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51. 发明专利

JP2000149811A MANUFACTURE OF SHADOW MASK FOR COLOR PICTURE TUBE 失效
公开(公告)号：JP2000149811A
公开(公告)日：2000-05-30
申请号：JP31763898
申请日：1998-11-09
申请人： TOSHIBA CORP
发明人： AKOU NOBUHIKO , INOUE MASACHIKA
IPC分类号： H01J9/14 , H01J29/07
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method of a easily assembled shadow mask for improving curved face holding strength for an effective surface of a mask main body and preventing deterioration due to the increase in the curvature holding strength in assembling workability for the shadow mask. SOLUTION: In manufacturing method of a shadow mask for a color picture tube, a stepped part 38 having a gap in the central axis direction of a mask main body 34 is formed in the vicinity of the boundary between a skirt part 33 and a non-hole part 32 in molding of the mask main body 34, while in a part other than the stepped part, a slit 40 longitudinal in the direction parallel to the central axis of the mask main body 34 is formed on the opened edge 39 side of the skit part 33.

52. 发明专利

JP2000133160A COLOR PICTURE TUBE 失效
公开(公告)号：JP2000133160A
公开(公告)日：2000-05-12
申请号：JP30203198
申请日：1998-10-23
申请人： TOSHIBA CORP
发明人： MURAI TAKASHI , TANI MUNECHIKA , INOUE MASACHIKA
IPC分类号： H01J29/07
摘要： PROBLEM TO BE SOLVED: To provide a color picture tube resisting deterioration of color purity by enhancing the strength for retaining the curved surface of a mask body to reduce the shift of beam landing. SOLUTION: This color picture tube, has a generally rectangular shadow mask 30 that comprises an effective surface 32 made of a curved surface opposite to a phosphor screen, a mask body 35 consisting of an unperforated part 33 surrounding the effective screen and a skirt part 34 formed by curving the outer periphery thereof, and a mask frame 36 mounted on the skirt part. A structure in which the radius of curvature of the effective surface of the mask body, in the direction of at least either a minor or major axis, is at its minimum in the vicinity of a position halfway between the center and the circumference of the effective surface is adopted.

53. 发明专利

JPH11329303A COLOR IMAGE RECEIVING TUBE 失效
公开(公告)号：JPH11329303A
公开(公告)日：1999-11-30
申请号：JP4285999
申请日：1999-02-22
申请人： TOSHIBA CORP
发明人： MASHITA TAKUYA , SHIMIZU NORIO , NAKAGAWA SHINICHIRO , INOUE MASACHIKA
IPC分类号： H01J29/02 , H01J29/87
摘要： PROBLEM TO BE SOLVED: To construct a color image receiving tube which decreases dispersion of a beam landing caused by dispersion of a compression stress of a reinforcing band and turbulence of an image caused by a resonance of a shadow mask. SOLUTION: In a color image receiving tube which is tightly fastened at the outer periphery of a skirt part of a substantially rectangular panel 22 by a reinforcing band 25, the band is arranged so as to establish a relation of b>=2.0a, where (a) is a distance from a point 39 at which a plane including a seal edge crosses a tube axis to a point 41 at which an axis 40 of a stud pin 31 crosses the tube axis, and (b) is a distance from a point at which the plane including the seal edge crosses the tube axis to a point 43 at which a vertical line crosses extending downward to the tube axis from an opposite edge of a phosphor screen 27 of the band 25.

54. 发明专利

JPH11238475A COLOR IMAGE RECEIVING TUBE 失效
公开(公告)号：JPH11238475A
公开(公告)日：1999-08-31
申请号：JP4058398
申请日：1998-02-23
申请人： TOSHIBA CORP
发明人： NAKAGAWA SHINICHIRO , SHIMIZU NORIO , MASHITA TAKUYA , INOUE MASACHIKA
IPC分类号： H01J29/32 , H01J29/86
摘要： PROBLEM TO BE SOLVED: To provide a color image receiving tube of such a structure that the external surface of the main surface part of a substantially rectangular panel is approximately a plane and the internal surface has a curvature in the short axis direction at least near the shorter edge member, wherein the flatness of an image screen drawn on a phosphor screen furnished on the internal surface of the main surface part is enhanced. SOLUTION: A color image receiving tube comprises a panel 12 structured so that the external surface of the main surface part 10 of substantially rectangular shape is approximately a plane or has a minor curvature and the internal surface has a curvature in the short axis direction near the shorter edge member, and a phosphor screen 14 which is formed on the inner surface of the main surface part and has an effective part of a substantially rectangular shape, wherein the shorter edge member of the periphery of the screen effective part is shaped convex toward the center of the effective part. Thereby the flatness of an image displayed in the effective part of the phosphor screen can be enhanced.

