公开(公告)号：JPS62285337A

公开(公告)日：1987-12-11

申请号：JP12809286

申请日：1986-06-04

Applicant: TOSHIBA CORP

Inventor： KOIKE NORIO

IPC: B05D7/24 ,  C23C24/00 ,  H01J9/14 ,  H01J29/07

Abstract: PURPOSE:To prevent the occurrence of falling-off particles by applying a suspension containing a metal-alkoxide compound, and at least one substance selected from a group of a metal oxide, a carbide and a nitride to the surface of a shadow mask and applying a metal-alkoxide compound over said film. CONSTITUTION:A metal-alkoxide compound14 applied to the surface of a shadow mask 7 performs hydrolysis by absorbing moisture or the like in the atmosphere to form a film caused by polycondensation reaction among alkoxides themselves to act as a binder of a filler such as a metal oxide, a carbide or nitride. The phenomenon described above enables them to form a strong layer. Thereby, further application of the metal-alkoxide compound 14 on to the surface layer having a large containing rete of filer particles acts as a binder which prevents the film from falling-off of particles in the succeding process.

公开(公告)号：JPS6273535A

公开(公告)日：1987-04-04

申请号：JP21216985

申请日：1985-09-27

Applicant: TOSHIBA CORP

Inventor： MATSUDA SHUZO ,  ITO TAKEO ,  KOIKE NORIO

IPC: H01J29/88 ,  H01J29/94

Abstract: PURPOSE:To reduce a deterioration of emission property of a cathode-ray tube owing to a long service, by furnishing a substance of a specific ratio of surface area inside the cathode-ray tube, and specifying the surface area of the substance per a unit volume in the tube. CONSTITUTION:By feeding a substance with a surface area ratio more than 10m /g and less than 1,100m /g inside a cathode-ray tube, to make the surface area of the substance more than 2.2X10 m /cm and less than 2.8X10 m /cm per a unit volume of the tube, hydrocarbon and the other gas in the cathode-ray tube can be absorbed to the surface of the substance, and the emission surviving rate is improved broadly. Therefore, the service life of the CRT is extensively improved, operating correctly for a longer period, and an excellent picture can be reproduced.

公开(公告)号：JPS6245683A

公开(公告)日：1987-02-27

申请号：JP18393485

申请日：1985-08-23

Applicant: TOSHIBA CORP

Inventor： KOIKE NORIO ,  ITO TAKEO ,  MATSUDA SHUZO ,  SAGO SEIJI

IPC: C09K11/08 ,  H01J29/20

Abstract: PURPOSE:To improve the brightness, contrast, etc., by preparing a cathode ray tube having a phosphor layer comprised of phosphor particles having a pigment deposited thereon in such a manner that the pigment is deposited in a state of dispersion in a ceramic film having a small refractive index. CONSTITUTION:A pigment which selectively exhibits a high degree of reflection in the same region as the luminescent color of phosphor particles 11 used (e.g., blue pigment comprising cobalt aluminate) is mixed with an ethanol soln. of an alcoholate compd. of silicon to prepare a pigment dispersion. The pigment dispersion is mixed with the particles of a phosphor (e.g., ZnS:AG,Cl blue phosphor). The mixture is calcined to form a ceramic film comprising an amorphous silica film 13 contg. pigment 12 dispersed therein on the surface of the phosphor particles 11. A phosphor layer comprising the phosphor thus obtd. is formed on the inside surface of a panel, followed by provision of an electron gun which emits cathode rays, thereby obtaining an intended cathode ray tube. This improves the reflection on the surface of the pigment 13 and adhesion of the pigment to the phosphor 11.

公开(公告)号：JPS61243641A

公开(公告)日：1986-10-29

申请号：JP8441185

申请日：1985-04-22

Applicant: TOSHIBA CORP

Inventor： ITO TAKEO ,  KOIKE NORIO

IPC: H01J29/32

Abstract: PURPOSE:To improve the brightness and contrast of fluorescent screen while to eliminate uneven brightness by covering the surface of fluorescent particles constituting a fluorescent screen with filter film thereby suppressing the energy loss of electron beam due to the filter particles to the minimum while preventing drop-out from the fluorescent particles. CONSTITUTION:The fluorescent screen is composed of fluorescent particle layer having specific grain size where the surface of the fluorescent particle is covered with a filter film of same system color with the light to be emitted from the fluorescent particles. For example, a filter film 31 is formed onto the surface of fluorescent particle 30 conditioned to have the average grain size of 3-20mum. The thickness of the filter film 31 can be selected properly with correspondence to the excitation energy of electron beam to be smaller than 1.5mum or 2mum, respectively for 25kV and 30kV. The filter film 31 is formed as a continuous glass layer or a partially discontinuous layer onto the surface of the fluorescent particles 30 of metal oxide film.

