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GB614947A - Improvements in or relating to image-producing screens for cathode-ray tubes - Google Patents

Improvements in or relating to image-producing screens for cathode-ray tubes

Info

Publication number
GB614947A
GB614947A GB1667346A GB1667346A GB614947A GB 614947 A GB614947 A GB 614947A GB 1667346 A GB1667346 A GB 1667346A GB 1667346 A GB1667346 A GB 1667346A GB 614947 A GB614947 A GB 614947A
Authority
GB
United Kingdom
Prior art keywords
cathode
ethyl cellulose
screen
ray tubes
water
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
GB1667346A
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.)
Heraeus Noblelight Analytics Ltd
Original Assignee
Cathodeon 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 Cathodeon Ltd filed Critical Cathodeon Ltd
Priority to GB1667346A priority Critical patent/GB614947A/en
Publication of GB614947A publication Critical patent/GB614947A/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
    • H01J29/18—Luminescent screens
    • H01J29/28—Luminescent screens with protective, conductive or reflective layers

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

614,947. Cathode-ray tubes. GOFF, G. B. F., and CATHODEON, Ltd. May 31, 1946, No. 16673. [Class 39 (i)] A fluorescent cathode-ray tube screen is covered with a thin film of ethyl cellulose by flooding the screen with a layer of water or other liquid, and floating on to it a solution of ethyl cellulose, which may contain a plasticiser of the alkyl phthalate type. On the solvent evaporating, a continuous coating of ethyl cellulose is left over the water surface. The water is then run out by tilting the containing bulb, leaving the ethyl cellulose film in close contact with the screen. On this film, after drying, is deposited a thin film of conducting material, e.g. aluminium, beryllium or magnesium. Specification 558,323 is referred to.
GB1667346A 1946-05-31 1946-05-31 Improvements in or relating to image-producing screens for cathode-ray tubes Expired GB614947A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1667346A GB614947A (en) 1946-05-31 1946-05-31 Improvements in or relating to image-producing screens for cathode-ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1667346A GB614947A (en) 1946-05-31 1946-05-31 Improvements in or relating to image-producing screens for cathode-ray tubes

Publications (1)

Publication Number Publication Date
GB614947A true GB614947A (en) 1948-12-30

Family

ID=10081559

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1667346A Expired GB614947A (en) 1946-05-31 1946-05-31 Improvements in or relating to image-producing screens for cathode-ray tubes

Country Status (1)

Country Link
GB (1) GB614947A (en)

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