公开(公告)号：JP2002216667A

公开(公告)日：2002-08-02

申请号：JP2001010319

申请日：2001-01-18

Applicant: TOSHIBA CORP

Inventor： AKOU NOBUHIKO ,  TAKAHASHI TORU ,  INOUE MASACHIKA

IPC: H01J29/76

Abstract: PROBLEM TO BE SOLVED: To provide a deflection yoke and a cathode ray tube device that solve the problems such as a cathode ray tube attached on a pyramid trapezoidal deflection yoke for the generating of heat of deflection yoke in accordance with a large increase of deflecting electricity corresponding to a large screen, minute details but radiation, cost, and difficulty in mass production are the difficulty as shackles. SOLUTION: A deflection yoke attachment 20 of a cathode ray tube forms pyramid trapezoid. Inside of a coil separator 24 formed pyramid trapezoid to fit to the deflection yoke attachment 20, a pair of pyramid trapezoidal horizontal deflection coil 23 is arranged and outside of the coil separator 24 a conical core 33 coiled toroidal vertical deflection coil 35 is arranged.

公开(公告)号：JP2000306528A

公开(公告)日：2000-11-02

申请号：JP2000014865

申请日：2000-01-24

Applicant: TOSHIBA CORP

Inventor： MASHITA TAKUYA ,  SHIMIZU NORIO ,  INOUE MASACHIKA

IPC: H01J29/86 ,  H01J29/87

Abstract: PROBLEM TO BE SOLVED: To provide a cathode-ray tube improving its explosion-proof characteristic and reducing its beam landing variation. SOLUTION: A panel 2 of a vacuum envelope has an almost rectangle-like effective part 8 having an almost flat outer surface and having a phosphor screen 1 being formed on its inner surface, and has a skirt part 9 being provided along the peripheral part of the effective part 8 and extending almost perpendicularly to the effective part 8; and a funnel 3 is joined to the skirt part 9. To the outer surface of the skirt part 9, a reinforcing band for fastening the skirt part 9 is attached. When a is the distance, along the tube axis direction, from the panel-funnel junction to the reinforcing-band edge on the outer surface side of the effective part 8 and when h is the distance, along the tube axis direction, from the junction to the center position of the outer surface of the effective part 8, the reinforcing band is provided so as to satisfy a >=0.9 h.

公开(公告)号：JP2000123752A

公开(公告)日：2000-04-28

申请号：JP29800098

申请日：1998-10-20

Applicant: TOSHIBA CORP

Inventor： TANI MUNECHIKA ,  MURAI TAKASHI ,  INOUE MASACHIKA

IPC: H01J29/07 ,  H01J29/02

Abstract: PROBLEM TO BE SOLVED: To prevent the drift in beam landing caused by a shock applied during a manufacturing process or transportation of a product by making the side wall sections lower at the short axis ends of a mask frame than at the long axis ends and diagonal axis ends. SOLUTION: The phosphor screen side end edges of the side wall sections 36 of a mask frame 38 are formed into a circular arc shape corresponding to the shape of the long axis end periphery (short side periphery) of the principal plane of a mask main body at short sides 40, and the height near the center sections of the short side wall sections 36 is made larger than the near diagonal axes. Long sides 41 are cut by 80% or above of the length on the phosphor screen side of the side wall sections 36 except for near the diagonal axes, they are formed into a shape different from the shape of the short axis end periphery (long side periphery) of the principal plane of the mask main body, and the height near the center sections of the long side wall sections 36 is made lower than the height near the diagonal axes. The height of the side wall sections 36 near the short axis ends is made lower than the height of the side wall sections 36 near the long axis ends and near the diagonal axes.

公开(公告)号：JP2000030621A

公开(公告)日：2000-01-28

申请号：JP19390798

申请日：1998-07-09

Applicant: TOSHIBA CORP

Inventor： NAKAZAWA ATSUSHI ,  TANI MUNECHIKA ,  MURAI TAKASHI ,  INOUE MASACHIKA

IPC: H01J29/02

Abstract: PROBLEM TO BE SOLVED: To structure a color picture tube reducing possibility of causing deterioration in color purity and a drop-out by enhancing impact resistance of a shadow mask supporting means. SOLUTION: In this color picture tube, a shadow mask is supported by a stud pin 47 provided on a panel 32 and an elastic supporting body 48 attached to a mask frame locked by the stud pin, and the stud pin is so formed that the angle of inclination of the outside surface of a conical locking part 51 with a sheared head to a center axis of the stud pin protruding toward the mask frame from a planted part planted on the panel with the locked position of the elastic supporting body intervened in the middle, gradually increases from the tip part toward the planted part.

公开(公告)号：JPH11238474A

公开(公告)日：1999-08-31

申请号：JP4058298

申请日：1998-02-23

Applicant: TOSHIBA CORP

Inventor： TANI MUNECHIKA ,  MURAI TAKASHI ,  FUKUDA KUMIO ,  INOUE MASACHIKA ,  NAKAZAWA ATSUSHI

IPC: H01J29/07

Abstract: PROBLEM TO BE SOLVED: To reduce the unnecessary emission from a phosphor and minimize the degradation of color purity by setting the shadow mask central directional decentering quantity of a small hole to a large hole so as to be larger in a major axial position than in a minor axial position separated from the center of the shadow mask by a specified distance. SOLUTION: An electron beam passing hole 12 on the effective surface of a shadow mask is formed so as to have a form in which a large hole 19 on the phosphor screen- side surface communicates with a small hole 20 on the electron gun-side surface, and in the peripheral part of the effective surface of the shadow mask, the small hole 20 is decentered in the center direction of the shadow mask to the large hole 19. For the shadow mask central directional decentering quantities ΔRH, ΔRV of the small hole 20 to the large hole 19 separated from the center of the shadow mask by the same distance in the major axial direction and the minor axial direction, the decentering quantity ΔRH is larger than the decentering quantity ΔRV. The decentering quantity ΔRV is suppressed to the necessary minimum with which a side beam never collides to the inner wall of the electron beam passing hole 12 to optimize the decentering quantity ΔRH. Thus, the degradation of mechanical strength can be suppressed.

公开(公告)号：JPH10208656A

公开(公告)日：1998-08-07

申请号：JP832097

申请日：1997-01-21

Applicant: TOSHIBA CORP

Inventor： SAOTOME ICHIRO ,  MURAI TAKASHI ,  TANI MUNECHIKA ,  INOUE MASACHIKA

IPC: H01J29/07 ,  H01J31/20

Abstract: PROBLEM TO BE SOLVED: To compose a color cathode-ray tube which can effectively suppress the doming of a shadow mask by setting the form and the forming position of band form projecting regions in an optimum condition. SOLUTION: This color cathode-ray tube having a shadow mask of a rectangular form practically has a single or plural band form projecting regions 40a to 40c projecting in the direction of a phosphor screen along the longer shaft of the shadow mask 30, on an effective surface 31 consisting of a curved surface opposing to the phosphor screen of the shadow mask 30. And when the length of 1/2 of the shorter shaft of the shadow mask 30 is made Y, the distance of a border nearest to the longer shaft, of the borders between the band form projecting regions 40a to 40c, and the neighboring areas, from the longer shaft is made y1, and the distance of the furthest border from the longer shaft is made y2, those band form projecting regions 40a to 40c are provided in the relations: 1/9Y

公开(公告)号：JPH09245684A

公开(公告)日：1997-09-19

申请号：JP4902996

申请日：1996-03-06

Applicant: TOSHIBA CORP

Inventor： OHAMA SHINJI ,  SHIMIZU NORIO ,  INOUE MASACHIKA ,  FUKUDA KUMIO

IPC: H01J29/86

Abstract: PROBLEM TO BE SOLVED: To construct a color picture tube whose visibility can be enhanced by enhancing the flatness of the effective-area outer surface of its panel. SOLUTION: In a color picture tube in which the effective area 10 of a panel 12 constituting a vacuum envelope along with a funnel is substantially rectangular and a fluorescent screen is formed on the inner surface of the effective area, the outer surface of the effective area of the panel is shaped into a cylindrical curved surface with almost an infinite radius of curvature in the direction of its major axis as shown by the straight line 21, and with an almost fixed radius of curvature in the direction of its minor axis as shown by the curves 22a, 22b.

