While other smartphone vendors have also released smartphones with AMOLED displays, the S4 has the highest resolution so far, with a pixel format of 1, 920 by 1, 080, IHS senior analyst Vincent Leung explained in a note released Tuesday morning.

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With the iPhone 5, Apple is expected to move to a larger display size, at about 4.0 inches diagonally, as opposed to 3.5 inches for the previous models, including the iPhone 4S. The pixel format will likely increase to 1, 136 by 640 pixels, up from 960 by 640 for the iPhone 4S, maintaining 326 pixels per inch resolution.

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But that amounts to only half the frame rate HDTV broadcasts use in their 720-pixel progressive format.

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There's also a very limited amount of content in the new pixel-heavy Ultra HD format, though more will likely be churned out in the coming years.

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The Cintiq 22HD touch offers a wide-format, full HD LCD with 1920 x 1080 pixel resolution.

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