Display device
According to an aspect pf the disclosure, a display device includes a base substrate; a thin film transistor layer provided on the base substrate and including a wiring layer; and a light-emitting element layer provided on the thin film transistor layer and including a plurality of first electrodes, a plurality of functional layers, and a common, second electrode, which are sequentially stacked in such a manner as to correspond to a plurality of subpixels in a display area.
1 . A display device comprising:
a base substrate;
a thin film transistor layer provided on the base substrate and including a wiring layer; and
a light-emitting element layer provided on the thin film transistor layer and including a plurality of first electrodes, a plurality of functional layers, and a common second electrode, which are sequentially stacked, in this stated order, in such a manner as to correspond to a plurality of subpixels in a display area, wherein:
an insular non-display area is provided in the display area,
a through hole extends in a direction of a thickness of the base substrate in the non-display area,
a partition wall is provided in the non-display area such that the partition wall surrounds the through hole,
the partition wall is made of a same material, and provided in a same layer, as the wiring layer,
the wiring layer includes a first metal layer, a second metal layer, and a third metal layer, all of which are sequentially stacked, in this stated order, from a base substrate side toward a light-emitting element layer side,
the partition wall includes:
a wall bottom portion made of a same material, and provided in a same layer, as the first metal layer, and shaped similar to a frame,
a wall middle portion made of a same material, and provided in a same layer, as the second metal layer, and shaped similar to a frame, and
a wall top portion made of a same material, and provided in a same layer, as the third metal layer, and shaped similar to a frame, wherein the wall top portion comprises, on a through hole side, an edge shaped similar to an eave which projects toward the through hole side beyond an edge of the wall middle portion on the through hole side, without reaching an edge of the wall bottom portion on the through hole side, and
the thin film transistor layer includes:
a first inorganic insulating film provided on the light-emitting element layer side of the wiring layer, and
an inorganic insulating layer made of a same material, and provided in a same layer, as the first inorganic insulating film, shaped similar to a frame, and provided on the partition wall.
2 . The display device according to claim 1 , wherein
the plurality of functional layers includes a common functional layer that is common to the plurality of subpixels, and
the common functional layer and the second electrode are provided on the partition wall via the inorganic insulating layer from the display area to the non-display area, and are separated from a portion on the through hole side along the edge of the wall top portion on the through hole side.
3 . The display device according to claim 1 , wherein
the thin film transistor layer includes a second inorganic insulating film provided on the base substrate side of the wiring layer, and
the second inorganic insulating film is provided on the base substrate side of the partition wall toward the through hole side.
4 . The display device according to claim 3 , wherein
a sealing film in which a first inorganic sealing film, an organic sealing film, and a second inorganic sealing film are sequentially stacked, in this stated order, is provided on the light-emitting element layer, and
the first inorganic sealing film is provided in the non-display area such that the first inorganic sealing film is in contact with the common second electrode, and the common second electrode is disposed on the second inorganic insulating film.
5 . The display device according to claim 1 , wherein
the thin film transistor layer includes a second inorganic insulating film provided on the base substrate side of the wiring layer, and
the second inorganic insulating film is provided on the base substrate side of the partition wall so as not to extend beyond the partition wall.
6 . The display device according to claim 5 , wherein the partition wall covers an edge of the second inorganic insulating film on the through hole side.
7 . The display device according to claim 6 , wherein the wall bottom portion covers the edge of the second inorganic insulating film on the through hole side.
8 . The display device according to claim 5 , wherein
a sealing film in which a first inorganic sealing film, an organic sealing film, and a second inorganic sealing film are sequentially stacked, in this stated order, is provided on the light-emitting element layer, and
the first inorganic sealing film is provided in the non-display area such that the first inorganic sealing film is in contact with the base substrate.
9 . The display device according to claim 4 , wherein a frame-shaped inner damming wall is provided in the non-display area to surround the partition wall and to overlap an inner peripheral portion of the organic sealing film.
10 . The display device according to claim 4 , wherein
a frame area is provided around the display area, and
a frame-shaped outer damming wall is provided in the frame area to surround the display area and to overlap an outer peripheral portion of the organic sealing film.
