my reader's screen and on/off button is broken :((

hello i have a sony book reader i bought it one year ago and there was no problem , i haven't used it for 3-4 months and today i opened it to use .However screen looks like broken . Here is a link which shows the problem. Also , on/off button doesn't work too. I can't shut down now, however It turned on after charging. What does the problem related to? Does it cost too much??

http://imageshack.us/scaled/landing/21/screen2jd.jpg