KR940001173Y1 - Electron gun electrode for cathode-ray tube - Google Patents

Electron gun electrode for cathode-ray tube Download PDF

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Publication number
KR940001173Y1
KR940001173Y1 KR2019910008299U KR910008299U KR940001173Y1 KR 940001173 Y1 KR940001173 Y1 KR 940001173Y1 KR 2019910008299 U KR2019910008299 U KR 2019910008299U KR 910008299 U KR910008299 U KR 910008299U KR 940001173 Y1 KR940001173 Y1 KR 940001173Y1
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electrode
holes
electron gun
electron beam
auxiliary electrode
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KR2019910008299U
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KR930001480U (en
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이차록
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삼성전관 주식회사
김정배
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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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48—Electron guns
    • H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/48—Electron guns
    • H01J2229/50—Plurality of guns or beams
    • H01J2229/502—Three beam guns, e.g. for colour CRTs
    • 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
    • H01J29/48—Electron guns
    • H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
    • H01J29/503—Three or more guns, the axes of which lay in a common plane

Abstract

내용 없음.No content.

Description

음극선관용 전자총 전극Electron gun electrode for cathode ray tube

제1도는 본 고안의 일실시례인 전극과 보조건극이 분리된 상태의 사시도.1 is a perspective view of a state in which an electrode and an auxiliary electrode separated from one embodiment of the present invention.

제2도는 본 고안의 일실시례로서 전극에 보조전극이 내장되어 고정된 상태의 단면도이다.2 is a cross-sectional view of a state in which an auxiliary electrode is built and fixed as an embodiment of the present invention.

제3도는 종래의 전자총의 일례를 개략적으로 나타낸 정단면도이다.3 is a front sectional view schematically showing an example of a conventional electron gun.

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

1 : 전극 2 : 보조전극1 electrode 2 auxiliary electrode

R, G, B : 전극 통과공 R',G',B' : 보조전극 통과공R, G, B: Electrode through hole R ', G', B ': Auxiliary electrode through hole

본 고안은 전자총에 관한 것으로서, 상세하게는 전극의 구조를 개선하여 포커스특성을 향상시킨 음극선관용 전자총 전극에 관한 것이다.The present invention relates to an electron gun, and more particularly, to an electron gun electrode for a cathode ray tube having improved focusing characteristics by improving the structure of the electrode.

전자총은 칼라 음극선관의 네크부에 삽입 고정되어, R,G,B로 형성된 세 개의 전자비임을 방사하면, 비임은 외부의 평향자계에 의해 편향되어 페이스 내면에 R,G,B의 형광패턴으로 형성된 형광면에 비임이 각각 충돌되어 소정의 화상을 재현하게 된다.The electron gun is inserted into and fixed to the neck portion of the color cathode ray tube, and when three electron beams formed of R, G and B are emitted, the beam is deflected by an external deflection magnetic field to form a fluorescent pattern of R, G, B on the inner surface of the face. The beams collide with each of the formed fluorescent surfaces to reproduce a predetermined image.

종래의 인라인형 전자총을 첨부한 제3도를 참고하여 설명한다. 내부에 히이터가 설치된 3개의 음극지지구(A)에는 그 상면에 음극(B)을 부착하여 각각의 음극(B)에서 전자비임을 발사하게 하고, 음극지지구(A)의 상부에는 전자비임을 각각 제어 및 가속시키는 제1전극(C)과 제2전극(D), 그리고 주렌즈를 구성하는 제3전극(E) 및 제4전극(F)을 일렬로 배설하여 비이드유리(I)에 의해 고정 지지되고 있다. 전기한 제3 전극(E)의 상부부재(E1)와 제4 전극(F)에는 버링부(H)를 병설하여 등전위면 간섭을 차폐시키고 있다.A description will be given with reference to FIG. 3 with the conventional inline electron gun attached. The cathodes B are attached to the upper surface of the cathode support A to which the heaters are installed. The electron beams are emitted from the cathodes B, and the electron beams are provided on the cathode support A. The first electrode C and the second electrode D, which are controlled and accelerated, and the third electrode E and the fourth electrode F, which constitute the main lens, are arranged in a row and placed on the bead glass I. It is fixed and supported by. The upper member E1 and the fourth electrode F of the third electrode E described above are provided with a burring portion H to shield the equipotential surface interference.

