
A laptop's panel can account for over half of its overall power usage, according to Intel, hence why it's teamed up with Samsung Display on a new OLED technology to reduce power consumption by as much as 22%.
It's called SmartPowerHDR. It works by analysing each frame's peak brightness in real-time, sending that data to the panel's Timing Controller (TCON), which then optimises the voltage sent to the panel based on how many pixels are active on-screen. More or less, it's adapting the voltage depending on what the screen displays. Today's HDR modes apply a fixed voltage.