Patent ID: 11950445
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H  Y | IPC G  H

Claim 0:
1. A foldable display screen, comprising:
a display panel;
a first optical adhesive layer on the display panel;
a first cover protection layer on a side of the first optical adhesive layer away from the display panel;
a second optical adhesive layer on a side of the first cover protection layer away from the first optical adhesive layer; and
a second cover protection layer on a side of the second optical adhesive layer away from the first cover protection layer,
wherein, at an operating temperature, an elastic modulus of the second optical adhesive layer is smaller than an elastic modulus of the first optical adhesive layer,
the elastic modulus of the second optical adhesive layer at the temperature of 20 degrees Celsius ranges from 20 to 40 Kpa, and the elastic modulus of the second optical adhesive layer at the temperature of 60 degrees Celsius ranges from 5 to 25 Kpa,
wherein the elastic modulus of the first optical adhesive layer at the temperature of 20 degrees Celsius ranges from 40 to 60 Kpa, and the elastic modulus of the first optical adhesive layer at the temperature of 60 degrees Celsius ranges from 20 to 40 Kpa,
the foldable display screen further comprises:
a touch layer between the display panel and the first optical adhesive layer,
wherein a neutral layer of the foldable display screen comprises at least one of the display panel and the touch layer.