KR900001499B1 - Electron gun of color crt - Google Patents

Electron gun of color crt Download PDF

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KR900001499B1
KR900001499B1 KR1019850002235A KR850002235A KR900001499B1 KR 900001499 B1 KR900001499 B1 KR 900001499B1 KR 1019850002235 A KR1019850002235 A KR 1019850002235A KR 850002235 A KR850002235 A KR 850002235A KR 900001499 B1 KR900001499 B1 KR 900001499B1
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South Korea
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electron beam
shaped
hole
plate
long
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KR1019850002235A
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Korean (ko)
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KR850007534A (en
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유끼히로 이즈미다
히데마사 고모로
카즈오 마지마
아기오 야마구찌
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가부시기가이샤 히다찌세이사구쇼
미따 가쯔시게
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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
    • H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
    • 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
    • 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
    • H01J2229/4844—Electron guns characterised by beam passing apertures or combinations
    • H01J2229/4848—Aperture shape as viewed along beam axis
    • H01J2229/4858—Aperture shape as viewed along beam axis parallelogram
    • H01J2229/4865—Aperture shape as viewed along beam axis parallelogram rectangle
    • H01J2229/4868—Aperture shape as viewed along beam axis parallelogram rectangle with rounded end or ends
    • 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
    • H01J2229/4844—Electron guns characterised by beam passing apertures or combinations
    • H01J2229/4848—Aperture shape as viewed along beam axis
    • H01J2229/4872—Aperture shape as viewed along beam axis circular
    • 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
    • H01J2229/4844—Electron guns characterised by beam passing apertures or combinations
    • H01J2229/4848—Aperture shape as viewed along beam axis
    • H01J2229/4875—Aperture shape as viewed along beam axis oval
    • 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
    • H01J2229/4844—Electron guns characterised by beam passing apertures or combinations
    • H01J2229/4848—Aperture shape as viewed along beam axis
    • H01J2229/4879—Aperture shape as viewed along beam axis non-symmetric about field scanning axis
    • 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
    • H01J2229/4844—Electron guns characterised by beam passing apertures or combinations
    • H01J2229/4848—Aperture shape as viewed along beam axis
    • H01J2229/4896—Aperture shape as viewed along beam axis complex and not provided for

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  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

Each of a cathode, a control grid, an accelerating grid, a focus grid and an anode of the gun has three apertures aligned in line. The focus grid and anode are made of elongated plates serving as main lens electrodes, with the apertures in these plates constituting a main lens assembly. The three apertures of each plate comprise a central aperture defined by two curves arcuated outwards, and two side apertures defined by a second curve as an inner half arcuated inward and a third curve as an outer half arcuated outwards.

Description

컬러 수상관용 전자총Color Award Tube Gun

제1도는 종래의 인라인형 전자총의 구조 및 동작상태를 표시한 요부 단면도.1 is a sectional view showing the main parts of the structure and operation state of a conventional inline electron gun.

제2도는 종래의 상부 집속전극을 표시한 요부평면도.2 is a plan view showing main parts of a conventional upper focusing electrode.

제3a, b도는 본 발명에 의한 컬러 수상관용 전자총에 관한 상부 집속전극을 표시한 요부 평면도 및 그 요부단면도.3A and 3B are a plan view of a main part of the upper focusing electrode relating to the electron gun for color image tube according to the present invention, and a sectional view of the main part thereof;

제4도는 본 발명에 의한 컬러 수상관용 전자총의 일실시예를 표시한 요부단면 구성도.Figure 4 is a sectional view showing the main portion of an embodiment of the electron gun for a color water tube according to the present invention.

제5도는 제4도에 표시한 양극의 평면도 및 그 단면도.5 is a plan view and a sectional view of the anode shown in FIG.

제6a, b도 및 제7a, b도는 본 발명에 관한 상부집속전극의 다른 실시예를 표시한 요부평면도 및 그 단면도.6A, 6B and 7A, 7B are a plan view of a principal part of another embodiment of the upper focusing electrode according to the present invention, and a cross-sectional view thereof;

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

50, 53, 56 : 상부집속전극 51, 54, 57 : 장원형판형상체50, 53, 56: upper focusing electrode 51, 54, 57: rectangular plate shape

51A, 51B, 51C, 54A, 54B, 54C, 57A, 57B, 57C : 전자비임 통과구멍51A, 51B, 51C, 54A, 54B, 54C, 57A, 57B, 57C: Electron beam through hole

52, 55, 58 : 장원링판형상체 52A, 55A, 58A : 장원구멍52, 55, 58: long ring-shaped plate 52A, 55A, 58A: long hole

54C : 홈 60 : 양극54C: Groove 60: Anode

61: 장원형판형상체 61A, 61B, 61C : 전자비임 통과구멍61: rectangular plate-shaped body 61A, 61B, 61C: electron beam through hole

62 : 장원링판형상체 62A : 장원구멍62: long ring plate shape 62A: long hole

500, 600 : 보조전극 501, 601 : 지지체500, 600: auxiliary electrode 501, 601: support

본 발명은 컬러 수상관용 전자총, 특히 포커스 특성을 개량한 컬러 수상관용 인라인형 전자총에 관한 것이다.TECHNICAL FIELD This invention relates to the color water tube electron gun, especially the inline type electron gun for color water tubes which improved the focus characteristic.

