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QHD (Quad HD) or WQHD (Wide Quad HD) is the designation for a commonly used display resolution of 2560 × 1440 pixels in a 16:9 aspect ratio. As a graphics display resolution between 1080p and 4K , Quad HD is often used in smartphone displays, and for computer and console gaming.
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.
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]
1080p progressive scan HDTV, which uses a 16:9 ratio. Some commentators also use display resolution to indicate a range of input formats that the display's input electronics will accept and often include formats greater than the screen's native grid size even though they have to be down-scaled to match the screen's parameters (e.g. accepting a 1920 × 1080 input on a display with a native 1366 ...
It is divided into three categories, containing smartphones with 720p, 1080p and 1440p displays. The "p-display" nomenclature used in this article refers to the number of pixels displayed across the width of a given phone's screen. Earlier phones with lower than 720p (lower than HD ready resolution) are not included in this listing.
The Digital Cinema Initiatives standard for 4K resolution; specification created in 2005 but not widely sold until 2014–15 [8] [9] 64:27 (2. 370:1) 2560×1080, 3440×1440 Used in some professional and gaming displays since the mid 2010s, roughly matches various anamorphic formats: 32:9 (3. 5:1) 3840×1080, 5120×1440
On August 2, 2016, Microsoft released the Xbox One S, which supports 4K streaming and has an Ultra HD Blu-ray disc drive, but does not support 4K gaming. [90] On November 10, 2016, Sony released the PlayStation 4 Pro, which supports 4K streaming and gaming, [91] though many games use checkerboard rendering or are upscaled 4K. [92]
Smartphones with 1080p Full HD display have been available on the market since 2012. [22] As of 2014, it is the standard for mid-range to high-end smartphones and many of the flagship devices of 2014 used even higher resolutions, either Quad HD (1440p) or Ultra HD (2160p) resolutions.