公开(公告)号：JPS61136579A

公开(公告)日：1986-06-24

申请号：JP25641684

申请日：1984-12-06

Applicant: Toshiba Corp

Inventor： KOIKE NORIO ,  ITO TAKEO ,  TSUKAGOSHI HATSUO ,  KAWAMATA TAKAMITSU

IPC: C09K11/08 ,  C09K11/56 ,  H01J29/20

Abstract: PURPOSE: A cathode ray tube provided with a phosphor prevented from emitting foreign color due to contamination without causing non-uniformity or deviation of color tone, which is obtd. by doping a blue light-emitting phosphor for a cathode ray tube with Co so as to form a film of a thickness not larger than a specified value.
CONSTITUTION: A blue light-emitting phosphor for a cathode ray tube selected from among ZnS phosphor activated with silver, silver and Al, or chlorine and emitting light by cathode ray excitation, is doped with 0.1W20ppm Co at a baking temp. of 550W750°C to obtain a cathode ray tube provided with a phosphor of a film thickness ≤0.1μm and critical light emission voltage ≤4.4kV having max. Co concn. on the surface of the blue light-emitting phosphor, of which reduction of light-emitting power due to the doping is suppressed to be not more than 10%.
COPYRIGHT: (C)1986,JPO&Japio

Abstract translation: 目的：设置有荧光体的阴极射线管防止由于污染而发生异色，而不会引起色调的不均匀或偏差。 通过用Co掺杂用于阴极射线管的蓝色发光荧光体，以便形成厚度不大于指定值的膜。 构成：选自用银，银和Al活化的ZnS荧光体中的阴极射线管的蓝色发光荧光体，通过阴极射线激发发光的蓝色发光荧光体，在烘烤温度下掺杂0.1〜20ppmCo。 为550-750℃，得到具有膜厚<=0.1μm的荧光体和具有最大值的临界发光电压<= 4.4kV的阴极射线管。 公司 在蓝色发光荧光体的表面上，由于掺杂而导致的发光功率的降低被抑制在不大于10％。

公开(公告)号：JPS58189288A

公开(公告)日：1983-11-04

申请号：JP7117982

申请日：1982-04-30

Applicant: Toshiba Corp

Inventor： KOIKE NORIO ,  ITOU TAKEO ,  ISORI KUNIHIRO

IPC: C09K11/08 ,  C09K11/02 ,  H01J9/227 ,  H01J29/20 ,  H01J29/32

Abstract: PURPOSE: To obtain a color picture tube with low reflectance and high contrast, by using a red light emitting fluorescent material of a florescent surface, to which a chrome vermillion red pigment coated with a specified amt. of silica has been added.
CONSTITUTION: A red light emitting fluorescent material of a fluorescent surface emitting light under cathode ray excitation, to which has been added a chrome vermillion red pigment coated with silica, is used, wherein 100pts.wt. said pigment is coated with 25W800pts.wt. silica. Said chrome vermillion red pigment particle has a reflectance in a red region of ≤5, 5W10, 55W65, 80W95 and 85W 95%, respectively, at the wavelength of 500, 550, 600, 650 and 700nm, when the reflectance of a calcium carbonate diffusion panel is assumed to be 100%.
COPYRIGHT: (C)1983,JPO&Japio

Abstract translation: 目的：为了获得具有低反射率和高对比度的彩色显像管，通过使用涂覆有特定amt的镀铬朱红色颜料的荧光表面的红色发光荧光材料。 的二氧化硅。 构成：使用在阴极射线激发下发射光的荧光表面的红色发光荧光材料，向其中加入涂覆有二氧化硅的铬榴辉红色颜料，其中100pts.wt。 所述颜料涂覆有25-800pts.wt。 二氧化硅。 所述铬榴辉红色颜料颗粒在500,550,6600,650和700nm的波长处的红色区域的反射率分别为<= 5，5-10，55-65，80-95和85-95％ 当碳酸钙漫射面板的反射率为100％时。

