US 12,324,113 B2
Foldable display device including a foreign material inflow prevention element
YoungJoon Yun, Goyang-si (KR); JiSoon Oh, Goyang-si (KR); Hyeonggwang An, Incheon (KR); ShinSuk Lee, Gimpo-si (KR); and ByeongCheol Lee, Cheongju-si (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Oct. 20, 2022, as Appl. No. 17/970,372.
Claims priority of application No. 10-2021-0187582 (KR), filed on Dec. 24, 2021.
Prior Publication US 2023/0209752 A1, Jun. 29, 2023
Int. Cl. H05K 5/02 (2006.01); F16C 11/04 (2006.01)
CPC H05K 5/0226 (2013.01) [F16C 11/04 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A foldable display device, comprising:
a first support plate;
a second support plate;
a display panel disposed on the first support plate and the second support plate; and
a hinge assembly disposed between the first support plate and the second support plate, the hinge assembly including:
a hinge arm;
a gear arm coupled to the hinge arm;
an inner frame disposed under the hinge arm and the gear arm and being fixed to at least one of the hinge arm and the gear arm;
a hinge housing accommodating the inner frame, the hinge arm, and the gear arm; and
a foreign material inflow prevention element disposed between the hinge housing and the inner frame and directly connected to the hinge arm to operate together with movement of the hinge arm,
wherein the hinge arm includes a first hinge arm and a second hinge arm rotatably connected to the first hinge arm,
wherein the foreign material inflow prevention element includes a first foreign material inflow prevention element on a first lateral side and a second foreign material inflow prevention element on a second lateral side,
wherein a center of rotation of the first foreign material inflow prevention element coincides with a center of rotation of the first hinge arm, and
wherein a center of rotation of the second foreign material inflow prevention element coincides with a center of rotation of the second hinge arm.