公开(公告)号：JP2000149830A

公开(公告)日：2000-05-30

申请号：JP24657399

申请日：1999-08-31

Applicant: TOSHIBA CORP

Inventor： YOKOTA MASAHIRO ,  IBUKI HIROAKI

IPC: H01J29/07 ,  H01J29/86

Abstract: PROBLEM TO BE SOLVED: To suppress deterioration of visibility for flatness of a panel glass, by securing strength of a vacuum enclosure by forming the inner surface of a panel comprising a flat outer surface and an inner surface having a center part protruded toward the outer surface into a curved surface satisfying a relation with the shape of a phosphor screen. SOLUTION: In this cathode ray tube, an almost rectangular phosphor screen 14 having a horizontal direction M, a vertical direction N and an aspect ratio of M:N is formed on the inner surface of a panel 12, and when amounts of drop from the center of the inner surface at those locations separated by a distance (r) from the center of the inner surface of the panel 12 on the horizontal axis, the vertical axis and the diagonal axis of the phosphor screen 14 are set for ΔH(r), ΔV(r), ΔD(r) respectively, the inner surface of the panel 12 is formed into a curved surface satisfying the formula I and the formula II. When the amount of sinking on the diagonal axis of the phosphor screen 14 of the panel 12 is the maximum amount of sinking ΔD(rMax), it is preferably within a range of 5-20 mm. Thereby, reduction of strength can be avoided by enhancing workability of a shadow mask.

公开(公告)号：JPH11265666A

公开(公告)日：1999-09-28

申请号：JP6573798

申请日：1998-03-16

Applicant: TOSHIBA CORP

Inventor： SONEDA KOICHI ,  SANO YUICHI ,  YOKOTA MASAHIRO

IPC: H01J29/76 ,  H01J29/86

Abstract: PROBLEM TO BE SOLVED: To provide a cathode-ray tube device capable of effectively reducing a deflecting power for a cathode-ray tube having an envelop having a pyramidal yoke part. SOLUTION: This device has a yoke part 14 formed between a screen and a neck part to mount a deflection yoke 20 mounted on the outside. When the yoke part 14 has a noncircular form based on a rectangle in the section crossing a tube axis Z, the section vertical to the tube axis of the core part 24 of the deflection yoke is formed so that (M+N)/(2(M +N )

公开(公告)号：JPH11250821A

公开(公告)日：1999-09-17

申请号：JP4519698

申请日：1998-02-26

Applicant: TOSHIBA CORP

Inventor： YOKOTA MASAHIRO

IPC: H01J29/07

Abstract: PROBLEM TO BE SOLVED: To provide a color cathode-ray tube for displaying an image of good quality by preventing deformation of a shadow mask during operation of the color cathode-ray tube and setting or folding in pressing. SOLUTION: In a color cathode-ray tube comprising a substantially rectangular mask body 32 in which a portion 37 having no hole is disposed at the outer periphery of a substantially rectangular effective surface opposite to a phosphor screen and numerous electron beam passing holes 44 are formed at a substantially rectangular shadow mask and a skirt is bent at the outer peripheral portion by forming a bent portion 38 at the widthwise intermediate portion of the portion 37 having no hole, and a substantially rectangular mask frame fixed to the skirt portion, a band-like recess 43 is formed at the portion 37 having no hole in the mask body 32. In this way, during a long-term operation of the color cathode-ray tube, a stress generated in the mask body 32 by thermal expansion or a stress generated in pressing the mask body 32 can be inhibited by the band-like recess 43, thus preventing influence on the effective surface.

公开(公告)号：JPH10283951A

公开(公告)日：1998-10-23

申请号：JP8246397

申请日：1997-04-01

Applicant: TOSHIBA CORP

Inventor： YOKOTA MASAHIRO

IPC: H01J31/20 ,  H01J29/76 ,  H04N9/28

Abstract: PROBLEM TO BE SOLVED: To construct a color picture tube device such that the correcting sensitivity of a correcting coil device placed on the rear neck side of a deflection yoke can be enhanced. SOLUTION: This device has a correcting coil device 22 mounted on the neck side of a deflection yoke 18 mounted outside a portion near the boundary between the large diameter portion 17 and neck 14 of a funnel 11, for correcting the convergence and purity of plural beams, and the correcting coil device comprises a magnetic substance having a projection and a coil wound around the magnetic substance. In this case, a notched portion for bringing the end of the projection of the magnetic substance of the correcting coil device close to the paths of the plural beams is formed in the separator of the deflection yoke.

