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：JPH03171537A

公开(公告)日：1991-07-25

申请号：JP31024989

申请日：1989-11-29

Applicant: TOSHIBA CORP

Inventor： HASEGAWA TAKAHIRO ,  SUGANO SHIGERU

IPC: H01J29/90

Abstract: PURPOSE:To prevent the color-purity drift of a picture due to the variation of the cathode voltage of a picture tube by connecting a metalic pin provided between a stem pin to be connected to a focusing electrode and an adjacent stem pin to another stem pin to be grounded. CONSTITUTION:When a metalic pin 41 projecting only inside with no outer lead wire is arranged between a stem pin 37a to be connected to 3rd grid G3, a focusing electrode, and an adjacent stem pin 37b, the stem pin 37a and the metalic pin 41 are electrically connected to each other through an electrostatic capacity 45 generated between them. Therefore, even if an AC voltage component of a dynamic focusing voltage applied to the stem pin 37a is leaked to the metalic pin 41 through the electrostatic capacity 45, because of the grounded potential of the pin 41, the leaked dynamic voltage can be shielded from the stem pin 37b, hence even when the cathode is connected to the adjacent stem pin 37b, the drift of the color balance of three colors of pictures due to cathode voltage variations generated by leaked AC voltage components can be prevented.

公开(公告)号：JPS6139339A

公开(公告)日：1986-02-25

申请号：JP15861384

申请日：1984-07-31

Applicant: Toshiba Corp

Inventor： HASEGAWA TAKAHIRO

IPC: H01J9/18 ,  H01J29/50

CPC classification number: H01J9/18 ,  H01J2209/185

Abstract: PURPOSE:To prevent the deformation of spacers to obtain an accurate distance between electrodes by providing convex portions in the long side of two sets of spacers which are inserted into auxiliary electrodes and pressing from one direction to set a space between the third grid electrode and the fourth grid electrode. CONSTITUTION:An electron gun is assembled by inserting the fourth grid electrode 24 into a jig 56, using three center rods 50 as a reference, and next inserting auxiliary rods 26a, 26b in which spacers 57, 58 provided with convex portions in the long side portion of the both sides are inserted into the opening of the side wall into the jig 56, using four side rods 55 as a reference, and further inserting the third grid electrode 23, a spacer 53, the second grid 12, a spacer 54 and the first grid 11, and applying pressure from the upwardness to weld the flange portion of the auxiliary electrode 26, and fixing them by means of an electrode supporter 2. Thus, it is possible to increase the strength of the spacers 57, 58 to prevent the deformation of the spacers and to accurately give the distance between the third grid electrode 23 and the fourth grid electrode 24 to given value.

Abstract translation: 目的：为了防止间隔物的变形，通过在插入辅助电极的两组间隔物的长边中设置凸起部分并从一个方向按压以在第三格栅电极和第三栅电极之间设置空间， 第四栅极。 构成：使用三个中心杆50作为基准，将第四栅极24插入夹具56中，然后插入辅助杆26a，26b，组装电子枪，其中在长边设置有凸部的间隔件57,58 使用四个侧杆55作为参考，将两侧的一部分插入到侧壁的开口中，并进一步插入第三栅极23，间隔件53，第二栅极12，间隔件54和 第一格栅11，并且从向上施加压力以焊接辅助电极26的凸缘部分，并且通过电极支撑件2固定它们。因此，可以增加间隔件57,58的强度，以防止 间隔件的变形，并将第三栅电极23和第四栅电极24之间的距离精确地赋予给定值。

公开(公告)号：JP2003249179A

公开(公告)日：2003-09-05

申请号：JP2002050128

申请日：2002-02-26

Applicant: TOSHIBA CORP

Inventor： KIMIYA JUNICHI ,  HASEGAWA TAKAHIRO ,  OKUBO SHUNJI

IPC: H01J29/48

Abstract: PROBLEM TO BE SOLVED: To provide a cathode-ray tube device capable of reducing abnormal sound from an electron-gun structure. SOLUTION: A dynamic focus electrode and at least one electrode G4 placed adjacent to the dynamic focus electrode has at least a metal oxide films 100 formed on the surface of an implanted part G4P which is implanted in a insulating supporting member 21. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2002298754A

公开(公告)日：2002-10-11

申请号：JP2001094163

申请日：2001-03-28

Applicant: TOSHIBA CORP

Inventor： HASEGAWA TAKAHIRO

IPC: H01J29/48

Abstract: PROBLEM TO BE SOLVED: To provide a cathode-ray tube device capable of giving an excellent resolution uniform over the whole screen area and suppressing abnormal noise emission during the operation. SOLUTION: An electron gun structure 7 is furnished with at least one dynamic focus electrode G3 to admit impression of a dynamic focus voltage prepared by superposing an AC voltage component varying synchronously with the deflection of an electron beam on a DC voltage component and at least one electrode G4 confronting the dynamic focus electrode G3, and mechanisms 70 and 71 cancel the forces interacting between these electrodes.

