The display unit of the iPod Touch 5G consists of 3 parts which are glued together. It is possible just to change the frontglas, but this is rather complicated and needs special equipment. It is easier to exchange the whole display.
Here we offer you the whole unit iPod Touch 5G Display unit with frontglas, touchscreen and LCD. You wont see any difference to your former display unit. The quality is exellent.
The iPod Touch 6G uses the same display.