When running emacs maximized on my new screen, a black shadow at the bottom, that for normal viewing angles is just a few pixels wide, interfers with the readability of the minibuffer / echo area.
Is it possible to add some margin at the bottom of the minibuffer / echo area? This would act as a workaround to the problem.
Source of the Issue (cannot be solved)
My new (glossy) LCD/LED TV shows a pronounced black shadow at the bottom of the screen whose change as I look from a lower or higher angle -- it vanishes when I look vertically at the bottom edge -- makes it look as if there is a visible border behind the plane of the pixels. My guess is that this is caused by a significant (looks like some mm) distance between pixel plane and backlight plane. The same effect appears for my office screens but is much weaker there as they are smaller and matte, so I never noticed it until explicitly looking for it.
From this I conclude that it is (1) an unavoidable property of all (non-IPS?) LCD screens (2) normally not noticable unless abusing a TV as large computer monitor. Therefore I consider the hardware-issue unsolvable and need a workaround.
minibuffer-frame-alist). But this changes a lot of the interaction with Emacs, so it is probably not what you want to do, just to fix your problem.