US 12,238,959 B2
Rollable display device
Yuan-Lin Wu, Miao-Li County (TW); and Kuan-Feng Lee, Miao-Li County (TW)
Assigned to InnoLux Corporation, Miao-Li County (TW)
Filed by InnoLux Corporation, Miao-Li County (TW)
Filed on Apr. 29, 2022, as Appl. No. 17/732,533.
Claims priority of application No. 202110610139.8 (CN), filed on Jun. 1, 2021.
Prior Publication US 2022/0384762 A1, Dec. 1, 2022
Int. Cl. B32B 23/08 (2006.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); B32B 27/28 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); G02B 5/30 (2006.01); G09F 9/30 (2006.01); H01L 25/16 (2023.01); H10K 50/844 (2023.01); H10K 50/86 (2023.01); H10K 59/122 (2023.01); H10K 77/10 (2023.01); H10K 102/00 (2023.01)
CPC H10K 50/844 (2023.02) [B32B 7/12 (2013.01); B32B 23/08 (2013.01); B32B 27/08 (2013.01); B32B 27/281 (2013.01); B32B 27/306 (2013.01); B32B 27/308 (2013.01); B32B 27/325 (2013.01); B32B 27/36 (2013.01); G09F 9/301 (2013.01); H01L 25/167 (2013.01); H10K 50/86 (2023.02); B32B 2270/00 (2013.01); B32B 2307/202 (2013.01); B32B 2307/40 (2013.01); B32B 2307/412 (2013.01); B32B 2307/42 (2013.01); B32B 2307/546 (2013.01); B32B 2457/206 (2013.01); B32B 2457/208 (2013.01); G02B 5/3083 (2013.01); H10K 59/122 (2023.02); H10K 77/111 (2023.02); H10K 2102/311 (2023.02); H10K 2102/351 (2023.02)] 11 Claims
OG exemplary drawing
 
1. A rollable display device having a normal display status and an expanded display status, comprising:
a display layer having a greater display area when the rollable display device being in the expanded display status than in the normal display status; and
an optical layer attached to the display layer through an adhesive, the optical layer comprising a base layer and a functional layer disposed between the base layer and the adhesive, wherein the functional layer is in contact with the adhesive,
wherein an edge of the adhesive is a curved shape having a radius of curvature, and the radius of curvature is greater than or equal to 0.4 times of a thickness of the adhesive and less than or equal to 0.6 times of the thickness of the adhesive.