Inside an LCD voltage tester (with schematic)

A very simple device. I've never really considered that LCDs have an accurate threshold voltage at which a segment will change state. I get the feeling this display has a higher voltage than average.
The use of printed resistors is an interesting evolution from the traditional surface mount ones. I suppose that a variation in carbon ink thickness isn't too critical as it still results in an equally scaled voltage divider.
I specifically avoid using intrusive mid-run video adverts for a more relaxing viewing experience.
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