이와 같이 구성되는 전자총에서 전자비임의 수렴각도를 결정하기 위하여 음극 (B)과 제1 전극(C), 제2 전극(D), 제3 전극(E)의 전자비임 통과공(G)은 동축으로 배열되어 있고, 이 동축에 대하여 제4 전극(F)의 중앙부 통과공(G)과 버링부(H)는 동축이나 양측의 통과공(G1)과 버링부(H1)는 일정량 만큼 외측으로 편심되게 배열되어 있다. 따라서 제3 전극(E) 및 제4 전극(F)의 중앙부 통과공(G)과 버링부(H)를 통과하는 전자비임은 등전위면 형태가 대칭되어 접속만 되면서 직진하게 되나, 외측의 통과공 (G1)과 버링부(H1)는 외측으로 편심되어 있어 전자비임의 집속과 동시에 수렴되는 특성을 가지게 된다.In order to determine the convergence angle of the electron beam in the electron gun configured as described above, the electron beam through hole G of the cathode B, the first electrode C, the second electrode D, and the third electrode E is coaxial. The central through-hole G and the burring portion H of the fourth electrode F are coaxial or lateral to the coaxial axis, and the through-hole G1 and the burring portion H1 on both sides are eccentrically outwardly. Are arranged. Therefore, the electron beams passing through the center portion through hole G and the burring portion H of the third electrode E and the fourth electrode F go straight while being symmetrically connected to each other. G1 and the burring portion H1 are eccentric to the outside and have a characteristic of convergence at the same time as the focusing of the electron beam.

상기한 제3 전극(E)의 상부부재(E1)와 제4 전극(F)의 통공부(G), (G1)와 일치된 크기의 버링부(H),(H1)를 형성하는 이유는 주렌즈를 형성하는 세 개의 전자비임 통과공(G),(G1)의 측벽거리가 비대칭이기 때문에 통과공(G), (G1)의 부근에서 전계가 불균일하게 되어 주렌즈의 비점수차를 일으켜서 포커스특성이 불량하게 되는 것을 방지하기 위함이다.The reason why the burrs (H) and (H1) having the same size as the upper portion (E1) of the third electrode (E) and the through hole (G), (G1) of the fourth electrode (F) is formed Since the sidewall distances of the three electron beam through holes G and G1 forming the main lens are asymmetrical, the electric field becomes nonuniform in the vicinity of the through holes G and G1, causing astigmatism of the main lens and causing focus. This is to prevent the property from becoming poor.

상기한 버링부(H), (H1)는 전극(E1), (F)의 전자비임 통과공(G), (G1)을 형성할 때, 전극판재를 내측으로 절곡시켜 만들고 있다. 버링부(H), (H1)의 높이는 메인렌즈의 회전대칭성의 열화를 방지하기 위해서 통과공(G), (G1)의 깊이 즉, (H), (H1) 높이를 ″h″라 하고, 통과공(G), (G1) 직경를 ″d″라고 했을 때 h/d의 비가 0.5 이상으로 요구되고 있으나 스테인레스 판재를 냉간 가공하여 버링부(H), (H1)를 만들고 있기 때문에 실질적인 비는 0.3 이하로 나타나고 있다.The above-mentioned burring portions H and H1 are formed by bending the electrode plate member inward when forming the electron beam passing holes G and G1 of the electrodes E1 and F. The heights of the burring portions H and H1 are referred to as ″ h ″ for the depths of the through holes G and G1, that is, the heights H and H1 in order to prevent deterioration of rotational symmetry of the main lens. When the diameter of the through hole (G) and (G1) is ″ d ″, the ratio of h / d is required to be 0.5 or more, but the actual ratio is 0.3 because the stainless steel sheet is cold worked to form burring portions (H) and (H1). It is shown below.

