公开(公告)号：JP2000277027A

公开(公告)日：2000-10-06

申请号：JP7955799

申请日：1999-03-24

Applicant: TOSHIBA CORP

Inventor： TANI MUNECHIKA ,  MURAI TAKASHI ,  INOUE MASAFUMI ,  SUZUKI FUMITO ,  UCHIGAWA TOSHIO

IPC: H01J29/07

Abstract: PROBLEM TO BE SOLVED: To provide a color picture tube capable of preventing undesired light emission from a phosphor layer occurring when an electron beam collides and reflects on a sidewall of an open hole and capable of suppressing degradation of mechanical strength of a shadow mask. SOLUTION: An open hole of a shadow mask of this color picture tube is so structured that a small hole on an opposite side of a large hole on a phosphor screen side is made eccentric in a center direction of the shadow mask except at a center A of the shadow mask and an eccentricity of the small hole to the large hole is maximum at an intermediate part B between a center and a peripheral part of the shadow mask. When the quantity of eccentricity is set to be maximum at the intermediate part between the center part of the shadow mask and the peripheral part in a longitudinal direction, degradation of mechanical strength of the shadow mask is prevented, and undesired light emission from the phosphor layer occurring when an electron beam collides on a sidewall of the large hole and reflects in a phosphor screen direction is prevented so as to structure a color picture tube capable of displaying a good quality image. And particularly, an outer surface of an effective part of the panel is applied to a flat color picture tube to obtain a remarkable effect.

公开(公告)号：JP2004185981A

公开(公告)日：2004-07-02

申请号：JP2002351331

申请日：2002-12-03

Applicant: Toshiba Corp ,  株式会社東芝

Inventor： SHIMIZU NORIO ,  UCHIGAWA TOSHIO

IPC: H01J29/07 ,  H01J29/86

CPC classification number: H01J29/861 ,  H01J29/07 ,  H01J2229/0788 ,  H01J2229/862

Abstract: PROBLEM TO BE SOLVED: To provide a color cathode-ray tube which can make brightness uniform over the whole displaying area, can display images with low distortion and high quality, and is excellent in visibility.
SOLUTION: A mask body 7 satisfies the following conditions in an effective area 7A in nearly rectangular shape with a specified curvature: (ZMD-ZMH)/LMS≥0.020 and 0.065≤ZMD/LMD≤0.095, where LMD is the distance from a center to a diagonal axis end, LMS is the distance from a horizontal axis end to the diagonal axis end, ZMD is the height difference between the center and the diagonal axis along the tube axis, and ZMH is the height difference between the center and the horizontal axis along the tube axis.
COPYRIGHT: (C)2004,JPO&NCIPI

公开(公告)号：JP2000331628A

公开(公告)日：2000-11-30

申请号：JP14162499

申请日：1999-05-21

Applicant: TOSHIBA CORP

Inventor： INOUE MASAFUMI ,  MURAI TAKASHI ,  TANI MUNECHIKA ,  SUZUKI FUMITO ,  UCHIGAWA TOSHIO

IPC: H01J29/87

Abstract: PROBLEM TO BE SOLVED: To provide an explosion-proof flat panel cathode-ray tube increasing an installation precision to a picture receiver by improving the structure of an installing part. SOLUTION: An explosion-proof flat panel cathode-ray tube 1 is structured such that an explosion-proof band 5 is attached to the outer periphery of sidewalls of an enclosure comprising a panel 2 having an image displaying surface with a uniformly flattened effective surface and a funnel 3, and a lug 6 having a installing piece 8 with an opening for installing to a receiving body 21 of an image receiver is fixed on the explosion-proof band 5. An angle between a band joining surface 7a on the lug 6 joined to the explosion-proof band 5 in the tube axis direction and an installing surface 8a of the installing piece 8 joined to a receiving surface 21a of the receiving body 21 is arranged as 0 deg.

公开(公告)号：JP2004071441A

公开(公告)日：2004-03-04

申请号：JP2002231096

申请日：2002-08-08

Applicant: Toshiba Corp ,  株式会社東芝

Inventor： UCHIGAWA TOSHIO ,  SHIMIZU NORIO

IPC: H01J29/07

Abstract: PROBLEM TO BE SOLVED: To provide a color cathode-ray tube capable of improving a mechanical strength and displaying a high-quality and high-definition images.
SOLUTION: A shadow mask main body 29 is provided with long sides almost parallel with a horizontal axis H and short sides almost parallel with a short axis. A curvature radius of a perforated part 29A on the horizontal axis H monotonously decreases from the center of the perforated part 29A toward an end of the horizontal axis, and at the perforated part 29A at the side of the long sides from the horizontal axis H, the curvature radius on a line parallel with the horizontal axis H has a maximum value between a vertical axis V and the short sides 29S.
COPYRIGHT: (C)2004,JPO

Abstract translation: 要解决的问题：提供能够提高机械强度并显示高质量和高清晰度图像的彩色阴极射线管。 荫罩主体29设置有与水平轴线H几乎平行的长边和与短轴几乎平行的短边。 穿孔部29A在水平轴线H上的曲率半径从穿孔部件29A的中心朝向水平轴线的端部单调减小，并且在距离水平轴线H的长边侧的穿孔部件29A处， 与水平轴线H平行的直线上的曲率半径在垂直轴线V和短边29S之间具有最大值。 版权所有（C）2004，JPO

公开(公告)号：JP2001343756A

公开(公告)日：2001-12-14

申请号：JP2000160890

申请日：2000-05-30

Applicant: TOSHIBA CORP

Inventor： TANI MUNECHIKA ,  UCHIGAWA TOSHIO ,  INOUE MASACHIKA

IPC: G03F7/24 ,  H01J9/227

Abstract: PROBLEM TO BE SOLVED: To uniformly expose the fluorescent surface of a panel of a color image picture tube. SOLUTION: An exposure device 10 has a support base 12 for positioning a panel 1, a light source L and plural correction lenses 16a, 16b, 16c and 16d which correct the orbit of light. The flanks or non-use regions of the at least one correction lenses are subjected to black coating. The scattering of the unwanted light in exposure reduced, and the illuminance of the exposure range on the inside surface of the panel 1 is readily optimized and the satisfactory fluorescent surface 3 may be formed.