公开(公告)号：JPH01236553A

公开(公告)日：1989-09-21

申请号：JP6186988

申请日：1988-03-17

Applicant: TOSHIBA CORP

Inventor： SHIMOMA TAKETOSHI ,  KOSHIGOE SHINPEI ,  HASEGAWA TAKAHIRO ,  TAKAGI MASAKAZU

IPC: H01J29/48 ,  H01J29/50 ,  H01J29/96

Abstract: PURPOSE:To provide vertical and horizontal adjustability for an electron beam spot substantially independently from each further by forming an asymmetrical converging electric field stronger in the vertical direction than in the horizontal direction. CONSTITUTION:Converging electric field penetrating No.5 electrode 50 has a common isopotential line for the central hole 542 and side holes 541, 543. The radius of curvature of the isopotential line in the vertical direction becomes smaller than in the horizontal direction because of influence of side walls 55 of electrode. That is, the converging effect in the vertical direction becomes relatively stronger than in the horizontal direction. In the same manner the dispersive electric field penetrating No.6 electrode 60 in the vertical direction becomes relatively stronger than in the horizontal direction. Thereby coordination of the vertical and horizontal directions of electron beam is not needed at the time of focus adjustment, and the two directions can be adjusted substantially independently.

公开(公告)号：JPH01232643A

公开(公告)日：1989-09-18

申请号：JP5758188

申请日：1988-03-11

Applicant: TOSHIBA CORP

Inventor： SHIMOMA TAKETOSHI ,  KOSHIGOE SHINPEI ,  HASEGAWA TAKAHIRO

IPC: H01J29/48 ,  H01J29/50 ,  H01J29/96

Abstract: PURPOSE:To enhance the resolution at the peripheries of the screen without causing drop of the resolution in the center of screen by impressing on those of the electrodes constituting focusing electrode which are not impressed with the focusing voltage through a resistor in which the focusing voltage is arranged within the tube. CONSTITUTION:Focusing voltage is impressed on No.1 focusing electrode 13a through a resistor 16 after being impressed on No.2 focusing electrode 13b. While electron beam is situated in the center of the screen, the No.1 focusing electrode 13a and No.2 focusing electrode 13b are at the same potential, and meantime no four-polar lens is formed and therefore the electron beam is focused by a main lens. When the electron beam is deflected to the peripheries of the screen, on the other hand, a potential difference is generated between the No.1 and No.2 focusing electrodes 13a, 13b, and meantime a four-polar lens is formed and therefore the electron beam receives the focusing effect horizontally from this four-polar lens and the main lens and receives dispersion effect in the vertical direction. Accordingly strain as overconvergence in the vertical direction due to deflection abberation can be eliminated with only the electron beam in vertical direction as insufficient convergence.

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：JPS61171037A

公开(公告)日：1986-08-01

申请号：JP993485

申请日：1985-01-24

Applicant: TOSHIBA CORP

Inventor： KANBARA EIJI ,  FUJIWARA TAKESHI ,  HASEGAWA TAKAHIRO

IPC: H01J29/50

Abstract: PURPOSE:To prevent the thermal breakdown of a resistor for applying potential to the electrode of an electron gun, by laying the resistor to place the direction of its width in parallel with that of inline disposition to enable the enough increase in the surface area of the resistor. CONSTITUTION:An electron gun 1 comprises a group of electrodes, two supports 2a, 2b for the group of electrodes, and a resistor 3 for applying prescribed potential to at least on electrode. The resistor 3 is laid beside one support 2b to place the direction of the width of the resistor in parallel with that of inline disposition to enable the increase in the surface area of the resistor or a radiator. For that reason, the resistor 3 can be protected from thermal breakdown even if an electrical current large enough to neglect the effect of an undesired current such as a leakage current between the electrodes is caused to flow through the resistor.

公开(公告)号：JPS61147443A

公开(公告)日：1986-07-05

申请号：JP26734884

申请日：1984-12-20

Applicant: TOSHIBA CORP

Inventor： KANBARA EIJI ,  HASEGAWA TAKAHIRO

IPC: H01J29/48 ,  H01J29/50 ,  H01J29/96

Abstract: PURPOSE:To form a long resistor having a sufficient surface area, prevent its thermal destruction, and allow it to be installed in a cathode-ray tube without changing the structure of a conventional electron gun by forming the resistor spirally around an insulating substrate. CONSTITUTION:The surface of a columnar insulator bar 60 is spirally coated with a resistance material 61, and it is thinly coated 63 with an insulator to form a columnar resistor capable of securing the surface area for heat radiation. A rectangular section 64 is an electrode takeoff section. A columnar ceramic bar coated with mainly palladium, ruthenium-series oxide and coated with glass is preferable for such resistor. Since the resistor 3 has a columnar structure, it can be arranged in a sector space 100 constituted with the second insulating supporter 2b, individual electron gun electrodes, and the inner wall of a neck 19.

公开(公告)号：JPS6180737A

公开(公告)日：1986-04-24

申请号：JP20065784

申请日：1984-09-27

Applicant: Toshiba Corp

Inventor： KANBARA EIJI ,  NISHIMURA KOJI ,  HASEGAWA TAKAHIRO

IPC: H01J29/48 ,  H01J29/50

CPC classification number: H01J29/484

Abstract: PURPOSE:To obtain a cathode-ray tube which prevents deterioration of voltage resistance by intensified electric field and assures practical use by adequately setting length between electrode leadout portions and total length of resistance body by changing sectional area or resistivity of resistance material of resistance body at least between two electrode leadout portions. CONSTITUTION:Resistance values R1, R2, R3, R4 between electrode leadout portions of a resistance body 5 are equal but resistivities p1, p2, p3, p4 between electrode leadout portions of resistance body 4 are different. Therefore, lengths between electrode leadout portions l1, l2, l3, l4 are also different. The first electrode leadout portion 52 is set to the same position as a fifth grid 15, the second electrode leadout portion 53 as a fourth grid and the third electrode leadout portion 54 as a third grid 13 in the direction of Z axis. Thereby, an intensified field region by resistance body is not particularly generated within the neck and there is not fear of deterioration in voltage resistance.

Abstract translation: 目的：为了获得阴极射线管，其通过强化电场防止耐电压劣化，并且通过改变电阻体的电阻材料的截面积或电阻率来适当地设定电极引出部分之间的长度和电阻体的总长度来确保实际使用 至少在两个电极引出部分之间。 构成：电阻体5的电极引出部之间的电阻值R1，R2，R3，R4相等，但电阻体4的电极引出部之间的电阻p1，p2，p3，p4不同。 因此，电极引出部分11，12，13，14之间的长度也不同。 第一电极引出部52被设定为与第五栅极15相同的位置，第二电极引出部53作为第四栅极，第三电极引出部54在Z轴方向上设置为第三栅极13。 因此，在颈部内部并不特别产生由电阻体形成的强化场区，不会产生耐电压恶化的担心。

公开(公告)号：JPS6171535A

公开(公告)日：1986-04-12

申请号：JP19069484

申请日：1984-09-13

Applicant: Toshiba Corp

Inventor： SHIMOMA TAKETOSHI ,  KANBARA EIJI ,  HASEGAWA TAKAHIRO

IPC: H01J29/48 ,  H01J29/96

CPC classification number: H01J29/96

Abstract: PURPOSE:To insert a sufficiently large resistor by forming the electrode supporter of an electron gun to have a staircase in sectional shape having a thin portion and a thick portion, which is perpendicular to an advancing direction of an electron beam, and positioning a resistor in the thin portion. CONSTITUTION:The electron gun of a cathode ray tube etc. is composed of an electron beam generating portion, a main lens portion consisting of a plurality of electrodes for focusing an electron beam on a given target and a plurality of electrode supporters for supporting them. At this time, one 2b of the electrode supporters 2a and 2b into which the straps 31 and 32 of the electrodes are embedded is formed to have a staircase in sectional shape having a thin portion and a thick portion, which is perpendicular to an advancing direction of the electron beam, and a thin plate-like resistor 3 is mounted on the thin portion to supply the divided voltage of the resistor to the electrodes. Accordingly, it is possible to sufficiently increase the surface area of the resistor 3 to prevent the breakage due to heat and to improve the reliability.