그리고 포커스특성을 향상시킨느 수단으로서 메인렌즈 통과공(G), (G1)의 직경이 큰 것이 필요하지만, 두께가 얇은 비자성금속, 예를들면 스테인레스 강판을 가공해서 전자비임 통과공(G), (G1)의 직경이 큰 것이 필요하지만, 두께가 얇은 비자성금속, 예를들면 스테인레스 강판을 가공해서 전자비임 통과공(G),(G1)과 버링부(H),(H1)를 형성하기 때문에 통과공(G), (G1)을 크게 하는데는 한계가 있다.As a means for improving the focus characteristic, the main lens through holes G and G1 need to have a large diameter, but a thin non-magnetic metal such as a stainless steel sheet can be processed to pass through the electron beam through holes G. , (G1) is required to have a large diameter, but a thin non-magnetic metal such as a stainless steel sheet is processed to form electron beam through holes (G), (G1), burring portions (H), and (H1). Therefore, there is a limit to increasing the through holes G and G1.

또한 상기한 전극(E1),(F)을 전자비임 통과공(G), (G1)과 버링부(H), (H1)는 프레스 가공으로 형성하기 때문에 통과공(G), (G1)의 진원도가 정밀하지 못하게 되고, 그것에 의해서 주렌즈의 전계가 찌그러짐으로써 전자비임의 비점수차가 생겨 포커스특성이 손상되는 문제가 발생된다.In addition, since the above-mentioned electrodes E1 and F are formed by the press beam through holes G, G1 and the burring portions H and H1, the through holes G and G1 The roundness becomes inaccurate, whereby the electric field of the main lens is distorted, thereby causing astigmatism of the electron beam, thereby causing a problem of deteriorating the focus characteristic.

본 고안에서는 상기한 제반 문제점을 해소하기 위해 안출한 것으로서, 전자비임 통과공의 직경과 버링부의 높이를 소망하는 크기로 만듬과 동시에 진원도가 양호한 음극선관용 전자총 전극을 제공하는데 목적이 있다.The present invention has been made to solve the above-mentioned problems, it is an object to provide a cathode ray tube electron gun electrode having a good roundness while making the diameter of the electron beam passing hole and the height of the burring portion desired.

상기 목적에 따라 전자총의 주렌즈를 형성하는 제3 전극 또는 제4 전극에서 전자총의 주렌즈계를 형성하기 위해 전자비임 통과공이 뚫어진 제3 전극 또는 제4 전극의 버링부 위치에, 소정의 두께를 갖으며 상기한 전극에 형성된 전자비임 통과공과 동일한 직경의 전자비임 통과공이 뚫려진 보조전극이 동일 중심선상에 배치되어 이루어진 것에 특징이 있다.According to the above object, the third electrode or the fourth electrode forming the main lens of the electron gun has a predetermined thickness at the burring portion of the third electrode or the fourth electrode through which the electron beam passing hole is formed to form the main lens system of the electron gun. The auxiliary electrode having the same electron beam through hole of the same diameter as the electron beam through hole formed in the electrode is disposed on the same center line.

이하 본 고안의 이해를 돕기 위해 첨부한 도면을 참고하여 상세하게 설명하면 다음과 같다.Hereinafter, described in detail with reference to the accompanying drawings to help understand the present invention.

제1도는 본 고안의 일실시례로서 전극(1)과 보조전극(2)이 분리된 상태의 사시도이고, 제2도는 본 고안의 일실시례로서 전극(1)에 보조전극(2)에 내장되어 용접고정된 상태의 단면도이다.1 is a perspective view of a state in which the electrode 1 and the auxiliary electrode 2 are separated as an embodiment of the present invention, Figure 2 is embedded in the auxiliary electrode 2 to the electrode 1 as an embodiment of the present invention It is sectional drawing of the state fixed by welding.

