Samsung is moving right along with its transparent OLED laptop displays. Take a look at the following video demonstrating this 14 inch transparent OLED screen.
(Samsung Transparent OLED Laptop video)
It even offers 40 percent transparency when it's turned off, which I suppose gives you a great view of ... the keyboard? I'm not really sure why I would want a laptop with a transparent screen. I admit that the first application that occurred to me was that if I had had one while I was an undergraduate, I could have looked at girls walking by without having to look up from what I was reading.
My first encounter with a transparent display came in H.G. Wells' extraordinary 1936 film Things to Come. As you see in the screen capture below, the technologically advanced society of the future makes use of widescreen transparent flat panel technology.
Take An Infinite Walk In Flexible Spaces
'The walls began to purr and recede into crystalline distance, it seemed, and presently an African veldt appeared...'- Ray Bradbury, 1951.
HP 3D Display Images Hover Above Device
'Instantly there appeared standing upon the disk... a lifesize and moving and stereoscopically perfect image...'- Edmond Hamilton, 1928.
LCD-based Smart Contact Lens Display
'You've got DreamTime technology in contact lenses? That's not available to the public!'- Niven and Barnes, 1992.
Technovelgy (that's tech-novel-gee!)
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Sky City's 220 Stories Are Go
'It rested among green parklands and... stood in total isolation, a glittering block of whites and flashing windows dotted with colors.'
Robo-Raven Flapping Wing Robot Bird
'When he had first built them, they had been crude indeed, flying mechanisms with little more than a reflex-response unit.'