Samsung LE40M91: 40" LCD TV with LED Backlight

Samsung has announced the first commercially available 40″ LCD TV with a LED backlight echewing the traditional CCFL-based backlight. CCFL has been the king of backlight but is now being challenged with LED. LED has advantages: very slow degradation of light output through 50,000 hours versus CCFL’s slow but sure decline. LED also provides much better color gamut that can exceed 100% NTSC. CCFL, with recent developments, have reached 92% NTSC with traditional CCFL’s at 72%. The LE40M91, however, limits the excitement with a low resolution of only 1366 x 768. Although DailyTech is reporting that the color gamut is 146%, I highly doubt it is that high. I am sure it is wrong because the article states a typical color gamut of 127%, which is absolutely not correct. Contrast ratio is 10,000:1 but this is based on actively managing the backlight to enhance contrast ratio (dynamic contrast). Non-managed (static) contrast ratio would be around 1000:1 at best. Brightness is at a standard 450 cd/m2.

What I would have liked better is to see a 1920 x 1080 resolution screen. Samsung is clearly targeting high-end consumers by using a modern LED-based backlight system. But then Samsung degrades the model by applying it to a very low-specification 1366 x 768 screen. As I have mentioned many times before, at 1366 x 768 every single source of video whether it is SD or HD will need to be scaled–decreasing the video quality. Up-sampling 1080i content to 1080p and then completely filling the beautiful screen would have been a better choice.

[tags]Samsung, LE40M91, 40″, LCD TV, LED Backlight, Full HD, 1920 x 1080, 1080p[/tags]

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