Stretchable device
According to an aspect, a stretchable device includes: a resin base member; an array layer provided to the resin base member; and a pair of resin layers that sandwich the resin base member and the array layer from both sides in a thickness direction in which the resin base member and the array layer are disposed, the resin layers being made of resin having lower elastic modulus than that of the resin base member. The resin base member includes: bodies separated from each other in a direction orthogonal to the thickness direction; and hinges coupling the bodies while meandering. The array layer includes functional elements overlapping the bodies when viewed in the thickness direction. The resin layers are provided with first rigid parts having higher elastic modulus than that of the resin that forms the resin layers. The first rigid parts overlap the bodies when viewed in the thickness direction.
1 . A stretchable device comprising:
a resin base member;
an array layer provided to the resin base member; and
a pair of resin layers that sandwich the resin base member and the array layer from both sides in a thickness direction in which the resin base member and the array layer are disposed, the resin layers being made of resin having lower elastic modulus than that of the resin base member, wherein
the resin base member includes:
a plurality of bodies separated from each other in a direction orthogonal to the thickness direction; and
a plurality of hinges that couple the bodies while meandering,
the array layer includes functional elements overlapping the bodies when viewed in the thickness direction,
the resin layers are provided with first rigid parts having higher elastic modulus than that of the resin that forms the resin layers, and
the first rigid parts overlap the bodies when viewed in the thickness direction.
2 . The stretchable device according to claim 1 , wherein
the pair of resin layers includes:
a first resin layer disposed opposite to the array layer with respect to the resin base member; and
a second resin layer disposed opposite to the resin base member with respect to the array layer, and
each of the first rigid parts is a glass piece provided to the first resin layer.
3 . The stretchable device according to claim 2 , wherein
the glass piece has an outer periphery surface formed in a rectangular shape when viewed in the thickness direction, and
a corner of the outer peripheral surface is chamfered.
4 . The stretchable device according to claim 3 , wherein the resin base member is provided with second rigid parts made of metal material and overlapping the bodies and the first rigid parts when viewed in the thickness direction.
5 . The stretchable device according to claim 2 , wherein the resin base member is provided with second rigid parts made of metal material and overlapping the bodies and the first rigid parts when viewed in the thickness direction.
6 . The stretchable device according to claim 1 , wherein each of the first rigid parts is made of resin having higher elastic modulus than those of the resin layers and the resin base member.
7 . The stretchable device according to claim 1 , wherein each of the first rigid parts is disposed on an inner side than the outer shape of a corresponding one of the bodies when viewed in the thickness direction.
8 . The stretchable device according to claim 7 , wherein each of the first rigid parts overlaps the entire functional element when viewed in the thickness direction.
9 . The stretchable device according to claim 1 , wherein each of the first rigid parts overlaps the entire functional element when viewed in the thickness direction.