GB519042A - Improvements in or relating to cathode ray tubes and to fluorescent screens suitabletherefor - Google Patents

Improvements in or relating to cathode ray tubes and to fluorescent screens suitabletherefor

Info

Publication number
GB519042A
GB519042A GB2670538A GB2670538A GB519042A GB 519042 A GB519042 A GB 519042A GB 2670538 A GB2670538 A GB 2670538A GB 2670538 A GB2670538 A GB 2670538A GB 519042 A GB519042 A GB 519042A
Authority
GB
United Kingdom
Prior art keywords
ray tubes
suitabletherefor
relating
cathode ray
thiosulphate
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
GB2670538A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2670538A priority Critical patent/GB519042A/en
Publication of GB519042A publication Critical patent/GB519042A/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

Abstract

519,042. Luminescent materials. STANDARD TELEPHONES & CABLES, Ltd., and WOLFSON, H. Sept. 13, 1938, No. 26705. [Class 39 (i)] The blackening of fluorescent metal sulphide, especially zinc and cadmium sulphide', screens for cathode-ray tubes, is prevented by the addition of sodium or potassium thiosulphate. An aqueous solution of the thiosulphate may be applied to the glass and dried, the metal sulphide dusted on, and the whole baked at 200‹-450‹C., the thiosulphate acting as a binder.
GB2670538A 1938-09-13 1938-09-13 Improvements in or relating to cathode ray tubes and to fluorescent screens suitabletherefor Expired GB519042A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2670538A GB519042A (en) 1938-09-13 1938-09-13 Improvements in or relating to cathode ray tubes and to fluorescent screens suitabletherefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2670538A GB519042A (en) 1938-09-13 1938-09-13 Improvements in or relating to cathode ray tubes and to fluorescent screens suitabletherefor

Publications (1)

Publication Number Publication Date
GB519042A true GB519042A (en) 1940-03-14

Family

ID=10247927

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2670538A Expired GB519042A (en) 1938-09-13 1938-09-13 Improvements in or relating to cathode ray tubes and to fluorescent screens suitabletherefor

Country Status (1)

Country Link
GB (1) GB519042A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966464A (en) * 1957-10-28 1960-12-27 Sylvania Electric Prod Method of making silver activated sulphide phosphors
US11300935B2 (en) 2014-11-04 2022-04-12 Wago Verwaltungsgesellschaft Mbh Module for a process engineering system and method for controlling a process engineering system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966464A (en) * 1957-10-28 1960-12-27 Sylvania Electric Prod Method of making silver activated sulphide phosphors
US11300935B2 (en) 2014-11-04 2022-04-12 Wago Verwaltungsgesellschaft Mbh Module for a process engineering system and method for controlling a process engineering system

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