公开(公告)号：JPS6438947A

公开(公告)日：1989-02-09

申请号：JP19444887

申请日：1987-08-05

Applicant: TOSHIBA CORP

Inventor： SHIMOMA TAKETOSHI ,  KOSHIGOE SHINPEI ,  HASEGAWA TAKAHIRO

IPC: H01J29/48 ,  H01J29/50

Abstract: PURPOSE:To obtain high resolution on the whole central and peripheral parts of a screen, by forming a vertically strong asymmetrical focusing electric field in the vicinity of a focusing electrode and next forming a vertically strong asymmetrical divergent electric field in the vicinity of a final acceleration electrode so that both electric fields are separated by middle electrodes. CONSTITUTION:A main lens part is composed of the following parts: a focusing electrode 50, a final acceleration electrode 60, and one or plural middle electrodes 70, 80 disposed between the electrodes 50 and 60. A resistor 100 installed inside a tube and in the vicinity of an electron gun is used to divide a final acceleration voltage into prescribed values, and the divided voltages are applied to the middle electrodes 70, 80. A vertically strong asymmetrical focusing electric field is formed by penetration of the electric field into the focusing electrode 50. A vertically strong asymmetrical divergent electric field is formed by penetration of the electric field into the final acceleration electrode 60. The focusing electric field and the divergent electric field are separated independently by the middle electrodes 70, 80 to which fixed voltages are applied. Hence, resolution at the peripheral part of the screen can be much improved without sacrificing the resolution at the central part of the screen.

公开(公告)号：JPS61188839A

公开(公告)日：1986-08-22

申请号：JP2635085

申请日：1985-02-15

Applicant: TOSHIBA CORP

Inventor： KOSHIGOE SHINPEI ,  FUJIWARA TAKESHI

IPC: H01J29/50 ,  H01J29/48

Abstract: PURPOSE:To ensure sufficient surface area of a resistor thus to prevent thermal breakdown by making one cross-section of at least one of plural electrode supporters in electron gun to be flat and inserting a resistor. CONSTITUTION:It is comprised of plural electrodes, electrode supporters 2a, 2b and a resistor 3 for supplying potential to at least one electrode. The cross- section of said supporter 2b along the advancing direction of electron beam is made flat at the side facing against the neck 19 while stepped by thin and thick sections at the other side. The flat section can contain a sufficiently long resistor 3 thus to ensure sufficiently wide surface area. Consequently, even when flowing such large current as an neglect the influence of undesired current such as inter-electrode leak current, the resistor 3 can be protected from thermal breakdown.

公开(公告)号：JPS6174246A

公开(公告)日：1986-04-16

申请号：JP19578084

申请日：1984-09-20

Applicant: Toshiba Corp

Inventor： SHIMOMA TAKETOSHI ,  KOSHIGOE SHINPEI ,  FUJIWARA TAKESHI

IPC: H01J29/48 ,  H01J29/50

CPC classification number: H01J29/503 ,  H01J2229/4841

Abstract: PURPOSE:To achieve good resolution over the entire area of the picture screen by applying a voltage increasing or decreasing synchronously with the deflection current to the fourth grid of a quadrapotential-type complex electron gun to form a symmetrical lens. CONSTITUTION:The fourth grid 5 consists of three plates. The first plate 8 and the third plate 10 have circular electron-beam holes 11, 12 and 13 and 14, 15 and 18 respectively. The voltage (V2) applied to the first and the third plates 8 and 10 is the same as that applied to the second grid 3. The second plate 9 has lateral rectangular electron beam holes 17, 18 and 19 and a dynamic voltage VD corresponding to the degree of beam deflection is applied to the second plate 9. Because of the above structure, the electron lens forms a symmetrical lens only when deflected. Consequently, it is possible to improve the resolution of the peripheral area of the picture screen without deteriorating the resolution of the central area of the picture screen.

