Android. How to turn off the backlight of the screen without going into sleep mode?

Question

Java

Hello!
It is necessary that the screen is dead after 10 seconds of inactivity, but does not go into sleep mode, the application works with NFC. When you present the card, you need the screen to light up and show the information. When going to sleep, NFC becomes inactive.
How to turn off the backlight of the screen without going into sleep mode? Or suggest another way.
Thank you!

Answer 1

you need to capture WakeLock