Most displays do not require drivers and ones that do, rarely need updates. Are you sure you are looking for a driver?
I have a Samsung LCD TV Model No. LA40A550P1F. I have just tried to update the driver via the Samsung Driver Update site but my model number does not appear in the dropdown box. Back in August I upgraded the driver from this site, but I suspect that I may have selected the driver for model no. LN40A550P1F.
I bought the TV in late 2008, so perhaps there are no driver updates for this model anymore?