Gas discharge type light emission apparatus and method of drivin

Details Gas discharge type light emission apparatus and method of drivin Gas discharge type light emission apparatus and method of drivin

1989-09-28

1993-05-18

Oberley, Alvin E.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340774, G09G 322

Patent

active

052124720

ABSTRACT:
A method is for driving a gas discharge type light emission apparatus having an electrode block line(s) constituted by electrode blocks. Scanning of adjacent cathodes, one being in one of two adjacent electrode blocks and the other being in the other electrode block, is effected such that subsequent to the scanning of one adjacent cathode, at least one cathode other than the other adjacent cathode is scanned prior to the scanning of the other adjacent cathode. By the method, crosstalk between adjacent electrode blocks is prevented without the provision of a partitioning member between the adjacent electrode blocks. A gas discharge type light emission apparatus includes an anode(s) on a front substrate and cathodes on a rear substrate. The anodes and cathodes face one another via a discharge gas medium to constitute discharge cells. The anodes are made of a light-blocking material and including windows at positions corresponding to the cathodes. The windows are also provided at positions corresponding to boundaries between adjacent anodes. By providing windows, discharge light emission having a clear shape and a high resolution can be obtained.

REFERENCES:
patent: 4021851 (1977-05-01), Le Coquil et al.
patent: 4081717 (1978-03-01), Kaji et al.
patent: 4303917 (1981-12-01), Kishino et al.
patent: 4529909 (1985-07-01), Kamegaya et al.

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