different result for same panel in 3 different models?

I think the same connector plus a panel with a resolution supported by the BIOS are probably all you need. All recent panels use LED backlighting.

There's a lot of info on the www about panel compatibility and the specialist LCD suppliers should be able to confirm whether the panel you propose to buy is compatible with the panel on your computer.

John

 

thanks for the quick response. i have hard time finding the relevant information. can you recommend any article/website with further info?

 

I don't know of any comprehensive table. This guide says there's not much to check.

I am also surprised by the lack of detailed compatibility tables and much of the discussion about compatibility is several years old. I wonder if this is because display manufacturers have adopted a limited number of interchangeable formats perhaps under pressure from notebook manufacturers who like to be able to use different sources without having to make changes to fixings and connectors.

In fact, I changed my first panel a couple of days ago (to fix a broken screen on a friend's computer). I got the panel from an ebay supplier who listed it as compatible with what was in the computer. The on;y part of the process that had me temporarily puzzled was the plug / socket arrangement for the cable. Effectively, the strip of contacts on the end of the cable is poshed into the socket on the panel and held in place by adhesive tape.

Going back to your original question, there seems to be a limited number of manufacturers of high viewing angle displays. eg LG-Philips (IPS), AUO (AHVA), Samsung (PLS).

John