Question display lcd led ips

[aranbadam]

I have some consoles that I store, R36S and Powkiddy Q80, and they have an IPS LCD LED panel display. I have questions: if I store these devices for a long time (years or decades) without using them, do the LEDs and backlight on the panel weaken and lose performance even without use? Do the liquid crystals change and generate dead pixels and other problems on the LCD?

Here in my region, the temperature varies from 34 to 36C, with humidity ranging from 58 to 68%.