This doesn't really apply to Arduino, but I was just wondering if there is any info available on the average lifespan of basic, monochrome black LCD displays (the type you'd see in old calculators, handheld video games, battery-powered devices, etc.).
As silly as it sounds I couldn't find much online about it, mainly because a search regarding longevity or lifespan of LCD returns an unending abyss of HDTV questions that don't really pertain to the question I am asking.
Obviously any electronic device eventually fails, but is a basic, low-voltage LCD one of those devices that has less than a decade before death (assuming nonstop use), or could you bury it in a time capsule with an indefinite power supply and unearth it a century later only to find it still works just fine?
I have an HP-15C calculator with a monochrome LCD display that I bought in 1985, and it is still working perfectly. It is not powered up very often, though.
Although they were still working, I replaced the three tiny 357 button cells in about 2009. At one time, HP made high quality electronics.
Good point about overseas. Most chips and displays are manufactured in Asia and it is now almost impossible to know anything about quality control. To say nothing about counterfeit parts!
So, anything moses1592 might learn about LCD displays would probably be useless.