US 11,851,589 B2
Adhesive composition for foldable display, adhesive film using same, and foldable display comprising
Hee Song, Daejeon (KR); Hyon Gyu Park, Daejeon (KR); Byungsu Park, Daejeon (KR); Hyun Cheol Kim, Daejeon (KR); and Hui Je Lee, Daejeon (KR)
Assigned to LG CHEM, LTD., Seoul (KR)
Appl. No. 16/766,359
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Feb. 1, 2019, PCT No. PCT/KR2019/001433
§ 371(c)(1), (2) Date May 22, 2020,
PCT Pub. No. WO2019/151822, PCT Pub. Date Aug. 8, 2019.
Claims priority of application No. 10-2018-0013378 (KR), filed on Feb. 2, 2018.
Prior Publication US 2020/0377768 A1, Dec. 3, 2020
Int. Cl. C09J 133/08 (2006.01); C09J 11/04 (2006.01); C09J 11/06 (2006.01)
CPC C09J 133/08 (2013.01) [C09J 11/04 (2013.01); C09J 11/06 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An adhesive film formed from a curable composition for a foldable display comprising:
a thermocurable resin;
an ionic salt; and
a crosslinking agent,
wherein the adhesive film has a storage modulus of 104 Pa to 106 Pa at −30° C. and 60° C.,
wherein the adhesive film has a relative dielectric constant of at least 4 at 25° C., 60 RH % and 100 KHz,
wherein the adhesive film has an adhesive strength of 879.4-949.4 gf/in,
wherein the thermocurable resin includes a unit derived from ethylhexyl acrylate and a unit derived from acrylic acid, the unit derived from ethylhexyl acrylate is included in 97 parts by weight to 99 parts by weight; and the unit derived from acrylic acid is included in 1 parts by weight to 3 parts by weight, with respect to 100 parts by weight of the thermocurable resin.