XL20 : Samsung's 1rst LCD LED
by Vincent Alzieu
Published on February 23, 2007
Brightness homogeneity
LED backlighting is made of a multitude of diodes. In addition to the wide gamut, they can also provide better panel homogeneity to avoid dark or over-lighted areas.
The XL20’s result is a bit disappointing at first. The gaps are moderate – less than 8% form one corner to the other – but not reduced to zero. This result is nevertheless:
-comparable to those measured with the Nec LED, the LCD2180WG, which also features LED backlighting but is much more expensive than the LCD2180WG.
- better than LCD monitors with standard CCFL backlights. Differences can attain up to 50% and more commonly 25% between two areas.
We confirmed in a previous article that CRTs were also subject to this problem. The Mitsubishi Diamondtron 930SB shows variations of up to 15%.