公开(公告)号：JPH07254379A

公开(公告)日：1995-10-03

申请号：JP4292994

申请日：1994-03-15

Applicant: TOSHIBA CORP

Inventor： SHIMIZU NORIO ,  INOUE MASACHIKA

IPC: H01J29/76 ,  H04N9/28

Abstract: PURPOSE:To prevent generation of a green droop and avoid collision of a side beam against the inner wall of a funnel by providing a pair of upper and lower first and second sub-coils in the rear portion of a deflector. CONSTITUTION:A pair of upper and lower first sub-coils 34 are disposed in the rear portion of a deflector 29, i.e., on a side of an electron gun 27, and a couple of upper and lower second sub-coils 35 are provided on a side of the gun 27 with respect to the coils 34. Consequently, a magnetic field having distribution of a barrel type, a pin cushion type, and a barrel type in order toward the direction of a phosphor screen 22 from the gun 27 is formed, where the barrel type is a main deflection magnetic field for generating a vertical deflection coil 32 of the deflector 29. As a result, a clearance between a side beam to be emitted from the gun 27 and the inner wall of a funnel 21 becomes large, thus preventing collision of the side beam against the inner wall of the funnel 21, and to correct a green droop which may be generated when the sub-coils are disposed in the rear portion of the deflector 29 in order to correct a coma error.

公开(公告)号：JPH07111137A

公开(公告)日：1995-04-25

申请号：JP25460993

申请日：1993-10-13

Applicant: TOSHIBA CORP

Inventor： NAKANE KAZUNORI ,  INOUE MASACHIKA ,  SHIMIZU NORIO

IPC: H01J29/07 ,  H01J29/02

Abstract: PURPOSE:To improve the shock resistance and vibration resistance characteristics of a shadow mask to prevent color diflection without increasing the weight of a mask frame by shortening a side wall length in the short side of the mask frame than an inner side overhanging length. CONSTITUTION:The inner side overhanging part 32 of a mask frame 33 is formed into a curved surface state wherein overhanging quantity in the middle part of respective sides is increased and overhanging quantity is reduced as approaching four corner parts. When the side wall length of respective sides and the inner side overhanging part length are represented as (a) and (b) respectively, the mask frame 33 is formed to have a relationship wherein (a)>(b) in a long side 38 and (a)

公开(公告)号：JPH06302284A

公开(公告)日：1994-10-28

申请号：JP33545993

申请日：1993-12-28

Applicant: TOSHIBA CORP

Inventor： INOUE MASACHIKA ,  FUJIWARA TAKESHI

IPC: H01J29/07 ,  H01J29/86 ,  H01J31/20

Abstract: PURPOSE:To reduce a landing slippage owing to a local thermal expansion of a shadow mask, and to reduce a deformation by an impact and a resonance of a vibration, by specifying the mutual relation of the radiuses of curvature in the short axial direction and the long axial direction of the shadow mask in a panel effective part. CONSTITUTION:The outer surface of the effective part 20 of a panel 22 is made in almost a spherical surface, the effective diameter on the diagonal axis of the outer surface is made s, and the collapse amount of the effective part outer surface to the center of the effective part of the panel at the effective part end on the diagonal axis is made d. The collapse amount at the effective part end on the axis is made h, and the collapse amount at the effective part end of the short axis is made v. In this case, the relation is set to satisfy d/s