公开(公告)号：JP2001338574A

公开(公告)日：2001-12-07

申请号：JP2000160889

申请日：2000-05-30

Applicant: TOSHIBA CORP

Inventor： GAMO YASUNORI ,  KIMURA SEIJI ,  KOIKE NORIO ,  KOYAIZU SATOKO

IPC: C23F1/00 ,  H01J9/14

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a shadow mask which is capable of reducing nonuniformity and defect of the shadow mask in the manufacture. SOLUTION: This method of manufacturing the shadow mask is as follows. A photoresist film is formed on a long metal thin film P. After development by exposing the resist film via a mask pattern, then the metal thin plate P is cleaned by aqueous solution S of which the major components are nonionic surfactant and a polyphosphoric acid chelating agent. After taking processes of drying and burning the cleaned metal thin plate P, a through hole is formed by etching. Generation of water spots after drying, accompanying remained water drops to the resist film with a mask pattern formed on it, can be prevented. The nonuniformity and defect generated at manufacture of the shadow mask can be reduced.

公开(公告)号：JPH1173879A

公开(公告)日：1999-03-16

申请号：JP23369397

申请日：1997-08-29

Applicant: TOSHIBA CORP

Inventor： KOIKE NORIO ,  KOYAIZU TAKESHI

IPC: H01J9/38 ,  H01J9/227

Abstract: PROBLEM TO BE SOLVED: To suppress the degradation of image quality by sharply reducing the damage on the coating film of the upper layer, mainly made of SnO2 in particular, of a reflection preventing film by hydrofluoric acid vapor at the time of the hydrofluoric acid pickling of a panel inner face during the black matrix forming process. SOLUTION: A peeling paint is applied and dried to the outer surface of a glass panel having a reflection preventing film, then the glass panel inner face is pickled, and a black matrix is formed on the washed glass panel inner face. The peeling paint is applied and dried to the panel outer surface to form an acid protective film before the glass panel inner face is pickled, and the reflection preventing film can be effectively prevented from being damaged by the hydrofluoric acid used for the pickling process.

公开(公告)号：JPH10334823A

公开(公告)日：1998-12-18

申请号：JP14653297

申请日：1997-06-04

Applicant: TOSHIBA CORP

Inventor： KOIKE NORIO ,  TAKAHASHI YOSHINORI ,  MATSUDA SHUZO

IPC: H01J29/20 ,  H01J29/18 ,  H01J29/32

Abstract: PROBLEM TO BE SOLVED: To improve the color purity of red, without lowering the luminance of a fluorescent face consisting of phosphor layers of three colors, and to provide a color image-receiving tube having a wide color reproduction area by setting the luminance of a red phosphor to be more than the specific times the luminance of a blue phosphor. SOLUTION: The luminance of a red phosphor is determined to be more than 1.40 times that of a blue phosphor. Further, the blue phosphor is made of ZnS:Ag, the red phosphor of Y2 O2 S:Eu, the concentration of an activating agent Ag in the blue phosphor is 0.15-0.8 wt.%, and that of an activating agent Eu of the red phosphor is 3.5-6.1 wt.%. In a color image-receiving tube in which a fluorescent face made of the phosphor layers of three colors 13B, 13G, 13R, a ratio of the luminance of the red phosphor and that of the blue phosphor contributes significantly in the extension of the color reproduction area. On the other hand, it is necessary to set a chromaticity value of the red emission to be more than 0.612 for the red phosphor, considering the present color image- receiving tube.

公开(公告)号：JPH0354292A

公开(公告)日：1991-03-08

申请号：JP19086489

申请日：1989-07-24

Applicant: TOSHIBA CORP

Inventor： KOIKE NORIO ,  SUGANO SATOSHI

IPC: C09K11/56

Abstract: PURPOSE:To provide a cathode ray tube with a green phosphor film with improved electric current brightness saturation characteristics and peak brightness by providing a phosphor film consisting of a green phosphor wherein zinc sulfide is a matrix and specified amt. of activation of copper, silver and aluminum are activators. CONSTITUTION:Using zinc sulfide as a matrix, copper in an amt. of activation of 8X10 -3.5X10 g based on 1 g of the matrix, silver in an amt. of activation of 0.1X10 -30X10 g based on 1 g of the matrix and aluminum are incorporated as activators to prepare a green phosphor. Then, a fluorscent face 8 consisting of a light absorbing layer consisting of a green emission phosphor film consisting of this green phosphor, a phosphor film with blue emission, a phosphor film with red emission and a black substance filling gaps among these three kinds of phosphor films is provided on the inner face of a panel 1 to prepare a cathode ray tube 3.