KR20030013540A - Electron gun for CRT - Google Patents

Electron gun for CRT Download PDF

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Publication number
KR20030013540A
KR20030013540A KR1020010047599A KR20010047599A KR20030013540A KR 20030013540 A KR20030013540 A KR 20030013540A KR 1020010047599 A KR1020010047599 A KR 1020010047599A KR 20010047599 A KR20010047599 A KR 20010047599A KR 20030013540 A KR20030013540 A KR 20030013540A
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KR
South Korea
Prior art keywords
electron gun
welding point
welding
electrode
central axis
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KR1020010047599A
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Korean (ko)
Inventor
윤희원
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엘지.필립스디스플레이(주)
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Priority to KR1020010047599A priority Critical patent/KR20030013540A/en
Publication of KR20030013540A publication Critical patent/KR20030013540A/en

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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
    • H01J29/46Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/467Control electrodes for flat display tubes, e.g. of the type covered by group H01J31/123
    • 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
    • H01J29/485Construction of the gun or of parts thereof
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00Details of cathode ray tubes or electron beam tubes
    • H01J2229/48Electron guns
    • H01J2229/4803Electrodes
    • H01J2229/481Focusing electrodes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00Details of cathode ray tubes or electron beam tubes
    • H01J2229/48Electron guns
    • H01J2229/4803Electrodes
    • H01J2229/4817Accelerating electrodes

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  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

PURPOSE: An electron gun for a cathode ray tube is provided to reduce the offset of electrode due to the superposition of a transformation by a welding heat and a welding portion by coupling two devices to each other at a first welding point on a first central axis and then welding another device at a second welding point on a second central axis. CONSTITUTION: Two devices are welded and fixed on a first central axis(21) to form a first welding point(23). Another device is welded to the two welded devices at a second central axis(22) located a position different to the first central axis(21), to thereby a second welding point(24). When the first and second welding points(23,24) are formed simultaneously, the devices are welded on the first and second central axes(21,22), respectively. The first and second central axes(21,22) have respectively welding points, each of which is located on a different position.

Description

음극선관용 전자총{Electron gun for CRT}Electron gun for cathode ray tube {Electron gun for CRT}

본 발명은 음극선관에 관한 것으로, 더욱 상세하게는 동일한 중심 축에 세 개 이상의 부품을 용접하여 하나의 전극을 구성함에 있어 발생되는 중복 용접에 의한 영향을 최소화하기 위한 음극선관용 전자총에 관한 것이다.The present invention relates to a cathode ray tube, and more particularly, to an electron gun for a cathode ray tube for minimizing the effects of overlapping welding generated in forming one electrode by welding three or more parts on the same central axis.

음극선관용 인라인형 전자총의 각 전극들은 음극(3)에서 발생된 전자빔이 일정한 세기의 형태로 제어되어서 형광면(15)에 도달할 수 있도록 하기 위해 전자빔(13)이 통과하는 경로에 대해 수직이 되게 서로 일정한 간격을 두고 위치하고 있다.The electrodes of the in-line electron gun for the cathode ray tube are mutually perpendicular to the path through which the electron beam 13 passes so that the electron beam generated from the cathode 3 can be controlled in a constant intensity to reach the fluorescent surface 15. Located at regular intervals.

도면을 참조하여 상세히 설명하면, 도 1에서와 같이 상호 독립된 3개의 음극(3)과 이 음극에서 일정거리 떨어져 배치되어 있는 세 개의 음극(3)의 공통격자인 제1전극(4)과 상기 제1전극에서 일정간격으로 배치된 제2전극(5)과 제3전극(6), 제4전극(7), 제5-1전극(8), 제5-1(9), 제6전극(9)의 순으로 구성되고, 제6전극(10) 상부에는 전자총의 상단부를 음극선관에 지지해주는 B.S.C(Bulb Space Connector)(11)가 부착된 실드컵(11)의 순서대로 구성된 인라인형 전자총으로 되고, 각 전자총의 컷오프(Cut-Off)전압이 반드시 같게 되기 위한 일정의 전류치를 얻기 위해 독립된 3개의 음극에 각각 다른 전압이 공급되고 있다.Referring to the drawings in detail, as shown in FIG. 1, the first electrode 4 and the first lattice, which are common lattice of three independent cathodes 3 and three cathodes 3 which are arranged at a predetermined distance from the cathode, are formed. The second electrode 5, the third electrode 6, the fourth electrode 7, the fifth-first electrode 8, the fifth-one (9), and the sixth electrode (arranged at a predetermined interval from one electrode) 9), and the sixth electrode 10 is an inline electron gun configured in the order of a shield cup 11 having a BSC (Bulb Space Connector) 11 to support the upper end of the electron gun to the cathode ray tube. Different voltages are supplied to three independent cathodes in order to obtain a constant current value for the cut-off voltage of each electron gun to be the same.

또, 이 전자총은 음극(3) 내부에 내장된 히터(2)가 스템핀(1)으로부터 전원을 공급받아 발열하게 되고 이 열에 의해 음극에서 전자가 방출되고, 이 전자는 제어전극인 제1전극(4)에 의해 전자빔(14)이 제어되고, 가속전극인 제2전극(5)에 의해 전자빔(14)이 가속되고, 주렌즈 형성전극인 제5-2전극(9)과 제6전극(10)을 통과하여 스크린(16) 내면에 설치된 새도우마스크(14)를 통과하여 형광면(16)에 충돌되어 발광을 시킨다.In addition, the electron gun generates a heat generated by the heater 2 embedded in the cathode 3 from the stem pin 1, and electrons are emitted from the cathode by the heat, and the electrons are the first electrodes serving as control electrodes. The electron beam 14 is controlled by (4), and the electron beam 14 is accelerated by the second electrode 5 which is an acceleration electrode, and the fifth-second electrode 9 and the sixth electrode (the main lens forming electrode) 10) passes through the shadow mask 14 installed on the inner surface of the screen 16 and impinges on the fluorescent surface 16 to emit light.

그리고, 전자총 외부에서 전자총에서 방출된 전자빔(14)을 스크린(16)전체로 편향해 주는 편향요크(12)가 음극선관의 외벽에 위치되어 있다.Then, a deflection yoke 12 for deflecting the electron beam 14 emitted from the electron gun outside the electron gun to the entire screen 16 is located on the outer wall of the cathode ray tube.

도 2는 음극선관용 전자총의 구조를 나타내는 것으로써, 복수개의 전극들이 일정간격을 가지고 복수개의 절연지지체(17)에 고정 배치되어 있으며 상기의 전극들 중 일부가 세 개 이상의 부품들이 중첩된 형태로써 하나의 전극으로 구성된다.2 shows a structure of an electron gun for a cathode ray tube, in which a plurality of electrodes are fixedly arranged at a plurality of insulating supports 17 with a predetermined interval, and some of the electrodes are formed by overlapping three or more components. It consists of an electrode.

도 3은 종래 전자총의 중첩된 전극부의 형상을 나타내는 것으로써, 중첩된 부품을 하나의 전극으로 구성하기 위하여 용접된 제1용접점(18) 및 제2용접점(19)이 하나의 중심 축(20)에 일치되도록 용접되어 있는 형태로 되어 있다.FIG. 3 shows the shape of the overlapping electrode portion of the conventional electron gun, wherein the welded first welding point 18 and the second welding point 19 are formed on one central axis. It is in a form welded to conform to 20).

음극에서 발생되는 전자는 음극선관 내부의 높은 진공상태에서 작동을 하게되고, 서로 다른 전압이 인가되는 복수개의 전극들로 구성된 전극을 지나면서 형상을 구성하고, 이를 음극선관의 형광면(16)에 충돌시켜 발광된 현상으로 나타나게 된다.The electrons generated in the cathode operate in a high vacuum state inside the cathode ray tube, form a shape while passing through an electrode composed of a plurality of electrodes to which different voltages are applied, and impinge on the fluorescent surface 16 of the cathode ray tube. The light emitting phenomenon appears.

