A recent design improvement with NEC-Mitsubishi's aperture grille line is their multi-layer anti-reflective, anti-static, vacuum-deposited screen coating. With vacuum deposition, the thickness of the applied layers can be precisely controlled, and they are very evenly applied (versus spraying them on, as seen in many other monitor designs). Given that the glass on a monitor is typically thicker with different tint characteristics in the middle compared to the edges, coating thickness can be dynamically controlled based on the amount of tint in the glass layer, resulting in a more even and uniform screen image display.
Similar to Samsung, NEC-Mitsubishi has improved their electron gun output over the past year to provide brighter and more color-saturated display of video content. Their SuperBright technology is included in the sample 19" MultiSync FE991SB unit in our lab, and it increases from the standard 100-120 candela output up to 300 candelas at the maximum SuperBright setting. Blooming effects from the higher electron beam output definitely occurs for text based office applications, but when looking at Web sites, images or DVDs, it's actually ideal per Atanus. SuperBright technology has three settings (OFF/Text, Images, and Video), similar to MagicBright.
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About three years ago, CRT makers starting using two focus grids in each electron gun to steer the electron beam more precisely. But there was only a single lens inside the gun. NEC-Mitsubishi added a second lens to improve focus by 20% in their new U-NX gun. For those who are curious, because you likely won't find this info easily on the Web, U-NX means Ultra (Electro-field extended electron lens with integrated resistor), Neo (new compared to the original XF electron gun), Extended field lens. You can see the difference between beam spots formed by older conventional guns with a small primary len, compared to a U-NX gun (represented in the diagram below by an electron beam passing through a past-generation S-NX gun's large primary lens to the secondary lens of the U-NX gun, creating a much tighter focused beam spot.).
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Another interesting development was in the area of deflection yokes. NEC-Mitsubishi's new U2 deflection yoke (used on its 19" and 22" aperture grille CRTs) reduces misconvergence error and also offers greater horizontal deflection sensitivity, which results in lower power consumption and a greater horizontal scanning frequency range.
Contrary to shadow-mask CRT cathode designs that build up harmful deposits over time, resulting in reduced electron emissions (as mentioned earlier), NEC-Mitsubishi claims that their patented scandium-oxide-coated cathode (Mitsubishi has had this technology in place for about four years; they do not share it with shadow mask CRT makers.) inhibits deposit build-up and maintains screen brightness for much longer periods. Atanus mentioned that while shadow-mask CRTs might lose 50% brightness in 10,000 hours, their aperture grilles maintain 90% brightness after the same timeframe, on average.
