ES337777A1 - Cathode ray tube with stainless steel grid sealed into glass envelope - Google Patents

Cathode ray tube with stainless steel grid sealed into glass envelope

Info

Publication number
ES337777A1
ES337777A1 ES337777A ES337777A ES337777A1 ES 337777 A1 ES337777 A1 ES 337777A1 ES 337777 A ES337777 A ES 337777A ES 337777 A ES337777 A ES 337777A ES 337777 A1 ES337777 A1 ES 337777A1
Authority
ES
Spain
Prior art keywords
grid
tube
glass
faceplate
wires
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES337777A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CFT COMP FSE TELEVISION
Compagnie Francaise de Television SA
Original Assignee
CFT COMP FSE TELEVISION
Compagnie Francaise de Television SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CFT COMP FSE TELEVISION, Compagnie Francaise de Television SA filed Critical CFT COMP FSE TELEVISION
Publication of ES337777A1 publication Critical patent/ES337777A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/025—Mounting or supporting arrangements for grids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/28—Luminescent screens with protective, conductive or reflective layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/861—Vessels or containers characterised by the form or the structure thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/20—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours
    • H01J31/201—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours using a colour-selection electrode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/20—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours
    • H01J31/201—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours using a colour-selection electrode
    • H01J31/203—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours using a colour-selection electrode with more than one electron beam

Abstract

In a glass cathode-ray tube formed of two envelope portions hermetically sealed to one another, a grid of stretched metal wires constituting a post-deflection acceleration or focusing grid is mounted in the tube by having the ends of the wires embedded in the seal between the two portions and extending to the outer surface of the envelope, the outer surface of the seal being coated with a layer of electrically conductive material and a superimposed layer of material of a nature which ensures that the seal is airtight. A focusing and post-deflection-acceleration grid in a colour television tube is composed of stretched wires 4 extending through the seal 6 (but only partly shown as such) of ceramized glass cement, the ends of the wires being cut-off flush with the outer surface 4a, and coated first with a layer 7, formed of colloidal silver and ceramizable glass and having an extension 7a to a contact terminal 8 provided on the faceplate portion of the tube, and thereafter with an hermetically sealing layer of ceramizable glass 9, which may itself be covered by a ribbon 10 of glass fibres. The grid wires may be of stainless steel, whereby their tension increases, due to differential contraction with respect to the envelope glass, upon cooling from the sealing temperature. A grid structure mounted as described above increases the implosion resistance of the tube, and permits the use of a plane of reduced thickness e.g. a plane rectangular faceplate having a thickness 1/25th the length of the diagonal, or a plane circular faceplate having a thickness 1/30th the diameter. The three-gun colour tube of Fig. 4, has a focusing grid 13 connected to a further electrode 112, and a plane faceplate 14 with a peripheral groove 110, whereby the luminescent strips 16 on the faceplate may be produced by a contact printing process the screen is coated with superposed layers of aluminium 17 and porous graphite 18.
ES337777A 1966-03-10 1967-03-09 Cathode ray tube with stainless steel grid sealed into glass envelope Expired ES337777A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR52829A FR1506293A (en) 1966-03-10 1966-03-10 Further training in the manufacture of cathode ray tubes
FR91994A FR91726E (en) 1966-03-10 1967-01-20 Further training in the manufacture of cathode ray tubes
FR94650A FR91909E (en) 1966-03-10 1967-02-13 Further training in the manufacture of cathode ray tubes

Publications (1)

Publication Number Publication Date
ES337777A1 true ES337777A1 (en) 1968-03-01

Family

ID=27242980

Family Applications (1)

Application Number Title Priority Date Filing Date
ES337777A Expired ES337777A1 (en) 1966-03-10 1967-03-09 Cathode ray tube with stainless steel grid sealed into glass envelope

Country Status (12)

Country Link
US (1) US3489966A (en)
BE (1) BE695035A (en)
CH (1) CH471462A (en)
DE (1) DE1589577B2 (en)
DK (1) DK123270B (en)
ES (1) ES337777A1 (en)
FR (3) FR1506293A (en)
GB (1) GB1142407A (en)
LU (1) LU53147A1 (en)
NL (1) NL154614B (en)
SE (1) SE325051B (en)
SU (1) SU486519A3 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1566330A (en) * 1968-02-01 1969-05-09
US3837829A (en) * 1969-05-20 1974-09-24 Couleur F Method of manufacture for cathode-ray tubes for color television receivers
US3746904A (en) * 1971-05-07 1973-07-17 Rca Corp Cathode-ray tube including a glass envelope with two spaced external conductive coating and a connecting strip of a third external conductive coating thereon
US4158419A (en) * 1977-12-27 1979-06-19 Rca Corporation Implosion protected CRT
US4295073A (en) * 1978-03-28 1981-10-13 The United States Of America As Represented By The Secretary Of The Army Microchannel plate-in-wall structure
US4638213A (en) * 1980-10-08 1987-01-20 Rca Corporation CRT with internal contact stripe or patch and method of making said stripe or patch
US5030154A (en) * 1983-09-30 1991-07-09 Zenith Electronics Corporation Method of mounting tensed CRT mask
US4721879A (en) * 1983-09-30 1988-01-26 Zenith Electronics Corporation Tensed mask cathode ray tube
US4593224A (en) * 1983-09-30 1986-06-03 Zenith Electronics Corporation Tension mask cathode ray tube
NL8304181A (en) * 1983-12-06 1985-07-01 Philips Nv COLOR IMAGE TUBE.
US4614892A (en) * 1984-08-31 1986-09-30 Zenith Electronics Corporation Tension mask mounting structure
US4593225A (en) * 1984-08-31 1986-06-03 Zenith Electronics Corporation Tension mask colar cathode ray tube
US4712041A (en) * 1985-08-20 1987-12-08 Zenith Electronics Corporation Color CRT tension mask support assembly with a glass frame
US4721488A (en) * 1986-02-21 1988-01-26 Zenith Electronics Corporation Apparatus for tensing a shadow mask foil
US4710670A (en) * 1986-02-21 1987-12-01 Zenith Electronics Corporation Front assembly system for a tension mask color cathode ray tube

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899575A (en) * 1959-08-11 Glass-to-metal seals in cathode-ray tubes
US2864032A (en) * 1954-07-30 1958-12-09 Zenith Radio Corp Method and apparatus for color television
US2813213A (en) * 1954-11-03 1957-11-12 Avco Mfg Corp Color cathode-ray tube and assembly process
US2875363A (en) * 1955-12-12 1959-02-24 Chromatic Television Lab Inc Color-control grid structure for cathode-ray tubes
US3102212A (en) * 1959-04-24 1963-08-27 Motorola Inc Cathode ray tube with low velocity deflection and post deflection beam acceleration
US3271093A (en) * 1960-06-10 1966-09-06 Westinghouse Electric Corp Method for making incandescent lamps
US3260397A (en) * 1961-02-24 1966-07-12 Philips Corp Cathode ray tube and method of making same
NL137799C (en) * 1962-04-18
US3284655A (en) * 1963-06-10 1966-11-08 Hughes Aircraft Co Cathode ray tube mesh assembly supported between envelope sections

Also Published As

Publication number Publication date
FR1506293A (en) 1967-12-22
CH471462A (en) 1969-04-15
LU53147A1 (en) 1968-12-09
NL154614B (en) 1977-09-15
SE325051B (en) 1970-06-22
DE1589577B2 (en) 1977-01-20
DE1589577A1 (en) 1970-04-09
BE695035A (en) 1967-09-06
NL6703723A (en) 1967-09-11
FR91909E (en) 1968-08-30
GB1142407A (en) 1969-02-05
US3489966A (en) 1970-01-13
FR91726E (en) 1968-08-02
DK123270B (en) 1972-05-29
SU486519A3 (en) 1975-09-30

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