公开(公告)号：JP2001160362A

公开(公告)日：2001-06-12

申请号：JP34684699

申请日：1999-12-06

Applicant: TOSHIBA CORP

Inventor： SHIOZAWA HITOSHI

IPC: H01J29/07

Abstract: PROBLEM TO BE SOLVED: To provide a shadow mask for color picture, having an increased display property with causing deformation due to an impact or the like in the vicinity central portion. SOLUTION: On a mask plate 1 of a rectangular shadow mask, a large hoe portion 2a with a large hole size at the lager hole side is formed at the side face where an electron gun is positioned, and a rectangular hole 2 with different aperture sizes, forming a small hole portion 2b with a small hole size at the smaller hole side, is provided at the side face where a fluorescent face is positioned. The rectangular hole 2 is off-centered as going from the center to periphery, so that the smaller hole portion 2b is positioned closer to the center that the larger hole 2a is. An angle made between tangent of the wall 2c that the electron beam B is attracted in the direction of the fluorescent plane, and a perpendicular passing the center of the rectangular hole 2 is larger than that made between a trajectory that the electron beam B is incident into the rectangular hole 2 and a perpendicular which as through the center of the rectangular hole 2. This prevent an electron beam B from kicking in the rectangular hole 2.

公开(公告)号：JPH07335126A

公开(公告)日：1995-12-22

申请号：JP12413894

申请日：1994-06-07

Applicant: TOSHIBA CORP

Inventor： TSUKAGOSHI HATSUO ,  NAKAKUKI KAZUO ,  UBUKATA TOKUO ,  SHIOZAWA HITOSHI

IPC: H01J9/227

Abstract: PURPOSE:To provide a fluorescent screen forming method with less coming off of a fluorescent material layer and no generation of residue and color mixture. CONSTITUTION:A fluorescent screen forming method for a color cathode ray tube is provided in such a way that sensitive fluorescent material slurry is applied to the inner surface of a panel 1, dried to form a sensitive fluorescent material slurry layer 25, and a pattern corresponding to an aperture 21 of a shadow mask 7 is printed by ultraviolet exposure. Before the sensitive fluorescent material slurry is applied to the inner surface of the panel, a precoat solution containing an ultraviolet emission fluorescent material is applied, then dried to form a precoat layer 24 containing the ultraviolet emission fluorescent material.

公开(公告)号：JP2003132821A

公开(公告)日：2003-05-09

申请号：JP2001325362

申请日：2001-10-23

Applicant: TOSHIBA CORP

Inventor： NAKAMURA AKIYOSHI ,  NIKAIDO MASARU ,  SHIOZAWA HITOSHI

IPC: H01J29/80

Abstract: PROBLEM TO BE SOLVED: To provide a color cathode-ray tube enabling improvement of electron beam focusing characteristics over the whole displaying area and improvement of luminance intensity of the whole displaying area. SOLUTION: A shadow mask 12 is provided with a plurality of opening hole rows 19 disposed in parallel each other. Every opening hole row 19 comprises a plurality of opening holes 34 disposed in a row at a prescribed interval. A stripe-shaped projection 50 which is charged by electron beams irradiating it and thereby forcuses the electron beams toward opening hole sides is formed on an electron gun structure side surface of the shadow mask 12 and on both sides of every opening hole row 19. This projection 50 comprises the first pattern 50a which is disposed on both sides of the opening holes 34 in a mask area 20a where opening holes are disposed, and the second pattern 50b which is disposed being connected to the first pattern 50a on a frame area surrounding the mask area 20a.

公开(公告)号：JP2002270110A

公开(公告)日：2002-09-20

申请号：JP2001072621

申请日：2001-03-14

Applicant: TOSHIBA CORP

Inventor： NAKAMURA AKIYOSHI ,  NIKAIDO MASARU ,  SHIOZAWA HITOSHI

IPC: H01J29/07

Abstract: PROBLEM TO BE SOLVED: To provide a shadow mask and a color picture tube with improved mask strength and prevented from image degradation in view of conventional constitution wherein the curvature of the shadow mask is made small to correspond to a large screen and flattening, but the mask strength of the shadow mask is lowered by setting the curvature small, which easily causes the deformation of a mask surface and the dispersion of a phosphor screen at each corner part and further the degradation of screen quality. SOLUTION: A width d between a coincidence point 29 formed by a large hole 27 and a small hole 28 constituting an electron beam passage hole 24, and the center side open edge of the small hole 28, and the aperture diameter D' of the large hole 27 are set to satisfy d>0.08×T and D'

公开(公告)号：JP2002075239A

公开(公告)日：2002-03-15

申请号：JP2000256063

申请日：2000-08-25

Applicant: TOSHIBA CORP

Inventor： NIKAIDO MASARU ,  SHIOZAWA HITOSHI ,  TAJIMA YOSHIHIRO

IPC: C23C14/24 ,  H01J9/20 ,  H01J9/22 ,  H01J29/28

Abstract: PROBLEM TO BE SOLVED: To provide a color cathode-ray tube which has a metal back membrane that is stable in deposition property and low cost, and has a high heat absorption. SOLUTION: This color cathode-ray tube comprises a metal back membrane that contains a joint deposition layer of a metal such as aluminum and a metal oxide having a high heat absorption. As a metal oxide having a high heat absorption, Fe3O4, NiO, NiFe2O3, Cr2O3, MnO are provided. And this metal back membrane can be formed by vacuum deposition of an deposition compound material comprising a bar-shape core material made of a mixture of a metal powder such as aluminum and a metal oxide powder having a high heat absorption, and an outer package material made of a metal such as aluminum and provided closely contacting this core material and covering it.