55. 发明专利

JPH11191380A COLOR PICTURE TUBE 失效
公开(公告)号：JPH11191380A
公开(公告)日：1999-07-13
申请号：JP36076097
申请日：1997-12-26
申请人： TOSHIBA CORP
发明人： SAOTOME ICHIRO , MURAI TAKASHI , INOUE MASACHIKA
IPC分类号： H01J29/02 , H01J31/20
摘要： PROBLEM TO BE SOLVED: To provide an elastic supporting body to compensate landing displacement due to thermal expansion of a shadow mask without deteriorating the detachability or the landing displacement suppression characteristic of the shadow mask due to an external shock for a color picture tube of which shadow mask is supported by a nearly wedge-shaped or nearly V-shaped elastic supporting body. SOLUTION: In a color picture tube of which elastic supporting body 44 to support a shadow mask 35 is composed, in a generally V-shaped form, of a fixed part 46 to be fixed on a mask frame 42, a locked part 48 to be locked by a stud pin 43, and a tilted part comprised of a first tilted part placed at the fixed part slantwise and a second tilted part placed at the locked part slantwise, the elastic supporting body 44 is formed into a structure having a protruding part 52 formed only on the secondary tilted part.

56. 发明专利

JPH11176344A COLOR PICTURE TUBE 失效
公开(公告)号：JPH11176344A
公开(公告)日：1999-07-02
申请号：JP33976297
申请日：1997-12-10
申请人： TOSHIBA CORP
发明人： NAKAGAWA SHINICHIRO , SHIMIZU NORIO , INOUE MASACHIKA
IPC分类号： H01J29/07
摘要： PROBLEM TO BE SOLVED: To suppress landing failure by partial doming of a shadow mask and to prevent deterioration of color purity, by keeping a fixed distance between adjacent electron passing holes in a long axis direction of an effective surface of a shadow mask and by increasing it from an intermediate point to the long axis direction in accordance with an increase of a coordinate position. SOLUTION: An increase of a distance between electron passing holes in a section from an intermediate point to a long axis end is preferably set in accordance with an increase function such as the secondary function. A section with a fixed distance is 60-80% of the section from a center to the long axis end. An increase rate of the distance between the passing holes near the intermediate point is not more than 20% of a difference between a distance between the passing holes at the center of an effective surface 21 and the distance at the long axis end. If a distance between electron passing holes is regulated, curved surface holding strength in a peripheral part of the effective surface 21 can be enhanced without harming landing of an electron beam 17, even if a curvature in the peripheral part of the effective surface where partial doming is likely to occur is made big.

57. 发明专利

JPH09180647A COLOR PICTURE TUBE 失效
公开(公告)号：JPH09180647A
公开(公告)日：1997-07-11
申请号：JP33447995
申请日：1995-12-22
申请人： TOSHIBA CORP
发明人： TSUCHIDA SHIGERU , INOUE MASACHIKA
IPC分类号： H01J29/07
摘要： PROBLEM TO BE SOLVED: To improve color purity by inserting bimetal elements between the skirt section of a mask main body and a mask frame, and arranging the bimetal elements near four corners of the shadow mask. SOLUTION: This color picture tube has an envelope constituted of a substantially rectangular panel 3 provided with a skirt section 2 at the peripheral section of an effective section 1 and a funnel 4 connected to the skirt section of the panel 3, and a fluorescent screen 5 and a shadow mask 6 are formed on the inner face of the effective section 1 of the panel 3. The shadow mask 6 has many electron beam passing holes on an effective face 30 facing the fluorescent screen 5. The shadow mask 6 is constituted of a rectangular mask main body 12 provided with skirt sections 31 at the peripheral section of the effective face 30 and a rectangular mask frame 13 arranged at the peripheral section of the mask main body 12. Bimetal elements 32 are inserted between the skirt sections 31 near four corners of the mask main body 12 and side wall inner faces near four corner sections of the mask frame 13 facing the skirt sections 31.