公开(公告)号：JPH10154472A

公开(公告)日：1998-06-09

申请号：JP26362497

申请日：1997-09-29

Applicant: TOSHIBA CORP

Inventor： SANO YUICHI ,  YOKOTA MASAHIRO ,  KOJIMA TADAHIRO ,  KANBARA EIJI

IPC: H01J29/86 ,  H01J31/20

Abstract: PROBLEM TO BE SOLVED: To produce a cathode-ray tube apparatus, of which sufficient atmospheric pressure-withstanding strength is retained and deflecting electric power is effectively decreased, even in the case a yoke part of the apparatus is made to be of non-circular shape. SOLUTION: In a cathode-ray tube apparatus, a narrow diameter region 22 from the joining part of a funnel 21 and a neck 23 to the end part of the deflecting coil in the phosphor screen side is set to be a yoke part. At least one cross-section shape vertical to the tubular axis is made to be non-circular, having a maximum outer diameter between the horizontal and vertical axes. The straight line passing the tubular axis at an angle θ with respect to the horizontal axis in the cross-section is formed to have an inner face shape having a part projected toward the tubular axial direction, and the projected part can be defined as a non-monotonous increasing or decreasing function, giving at least one relative maximum value of the distance from a point, where the inner face of the yoke part and the straight line cross to the horizontal and the vertical axes between the horizontal and the vertical axes.

公开(公告)号：JPH0922667A

公开(公告)日：1997-01-21

申请号：JP16938795

申请日：1995-07-05

Applicant: TOSHIBA CORP ,  TOSHIBA ELECTRONIC ENG

Inventor： YOKOTA MASAHIRO ,  KOJIMA TADAHIRO ,  MAKIMOTO SHUJI ,  FUKUDA YUTAKA

IPC: H01J29/76 ,  H04N9/28

Abstract: PROBLEM TO BE SOLVED: To prevent the increase of coil resistance in the case of forming a flexible member with patterns of coil of a convergence correcting device. SOLUTION: A convergence correcting device 10 to be arranged in a neck part of a color picture tube is formed by wrapping a flexible member, which is formed with patterns of two pairs of four-pole magnetic field generating coil 21, 22 and two pairs of six-pole magnetic field generating coil 23, 24, into the cylindrical shape. In each coil pair 21, 22, 23, 24, four layers of the flexible member formed with pattern are laminated, and the patterns corresponding to each magnetic pole is connected to each other through a continuity part provided in each layer, and the number of turn per each layer can be thereby reduced. With this structure, line width of pattern is enlarged so as to reduce the coil resistance in comparison with the case of forming turns at the required number per each layer.

公开(公告)号：JPH0715737A

公开(公告)日：1995-01-17

申请号：JP15492593

申请日：1993-06-25

Applicant: TOSHIBA CORP

Inventor： YOKOTA MASAHIRO

IPC: H01J29/76 ,  H04N9/28

Abstract: PURPOSE:To improve the microconvergence that is symmetrical to a horizontal deflecting axis and reversely symmetrical to a vertical deflecting axis by connecting the 1st and 2nd auxiliary coils in series to a pair of horizontal deflecting coils and a pair of vertical deflecting coils respectively and connecting a 3rd load part to the 2nd auxiliary coil. CONSTITUTION:The impulsive inductive electromotive force is generated in a high frequency at a magnetic coupling part 32 of a conduction loop 30 by the magnetic flux of a 1st auxiliary coil 11. Thus an inductive current of an almost sawtooth shape flows to the loop 30. The load of a load part 33 is proportional to the magnetic permeability of a closed circuit magnetic core 34. However the load of the part 33 varies due to the change of magnetic permeability caused by the magnetic flux generated by auxiliary coil 21 that is wound round the core 34. Therefore the level of the induced current of a sawtooth shape flowing to a short circuit loop is larger at the upper and lower parts of a screen and smaller on a horizontal axis. Thus the misconvergence of a center beam is improved at the periphery of the screen. An auxiliary magnetic field is minimized on the horizontal axis since the load of the conduction loop is maximized. This load is reduced with increase of the vertical deflecting value and a pattern can be corrected.

