Display device
A display device includes: a display panel; a driver IC positioned on the display panel; a supporting member positioned under the display panel; and a lower adhesive layer positioned between the display panel and the supporting member. A storage modulus of the lower adhesive layer is about 0.020 MPa to about 0.030 MPa at about 1 Hz and about 140° C.
1. A display device comprising:
a display panel;
a driver integrated circuit (IC) positioned on the display panel;
a supporting member positioned under the display panel; and
a lower adhesive layer positioned between the display panel and the supporting member,
wherein a storage modulus of the lower adhesive layer is about 0.020 megapascals (MPa) to about 0.030 MPa at 1 hertz (Hz) and 140 degrees in Celsius (° C.),
wherein the supporting member includes:
a first supporting member positioned under the display panel, and
a second supporting member positioned under the first supporting member, and
the lower adhesive layer includes:
a fourth adhesive layer positioned between the display panel and the first supporting member, and
a fifth adhesive layer positioned between the first supporting member and the second supporting member.
2. The display device of claim 1 , wherein
the storage modulus of the lower adhesive layer is about 0.08 MPa to about 0.2 MPa at 1 Hz and −20° C.
3. The display device of claim 2 , wherein
the storage modulus of the lower adhesive layer is about 0.035 MPa to about 0.050 MPa at 1 Hz and 25° C.
4. The display device of claim 3 , wherein
a thickness of the lower adhesive layer is about 15 micrometers (μm) to about 25 μm.
5. The display device of claim 1 , wherein
the display panel includes a display area and a peripheral area, and
the driver IC is positioned in the peripheral area.
6. The display device of claim 5 , further comprising
an anisotropic conductive film positioned between the display panel and the driver IC,
wherein the driver IC is attached to the display panel by the anisotropic conductive film.
7. The display device of claim 6 , wherein
a process of attaching the driver IC to the display panel is performed for 5 seconds at a temperature of 190° C. and a pressure of about 10 MPa to 40 MPa.
8. The display device of claim 1 , further comprising:
a protection member positioned on the display panel;
a window positioned on the protection member;
a window protection member positioned on the window;
a first adhesive layer positioned between the window protection member and the window;
a second adhesive layer positioned between the window and the protection member; and
a third adhesive layer positioned between the protection member and the display panel.
9. The display device of claim 1 , wherein
the supporting member further includes:
a third supporting member positioned under the second supporting member, and
the lower adhesive layer further includes:
a sixth adhesive layer positioned between the second supporting member and the third supporting member.
10. The display device of claim 9 , wherein
storage modulus of the fourth adhesive layer is about 0.020 MPa to about 0.030 MPa at 1 Hz and 140° C.
11. The display device of claim 10 , wherein
the storage modulus of the fourth adhesive layer is about 0.08 MPa to about 0.2 MPa at 1 Hz and −20° C.
12. The display device of claim 11 , wherein
the storage modulus of the fourth adhesive layer is about 0.035 MPa to about 0.050 MPa at 1 Hz and 25° C.
13. The display device of claim 12 , wherein
a thickness of the fourth adhesive layer is about 15 μm to about 25 μm.
14. The display device of claim 9 , wherein
the first supporting member and the second supporting member include a polymer resin, and
the third supporting member includes glass, plastic, or metal.
15. The display device of claim 14 , wherein
the third supporting member includes a folding structure, and
the folding structure is one of a pattern portion where an opening is defined therein, a protrusions and depressions area, and links connected to each other to be rotatable.
16. The display device of claim 1 , wherein
the lower adhesive layer is made of a photocurable adhesive.
17. The display device of claim 16 , wherein
the lower adhesive layer includes an acryl resin with a photoinitiator.
18. The display device of claim 1 , wherein
the lower adhesive layer is made of a thermosetting adhesive.
19. The display device of claim 18 , wherein
the lower adhesive layer is made of a liquid adhesive that hardens when heat of about 100° C. to about 140° C. is applied.
20. The display device of claim 1 , wherein
the display device is a flexible display device.