Instead of having this debate scattered about in threads for different makes and models of HDTVs, I thought it would be a good idea to keep this in one place. I would like to start this thread with an issue which has been hindering my decision-making over the past week or two--the known types of LED backlighting and dimming.
Direct LED backlighting uses LEDs throughout the panel. Edge LED backlighting uses LEDs along the sides or top and bottom of the panel. With edge LED backlighting, a diffuser is used to reflect the light where there are no LEDs.
Frame dimming analyzes the general picture and adjusts the backlight level in large, general areas of the panel. Local dimming analyzes different areas of the picture and adjusts specific areas of the backlight level accordingly.
Just so you know, I got my info from Consumer Reports and Tech Radar. This is how I understand it.
Regarding backlighting, which can be viewed from more angles--edge LED with the defuser, or direct LED?
Regarding dimming, I can't understand why you'd have local dimming with edge LED backlighting, or frame dimming with direct LED backlighting. To me, that sounds like an upsidedown approach.