公开(公告)号：US20230164248A1

公开(公告)日：2023-05-25

申请号：US17917340

申请日：2020-04-10

Applicant: LG ELECTRONICS INC.

Inventor： Jin Woo PARK ,  Ara KIM ,  Hang Seok KIM ,  Min Chul SHIN ,  Sung Lyong CHA

IPC: H04M1/02

CPC classification number: H04M1/0237 ,  H04M1/0268 ,  H04M2201/08 ,  H04M2201/38

Abstract: A flexible display device is disclosed. The flexible display device includes a first body, a second body that moves in a first direction with respect to the first body, and a flexible display that varies according to the movement of the second body. Either one of the first body and the second body has coupled thereto a plurality of spherical rolling balls arranged in the first direction, and the other one has formed therein rolling grooves, in the form of concave grooves having a constant cross-section, in the first direction to allow the rolling balls to move in contact with same. In embodiments of the present invention, the movement of the second body is facilitated by a point contact of the rolling balls and the rolling grooves, and external exposure of an element for slidable movement of the second body may be minimized.

公开(公告)号：US20220303373A1

公开(公告)日：2022-09-22

申请号：US17633167

申请日：2019-08-06

Applicant: LG ELECTRONICS INC.

Inventor： Timothy KANG ,  In Su SONG ,  Sung Lyong CHA

IPC: H04M1/02

Abstract: Provided is a roll-slide mobile terminal in which a front area of a flexible display unit is variable, for solving a problem of an electric field portion narrowing due to a structure for the variation of the front area, the roll-slide mobile terminal comprising a first frame, a second frame sliding in a first direction with respect to the first frame, the flexible display unit, a first guide rail fixed to the first frame to be parallel to the front area of the flexible display unit and provided in a second direction perpendicular to the first direction, a first slider moving in the second direction along the first guide rail, and a link rotatably fastened to each of the first slider and the second frame to move the second frame according to movement of the first slider.