I’m having trouble creating a bright LED fabric, can someone give me a way?
Can try reducing your area-light strength (or just removing it) and boosting the emission shader’s value above 1.0.
Another simple setup you can try is to delete the emission and mix shaders.
Then put the mask texture through a vector multiply into the principled sharder’s emission input (and boost the emission above 1 with the vector multiply).
You may also need to have a darker base-color on the principled shader.
Good luck.