On the Apple Watch and OLED displays
All Apple has said about the Apple Watch display is that it's 'flexible Retina', yet it's widely believed to be OLED.
That's interesting because Apple has thus far eschewed OLED (organic light-emmitting diode) displays for iPhone and iPad due to what the company said were the compromises needed to produce the panel at those sizes. A look back at things like PenTile and over-saturation in generations past makes that point hard to argue. Modern OLED, however, has improved considerably. At Apple Watch size, where power efficiency is the priority, those compromises start to fall in OLED's favor.
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