[Q] Is there any way to dim the screen past minimum without using an app? Voltage etc topic

Samsung Galaxy S2

Yeah, basically I'm looking for a way to lower the minimum screen backlight brightness preferably by lowering the voltage. Would it be possible to do this reducing voltages etc & if not can anyone suggest a way it may be achieved without using an app running in the background. Just to be clear, an app that alters some setting to achieve this but doesn't run otherwise is acceptable.

Thanks for any replies

JQ

xda-developers