Abstract translation: 目的：通过形成电子枪的电极支架来插入足够大的电阻器，使其具有与电子束的前进方向垂直的薄壁部分和厚壁部分的截面形状的阶梯，并将电阻器定位在 薄薄的部分。 构成：阴极射线管等的电子枪由电子束发生部分，由多个电极组成的主透镜部分和用于支撑它们的多个电极支撑体组成。 此时，电极支撑体2a和2b的一部分2b，电极的带31和32嵌入其中，形成为具有薄壁部分和与推进方向垂直的薄壁部分的厚度部分的截面形状的阶梯 的电子束，并且薄板状电阻器3安装在薄部分上，以将电阻器的分压提供给电极。 因此，可以充分地增加电阻器3的表面积，以防止由于热而导致的断裂并提高可靠性。

公开(公告)号：JP2003051265A

公开(公告)日：2003-02-21

申请号：JP2002149517

申请日：2002-05-23

Applicant: Toshiba Corp ,  株式会社東芝

Inventor： ODA HIROYUKI ,  KIMIYA JUNICHI ,  HASEGAWA TAKAHIRO

IPC: H01J29/48

CPC classification number: H01J29/485 ,  H01J2229/481

Abstract: PROBLEM TO BE SOLVED: To provide cathode-ray tube equipment, which has high proper value and reliability, by suppressing generation of abnormal sounds.
SOLUTION: A dynamic focusing electrode G3-1 is equipped with vibration suppressing parts 33 and 34 by beading processing in the circumference of a electronic beam passage hole 32, a plate surface, a planted part, or the like. As a result of this, the vibration of the dynamic focus electrode G3-1 is suppressed.
COPYRIGHT: (C)2003,JPO

Abstract translation: 要解决的问题：通过抑制异常声音的产生来提供具有高适当值和可靠性的阴极射线管设备。 解决方案：动电聚焦电极G3-1​​通过在电子束通孔32，板表面，种植部件等的周围的波纹处理而配备有振动抑制部33和34。 其结果是抑制了动态聚焦电极G3-1​​的振动。

公开(公告)号：JPH11195389A

公开(公告)日：1999-07-21

申请号：JP75998

申请日：1998-01-06

Applicant: TOSHIBA CORP

Inventor： HASEGAWA TAKAHIRO ,  SUGAWARA SHIGERU ,  SUZUKI FUMITO

IPC: H01J29/88 ,  H01J29/48 ,  H01J29/50

Abstract: PROBLEM TO BE SOLVED: To provide a color picture tube provided with an electron gun capable of suppressing a convergence drift by the neck potential to form the main lens part having favorable lens performance. SOLUTION: For at least part of an inter-electrode gap (g) between a fifth electrode 50 and a sixth electrode 60 composing the main lens part of an electron gun structural body, preferably 70% of the inter-electrode gap (g) or more, it is covered with a high resistance film 350 connected to an internal conductive film 300 at one end, and formed on an inner wall of a neck 5. Charge-up of the neck inner wall is thus reduced, and potential penetration to the main lens part by a neck inner wall potential can be suppressed.

公开(公告)号：JPH09320483A

公开(公告)日：1997-12-12

申请号：JP13316996

申请日：1996-05-28

Applicant: TOSHIBA CORP

Inventor： SUZUKI FUMITO ,  HASEGAWA TAKAHIRO ,  SUGAWARA SHIGERU ,  KIMIYA JUNICHI

IPC: H01J29/48 ,  H01J29/96 ,  H01J29/50

Abstract: PROBLEM TO BE SOLVED: To provide an electron gun which can restrain both field emission from the connection part of a resistor with grids and the destruction of the resistor. SOLUTION: In the electron gun for a cathode-ray tube, its main electron lens part ML is provided at least with a first, a second and third grid G3, G5 and G6, which are disposed in order toward the target direction, and with a fourth grid G7 to which anode voltage is applied. In this case, the second and third grids are laid adjacently, dynamic focus voltage which is changed while being synchronized with the deflection of electron beams, is applied to the first and third grids, and it is so structured that the first and second grids are thereby connected with each other by a resistor 24 disposed nearby.