3v Lcd

**Ron Marcus** · - 11th August 2005, 18:11

I had a similar challenge, but without backlight. I programmed the hardware PWM to be a squeare wave oscillator at around 10 KHz. I then used two shotky diodes and two caps to double the voltage. After an LDO 5 volt regulator, I had enough power to run the LCD. Hopefully the backlight you chose can be powered seperately from 3 volts. If not, you will need a real boost regulator (try Maxim) to give you enough current for the backlight.

Ron

**khoog** · - 11th August 2005, 18:44

Thank you for your replies.

I have found a Vishay part: LCD-016M002L that may do the job.

I like the idea of a cell phone type graphic lcd.

Need to find a generic version- all I could find on the Nokia part were cell phone surplus parts for hobbyists. Can't really design those into a product because they may not be available 2 or 3 years down the road.

Thanks again,
Klaus

**NavMicroSystems** · - 14th August 2005, 22:35

Originally Posted by khoog

I like the idea of a cell phone type graphic lcd.

Need to find a generic version- all I could find on the Nokia part were cell phone surplus parts for hobbyists. Can't really design those into a product because they may not be available 2 or 3 years down the road.

Klaus

Klaus,

It is a matter of quantity

Say your your target is 1k per year for the next 3 years.

So you would need 3k LCDs.
Why don't you just get them now at far less than $1 each (@ a quantity of 3k) and put them on the shelf?

I agree, there is not much of a chance of the same kind of display being available in three (or five) years time, but who cares, Wouldn't you have re-designed your product anyway in 2010?

And having a GLCD makes your product look much better than the competition (if there is any)

Attached if an image of one of my projects built around my "favourite" $0.75 Cellphone LCD.