일반적으로 컬러수상용 전자총의 주렌즈 구멍은 포커스 특성에 크게 영향을 주며, 호적한 포커스 특성을 얻기 위해서는 주렌즈 구경을 가능한 한 크게하고 또 전자총의 조립공정중의 변형을 피하기 위해 기계적인 강도를 확보하는 일이 바람직하다.In general, the main lens hole of the color receiving electron gun greatly affects the focus characteristics, and in order to obtain suitable focus characteristics, the main lens aperture is made as large as possible, and mechanical strength is secured to avoid deformation during the assembly process of the electron gun. It is desirable to do.

제1도는 종래의 바이퍼텐셜 집속방식의 인라인형 전자총의 일례를 표시한 요부단면구성도이다. 동 도면에서(1A), (1B), (1C)는 각각 3개의 전자비임을 꼭대기면으로부터 방사하는 음극, (2)는 전자비임을 제어하는 제어전극, (3)은 전자비임을 가속시키는 가속전극(4)는 전자비임을 집속시키는 하부집속전극이며, (2A), (2B), (2C), (3A), (3B), (3C) 및 (4A), (4B), (4C)는 각각 3개의 전자비임의 전자비임 통과구멍이다. (5)는 상부집속전극, (6)은 양극이며, 이 상부집속전극(5)과 양극(6)은 각각의 저면(底面)에 대향해서 형성된 3개의 (5A), (5B), (5C)과 (6A), (6B), (6C)으로 3개의 전자비임에 대응하는 3개의 주렌즈를 형성하고 있다.1 is a sectional view showing the main parts of an example of a conventional in-line electron gun of a bipotential focusing system. In the figure, 1A, 1B, and 1C are cathodes that emit three electron beams from the top surface, 2 is a control electrode for controlling the electron beam, and 3 is an acceleration to accelerate the electron beam. The electrode 4 is a lower focusing electrode that focuses an electron beam, and includes (2A), (2B), (2C), (3A), (3B), (3C) and (4A), (4B) and (4C). Are electron beam through holes of three electron beams, respectively. (5) is the upper focusing electrode, (6) is the anode, and the upper focusing electrode (5) and the anode (6) are formed of three (5A), (5B), (5C) formed to face each bottom surface. ), (6A), (6B), and (6C) form three main lenses corresponding to three electron beams.

이 경우, 전자총의 일반적인 작동전압은 제어전극(2)에 OV, 가속전극(3)에 약 700V, 하부집속전극(4) 및 상부집속전극(5)에 약 7KV, 양극(6) 25KV가 인가된다.In this case, the general operating voltage of the electron gun is OV to the control electrode 2, about 700V to the acceleration electrode 3, about 7KV to the lower focusing electrode 4 and the upper focusing electrode 5, and 25KV of the anode 6 are applied. do.

이와 같이 전자총의 구성에 있어서, 3개의 음극(1A), (1B), (1C)에 인가되는 신호전위에 의해서 각각의 전자비임량이 제어된 3개의 전자비임 (A), (B), (C)은, 가속전극(3)과 하부집속전극(4)과의 대향된 각 구멍간에서 형성되는 프리포커스렌즈로 약간의 집속Thus, in the structure of the electron gun, three electron beams (A), (B), and (C) whose respective electron beam amounts are controlled by signal potentials applied to the three cathodes 1A, 1B, and 1C. ) Is a prefocus lens formed between each of the opposing holes of the acceleration electrode 3 and the lower focusing electrode 4 to focus a little.

이와 같이 구성되는 전자총에 있어서, 수상관의 형광면상에서의 결상점의 크기, 즉 포커스 특성의 화상의 선예도(線銳度)를 좌우하기 때문에, 가능한 한 작게하는 것이 바람직하고, 또, 포커스 특성의 향상에는 일반적으로 주렌즈이 구멍을 크게하는 일이 실행되고 있다.In the electron gun configured as described above, since the size of the imaging point on the fluorescent surface of the water tube, that is, the sharpness of the image of the focus characteristic is influenced, it is preferable to make it as small as possible, and also to improve the focus characteristic. In general, the main lens is made to enlarge the hole.

