"Thank you very, very much," Bale said after he and the cast took the stage and were greeted with a standing ovation. "On behalf of all of the cast from the movie, thank you very much to the fans and here's to Heath."
"Your excitement about the film has been the greatest reward we can imagine, so thank you very much," added director Christopher Nolan.
Ledger died last January at the age of 28 of an accidental prescription drug overdose.
Celebrity Families of 2014 [PHOTOS]
Say bye bye to Honey Boo Boo