I bought a SAMSUNG 204BW 20" LCD Monitor from Newegg last month. Plugged it in - good color/performance for a TN panel....but there isn't a "a" or "c' or even "s" on the back....to specify what type of panel it is?
LS20hAWCN7 = The vendor model number of the product. In this case Samsung's 204BW. The LS20HAWCSQ is Samsung's 205BW monitor.
XAA = This is most likely the factory code (or country code) the model was put together. That doesn't mean anything though.
Suppose XAA is Korea where Samsung should have a plant that builds 20" 6-bit TN panels for LCD monitors. Those panels don't just stay within Korea, they could be flown out to several OEMs. The flip side is Samsung could be importing CMO or CPT panels from China and use them to build 204BW monitors with the XAA code because their plant cannot produce enough 20" LCD panels for Samsung to install in their own products and to sell them to other OEMs.
If you want to know exactly what LCD panel you have, you gotta do surgery. A little too timid to do some surgery and void your warranty? Then just sit back and enjoy your LCD monitor.
Then the only way is to use a flathead screwdriver to pop the plastic casing open. There should be "slots" at certain points where the front and the back of the panel meet to insert the screwdriver.
At this point, it is not worth doing surgery unless you feel real confident about your abilities. Using a screwdriver can mar those "slots" which would void your warranty. You might as well sit back and enjoy your monitor.
Samsung has a plant in Mexico and Slovakia that makes LCD panels for computer monitors. They will be building a LCD plant somewhere in China, but the LCDs will be strictly be used for TVs.