Albert, I don't know if you've solved this problem yet. I am wondering - do you mean the part that connects to the LCD at the top or the part that connects to the motherboard at the bottom?
The part at the top is a standard 30 pin LCD JAE connector. If you go to ebay and search for LVDS cable, you will find several cables that have the same 30 pin connector that you can use.
The bottom that connects to the motherboard is also a type of JAE - but female connector. You can buy the receptacle from online suppliers such as mouser or digikey, the name of the receptive is: 656-FI-WE21P-HFE
However its tiny and difficult to work with. Worst case scenario you could always buy a replacement neck on ebay.