제2도는 상부집속전극(5)의 상면(上面)을 표시한 요부평면도이다. 동도면에 있어서, 직경(D)의 3개의 전자비임통과구멍(5A), (5B), (5C)은 각각 간격(S)으로 일직선상에 인라인 상태로 배열되어 이있다. 그리고, 포커스 특성을 향상시키는 수단으로서 주렌즈구멍을 확대하기 위해서 전자비임통과구멍(5A), (5B), (5C)의 직경(D)을 크게할 필요가 있다. 그러나, 두께가 약 0.3mm의 비자성금속, 예를 들면 스테인레스 강판을 프레스가 공해서 형성하는 상부집속전극(5)의 전자비임통과구멍(5A), (5B), (5C)은 제1도에 표시한 양극(6)과의 내전압 특성개량 때문에 조리개 구멍 구조로할 필요가 있다. 또, 주렌즈 전개의 회전대칭성의 열화방지에는 조리개깊이(1)를 구멍의 직경(D)의 1/2 이상 필요로하기 때문에 부품가공상의 문제로 직경(D)은 구멍간격(S)보다도 0.8-1.0mm 작은 치수로 제약된다. 또, 이 구멍 간격(S)을 크게하는 것은, 수상관 동작시의 형광면 각 점에서의 수렴오차가 커지는 일 및 주렌즈를 형성하는 상부집속전극(5)과 양극(6)의 수평방향의FIG. 2 is a plan view of main parts showing the top surface of the upper focusing electrode 5. As shown in FIG. In the same figure, three electron beam through holes 5A, 5B, and 5C of diameter D are arranged in an inline state in a straight line at intervals S, respectively. Then, in order to enlarge the main lens hole as a means for improving the focus characteristic, it is necessary to increase the diameter D of the electron beam passing holes 5A, 5B, and 5C. However, electron non-passing holes 5A, 5B, 5C of the upper focusing electrode 5 formed by pressing a nonmagnetic metal having a thickness of about 0.3 mm, for example, a stainless steel sheet, are shown in FIG. It is necessary to have a diaphragm hole structure because of the improvement of the breakdown voltage characteristic with the anode 6 shown in FIG. In addition, the diaphragm depth (1) is required to be 1/2 or more of the diameter (D) of the hole to prevent rotational symmetry deterioration of the main lens development. -1.0mm constrained to small dimensions. The hole spacing S is increased to increase the convergence error at each point of the fluorescent surface during the operation of the picture tube and the horizontal direction of the upper focusing electrode 5 and the anode 6 forming the main lens.

또, 양호한 포커스 특성을 얻기 위해서는, 비임통과구멍(5A), (5B), (5C)등의 진원도(眞圓度) 오차(긴직경-짧은 직경)는 구멍직경(D)의 약 0.5%이하가 바람직한 것으로 되어 있다. 이 때문에, 전자총의 조립은, 각각의 전자비임통과구멍을 관통하는 3개의 심금(芯金)가열한 멀티 포옴유리(8)를 지지체(9)에 압착해서 행한다. 이 경우, 3개의 심금은 각 전극부품의 구멍피치(S) 및 구멍직경(D)에 오차가 있기 때문에 구멍직경(D)보다도 0.02mm∼0.03mm정도 가늘게 설정된다. 따라서, 각 전극부품 제작시의 오차 및 멀티포옴유리(8)의 압착시의 응력에 의해서 컵형상 본체의 변형이, 조리개 구멍에서 형성되는 비임통과구멍(5A), (5B), (5C)에 파급해서 치구로부터 떼어낸 상태에서 측정한 진원도 오차는 극단적인 경우에는 약 0.05mm, 즉 구멍직경(D=3.9mm)의 경우 약 1.3%에 달하는 일이 있다.Further, in order to obtain good focus characteristics, roundness errors (long diameter-short diameter) such as non-passing holes 5A, 5B, and 5C are about 0.5% or less of the hole diameter D. Is preferred. For this reason, the assembly of the electron gun is performed by pressing the three core heated multi-form glass 8 penetrating the respective electron beam through holes onto the support 9. In this case, the three cores are set to be 0.02 mm to 0.03 mm thinner than the hole diameter D because there is an error in the hole pitch S and the hole diameter D of each electrode component. Therefore, the deformation of the cup-shaped main body due to the error at the time of manufacturing each electrode component and the stress at the time of crimping the multi-form glass 8 is caused by the non-through holes 5A, 5B, and 5C formed in the aperture hole. The roundness error measured in the state of spreading and detachment from the jig may reach about 0.05 mm in extreme cases, that is, about 1.3% in the case of a hole diameter (D = 3.9 mm).

이와 같이 진원도의 저하로 주렌즈의 전개가 찌그러짐으로서 전자비임에 비점수차(非鮎差)가 생겨, 포커스 특성이 손상되는 중대한 결점이 있었다.As described above, the development of the main lens is distorted due to the decrease in roundness, which causes astigmatism in the electron beam, which causes a serious defect in that the focus characteristic is impaired.