58. 发明专利

JPH08195177A DEFLECTING DEVICE FOR COLOR PICTURE TUBE 失效
公开(公告)号：JPH08195177A
公开(公告)日：1996-07-30
申请号：JP540895
申请日：1995-01-18
申请人： TOSHIBA CORP
发明人： SAOTOME ICHIRO , OHAMA SHINJI , INOUE MASACHIKA
IPC分类号： H01J29/76
摘要： PURPOSE: To provide a deflecting device capable of easily distributing the horizontal and vertical deflection magnetic fields as desired. CONSTITUTION: This deflecting device for a color picture tube is provided with the first deflection coil 21 generating the magnetic field deflecting the electron beam emitted from an electron gun in the first axis direction perpendicular to the tube axis, the second deflection coil 23 generating the magnetic field deflecting the electron beam in the second axis direction perpendicular to the tube axis and the first axis, and a hollow trapezoidal core 22 having relatively small inner and outer diameters on one end section side and relatively large inner and outer diameters on the other end section side. The core 22 is formed into a noncircular hollow trapezoidal shape so that the outer diameter on the first axis and the outer diameter on the second axis on one end section side and on the other end section side differ respectively and the outer diameters on the first axis and on the second axis on one end section side and the outer diameters on the first axis and on the second axis on the other end section side are set to the inverse relation.

59. 发明专利

JPH0676762A COLOR PICTURE TUBE 失效
公开(公告)号：JPH0676762A
公开(公告)日：1994-03-18
申请号：JP15982993
申请日：1993-06-30
申请人： TOSHIBA CORP
发明人： INOUE MASACHIKA , TAKAHASHI TORU
IPC分类号： H01J29/86
摘要： PURPOSE:To effectively correct degradation in color purity caused by local thermal deformation of a shadow mask. CONSTITUTION:In a color picture tube, which has a panel 12, in which the inner surface of a rectangular effective surface 10 practically comprises curved surfaces, and for which a phosphor screen opposing to a shadow mask is formed on the inner surface of the panel 12, the difference in the thickness between a panel in the direction of short axis and a panel in the direction of diagonal axis, that are at a same distance from the center of the effective surface of the panel, is smaller than the difference in the thickness between the panel in the direction of diagonal axis and that in the direction of longitudinal axis, at the same distance, at least in a region of 1/2 no less than the distance from the center of the effective surface to the longitudinal end part.

60. 发明专利

JPH0355741A FLUORESCENT SCREEN FORMING EXPOSURE DEVICE OF COLOR PICTURE TUBE 失效
公开(公告)号：JPH0355741A
公开(公告)日：1991-03-11
申请号：JP19052189
申请日：1989-07-25
申请人： TOSHIBA CORP
发明人： FUJIWARA TAKESHI , TOKITA KIYOSHI , INOUE MASACHIKA
IPC分类号： H01J9/227
摘要： PURPOSE:To remove a nonluminous area formed on a fluorescent screen by moving a panel synchronously with the movement of a douser and in the opposite direction to the moving direction of the douser, and fixing the panel to move a linear light source synchronously with the movement of the douser and in the same direction. CONSTITUTION:When a panel 18 is exposed, the angle theta1 formed by a light 36 landed on a panel 18 inner surface through the vertically most outside slit hole 35 of a shadow mask for determining the vertical size of a fluorescent screen with a light source position P is smaller than the angle theta2 formed by a light 38 landed on the panel inner surface through the most outside slit hole 37 when the panel is not moved with the light source position P. Thus, the dislocation between a deflection center position formed when electron beams are vertically deflected by a deflecting device having a frame aberration correcting device and the light source position at the time of exposure can be corrected. Thus, the error between the landing point of the electron beams reached to the panel inner surface through the slit hole 35 of the mask 19 by deflection and the landing point of the light reached to the panel inner surface through the same slit hole 37 at the time of exposure can be eliminated.

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