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 » Mon Mar 19, 2018 7:49 pm

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 » Thu Mar 22, 2018 8:20 pm

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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