US 11,940,843 B2
Display device including roller
Sangwon Yoon, Seoul (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG DISPLAY CO., LTD., Seoul (KR)
Filed on Aug. 24, 2022, as Appl. No. 17/894,413.
Claims priority of application No. 10-2021-0123140 (KR), filed on Sep. 15, 2021.
Prior Publication US 2023/0080163 A1, Mar. 16, 2023
Int. Cl. G06F 1/16 (2006.01)
CPC G06F 1/1652 (2013.01) 16 Claims
OG exemplary drawing
 
1. A display device comprising:
a display unit; and
a roller configured to wind or unwind the display unit and comprising a flat portion, a first curved portion extending from the flat portion, and a second curved portion extending from the first curved portion toward the flat portion,
wherein a radius of curvature of the first curved portion is larger than a radius of curvature of the second curved portion, and a radius of curvature of the display unit wound around the second curved portion is larger than the radius of curvature of the second curved portion,
wherein the roller comprises:
a main roller having an outer peripheral surface including the first curved portion and the flat portion, the main roller comprising an opening region formed by opening a part of the first curved portion; and
a first auxiliary roller disposed in the opening region and having an outer peripheral surface corresponding to the second curved portion, and
wherein a central shaft of the first auxiliary roller is coupled to two opposite ends of the main roller.