What u see there (weird colored stripes) is the actual LCD(part that creates the image) being cracked which is not repairable. Unless u can find a replacemt LCD module for that exact screen, you wont be able to get it working. If u take it all apart the other subcompononents can be useful for tinkering, like the backlight can be used for all sorts of things and there are funky optical filters in there but nothing that will be useful to you unless u like playing with electronics.

Edit: Just noticed that the screen isnt even fully dead. So then why not just use it as is? There shouldnt be any danger from the LCD being broken. If u cover up the dead part then its basically a 4:3 display you could use as a second monitor.