公开(公告)号：JP2002194570A

公开(公告)日：2002-07-10

申请号：JP2000393204

申请日：2000-12-25

Applicant: TOSHIBA CORP

Inventor： ICHIKAWA KATSUMI ,  KOIKE NORIO

IPC: G03F7/40 ,  C23F1/00 ,  G03F7/42 ,  H01J9/14

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing electronic components, which does not cause discoloration due to foreign materials on the surface of a metal sheet, after peeling a resist film, in the method for manufacturing the electronic components by etching the metal sheet, with a photoetching method using the resist film as a mask. SOLUTION: The manufacturing method is characterized by repeatedly using a peeling liquid (7) several times, and controlling a quantity of all Cr in the peeling liquid (7) to be 50 mg/l or less, in the method for manufacturing the electronic components comprising steps of; applying photopolymer on at least one side of a metal sheet (1), and forming the photopolymer layer (2a, 2b); forming a resist film (3a, 3b) having several openings through which the surface of the metal sheet is exposed, according to a predetermined pattern, on at least one side of the metal sheet (1), by subjecting the photopolymer layer (2a, 2b) to a pattern exposure/development process; etching the metal sheet (1) by using the resist film (3a, 3b) as the mask; and peeling the resist film (3a, 3b) by contacting the peeling liquid (7).

公开(公告)号：JP2000345373A

公开(公告)日：2000-12-12

申请号：JP15861699

申请日：1999-06-04

Applicant: TOSHIBA CORP

Inventor： KOYAIZU SATOKO ,  KOIKE NORIO

IPC: H01J9/14 ,  C23F1/00 ,  C23F1/02

Abstract: PROBLEM TO BE SOLVED: To obtain a high grade shadow mask in which desired fine through holes are formed. SOLUTION: This process includes the following steps: a step of forming, by coating, photoresist layers 2, 2' on both surfaces of an 'Invar(R)' material 1, respectively; a first etching step where a plurality of fine recessed holes 5 are formed on the surface of the 'Invar(R)' material by applying etching to bare parts uncoated with the photoresist layers 2, 2' on the surface of the 'Invar(R)' material; a coating step where the surface on which the fine recessed holes are formed is coated with an etching-resistant layer 6; and a second etching step where etching is applied from the rear side uncoated with the etching- resistant layer to form a plurality of fine through holes communicating with the plurality of fine recessed holes on the surface side, respectively. In the course between the step of forming the photoresist layers by coating and the first etching step, a polymer film 10 having a film width narrower than the width of the 'Invar(R)' material 1 and having a prescribed adhesion is allowed to adhere to the photoresist layer on the rear side of the 'Invar(R)' material.

公开(公告)号：JPH11233018A

公开(公告)日：1999-08-27

申请号：JP3119198

申请日：1998-02-13

Applicant: TOSHIBA CORP

Inventor： SARUTA HISASHIROU ,  TAKAHASHI YOSHINORI ,  ONODERA MAKOTO ,  KOIKE NORIO

IPC: H01J9/227

Abstract: PROBLEM TO BE SOLVED: To provide a color cathode-ray tube which is free of deterioration in uniformity, high in brightness and contrast by eliminating the residues and fall-outs of the phosphors over a filter layer in the forming process of the fluorescent screen with a filter for a color cathode-ray tube. SOLUTION: This forming method of the fluorescent screen comprises: a step of forming a filter pattern composed of a pigment layer, including plural colors such as blue, green, and red, on the inner surface of a panel; a step of coating acidified colloidal silica solution over the panel; a step of drying it by heating the inner surface of the panel to 50 deg.C or more; and a step of forming a phosphor layer having luminescent color corresponding to a pigment layer in the lower layer over the silica layer thus formed. Preferably, the particle diameter of colloidal silica is 15 nm or less, and the pH of the solution is in a range of 2.0 to 5.0. The panel inner surface is heated by spraying, for example, hot air whose temperature is 100 deg.C or more and wind speed is equal to or higher than 0.5 m/s.

