We use character LCD displays in many of our apps. Often they are backlit. Sometimes we have used [mostly] compatible VFD.
I found that the PLED "drop-in replacements" for character LCD displays are now available at a decent price from OSD:
The current draw looks OK--the 2x20 datasheet has a typical of ~100mW @ 5V.
But there is one disturbing item in the datasheets--shelf life of 5 years, and operating lifetime of ">10k hours".
Now, in an industrial app that is intended to be powered-on 24/7/365 or thereabouts, and there are almost 10k hours in a year, I don't want to be replacing displays left-and-right in a year or two.
Does anyone know if the short lifetime is inherent in this technology? Is there some kind of degrading over time? Should this type of display be avoided for apps that will be always "on"? Has anyone had experience in designing-in PLED character displays? How was the compatibility with HD44780?