Instructables

Interfacing With Glass Calculator LCD displays.

I have a bunch of those glass calculator LCD displays laying around at home and I was wondering if anyone had figured out a way to use them as regular LCDs. I have never been able to work with them in the past because they have all used the ribbon cable or foam thing to connect to the PCB. Is there another way that does not involve making a special PCB and enclosure to work with it, like with copper wires and some soldering?

You need a driver IC to run the screen. These ICs are integrated on the calculator's main board. If you can figure out what IC it uses you can figure out how to interface with it. Unfortunately most of those have the chip under a plastic blob and give no identification markings.