公开(公告)号：JPS6391931A

公开(公告)日：1988-04-22

申请号：JP23704686

申请日：1986-10-07

Applicant: TOSHIBA CORP

Inventor： INOUE MASACHIKA

IPC: H01J9/227

Abstract: PURPOSE:To smooth constriction of a stripe and to upgrade screen quality by performing the reciprocating motion of a panel in the longitudinal direction of the linear stripe while continuously performing light irradiation of an arbitrary inner surface of the panel. CONSTITUTION:A panel mounting plate 32 is formed on an upper end surface 31 of a frame 30, and a panel 5 equipped with a shadow mask 8 having many slot-shaped via apertures is positioned on the plate 32. Inside the frame 30, a long light source 3, a lens 6 for landing correction, a filter 7 for correcting a light distribution, and a shutter 20 are disposed from the downside toward the panel 5. In this composition, the long light source 3 is formed into an oblong linear shape and the longitudinal direction of this source is made identical with that of the slot-shaped via holes of the mask 8, that is, that of the linear stripe to be formed. The shutter 20 is equipped with an opening part, and while the inner surface of the panel 5 is irradiated through a rectangular region 21 of the shutter 20, reciprocating motion of the panel is performed in the longitudinal direction of the long light source 3. Furthermore, the mounting plate 32 is also moved in the longitudinal direction of the long light source 3 by the use of a driving part 34, so that the stripe without constriction can be obtained.

公开(公告)号：JPS62123641A

公开(公告)日：1987-06-04

申请号：JP26237585

申请日：1985-11-25

Applicant: TOSHIBA CORP

Inventor： INOUE MASACHIKA ,  YAMAZAKI HIDETOSHI

IPC: H01J29/07

Abstract: PURPOSE:To check the deterioration of color purity due to partial thermal deformation so effectively, by setting the center of a shadow mask down to a point of origin, and constituting it so as to satisfy the specified condition with a specific plane and an effective zone. CONSTITUTION:Setting the center of a shadow mask down to a point of origin, when a major axis is set to an X-axis, a minor axis to a Y-axis and a center axis to a Z-axis, respectively, a zone in and around an intersection line between a plane (X-Z plane) inclusive of the X-axis and the Z-axis in an effective zone and the effective zone forms a radius of curvature of the intersection line to be formed with an optional plane (Y-Z parallel plane) in parallel with the Y-axis and the Z-axis into such a form taking the minimum between the mask center and the X-axial effective zone. In addition, a curve of the intersection line to be formed with the X-Z plane and the mask effective zone should be formed into, for example, an oval or a noncircular curve which partially intensifies the degree of curvature. With this constitution, a variation in color purity caused by partial thermal deformation by an emissive collision of electron beams of the shadow mask can be checked.

公开(公告)号：JPS61163539A

公开(公告)日：1986-07-24

申请号：JP204085

申请日：1985-01-11

Applicant: TOSHIBA CORP

Inventor： INOUE MASACHIKA ,  YAMAZAKI HIDETOSHI

IPC: H01J29/07

Abstract: PURPOSE:To control deterioration in color purity depending on a partial thermal deformation, by changing the curved surface of the panel by means of forming the section along the X axis of the effective curved surface of the panel in a portion of an elliptical curve taking the section along the X axis as the major axis and the Y axis as the apex, where the center axis along the long side and the center axis along the short side are taken as X axis and Y axis respectively. CONSTITUTION:Inside the rectangular panel 9 of a color picture tube is formed a phosphor 17, the rectangular shadow mask 14 is arranged close and opposite to the panel 9, and in the electron beam projecting area 18 of the mask 14 is formed an opening 15. where the long center axis and the short center axis of the mask 14 are taken as X axis and Y axis respectively, the section along the X axis around the M point in the beam projecting area 18 of the mask 14 is formed in a portion of an elliptical curve, taking a line along the X axis as the major axis and Y axis as the apex. By making the eccentricity of the elliptical curve more than 0.5 and less than 1.0, and making the section along the Y axis in one or more different curvature radiuses, the deterioration in color purity depending on the partial thermal deformation is controlled.

公开(公告)号：JP2002260559A

公开(公告)日：2002-09-13

申请号：JP2001054701

申请日：2001-02-28

Applicant: TOSHIBA CORP

Inventor： SHIMIZU NORIO ,  INOUE MASACHIKA

IPC: H01J29/07 ,  H01J29/86

Abstract: PROBLEM TO BE SOLVED: To provide a color picture tube without having such problems as color purity deterioration due to beam landing deviations caused by a deformation of a mask structure of a shadow mask and implosion proof characteristics deterioration of a face panel, when curvatures of the mask structure and an inner surface of the face panel are reduced to follow flattening an outer surface of the face panel of the color picture tube to the utmost limit in order to improve its picture recognition. SOLUTION: The center of the inner surface of a face panel 13 is chosen as a first reference point. The respective sinking amounts at the ends of the diagonal axis, horizontal axis and the vertical axis with respect to the first reference point are called ZPD, ZPH and ZPV, respectively. Similarly, the corresponding sinking amounts of the same axes with respect to the center of a shadow mask 18 are called ZMD, ZMH and ZMV, respectively. Then, the face panel 13 and the mask body 21 are formed so as to satisfy the relations ZPD> ZPV>ZPH, ZMD>ZMH>ZMV and ZPD ZMV.