Abstract translation: 目的：通过将与偏转电流同步增加或减小的电压施加到四电位型复合电子枪的第四栅极以在图像屏幕的整个区域上实现良好的分辨率，以形成对称透镜。 构成：第四个栅格5由三个板组成。 第一板8和第三板10分别具有圆形电子束孔11,12,13和14,15和18。 施加到第一和第三板8和10的电压（V2）与施加到第二栅极3的电压（V2）相同。第二板9具有侧向矩形电子束孔17,18和19，并且对应于 光束偏转的程度被施加到第二板9上。由于上述结构，电子透镜仅在偏转时形成对称透镜。 因此，可以提高图像屏幕的周边区域的分辨率，而不会降低图像屏幕的中心区域的分辨率。

公开(公告)号：JPS598246A

公开(公告)日：1984-01-17

申请号：JP11544782

申请日：1982-07-05

Applicant: Toshiba Corp

Inventor： KOSHIGOE SHINPEI ,  FUJIWARA TAKESHI

IPC: H01J29/48 ,  H01J29/50

CPC classification number: H01J29/503 ,  H01J29/488

Abstract: PURPOSE: To improve the resolution at the periphery without deteriorating that of the screen center by forming the first non-rotation symmetric lens with a pre- focus lens section and the second one with a main lens section and constituting so that the first and second non-rotation symmetrical lenses are at a right angle to each other.
CONSTITUTION: When the first non-rotation symmetric lens 37 and the second non-rotation symmetric lens 36 are combined together, a nearly circular luminescent spot can be obtained due to their consolidated action, but the focusing action of the first non-rotation symmetric lens is stronger in the vertical axis direction, thus the incident position to the second non-rotation symmetric lens in the vertical axis direction is nearer to the center axis than that of the horizontal axis, thereby the spherical aberration applied from the second non- rotation symmetric lens is small. Therefore, when a beam is applied the deflection aberration, the oblong halo generated at diagonal sections of the screen can be made small and the resolution is improved.
COPYRIGHT: (C)1984,JPO&Japio

Abstract translation: 目的：通过用预聚焦透镜部分形成第一非旋转对称透镜并且第二非旋转对称透镜具有主透镜部分并且构成使得第一和第二非透镜部分的第一和第二非透镜部分 旋转对称透镜彼此成直角。 构成：当将第一非旋转对称透镜37和第二非旋转对称透镜36组合在一起时，由于其固定的作用，可以获得近似圆形的发光点，而是第一非旋转对称透镜36的聚焦作用 在垂直轴方向上较强，因此，垂直轴方向的第二非旋转对称透镜的入射位置比水平轴更靠近中心轴，由此从第二非旋转对称透镜施加的球面像差 镜头很小 因此，当施加光束的偏转像差时，可以使在屏幕的对角线部分处产生的长圆晕变小，并且提高分辨率。

公开(公告)号：JPS59834A

公开(公告)日：1984-01-06

申请号：JP9063083

申请日：1983-05-25

Applicant: Toshiba Corp

Inventor： TAKENAKA SHIGEO ,  KOSHIGOE SHINPEI

IPC: H01J29/50

CPC classification number: H01J29/503

Abstract: PURPOSE:To both increase mechanical accuracy and improve focusing performance of an electron beam, by constituting oppositely faced electrodes for forming a main electron lens as an integrally formed electrode containing three electron beam permeable hole parts and forming an oppositely facing space of the integrally formed electrode to the narrowest in the peripheral part. CONSTITUTION:Each of a cathode G1 is arranged independent corresponding to three electron beams arranged in one row, and the other elecdrode, the first- the fourth grids 62-65 are constructed to an integrally formed electrode with drilled three permeable hole parts for an electron beam. While incident permeable hole parts 72-74 of an electron beam from a triode part are drilled to a bottom part 71 of a bottomed cylindrical supporting member 641 in the third grid 64, and a flange part 75 is provided to an opening hole part, further at least an internal wall of a side wall part 76 is coaxially arranged with an axis of the hole parts 72-74 and formed by an envelope surface of cylinder 721-741 having a common part 77. In this way, a diameter of an electron gun main lens can be enlarged, and a good focusing characteristic in good accuracy can be obtained.

Abstract translation: 目的：为了提高机械精度并提高电子束的聚焦性能，通过构成形成主电子透镜的相对面的电极作为包含三个电子束透过孔部分的整体形成的电极并形成一体形成的电极的相对的空间 到周边部分最窄。 构成：阴极G1各自对应于排列成一行的三个电子束独立地布置，而另一个电极，第一至第四栅极62-65被构造成整体形成的电极，其中钻有三个用于电子的可渗透孔部分 光束。 虽然来自三极管部分的电子束的入射渗透孔部分72-74被钻到第三格栅64中的有底圆柱形支撑构件641的底部71，并且凸缘部分75设置在开孔部分上 至少侧壁部分76的内壁与孔部分72-74的轴线同轴地布置并且由具有公共部分77的气缸721-741的包络面形成。以这种方式，电子的直径 枪主镜头可以放大，并且可以获得良好的精度的良好的聚焦特性。

公开(公告)号：JPH06124663A

公开(公告)日：1994-05-06

申请号：JP27328092

申请日：1992-10-13

Applicant: TOSHIBA CORP ,  TOSHIBA ELECTRONIC ENG

Inventor： HASEGAWA TAKAHIRO ,  KOSHIGOE SHINPEI ,  FUKUDA SHIGEO

IPC: H01J29/48 ,  H01J29/50

Abstract: PURPOSE:To make the focusing quality uniform by forming slits extened to the thickness direction of a dielectric substrate and facing to each other in rectangular direction and forming an electrode in both front and rear sides and the slits. CONSTITUTION:A resistor 33 and a capacitor 34 are installed respectively in a rear side of a pair of insulating supports 31 of an electron gun and in the other rear side. A terminal 36 in one end of the resistor 33 is connected with a shield cup C at the tip part and a terminal 37 in the other end is earthed through a variable resistor 40 and middle terminals 41, 42 are connected with middle electrodes Gm1, Gm2. Electron beams from a cathode are converged on a phosphor screen ultimately by main lens composed of an electrode G5, the electrodes Gm1, Gm2, and an electrode G6. Dynamic focusing voltage forms slits in the thickness direction from both front and rear sides of the dielectric substrates of the capacitor connected with electrodes to which voltage is not applied and to the direction rectangular to the thickness direction and an electrode is formed in the slits and thus electrostatic capacity is made large. As a result, a cathode-ray tube having uniform focusing quality is provided.

公开(公告)号：JPH04332438A

公开(公告)日：1992-11-19

申请号：JP1125691

申请日：1991-01-31

Applicant: TOSHIBA CORP

Inventor： HASEGAWA TAKAHIRO ,  KOSHIGOE SHINPEI ,  FUKUDA SHIGEO

IPC: H01J29/48 ,  H01J29/50

Abstract: PURPOSE:To solve problems in accuracy in arranging an electric-field compensating electrode in a cup-shaped electrode so as to eliminate dispersion in the characteristics of a color image-receiving tube set. CONSTITUTION:An electric-field compensating electrode 160 is composed of a flange portion 162 having an opening 161 common to three electron-beams, a slide-fitting portion 163 erected from the end of the opening 161 in its horizontal direction and flat-plate-shaped eaves portions 164 putting a beam array plane therebetween, and respective portions are composed in one united body. Also a space L between the eaves portions 164 in the vertical direction is made equal to the diameter D in vertical direction of beam passage holes 136R, 136G, 136B in a cup-shaped electrode 132 wherein the electric-field compensating electrode 160 is arranged. Furthermore, there is a relation of IH>=OH between the outer diameter OH in horizontal direction of the slide-fitting portion 163 of the electric-field compensating electrode 160 and the inner diameter IH of open end of the cup-shaped electrode 132.

