Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device
Patent
1977-08-29
1978-12-19
Smith, Alfred E.
Electric lamp and discharge devices: systems
Plural power supplies
Plural cathode and/or anode load device
313193, 313204, H05B 3700, H05B 3900, H05B 4100
Patent
active
041307771
ABSTRACT:
This disclosure sets forth means and method for scanning a high voltage cathodoluminescent television, alpha-numeric or other image display panel having a row and column array of individually controllable plasma-sac-type gas-discharge display elements. The panel envelope contains an ionizable gas at very low pressure, and includes a transparent faceplate on the inner surface of which are disposed cathodoluminescent target elements associated with the display elements. A plasma-sac-generating means includes cathode means and anode means for forming a gas discharge plasma or plasmas, and means for constricting the plasma or plasmas to simultaneously form one or more electron-beam-generating plasma sacs. Control means are provided for controlling the plasma-sac-generating means such that at a given time a plurality of electron beams are generated, each associated with a predetermined display element and target element. Included are means for accelerating the beams from the plasma sac or sacs into high-energy impingement on respectively associated target elements. Scanning means provide for scanning a row of the display elements by activating in sequence and group-by-group consecutive groups of display elements in the row until the entire row of display elements is scanned. Column-scanning is repeated for each selected row until the entire panel has been scanned.
REFERENCES:
patent: 3749969 (1973-07-01), Miyashiro et al.
patent: 3845241 (1974-10-01), Schwartz
patent: 3999094 (1976-12-01), Chodil
A Picture-Display Panel Using a Constricted-Glow Discharge, IEEE Transactions on Electron Devices, vol. ED-21, No. 6, Jun. 1974, by Hori, et al.
Clarke, Jr. Ralph E.
Smith Alfred E.
Wise Robert E.
Zenith Radio Corporation
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