That's pretty sweeping -- it doesn't take much to look at the Nook and see that it has both an electronic ink display and a smaller LCD located next to it. Now, we don't know if Amazon has any plans to actually sue anyone over this patent yet, but we're guessing there's a flurry of legal activity happening at all the major e-reader manufacturers right now, and we're definitely curious to see what the fallout looks like -- remember, Barnes & Noble is already involved in a trade secret dispute over the Nook with Spring Design, which claims that B&N saw its Alex reader under NDA and then copied it for the Nook. That case isn't scheduled to wrap up before November, so there's a chance B&N and Spring Design could end up simultaneously fighting each other in one case while taking on Amazon as allies in another, which would be... messy. We'll see what happens -- while we've no doubt Barnes & Noble will put up a serious fight if it comes to that, we're curious to see if the shift away from e-reader development to general-use tablets hastens as the market contracts, margins shrink, and the cost of litigation becomes prohibitive. The ball's very definitely in Amazon's court now -- stay tuned.A handheld electronic device comprising: a housing; an electronic paper display disposed in the housing and having a first surface area; and a liquid crystal display (LCD) disposed in the housing proximate the electronic paper display, the LCD having a second surface area that is smaller than the first surface area of the electronic paper display.