公开(公告)号：JPH04218244A

公开(公告)日：1992-08-07

申请号：JP41083890

申请日：1990-12-14

Applicant: TOSHIBA CORP ,  TOSHIBA ELECTRONIC ENG

Inventor： KOSHIGOE SHINPEI ,  HASEGAWA TAKAHIRO ,  FUKUDA SHIGEO

IPC: H01J29/50

Abstract: PURPOSE:To improve resolution in the whole area on an image screen and effectively prevent discharge having been apt to be caused hitherto by arranging a pair of electric field correcting members, which sandwich plural number of beams respectively from the directions crossing at right angles to those array direction, inside of electrodes in the vicinity of electron beam passing holes. CONSTITUTION:A pair of electric field correcting members 20 and 22, which sandwich three electron beams in a single line arrangement from the directions crossing at right angles to those array direction, are arranged on the fourth grid G4 side of the third grid G3 forming a main lens for an electron gun in an inline type color picture tube and inside of electrodes in the vicinity of electron beam passing holes on the third grid G3 side of the fourth grid G4, and the thickness of the sidewall for the electron beam passing holes on the fourth grid G4 side of the third grid G3 is also set as 10-20% of the diameter of those electron beam passing holes.

公开(公告)号：JPH04160739A

公开(公告)日：1992-06-04

申请号：JP28548590

申请日：1990-10-23

Applicant: TOSHIBA CORP

Inventor： FUJIWARA TAKESHI ,  TOKITA KIYOSHI ,  KOSHIGOE SHINPEI

IPC: H01J29/48 ,  H01J29/50

Abstract: PURPOSE:To decrease a beam spot so that the resolution of the central portion of a screen can be improved by forming a long hole in the intermediate electrode at the side of a focusing electrode and one open hole or a plurality of open holes in a portion of at least one electrode of a focusing electrode and a final accelerating electrode opposed to an intermediate electrode. CONSTITUTION:A long hole with a long axis or horizontal direction is formed in the intermediate electrode Gm1 at the side of a focusing electrode G5 of a plurality of intermediate electrodes Gm1, Gm2, and one open hole or a plurality of open holes corresponding to a single electron beam or a plurality of electron beams are formed in a portion opposed to the intermediate electrodes Gm1, Gm2 of at least one of the focusing electrode 5 and a final accelerating electrode G6. Even if a focusing electric field is made to change by changing a focusing voltage applied to the focusing electrode G5, therefore, almost no effect is produced on a divergence electric field, so that it is possible to make an electron beam into a condition of under-forcus in a vertical direction and cancel a deflecting distortion generated due to a strong deflecting aberration in a vertical direction. It is thereby possible to improve the resolution in the whole area of a screen.

公开(公告)号：JPH02223136A

公开(公告)日：1990-09-05

申请号：JP21295589

申请日：1989-08-21

Applicant: TOSHIBA CORP

Inventor： KANBARA EIJI ,  KOSHIGOE SHINPEI ,  SHIMOMA TAKETOSHI

IPC: H01J29/48 ,  H01J29/96

Abstract: PURPOSE:To increase the preventing effect of the discharge phenomenon occurring in a neck and improve the withstand voltage characteristic by providing voltage extracting terminals to feed the voltage to electrodes staggeringly from a metal ring to the electron beam generation section side. CONSTITUTION:Voltage extracting terminals T1 and T4 and two voltage extracting terminals T21 and T31 between them are provided on a resistor 141 arranged behind the insulating support bar 13a of an electron gun 71. The position of the voltage extracting terminal T21 feeding the potential to the fourth grid G4 is largely drifted to the cathode 11a side, and a metal ring SR from the third grid G3 circling the resistor 141 is wound driftingly to the fourth grid G4 side. The voltage extracting terminal T21 is located on the stem pin 17 side rather than on the metal ring SR side. The occurrence of the discharge phenomenon in a neck is sharply controlled, and the normal operation can be prevented from being impaired or broken by the internal discharge of a cathode-ray tube.