公开(公告)号：JPH10233174A

公开(公告)日：1998-09-02

申请号：JP31671797

申请日：1997-11-18

Applicant: TOSHIBA CORP

Inventor： NAKAGAWA SHINICHIRO ,  OHAMA SHINJI ,  SHIMIZU NORIO

IPC: H01J9/14 ,  H01J29/07 ,  H01J31/20

Abstract: PROBLEM TO BE SOLVED: To provide a color picture tube, having a sufficient curved surface holding strength even if the curved surface of its shadow mask is flattened, and a method for manufacturing the same. SOLUTION: In a color picture tube, a substantially rectangular shadow mask 15 placed inside a substantially rectangular panel 11 comprises a substantially rectangular frame 23 and a substantially rectangular mask main body 22 whose curved surface opposite to a phosphor screen 14 has a number of electron beam holes formed therein and whose periphery is secured to the frame. In this case, the mask main body is curved in the direction of its minor axis and is secured to the frame while internal stresses in the direction for reducing the radius of curvature in the direction of the minor axis are applied thereto.

公开(公告)号：JPH10199417A

公开(公告)日：1998-07-31

申请号：JP647997

申请日：1997-01-17

Applicant: TOSHIBA CORP

Inventor： SHIMIZU NORIO ,  OHAMA SHINJI ,  NAKAGAWA SHINICHIRO ,  INOUE MASACHIKA

IPC: H01J9/227

Abstract: PROBLEM TO BE SOLVED: To provide a fluorescent screen forming method by which constriction and meandering of a stripe-shaped light absorbing layer and a phosphor layer can be reduced, and an aligner therefor. SOLUTION: In this fluorescent screen forming method, a stripe-shaped pattern corresponding to an opening hole row of a shadow mask, is printed on a photosensitive fluorescent screen forming member layer 19 formed on an inside surface of a panel 2 by an aligner having a long light source 21 where plural opening holes are arranged by setting the opening hole row direction of the shadow mask 5 arranged in a row through a bridge as the longitudinal direction, a cover 27 of this long light source and an optical path length difference correcting lens 28. In this case, the long light source and the optical path length difference correcting lens are fixed, and the stripe-shaped pattern corresponding to the opening hole row of the shadow mask is printed on the photosensitive fluorescent screen forming member layer while vibrating the cover in the longitudinal direction of the long light source.

公开(公告)号：JPH1079233A

公开(公告)日：1998-03-24

申请号：JP18627597

申请日：1997-07-11

Applicant: TOSHIBA CORP

Inventor： SHIMIZU NORIO ,  NAKAGAWA SHINICHIRO ,  INOUE MASACHIKA

IPC: H01J29/07 ,  H01J31/20

Abstract: PROBLEM TO BE SOLVED: To effectively restrain a mask body and a mask frame from being deformed, by providing steps on side wall parts of the mask frame, partially projecting the side wall parts, and maximizing the distance between facing side wall parts on the stepped part. SOLUTION: Each one stepped part 31 is formed on long side wall parts 28L positioned on a short axis V of a mask frame 30 of a shadow mask 21 symmetrically with the longitudinal direction, and the distance between facing long side wall parts is so set as to be larger than the distance dv between the facing long side wall parts in the center part in the longitudinal direction and the distance ds between the facing long side wall parts near the short side wall parts 28S. Two wedge-shaped clearances 32 are formed between a mask body 27 and the long side wall parts 28L, the maximum width W on the stepped part 31 is set into the range of 1 to 3mm, the length L1 of the clearance 32 extending along the longitudinal direction of the long side wall part 28L is set in relation to the distance L between the short axis V and the short side wall parts 28S so as to satisfy the expression: L1=(0.7 to 0.9)L. Therefore, undesirable force to be applied to the mask body 27 by the variations in manufacture of the mask frame 30 can be decreased.

公开(公告)号：JPH09245685A

公开(公告)日：1997-09-19

申请号：JP4903096

申请日：1996-03-06

Applicant: TOSHIBA CORP

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

IPC: H01J29/86 ,  H01J29/87

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 1 of a panel 3 constituting a vacuum envelope along with a funnel 4 is substantially rectangular and a fluorescent screen 5 is formed on the inner surface of the effective area 1, the outer surface of the effective area 1 of the panel is almost planar, while the inner surface of the effective area 1 is shaped into a cylindrical curved surface with almost an infinite radius of curvature in the direction of its major axis and with an almost fixed radius of curvature in the direction of its minor axis.

公开(公告)号：JPH08298078A

公开(公告)日：1996-11-12

申请号：JP10530195

申请日：1995-04-28

Applicant: TOSHIBA CORP

Inventor： AKOU NOBUHIKO ,  MURAI TAKASHI ,  OHAMA SHINJI ,  SHIMIZU NORIO ,  NAKAGAWA SHINICHIRO

IPC: H01J29/07

Abstract: PURPOSE: To provide a color picture tube which hardly causes deterioration in color purity by suppressing landing displacement caused by doming of a mas main body. CONSTITUTION: A color picture tube has a shadow mask comprising a practically square mask main body 3 in which a skirt part 39 is formed around a main face part 37 facing a fluorescent material screen through a no-hole part 38 and a practically square mask frame fixed to the skirt part 39. Slit-like through holes 43 which are long in the tube axis direction are formed in the skirt part 39 of the mask main body 30.

