公开(公告)号：JPS6129052A

公开(公告)日：1986-02-08

申请号：JP14861984

申请日：1984-07-19

Applicant: Toshiba Corp

Inventor： TOKITA KIYOSHI ,  NAKANE KAZUNORI

IPC: H01J29/94

CPC classification number: H01J29/94

Abstract: PURPOSE:To provide sufficient gas adsorption ability without deterioration of other cathode-ray tube characteristics by connecting the final electrode on fluorescent face side of an electron gun tip to a neck getter through a thermal buffer unit. CONSTITUTION:A neck getter 20 containing nitride is connected to the tip portion of an electron gun 6. And this neck getter 20 is forther connected to the electron gun 6 through a thermal buffer unit 40. The buffer unit 40 is connected thereto by a supporting unit 41 and formed in an annular body so as to surround passing ara of electronic beam 8B, 8G, 8R, and made of such a material that can be subjected to induction heating and that is non-magnetic, e.g. stainless. Such a getter 20 can be heated to evaporate by heating with a toroidal magnetic field 31 generated from a toroidal coil 30 concentrically arranged. Thus, sufficient gas adsorption ability can be obtained and other cathode-ray tube characteristics are prevented from deterioration.

Abstract translation: 目的：通过将电子枪头的荧光面上的最终电极通过热缓冲单元连接到颈部吸气剂，以提供足够的气体吸附能力而不劣化其它阴极射线管特性。 构成：含有氮化物的颈部吸气剂20连接到电子枪6的尖端部分。该颈部吸气剂20通过热缓冲单元40另外连接到电子枪6.缓冲单元40通过支撑 单元41并且形成在环形体中，以便围绕电子束8B，8G，8R的通过ara，并且由能够进行感应加热且非磁性的材料制成，例如 不锈钢 这样的吸气剂20可以通过同心地布置的由环形线圈30产生的环形磁场31加热而被加热以蒸发。 因此，可以获得足够的气体吸附能力，并且防止其他阴极射线管特性劣化。

公开(公告)号：JPS59165351A

公开(公告)日：1984-09-18

申请号：JP3743883

申请日：1983-03-09

Applicant: Toshiba Corp

Inventor： TOKITA KIYOSHI ,  SONE TOSHIHISA ,  NAKAMURA MICHIO

IPC: H01J29/86

CPC classification number: H01J29/861 ,  H01J2229/862

Abstract: PURPOSE:To reduce curvature in the vertical direction while suppressing substantially a color shift by setting the specific relations among the curvature including a vertical axis, the curvature including a horizontal axis and the curvature including a diagonal axis of the glass panel inner surface. CONSTITUTION:Assuming that the panel curvature of the screen part in the vertical axis direction (1-2v) is (Rp-v), that of the screen part in the diagonal axis direction (1-2D) is (Rp-D) and that of the screen part in the horizontal axis direction (1-2H) is (Rp-H), it is so constituted that the relations of said panel curvature shall be (Rp-v)

Abstract translation: 目的：通过设定包括纵轴在内的曲率的特定关系，包括水平轴的曲率和包括玻璃面板内表面的对角轴的曲率，来减小垂直方向上的曲率，同时基本上抑制色移。 构成：假设屏幕部分的垂直轴方向（1-2v）的面板曲率为（Rp-v），则对角轴方向（1-2D）的屏幕部分的面板曲率为（Rp-D）， 水平轴方向（1-2H）的屏幕部分为（Rp-H），其面板曲率的关系为（Rp-v）<（Rp-H）<（Rp-H） D）。 因此，作为前一掩模的主要因素的垂直轴方向上的有效部分的掩模曲率（Rm-v）可以接近于掩模曲率（Rm-H）和（Rm-D） 横轴方向或对角轴方向。 对于使用这样的荫罩的彩色显像管，与以往的情况相比，显着地减少了由于电子束的拍摄碰撞引起的荫罩有效部分的热膨胀所引起的掩模隆起量。

公开(公告)号：JPH0417238A

公开(公告)日：1992-01-22

申请号：JP11868390

申请日：1990-05-10

Applicant: TOSHIBA CORP

Inventor： INOUE MASACHIKA ,  TOKITA KIYOSHI ,  FUJIWARA TAKESHI

IPC: H01J29/48 ,  H01J29/56 ,  H01J29/70 ,  H01J29/76

Abstract: PURPOSE:To correct deflection aberration of an electron beam caused by a magnetic field of a deflector so as to enhance a focusing characteristic in the peripheral portion of a screen by disposing an annular permanent magnetic device provided with eight-pole magnetic field therearound on the passageway of a three-electron beam between the deflector and the electron lens portion of an electron gun structure. CONSTITUTION:An annular permanent magnet device 28 having eight magnetic poles therearound is disposed on the passageway of a three-electron beam between a deflector 21 and the electron lens portion of an electron gun structure 20. Namely, independent formation of the magnetic poles on the annular permanent magnet device makes difficult directional shift of a line of a magnetic force at the time of magnetization so that the magnetic poles can be positioned precisely with respect to the deflector 21, thereby generating an axially symmetrical magnetic field. An electron beam can be prevented from becoming elliptic caused by a barrel magnetic field of a second deflection coil 25 and inclination of a pair of side beams can be effectively corrected without exerting any adverse effect on a convergence characteristic of the three-electron beam.

