Display apparatus

Details Display apparatus Display apparatus

1988-10-31

1991-09-17

Brier, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

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

340784, 340811, 359 55, G09G 304, G09G 336

Patent

active

050498657

ABSTRACT:
A display apparatus having an X-Y matrix type display panel with data and scanning electrodes has a driving circuit for driving the scanning electrodes which driving circuit is divided into two portions. One portion is for odd-numbered scanning electrodes and another portion is for even-numbered scanning electrodes. By actuating the odd-numbered electrode driving circuit and the even-numbered electrode driving circuit alternately, in a staggered fashion, a conventional single electrode scanning mode is obtained. However, when the odd-numbered electrode driving circuit and the even-numbered electrode driving circuit are simultaneously actuated, a dual electrode scanning mode is obtained. Thus, two diffrent scanning modes can be obtained by providing an appropriate display mode switching signal to the odd-numbered and even-numbered electrode driving circuits.

REFERENCES:
patent: 4499459 (1985-02-01), Sasaki et al.
patent: 4630122 (1986-12-01), Morokawa
patent: 4739320 (1988-04-01), Dolinar et al.

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