How to turn screen backlight on/off for IdeaPad Tablet K1
Turning Screen Backlight On
In the standby mode, you can tap the "Power" button on the upper left of the IdeaPad Tablet K1 to "wake" the screen up. The device's screen will then light up, indicating that the backlight has been turned on.
Turning Screen Backlight Off
If your IdeaPad Tablet K1 is powered on and you do not use it temporarily, you can tap the "Power" button on its upper left to turn off the screen backlight. Your IdeaPad Tablet K1 will enter the standby mode to save power.