Screen Saver (Daydream)
Screen saver (Daydream) is a feature that protects your TV from screen burn. It turns on if you don't operate your TV for a certain length of time. It won't turn on while you watch TV programs or videos.
Idle TV Standby
Idle TV standby powers off your TV after a certain length of time. It will activate when there's no remote control or TV operations, even if you're watching a TV program or playing videos.