公开(公告)号：JPH1173878A

公开(公告)日：1999-03-16

申请号：JP23369497

申请日：1997-08-29

Applicant: TOSHIBA CORP

Inventor： KOIKE NORIO ,  ABE MICHIYO

IPC: H01J9/20 ,  H05K9/00

Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method of a cathode-ray tube capable of stably forming a conductive film satisfactorily functioning as an AEF preventing film on the outer surface of the front panel of a faceplate and capable of forming the high-quality conductive film having no drying irregularity. SOLUTION: A solution containing conductive fine grains is applied and dried to the surface of the front panel of a faceplate to form an undercoating layer, a finish coating layer mainly made of SiO2 is formed on the undercoating layer, then the undercoating layer and the finish coating layer are baked to manufacture a cathode-ray tube. The alcohol concentration of the undercoating layer in the atmosphere at least during the drying process is controlled. When the alcohol concentration under the saturated vapor pressure in the atmosphere at 25 deg.C is set to 0.1×10 g/cm or below, for example, a conductive film satisfactorily functioning as an AEF preventing film can be formed, and the high- quality conductive film having no drying irregularity can be obtained.

公开(公告)号：JPH1064427A

公开(公告)日：1998-03-06

申请号：JP21565096

申请日：1996-08-15

Applicant: TOSHIBA CORP

Inventor： KOIKE NORIO ,  TAKAHASHI YOSHINORI

IPC: H01J9/227

Abstract: PROBLEM TO BE SOLVED: To provide the color cathode-ray tube which is free of deterioration in uniformity, and high in brightness and contrast by eliminating the residues and falling-offs of the phosphors over a filter layer in the forming process of the fluorescent screen with a filter for a color cathode-ray tube. SOLUTION: After a filter pattern composed of a pigment layer, including plural colors such as blue, green, red and the like has been formed on the inner surface of a panel, acidified colloidal silica solution is coated over the panel so as to be dried, and next a phosphor layer having luminescent color corresponding to a pigment layer in the lower layer, is thereby formed over a silica layer thus formed. It is desirable that the grain size of colloidal silica is not more than 15mm, and the pH of the solution is in the range of 2.0 to 5.0.

公开(公告)号：JPS63124346A

公开(公告)日：1988-05-27

申请号：JP26958686

申请日：1986-11-14

Applicant: TOSHIBA CORP

Inventor： KOIKE NORIO ,  OIKAWA MITSUHIRO

IPC: H01J29/20 ,  C09K11/56 ,  H01J29/50

Abstract: PURPOSE:To obtain a color picture tube of high resolution and high brightness and to prevent yellow directional color shifting at the peak of brightness by using ZnS:Ag, Al for a blue luminous phosphor and forming an electron gun into the one of a long focal point lens. CONSTITUTION:A blue luminous phosphor layer composing a fluorescent screen 13 is made of Ag and Al as active agents and a ZnS:AgAl phosphor containing Ag of 0.055 wt% to 0.085 wt% in a mother material. An electron gun 17 is formed in such structure that a prescribed voltage is applied to a required electrode through a resistor 21. Hence, when a spot diameter of electron beams incident to a fluorescent screen is made small by a long focal point lens system, resolution can be upgraded. when properties of the blue luminous phosphor are utilized to combine this tube with the electron gun, high brightness can be obtained and color shifting can be prevented from occurring at the peak of white brightness.

公开(公告)号：JPS62154528A

公开(公告)日：1987-07-09

申请号：JP29596685

申请日：1985-12-27

Applicant: TOSHIBA CORP ,  KIZAI KK

Inventor： KOIKE NORIO ,  TSUKAGOSHI HATSUO ,  ONO HIROZO ,  FUNADA KIYOTAKA

IPC: H01J9/227

Abstract: PURPOSE:To prevent a pin hole form occurring in a coat, by separating and removing the nonradiative photoabsorbing material coated on a photoresist coat and on top of this with an aqueous solution making nitric acid and ammonium salt both a main component, at the time of forming the photoabsorbing coat. CONSTITUTION:A photoresist coat 11 constituting a pattern 14 of the photoresist formed by means of an ordinary process and nonradiative photoabsorbing mate rial 15 both separated and removed, and furthermore they are washed by water, making them into a photo-absorbing coat 16 having the required pattern. As for a remover, a mixed solution of nitric acid and inorganic ammonium or an aqueous solution added with one or more than two kinds of acid selected out of nitric acid, hydrochloric acid, hypochlorous acid, peroxisulfuric acid, boric acid, benzen sulfonic acid, sulfanilic acid and carboxylic acid is used. In this connection, as for the inorganic ammonium, any of halogenation ammo nium such as ammonium sulfate, ammonium phophate, or the like,ammonium carbonate and ammonium of boric acid will do for use.

公开(公告)号：JPS62110240A

公开(公告)日：1987-05-21

申请号：JP8422486

申请日：1986-04-14

Applicant: TOSHIBA CORP

Inventor： KOIKE NORIO ,  MATSUDA SHUZO ,  TOKITA KIYOSHI ,  KIDA KINJI

IPC: H01J9/14 ,  H01J29/07

Abstract: PURPOSE:To aim at improvement in a residual emission rate, by installing a process which applies suspension inclusive of a metallic alkoxide compound on the surface of a shadow, mask, and also another process which performs heat treatment for the shadow mask. CONSTITUTION:Suspension of an alkoxide compound consisting of silicon containing zircon and zirconia is applied to one side of main surfaces having a through hole 7a of a shadow mask 7, for example, to a main surface coming to a concave surface at the side of an electron gun 6 when being set up oppositely proximate to a screen 4, and it is heated in an atmosphere of more than 70 deg.C in temperature whereby a layer 13 is formed up. The alkoxide compound of silicon and zirconia applied to the shadow mask 12 caused hydrolysis due to moisture or the like in the atmosphere in an ambience of more than 70 deg.C in temperature, and in consequence, there is produced a film due to a condensation polymerization reaction between alkoxide themselves, thereby forming a mixture layer of amorphous silicon containing zircon, a metallic oxide of zirconia and metal hydroxide.

公开(公告)号：JPS61183847A

公开(公告)日：1986-08-16

申请号：JP2361885

申请日：1985-02-12

Applicant: TOSHIBA CORP

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

IPC: H01J29/28

Abstract: PURPOSE:To achieve improved adhesion so as to increase the emission life characteristic of a cathode-ray tube by using a material containing both a heat-ray-absorbing matter and organic ammonium to form a heat-ray-absorbing layer on the surface of a metal back layer located on a phosphor layer. CONSTITUTION:First, the inner surface of a panel 1 is coated with a phosphor layer 2 which consists of red, green and blue phosphor stripes 21 and black stripes 22 located between the stripes 21. Next, the surface of the phosphor layer 2 is coated with a metal back layer 31 and a heat-ray-absorbing layer 32 in that order, thereby making a color cathode-ray tube. The heat-ray- absorbing layer 32 is formed on the metal back layer 31 by heating the layer 31 and then spraying over it a solution which is prepared by adding an amount (corresponding to at least 0.5wt% of the solid component of the heat-ray- absorbing layer 32) of an aqueous solution of an organic ammonium silicate such as SiO2-choline to a liquid suspension of a heat-ray-absorbing matter such as graphite. As a result, improved adhesion is achieved and the separation of particles is prevented, thereby increasing the withstand voltage and the emission life characteristics of the cathode-ray tube.

公开(公告)号：JPS61148753A

公开(公告)日：1986-07-07

申请号：JP27068984

申请日：1984-12-24

Applicant: TOSHIBA CORP

Inventor： KOIKE NORIO ,  TAKENAKA SHIGEO ,  ITO TAKEO

IPC: H01J29/28 ,  H01J29/88

Abstract: PURPOSE:To prevent a drop of contrast in case of reverse display by applying low electron scattering-featured material on the surface except an image- displayed region on a fluorescent surface screen, out of metal packing layers in a monochrome cathode ray tube. CONSTITUTION:A neck part 1 including an electron gun 4, funnel part 2, front panel part 3, fluorescent screen 5, metal packing layer 6 formed by spattering aluminium on the inner side surface of the screen 5 and panel part 3 and on the inner surface of the funnel part 2, and aluminium film 6a are provided. On the surface of metal-film layers 6 and 6a, except an image-displayed region a, aqueous solution of graphite 8, in which amorphous silica of low electron scattering-featured material is added to form a monochrome cathode-ray tube. Hence, with the influence of scattering reflection electrons being lessened, an image with good contrast can be obtained even in case of a reverse display system.