이때, 음극선관용 전자총은 전자빔(14)이 통과하는 전극의 각 통과홀이 음극선관의 중심축과 평행한 축으로 축 중심이 일치하여야 하므로, 각각의 전극들이 개개로 중심이 일치할 수 있도록 제작되고 전체 전자총을 구성할 때에도 중심축이 일치하도록 하고 있다.In this case, the electron gun for the cathode ray tube should be coincident with the center of the axis through each axis of the electrode through which the electron beam 14 passes through the axis parallel to the center axis of the cathode ray tube, so that each of the electrodes can be individually aligned The central axis is also coincident when constructing the entire electron gun.

종래에는 여러 개의 전극들을 하나의 판상전극으로 구성 시에 제1용접점(18)과 제2용접점(19)의 중심이 하나의 중심 축에 같이 두고 있으므로, 제1용접점(18)이 형성된 후에 제2용접점(19) 형성 시, 제1용접점(18)에 의해 영향을 받은 부위에 제2용접점(19)이 위치하므로 한곳에 집중적으로 영향을 받게되어 제1용접점(18)과 제2용접점(19)에 변형을 가져다 주게 된다.Conventionally, since the centers of the first welding point 18 and the second welding point 19 are located at the same central axis when the plurality of electrodes are configured as one plate electrode, the first welding point 18 is formed. Later, when the second welding point 19 is formed, the second welding point 19 is located at the site affected by the first welding point 18 so that the first welding point 18 and the first welding point 18 are concentrated. The second welding point 19 causes deformation.

또한, 상기 제1용접점(18)과 제2용접점(19)을 동시에 형성할 때 한곳에 영향을 집중하므로 변형이 발생하게 된다.In addition, when forming the first welding point 18 and the second welding point 19 at the same time, since the effect is concentrated in one place, deformation occurs.

따라서, 하나의 완성된 전극을 구성할 때, 전극의 중심을 일치시키기가 곤란하고 전자총의 전체 얼라이먼트(Alignment) 특성에도 나쁜 영향을 미치게 되어 결과적으로 음극선관의 해상도 특성을 저하시키는 문제점이 있었다.Therefore, when constituting one completed electrode, it is difficult to match the center of the electrode and adversely affect the overall alignment characteristics of the electron gun, resulting in a problem of lowering the resolution characteristics of the cathode ray tube.

그리고, 동일선상에 용접점을 두게되면 제1용접점(18)이 형성된 자리와 동일 중심 축(20)에 제2용접점(19)을 형성하므로, 하나의 축에 용접의 중첩이 발생되어 제1용접점(18)과 제2용접점(19)에 틈새가 발생될 뿐만 아니라, 용접에 의한 피로도가 집중되므로 전극의 얼라이먼트(Alignment)가 나빠지게 되고, 결국 전자총의 전체 얼라이먼트(Alignment)특성도 나빠지게 되어 전자총의 전극의 생산성뿐만 아니라 음극선관의 해상도를 저해시켜 음극선관의 신뢰도를 저하시키는 문제점이 있었다.When the welding point is placed on the same line, the second welding point 19 is formed on the same central axis 20 as the position where the first welding point 18 is formed. Not only a gap is generated in the first welding point 18 and the second welding point 19, but also fatigue is concentrated, so that alignment of the electrode becomes worse, and thus, the overall alignment characteristic of the electron gun is also reduced. There is a problem in that the degradation of the cathode ray tube by deteriorating the resolution of the cathode ray tube as well as the productivity of the electrode of the electron gun was bad.

따라서, 본 발명의 목적은 종래의 문제점을 해결하기 위한 것으로, 세 개이상의 부품을 용접하여 하나의 전극을 구성함에 있어서, 용접부의 상호간섭에 의한영향에 의해 용접 후 전극의 어긋남 발생을 방지하여 생산성 및 음극선관의 해상도 특성을 향상시키는데 그 목적이 있다Accordingly, an object of the present invention is to solve the conventional problems, in the construction of one electrode by welding three or more parts, the productivity of the electrode after welding by preventing the interference caused by the mutual interference of the welding parts And to improve the resolution characteristics of the cathode ray tube.

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

도 2는 음극선관용 전자총의 구조를 나타낸 도면.2 is a view showing the structure of an electron gun for a cathode ray tube.

도 3은 종래 전자총의 중첩된 전극부의 형상을 나타낸 도면.Figure 3 is a view showing the shape of the overlapping electrode of the conventional electron gun.

