Laptop lcd panel (dell xps m170 truelife) Part number?

Hello, I recently had an accident with my laptop (dell xps m170, 17.0" wuxga truelife.) Me and a friend removed the panel and saw that it is an lg philips and LP171WU1. The thing is when im searching for a lcd panel like this I find it but at the end of LP171WU1 theres always something like (tl)(a1) or (a4)(k6) etc. I'm thinking the correct model for my laptop is the (tl)(a1). It is 1920x1200 also. Anyways looking for someone to help and confirm this, or if im totally of to guide me to the right thing. I will continue to search as well. thanks!