따라서, 본 발명은 상기한 종래의 결점을 감안해서 이루어진 것으로서, 그 목적으로 하는 바는 상기한 부작용을 경감시켜, 주렌즈구경을 확대함과 동시에 전자총의 조립정밀도를 향상시키고, 포커스 특성을 향상시킨 컬러 수상관용 전자총을 제공하는데 있다.Accordingly, the present invention has been made in view of the above-mentioned conventional drawbacks, and its object is to reduce the above-mentioned side effects, to enlarge the main lens diameter, to improve the assembly precision of the electron gun, and to improve the focus characteristic. To provide a color award gun.

이와 같은 목적을 달성하기 위해서 본 발명은 긴직경 방향으로 인라인 상태로 3개의 전자비임통과구멍을 형성한 장원형(長圓形)의 후판(厚板)을 간격을 설정해서 대향배치하는 주렌즈 형성 전극에 있어서, 양쪽의 전자비임통과구멍을 각각 바깥쪽 방향을In order to achieve the above object, the present invention provides a main lens for facing and arranging an oblong thick plate having three electron non-pass holes formed in-line in a long diameter direction. In the electrode, the electron beam passing holes on both sides

다음에, 도면을 사용해서 본 발명의 실시예를 상세히 설명한다. 제3도는 본 발명에 의한 컬러 수상관용 전자총의 일실시예를 표시한 상부집속전극이며, 동도면(a)은 요부평면도, 동도면(b)은 그 단면도이다. 동도면에 있어서, 상부집속전극(50)은 3개의 전자비임통과구멍을 형성한 두께 약 2mm의 장원형판형상체(長圓形板形狀體) (51)와, 두깨(t)의 장원링판형상체(52)를 접합하여 구성되어 있다. 그리고, 장원형판형상체(51)의 중앙의 전자비임통과구멍(51B)은 긴직경(D1), 짧은 직경(Ds)의 타원구멍이고, 양쪽의 전자비임통과구멍(51A) 및 (51C)은 각각 바깥쪽이 반경(D1/2)의 반원, 안쪽이 중앙구멍(51B)과 같은 크기의 반타원을 연접한 구멍으로서, 각각의 중심이 간격(S)으로 배치되어 있다. 이와 같이, 장원형판형상체(51)의 짧은 직경 방향을 전자비임통과구멍의 긴직경 방향으로 하므로서, 긴직경(D1)은 구멍피치(S)보다도 크게할 수 있는 것이 가능해진다. 또, 종래의 조리개 구멍과 달라서 장원형 후판을 프레스 가공하기 때문에, 전자비임통과구멍(51A), (51B), (51C) 상호간의 분리지부의 치수 및 양쪽의 구멍(51A), (51C)과 장원형후판의 긴직경끝과의 치수도 약 0.5mm로 작게할 수 있기 때문에, 수평방향의 치수(L)를 크게할 필요는 없다. 그러나, 이와 같은 장원형판형상체(51)만으로 주렌즈를 형성하면, 전자비임통과구멍(51A), (51B), (51C)이 타원형 및 반원과 반타원을Next, embodiments of the present invention will be described in detail with reference to the drawings. 3 is an upper focusing electrode showing an embodiment of the electron gun for a color image tube according to the present invention. The same drawing (a) is the main part plan view and the drawing (b) is a sectional view thereof. In the same figure, the upper focusing electrode 50 has an oblong plate-shaped body 51 having a thickness of about 2 mm in which three electron beam passing holes are formed, and a t-shaped long ring plate shape. The upper body 52 is joined together and is comprised. The electron beam through hole 51B in the center of the rectangular plate-like body 51 is an elliptical hole having a long diameter D1 and a short diameter Ds, and the electron beam through holes 51A and 51C on both sides thereof. Respectively, the outer side is a semicircle of a radius D1 / 2, and the inner side is a hole in which a semi-ellipse of the same size as the center hole 51B is connected, and the centers thereof are arranged at intervals S. As shown in FIG. In this manner, the long diameter D1 can be made larger than the hole pitch S by making the short radial direction of the rectangular plate-like body 51 the long diameter direction of the electron beam passing hole. In addition, since the rectangular plate is press-formed unlike the conventional aperture hole, the dimensions of the separation branch between the electron non-pass holes 51A, 51B, and 51C, and the holes 51A and 51C on both sides, and Since the dimension with the long diameter end of a long plate can also be made small about 0.5 mm, it is not necessary to enlarge the dimension L of a horizontal direction. However, when the main lens is formed only by such an ellipsoidal plate-shaped body 51, the electron beam through holes 51A, 51B, and 51C form ellipses, semicircles, and semi-ellipses.

