公开(公告)号：JPS6417360A

公开(公告)日：1989-01-20

申请号：JP17283887

申请日：1987-07-13

Applicant: TOSHIBA CORP

Inventor： INOUE MASACHIKA ,  TOKITA KIYOSHI ,  SONE TOSHIHISA

IPC: H01J29/86 ,  H01J31/20

Abstract: PURPOSE:To ristrict deterioration of color purity caused by pertial thermal disformation of a shadow mask by making a radius of curvature in Y-axis direction smaller on the periphery than that in the center of a faceplate on the crossing line of the rectangle-shaped effective curved surface of a panel with Y axis. CONSTITUTION:A color picture tube is provided with a panel 24 having a rectangle-shaped effective curved surface, a fluorescent screen 30 formed on the inner surface of this panel 24 and a curved surface-shaped shadow mask 36 having an effective curved surface in which many holes are formed through which electron beams pass. A radius of curvature in Y-axis direction on a crossing line of this panel effective curved surface with Y-axis (a minor axis) is made smaller on the periphery than that in the center of a faceplate. Accordingly, it is possible to ristrict deterioration due to disformation while restricting thermal disformation of the shadow mask 36 and also to give a reflected image with no sense of incompatibility.

公开(公告)号：JPS63181243A

公开(公告)日：1988-07-26

申请号：JP1125687

申请日：1987-01-22

Applicant: TOSHIBA CORP

Inventor： INOUE MASACHIKA ,  TOKITA KIYOSHI ,  SONE TOSHIHISA

IPC: H01J29/07 ,  H01J29/86

Abstract: PURPOSE:To effectively control the thermal deformation of a shadow mask regardless of the flatness of a faceplate by forming a curved surface shadow mask into a specific shape. CONSTITUTION:The Z-axis is set in the tube axis direction of a color cathode- ray tube, the long X-axis is set in the horizontal direction of a shadow mask, and the short Y axis is set vertically to it. The Z-axis direction distance between a top point M1 on the X-Z axis plane of the intersecting line Y2 between the plane parallel to the Y-Z axis and the effective curved surface of the shadow mask and a point N1 or N'1 at the effective end section of the longitudinal side, i.e., the height on the cross section parallel to the short Y-axis of the shadow mask, is increased as it approaches the effective end section P of the X-axis from the Y-axis (X=0) gradually at first and becomes maximum at the middle point M1 then is decreased gradually. It is slightly larger at the end section P than on the Y-axis. Accordingly, the mislanding of the shadow mask due to the thermal deformation can be effectively corrected.

公开(公告)号：JPS62186439A

公开(公告)日：1987-08-14

申请号：JP2780686

申请日：1986-02-13

Applicant: TOSHIBA CORP

Inventor： INOUE MASACHIKA ,  YAMAZAKI HIDETOSHI

IPC: H01J9/227

Abstract: PURPOSE:To prevent a meandering and constriction of the stripes formed in the inner surface of a panel, by specifying the form of the outer and inner surfaces of a negative meniscus lens, where the light of a long light source is radiated and exposed to the inner surface of the panel through a transmission hole of a shadow mask. CONSTITUTION:The light of a long light source 3 is radiated to the inner surface of a panel through a meniscus lens 22, a landing correction lens, and a light distribution correcting filter, and through a slot form transmission hole of a shadow mask, to form a stripe form phosphor layer. In this case, where the center axis of the lens 22 is Z, the longitudinal axis of the long light source 3 is Y, and the lateral axis of the long light source is X, the curvature of the crossing line of the center surface of the lens 22, and, the YZ plane and YZ parallel plane is made smaller around the top 23 and larger at the periphery. At the same time, the curvature of the inner surface of the lens 22 and those planes is also made smaller at the periphery than at the top 23. Therefore, the meandering or constriction of the stripes inside the panel can be corrected very efficiently.