11 . The display device according to claim 1 , wherein
the first metal layer and the third metal layer include a titanium film, and
the second metal layer includes an aluminum film.
12 . The display device according to claim 1 , wherein the through hole contains an electronic component.
13 . The display device according to claim 1 , wherein each of the plurality of functional layers is an organic electroluminescence layer.
14 . A display device comprising:
a base substrate;
a thin film transistor layer provided on the base substrate and including a wiring layer; and
a light-emitting element layer provided on the thin film transistor layer and including a plurality of first electrodes, a plurality of functional layers, and a common second electrode, which are sequentially stacked, in this stated order, in such a manner as to correspond to a plurality of subpixels in a display area, wherein:
an insular non-display area is provided in the display area,
a through hole extends in a direction of a thickness of the base substrate in the non-display area,
a partition wall is provided in the non-display area such that the partition wall surrounds the through hole,
the partition wall is made of a same material, and provided in a same layer, as the wiring layer, in such a manner that an edge on a through hole side of an upper side segment on a light-emitting element layer side projects toward the through hole side beyond an edge on the through hole side of a lower side segment on a base substrate side,
the wiring layer includes a first metal layer, a second metal layer, and a third metal layer, all of which are sequentially stacked, in this stated order, from the base substrate side toward the light-emitting element layer side,
the partition wall includes:
a wall bottom portion made of a same material, and provided in a same layer, as the first metal layer, and shaped similar to a frame,
a wall middle portion made of a same material, and provided in a same layer, as the second metal layer, and shaped similar to a frame, and
a wall top portion made of a same material, and provided in a same layer, as the third metal layer, and shaped similar to a frame, wherein the wall top portion comprises, on the through hole side, an edge shaped similar to an eave which projects toward the through hole side beyond an edge of the wall middle portion on the through hole side,
the thin film transistor layer includes a second inorganic insulating film provided on the base substrate side of the wiring layer,
the second inorganic insulating film is provided on the base substrate side of the partition wall so as not to extend beyond the partition wall,
the partition wall covers an edge of the second inorganic insulating film on the through hole side,
the wall bottom portion covers the edge of the second inorganic insulating film on the through hole side, and
the second inorganic insulating film is provided continuously from the display area to the partition wall.
15 . The display device according to claim 14 , wherein
a sealing film in which a first inorganic sealing film, an organic sealing film, and a second inorganic sealing film are sequentially stacked, in this stated order, is provided on the light-emitting element layer, and
the first inorganic sealing film is provided in the non-display area such that the first inorganic sealing film is in contact with the base substrate.
16 . The display device according to claim 14 , wherein
the first metal layer and the third metal layer include a titanium film, and
the second metal layer includes an aluminum film.
17 . The display device according to claim 14 , wherein the through hole contains an electronic component.
18 . A display device comprising:
a base substrate;
a thin film transistor layer provided on the base substrate and including a wiring layer; and
a light-emitting element layer provided on the thin film transistor layer and including a plurality of first electrodes, a plurality of functional layers, and a common second electrode, which are sequentially stacked, in this stated order, in such a manner as to correspond to a plurality of subpixels in a display area, wherein:
an insular non-display area is provided in the display area,
a through hole extends in a direction of a thickness of the base substrate in the non-display area,
a partition wall is provided in the non-display area such that the partition wall surrounds the through hole, and
the partition wall is made of a same material, and provided in a same layer, as the wiring layer,
the wiring layer includes a first metal layer, a second metal layer, and a third metal layer, all of which are sequentially stacked, in this stated order, from a base substrate side toward a light-emitting element layer side, and
the partition wall includes:
a wall bottom portion made of a same material, and provided in a same layer, as the first metal layer, and shaped similar to a frame,
a wall middle portion made of a same material, and provided in a same layer, as the second metal layer, and shaped similar to a frame, and
a wall top portion made of a same material, and provided in a same layer, as the third metal layer, and shaped similar to a frame, wherein the wall top portion comprises, on a through hole side, an edge shaped similar to an eave which projects toward the through hole side beyond an edge of the wall middle portion on the through hole side, without reaching an edge of the wall bottom portion on the through hole side.