Do LCDs need negative voltage

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Redesign
Posts: 19
Joined: Fri Mar 09, 2018 10:09 pm

Do LCDs need negative voltage

Post by Redesign »

Do LCD modules need negative voltage? What is the reason for negative voltage?
LCD_Designs
Posts: 262
Joined: Thu Feb 22, 2018 9:49 pm

Re: Do LCDs need negative voltage

Post by LCD_Designs »

It is not common for a character LCD to require a negative voltage. Years ago it was necessary to handle colder temperatures, but current TN fluids have removed the need for negative reference voltages.
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