In yellow channel 1 = the microcontroller power supply = 3VIn blue channel 2 = the common pin (COM1) of the LCDIn green channel 4 = a segment pin of the LCD (COM) Voltage levels for the LCD are 0.95 / 1.95V / 2.9V / 3.9V (coming from voltage booster of the µC)(SEG) Frequency = 1950Hz (period = 512µs => Time high = 256µs and Time low = 256µs and 2V is the In the spec I specify LCD voltage to 3.3V, do you think that I should change it to 4V, it will be more adapted to my application ? Thanks for your advices.Let me know if you need other data to understand the phenomenum. I will update the spec regarding your findings , trying to minimize this « ghost view » and also share you the small adjustments needed for the segments drawing.