GB1194357A - A Cathode Ray Tube having improved Life. - Google Patents

A Cathode Ray Tube having improved Life.

Info

Publication number
GB1194357A
GB1194357A GB52388/67A GB5238867A GB1194357A GB 1194357 A GB1194357 A GB 1194357A GB 52388/67 A GB52388/67 A GB 52388/67A GB 5238867 A GB5238867 A GB 5238867A GB 1194357 A GB1194357 A GB 1194357A
Authority
GB
United Kingdom
Prior art keywords
tube
gas
released
metallic member
getter
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
GB52388/67A
Inventor
David Benda
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.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products Inc
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 Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Publication of GB1194357A publication Critical patent/GB1194357A/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
    • H01J29/94—Selection of substances for gas fillings; Means for obtaining or maintaining the desired pressure within the tube, e.g. by gettering
    • 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
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H01J9/395—Filling vessels

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

1,194,357. Cathode-ray tubes. SYLVANIA ELECTRIC PRODUCTS Inc. 17 Nov., 1967 [17 Nov., 1966], No. 52388/67. Heading H1D. In a cathode-ray tube having an apertured metallic member such as the shadow-mask in a colour tube, the metallic member contains an occluded gas such as hydrogen or nitrogen which is continually released in operation of the tube under electron bombardment to maintain a partial pressure, e.g. 10<SP>-8</SP> torr, of the gas not more than one magnitude below the total pressure, e.g. 10<SP>-7</SP> torr. This is in order to maintain optimum electron emission and to improve tube life. The gas may be introduced from an external source before sealing of the tube or released from e.g. zirconium or titanium hydride contained within a ring structure also containing getter material, e.g. BaA1. The hydrogen is released first so that subsequent evaporation of the getter at a higher temperature secures a more uniform deposition of the getter on the metallic member and on adjacent parts of the envelope wall. Argon is usually present contributing to the total gas pressure.
GB52388/67A 1966-11-17 1967-11-17 A Cathode Ray Tube having improved Life. Expired GB1194357A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US59510466A 1966-11-17 1966-11-17

Publications (1)

Publication Number Publication Date
GB1194357A true GB1194357A (en) 1970-06-10

Family

ID=24381746

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52388/67A Expired GB1194357A (en) 1966-11-17 1967-11-17 A Cathode Ray Tube having improved Life.

Country Status (2)

Country Link
US (1) US3432712A (en)
GB (1) GB1194357A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431939A (en) * 1981-07-28 1984-02-14 Rca Corporation Structure and method for eliminating blocked apertures caused by charged particles

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3658401A (en) * 1970-01-06 1972-04-25 Rca Corp Method of manufacture of cathode ray tubes having frit-sealed envelope assemblies
US3792300A (en) * 1972-07-15 1974-02-12 Gte Sylvania Inc Cathode ray tube having a conductive metallic coating therein
US5202606A (en) * 1989-06-23 1993-04-13 U.S. Philips Corporation Cathode-ray tube with focussing structure and getter means
KR960002929B1 (en) * 1993-07-24 1996-02-28 엘지전자주식회사 Crt getter device
FR2747839B1 (en) * 1996-04-18 1998-07-03 Pixtech Sa FLAT VISUALIZATION SCREEN WITH HYDROGEN SOURCE
JP3745844B2 (en) * 1996-10-14 2006-02-15 浜松ホトニクス株式会社 Electron tube

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2528547A (en) * 1945-08-03 1950-11-07 Gerard J Reilly Hydrogen thyratron
US2572881A (en) * 1946-04-22 1951-10-30 Rothstein Jerome Thyratron cathode design to prevent cleanup of hydrogen
US2640952A (en) * 1947-02-05 1953-06-02 Rca Corp Hydrogen pressure control for hydrogen filled discharge tubes
BE510847A (en) * 1951-04-23
US2886730A (en) * 1957-02-25 1959-05-12 Corning Glass Works Aperture mask coating to prevent cathode poisoning
US3138734A (en) * 1960-07-01 1964-06-23 Corning Glass Works Prevention of cathode poisoning in an electron tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431939A (en) * 1981-07-28 1984-02-14 Rca Corporation Structure and method for eliminating blocked apertures caused by charged particles

Also Published As

Publication number Publication date
US3432712A (en) 1969-03-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees