WO2001041176A3 - Virtual cathode having a segmented backing electrode - Google Patents

Virtual cathode having a segmented backing electrode Download PDF

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Publication number
WO2001041176A3
WO2001041176A3 PCT/US2000/042096 US0042096W WO0141176A3 WO 2001041176 A3 WO2001041176 A3 WO 2001041176A3 US 0042096 W US0042096 W US 0042096W WO 0141176 A3 WO0141176 A3 WO 0141176A3
Authority
WO
WIPO (PCT)
Prior art keywords
virtual cathode
segmented
backing electrode
accelerator
face plate
Prior art date
Application number
PCT/US2000/042096
Other languages
French (fr)
Other versions
WO2001041176A2 (en
Inventor
Frederick G Oess
Original Assignee
Mesa Vision 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 Mesa Vision Inc filed Critical Mesa Vision Inc
Priority to AU47072/01A priority Critical patent/AU4707201A/en
Publication of WO2001041176A2 publication Critical patent/WO2001041176A2/en
Publication of WO2001041176A3 publication Critical patent/WO2001041176A3/en

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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
    • H01J31/125—Flat display tubes provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection
    • H01J31/126—Flat display tubes provided with control means permitting the electron beam to reach selected parts of the screen, e.g. digital selection using line sources

Abstract

A display device comprises a face plate assembly (14), a segmented cathode subsystem having a segmented backing electrode (19) and an emitter array (20), an accelerator (52), and first and second grid elements (42,44). The face plate assembly has an electrically positive receptor (16) that causes an image to be displayed as a result of electron impingement thereon. Active segments of the segmented backing electrode and the emitter array establishing a uniform space-charge cloud of free electrons functioning as a proximity virtual cathode. The segmented backing electrode has segments and a controller to activate the segments individually. The accelerator located a first distance from the electron emitter array creating at least one virtual cathode remotely located a second distance from the accelerator. The first and second grid elements are located between the face plate assembly and the at least one remotely located virtual cathode to select electrons from the remotely located virtual cathode to impinge the electrically positive receptor.
PCT/US2000/042096 1999-11-15 2000-11-10 Virtual cathode having a segmented backing electrode WO2001041176A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU47072/01A AU4707201A (en) 1999-11-15 2000-11-10 Segmented virtual cathode

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US44022099A 1999-11-15 1999-11-15
US09/440,220 1999-11-15

Publications (2)

Publication Number Publication Date
WO2001041176A2 WO2001041176A2 (en) 2001-06-07
WO2001041176A3 true WO2001041176A3 (en) 2002-02-21

Family

ID=23747922

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/042096 WO2001041176A2 (en) 1999-11-15 2000-11-10 Virtual cathode having a segmented backing electrode

Country Status (2)

Country Link
AU (1) AU4707201A (en)
WO (1) WO2001041176A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003233138A1 (en) * 2002-07-09 2004-01-23 Koninklijke Philips Electronics N.V. Matrix display device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672272A (en) * 1982-11-10 1987-06-09 Siemens Aktiengesellschaft Flat picture reproduction device
US4719388A (en) * 1985-08-13 1988-01-12 Source Technology Corporation Flat electron control device utilizing a uniform space-charge cloud of free electrons as a virtual cathode
US5939842A (en) * 1997-02-24 1999-08-17 International Business Machines Corporation Self stabilizing electron source for flat panel CRT displays
US6194838B1 (en) * 1997-02-24 2001-02-27 International Business Machines Corporation Self stabilizing non-thermionic source for flat panel CRT displays
US6208091B1 (en) * 1996-01-06 2001-03-27 International Business Machines Corporation Current sensing in vacuum electron devices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672272A (en) * 1982-11-10 1987-06-09 Siemens Aktiengesellschaft Flat picture reproduction device
US4719388A (en) * 1985-08-13 1988-01-12 Source Technology Corporation Flat electron control device utilizing a uniform space-charge cloud of free electrons as a virtual cathode
US6208091B1 (en) * 1996-01-06 2001-03-27 International Business Machines Corporation Current sensing in vacuum electron devices
US5939842A (en) * 1997-02-24 1999-08-17 International Business Machines Corporation Self stabilizing electron source for flat panel CRT displays
US6194838B1 (en) * 1997-02-24 2001-02-27 International Business Machines Corporation Self stabilizing non-thermionic source for flat panel CRT displays

Also Published As

Publication number Publication date
AU4707201A (en) 2001-06-12
WO2001041176A2 (en) 2001-06-07

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