GB686465A - Improvements relating to the manufacture of mosaic electrodes such as are utilised in television pick-up tubes - Google Patents

Improvements relating to the manufacture of mosaic electrodes such as are utilised in television pick-up tubes

Info

Publication number
GB686465A
GB686465A GB4617/50A GB461750A GB686465A GB 686465 A GB686465 A GB 686465A GB 4617/50 A GB4617/50 A GB 4617/50A GB 461750 A GB461750 A GB 461750A GB 686465 A GB686465 A GB 686465A
Authority
GB
United Kingdom
Prior art keywords
layer
caesium
mosaic
electrode
oxide
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
GB4617/50A
Inventor
Harry Cassman
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries Ltd
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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB4617/50A priority Critical patent/GB686465A/en
Priority to DEE3340A priority patent/DE862913C/en
Priority to US211013A priority patent/US2745772A/en
Priority to FR1049276D priority patent/FR1049276A/en
Publication of GB686465A publication Critical patent/GB686465A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J29/36—Photoelectric screens; Charge-storage screens
    • H01J29/39—Charge-storage screens
    • H01J29/43—Charge-storage screens using photo-emissive mosaic, e.g. for orthicon, for iconoscope
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/233—Manufacture of photoelectric screens or charge-storage screens
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24917—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including metal layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24926—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including ceramic, glass, porcelain or quartz layer

Abstract

686,465. Electrode materials for television pickup tubes. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Feb. 7, 1951 [Feb. 23, 1950], No. 4617/50. Class 39(i) A mosaic electrode has a layer of a caesium resistant metallic oxide 2 between the support 1 of dielectric material and the photo-sensitive elements 3. A thin substantially transparent layer of magnesium oxide 2 is applied to a glass or mica sheet .001-.004 inch thick, by depositing magnesium metal and subsequently oxidizing it. One or more metals e.g. antimony or bismuth and silver are evaporated through a stencil mesh onto the oxide layer to form elements 3, the stencil is removed and the mosaic exposed to caesium vapour and baked at 140-170‹C until the sensitivity has passed a maximum value. The electrode with its caesium coating 4 is then exposed to oxygen until its definition is at a maximum as indicated by reproduced pictures. The oxides of aluminium, barium and other refractory elements may replace the magnesium oxide. There is a signal layer on the back of,the support.
GB4617/50A 1950-02-23 1950-02-23 Improvements relating to the manufacture of mosaic electrodes such as are utilised in television pick-up tubes Expired GB686465A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB4617/50A GB686465A (en) 1950-02-23 1950-02-23 Improvements relating to the manufacture of mosaic electrodes such as are utilised in television pick-up tubes
DEE3340A DE862913C (en) 1950-02-23 1951-02-15 Process for the production of mosaic electrodes for image decomposition tubes
US211013A US2745772A (en) 1950-02-23 1951-02-15 Manufacture of mosaic screens such as are utilized in television transmission tubes
FR1049276D FR1049276A (en) 1950-02-23 1951-02-22 Manufacturing process for mosaic screens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4617/50A GB686465A (en) 1950-02-23 1950-02-23 Improvements relating to the manufacture of mosaic electrodes such as are utilised in television pick-up tubes

Publications (1)

Publication Number Publication Date
GB686465A true GB686465A (en) 1953-01-28

Family

ID=9780555

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4617/50A Expired GB686465A (en) 1950-02-23 1950-02-23 Improvements relating to the manufacture of mosaic electrodes such as are utilised in television pick-up tubes

Country Status (4)

Country Link
US (1) US2745772A (en)
DE (1) DE862913C (en)
FR (1) FR1049276A (en)
GB (1) GB686465A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2884541A (en) * 1955-10-10 1959-04-28 Rca Corp Electroluminescent image device
US2957140A (en) * 1957-05-01 1960-10-18 Franklin H Harris Cathode ray signal storage device
GB892504A (en) * 1957-06-26 1962-03-28 Emi Ltd Improvements in or relating to a method of forming a photoemissive surface
US3380156A (en) * 1965-11-15 1968-04-30 Trw Inc Method of fabricating thin film resistors
US3626388A (en) * 1968-04-24 1971-12-07 Matsushita Electric Ind Co Ltd Storage device having an alkali-halide storage surface
US3836393A (en) * 1971-07-14 1974-09-17 Owens Illinois Inc Process for applying stress-balanced coating composite to dielectric surface of gas discharge device
US4470822A (en) * 1983-02-25 1984-09-11 Rca Corporation Method of fabricating a metalized electrode assembly
US5266867A (en) * 1990-10-15 1993-11-30 Matsushita Electronics Corporation Gas discharge tube with tunnel effect type cathode
US6017579A (en) * 1997-04-14 2000-01-25 Symetrix Corporation Method of forming magnesium oxide films on glass substrate for use in plasma display panels

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL52244C (en) * 1937-03-05
US2171224A (en) * 1937-03-30 1939-08-29 Rca Corp Cathode ray tube
US2434930A (en) * 1944-12-01 1948-01-27 Bell Telephone Labor Inc Method and apparatus for ionic discharge coating

Also Published As

Publication number Publication date
FR1049276A (en) 1953-12-29
US2745772A (en) 1956-05-15
DE862913C (en) 1953-01-15

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