LSiPadBright allows you to change the brightness of the iPad tablet screen from the lockscreen

  LSiPadBright is a tweak released today in Cydia, and with its help you can manage the brightness of your tablet's screen from the lockscreen. As soon as you install the tweak from Cydia, you will install a slider in LockScreen that allows you to change the brightness of your tablet's screen very simply and easily. The tweak is made only for those who want to have everything in front of them without taking actions while the tablet is locked, so probably many will overlook it.

Only for iPad. Ever wanted to simply adjust the brightness of your iPad's display from the LockScreen? Then this is a tweak for you. It is dead simple.

  LSiPadBright is available for free in Cydia.