As mentioned by caitlinsdad all the driver circuitry required to run the display is proprietary and integrated into the laptop's main board. The reason the display is so light and this is because all the electronics reside in the main body of the laptop. Either way you look at it you will need the main board, working or not, to make it a functoning screen.

Say you have a broken main board. You will need to work out what components on that board are driving the screen. Other then the GPU. Then hope that the driver chips being used are chips that are easily sourced. Chances are they are custom chips produced specifically for HP and programed with HP proprietary firmware.

Lets just say you can get all the components. Now you need specialized equipment to see through the multiple layers of the board and follow the traces from one component to another to work out the schematic and make your own board.

If you have a working main board and can work out which circuits on the board control the screen then you should be able to figure out a way to hack it. Or just attach that main board to the back of the screen and more on. But that takes away from how thin and light the screen is.

pretty much what caitlinsdad said. I think 2 german guys did it once, but they used like 200 dollars worth of hardware (with the finished project maybe like 80 dollars?) and a ton of effort. so it's really impracticle

It COULD be used for other purposes then as an LCD screen.

Think outside the box.. ...

We have "picture frame"

Some suggestions here

 Maybe a mirror? 

etc & etc.