Mosaic
Well-Known Member
Hi with ref to this:
**broken link removed**
Is it fair to say that the 'backplane' is equivalent to a common cathode or anode in a 7 segment LED.
Thus a 4 digit LED that has 4 common cathodes permitting sequenced multiplexing of the 7 data segments is equivalent to a 4 digit LCD with 4 independent backplanes?
Also, is it fair to say that LCDs require a much higher voltage to switch compared to LEDs and much less current.
Thus if I wanted to drive a multiplexed 6 digit, 7 segment LCD panel, I'd need a driver chip that accommodated 6 backplanes and 8 segment (incl. DP) drive lines?
I guess using a uC to do the job isn't on as the voltages need stepping up.
**broken link removed**
Is it fair to say that the 'backplane' is equivalent to a common cathode or anode in a 7 segment LED.
Thus a 4 digit LED that has 4 common cathodes permitting sequenced multiplexing of the 7 data segments is equivalent to a 4 digit LCD with 4 independent backplanes?
Also, is it fair to say that LCDs require a much higher voltage to switch compared to LEDs and much less current.
Thus if I wanted to drive a multiplexed 6 digit, 7 segment LCD panel, I'd need a driver chip that accommodated 6 backplanes and 8 segment (incl. DP) drive lines?
I guess using a uC to do the job isn't on as the voltages need stepping up.