Could it be that on lcd screens you can't eliminate blue light fully? Tested this with comour filters on iphone 8. Fully red, still emits blue at angles when he

Could it be that on lcd screens you can't eliminate blue light fully? Tested this with comour filters on iphone 8. Fully red, still emits blue at angles when held to a wall. Apple watch with red flashlight on doesn't do this. (It's oled)