도 4의 (a)는 본 발명에 따른 전자총의 중첩된 전극부의 형상을 나타낸 도면이고,4 (a) is a view showing the shape of the overlapping electrode of the electron gun according to the present invention,

(b)는 본 발명의 다른 실시예에 따른 전자총의 중첩된 전극부의 형상을 나타낸 도면.(b) is a view showing the shape of the overlapping electrode portion of the electron gun according to another embodiment of the present invention.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

14:전자빔 17:절연체14: electron beam 17: insulator

18,23:제1용접점 19,24:제2용접점18,23: 1st welding point 19,24: 2nd welding point

20:중심축 21:제1중심축20: center axis 21: first center axis

22:제2중심축22: second center axis

상기한 바와 같은 목적을 달성하기 위한 본 발명은, 형광체 스크린을 향해 전자빔을 방출하는 음극과 전자빔을 제어, 가속 및 집속시키는 다수의 전극들을 포함하는 음극선관용 전자총에 있어서, 상기 전자총은 세 개 이상의 부품들이 결합되어 형성된 전극을 포함하며; 상기 세 개 이상의 부품으로 형성된 전극은 두 개의 부품이 용접된 제1용접점과 상기 두개의 부품 중 어느 하나와 나머지 부품이 용접된 제2용접점이 서로 다른 축 상에 위치하는 것을 특징으로 한다.According to an aspect of the present invention, there is provided an electron gun for a cathode ray tube including a cathode for emitting an electron beam toward a phosphor screen and a plurality of electrodes for controlling, accelerating, and focusing the electron beam, wherein the electron gun comprises three or more components. Includes an electrode formed by combining; The electrode formed of the three or more components is characterized in that the first welding point is welded two parts and the second welding point is welded one of the two parts and the other parts are located on different axes.

이하에서는 상기의 목적을 달성하는 본 발명을 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, the present invention to achieve the above object will be described in detail.

본 발명은 도 1에 도시된 음극선관용 전자총의 전체적인 구성이나 결선구조의 기본구조는 동일하게 구성하고, 세 개 이상의 부품이 용접되어 하나의 판상 전극으로 구성 될 때, 용접되는 중심축의 위치를 달리하는 것에 관한 것이다.The present invention is the same as the overall structure of the electron gun for the cathode ray tube shown in Figure 1 or the basic structure of the wiring structure, and when three or more parts are welded to constitute a single plate electrode, the position of the central axis to be welded is different It's about things.

도 4는 본 발명에 의한 전자총의 중첩된 전극부의 형상을 나타낸 것이다.Figure 4 shows the shape of the overlapping electrode portion of the electron gun according to the present invention.

도 4의 (a)에 도시된 바와 같이, 먼저 제1중심축(21)에 두 부품(25a, 25b)을 용접고정 하여 제1용접점(23)을 형성한다.As shown in FIG. 4A, first, two parts 25a and 25b are welded to the first central shaft 21 to form a first welding point 23.

그리고, 상기 용접된 두 부품(25a, 25b)에 나머지 부품(25b)을 제1중심축(21)과는 다른 위치에 있는 제2중심축(22)에서 용접하여 제2용접점(24)을 형성한다.In addition, the second welding point 24 is welded to the two welded parts 25a and 25b by welding the remaining parts 25b on the second central axis 22 at a position different from the first central axis 21. Form.

또한, 상기 제1 용접점(23) 및 제 2용접점(24)을 동시에 형성할 때도 각기 다른 제 1중심축(21) 및 제 2중심축(22)에 용접한다.Also, when the first welding point 23 and the second welding point 24 are simultaneously formed, the first welding point 23 and the second welding point 24 are also welded to different first and second center axes 21 and 22.

도 4의 (b)는 본 발명의 다른 실시 예에 따른 전자총의 중첩된 전극부의 형상을 나타낸 도면이다.4 (b) is a view showing the shape of the overlapping electrode portion of the electron gun according to another embodiment of the present invention.

도 4의 (b)에서 보듯이, 제1중심축(21) 및 제2중심축(22)은 각각 다른 용접점을 가지면서 위치를 달리 할 수 있다.As shown in (b) of FIG. 4, the first central axis 21 and the second central axis 22 may have different welding points and different positions.

