GB825876A - Improvements in or relating to cathode ray tubes - Google Patents

Improvements in or relating to cathode ray tubes

Info

Publication number
GB825876A
GB825876A GB20200/56A GB2020056A GB825876A GB 825876 A GB825876 A GB 825876A GB 20200/56 A GB20200/56 A GB 20200/56A GB 2020056 A GB2020056 A GB 2020056A GB 825876 A GB825876 A GB 825876A
Authority
GB
United Kingdom
Prior art keywords
target
mirrors
plates
tube
deflection
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
GB20200/56A
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.)
Zenith Electronics LLC
Original Assignee
Zenith Radio Corp
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 Zenith Radio Corp filed Critical Zenith Radio Corp
Publication of GB825876A publication Critical patent/GB825876A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • H01J31/123—Flat display tubes
    • H01J31/124—Flat display tubes using electron beam scanning
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/01—Fluorescent lamp circuits with more than two principle electrodes

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

825,876. Cathode-ray tubes. ZENITH RADIO CORPORATION. June 29, 1956 [June 30, 1955], No. 20200/56. Class 39(1). [Also in Groups XXXIX and XL(b)] A "flat" cathode-ray tube, e.g. for use in a television receiver or in a switching circuit, comprises a set of electrostatic mirrors 21 for deflecting the beam A, Fig. 1, successively into a plurality of paths across the target 40. The beam is then deflected into impact with the target by a set of deflection plates 34 or coatings on an insulating base, or by a second set of electrostatic mirrors. Individual cycles of sawtooth scanning voltages are applied to the deflection plates or mirrors (see Group XL(b)). In a colour television tube, Fig. 6, three beams 55R, 55G and 55B are reflected at mirrors 80 to fall on colour strips R, G, B. Mirrors 80 are plates 86 with mesh portions 87, or may consist wholly of mesh. Post-deflection accelerating voltages are applied between a screen 41 and the target 91. The target comprises a conductive film 62 deposited on the phosphors, or the surface of the base 60 may be conductive e.g. by iridizing. In a switching tube the target consists of rows and columns of individual target plates, e.g. 10 x 10. A second electron gun 155, Fig. 8, may be included in the tube to scan extensions or cup-shaped sections 138 formed in the mirror plates 117 to energize them in sequence. The cup-shaped sections may be coated with graphite to reduce secondary electron emission. The mirror electrodes may be channel shaped to reduce the cross-sectional area of the beam.
GB20200/56A 1955-06-30 1956-06-29 Improvements in or relating to cathode ray tubes Expired GB825876A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US519110A US2961575A (en) 1955-06-30 1955-06-30 Electron discharge device

Publications (1)

Publication Number Publication Date
GB825876A true GB825876A (en) 1959-12-23

Family

ID=24066872

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20200/56A Expired GB825876A (en) 1955-06-30 1956-06-29 Improvements in or relating to cathode ray tubes

Country Status (2)

Country Link
US (1) US2961575A (en)
GB (1) GB825876A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4312769A (en) 1979-11-23 1982-01-26 Chattem, Inc. Continuous process for grease preparation

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE559755A (en) * 1956-08-01
GB1241018A (en) * 1968-05-13 1971-07-28 Rank Organisation Ltd Improvements in cathode ray tubes
US4158157A (en) * 1976-10-26 1979-06-12 Zenith Radio Corporation Electron beam cathodoluminescent panel display
GB2164829B (en) * 1984-09-24 1988-01-13 Philips Electronic Associated Deflection circuit for a cathode ray display tube
US5117159A (en) * 1988-11-04 1992-05-26 Matsushita Electric Industrial Co., Ltd. Flat panel type display and method for driving the display

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL42522C (en) * 1934-02-24
US2289319A (en) * 1940-12-31 1942-07-07 Howard M Strobel Orientation high frequency generator
US2416914A (en) * 1943-07-30 1947-03-04 Rca Corp Electron discharge device
US2449339A (en) * 1945-11-13 1948-09-14 Rca Corp Cathode-ray tube
US2449558A (en) * 1945-12-14 1948-09-21 Harold H Lanier Cathode-ray tube
US2642535A (en) * 1946-10-18 1953-06-16 Rca Corp Mass spectrometer
US2623190A (en) * 1950-02-13 1952-12-23 Solo S Roth Color television system
US2795729A (en) * 1952-09-15 1957-06-11 Nat Res Dev Cathode ray tube
US2795731A (en) * 1953-05-19 1957-06-11 Kaiser Aircraft & Electronics Cathode ray tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4312769A (en) 1979-11-23 1982-01-26 Chattem, Inc. Continuous process for grease preparation

Also Published As

Publication number Publication date
US2961575A (en) 1960-11-22

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