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公开(公告)号：JP2002093322A
公开(公告)日：2002-03-29
申请号：JP2000279145
申请日：2000-09-14
Applicant: SONY CORP
Inventor： HASHIMOTO MITSUO , OKADA MASAMICHI , MITOKU MASATAKA , ASAKI TAMAO
Abstract: PROBLEM TO BE SOLVED: To provide a cathode ray tube which is light in weight and an improved in damage resistant property by constructing a part or whole part of a funnel with metallic material, capable of manufacturing by utilizing ordinary manufacturing equipment to the utmost, and to provide several joining members suitable for joining a glass part and the metal part of the cathode ray tube. SOLUTION: For the cathode ray tube with an envelope composed of a glass panel 1 and a funnel 2, constructing a part or whole part of a funnel with metallic material, a joining member 4 of which, one surface is made to have a metal surface which can be welded to the metallic part, and another surface is made to have a glass joining surface which can be joined with the glass part, is interposed between the metal part of the funnel 2 and the glass part of the envelope, and the metal part of the funnel 2 and the glass part are joined by the joining member 4.
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公开(公告)号：JPH09199019A
公开(公告)日：1997-07-31
申请号：JP2578696
申请日：1996-01-19
Applicant: SONY CORP
Inventor： MITOKU MASATAKA
Abstract: PROBLEM TO BE SOLVED: To reduce a cost of manufacture while maintaining assembly accuracy of an electron gun for a cathode-ray tube. SOLUTION: A cathode emitting an electron beam and a plurality of grids including first/second grids are mutually position aligned, to be assembled into an electron gun for a cathode-ray tube. Consequently, first, a first support member 1 fixing the first grid, second support member 2 fixing a spacer specifying a space of the second grid relating to this first grid and a third support member 3 fixing the cathode are mutually integrally formed by an insulator 5 through relatively rough position alignment, a base unit part 4 is prepared. Thereafter, relating to the first support member 1 of the base unit part 4, the first grid 6 is mounted. Relating to the second support member 2 of the base unit part 4, in a condition performing accurate position alignment to the first grid 6, a spacer 8 is mounted. Lastly, with regard to the third support member 3 of the base unit part, the cathode 12 is mounted in a condition performing accurate position alignment to the first grid 6.
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公开(公告)号：JPH05198250A
公开(公告)日：1993-08-06
申请号：JP696992
申请日：1992-01-18
Applicant: SONY CORP
Inventor： ONO HIROSHI , MITOKU MASATAKA
Abstract: PURPOSE:To improve the focusing characteristics of electron a phosphor screen by reducing an effect due to the spherical aberration of a lens formed between a cathode and the first grid. CONSTITUTION:In the cathode 1A where a heater 14 is built into a cathode body structure 13 comprising a sleeve 11 and a sleeve cap 12, and a pulverized electron emission material 2A is formed through coating or spraying onto the surface of the sleeve cap 12, a cap 16 having an opening 15 is weld fixed to the cathode body structure 13 in such a way as applied from the side where the material 2A is formed. In this case, the opening 15 of the cap 16 is made to have a smaller diameter d0 than the electron beam transmission hole of the first grid. Thereafter, the electron emission material 2A is formed on the whole surface of the cap 16 via a coating or spraying process, thereby being buried in the opening 15. Then, the material 2A formed on the surface of the cap 16 other than the opening 15 is removed.
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公开(公告)号：JPH05166459A
公开(公告)日：1993-07-02
申请号：JP35197991
申请日：1991-12-13
Applicant: SONY CORP
Inventor： MITOKU MASATAKA , KARASAWA JOJI , IMABAYASHI HIROTOMO , KURAMOTO FUMIO
IPC: H01J9/18
Abstract: PURPOSE:To fit an electron gun of excellent characteristic by decreasing improper landing and cut off voltage dispersion or the like. CONSTITUTION:The third, fourth and fifth grids 11 to 13 of constituting a main lens system are performed with beading with pins 11a to 13a as a contact. However in a prefocus system, beading of only a pin 15a for the second grid 15 is performed as a contact. The first grid 17 and the second grid 15 or the like are built separately from the main lens system. Thereafter, the prefocus system is welded to the pin 15a and integrally formed with the main lens system. Accordingly, since beading of the prefocus system is not performed, a pressure at the time of beading is not applied to each part of the prefocus system, and these parts can be prevented from being deformed.
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公开(公告)号：JP2002190259A
公开(公告)日：2002-07-05
申请号：JP2001152727
申请日：2001-05-22
Applicant: SONY CORP
Inventor： ENDO NORIHIKO , OUCHI YOSHIHIRO , ASAKI TAMAO , MITOKU MASATAKA
Abstract: PROBLEM TO BE SOLVED: To provide an electron gun for a cathode ray tube which can form a small spot size for a plural beam electron gun and has no deviation in paths of electron beams even for changes in driving voltages, and realizes a highly precise cathode-ray tube which enables to obtain good picture, and to provide a cathode-ray tube having the electron gun. SOLUTION: Plural electron beams SB1 and SB2 are emitted to phosphors having the same color of the cathode-ray tube. A prestage lens PL and a main lens ML have apertures through which the electron beams SB1 and SB2 pass. Paths of the electron beams SB1 and SB2 cross each other in a region between the prestage lens PL and the main lens ML.
