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Early 1440p computer displays became commonly available in 2010. Dell's UltraSharp U2711 monitor was released in 2010 as WQHD, with a 1440p widescreen. [1] The 27-inch Apple LED Cinema Display released in 2010 also had a native resolution of 2560 × 1440, as did the Apple Thunderbolt Display which was sold from July 2011 to June 2016.
This chart shows the most common display resolutions, with the color of each resolution type indicating the display ratio (e.g., red indicates a 4:3 ratio).
The 27-inch version of the Apple Cinema Display monitor introduced in July 2010 has a native resolution of 2560 × 1440, as did its successor, the 27-inch Apple Thunderbolt Display. The resolution is also used in portable devices. In September 2012, Samsung announced the Series 9 WQHD laptop with a 13-inch 2560 × 1440 display. [19]
A new more-than-HD resolution of 2560 × 1600 WQXGA was released in 30-inch LCD monitors in 2007. In 2010, 27-inch LCD monitors with the 2560 × 1440 resolution were released by multiple manufacturers, and in 2012, Apple introduced a 2880 × 1800 display on the MacBook Pro.
The 64:27 aspect ratio is the logical extension of the existing video aspect ratios 4:3 and 16:9. It is the third power of 4:3, whereas 16:9 of widescreen HDTV is 4:3 squared. This allows electronic scalers and optical anamorphic lenses to use an easily implementable 4:3 (1.3 3 ) scaling factor.
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On July 26, 2010, the 24-inch LED Cinema Display and the 30-inch Cinema HD Display were replaced by a 27-inch model that supports up to 2560×1440 resolution. This model was sold for $999. [10] On July 20, 2011, the LED Cinema Display was discontinued and replaced by the Apple Thunderbolt Display.