전자총에서 버링부가 형성되는 전극(1)은 전자비임 통과공만 형성되고, 소정의 두께를 갖는 보조전극(2)은 상기한 전극(1)에 조립될 때, 전극에 형성된 세개의 전자비임 통과공(R),(G),(B)과 동일한 위치와 크기의 통과공 (R'),(G'),(B')이 형성되어서 전극(1)에 내장되어 용접고정된다.The electrode 1 in which the burring portion is formed in the electron gun is formed only with an electron beam through hole, and when the auxiliary electrode 2 having a predetermined thickness is assembled to the electrode 1, three electron beam through holes formed in the electrode are formed. Through-holes R ', G', and B 'having the same position and size as those of (R), (G) and (B) are formed, which are embedded in the electrode 1 and fixed by welding.

전극(1)은 소정의 형상과 치수를 갖도록 타발 및 포밍 가공하고, 또한 세개의 전자비임 통과공(R),(G),(B)도 소망하는 직경을 갖도록 타발가공 한다.The electrode 1 is punched and formed to have a predetermined shape and dimensions, and the three electron beam through holes R, G, and B are also punched to have a desired diameter.

보조전극(2)은 전기한 전극(1)과 같은 위치에 동일한 크기의 통과공 (R'), (G'),(B')을 기계가공 등의 방법에 의해서 만들며, 보조전극(2)이 전극(1)에 삽입되어서 용접고정 되면, 보조전극(2) 통과공 (R'),(G'),(B')의 높이는 소망하는 버링부의 높이가 같다.The auxiliary electrode 2 makes through holes R ', G', and B 'of the same size at the same position as the electrode 1, by machining or the like, and the auxiliary electrode 2 When inserted into the electrode 1 and fixed by welding, the heights of the through holes R ', (G') and (B ') of the auxiliary electrode 2 are equal in height to the desired burring portion.

따라서 상기한 보조전극(2)의 두께는 버링부의 높이를 고려하여 정하고, 전극 (1)에 보조전극(2)이 내장되면 버링부의 높이에 해당되는 보조전극의 두께와 전자비임 통과공의 비는 1/2이상이 된다. 또한 보조전극(2)은 그 외형을 전극(1)의 내면과 동일하게 만들어서 전극(1)에 삽입시키면 정밀한 조립성을 갖게 되며, 용접 고정하면 전극(1)의 통과공 (R),(G),(B)과 보조전극(2)의 통과공 (R'),(G'),(B')은 동일한 중심선에 있게 한다.Therefore, the thickness of the auxiliary electrode 2 is determined in consideration of the height of the burring part, and when the auxiliary electrode 2 is built in the electrode 1, the thickness of the auxiliary electrode corresponding to the height of the burring part and the electron beam passing hole are More than half. In addition, the auxiliary electrode 2 has the same shape as the inner surface of the electrode 1 and is inserted into the electrode 1 to have precise assemblability, and when welded and fixed, the through holes R and G of the electrode 1 are fixed. ), (B) and the through holes (R '), (G'), (B ') of the auxiliary electrode (2) are in the same center line.

상기한 바와 같이 보조전극(2)의 두께는 전극(1)에 뚫려진 직경의 1/2이상으로 만든다. 따라서 버링부에 해당하는 보조전극(2)의 두께와 통과공 (R),(G),(B) 직경의 비는 0.5 이상의 조건을 만족시킨다.As described above, the thickness of the auxiliary electrode 2 is made to be 1/2 or more of the diameter drilled in the electrode 1. Therefore, the ratio of the thickness of the auxiliary electrode 2 corresponding to the burring portion and the diameters of the through holes R, G, and B satisfies 0.5 or more.

또한 전자총의 포커스특성을 향상시키는 수단의 하나로서 메인렌즈 통과공(R), (G), (B)의 직경이 큰 것이 요구되는데, 종래에는 얇은 판재에 통과공 (R),(G),(B)과 버링부를 만들어야 되기 때문에 통과공 (R),(G),(B)을 크게 하는데 한계가 있었지만, 본 고안에서는 보조전극(2)을 별도로 만들어서 버링부의 기능을 갖게하기 때문에 전극(1)에서 전자비임 통과공 (R),(G),(B)을 최대한으로 크게 할 수가 있다.In addition, as one of means for improving the focus characteristic of the electron gun, it is required to have a large diameter of the main lens through holes R, G, and B. Conventionally, the through holes R, G, Since the (B) and the burring part must be made, there is a limit to increasing the through holes (R), (G), and (B). However, in the present invention, since the auxiliary electrode 2 is made separately to have the function of the burring part, the electrode 1 ), The electron beam passing holes (R), (G) and (B) can be made as large as possible.

그리고 전극(1)에는 전자비임 통과공 (R),(G),(B)만 형성되고, 보조전극(2)은 일반적인 기계가공에 의해서 전자비임 통과공 (R'),(G'),(B')을 형성하므로 전원도 정밀도를 크게 향상시킬 수가 있다.In the electrode 1, only electron beam through holes R, G, and B are formed, and the auxiliary electrode 2 has electron beam through holes R ', G', Since (B ') is formed, the power supply can also greatly improve the accuracy.

이상에서 설명한 바와 같이 본 고안에 의하면 전극(1)의 버링부는 보조전극(2)을 별도로 삽입고정하여 만들므로써 가공의 정밀도를 크게 높일 수가 있고, 전극(1)의 판재 두께에 구애받지 않고, 버링부의 높이와 전자비임 통과공 (R),(G),(B)의 직경을 소망하는 크기로 할 수가 있으므로 주렌즈의 회전대칭성의 열화가 방지됨과 동시에 전자총의 포커스특성이 향상되는 잇점을 갖는다.As described above, according to the present invention, the burring portion of the electrode 1 may be made by inserting and fixing the auxiliary electrode 2 separately, thereby greatly increasing the precision of the processing, and regardless of the thickness of the plate of the electrode 1, Since the negative height and the diameter of the electron beam passing holes R, G, and B can be the desired size, the rotational symmetry of the main lens is prevented from deteriorating and the focus characteristic of the electron gun is improved.

Claims (1)

음극과 다수의 전극이 비이드 유리에 고정되어 이루어진 전자총에 있어서, 전자총의 주렌즈계를 형성하기 위해 전자비임 통과공 (R),(G),(B)이 뚫어진 제3,4 전극의 버링부 위치에, 소정의 두께를 갖으며 상기한 전극들에 형성된 전자비임 통과공과 동일한 직경의 전자비임 통과공 (R'),(G'),(B')이 뚫려진 보조전극(2)을 동일 중심선 상에 배치하되, 상기한 보조전극의 두께는 비임 통과공 (R),(G),(B) 직경의 1/2 이상이 되도록 함을 특징으로 하는 음극선관용 전자총.In an electron gun in which a cathode and a plurality of electrodes are fixed to bead glass, burring portions of third and fourth electrodes in which electron beam through holes R, G, and B are drilled to form a main lens system of the electron gun. At the position, the auxiliary electrode 2 having the predetermined thickness and having the same electron beam passing holes R ', (G') and (B ') having the same diameter as the electron beam passing holes formed in the electrodes are the same. It is disposed on the center line, the thickness of the auxiliary electrode is a cathode ray tube electron gun, characterized in that the beam through hole (R), (G), (B) to be at least 1/2 of the diameter.
KR2019910008299U 1991-06-05 1991-06-05 Electron gun electrode for cathode-ray tube KR940001173Y1 (en)

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