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Patent Agency Ranking
公开(公告)号：JP2001294442A
公开(公告)日：2001-10-23
申请号：JP2000247443
申请日：2000-08-17
Inventor： MITOKU MASATAKA , KURAMOTO FUMIO , OKADA MASAMICHI , HACHITANI YOICHI , WATANABE ITARU
Abstract: PROBLEM TO BE SOLVED: To make the whole of a cathode-ray tube CRT lightweight without deteriorating pressure withstanding strength of a glass panel and the characteristic suitable for the CRT of a glass panel. SOLUTION: This glass panel for the CRT is obtained by chemically strengthening the glass containing 57-64 wt.% SiO2 0.1-4 wt.% Al2O3 5-10 wt.% Na2O, 5-10 wt.% K2O, 7-13 wt.% SrO, 7-11 wt.% BaO, 0.1-2 wt.% TiO2 0.1-4 wt.% ZrO2 and 0.01-1 wt.% CeO2.
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公开(公告)号：JPH09199048A
公开(公告)日：1997-07-31
申请号：JP2578796
申请日：1996-01-19
Applicant: SONY CORP
Inventor： MITOKU MASATAKA , NAKAHIRA TADAKATSU
IPC: H01J29/50
Abstract: PROBLEM TO BE SOLVED: To improve position accuracy of an emission hole by improving a mounting structure of a plurality of grid electrodes included in a prefocus system of an electron gun for a color cathode-ray tube. SOLUTION: Each of a first/second grid electrode G1, G2 and additional grid electrode GM, included in a prefocus system, is divided into three parts, and mutually independent three cathode/prefocus compound units 5 are provided to be integrally assembled in a corresponding cathode 1. A mounting component including a connection member 12 is used, and the three cathode/prefocus compound units 5 are mounted by a prescribed tilt angle to be matched with an out-going angle of each electron beam.
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公开(公告)号：JPH0714507A
公开(公告)日：1995-01-17
申请号：JP17370093
申请日：1993-06-21
Applicant: SONY CORP
Inventor： MITOKU MASATAKA , KARASAWA JOJI , IMABAYASHI HIROTOMO
IPC: H01J9/18
Abstract: PURPOSE:To manufacture an electron gun cathode structure capable of specifying the distance between a first grid and a second grid more accurately, with no dispersion. CONSTITUTION:For manufacturing an electron gun cathode structure, a member 21 provided with the first and second faces 21b, 21c having the step between the first and second faces 21b, 21c equal to a distance d12 is prepared. The first grid 16 is mounted on the first face 21b, then a spacer 15 is mounted on the second face 21c. An insulator 17 is mounted on the first grid 16 and the spacer 15. The first grid 16 and the spacer 15 are fixed to the plane l7a of the insulator 17 while the insulator 17 is pressed to the member 21 side. The face 15a of the spacer 15 on the opposite side to the face fixed to the insulator 17 is polished so that the distance d12 becomes the desired value.
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公开(公告)号：JPH02205302A
公开(公告)日：1990-08-15
申请号：JP2556889
申请日：1989-02-03
Applicant: SONY CORP
Inventor： MITOKU MASATAKA , IKEDA SANJI , ENDO NOBUYUKI
Abstract: PURPOSE:To increase the thickness of an insulating layer formed to the periphery, and to improve dielectric strength by bringing a rate occupied by an aggregate in the raw materials of a ceramic resistor to 57wt.% or more. CONSTITUTION:With a discharge inhibit resistor 5, Al, etc., are flame-sprayed at both end sections of a ceramic resistor 10 composed of the integral structure of a resistance layer 11 and an insulating layer 12 and conductive sections 13 are shaped, and electrode caps 14 consisting of a conductive metallic material such as stainless are fitted and disposed to the conductive sections 13. The ceramic resistor 10 is manufactured in such a manner that an aggregate, a conductive material, a binding material and a sintering assisting material are mixed, and pressure-molded in a columnar shape and baked. The rate of the aggregate mainly comprising Al2O3 particularly in raw materials is brought to 57wt.% or more. Accordingly, the thickness of the insulating layer can be increased, and dielectric strength can be improved.
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公开(公告)号：JP2001307634A
公开(公告)日：2001-11-02
申请号：JP2000122010
申请日：2000-04-24
Applicant: SONY CORP
Inventor： MITOKU MASATAKA , KONDO TAKAHARU , OKADA MASAMICHI
Abstract: PROBLEM TO BE SOLVED: To provide a method for surely removing unnecessary gas of a cathode-ray tube in a short time and lower a temperature of the following exhaust process. SOLUTION: The first process (S101-S105) in which a panel glass with a phosphor formed is thermally treated to burn unnecessary materials, and the second process (S106-S109) in which a panel glass and a funnel glass are bound by a binding agent into a tubular structure where through circulating a non-active gas into it, the panel glass and the funnel glass are thermally treated to make them sealed and connected, are provided.
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