I can confirm I have problems with this too on other emulators.
Try to play lameboy and some rom, pause the emulator, put the light on the highest and wait for like 20 min. Press the power button and you will see your screen is still there for a split second.
Lameboy also have a touchscreen function. Put it on touch screen and do the same.. the same thing happens!
The screen from the game you played stay for a long time.. however I never had a pernamently burn yet.
* I only had this with the DSIXL
Try to play lameboy and some rom, pause the emulator, put the light on the highest and wait for like 20 min. Press the power button and you will see your screen is still there for a split second.
Lameboy also have a touchscreen function. Put it on touch screen and do the same.. the same thing happens!
The screen from the game you played stay for a long time.. however I never had a pernamently burn yet.
* I only had this with the DSIXL