Abstract In a plane multi-digit type electric discharge device of the class comprising an insulator substrate, a plurality of pattern display units arranged in side-by-side relationship on the insulator substrate, each display unit including a plurality of segment electrodes which are arranged in a predetermined pattern, a plurality of electrically isolated counter electrodes respectively confronting the pattern display units, an upper substrate, at least the portions thereof confronting the pattern display units being transparent, and a common envelope containing above described component elements, there are provided a discharge sustaining electrode near the pattern display unit at the end from which scanning is to be commenced and a counter electrode confronting the discharge sustaining electrode thereby constantly sustaining an electric discharge between the discharge sustaining electrode and the last mentioned counter electrode. Further a coating of a radioactive substance is located near the discharge sustaining electrode for supplying thereto a sufficient quantity of electrons for initiating a discharge.
A plane scanning multi-digit type electric discharge display device comprising an insuLator substrate, a plurality of pattern display units arranged side-by-side relationship on said insulator substrate, each display unit including a plurality of segment electrodes which are arranged in a predetermined pattern, a plurality of electrically isolated counter electrodes respectively confronting said pattern display units, and an upper substrate, at least the portions of said counter electrodes and said upper substrate confronting said pattern display units being transparent, and a common envelope containing pattern display units, and a single discharge sustaining electrode adapted for constantly discharging and located near an end pattern display unit at the end from which scanning is to be commenced.
Claim 2
Dependent Claim
114 words
A plane scanning multi-digit type electric discharge display device comprising an insuLator substrate, a plurality of pattern display units arranged side-by-side relationship on said insulator substrate, each display unit including a plurality of segment electrodes which are arranged in a predetermined pattern, a plurality of electrically isolated counter electrodes respectively confronting said pattern display units, and an upper substrate, at least the portions of said counter electrodes and said upper substrate confronting said pattern display units being transparent, and a common envelope containing pattern display units, and a single discharge sustaining electrode adapted for constantly discharging and located near an end pattern display unit at the end from which scanning is to be commenced.
Claim 3
Dependent Claim
35 words
The plane multi-digit type electric discharge display apparatus as claimed in claim 1 wherein a radioactive substance is provided near said discharge sustaining electrode thereby preventing the delay of discharge at the commencement of discharge.
Claim 4
Dependent Claim
45 words
The plane multi-digit type electric discharge display apparatus as claimed in claim 1 wherein a spacer is interposed between said insulator substrate and said counter electrodes, said spacer being provided with windows at portions corresponding to said pattern display units and said discharge sustaining electrode.
Claim 5
Dependent Claim
24 words
The plane multi-digit type electric discharge display device as claimed in claim 1 wherein said discharge sustaining electrode is mounted upon said insulator substrate.
Claim 6
Dependent Claim
21 words
The plane multi-digit type electric discharge display device as claimed in claim 1 wherein said counter electrodes comprise metal wire nets.
Claim 7
Dependent Claim
21 words
The plane multi-digit type electric discharge display device as claimed in claim 1 wherein said counter electrodes comprise transparent electroconductive plates.