公开(公告)号：JP2002190260A

公开(公告)日：2002-07-05

申请号：JP2001273826

申请日：2001-09-10

Applicant: TOSHIBA CORP

Inventor： HASEGAWA TAKAHIRO ,  KIMIYA JUNICHI ,  OKUBO SHUNJI ,  ODA HIROYUKI

IPC: H01J29/48 ,  H01J29/50 ,  H01J29/51

Abstract: PROBLEM TO BE SOLVED: To provide a cathode-ray tube device which enables to obtain superior resolution uniform over the entire screen by reducing the difference between the focusing power of lens action which acts on a central beam and a side beam, respectively. SOLUTION: The main lens of an electron gun structure consists of a sixth grid G6, a seventh grid GM1, an eighth grid GM2 and a ninth grid G9. In the region toward the cathode from the main lens, an asymmetrical lens is formed between a fifth grid G5 and the sixth grid G6, which has asymmetry in lens action to an electron beam in the horizontal direction and the vertical direction as well as has a lens power changing in synchronizing with the electron beam deflection. The asymmetrical lens has asymmetry to the central beam which is different from that to the side beam.

公开(公告)号：JPH11144649A

公开(公告)日：1999-05-28

申请号：JP30711997

申请日：1997-11-10

Applicant: TOSHIBA CORP

Inventor： SUZUKI FUMITO ,  SUGAWARA SHIGERU ,  HASEGAWA TAKAHIRO

IPC: H01J29/88 ,  H01J31/20

Abstract: PROBLEM TO BE SOLVED: To provide a cathode-ray tube having an excellent breakdown voltage characteristic that is equipped with a high-resistance conductive film to suppress the convergence drift at the inside wall of its neck, and is capable of suppressing the field emission between a metal part such as an electrode of an electron gun or the like and the inside wall of the neck. SOLUTION: An inner conductive film 117 is formed by coating on the inside wall of a neck part 105 of a cathode-ray tube, and a high-resistance conductive film 114 having resistance higher than that of the inner conductive film 117 is so placed as to come in contact with one end of the inner conductive film 117 and cover part of the neck part 105 in which an electron gun 107 is installed. The resistance value per unit length in the tube-axis direction, in the vicinity of the end of the inner conductive film 117, of one end side of the high-resistance conductive film 114 in contact with the inner conductive film 117 is set smaller than that in the vicinity of the other end 116 of the high-resistance conductive film 114.

公开(公告)号：JPH1145669A

公开(公告)日：1999-02-16

申请号：JP20336497

申请日：1997-07-29

Applicant: TOSHIBA CORP

Inventor： HASEGAWA TAKAHIRO

IPC: H01J29/50

Abstract: PROBLEM TO BE SOLVED: To provide a cathode-ray tube with stable withstand voltage property and its manufacture capable of preventing the deterioration of withstand voltage property due to increasing potential on the inner face of a neck. SOLUTION: For a cathode-ray tube, an electron gun 7 sealed in a neck 2 has plural electrodes G1, G2 to form an electron beam generator and plural electrodes G3 G6 to form a main lens for focusing electron beams 6B, 6G, 6R from the electron beam generator on a fluorescent screen 4, metal wires 13a, 13b mounted on one, to which relatively low voltage is applied, of the electrodes to form the main lens and the metal evaporated films of the metal wires formed on the inner face of the neck opposed to the metal wires. The metal wires are formed of magnetic material.

公开(公告)号：JPH10134739A

公开(公告)日：1998-05-22

申请号：JP29018096

申请日：1996-10-31

Applicant: TOSHIBA CORP

Inventor： SUGAWARA SHIGERU ,  HASEGAWA TAKAHIRO ,  SUZUKI FUMITO

IPC: H01J29/48 ,  H01J29/88 ,  H01J31/20

Abstract: PROBLEM TO BE SOLVED: To provide a color cathode-ray tube free of color displacement due to a convergence drift and having sufficient reliability. SOLUTION: In a range from at least temperature from 20 deg.C to 40 deg.C, a resistance value R at T deg.C has resistance temperature characteristics of d (Log R(T))/dT >=-0.01 and is about 5×10 Ω or less at about 25 deg.C, and a high resistance membrane 14 with about 1×10 Ω or more is provided on an inner wall of a neck 3 within a temperature range during operation of the cathode-ray tube.

公开(公告)号：JPH08315750A

公开(公告)日：1996-11-29

申请号：JP12363795

申请日：1995-05-23

Applicant: TOSHIBA CORP

Inventor： HASEGAWA TAKAHIRO

IPC: H01J9/44 ,  H01J9/18 ,  H01J29/48 ,  H01J29/50

Abstract: PURPOSE: To improve the withstand voltage characteristic of a color picture tube to supply prescribed voltage to a prescribed electrode of an electron gun through a resistor. CONSTITUTION: A color picture tube inside which an electron gun 17 whose main lens part is composed of a focusing electrode, an intermediate electrode and a final accelerating electrode and a resistor 7 to supply prescribed voltage to the intermediate electrode by dividing high voltage to be supplied to its final accelerating electrode are arranged, is provided. The final accelerating electrode and the intermediate electrode are electrically connected to each other by a shape memory alloy member 29 which does not release electric continuity at a temperature or less added in a manufacturing process of the color picture tube and is restored to a shape of releasing electric continuity at the temperature or more, and this shape memory alloy member is formed as a structure installed in a condition of being restored to a shape of releasing electric continuity to either one of the final accelerating electrode and the intermediate electrode.