These displays recently reappeared in Sony Sony Xperia Z Ultra HSPA+ USB after a lengthy absence -- the technology was dropped in due to its high costs -- so it was a pleasant surprise to see it show up on smaller devices so Sony Xperia Z Ultra HSPA+ USB. Each dot measures between 2nm and 10nm. Rather than using a white backlight which passes through RGB filters to create the intended color, the display uses a blue LED that stimulates[…]