Samsung Display Co., Ltd.

Chansong Lee

Jihwa Lee

Minju Oh

Jinkyu Kim

HyoungWook Lee

Jeongkug Lee

A display module includes a display panel, a plurality of functional layers disposed on the display panel, and an adhesive layer disposed between the plurality of functional layers or between one of the plurality of functional layers and the display panel. The adhesive layer has a storage modulus equal to or greater than about 0.02 megapascal (MPa) and equal to or smaller than about 0.045 MPa at a temperature of about 60 degrees Celsius (° C.) and has creep characteristics equal to or greater than about 10 percent (%) and equal to or smaller than about 30%.

Display module

A display module includes a display panel, a plurality of functional layers disposed on the display panel, and an adhesive layer disposed between the plurality of functional layers or between one of the plurality of functional layers and the display panel. The adhesive layer has a storage modulus equal to or greater than about 0.02 megapascal (MPa) and equal to or smaller than about 0.045 MPa at a temperature of about 60 degrees Celsius (&#xb0; C.) and has creep characteristics equal to or greater than about 10 percent (%) and equal to or smaller than about 30%.

A foldable display device includes a display panel, a polarizing member on the display panel, a window on the polarizing member, a first adhesive member between the display panel and the polarizing member, and a second adhesive member between the polarizing member and the window. In a first state, the display panel, the polarizing member, the window, the first adhesive member, and the second adhesive member are bent along a bending axis such that the window is closer to the bending axis than the display panel is. The first and second adhesive members have a storage modulus in a range of about 5&#xd7;10Pa to about 5&#xd7;10Pa at about &#x2212;25&#xb0; C. The second adhesive member has a storage modulus in a range of about 4.5&#xd7;10Pa to about 6.5&#xd7;10Pa at about 60&#xb0; C. The first adhesive member has a stress-relaxation ratio greater than about 40 and less than about 50.

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Suwon-si, South Korea

Chansong Lee