Patent ID: 11871603
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Surface technology, coating (Chemistry)
Classification: CPC H  B  Y | IPC B  H

Claim 0:
1. A display device comprising:
a display panel;
a panel protective film disposed below the display panel; and
a first adhesive layer disposed between the display panel and the panel protective film,
wherein under a setting in which a test speed of a tensile test of the panel protective film is 5 millimeters per minute, and Young's modulus of the panel protective film is measured in a range of strain in which strain of the panel protective film is 0.05 percent to 0.5 percent, the panel protective film has the Young's modulus of 4324 megapascals to 4792 megapascals at 25 degrees Celsius, and has the Young's modulus of 3646 megapascals to 3924 megapascals at 85 degrees Celsius so that a deformation in a folding area of the display device is reduced,
wherein, at 210 degrees Celsius, stress of a yielding point of the panel protective film is 29.97 megapascals to 31.34 megapascals, and strain of the yielding point of the panel protective film is 1.19 percent to 1.26 percent.