Is it possible to turn an old laptop screen into a TV?

Without a functional motherboard and associated graphics chip, there isn’t much that can be done unless you have the skills and equipment to make your own chips.

Possible, but beyond your, my, or even (possibly) @jerv‘s skillz, and definitely more trouble than it’s worth.
On the other hand, it’s been projected that we’ll run out of certain of the elements present in your LCD monitor by 2017. You could recycle yours and move that date back by a microscopic fragment of a minute.

@Nullo I don’t have the skills or equipment, and even if I did, the time/effort required is worth more to me than the cost of the 27” flat-screen TV I’ve been eyeballing for the last week.

I did find this, which looks promising, if it is compatible.

I should add that from what I’ve read so far it does sound like a huge undertaking if you were to do it totally by yourself. And I do hand off all unusable or unwanted electronics that come my way to e-waste recyclers, and cross my fingers that it actually gets recycled. And I would love to have a 27” flat panel TV replace my like 10” flat screen CRT!