DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF
According to one embodiment, a display device includes a resinous substrate having flexibility, a circuit layer including a plurality of insulating layers provided over a display area and a surrounding area, a first organic insulating layer provided on the circuit layer, a first inorganic insulating layer provided on the first organic insulating layer, and a first partition including a first lower portion provided on the first inorganic insulating layer and a first upper portion which is provided on the first lower portion and protrudes from a side surface of the lower portion. The circuit layer has a belt-like area in which at least one of the plurality of insulating layers is lost in a belt-like shape. The first partition is provided in the belt-like area.
1 . A display device comprising:
a resinous substrate having flexibility;
a circuit layer including a plurality of insulating layers provided over a display area which displays an image and a surrounding area located on an external side relative to the display area on the resinous substrate;
a first organic insulating layer provided over the display area and the surrounding area on the circuit layer;
a first inorganic insulating layer provided over the display area and the surrounding area on the first organic insulating layer; and
a first partition comprising a first lower portion provided on the first inorganic insulating layer and a first upper portion which is provided on the first lower portion and protrudes from a side surface of the first lower portion in the surrounding area, wherein
the circuit layer has a belt-like area in which at least one of the plurality of insulating layers is lost in a belt-like shape, and
the first partition is provided in the belt-like area.
2 . The display device of claim 1 , wherein
the first partition is provided so as to intersect with the belt-like area.
3 . The display device of claim 1 , wherein
the first lower portion is formed of a conductive material, and is electrically connected to a terminal having a common potential.
4 . The display device of claim 1 , wherein
the circuit layer includes a second organic insulating layer, and
the first organic insulating layer and the second organic insulating layer are in contact with each other in the belt-like area.
5 . The display device of claim 4 , wherein
the plurality of insulating layers include a plurality of second inorganic insulating layers provided between the resinous substrate and the second organic insulating layer, and
at least one of the second inorganic insulating layers is lost in a belt-like shape in the belt-like area.
6 . The display device of claim 5 , wherein
the resinous substrate and the second organic insulating layer are in contact with each other in the belt-like area.
7 . The display device of claim 1 , wherein
the circuit layer includes a metal line and a second organic insulating layer, and
the metal line is provided between the first organic insulating layer and the second organic insulating layer in the belt-like area.
8 . The display device of claim 1 , further comprising:
an organic layer which is provided on the first partition and the first inorganic insulating layer in the belt-like area and includes a light emitting layer; and
an upper electrode provided on the organic layer, wherein
the organic layer and the upper electrode are surrounded by the first partition in plan view, and
the upper electrode is in contact with the first partition.
9 . The display device of claim 8 , further comprising:
a cap layer provided on the upper electrode; and
a sealing layer which is formed of an inorganic insulating material and covers the cap layer and the first partition.
10 . The display device of claim 1 , further comprising:
a lower electrode provided on the first organic insulating layer and overlapping an aperture of the first inorganic insulating layer in the display area;
an organic layer which is provided on the lower electrode in the aperture and includes a light emitting layer; and
an upper electrode provided on the organic layer.
11 . The display device of claim 10 , further comprising
a second partition comprising a second lower portion which is provided on the first inorganic insulating layer and is formed of a conductive material and a second upper portion which is provided on the second lower portion and protrudes from a side surface of the second lower portion in the display area, wherein
the lower electrode, the organic layer and the upper electrode are surrounded by the second partition in plan view, and
the upper electrode is in contact with the second partition.
12 . The display device of claim 11 , further comprising:
a cap layer provided on the upper electrode; and
a sealing layer which is formed of an inorganic insulating material and covers the cap layer and the second partition.
13 . The display device of claim 11 , wherein
the first lower portion and the second lower portion are formed of a same material, and
the first upper portion and the second upper portion are formed of a same material.
14 . A display device comprising
a display panel which comprises a display area displaying an image and a surrounding area located on an external side relative to the display area and is bent in a belt-like area, wherein
the display panel comprises:
a resinous substrate having flexibility;
a first organic insulating layer provided over the display area and the surrounding area above the resinous substrate;
a first inorganic insulating layer provided over the display area and the surrounding area on the first organic insulating layer; and
a first partition comprising a first lower portion provided on the first inorganic insulating layer and a first upper portion which is provided on the first lower portion and protrudes from a side surface of the first lower portion in the belt-like area.
15 . The display device of claim 14 , wherein
the belt-like area is located in the surrounding area.
16 . The display device of claim 14 , wherein
the belt-like area intersects with the display area.
17 . A manufacturing method of a display device, the method comprising:
forming a circuit layer including a plurality of insulating layers over a display area which displays an image and a surrounding area located on an external side relative to the display area on a resinous substrate having flexibility;
forming a first organic insulating layer over the display area and the surrounding area on the circuit layer;
forming a first inorganic insulating layer over the display area and the surrounding area on the first organic insulating layer; and
forming a first partition comprising a first lower portion located on the first inorganic insulating layer and a first upper portion which is located on the first lower portion and protrudes from a side surface of the first lower portion in the surrounding area, wherein
the circuit layer has a belt-like area in which at least one of the plurality of insulating layers is lost in a belt-like shape, and
the first partition is located in the belt-like area.
18 . The manufacturing method of claim 17 , further comprising, after forming the first partition,
forming an organic layer which includes a light-emitting layer on the first partition and the first inorganic insulating layer, and
forming an upper electrode on the organic layer, wherein
each of the organic layer and the upper electrode is formed by vapor deposition using the first partition as a mask.
19 . The manufacturing method of claim 18 , further comprising, after forming the upper electrode,
forming a cap layer on the upper electrode by performing vapor deposition using the first partition as a mask, and
forming a sealing layer which covers the cap layer and the first partition by using an inorganic insulating material.
20 . The manufacturing method of claim 19 , further comprising, after forming the sealing layer,
forming a patterned resist on the sealing layer, and
removing part of the sealing layer, part of the cap layer, part of the upper electrode and part of the organic layer in series in the display area by performing etching using the resist as a mask, wherein
the sealing layer is covered with the resist in the belt-like area.