Why does an LCD monitor usually take 5-10 seconds to "wake up"?

Question

Monitors

I returned to the computer with the "asleep" monitors, moved the mouse, waited 5-10 seconds until the image appears on the monitors. Well, earlier CRT monitors needed time to warm up the filament in the kinescope. Now what are we waiting for?

Answer 1

I have a strong suspicion that this delay is due to the need to light the backlight.
Now I conducted an experiment - on a laptop (where LED backlight) - such an “awakening” takes a fraction of a second. And on the monitor (where the backlight is a conventional discharge lamp) - it took a couple of seconds there.

Answer 2

And another question on the topic: why do all tablets wake up instantly, and modern TVs need a decent time? Given that the tablet may have a higher resolution and more different hardware. And the menu on TVs slows down, like Chinese phones on their own OS (which were before the advent of android). Is it really impossible to put more powerful hardware in such a huge box with unlimited cooling and power capabilities?

Answer 3

In general, during operation, the life of the capacitors is gradually consumed, and as a result, a turn-on delay.

Answer 4

My LED monitor wakes up pretty quickly, but if you turn on the auto-selection of the input (there are 4 of them), then this process takes some time. Acer on the lamps cuts in too quickly, but it shows its logo.