The video above shows some of the initial visions for tablets. Forward 17 years to the current consumer market and only now are tablets starting to be successful. The iPad may not be the first tablet in the market but arguably it's one of the most successful. Apple as a company is pretty good at introducing products to new consumers. Their philosophy on ease of use and great ads have helped some not so tech savvy people be more comfortable with technology. (Whether you like the closed system imposed by Apple is another story).
The video below shows what the future might hold for tablets. Samsung has prototypes running for their flexible display. The time for that to reach mainstream computer products may still be far off. Still this is a very interesting technology. The possibility of having it paper thin and light is intriguing. I wonder if they could get AMOLED type screens on a flexible display.
On a side note, I don't want transparent displays. Whatever happened to privacy?