제4도는 상부집속전극(50)과 같은 구성에 의한 양극(60)을 대향배치시킨 전자총의 요부단면을 표시한 것이다. 동도면에 있어서, 주렌즈의 구경은 각 전자비임통과구멍(51A)∼(51C) 및 (61A)∼(61C)의 짧은 직경쪽이 장원링판형상체(52) 및 (62)에 의해서 간격이 넓어지기 때문에, 장원링판형상체(52), (62)의 두께(t)을 적당한 값으로 선택하므로서, 전자비임이 통과하는 범위의 주렌즈구경은 긴직경(D1)에 상당하는 대략 회전대칭의 전계가 형성된다.4 shows the principal cross section of the electron gun in which the anode 60 having the same configuration as the upper focusing electrode 50 is disposed. In the same figure, the diameter of the main lens has a gap between the electron beam through holes 51A to 51C and the shorter diameters of the 61A to 61C, which are spaced by the major ring plate members 52 and 62, respectively. Since the width t becomes wide, the main lens diameter of the range through which the electron beam passes is approximately approximately the rotational symmetry corresponding to the long diameter D1, while the thickness t of the long ring plate-shaped bodies 52 and 62 is selected at an appropriate value. An electric field is formed.

제4도에 있어서, 상부집속전극(50) 및 양극(60)으로 이루어지는 전자총은, 상부집속전극(50) 및 양극(60)의 전자비임통과구멍(51A)∼(51C),(61A)∼(61C)을 고정밀도하게 타발하는 판두께로는 약 2mm의 한계가 있기 때문에, 구멍직경이 약 4mm이상의 경우에는 약 1/2이상의 두께를 만족시킬 수 없으므로, 장원형후판에 집속전극(50)의 구멍(51A)∼(51C) 및 양극(60)의 구멍(61A)∼(61C)과 동등한 구멍만을 타발한 보조전극(500) 및 (600)의 배면에 지지체(501) 및 (601)를 중첩시켜서 구성되어 있다.In FIG. 4, the electron gun composed of the upper focusing electrode 50 and the anode 60 includes the electron beam through holes 51A to 51C, 61A to the upper focusing electrode 50 and the anode 60. Since the plate thickness for precisely punching (61C) has a limit of about 2 mm, when the hole diameter is about 4 mm or more, the thickness of about 1/2 or more cannot be satisfied. Supports 501 and 601 are formed on the back surface of the auxiliary electrodes 500 and 600 which only punched holes equivalent to the holes 51A to 51C of the anode and the holes 61A to 61C of the anode 60. It is constructed by overlapping.

이와 같은 구성에 의하면, 주렌즈구성전극의 기계적강도가 강화되기 때문에, 전자총조립시의 멀티포옴유리의 압착에 의한 응력에 의해서도 형상이 변형되는 일이 없다. 따라서, 주렌즈구경이 등 가적으로 확대된는 동시에, 조립정밀도가 향상되므로서, 포커스 특성이 향상된 전자총을 얻을 수 있다.According to such a structure, since the mechanical strength of the main lens constituting electrode is enhanced, the shape is not deformed even by the stress caused by the pressing of the multi-form glass during the electron gun assembly. Therefore, the electron gun can be obtained with the main lens diameter being enlarged equivalently and the assembling precision being improved while the focus characteristic is improved.

또한, 양쪽의 전자비임의 수렴은 제5도에 양극(60)의 평면도를 표시한 바와 같이 양쪽의 구멍(61A), (61C)의 피치 (S')를 상부집속전극(50)의 양쪽구멍(51A), (51C)의 피치(S)보다도 예를 들어 0.1∼0.15mm의 범위에서 크게 설정하므로서, 실행할 수 있다. 이 경우, 양쪽의 주렌즈전계가 찌그러지므로서, 중앙전자비빙(B)과 비교해서 양쪽전자비임(A), (C)이 다소 세로로 긴경향으로 된다. 이보정에는, 예를 들면, 중앙타원구멍(61B)의 짧은 직경(D's)을 상부집속전극(50)의 중앙타원구멍(51B)의 짧은 직경(Ds)보다도 약간 크게하므로서, 중앙전자비임(B)을 양쪽전자비임(A), (C)과 같은 정도의 세로길이에 맞추고, 또 상부집속전극(50) 및 양극(60)의 장원링판형상체(52) 및 (62)의 두께(t)를 다소 수정하므로서 3개의 전자비임형상을 둥글게 조정할 수 있다.In addition, the convergence of both electron beams is shown in Fig. 5 as the plan view of the anode 60 shows the pitches S 'of the holes 61A and 61C on both sides, and both holes of the upper focusing electrode 50. It can be performed by setting larger than the pitch S of 51A and 51C in the range of 0.1-0.15 mm, for example. In this case, both main lens electric fields are distorted, so that both the electron beams A and C tend to be slightly longer in length than the center electron bibbing B. FIG. For this correction, for example, the center electron beam B is made larger by making the short diameter D's of the center ellipse hole 61B slightly larger than the short diameter Ds of the center ellipse hole 51B of the upper focusing electrode 50. ) To the same length as both electron beams (A) and (C), and the thickness (t) of the long ring plate-shaped bodies 52 and 62 of the upper focusing electrode 50 and the anode 60. By slightly modifying the three electron beam shapes can be rounded.

또, 중앙전자비임(B)과 양쪽전자비임(A) 및 (C)의 형상에 차이가 있는 경우는, 제3도 및 제4도에 표시한 상부집속전극(50) 및 양극(60)의 중앙타원 구멍(51B) 및 (61B)의 짧은 반경(Ds/2) 및 (Ds'/2)과 양쪽구멍(51A), (51C) 및 (61A), (61C)의 안쪽반타원의 짧은 반경

Figure kpo00001
및
Figure kpo00002
을 적정치로 선택하므로서 3개의 전자비임을 둥글게 미소조정할 수 있다. 최근, 컬러 수상관은 편향전력의 저감을 목적으로 하여 넥관(neck管)의 직경이 가늘어지는 동향에 있으며, 그 내부에 수용되는 전자총의 축소화에 의해서, 주렌즈구경이 작아져서 포커스 특성이 저하되기 때문에 그 개량에 대한 요구가 매우 높다. 이 때문에, 현재 생산되고 있는 넥직경이 약 22.5mm의 전자총의 주렌즈치수는 구멍피치(S=4.75mm) 구멍직경(D=3.9mm)으로 되어 있으나, 본 발명의 주렌즈에서는 상부집속전극(50)은 구멍피치(S=4.75mm) 긴직경(DI=5.0mm), 짧은 직경(Ds=4.0mm), 양극(60)은 구멍피치(S'=4.85mm), 긴직경(DI=5.0mm), 짧은 직경(Ds'=4.30mm)이고,In addition, when there is a difference in the shape of the center electron beam (B) and both electron beams (A) and (C), the upper focusing electrode 50 and the anode 60 shown in Figs. Short radius (Ds / 2) and (Ds' / 2) of the center ellipse holes 51B and 61B and the short radius of the inner semi-ellipse of both holes 51A, 51C and 61A, 61C
Figure kpo00001
And
Figure kpo00002
By selecting the appropriate value, three electron beams can be finely adjusted roundly. In recent years, the color tube has a tendency to decrease the diameter of the neck tube for the purpose of reducing the deflection power, and due to the reduction of the electron gun accommodated therein, the main lens diameter becomes smaller and the focus characteristic is deteriorated. Therefore, the demand for the improvement is very high. For this reason, the main lens dimension of the electron gun of which the currently produced neck diameter is about 22.5 mm is the hole pitch (S = 4.75 mm) and the hole diameter (D = 3.9 mm). However, in the main lens of the present invention, the upper focusing electrode ( 50) is hole pitch (S = 4.75mm) long diameter (DI = 5.0mm), short diameter (Ds = 4.0mm), anode 60 is hole pitch (S '= 4.85mm), long diameter (DI = 5.0 mm), short diameter (Ds' = 4.30 mm),

또한, 상부집속전극(50) 및 양극(60)을 구성하는 장원형판형상체(51), (61) 및 장원링판형체(52), (62)는 프레스 가공법에 의한 제작에서는 판두께가 제약되어, 구멍직경이 클 경우에는 필요로 하는 구멍직경의 1/2이상의 두께를 일체로 형성하는 것은 곤란했으나, 금속분말을 압축성형후, 소결(疏決)하는 분말야금법에 의하면 용이하게 사리 두꺼운 부품을 얻을 수가 있다.Further, the plate-shaped plates 51, 61, and the ring-shaped plate bodies 52, 62 constituting the upper focusing electrode 50 and the anode 60 have a limited plate thickness in the production by the press working method. In the case where the hole diameter is large, it is difficult to integrally form a thickness of 1/2 or more of the required hole diameter, but the powder metallurgy method of sintering the metal powder after compression molding is easily thick. You can get parts.

이 분말야금법에 의한 상기 각 전극(50), (60)을 구성하는 판형상체의 형성은 비자성재로서 예를들면 스테인레스등의 금속분말에 아크릴수지등의 바인더를 가해서 소정의 금형으로 가압성형하고 진공속 또는 환원성 분위기속에서 600∼700℃로 가소결(假燒結)한 후, 다시 1200∼1300℃의 진공속 또는 환원성 분위기속에서 소결하고, 소결로 인한 미소치수변화를 마무리 금형에 의해서 재차 프레스가공하여 정형하므로서 종래의 박판프레스부품을 상회하는 고정밀도의 부품을 얻을 수 있다.Formation of the plate-like body constituting the electrodes 50 and 60 by the powder metallurgy is a nonmagnetic material, for example, by pressing a predetermined mold by adding a binder such as an acrylic resin to a metal powder such as stainless steel. After sintering at 600 to 700 ° C. in a vacuum or reducing atmosphere, and then sintering again in a vacuum or reducing atmosphere at 1200 to 1300 ° C., the small size change due to sintering is again pressed by a finishing mold. By processing and shaping, it is possible to obtain a high-precision part that exceeds the conventional thin press part.