公开(公告)号：JPH11283525A

公开(公告)日：1999-10-15

申请号：JP8382198

申请日：1998-03-30

Applicant: TOSHIBA CORP

Inventor： OTAKE YASUHISA ,  SHIOZAWA HITOSHI ,  NAKAMURA AKIYOSHI ,  NIKAIDO MASARU

IPC: H01J29/07

Abstract: PROBLEM TO BE SOLVED: To structure a shadow mask for preventing brightness and white uniformity from being deteriorated by a distortion of an electron beam shape, caused by the electron beam colliding against the aperture rim and inner wall of the aperture, and to prevent contrast and color purity from being deteriorated by a reflected beam. SOLUTION: In a shadow mask for a color picture tube, its aperture 21 is formed to have a shape, in which on a short axis of an effective surface, an aperture rim of a large hole 24 at the short axis side of the effective surface is positioned closer to the short axis side of the effective surface than to an aperture rim side of a small hole 26, a position difference between the aperture rim of the large hole at the short axis side of the effective surface and the aperture rim of the small hole is furthers reduced as it becomes closer to the peripheral area of a long axis direction of the effective surface, and the aperture rim of the small hole is positioned closer to the short axis of the effective surface than to the aperture rim of the large hole at the short axis side of the effective surface.

公开(公告)号：JP2003016955A

公开(公告)日：2003-01-17

申请号：JP2001201284

申请日：2001-07-02

Applicant: Toshiba Corp ,  株式会社東芝

Inventor： NIKAIDO MASARU ,  ISHIKAWA SATOSHI ,  SHIOZAWA HITOSHI ,  NAKAMURA AKIYOSHI

IPC: H01J29/07

Abstract: PROBLEM TO BE SOLVED: To provide a color cathode-ray tube that can improve a focusing property of electron beams over the whole region of a screen and improve the brightness of the whole region of the screen.
SOLUTION: A shadow mask is provided with a plurality of aperture trains 19 arranged in parallel. Each aperture train 19 is composed of a plurality of apertures 34 arranged in a line with prescribed spaces. Striped dielectric layers 50 charged by the irradiation of electron beams to focus the electron beams on the aperture side are formed on both sides of each aperture train 19 on the electron gun structure side surface of the shadow mask 12. The average surface roughness of the dielectric layer is 0.2 μm or less, the dielectric constant is 3 or more, and the volume resistivity is 1.0E+12 to 1.0E+15 Ω.cm.
COPYRIGHT: (C)2003,JPO

Abstract translation: 要解决的问题：提供一种彩色阴极射线管，其可以提高电子束在屏幕的整个区域上的聚焦性能，并提高屏幕整个区域的亮度。 解决方案：荫罩设置有并列布置的多个光圈列19。 每个孔径列19由排列成规定空间的多个孔34组成。 在荫罩12的电子枪结构侧表面上的每个孔列19的两侧形成通过照射电子束而将电子束聚焦在孔侧的带状电介质层50.电介质的平均表面粗糙度 介电常数为3以上，体积电阻率为1.0E + 12〜1.0E +15Ω·cm。

公开(公告)号：JPH07226154A

公开(公告)日：1995-08-22

申请号：JP1502894

申请日：1994-02-09

Applicant: TOSHIBA CORP

Inventor： TSUKAGOSHI HATSUO ,  UBUKATA TOKUO ,  SHIOZAWA HITOSHI

IPC: H01J9/227

Abstract: PURPOSE:To stably form a perfect fluorescent screen by the defoaming effect by forming a phosphor layer by using photosensitive phosphor slurry containing at least a polyoxyalkylene glycol derivative as a surface active agent. CONSTITUTION:(a) Photoreceptor slurry is applied to and dried on an inside surface of a panel 4, and a photosensitive phosphor slurry layer 10 is formed. (b) A shadow mask 3 is installed on it, and is exposed, and a pattern corresponding to an electron beam passing hole 11 is baked on the layer 10. (c) The layer 10 is developed, and an unsensitized part is removed, and a phosphor layer 12B of an optional single color is formed. (d) On the other two colors, similar work is repeated, and three-color phosphor layers 12B, 12G and 12R are formed. Slurry is mainly composed of phosphor, PVA and ADC, and preferably contains polyoxyethylene polyoxypropylene ethylene diamine by 0.5 to 0.75weight% to the PVA as a surface active agent.

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：JP2004071323A

公开(公告)日：2004-03-04

申请号：JP2002228259

申请日：2002-08-06

Applicant: Toshiba Corp ,  株式会社東芝

Inventor： SHIOZAWA HITOSHI ,  NIKAIDO MASARU

IPC: H01J29/07 ,  H01J29/81

Abstract: PROBLEM TO BE SOLVED: To provide a color cathode-ray tube enhancing electron beam focusing characteristics over the whole region of a screen and enhancing brightness over the whole region of the screen and to provide the manufacturing method of the color cathode-ray tube.
SOLUTION: A shadow mask 12 has a plurality of aperture lines 19 arranged in parallel, and each aperture line 19 is constituted with a plurality of apertures 34 arranged in a line at the specified intervals. A stripe-shaped projecting part 50 being charged by irradiation of electron beams and focusing electron beams on the aperture side is formed on both sides of each aperture line 19 on the surface on the electron gun body structure side of the shadow mask 12. The projecting part 50A has a dielectric layer 50A and a low resistance layer 50B having specific volume resistance lower than the dielectric layer 50A and laminated on the dielectric layer 50A.
COPYRIGHT: (C)2004,JPO