公开(公告)号：JPH0410326A

公开(公告)日：1992-01-14

申请号：JP11117390

申请日：1990-04-26

Applicant: TOSHIBA CORP ,  TOSHIBA ELECTRONIC ENG

Inventor： NAKANE KAZUNORI ,  TOKITA KIYOSHI ,  INOUE MASACHIKA ,  FUKUOKA AKIRA

IPC: H01J9/14 ,  H01J9/22

Abstract: PURPOSE:To assemble a shadow mask into the inside of a panel accurately by engaging three elastic supporting members in a predetermined shape with three stud pins to be locked, and supporting a shadow mask inside of a panel temporarily, and thereafter, welding the shadow mask integrally at a panel opening side end of lock parts where a connection and fixation part is engaged with a stud pin for lock. CONSTITUTION:Each nearly v-shaped elastic supporting member 31a in the integral structure is welded to each outside face of three corners of a mask frame 7, and a connection and fixation part 36, which consists of a fixation part 32b and a connection part 34b connected integrally with each other and for forming a nearly z-shaped elastic supporting member 31b, is welded to the residual one corner. A shadow mask 5 is supported temporarily inside of a panel 2 by three nearly v-shaped elastic supporting members 31a, and a locking part 33b forming the nearly z-shaped elastic supporting member 31b is engaged for lock with the stud pin 30 facing to the connection and fixation part 36, and they are welded at an opening side end 37 of the panel 2. A universal member of panel and mask is thereby assembled accurately, and workability of the assembly can be improved.

公开(公告)号：JPH03129647A

公开(公告)日：1991-06-03

申请号：JP26515589

申请日：1989-10-13

Applicant: TOSHIBA CORP

Inventor： OHAMA SHINJI ,  TOKITA KIYOSHI

IPC: H01J29/88

Abstract: PURPOSE:To heighten the mechanical strength of a vacuum envelope made of glass without thickening the wall of the glass by providing the vacuum envelope with a covering layer that generates stress strain due to the difference of coefficient of thermal expansion. CONSTITUTION:An inner conductive film 33 of coefficient of thermal expansion smaller than that of glass from which a glass envelope comprising a panel 10 and a funnel 11 is made is formed on the inner wall surface 32 of the funnel from the neck portion 14 of the funnel 11 to near the junction face 23 of the funnel 11 and the panel 10. The inner conductive film 33 provides compressive stress to the surface of the glass envelope comprising the panel 10 and the funnel 11, thereby effectively attenuating tensile stress generated during high temperature treatment.

公开(公告)号：JPH03102745A

公开(公告)日：1991-04-30

申请号：JP24158889

申请日：1989-09-18

Applicant: TOSHIBA CORP

Inventor： FUJIWARA TAKESHI ,  TOKITA KIYOSHI ,  INOUE MASACHIKA

IPC: H01J29/76

Abstract: PURPOSE:To improve the spot form of electron beams by locating a pincushion type magnetic field correcting device for generating the magnetic field inclined to the opposite direction of an electron gun against a tube axis in the electron gun side of a deflecting device. CONSTITUTION:In a color picture tube for deflecting multiple beams 6B, 6G, 6R to the arrangement direction thereof and the direction transverse to the arrangement direction, a pincushion type magnetic field correcting device 24 for generating the magnetic field inclined to the opposite direction of an electron gun 7 against a tube axis and for weakening the magnetic field component in the direction parallel with a tube axis of the barrel type deflecting magnetic field to be formed in an electron gun side end 23 by a second deflecting coil 25 is located in an electron beam passing area of the electron gun 7 side of a deflecting device 9. The distortion that the magnetic field component in the direction parallel with the tube axis of the vertical deflecting rear magnetic field of the deflecting device 9 gives a spot of the electron beam can thereby be corrected, and the beam spot form in the end of a vertical axis of a faceplate is made fine to obtain the fine focus characteristic over the whole of the faceplate.