제6도는 본 발명에 의한 컬러 수상관용 전자총의 다른 실시예를 표시한 상부집속전극이며, 동도면(a)은 요부평면도, 동도면(d)은 그 단면도이다. 동도면에 있어서, 상부집속전극(53)을 구성하는 장원형판형상체(54)에는 상기와 마찬가지의 3개의 전자비임통과구멍(54A), (54B), (54C)이 형성되고, 장원링판형상체(55)쪽의 면에 폭(W), 깊이(h)의 홈(54D)이 형성되어 있다. 이와 같은 구성에 있어서, 홈(54D)의 폭(W)은 구멍의 긴직경(D1)이하이고, 깊이(h)는 장원링판형상체(55)의 두께(T1)와의 관계에서 적당한1 Fig. 6 is an upper focusing electrode showing another embodiment of the electron gun for color image tube according to the present invention. The same drawing (a) is the main part plan view and the drawing (d) is a sectional view thereof. In the same figure, three electron beam through holes 54A, 54B, and 54C similar to the above are formed in the rectangular plate-like body 54 constituting the upper focusing electrode 53, and the ring-shaped plate is formed. The groove 54D of the width W and the depth h is formed in the surface on the upper body 55 side. In such configurations, the width (W) of the groove (54D) is no more than a long diameter (D1) of the hole, the depth (h) are suitable in relation to the thickness (T 1) of the manor ring plate member (55) 1

그런데, 홈(54D)의 형상은 복수의 곡선 또는 직선으로 구성해도 좋다.By the way, the shape of groove 54D may be comprised by several curve or straight line.

제7도는 본 발명에 의한 컬러수상관전자총의 또 다른 실시예를 표시한 상부집속전극이며, 동도면(a)은 요부평면도, 동도면(b)은 그 단면도이다. 동도면에 있어서, 상부집속전극(56)은, 제3도와 같은 형상의 3개의 전자비임통과구멍(57A), (57B), (57C)을 형성한 장원형판형상체(57)와 장원링판형체(58)로 구성되어 있다. 이와 같은 구성에 있어서, 장원링판형상체(58)의 구멍(58A)은 장원형판형상체(57)의 양쪽구멍(57A) 및 (57C)의 바깥쪽 반원보다 약간 큰 반원을 잇는 구멍으로 되어 있으나, 두께(t2)의 대소에 의해 양자의 치수를 적절히 선택하므로서 상기와 마찬가지로 비점수차를 보정할 수 있다.7 is an upper focusing electrode showing still another embodiment of the color receiver electron gun according to the present invention, wherein the same drawing (a) is a planar top view and the drawing (b) is a sectional view thereof. In the same figure, the upper focusing electrode 56 has a rectangular plate-like body 57 and a ring-shaped plate formed with three electron beam through holes 57A, 57B, and 57C having the same shape as in FIG. It consists of a sieve 58. In such a configuration, the hole 58A of the long ring plate member 58 is a hole connecting a semicircle that is slightly larger than the outer semicircles of both the holes 57A and 57C of the long plate member 57. As described above, astigmatism can be corrected by appropriately selecting both dimensions by the magnitude of the thickness t 2 .

또, 상기한 실시예에 있어서는 바이퍼텐셜집속형 전자총에 대하여 설명했으나, 본 발명은 이에 한정되어 것은 아니고, 유니퍼텐셜형 및 다단 집속형 전자총등과 같은 다른 전자총의 주렌즈형성 전극에 적용해도 상기한 바와 완전히 똑같은 효과를 얻을 수 있다.In addition, in the above-described embodiment, the bipotential focusing electron gun has been described, but the present invention is not limited thereto, and the present invention is applicable to the main lens forming electrodes of other electron guns such as the universal and multi-stage focused electron guns. You get exactly the same effect as a bar.

이상 설명한 바와 같이 본 발명에 의한 컬러 수상관용전자총에 의하면, 전극의 가공상의 문제점, 내점압 특성등의 부작용을 수반하는 일없이 주렌즈구경을 확대할 수 있으므로 포커스 특성이 향상되고, 선예도가 높은 화상을 얻을 수 있는 극히 뛰어난 효과가 있다.As described above, according to the color receiving electron gun according to the present invention, since the main lens diameter can be enlarged without the side effects such as electrode processing problems and resistance to pressure resistance, the focus characteristic is improved and the sharpness image is high. There is a very good effect to get.

