公开(公告)号：JPH052999A

公开(公告)日：1993-01-08

申请号：JP15211291

申请日：1991-06-25

Applicant: TOSHIBA CORP

Inventor： KOSHIGOE SHINPEI ,  KIDA KINJI ,  HASEGAWA TAKAHIRO

IPC: H01J29/48 ,  H01J29/50

Abstract: PURPOSE:To improve resolution of the whole picture area, by newly inserting an auxiliary electrode to be A.C.-grounded, between a focusing electrode composing color picture tube and an intermediate electrode adjoining thereto. CONSTITUTION:An auxiliary electrode Gs is newly placed between the 5th grid G5 and an intermediate electrode Gm1 composing an electron gun. Thus capacitance C5s, Cmm, and Cm6 are generated between respective electrodes: the grid G5, auxiliary electrode Gs, intermediate electrodes Gm1 and Gm2, and 6th grid G6. Especially, it means that the capacitance C5s is grounded through a capacitance CCRT of a picture tube itself formed by an inner conductive film and an outer conductive film of the picture tube. On the other hand, the capacitance Csm between the electrode Gs and Gm1, and the capacitance are turned into a short circuit state with a lead wire connecting the electrode Gs and the grid G6. An A.C. voltage component 10a shaped in palabola applied to the grid G5 is thus not inducted to electrodes Gm1 and Gm2, and only appropriate D.C. voltage is applied to the electrodes Gm1 and Gm2.

公开(公告)号：JPH044545A

公开(公告)日：1992-01-09

申请号：JP10366990

申请日：1990-04-19

Applicant: TOSHIBA CORP

Inventor： HIROTA KOJI ,  SONE TOSHIHISA ,  SUGAWARA SHIGERU ,  KOSHIGOE SHINPEI

IPC: H01J29/48 ,  H01J29/50

Abstract: PURPOSE:To form a small beam spot with no distortion as desired, by locating No.3 electrode through position alignment of at least two tooling holes, or through detaining of at least two tooling holes with at least two tooling bosses. CONSTITUTION:At least two tooling holes 34, 25 for position alignment of No.3 electrode 30 relative to No.1 electrode G5 are formed in each of the No.1 and No.3 electrodes G5, 30; otherwise, at least two tooling holes 35 for locating the No.3 electrode relative to the No.1 electrode G5 are formed in either of the No.1 and No.3 electrodes G5, 30 wile at least two tooling bosses 41 to detain with these tooling holes are formed int the other. The No.3 electrode 30 is located through position alignment of these at least two holes 34, 35, or detention of at least two holes 35 with at least two tooling bosses 41. Thereby a small beam spot can be formed equipped with no distortion as desired.

公开(公告)号：JPH03283337A

公开(公告)日：1991-12-13

申请号：JP8354790

申请日：1990-03-30

Applicant: TOSHIBA CORP ,  TOSHIBA ELECTRONIC ENG

Inventor： HASEGAWA TAKAHIRO ,  KOSHIGOE SHINPEI ,  FUKUDA SHIGEO

IPC: H01J29/50 ,  H01J29/76

Abstract: PURPOSE:To improve deterioration of the focus characteristic of a color picture tube device at the center portion of a screen by varying the vertical-to-horizontal aperture ratio of a center beam through hole from that of each of a pair of side beam through holes. CONSTITUTION:The vertical-to-horizontal aperture ratio phiVC/phiHC of the center- beam through hole 28G of at least one electrode G3 of a pair of opposite electrodes G3, G4 constituting a main electron lens is made smaller (or larger) than that phiVS/phiHS of each of the pair of side beam through holes 28B, 28R of the electrode G, to which electrode G3 a relatively low or high voltage is applied. As a result, the form of the beam spot of each electron beam at the center portion of a screen generated by a magnetic field which a permanent magnet disposed between a deflecting device and the main electron lens generates is cancelled out and converted into almost a circle. The focus characteristic of a color picture tube device at the center portion of the screen is thus improved.

公开(公告)号：JPH03225733A

公开(公告)日：1991-10-04

申请号：JP27224790

申请日：1990-10-12

Applicant: TOSHIBA CORP

Inventor： TOKITA KIYOSHI ,  FUJIWARA TAKESHI ,  KOSHIGOE SHINPEI ,  HASEGAWA TAKAHIRO

IPC: H01J29/48 ,  H01J29/50

Abstract: PURPOSE:To obtain a better picture image on the whole surface of a picture plane by changing the strength of an electron lense with synchronizing with the deflection of an electron beam during one scanning period of the deflection scanning of the electron beam. CONSTITUTION:Prescribed voltage is supplied to intermediate electrodes 70 and 80 with a resistor 100, and a variable resistor 105 is connected to the lower end of the resistor 100 to permit the variation of the voltage of the electrodes 70 and 80. A main lense is formed with a fifth electrode 50, the intermediate electrodes 70 and 80, and a sixth electrode 60 to focus the electron beam on a picture plane. The curvature of an equpotential line in a vertical direction becomes smaller than that in a horizontal direction by the effect of the electrode 50 side wall, and a focussing action in the vertical direction becomes stronger than that in the horizontal direction. Consequently the changing of focusing voltage permits giving distortion, so as to offset deflection distortion, to the electron beam to obtain a better picture image in the whole surface of the picture plane.

