ELASTIC MEMBER AND DISPLAY DEVICE COMPRISING SAME

Abstract

An elastic member, according to one embodiment, comprises: a first layer comprising a first region and a second region; and a second layer on the first layer, wherein the first region is defined as a folding region, the second region is defined as an unfolding region, the first layer is disposed on a second region of the second layer, a pattern part comprising a plurality of holes or grooves is disposed in at least one region among a first region and the second region of the second layer, and the second layer is thicker than the first layer.

Description

Claims

1. An elastic member including a first region and a second region, the elastic member comprising: a first layer; and a second layer on the first layer,wherein the first region is defined as a folding region, the second region is defined as an unfolding region,a pattern part including a plurality of holes or grooves is disposed in at least one of the first region and the second region of the first layer,the first layer and the second layer include a metal,a thermal conductivity of the first layer is greater than that of the second layer, anda yield strength of the second layer is greater than that of the first layer.

2-20. (canceled)

21. The elastic member of claim 1, wherein the thermal conductivity of the first layer is 20 W/mK or more, and the yield strength of the second layer is 0.7 GPa or more.

22. The elastic member of claim 1, wherein a thickness of the first layer is greater than that of the second layer.

23. The elastic member of claim 1, wherein the first layer and the second layer are in direct contact with each other.

24. The elastic member of claim 23, wherein a diffusion part is disposed at an interface between the first layer and the second layer, and the diffusion part includes a material of the first layer and a material of the second layer.

25. The elastic member of claim 1, wherein an adhesive layer is disposed between the first layer and the second layer.

26. The elastic member of claim 25, wherein a thickness of the adhesive layer is smaller than that of the first layer and greater than or equal to that of the second layer.

27. The elastic member of claim 25, wherein the adhesive layer includes metal particles.

28. The elastic member of claim 1, wherein the pattern part has a hole or a groove shape.

29. The elastic member of claim 1, further comprising at least one of a first protrusion and a second protrusion that are disposed at an edge of the second region.

30. The elastic member of claim 1, wherein the thickness of the first layer is 80 µm to 150 µm, and the thickness of the second layer is 10 µm to 50 µm.

31. The elastic member of claim 1, wherein the thickness of the second layer is 10% to 40% of a total thickness of the elastic member.

32. The elastic member of claim 1, wherein the pattern part is formed by partially etching the second layer.

33. The elastic member of claim 1, further comprising a third layer disposed on the second layer, a pattern part including a plurality of holes or grooves is disposed in at least one of the first region and the second region of the third layer, the yield strength of the second layer is greater than that of the third layer, anda thermal conductivity of the third layer is greater than that of the second layer.

34. The elastic member of claim 33, wherein the second layer and the third layer are in direct contact with each other.

35. The elastic member of claim 33, wherein a thickness of the third layer is greater than that of the second layer.

36. A display device comprising: the elastic member of claim 1; anda panel disposed on the elastic member and including at least one of a display panel and a touch panel.

37. The display device of claim 36, further comprising a protective layer disposed under the elastic member, wherein an area of the protective layer is smaller than a sum of areas of the first region and the second region of the elastic member, anda thickness of the protective layer is smaller than that of the elastic member.

38. The display device of claim 36, further comprising a planarization layer disposed between the elastic member and the panel.

39. The display device of claim 37, wherein the protective layer includes copper particles, and the protective layer is disposed in a size of 80% to 90% of an area of the elastic member.