The quest for TV technology leadership took a new turn at the Consumer Electronics Show (CES) in Las Vegas this week, as major brands moved away from acronym wars and incremental improvements, towards dramatic shifts in formats and built-in technology. Samsung and LG Electronics led the charge, respectively unveiling a modular "shape-shifting" TV and a roll-up TV. Hisense and Skyworth unveiled ultra-thin TVs with speakers built into the display panel itself, and Sony produced standard TVs in 85-inch and 98-inch formats, in pursuit of a goal to push for super-large screens to become the norm in living rooms. Samsung also debuted an 85-inch TV, as it vied with Sony for dominance of the emerging 8K standard, which represents a 16-fold increase in picture resolution over high-definition displays. As the largest tech expo in the world by floor space - this year it covered more than 750,000m - CES sets the technology agenda for the year, and the evolution of TV in turn tends to define CES...

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