Comment by futhey

Since there's so much depth (thickness) in the bezel, you need more margins around the readable content to account for shadows.

One solution would be to use a mat board to separate the content from the frame (instead of wasting e-ink screen space).

Another is to change the shape of the frame to remove shadows. However, I imagine you're already working against the cost of e-ink displays, and the mat board would have the added benefit of making the screen feel larger than it actually is.