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Old 09-28-2020, 09:35 AM   #8
Quoth
the rook, bossing Never.
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Posts: 11,635
Karma: 87590587
Join Date: Jun 2017
Location: Ireland
Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper11
My ideal
A 7.5" diagonal screen, thicker body, recessed page turn, power and home on the side and overall 110 mm x 178 mm with a hinged screen protecting cover that folds to the back would be good. Also IR rather than capacitive to have the brighter screen without front light.

In other words, Pocket Book / Mass Paperback size with a protected recessed screen that shows as much text as the paperback.

Currently an 8" ereader is just too bulky and a 6" too small, so indeed the 7" @ 300 dpi is as good as it gets. The Original H2O is SLIGHTLY brighter in ambient light than the Libra or Kindle PW3, no doubt because it lacks the almost transparent metallised layers that capacitive touch needs. A side by side comparision by room lighting showed the PW4 is ever so slightly greyer than the Libra or PW3 (which are identical grey/white without the front light in normal reading light).

If the Libra and Forma were fatter, then the PCB would be able to be behind the display's alloy support. That would cut the width by nearly 20 mm(a 3/4"). The obsession with thinness for things you'd not put in tight jeans is plain stupid. An add-on cover adds 3mm to 4mm depth, compared to 1mm for a designed on flap and also about 3mm width, or a lot more on stupid phone bumpers. A consequence of design for advertising and not for real life.

A Company I was with in the late 1980s studied this for a PDA design. Tested pockets, suits, handbags etc. Up to 10 mm is fine. Even 12mm if the cover is built in. We made wooden models with hinged lids and simulated displays.
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