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Here's the conflict: everyone wants more durable screens, e.g. without the glass substrate. But people often want to be able to write on the screens, too, and so far, the only technology that seems to offer fine enough resolution to be able to do more than swipe to change pages or whatever is Wacom, which apparently requires a glass substrate. This conflict doesn't have much to do with the display technology itself, but rather with the input technology. Whoever solves it (at a reasonable price) is going to get a big boost.
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