Heading off to Melbourne next week for a well earned holiday (plus Melbourne Model Expo is on

) and intend to take my PRS-300 travel ereader so I can read.
Never taken an ereader through airport security before and was wondering if they are OK with x-ray machines? I know digicams, laptops etc are fine but am worried about the display side of my travel ereader.
Anything to further concern me?