South Korea's tech giant Samsung Electronics Co. said Friday it will make efforts to tap deeper into the U.S. Ultra HD (UHD) TV market and roll out customized product lineups for consumers there. The world's No. 1 maker of flat-screen TVs said it will launch sales of curved UHD TVs sized between 55-105 inches this year, along with other models such as 55-to-85 inch flat UHD TVs, and 55-65 inch curved full HD LED TVs, optimized for U.S. consumers.