ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,484,434, issued on Nov. 25, was assigned to LG DISPLAY Co. LTD. (Seoul, South Korea).
"Display device including inner and outer rollers" was invented by ByungHee Kim (Anyang-si, South Korea), EunSup Yoon (Paju-si, South Korea), YongSuk Kim (Paju-si, South Korea) and Laebong Jang (Incheon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A display device in one example includes a display unit, an outer roller configured to wind or unwind the display unit and including an inner circumferential surface having a spiral groove, an inner roller disposed in the outer roller and including an outer circumferential surface having a straight groove, a pl...