公开(公告)号：JPS62186438A

公开(公告)日：1987-08-14

申请号：JP2780586

申请日：1986-02-13

Applicant: TOSHIBA CORP

Inventor： INOUE MASACHIKA ,  YAMAZAKI HIDETOSHI

IPC: H01J9/227

Abstract: PURPOSE:To prevent the meandering and constriction of the stripes formed inside the panel, by specifying the outer surface of a negative meniscus lens when the light of a long light source is radiated and exposed in the inner surface of the panel through a transmission hole of a shadow mask. CONSTITUTION:The light of a long light source 3 is radiated to the inner surface of a panel through a meniscus lens 22, a landing correction lens, and a light distribution correcting filter, and through a slot form transmission hole, to form a stripe form phosphor layer. In this case, where the center axis of the lens 22 is Z, the longitudinal axis of the long light source 3 is Y, and the lateral axis is X, the curvature of the crossing line 24 of the outer surface of the lens 22 and the YZ plane is made smaller about at the center and larger at the periphery. At the same time, the crossing line of the YZ parallel plane and the outer surface of the lens 22 is also made larger at the periphery than at the top 23. Therefore, the meandering and constriction of the stripes formed inside the panel can be corrected very efficiently.

公开(公告)号：JPS61188836A

公开(公告)日：1986-08-22

申请号：JP2635285

申请日：1985-02-15

Applicant: TOSHIBA CORP

Inventor： INOUE MASACHIKA ,  YAMAZAKI HIDETOSHI

IPC: H01J29/07

Abstract: PURPOSE:To prevent deterioration of color purity due to welding by limiting the welding point with the shadowmask frame within two for one short side and two diagonal sections. CONSTITUTION:The shadowmask bodies 7-9 is made of low thermal expansion metal while the frame is made of common iron material where the shadowmask is welded to the inside of frame at three points on the long side while two points on the short side. Upon function of color picture tube, the frame will thermally expand to apply tensile force in the arrow direction through the welded points thus to vary the landing position of electron beam onto the fluorescent material, but since the welding points on short side and diagonal section is limited, outward tensile force of the shadowmask near the horizontal axis is weakened. Consequently, the difference of the variation of landing position of electron beam in horizontal direction near the horizontal axis and the diagonal axis is reduced resulting in cancellation of the deterioration of the color purality.

公开(公告)号：JP2002367530A

公开(公告)日：2002-12-20

申请号：JP2001171329

申请日：2001-06-06

Applicant: Toshiba Corp ,  株式会社東芝

Inventor： NAKAYAMA TAKESHI ,  MASHITA TAKUYA ,  TAKAHASHI TORU ,  INOUE MASACHIKA

IPC: H01J29/07

Abstract: PROBLEM TO BE SOLVED: To provide a color cathode-ray tube having a shadow mask with sufficient mask curve strength, and providing good picture quality.
SOLUTION: The shadow mask 7 comprises a mask body 14 and an auxiliary body 20 which overlie each other. The mask body has a principal mask plane 40 having an effective part opposed to approximately the overall surface of a phosphor screen and having electron-beam holes formed therein, and a skirt part 17 extending from a peripheral edge of the principal mask plane. The auxiliary mask is secured in place as it overlies an area near the minor axis Y of the effective part of the mask body, and is formed in a strip with the minor axis serving as its longitudinal direction. The auxiliary mask has a skirt part positioned to overlie the skirt part of the mask body. In the area where the mask body and the auxiliary body overlie, either the skirt of the mask body or the skirt part of the auxiliary mask is secured to the mask frame.
COPYRIGHT: (C)2003,JPO

Abstract translation: 要解决的问题：提供具有足够的掩模曲线强度的荫罩的彩色阴极射线管，并提供良好的图像质量。 解决方案：荫罩7包括彼此重叠的面罩主体14和辅助主体20。 荫罩主体具有主要的掩模平面40，其具有与荧光屏的大致整个表面相对的有效部分，并且具有形成有电子束孔的主掩模平面40以及从主掩模平面的周缘延伸的裙部17。 辅助掩模在掩模体的有效部分的短轴Y附近的位置处固定就位，并且形成为带有短轴作为其纵向方向的条带。 辅助面罩具有定位成覆盖在面罩主体的裙部上的裙部。 在面罩主体和辅助主体覆盖的区域中，面罩主体的裙部或辅助面罩的裙部部分固定在面罩框架上。