公开(公告)号：JP2007188818A

公开(公告)日：2007-07-26

申请号：JP2006007380

申请日：2006-01-16

Applicant: Toshiba Corp ,  株式会社東芝

Inventor： NAKAGAWA SHINICHIRO ,  TAJIMA YOSHIHIRO ,  SHIOZAWA HITOSHI

IPC: H01J9/14

Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method for a shadow mask, which provides a high definition shadow mask by suppressing a problem of having a shadow member hung down and hooked onto a transporting roller, etc., when an outer frame line part on a short side is formed to be pierced through by etching in order to easily cut and separate the shadow mask member from a metal thin plate by picking, etc., when the shadow mask is formed. SOLUTION: An excess thickness part 24 which is thinner than a plate thickness of the metal thin plate is formed by etching on the outer frame part on the short side which is adjacent to an effective part 19 of the metal thin plate in the manufacturing method for the shadow mask. The shadow mask member is cut and separated from the metal thin plate in this excess thickness part 24. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种荫罩的制造方法，其通过抑制将阴影部件挂起并钩在传送辊等上的问题来提供高清晰度的荫罩，当外框 形成通过蚀刻刺穿的短边的线部分，以便在形成荫罩时通过拾取等容易地将阴罩部件与金属薄板切割和分离。 解决方案：通过蚀刻在与金属薄板的有效部分19相邻的短边上的外框部分上形成比金属​​薄板的板厚薄的多余厚度部分24 荫罩的制造方法。 在该多余的厚度部分24中，将荫罩构件与金属薄板切割并分离。（C）2007，JPO＆INPIT

公开(公告)号：JP2002260549A

公开(公告)日：2002-09-13

申请号：JP2001392572

申请日：2001-12-25

Applicant: TOSHIBA CORP

Inventor： NAKAYAMA TAKESHI ,  NAKAGAWA SHINICHIRO ,  MURAI TAKASHI ,  INOUE MASACHIKA

IPC: H01J29/07

Abstract: PROBLEM TO BE SOLVED: To provide a color cathode-ray tube which is capable of suppressing the displacement of a shadow mask caused by thermal expansion, thence improving production stability and picture quality. SOLUTION: In this color cathode-ray tube, a shadow mask 19 comprises an effective area 17 which is nearly rectangular, in addition disposed facing a phosphor screen and formed many through holes 16 for electron beams, and also has skirt portions 18 which are formed in the periphery of the effective area so as to extend in the direction along a tube axis with a nearly rectangular frame-like shape. Here the skirt portion possesses a pair of long sides extending nearly parallel to a major axis X and a pair of short sides extending nearly parallel to a minor axis Y, and each of long sides and short sides is welded on an inner surface of a nearly rectangular mask frame, and also a distance from the extended end of the skirt portion to welding points in each long side is made to be longer than that in each short side.

公开(公告)号：JP2002245948A

公开(公告)日：2002-08-30

申请号：JP2001038023

申请日：2001-02-15

Applicant: TOSHIBA CORP

Inventor： NAKAGAWA SHINICHIRO ,  ITO YOSHIAKI ,  MURAI TAKASHI ,  INOUE MASACHIKA

IPC: H01J29/07 ,  H01J29/86

Abstract: PROBLEM TO BE SOLVED: To provide a color picture tube that shapes an effective surface of a shadow mask for a high curved surface holding strength, and thereby reduces a wall thickness difference between an inner and an outer surface of an effective part of a panel and improves visibility. SOLUTION: The outer surface of the substantially rectangular effective part 1 of the panel has a substantially plane surface or a slight curvature. The effective surface of the shadow mask 9 has distances from the center to a major axis and a minor axis end respectively designated by H and V. The shadow mask is formed to meet: 2

公开(公告)号：JP2002050302A

公开(公告)日：2002-02-15

申请号：JP2001155450

申请日：2001-05-24

Applicant: TOSHIBA CORP

Inventor： MURAI TAKASHI ,  NAKAGAWA SHINICHIRO ,  ITO YOSHIAKI

IPC: H01J29/07

Abstract: PROBLEM TO BE SOLVED: To provide a color cathode ray tube with improved image definition by lowering degradation of color purity due to deformation and displacement of a shadow mask. SOLUTION: A shadow mask 6 comprises a mask main face 13, a skirt part 14, a mask body 15 with long and short axes, and a mask frame 16 located outside the skirt part. The mask frame has a larger coefficient of thermal expansion than the mask body. The skirt part is composed of a first tongue tip part 26a located on the short axis and a second tongue tip part 26b located on the long axis, both of which are fixed to the mask frame. Assuming that the length of the first tongue tip part is Ca, the width Wb, the length of the mask main face to the long axis direction H, and that to the short axis V, the mask body is formed to satisfy the relational expressions: (Ca.Wb)

公开(公告)号：JPH1196932A

公开(公告)日：1999-04-09

申请号：JP25193897

申请日：1997-09-17

Applicant: TOSHIBA CORP

Inventor： NAKAGAWA SHINICHIRO ,  SHIMIZU NORIO

IPC: H01J29/07 ,  H01J31/20

Abstract: PROBLEM TO BE SOLVED: To make up a color picture tube not needing a rigid mask frame and slow to produce purity drift or howling, by enhancing curved-surface holding strength of a mask body of a shadow mask disposed inside a flat panel. SOLUTION: In a color picture tube in which a shadow mask 17 disposed inside a panel 12 having a substantially rectangular effective part 10 made up of a flat surface or a curved surface near a flat surface comprises a substantially rectangular mask body 23 formed into a shape corresponding to an inner surface shape of the effective part and a mask frame 24 fixed to the peripheral part thereof, skirt parts 26 constituted of a plurality of tongue pieces are provided on shorter sides of the mask body and the mask frame is fixed to the skirt parts.