GB1431758A - Visual display devices - Google Patents

Visual display devices

Info

Publication number
GB1431758A
GB1431758A GB2892372A GB2892372A GB1431758A GB 1431758 A GB1431758 A GB 1431758A GB 2892372 A GB2892372 A GB 2892372A GB 2892372 A GB2892372 A GB 2892372A GB 1431758 A GB1431758 A GB 1431758A
Authority
GB
United Kingdom
Prior art keywords
electrodes
pulses
potential
gas
conductors
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
GB2892372A
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.)
Ferranti International PLC
Original Assignee
Ferranti 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 Ferranti PLC filed Critical Ferranti PLC
Priority to GB2892372A priority Critical patent/GB1431758A/en
Priority to US371355A priority patent/US3876906A/en
Publication of GB1431758A publication Critical patent/GB1431758A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/38—Cold-cathode tubes
    • H01J17/48—Cold-cathode tubes with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron
    • H01J17/49—Display panels, e.g. with crossed electrodes, e.g. making use of direct current
    • H01J17/492—Display panels, e.g. with crossed electrodes, e.g. making use of direct current with crossed electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/38—Cold-cathode tubes
    • H01J17/48—Cold-cathode tubes with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron
    • H01J17/49—Display panels, e.g. with crossed electrodes, e.g. making use of direct current

Landscapes

  • Gas-Filled Discharge Tubes (AREA)

Abstract

1431758 Matrix displays FERRANTI Ltd 18 June 1973 [21 June 1972] 28923/72 Heading G5C [Also in Division H1] Display apparatus comprises gas filled cold cathode D.C. devices each with electrodes 4, 3 in contact with the gas, an impedance 5 connected to electrode 4 and another electrode 10 capacitatively coupled by dielectric 26 to the gas space; a first array of conductors 23 connecting rows of impedances; and parallel conductor arrays connecting columns of electrodes 3 and 10 respectively. As shown the electrodes 3, 10 are formed by portions of conductors of their arrays. The gas spaces are formed by apertures 21 in plate 20 sealed by top and bottom plates 26, 24. The dielectric of plates 26 is reduced in thickness adjacent each cell. The cells are filled with Ne and tritium. In operation a sustain potential V m is applied to electrodes 3. Initially pulses exceeding the write potential are applied to selected electrodes 3 and 4. With electrodes 10 earthed, discharges are initiated and the capacitors are charged to V m on the reduced thickness insulation 8. The discharges are maintained by the potential on electrodes 3 and can be erased by pulses on electrodes 4 and restarted by pulses on electrodes 10 which add to the wall storage at 8. By applying alternately on and off pulses and by varying the time between them large variation in contrast can be obtained. The wall charge can be removed by gradually increasing the potential on electrodes 10 and applying pulses to electrodes 3.
GB2892372A 1972-06-21 1972-06-21 Visual display devices Expired GB1431758A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2892372A GB1431758A (en) 1972-06-21 1972-06-21 Visual display devices
US371355A US3876906A (en) 1972-06-21 1973-06-19 Visual display devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2892372A GB1431758A (en) 1972-06-21 1972-06-21 Visual display devices

Publications (1)

Publication Number Publication Date
GB1431758A true GB1431758A (en) 1976-04-14

Family

ID=10283393

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2892372A Expired GB1431758A (en) 1972-06-21 1972-06-21 Visual display devices

Country Status (2)

Country Link
US (1) US3876906A (en)
GB (1) GB1431758A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0127432B2 (en) * 1975-01-24 1989-05-29 Hitachi Ltd
JPS5238824A (en) * 1975-09-22 1977-03-25 Hitachi Ltd Memory panel driving system
US4097780A (en) * 1976-08-17 1978-06-27 Bell Telephone Laboratories, Incorporated Method and apparatus for energizing the cells of a plasma display panel to selected brightness levels
US4147959A (en) * 1977-05-25 1979-04-03 Beckman Instruments, Inc. Display section for multilayer gas-discharge display panel
JPS5772487U (en) * 1980-10-20 1982-05-04
EP0790597B1 (en) * 1996-02-15 2004-01-28 Matsushita Electric Industrial Co., Ltd. A plasma-display panel of high luminosity and high efficiency and a driving method of such a plasma-display panel
US6452332B1 (en) 1999-04-26 2002-09-17 Chad Byron Moore Fiber-based plasma addressed liquid crystal display
US6414433B1 (en) * 1999-04-26 2002-07-02 Chad Byron Moore Plasma displays containing fibers
US6354899B1 (en) 1999-04-26 2002-03-12 Chad Byron Moore Frit-sealing process used in making displays
US6431935B1 (en) 1999-04-26 2002-08-13 Chad Byron Moore Lost glass process used in making display

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3509408A (en) * 1967-12-13 1970-04-28 Burroughs Corp Display panel with separate signal and sustainer electrodes
GB1252838A (en) * 1969-08-28 1971-11-10
US3636405A (en) * 1969-10-01 1972-01-18 Itek Corp Split electrode gas cell
GB1325260A (en) * 1971-07-22 1973-08-01 Mullard Ltd Glowdischarge display device
US3789265A (en) * 1971-10-04 1974-01-29 Burroughs Corp Display panel
US3790849A (en) * 1972-04-24 1974-02-05 Control Data Corp Capacitive memory gas discharge display device having internal conductors
US3771008A (en) * 1972-11-09 1973-11-06 Bell Telephone Labor Inc Gaseous discharge display device

Also Published As

Publication number Publication date
US3876906A (en) 1975-04-08

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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