公开(公告)号：JP2002042691A

公开(公告)日：2002-02-08

申请号：JP2000220990

申请日：2000-07-21

Applicant: TOSHIBA CORP

Inventor： AKOU NOBUHIKO ,  TAKAHASHI TORU ,  INOUE MASACHIKA

IPC: H01J29/86 ,  H01J29/76

Abstract: PROBLEM TO BE SOLVED: To provide a deflection yoke capable of reducing deflection power and manufacturing costs and lowering the heat and a cathode-ray tube device provided with the yoke. SOLUTION: A vacuum envelope of a cathode-ray tube has an approximately truncated pyramid shape yoke fitting part. The deflection yoke 14 fitted to the yoke fitting part is mounted symmetrically to a center axis to form an approximately truncated pyramid shaped pair of straddling horizontal deflecting coils 30a, 30b. A circular truncated cone shaped magnetic core 34 is mounted coaxially on the outer circumference of the horizontal deflection coil for having a pair of vertical deflecting coils wound toroidally on the magnetic core. In the direction of vertical axis orthogonal to the center axis, the relation of a gap (vf) between an end on the large diameter side of the magnetic ore and the horizontal deflection coil with a gap (vr) between an end on the small diameter side of the magnetic core and the horizontal deflection coil is set to be vf>=vr.

公开(公告)号：JP2001338596A

公开(公告)日：2001-12-07

申请号：JP2001086234

申请日：2001-03-23

Applicant: TOSHIBA CORP

Inventor： OGURA MASAAKI ,  SHIMIZU NORIO ,  INOUE MASACHIKA

IPC: H01J29/86

Abstract: PROBLEM TO BE SOLVED: To provide a color cathode-ray tube that has good quality of external light reflection on the panel inside and reduces deterioration, etc., in color purity by shear in beam landing, and a color picture tube having the tube. SOLUTION: Thickness of an effective part 16 of a face panel is formed thicker at the peripheral part than that at the center. On the inner face of the effective part, the radius of curvature along the minor axis direction on the major axis X has, when the distance from the center of the face panel to the end of the major axis is taken as L, minimum value at a position apart toward the end of the major axis of more than L/2 from the center of the face panel, and then the face panel satisfy the following relations: TD

公开(公告)号：JP2000331621A

公开(公告)日：2000-11-30

申请号：JP13696899

申请日：1999-05-18

Applicant: TOSHIBA CORP

Inventor： AKOU NOBUHIKO ,  INOUE MASACHIKA

IPC: H01J29/07

Abstract: PROBLEM TO BE SOLVED: To provide a color picture tube without a degraded strength or a degraded appearance of phosphor screen due to the arrangement of apertures for a flattened shadow mask. SOLUTION: An aperture row 55 comprises multiple apertures 53 in the minor axis direction on a shadow mask 26 for this color picture tube. The spacing of neighboring aperture rows on the major axis Ah is formed according to Ah=a+bx2, and the spacing of neighboring aperture rows on the long edge A1 is formed according to A=a'+b'x2-cx6, and the aperture rows 55 excepting one on a minor axis are curved approximately uniformly protruding to the center of the shadow mask 26.

公开(公告)号：JP2000149811A

公开(公告)日：2000-05-30

申请号：JP31763898

申请日：1998-11-09

Applicant: TOSHIBA CORP

Inventor： AKOU NOBUHIKO ,  INOUE MASACHIKA

IPC: H01J9/14 ,  H01J29/07

Abstract: 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.

公开(公告)号：JP2000133160A

公开(公告)日：2000-05-12

申请号：JP30203198

申请日：1998-10-23

Applicant: TOSHIBA CORP

Inventor： MURAI TAKASHI ,  TANI MUNECHIKA ,  INOUE MASACHIKA

IPC: H01J29/07

Abstract: 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.

公开(公告)号：JPH11329303A

公开(公告)日：1999-11-30

申请号：JP4285999

申请日：1999-02-22

Applicant: TOSHIBA CORP

Inventor： MASHITA TAKUYA ,  SHIMIZU NORIO ,  NAKAGAWA SHINICHIRO ,  INOUE MASACHIKA

IPC: H01J29/02 ,  H01J29/87

Abstract: 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.