Google Nexus One Black

The high resolution, high pixel density OLED display on the Nexus One is beautiful, even stunning on first view, but as we’ll see there are lots of issues, problems and artifacts lurking just below the surface, which we will explore in detail in this article. This is not altogether surprising since OLED displays are at the leading edge of display technology – they are still under development and still being perfected as a production display for use in consumer products.

Another unusual aspect of the Nexus One display is that it uses a PenTile pixel arrangement, where there are only two sub-pixels per pixel instead of the usual three, Red, Green and Blue, that are used in most display technologies. Every PenTile pixel includes a Green sub-pixel, but the Red and Blue sub-pixels appear in alternating pixels. In principle, that is only a minor issue because if Red or Blue isn’t available in a particular pixel, then the display driver can just use one from an adjacent pixel. But In practice, it makes things a lot harder for the software and makes it very likely that artifacts will creep into the on-screen images. Note that a 800x480 PenTile display only has two-thirds of the total number of sub-pixels found on an 800x480 LCD, so it won’t be quite as sharp as a typical 800x480 display.

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