I found this in internet :I can verify that putting some material between the LCD and the display casing solves the issue. My display was already so bad, that it had the error every time I opened up the laptop. I had to twist the display for minutes to get it to work and on the slightest hitch it went out again. Now with some filling between LCD and casing the error stopped completely. It just seems to be a loose contact caused by the rather flexible construction of the screen. Disassembling the MBP and the display wasn't hard at all. I got the whole repair done in half an hour.
Yesterday i only pressed the display in the right border of the case and the issue seem to get better .
Today i wanted to take apart to put a filling between LCd and case , but the display it's perfect now
Tomorrow i'll see .