Yup, I have the same problem, even after iOS8 update.
Also, unlike the "flicker" videos on YT that seems to affect the keyboard area of the LCD, I get a flicker sometimes when I have a missed call or text notification when the screen is locked and you click the home button. Its like 1 or 2 lines that appear intermittently on the same line that the notification is on, up towards the top. Although I have not seen anyone post a video showing that issue.
Have you experienced that? Or just the jitter?