公开(公告)号：JP2002260548A

公开(公告)日：2002-09-13

申请号：JP2001381597

申请日：2001-12-14

Applicant: TOSHIBA CORP

Inventor： TAKAHASHI TORU ,  INOUE MASACHIKA

IPC: H01J29/07

Abstract: PROBLEM TO BE SOLVED: To provide a shadow mask increased in strength without thickening it and also provide a color cathode-ray tube improved in picture quality. SOLUTION: This shadow mask is disposed facing a phosphor screen and possesses a shadow mask body 23 having a nearly rectangular effective area with a minor axis and a major axis arranged in crossing at right angles. Each of many holes 24 formed in the effective area for passing through electron beams is shaped with a through hole by means of joining a large hole 27 opened on a surface of the effective area to a small hole on the other surface, and also a jointed portion 29 between the large hole and the small hole for passing through electron beams formed at least at the center portion of the effective area is shaped at the center part in the direction of thickness. However, a joint portion between the large hole and the small hole for passing through an electron beam formed in the periphery of the effective area is positioned near one side surface of the effective area, in addition the large hole is offset against the small hole in the direction of the major axis.

公开(公告)号：JP2002231158A

公开(公告)日：2002-08-16

申请号：JP2001022165

申请日：2001-01-30

Applicant: TOSHIBA CORP

Inventor： TAKAHASHI TORU ,  INOUE MASACHIKA ,  FUKUDA KUMIO

IPC: H01J9/14 ,  H01J29/07 ,  H01J29/81

Abstract: PROBLEM TO BE SOLVED: To provide a color cathode-ray tube with improved focus characteristics along the whole range of an image plane, and improved brightness for the whole body of the image plane, and a method for manufacturing the same. SOLUTION: In a shadow mask 12 disposed to face a phosphor screen 6 formed on an inner surface of a panel, plural aperture rows are provided, and each aperture row is composed of plural apertures 34 disposed in a line at a specified interval from each other. On both sides of each aperture row on an electron gun side surface of the shadow mask, stripes of dielectric layers 50 are respectively formed to be extended roughly in parallel to the aperture row to be electrified by radiation of an electron beam 8 to focus the electron beam toward the apertures. This shadow mask is manufactured by forming strips of insulating substance layers on an electron gun side surface of base material of a mask, forming the base material of the mask into a specified form, and baking the insulating substance layer on the shadow mask after formation.

公开(公告)号：JP2002117783A

公开(公告)日：2002-04-19

申请号：JP2001221922

申请日：2001-07-23

Applicant: TOSHIBA CORP

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

IPC: H01J29/07

Abstract: PROBLEM TO BE SOLVED: To provide a color cathode ray tube capable of preventing deformation and displacement when fixing a mask body to a mask frame. SOLUTION: The skirt part 23 of a mask body 30 has cutout parts NS and NL. The width of the cutout parts NS and NL along the short axis or long axis is not less than 0.10×L and not more than 0.45×L, when L is designated as a distance from the end of the short axis or the end of the long axis to their diagonal ends, and the height of the cutouts NS and NL along an tube axis is equal to 50-40% of the height of the skirt part 23 along the tube axis in the vicinity of the end of the short axis or the end part of the long axis when it is designated as 100%.

公开(公告)号：JP2002083556A

公开(公告)日：2002-03-22

申请号：JP2001198135

申请日：2001-06-29

Applicant: TOSHIBA CORP

Inventor： SHIMIZU NORIO ,  INOUE MASACHIKA

IPC: H01J29/07

Abstract: PROBLEM TO BE SOLVED: To provide a color cathode-ray tube with an enhanced image grade by preventing deterioration in color purity owing to beam landing displacement caused by deformation or doming of a shadow mask. SOLUTION: A panel is equipped with a substantially rectangular effective part having a substantially flat outer surface, and a phosphor screen is formed on an inner surface of the effective part. The shadow mask disposed opposite to the phosphor screen has a substantially rectangular mask body with a multiplicity of electron beam passing holes formed therein and a mask frame for supporting peripheral parts of the mask body. Spaces between passing holes along the major axis X direction of the mask body increase from the center of the mask body toward the ends of the major axis, and the rate of change of spaces between passing holes has a maximal value between the center of the mask body and each end of the major axis.