公开(公告)号：JPH04223031A

公开(公告)日：1992-08-12

申请号：JP40654790

申请日：1990-12-26

Applicant: TOSHIBA CORP

Inventor： YOKOTA MASAHIRO ,  KOGA TAKAFUMI

IPC: H01J29/76

Abstract: PURPOSE:To jointly reduce leakage magnetic fields due to both of the horizontal deflection magnetic field and the vertical deflection magnetic field of the deflection yoke of a cathode-ray tube device. CONSTITUTION:A pair of ferrite cores in the shape of a rectangular parallelepiped 30 are arranged above and below a deflection yoke 26. A horizontal compensating coil 32 for generating a magnetic field reverse to a horizontal leakage magnetic field by energizing current synchronized with a horizontal deflection current and a vertical compensating coil 34 for generating a magnetic field reverse to a vertical leakage magnetic field by energizing a current synchronized with a vertical deflection current are wound around the ferrite core 30 for a common use. At this time, the loop face of the horizontal compensating coil 32 is orthogonal to the loop face of the vertical compensating coil 34.

公开(公告)号：JP2015060739A

公开(公告)日：2015-03-30

申请号：JP2013194104

申请日：2013-09-19

Applicant: 株式会社東芝 ,  Toshiba Corp

Inventor： YOKOTA MASAHIRO ,  ONO OSAMU ,  OTA HIDEO ,  TAKAHASHI TAKESHI

IPC: F21S2/00 ,  G02F1/13357

Abstract: 【課題】輝度ムラを生じることなく光源の集約が可能な面状の照明装置およびこれを備えた液晶表示装置を提供する。【解決手段】実施形態によれば、面状照明装置は、支持面12aを有する面状の筐体12と、支持面上に線状に配列して配置された光源18と、光源を覆う光学部材と、光源および支持面と対向して配置された面状の拡散板14と、を備えている。光学部材は、光源を覆う透明な材料で形成された第1カバー22と、第1カバー上に設けられ乳白材料で形成された第2カバー24と、を有する。【選択図】図2

Abstract translation: 要解决的问题：提供一种在不引起亮度不均匀的情况下固化光源的平面照明装置，并提供包括该照明装置的液晶显示装置。解决方案根据一个实施例，一种平面照明装置包括：平面壳体12 具有支撑表面12a; 光源18设置在支撑表面上，以线性方式布置; 覆盖光源的光学构件; 以及面对光源和支撑表面设置的平面扩散板14。 光学构件包括：第一盖22，其覆盖光源并由透明材料形成; 以及设置在第一盖上并由乳白色材料形成的第二盖24。

公开(公告)号：JP2015035384A

公开(公告)日：2015-02-19

申请号：JP2013166731

申请日：2013-08-09

Applicant: 株式会社東芝 ,  Toshiba Corp

Inventor： YOKOTA MASAHIRO ,  TAKAHASHI TAKESHI ,  ONO OSAMU ,  OTA HIDEO

IPC: F21S2/00 ,  F21V3/00

Abstract: 【課題】主照射方向の反対側にも照射することができる高効率な照明装置を提供する。【解決手段】実施形態によれば、照明装置の照明ユニットは、指向性を有し線状に配置された光源4と、長手方向に引き延ばされた形状を有し、前記光源を覆うカバー5と、を備えている。カバー5は、長手方向に延びる端部に前記光源の指向性方向に対して90度以上異なる反対側方向に光を全反射して照射するプリズム6を有している。【選択図】図1

Abstract translation: 要解决的问题：提供一种能够在与主发射方向相反的方向上发光的高效照明装置。解决方案：根据实施例，照明装置的照明单元包括：具有指向性的光源4和 线性排列 以及形成为沿长度方向延伸并覆盖光源4的形状的盖5.盖5包括设置在沿纵向方向延伸的端部中的棱镜6，用于全反射和向与...相反的方向发射光 光源4的方向性的方向为90度以上。