Quote:
Originally Posted by ottischwenk
No, because plastic surfaces would also have to be created in order to avoid the questionability, and these do not have glass transparency and are also easily scratched.
And in order to avoid that, covers are needed again, which
- increase the weight
- and cost extra.
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The substrate is _below_ the eink layer. It is not the surface that you touch on the outside of the device. The glass substrate is flat and rigid, but easily broken. The plastic substrate is not as flat and much less rigid, but more durable than glass. Since the plastic substrate can flex a little, you can make a case that is less rigid than for glass. That makes the device much lighter (thinner case, lighter display).