Claims (4)

주렌즈형성면쪽에 장원링판형상체를 접합한3개의 전자비임통과구멍을 긴직경방향으로 인라인상태로 배치한 장원형판형상체로 이루어지는 2쌍의 장원형후판상형상 복하전극을 간격을 설정해서 대향배치시키고, 이대향전극간에 주렌즈전계를 형성하는 주렌즈전계형성전극을 구비하여 이루어진 컬러 수상관용 전자총에 있어서, 상기 장원형판형상체의 양쪽의 전자비임 통과구멍은 각각 바깥쪽 방향을 반원형상, 안쪽방향을 장원형판형상체의 짧은 직경방향을 긴직경으로 하는 반타원형상을 연접한 이형구멍으로 하고, 중앙의 전자비임 통과구멍은 장원형판형상체의 짧은 직경방향을 긴직경로 하는 타원형상구멍으로 하며, 상기 장원링판형상체는 상기 장원형판형상체의 양쪽 전자비임통과구멍의 바깥쪽 반원향상을 잇는 장원형 구멍을 형성하여 양장의 바깥쪽 반원형상의 중심을 일치시켜서 접합하고, 또한 상기 장원형후판형상 복합전극의 적어도 한쪽은 상기 장원형판형상체의 3개의 전자비임통과구멍이 인접하는 전자비임 통과구멍의 짧은 직경부분의 간격이 넓어지도록 형성하여 이루어진 것을 특징으로 하는 컬러 수상관용 전자총.Two pairs of rectangular platelet shaped abdominal electrodes consisting of three rectangular beam-shaped bodies having three electron beam through-holes joined to the main lens-forming surface and in-line in a long-diameter direction are set at intervals to face each other. In the color image tube electron gun which is disposed and includes a main lens field forming electrode which forms a main lens electric field between the opposite electrodes, the electron beam passing holes on both sides of the rectangular plate-shaped body each have a semicircle shape in the outward direction. The inner side is a release hole in which a semi-ellipse shape in which the short radial direction of the rectangular plate-shaped body is a long diameter is connected, and the electron beam passing hole in the center is an elliptical hole having a long diameter in the short radial direction of the rectangular plate-shaped body. Wherein the ring-shaped ring member is formed by forming a rectangular hole connecting the semi-circular enhancement of the outer side of the electron beam through hole of the rectangular plate-shaped body The center of the outer semicircle of the sheet is aligned to be bonded to each other, and at least one of the long plate-shaped composite electrodes has a gap between the short diameter portions of the electron beam through holes adjacent to the three electron beam through holes of the long plate-shaped body. Color water tube electron gun, characterized in that formed to widen. 제1항에 있어서, 상기 장원형판형상체 및 장원형링판형상체의 바깥쪽 반원형상을 합치시켜서 접합하는 것을 특징으로 하는 컬러 수상관용 전자총.The color gun tube electron gun according to claim 1, wherein the outer semicircular shapes of the rectangular plate-shaped member and the rectangular ring plate-shaped member are joined together to be joined. 제1항에 있어서, 상기 장원형판형상체의 주렌즈 대향면쪽에 3개의 전자비임 통1 According to claim 1, Three electron beam bins on the opposite side of the main lens of the rectangular plate-shaped body 1 제1항에 있어서, 상기 장원링판형상체의 장원구멍을 형성하는 양쪽방원형상을, 장원형판상체의 양쪽 전자비임통과구멍의 바깥쪽 반원형상보다 크게 한 것을 특징으로 하는 컬러 수상관용 전자총.The color gun tube electron gun according to claim 1, wherein the both-circle shape which forms the long-term hole of the said ring-shaped plate-shaped body is made larger than the outer semicircle shape of the both electron beam passing holes of the long-shaped plate-shaped body.
KR1019850002235A 1984-04-04 1985-04-03 Electron gun of color crt KR900001499B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP65706 1984-04-04
JP59065706A JPS60211743A (en) 1984-04-04 1984-04-04 Electron gun for color picture tube

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KR850007534A KR850007534A (en) 1985-12-04
KR900001499B1 true KR900001499B1 (en) 1990-03-12

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JP2666723B2 (en) * 1994-05-09 1997-10-22 株式会社日立製作所 Color picture tube

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* Cited by examiner, † Cited by third party
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JPS5772246A (en) * 1980-10-22 1982-05-06 Toshiba Corp Electron gun for color picture tube
JPS58103752A (en) * 1981-12-16 1983-06-20 Hitachi Ltd Electron gun for color picture tube

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JPH0534766B2 (en) 1993-05-24
KR850007534A (en) 1985-12-04

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