US 11,987,041 B2
Display module and display device
Liming Dong, Beijing (CN); Shiming Shi, Beijing (CN); Lu Liu, Beijing (CN); Lijuan Zhao, Beijing (CN); and Zhao Li, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/299,012
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Aug. 26, 2020, PCT No. PCT/CN2020/111472
§ 371(c)(1), (2) Date Jun. 2, 2021,
PCT Pub. No. WO2022/040990, PCT Pub. Date Mar. 3, 2022.
Prior Publication US 2022/0314579 A1, Oct. 6, 2022
Int. Cl. B32B 7/12 (2006.01); B32B 1/00 (2006.01); H05K 5/00 (2006.01); H05K 5/03 (2006.01)
CPC B32B 7/12 (2013.01) [B32B 1/00 (2013.01); H05K 5/0017 (2013.01); H05K 5/03 (2013.01); B32B 2307/42 (2013.01); B32B 2307/546 (2013.01); B32B 2307/732 (2013.01); B32B 2457/20 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A display module, comprising: a flexible panel, a first group of film layers attached to a light-emitting side of the flexible panel via a first group of adhesive layers, and a second group of film layers attached, via a second group of adhesive layers, to a non-light-emitting side of the flexible panel away from the light-emitting side; wherein
the display module is capable of being folded to a curved plate, such that at least a portion of an orthographic projection of the display module on a first plane perpendicular to the curved plate has a shape of a water-drop profile comprising two neck portions and a body portion, where the two neck portions are formed on both sides of the body portion,
the body portion is an arc line having a curvature radius in a range of 4±0.5 mm,
the first group of film layers comprises a polarizer and a cover plate, the first group of adhesive layers comprises a first sub-adhesive layer and a second sub-adhesive layer, and the first sub-adhesive layer, the polarizer, the second sub-adhesive layer and the cover plate are sequentially stacked on the light-emitting side of the flexible panel,
the second group of film layers comprises a bottom film and a support film, the second group of adhesive layers comprise a third sub-adhesive layer and a fourth sub-adhesive layer, and the third sub-adhesive layer, the bottom film, the fourth sub-adhesive layer, and the support film are sequentially stacked on the non-light-emitting side of the flexible panel,
both of the second sub-adhesive layer and the fourth sub-adhesive layer are flexible layers and made of a same material, and
each of the second sub-adhesive layer and the fourth sub-adhesive layer has a modulus in a range of 55 KPa±10 KPa at a temperature of 25° C., each of the second sub-adhesive layer and the fourth sub-adhesive layer has a modulus in a range of 120 KPa±10 KPa at a temperature of −20° C., and each of the second sub-adhesive layer and the fourth sub-adhesive layer has a modulus in a range of 35 KPa±5 Kpa at a temperature of 60° C.