GB1340456A - Cathode ray display device - Google Patents

Cathode ray display device

Info

Publication number
GB1340456A
GB1340456A GB578972*[A GB1340456DA GB1340456A GB 1340456 A GB1340456 A GB 1340456A GB 1340456D A GB1340456D A GB 1340456DA GB 1340456 A GB1340456 A GB 1340456A
Authority
GB
United Kingdom
Prior art keywords
cathodes
multiplier
cathode
emission
screen
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
GB578972*[A
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.)
Philips Components Ltd
Original Assignee
Mullard 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 Mullard Ltd filed Critical Mullard Ltd
Publication of GB1340456A publication Critical patent/GB1340456A/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
    • H01J31/50—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output
    • H01J31/506—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output tubes using secondary emission effect
    • H01J31/507—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output tubes using secondary emission effect using a large number of channels, e.g. microchannel plates
    • 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
    • H01J31/125—Flat display tubes provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection
    • H01J31/127—Flat display tubes provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection using large area or array sources, i.e. essentially a source for each pixel group
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2201/00—Electrodes common to discharge tubes
    • H01J2201/34—Photoemissive electrodes
    • H01J2201/342—Cathodes

Abstract

1340456 Cathode ray display tubes MULLARD Ltd 31 Aug 1972 [8 Feb 1972] 5789/72 Heading H1D A display device suitable for alpha-numeric display comprises an array of selectively controlled photo-cathodes the emission from which is amplified by a channel multiplier and fed to a luminescent screen, optical feedback being provided from the screen to the cathodes so that a pattern remains displayed until altered. In the arrangement described the cathodes form a 7 x 5 rectangular array, and each cathode is mounted on a metal substrate provided with an individual input connection and disposed in a shallow cavity in an insulating block. If a photo-cathode is at a potential equal to or more negative than the input surface of the multiplier, its emission (stimulated initially by stray electrons and/or photons) will cause the illumination of a picture point on the screen; if the potential of the cathode is raised 2-5 volts positive its emission is unable to reach the input of the multiplier, and the cathodes may be switched by means of integrated circuits. A cross-bar addressing system may be used if the channels in the multiplier are connected together in rows whilst the cathodes are connected together in columns. A colour display may be provided by using discrete phosphors of different colours for the luminescent screen.
GB578972*[A 1972-02-08 1972-08-31 Cathode ray display device Expired GB1340456A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB578972 1972-02-08

Publications (1)

Publication Number Publication Date
GB1340456A true GB1340456A (en) 1973-12-12

Family

ID=9802662

Family Applications (1)

Application Number Title Priority Date Filing Date
GB578972*[A Expired GB1340456A (en) 1972-02-08 1972-08-31 Cathode ray display device

Country Status (5)

Country Link
US (1) US3825922A (en)
JP (1) JPS4893259A (en)
DE (1) DE2257234A1 (en)
FR (1) FR2171212A1 (en)
GB (1) GB1340456A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131225A (en) * 1982-11-18 1984-06-13 Secr Defence Flood gun crt information display device

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1406131A (en) * 1973-05-23 1975-09-17 Meiling J Production of wax patterns
US4029984A (en) * 1975-11-28 1977-06-14 Rca Corporation Fluorescent discharge cold cathode for an image display device
US4034255A (en) * 1975-11-28 1977-07-05 Rca Corporation Vane structure for a flat image display device
GB1528679A (en) * 1975-12-10 1978-10-18 Bosch Gmbh Robert Image converter or intensifier device
US4031552A (en) * 1976-03-05 1977-06-21 The United States Of America As Represented By The Secretary Of The Army Miniature flat panel photocathode and microchannel plate picture element array image intensifier tube
US4051468A (en) * 1976-07-28 1977-09-27 Rca Corporation Apparatus and method for modulating a flat panel display device
US4142123A (en) * 1977-02-10 1979-02-27 Rca Corporation Image display device with optical feedback to cathode
US4156827A (en) * 1978-06-19 1979-05-29 The United States Of America As Represented By The Secretary Of The Army Matrix cathode channel image device
US4280125A (en) * 1979-07-27 1981-07-21 Xerox Corporation Thin vacuum panel display device
SE425822B (en) * 1981-04-02 1982-11-08 Asea Ab DEVICE FOR CONVERTING INFORMATION IN ELECTRICAL FORM TO OPTICAL FORM AND / OR VICE VERSA
US4531122A (en) * 1982-07-14 1985-07-23 Redfield Lawrence J Flatscreen
US4636629A (en) * 1985-04-02 1987-01-13 Galileo Electro-Optics Corp. Image-storage microchannel device with gating means for selective ion feedback
GB2180394A (en) * 1985-09-11 1987-03-25 Philips Electronic Associated Cathode ray display tubes
US4948965A (en) * 1989-02-13 1990-08-14 Galileo Electro-Optics Corporation Conductively cooled microchannel plates
FR2698201B1 (en) * 1992-11-13 1994-12-16 Commissariat Energie Atomique Multiplex type matrix display screen and its control method.
HUP0104625A2 (en) * 2001-10-31 2003-06-28 Zoltán Németh Combined electronical and optical addressing, display and camera with such addressing

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3132325A (en) * 1959-09-24 1964-05-05 Gen Electric Electro-optical shift register
US3408532A (en) * 1965-12-06 1968-10-29 Northrop Corp Electron beam scanning device
US3723977A (en) * 1969-12-08 1973-03-27 Owens Illinois Inc Gas discharge panel with photoconductive material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131225A (en) * 1982-11-18 1984-06-13 Secr Defence Flood gun crt information display device

Also Published As

Publication number Publication date
US3825922A (en) 1974-07-23
JPS4893259A (en) 1973-12-03
DE2257234A1 (en) 1973-08-23
FR2171212A1 (en) 1973-09-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee