Saturday, November 21, 2009

new Samsung Series 9


Samsung's A950 series of LCD HDTVs has been designed to be the next step in image fidelity for liquid crystal display technology. These home theatre HD TVs use Light Emitting Diodes (LEDs) that can selectively illuminate sections of the screen at a time, which means that they have a wider color gamut and better colour reproduction. They also boast superb black levels, do away with back light bleeding, and offer unbelievable dynamic contrast ratios.The transition from Cold Cathode Florescent Lamp back lights (CCFL) to LED back lights also means that the Samsung 9-series televisions should have noticeably longer life span than previous LCD HDTVs. One of the problems with CCFL bulbs is that they steadily lose brightness from the day they're turned on, and within a few years of steady use can drop down to half of their original luminance.Samsung's LN55A950 selective LED back lighting reduces the overall amount of time individual LEDs are illuminated, and the LED matrix itself is much more resistant to dimming and burning out, which translates into a longer-lasting and more durable HDTV. The Samsung series 9 LCD HDTVs also take advantage of selective LED dimming which make them more power efficient than an equivalent CCFL HDTV.The Samsung LN55A950D1F is a 55" 1080p LCD screen that supports both 60 and 120 Hertz refresh rates. Samsung rates the dynamic contrast ratio of its new localized LED back light at an astonishing 2,000,000 to 1, with an overall brightness rating of 500 cd/m2. The excellent viewing angles of Samsung's previous LCD HDTVs have been preserved, so the LN55A950 can be viewed from 178ยบ either vertically or horizontally without colour distortion or dimming, and has an overall 4ms grey-to-grey response time.

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