우드(8)의 슬리이브(13)에 복수의 방열구멍(13')이 형성되므로서 이를 통해 히터열이 방출하게 되어 센터 캐소우드의 주울열은 그 양외측의 캐소우드(7)(9)보다 작게 되지만, 센터 캐소우드(8)는 그 양외측의 캐소우드(7)(9)로부터 발생하는 주울열의 영향을 받음으로써, 방열구멍(13')을 통해 손실된 주울열과 양외측의 캐소우드(7)(9)로부터 얻어진 주울열에 의해서 서로 상쇄되어 센터 캐소우드(8)는 그 양외측의 캐소우드(7)(9)와 동일한 주울열을 방생하게 된다.In the present invention employing the cathode structure configured as described above, heater heat generated in each heater 6 of each cathode 7, 8, 9 is the same. In addition, since a plurality of heat dissipation holes 13 'are formed in the sleeve 13 of the center cathode 8, the heat of the heater is discharged through the heat sink 13'. Although smaller than (9), the center cathode (8) is affected by joule heat generated from the cathodes (7) (9) on both sides thereof, thereby losing the joule heat and both outer sides lost through the heat dissipation holes (13 '). Each other is offset by the Joule heat obtained from the cathodes 7 and 9 of the center so that the center cathodes 8 generate the same Joule heat as the cathodes 7 and 9 on both sides thereof.

따라서 3개의 캐소우드(7)(8)(9)는 동일한 주울열을 발생하므로서, 본 발명의 음극선관용 전자총은 세터 캐소우드(8)와 그 양측의 캐소우드(7)(9) 열방사특성을 균일하게 만들어 줌으로써, 각각의 해당 캐소우드에서의 전자 방출특성을 균일토록 하여 균일한 휘도의 화상을 얻게 하는 효과적인 이점을 가진다.Therefore, the three cathodes (7) (8) (9) generate the same Joule heat, so that the electron gun for the cathode ray tube of the present invention has the setter cathode (8) and the cathodes (7) (9) on both sides. By making it uniform, it is effective to make the electron emission characteristic in each corresponding cathode uniform and to obtain an image of uniform brightness.

상술한 바와같이 본 발명은 전자 방출특성이 균일한 음극선관용 전자총의 음극구조체를 제공한다.As described above, the present invention provides a cathode structure of an electron gun for cathode ray tubes with uniform electron emission characteristics.

Claims (1)

각각 히터가 내장되고 그 상부에 열전자 방사물질이 도포된 슬리이브를 구비하여 열전자를 방출하는 센터 캐소우드와, 이의 양측에 각각 마련되는 양외측 캐소우드를 구비하는 음극선관용 전자총의 음극구조체에 있어서, 상기 센터 캐소우드의 슬리이브의 주면에 방열구멍이 형성되어 된 것을 특징으로 한다.In the cathode structure of the electron gun for cathode ray tube having a heater having a built-in heater and having a sleeve coated with a hot electron radiating material on top thereof to emit hot electrons and both outer cathodes provided on both sides thereof, A heat dissipation hole is formed in the main surface of the sleeve of the center cathode.
KR1019940018878A 1994-07-30 1994-07-30 Electron gun cathode structure for cathode ray tube KR0156494B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940018878A KR0156494B1 (en) 1994-07-30 1994-07-30 Electron gun cathode structure for cathode ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940018878A KR0156494B1 (en) 1994-07-30 1994-07-30 Electron gun cathode structure for cathode ray tube

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Publication Number Publication Date
KR960005708A KR960005708A (en) 1996-02-23
KR0156494B1 true KR0156494B1 (en) 1998-10-15

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