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True 3.3v LCDs

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True 3.3v LCDs

By whittenburg
-  Fri Sep 22, 2006 12:12 pm #19410
How about some 3.3v lcds? Ones that can run both logic and backlights off 3.3v. No need for any charge pumps or bias tricks.

www.topwaydisplay.com for example has LMB162ADC-4, which can operate within 3.3V voltage even the Backlight ( STN gray LCD and white LED backlgiht). Around $3.00 in qty of 200.

I'm sure there are others....

thanks.

By Krogoth
-  Thu Sep 28, 2006 7:40 pm #19730
I read on another forum that someone modified a Nokia 6610 LCD to use the backlight LCDs in parallel instead of series (The backlight is just 2 side-facing white SMD LEDs with a forward voltage of 3.3V and forward current of 20mA). As long as you had a 40mA current-limited 3.3V supply, you could run them off 3.3V. However, you may as well get a charge-pump since it saves you modifying the LCD.
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