公开(公告)号：JPS61183851A

公开(公告)日：1986-08-16

申请号：JP2362085

申请日：1985-02-12

Applicant: TOSHIBA CORP

Inventor： KOSHIGOE SHINPEI ,  FUJIWARA TAKESHI

IPC: H01J29/50

Abstract: PURPOSE:To prevent the thermal breakage of the resistance by using plural number of a support for supporting each electrode of an electron gun at least one support of which has a step in the longitudinal section so as to form a thin section and a thick section and by inserting the resistance into said thin section. CONSTITUTION:The electron gun comprises an electron-beam-producing part 5, a main lens part for focusing a beam which consists of electrodes 11-15, electrode supports 2a and 2b for the electrodes 11-15 and a thin-plate-like resistance 3. The longitudinal section of the electrode support 2b extending along the axis of the beam has a step 60 which divides the support 3b into a thin section and a thick section. The resistance 3 is attached to the thin section to apply necessary voltage to each electrode. Because of the above structure, it is possible to secure a sufficient space for the resistance 3 and therefore the resistance 3 can be large enough. Consequently, it is possible to effectually prevent the thermal breakage of the electron gun.

公开(公告)号：JPS6180738A

公开(公告)日：1986-04-24

申请号：JP20065684

申请日：1984-09-27

Applicant: Toshiba Corp

Inventor： KOSHIGOE SHINPEI

IPC: H01J29/48 ,  H01J9/18

CPC classification number: H01J9/18

Abstract: PURPOSE:To easily set opposing electrodes and auxiliary electrodes with high density by providing a staircase portion to the side wall of opposing electrode and providing spacers to such staircase portion. CONSTITUTION:A fourth grid 14 is inserted into three reference pins 50a, 50b, 50c. Next, a horseshoe shaped first spacer 81 is placed at the staircase portion of a fourth grid 14 and a horseshoe shaped second spacer 82 is placed on the first spacer 81. Next, the one of auxiliary electrodes 20 is inserted in such a way that an aperture is aligned with the staircase portion 801 of horseshoe shaped spacer 82, and the one auxiliary electrode is placed thereon. Next, a horseshoe shaped spacer 83 of the second staircase portion is placed so that it is aligned with the aperture of electrode and the first horseshoe shaped spacer 84 is placed thereon. Thereafter, these spacers are inserted so that the staircase portion of third grid 13 is aligned with the horseshoe shaped spacer. After pressurization, an electrode support rod which is partly thermally fused is bonded with pressure and is then hardened by cooling. Thereafter, first the first spacers 81, 84 are pulled and then spacers 82, 83 are pulled.

Abstract translation: 目的：通过在对置电极的侧壁上设置一个阶梯部分，并将间隔件提供给这种阶梯部分，以便容易地设置高密度的相对电极和辅助电极。 构成：将第四栅极14插入三个基准销50a，50b，50c。 接下来，将马蹄形的第一间隔件81放置在第四格栅14的阶梯部分，并且将马蹄形的第二间隔件82放置在第一间隔件81上。接下来，辅助电极20中的一个以这样的方式插入： 孔与马蹄形间隔件82的阶梯部分801对准，并且一个辅助电极放置在其上。 接下来，放置第二阶梯部分的马蹄形间隔件83，使其与电极的孔对准，并且将第一马蹄形间隔件84放置在其上。 此后，插入这些间隔件，使得第三格栅13的阶梯部分与马蹄形间隔件对准。 加压后，部分热熔接的电极支撑杆被压力接合，然后通过冷却而硬化。 此后，首先拉动第一间隔件81,84，然后拉出间隔件82,83。

公开(公告)号：JPS59160945A

公开(公告)日：1984-09-11

申请号：JP3377883

申请日：1983-03-03

Applicant: Toshiba Corp

Inventor： SHIMOMA TAKETOSHI ,  KOSHIGOE SHINPEI ,  FUJIWARA TAKESHI

IPC: H01J29/48 ,  H01J29/88

CPC classification number: H01J29/88

Abstract: PURPOSE:To prevent any convergence shifts by stabilizing the electric potential of the inner surface of the neck and electric charges existing on the surface of a bead glass by providing two conductive films near a gap between electrodes which form a main electron lens in such a manner that said conductive films face each other. CONSTITUTION:The third to the fifth grids 23, 24 and 25 are used to form an auxiliary electron lens. The fifth and the sixth grids 25 and 26 are used to form a main electron lens. The auxiliary electron lens and the main electron lens are called a main electron lens system and focus an electron beam on the picture screen of a picture tube. On an area of the inner surface of the neck corresponding to the fifth grid 25, a neck conductive film 32 is formed which is extended to around an area of the inner surface of the neck corresponding to a gap between the fifth and the sixth grids 25 and 26. Facing the neck conductive film 32, a bead-glass conductive film 31 is formed on the surface of a bead glass 27 near the gap between the fifth and the sixth grids 25 and 26. The bead-glass conductive film 31 is electrically connected to a conductive lead wire 30, which is wound around the bead glass 27 and connected to the fifth grid 25, such as a stainless weire for example.

Abstract translation: 目的：为了通过在形成主电子透镜的电极之间的间隙附近提供两个导电膜来稳定颈部内表面的电位和存在于珠粒玻璃表面上的电荷来防止任何会聚偏移 所述导电膜彼此面对。 构成：第三至第五栅极23,24和25用于形成辅助电子透镜。 第五和第六栅极25和26用于形成主电子透镜。 辅助电子透镜和主电子透镜称为主电子透镜系统，并将电子束聚焦在显像管的画面上。 在对应于第五格栅25的颈部的内表面的区域上形成颈部导电膜32，颈部导电膜32延伸到对应于第五和第六格栅25之间的间隙的颈部内表面的区域周围 面对颈部导电膜32，在第五和第六栅极25和26之间的间隙附近的珠粒玻璃27的表面上形成珠玻璃导电膜31.珠玻璃导电膜31是电 连接到导电引线30，该导线30围绕珠玻璃27缠绕并连接到例如不锈钢的第五栅极25。

公开(公告)号：JPH11144640A

公开(公告)日：1999-05-28

申请号：JP31009997

申请日：1997-11-12

Applicant: TOSHIBA CORP

Inventor： KOSHIGOE SHINPEI ,  OKUBO SHUNJI

IPC: H01J29/50

Abstract: PROBLEM TO BE SOLVED: To provide a color picture tube electron gun capable of maintaining flatness around an electron beam passing hole and allowing interval between electrodes to be a predetermined one easily. SOLUTION: In a color picture tube electron gun, around multiple electron beam passing holes 20 formed on the principal plane opposite to an adjacent electrode of at least one of multiple electrodes, projecting parts 21, each having a flat top face raised at a height of 0.05-0.5 mm in the direction of the adjacent electrode, are formed, independently of one another.

公开(公告)号：JPH065225A

公开(公告)日：1994-01-14

申请号：JP16320392

申请日：1992-06-23

Applicant: TOSHIBA CORP ,  TOSHIBA ELECTRONIC ENG

Inventor： HASEGAWA TAKAHIRO ,  KOSHIGOE SHINPEI ,  FUKUDA SHIGEO

IPC: H01G2/20 ,  H01J29/48 ,  H01J29/50 ,  H01J29/96 ,  H01G1/13

Abstract: PURPOSE:To provide a cathode ray tube with a capacitor free from creeping discharge by a relatively simple means, by giving a special structure to the capacitor connected to at least one electrode of a main lens excluding an electrode to which dynamic focus voltage is applied. CONSTITUTION:A cathode ray tube provided with an electron gun is such that dynamic focus voltage in synchronization with a deflection current flowing in a deflecting yoke is applied to one of electrodes constituting a main lens and a capacitor 34 to bypass AC voltage components induced by applying the dynamic focus voltage is connected to at least one electrode Gm1 excluding an electrode G5 to which this voltage is applied. The capacitor 34 consists of a dielectric 43 and thin film electrodes 44, 45 opposed each other across the dielectric 43. The dielectric 43 is formed with a portion not placed between the thin film electrodes 44, 45 thicker than a portion placed between the thin film electrodes 44, 45 (t1>t2).

公开(公告)号：JPH04147545A

公开(公告)日：1992-05-21

申请号：JP27120990

申请日：1990-10-09

Applicant: TOSHIBA CORP ,  TOSHIBA ELECTRONIC ENG

Inventor： KOSHIGOE SHINPEI ,  FUJIWARA TAKESHI ,  HASEGAWA TAKAHIRO ,  FUKUDA SHIGEO

IPC: H01J29/48 ,  H01J29/50

Abstract: PURPOSE:To improve image dissection of a central part and a peripheral part of a faceplate by locating a focusing electrode, multiple intermediate electrodes, a final accelerating electrode in order from an electron beam generating unit side to a target direction to form an electron gun, and dividing the high voltage to be supplied to the final accelerating electrode with a resistor to supply a predetermined voltage to the intermediate electrodes. CONSTITUTION:In an electron gun 26, a resistor 32 is located, and one end of the resistor 32 is connected to a sixth electrode G6, and the other end thereof is grounded through a stem pin 34 passing through a stem 33, which seals a neck end of a color image receiving tube, and through a variable resistor 35 outside of the tube, and intermediate parts thereof are connected to two intermediate electrodes Gm1, Gm2. In the electron gun 26, the voltage lower than that of the intermediate electrode Gm2 of the sixth electrode G6 side is applied to the intermediate electrode Gm1 of a fifth electrode G5 side to form a focusing electric field near the intermediate electrode Gm1. Furthermore, a curvature in the vertical direction is large in the intermediate electrode Gm1, and electron beams receive the focusing work relatively strong in the vertical direction near the intermediate electrode Gm1. Consequently, when the electron gun 26 is used to form a color image receiving tube, a beam spot 4a on the central part of the faceplate 3 can be formed nearly circular.