Looking for screen replacement for LG LCD model 42LK450
You could try disassembling it, because in most cases on lcds there is the
very delicate actual panel, and then a thin piece of protective
plastic. If there is, you can simply replace that. It all depends on
whether the lcd itself is damaged.
Without more information, it's difficult to tell
how hard it'll be to do. It can also be quite expensive (usually around
the original cost of the TV for a new replacement screen). If you have a
LCD projector set, that too can be quite expensive unless you're able
to obtain a rebuilt unit somewhere.
I would recommend selling the parts on ebay.