US 11,807,784 B2
Protective tape and display device including the same
Youngeun Oh, Hwaseong-si (KR); and Sodam Ahn, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Oct. 16, 2019, as Appl. No. 16/655,160.
Claims priority of application No. 10-2019-0004672 (KR), filed on Jan. 14, 2019.
Prior Publication US 2020/0224061 A1, Jul. 16, 2020
Int. Cl. C09J 7/25 (2018.01); B32B 7/12 (2006.01); B32B 27/36 (2006.01); B32B 27/40 (2006.01); C09J 7/30 (2018.01); G02B 1/14 (2015.01); G02B 6/32 (2006.01); G06F 1/16 (2006.01); G09F 9/30 (2006.01); H05K 5/00 (2006.01); H05K 5/03 (2006.01)
CPC C09J 7/255 (2018.01) [B32B 7/12 (2013.01); B32B 27/36 (2013.01); B32B 27/40 (2013.01); C09J 7/25 (2018.01); C09J 7/30 (2018.01); G02B 1/14 (2015.01); G02B 6/325 (2013.01); G06F 1/1616 (2013.01); G06F 1/1641 (2013.01); G09F 9/301 (2013.01); H05K 5/0017 (2013.01); H05K 5/03 (2013.01); B32B 2307/732 (2013.01); B32B 2457/20 (2013.01); C09J 2433/00 (2013.01); C09J 2467/006 (2013.01); C09J 2475/006 (2013.01); G06F 1/1652 (2013.01); G06F 2200/1634 (2013.01); Y10T 428/28 (2015.01)] 9 Claims
OG exemplary drawing
 
1. A display device comprising:
a display module foldable about a first bending axis and a second bending axis spaced apart from each other; and
a protective tape disposed on the display module and including a polymer film and an adhesive layer disposed between the polymer film and the display module,
wherein:
the adhesive layer has a storage modulus at −20° C. of 30 KPa to 100 KPa, and has a creep value of 100% to 800% when a load of 3 N is maintained for 2 hours at room temperature;
the display device is in-foldable about the first bending axis and in-foldable and out-foldable about the second bending axis; and
a first radius of curvature of the first bending axis is smaller than a second radius of curvature of the second bending axis.