How does LCD monitor from a laptop work and comunicate with the motherboard?

Hello everyone, As far as know most laptops LCD monitors are connected to the video card on the motherboard by a video cable. The LCD also has AC/DC inverter that converts low voltage DC power to higher voltage AC for a backlilght bulb. Do all laptops today this type of structure? Do all monitors today have... show more Hello everyone,

As far as know most laptops LCD monitors are connected to the video card on the motherboard by a video cable. The LCD also has AC/DC inverter that converts low voltage DC power to higher voltage AC for a backlilght bulb. Do all laptops today this type of structure? Do all monitors today have backligh bulb?

Thanks in advance.
Update: thanks... are you saying that those lcd monitors that are using backlight bulb use latest technology. how did it work before?
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