US 12,481,324 B2
Inward foldable screen electronic device
Chengling Lv, Dongguan (CN); Wenhong Chen, Shenzhen (CN); and Cong Huang, Dongguan (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Appl. No. 18/003,641
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
PCT Filed Jun. 26, 2021, PCT No. PCT/CN2021/102577
§ 371(c)(1), (2) Date Dec. 28, 2022,
PCT Pub. No. WO2022/001907, PCT Pub. Date Jan. 6, 2022.
Claims priority of application No. 202010605305.0 (CN), filed on Jun. 29, 2020.
Prior Publication US 2023/0240119 A1, Jul. 27, 2023
Int. Cl. H10K 59/80 (2023.01); G06F 1/16 (2006.01); H05K 5/02 (2006.01); H10K 102/00 (2023.01); H10K 77/10 (2023.01)
CPC G06F 1/1652 (2013.01) [H05K 5/0226 (2013.01); H10K 59/873 (2023.02); H10K 77/111 (2023.02); H10K 2102/311 (2023.02)] 20 Claims
OG exemplary drawing
 
1. An inward foldable screen electronic device, comprising:
a first housing;
a second housing;
a hinge coupled to the first housing and the second housing, wherein the first housing configured to rotate rotates relative to the second housing using the hinge; and
a flexible display comprising:
a bending region;
a flat region connected to the bending region;
a first side of the flexible display that is away from the hinge;
an encapsulation layer located on the first side;
a light-emitting layer;
a substrate;
a base film; and
a support sheet having a complete surface,
wherein the encapsulation layer, the light-emitting layer, the substrate, the base film, and the support sheet are sequentially stacked,
wherein the flexible display is mounted on the first housing and the second housing,
wherein when the first housing and the second housing are closed, the flexible display is bent and accommodated between the first housing and the second housing, and
wherein at least one of a thickness of the base film is 15 μm (micrometers) to 25 μm, a modulus of the base film is 3 GPa (gigapascals) to 5 GPa, or a thickness of the support sheet is 0.02 mm (millimeters) to 0.03 mm so that, when the flexible display is in a bent state, a neutral layer of a region that is of the bending region and that is adjacent to the flat region is located on a second side that is of an interface between the encapsulation layer and the light-emitting layer and that is away from the encapsulation layer.