公开(公告)号：JPH02239544A

公开(公告)日：1990-09-21

申请号：JP6129489

申请日：1989-03-14

Applicant: TOSHIBA CORP

Inventor： OHAMA SHINJI ,  TOKITA KIYOSHI ,  INOUE MASACHIKA

IPC: H01J29/51

Abstract: PURPOSE:To have simultaneous correction of distortion of a beam spot and misconvergent by adjusting the locations of four magnetic field control elements and also the angle of control element spread with respect to the axis of an electron gun. CONSTITUTION:Each of four magnetic field control elements 22a-22d is made in a bend in close contact with the inner side of a convergence cup 4, and its location is such that one side edge is positioned at the angle position of 30-55 deg. theta1 round the axis of an electron gun with respect to the vertical axis Y-Y, that a spread angle of 20-40 deg. theta2 is provided with respect to the axis of electron gun with this side edge used as the reference, and that the orientation direction of three electron beams 8B, 8G, 8R and the direction perpendicular thereto are not intersected. Synthesization of the rear leakage vertical deflection mag. field with another mag. field induced by the mag. field control elements 22a-22d produces a synthetic mag. field 28 in a distribution in the shape of distorted pin cushion in the electron beam passing region, that enables simultaneous correction of beam spot distortion of the side beam and misconvergence of a plurality of beams.

公开(公告)号：JPH02100235A

公开(公告)日：1990-04-12

申请号：JP25193188

申请日：1988-10-07

Applicant: TOSHIBA CORP

Inventor： KIDA KINJI ,  TOKITA KIYOSHI

IPC: H01J9/14

Abstract: PURPOSE:To prevent color purity deterioration such as color shift and color shading by forming an electron absorbing layer precisely and easily in a desired position of a shadow mask within a color picture tube. CONSTITUTION:The formation of electron absorbing layers 33a, 33b on a shadow mask 31 of a color picture tube comprises a step of coating the shadow mask 31 with a sensitizing agent, a step of exposing the sensitizing film in an unnecessary part of the electron absorbing layers 33a, 33b to light to harden said film, and a step of developing and removing the sensitizing film in the non-sensitized part. Further, it comprises a step of coating the electron absorbing layer 33a, 33b, a step of removing the hardened sensitizing film and the electron absorbing layer 33a, 33b present thereon, and a step of subjecting the shadow mask 31 to a thermal treatment. According to such manufacturing method of the color picture image, the electron absorbing layer can be precisely and easily formed in a desired position of the shadow mask. Hence, the displacement of electron beams by dreaming can be effectively corrected.

公开(公告)号：JPS63248041A

公开(公告)日：1988-10-14

申请号：JP7963887

申请日：1987-04-02

Applicant: TOSHIBA CORP

Inventor： TOKITA KIYOSHI ,  KIDA KINJI ,  KOBAYASHI KAZUFUMI

IPC: H01J29/02 ,  H01J29/07

Abstract: PURPOSE:To suppress the movement of an electron beam caused by the doming by connecting a resistor between a shadow mask and a high-voltage supplying body. CONSTITUTION:A resistor 17 is electrically connected between a shadow mask 7 and a high-voltage supplying body 14. According to such a color picture tube, even if a doming phenomenon is generated by the shadow mask 7, the decelerating electric field strongly deflecting in the direction apart from the tube axis is generated near the shadow mask 7 by the voltage drop across the resistor 17. Therefore, the landing position of an electron beam to be moved in the tube axis direction from the preset landing position by the doming phenomenon is offset to be returned to the original landing position again. Accordingly, the displacement of an electron beam caused by the doming of the shadow mask can be reduced.

公开(公告)号：JPS63239752A

公开(公告)日：1988-10-05

申请号：JP9864487

申请日：1987-04-23

Applicant: TOSHIBA CORP

Inventor： SONE TOSHIHISA ,  URATA HIROSHI ,  NAKAMURA MICHIO ,  TAKAHASHI TORU ,  YAMAZAKI HIDETOSHI ,  TOKITA KIYOSHI

IPC: H01J29/02 ,  H01J29/07 ,  H01J31/20

Abstract: PURPOSE:To make a purity drift not produced for hours even in case of using a shadow mask small in a coefficient of thermal expansion and an iron mask frame by using a specific support member. CONSTITUTION:A support member 30, having a top part, is formed into V-shaped or U-shaped form in a section in the direction of a tube shaft 17, and it consists of a first member 32 extending toward a stand pin 22 from the top part with a certain angle to the tube shaft 17 and a second member 33 extending toward a shadow mask 18 from the top part with a certain angle to the tube shaft 17. Accordingly, even if a mask frame 19 is spread in the peripheral direction by thermal expansion, it is in no case shifted toward a phosphor screen. Otherwise, the travel is possible to be set to the desired small value. In this manner, the mask frame 19 is supported at four corners, and in case of a color picture tube where a coefficient of thermal expansion in the shadow mask 18 is small as compared with the mask frame 19, a purity drift for long hours is improvable.