US 12,437,689 B2
Flexible display device
Eun Roh, Seoul (KR); Nohjin Myung, Paju-si (KR); and Jieun Lee, Busan (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG DISPLAY CO., LTD., Seoul (KR)
Filed on Nov. 23, 2021, as Appl. No. 17/534,143.
Claims priority of application No. 10-2020-0175076 (KR), filed on Dec. 15, 2020.
Prior Publication US 2022/0189349 A1, Jun. 16, 2022
Int. Cl. G09G 3/00 (2006.01); B32B 3/30 (2006.01); B32B 7/12 (2006.01); B32B 15/08 (2006.01); G02B 1/11 (2015.01); G02B 1/14 (2015.01)
CPC G09G 3/035 (2020.08) [B32B 3/30 (2013.01); B32B 7/12 (2013.01); B32B 15/08 (2013.01); G02B 1/14 (2015.01); B32B 2262/103 (2013.01); B32B 2307/202 (2013.01); G02B 1/11 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A flexible display device, comprising:
a display panel including a folding area and a non-folding area; and
a back plate which includes a base layer which supports the display panel, below the display panel and includes a plurality of grooves on a bottom surface corresponding to the folding area and a filler which is filled in at least a part of the plurality of grooves,
wherein:
the filler includes a metal fiber;
the base layer is formed of metals;
the filler is attached to each of the plurality of grooves by means of a conductive adhesive layer;
a top surface of the filler is soldered to each of the plurality of grooves by the conductive adhesive layer;
a side surface of the filler is not fixed by the conductive adhesive layer so that the metal fiber of the filler is stretched along a folding direction during a folding; and
the conductive adhesive layer is disposed on a lower part of the base layer, and the filler is disposed on a lower part of the conductive adhesive layer in the folding area.