그리고, 본 발명에서 판상전극의 예를 설명하였으나, 판상전극이 아닌 전극들간의 용접도 본 발명의 범주에 포함된다.In addition, although the example of the plate electrode has been described in the present invention, welding between the electrodes other than the plate electrode is included in the scope of the present invention.

따라서, 본 발명에 의하면 , 상호 인접되고 중첩된 전극들을 가지는 음극선관용 전자총에서 서로 중첩된 전극을 구성함에 있어서, 두 개의 부품을 먼저 제1중심축에 용접점을 가지도록 구성한 후 상기 용접된 부품 중 어느 하나와 나머지 부품을 용접시 제1중심축과는 다른축인 제2중심축에 제 2용접점을 형성하므로써, 전극에 용접된 용접의 중심이 상호 다르게 구성하여 전극간의 틈새발생 및 전극상호간의 어긋남을 방지하여 얼라이먼트(Alignment)특성이 우수한 전자총을 제공하여 결과적으로 음극선관의 해상도 특성을 향상시켜 음극선관의 신뢰도를 향상시킬 수 있는 효과가 있다.Therefore, according to the present invention, in configuring the electrodes overlapped with each other in the cathode ray tube electron gun having adjacent and overlapping electrodes, two parts are first configured to have a welding point on the first central axis, and then among the welded parts When welding one and the other parts, the second welding point is formed on the second central axis, which is different from the first central axis, so that the centers of the welds welded to the electrodes are different from each other, so that the gap between the electrodes is generated and By preventing misalignment, an electron gun having excellent alignment characteristics can be provided, and as a result, the resolution characteristics of the cathode ray tube can be improved, thereby improving the reliability of the cathode ray tube.

Claims (1)

형광체 스크린을 향해 전자빔을 방출하는 음극과 전자빔을 제어, 가속 및 집속시키는 다수의 전극들을 포함하는 음극선관용 전자총에 있어서,An electron gun for a cathode ray tube comprising a cathode for emitting an electron beam toward a phosphor screen and a plurality of electrodes for controlling, accelerating and focusing the electron beam, 상기 전자총은 세 개 이상의 부품들이 결합되어 형성된 전극을 포함하며;The electron gun comprises an electrode formed by combining three or more components; 상기 세 개 이상의 부품으로 형성된 전극은 두 개의 부품이 용접된 제1용접점과 상기 두 개의 부품 중 어느 하나와 나머지 부품이 용접된 제2용접점이 서로 다른 축 상에 위치하는 것을 특징으로 하는 음극선관용 전자총The electrode formed of the three or more components for the cathode ray tube, characterized in that the first welding point welded two parts and the second welding point welded one of the two parts and the other parts are located on different axes. Electron gun
KR1020010047599A 2001-08-08 2001-08-08 Electron gun for CRT KR20030013540A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63307646A (en) * 1987-06-08 1988-12-15 Hitachi Ltd Electrode structure member of electron gun
JPH09219941A (en) * 1996-02-13 1997-08-19 Hitachi Ltd Rotating electric machine
JPH10125256A (en) * 1996-10-25 1998-05-15 Nec Kansai Ltd Electron gun, and its manufacture, support member frame, and jig
JPH11233042A (en) * 1998-02-18 1999-08-27 Mitsubishi Electric Corp Electron gun for cathode ray tube
KR20010023987A (en) * 1997-09-16 2001-03-26 가나이 쓰토무 Color cathode ray tube

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63307646A (en) * 1987-06-08 1988-12-15 Hitachi Ltd Electrode structure member of electron gun
JPH09219941A (en) * 1996-02-13 1997-08-19 Hitachi Ltd Rotating electric machine
JPH10125256A (en) * 1996-10-25 1998-05-15 Nec Kansai Ltd Electron gun, and its manufacture, support member frame, and jig
KR20010023987A (en) * 1997-09-16 2001-03-26 가나이 쓰토무 Color cathode ray tube
JPH11233042A (en) * 1998-02-18 1999-08-27 Mitsubishi Electric Corp Electron gun for cathode ray tube

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