Here's an excerpt from a chat I recently had with Samsung Tech Support regarding an issue I was having with my new UN60F7100:
Harry: It is just a simple difference. Any TV which has H for example UN32FH5300 or UN55EH6030 are back lit TV's. The TV's which do not have H in the model number such as UN55ES6000, UN55F6500 are side lit or edge lit TV's.
Harry: We can always see the backlit TV's have higher resolution when you compare with edge lit or side lit; however, features will be good or better in edge lit TV's.
Visitor: huh?
Harry: Yes. You will see a greater refresh rate in back lit TV.
Visitor: that is BS! the FH models are 120Hz, while the F7100 amd higher are 240Hz.
Visitor: you do not know your products.
Visitor: I am obvioulsy speaking to a third party outsourced call center
Harry: We really apologize, the resolution/refresh rate in our terms is the contrast ratio.
Harry: I am sorry to use our technical terms.
Visitor: contrast ratio is NOT refresh rate or resolution. Resolution is either 720p or 1080p. Refresh rate is 60Hz, 120Hz, or 240Hz.
Harry: I am sorry for that.
Visitor: contrast ratio is a bogus number, as there is no industry standard used to measure it.
Visitor: do you even work for Samsung?
Harry: Yes. We are working at NJ for Samsung.
Harry: However, the contrast ratio will be definitely higher in Back lit when compared to Edge lit.
Visitor: contrast ratio is NOT refresh rate or resolution. Resolution is either 720p or 1080p. Refresh rate is 60Hz, 120Hz, or 240Hz.
Harry: Okay. Thank you for the information and I apologize for using the wrong terminology.