Metal support and flexible display device
A bendable region is capable of bending in a first direction, a plurality of columns of hollowed-out parts arranged side by side along the first direction are arranged in the patterned region, each column of the hollowed-out parts includes a plurality of openings arranged at intervals along the second direction, and the patterned region includes two first edges arranged opposite to each other in the first direction, the hollowed-out part near the first edge is arc-shaped, convex sides of two arcs face each other, and the first direction and the second direction are perpendicular.
1 . A metal support comprising a bendable region, a non-bendable region, and at least one patterned region covering at least the bendable region, wherein a plurality of columns of hollowed-out parts arranged side by side along a first direction are arranged in the patterned region, each column of the hollowed-out parts comprises a plurality of openings arranged at intervals along a second direction, the patterned region comprises two first edges arranged opposite to each other in the first direction, hollowed-out parts in a column among the plurality of columns closest to one of the two edges are each centered along a first arc, hollowed-out parts in a column among the plurality of columns closest to the other of the two edges are each centered along a second arc, convex sides of the first arc and the second arc are arranged opposite to each other, wherein the first direction and the second direction are perpendicular.
2 . The metal support according to claim 1 , wherein the metal support is arranged within a flexible display device.
3 . The metal support according to claim 1 , wherein the bendable region includes a first center line extending in the first direction and a second center line extending in the second direction, the plurality of columns of the hollowed-out parts are symmetrically distributed about the first center line, and symmetrically distributed about the second center line, and the first center line is perpendicular to the second center line.
4 . The metal support according to claim 3 , wherein the metal support comprises a first patterned region at a middle part and a second patterned region symmetrically disposed on opposite sides of the first patterned region in the first direction, the first patterned region comprises at least a first column of hollowed-out parts.
5 . The metal support according to claim 4 , wherein a connecting line of center points of the plurality of openings in each column of the hollowed-out parts in the first patterned region and the second patterned region other than the first column of hollowed-out parts forms an arc line;
wherein the farther a point on the arc line is away from a second centerline along the second direction, the greater the curvature of the point on the arc line is.
6 . The metal support according to claim 5 , wherein each of the plurality of openings is of a strip-shaped structure extending along an extension direction of the hollowed-out part, and the arc line is tangent to a long axis of each of the plurality of openings corresponding to the arc line.
7 . The metal support according to claim 5 , wherein the second patterned region comprises a third patterned region and a fourth patterned region along the first direction, the third patterned region is adjacent to the first patterned region, the first patterned region covers the bendable region, and the third patterned region and the fourth patterned region cover a part of the non-bendable region.
8 . The metal support according to claim 7 , wherein a connection part is arranged between two adjacent openings in each column of the plurality of columns, the plurality of openings in two adjacent columns of the hollowed-out parts is arranged in a staggered manner.
9 . The metal support according to claim 8 , wherein in two adjacent columns of hollowed-out parts located within the same patterned region, one column of the hollowed-out parts comprises a first connection part, the other column of the hollowed-out parts comprises a first opening, and a line connecting the center of the first opening and the center of the first connection part is parallel to the first direction.
10 . The metal support according to claim 8 , wherein one column of the hollowed-out parts in the third patterned region comprises a second connection part, one column of the hollowed-out parts in the first patterned region comprises a second opening, there is a first quarter point on a long axis of the second opening, and a distance between the first quarter point and the nearest long axis endpoint of the second opening is one fourth of a long axis length of the second opening, a line connecting the first quarter point and the center of the second connection part is parallel to the first direction.
11 . The metal support according to claim 8 , wherein one column of the hollowed-out parts in the fourth patterned region comprises a third connection part, one column of the hollowed-out parts in the third patterned region comprises a third opening, there is a second quarter point on a long axis of the third opening, and a distance between the second quarter point and the nearest long axis endpoint of the third opening is one fourth of a long axis length of the third opening, a line connecting the second quarter point and the center of the third connection part is parallel to the first direction.
12 . The metal support according to claim 7 , wherein a length of each of the plurality of openings in the hollowed-out part in the first patterned region in the second direction is a first length, a length of each of the plurality of openings in the hollowed-out parts in the third patterned region in the second direction is a second length, and a length of each of the plurality of openings in the hollowed-out parts in the fourth patterned region in the second direction is a third length; and
the first length is twice as the second length, and the second length is twice as long as the third length.
13 . The metal support according to claim 5 , wherein each of the plurality of openings is of a strip-shaped structure extending along an extension direction of the hollowed-out part, and the arc line coincides with a long axis of each of the plurality of openings corresponding to the arc line,
wherein the plurality of openings in the same column of hollowed-out parts do not have exactly same length.
14 . The metal support according to claim 5 , wherein a width of the plurality of openings in each column of the plurality of columns in the first direction is 0.2 mm and a distance between centers of the hollowed-out parts in two adjacent columns of the plurality of columns in the first direction is 0.4 mm.
15 . The metal support according to claim 1 , wherein the plurality of openings are through holes or semi-through holes.
16 . The metal support according to claim 1 , further comprising an adhesive layer located on the bendable region and the non-bendable region;
wherein the adhesive layer comprises a first surface close to the bendable region and a second surface opposite to the first surface;
a part of the first surface corresponding to the bendable region has a protrusion part for filling the openings, and the second surface is of a planar structure.
17 . The metal support according to claim 1 , wherein a length of the patterned region in the first direction first decreases and then increases along the second direction; or
wherein an arrangement density of the plurality of openings in the patterned region gradually decreases from a center to an edge in the second direction.
18 . The metal support according to claim 1 , wherein the patterned region comprises two second edges oppositely disposed along the second direction, the openings in one column of the plurality of columns comprise first openings traversed by one second edge of the two second edges and second openings not traversed by the one second edge of the two second edges, and the first openings and the second openings are arranged at intervals and alternate along the first direction; or
wherein the patterned region includes two second edges oppositely disposed along the second direction, and the openings, in at least one of the two second edges, of the plurality of columns of the hollowed-out parts are traversed by the same second edge of the two second edges, each of the two second edges is formed as a discontinuous linear shape.
19 . The metal support according to claim 1 , wherein the plurality of openings are filled with elastic materials.
20 . A flexible display device, comprising the metal support of claim 1 and a display panel.