Are transparent displays dumb or brilliant?
The answer is yes. See-through screens won't be used in phones and tablets, but they'll enable your windows to run Windows.
The "What's Hot" list is Google's ongoing popularity contest for posts on Google+. The clear-screen iPhone and iPad posts inspired a lot of talk about whether such displays are feasible and, if so, desirable.
The general consensus: "Cool! I want one!"
The pictures are "design fiction" -- drawings and videos created with the help of software to create the illusion of reality.
It's clear that transparent displays are bad for mobile
The good news is that transparent-display phones and tablets are possible. The bad news is that they're undesirable.
Docomo and Fujitsu built a prototype transparent display for a multi-touch mobile phone. (The touchscreen works on both sides!)
This research may have inspired designers to engage in some Fujitsu-branded fantasy design concepts that included a display that toggles back and forth between transparent and nontransparent modes -- for example, showing words in a book one moment, then the words translated into another language the next -- much like the pretty Word Lens app I told you about previously in this space.
The blog Concept Phones has been publishing pretty pictures of fantasy phones for years. They've become something of a banality on the design-fiction sites.
Real transparent-display phones will probably become available within a few years. But they'll never go mainstream.
Display quality is important to users. Phone and tablet makers work hard to maximize the quality of displays. Apple says its Retina display is the best in the industry. Some reviewers say displays in some Samsung phones are higher quality or more or less the same quality as the iPhone's display, but bigger.
On any display, picture quality requires clarity -- black blacks, white whites and vibrant colors. If the background bleeds through from the other side, picture quality will suffer, even if companies figured out how to make a see-through screen as high resolution as a conventional display.
The replacement of a high-resolution screen for even a high-resolution transparent screen would involve a dramatic reduction in image quality.
The need for long-lasting batteries is a another problem facing companies interested in developing see-through screens. Because they must last as long as possible, batteries these days are so big that they occupy most of the physical space inside smartphones and tablets -- so it would be pointless to have a transparent display. If companies want to offer see-through displays, they'd need very small batteries that fit somewhere near the top or the bottom of their devices, and such batteries probably wouldn't last very long.
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