Display device including projecting shaped bank portion
In an organic EL display device, a frame region provided outside a display region is provided with a damming wall extending on an outer periphery of the display region and a second lead-out wiring line extending across the damming wall from the display region side to an outside of the frame region. The damming wall includes a bank portion having a projecting shape and provided, in a part in which the second lead-out wiring line extends, on both sides in a direction in which the second lead-out wiring line extends with respect to a top portion of the damming wall. The bank portion is lower than a top portion of a second damming wall and forms, between the bank portion and the top portion, a trap portion having a recessed shape.
1 . A display device comprising:
a substrate layer;
a light-emitting element layer including a plurality of light-emitting elements and supported by the substrate layer;
a display region configured to display an image by light emission of the plurality of light-emitting elements, and
a frame region provided outside the display region,
wherein:
the frame region is provided with a wall body, that is supported by the substrate layer and that extends on an outer periphery of the display region, and a wiring line extending across the wall body from a display region side to an outside of the frame region,
the wall body includes a bank portion having a projecting shape and provided, in a part of the wall body where the wiring line extends, on at least one side of the wiring line in a direction in which the wiring line extends with respect to a top portion of the wall body,
the wall body includes an overhanging portion that overhangs in the direction in which the wiring line extends with respect to the top portion of the wall body, and the bank portion is provided in the overhanging portion,
the bank portion is lower than the top portion of the wall body and forms, between the bank portion and the top portion, a trap portion having a recessed shape, and
the bank portion surrounds the part of the wall body where the wiring line extends, and forms the trap portion in a recessed shape between the bank portion and the top portion.
2 . The display device according to claim 1 ,
wherein the bank portion is provided on both sides of the wiring line in the direction in which the wiring line extends with respect to the top portion of the wall body.
3 . The display device according to claim 1 ,
wherein:
the wall body includes a first wall layer supported by the substrate layer, and a second wall layer provided on the first wall layer,
the second wall layer forms the top portion of the wall body, and
the first wall layer constitutes-forms the bank portion.
4 . The display device according to claim 1 ,
wherein:
the wall body includes a first wall layer supported by the substrate layer, and a second wall layer provided on the first wall layer, and
the second wall layer forms the top portion of the wall body and the bank portion.
5 . The display device according to claim 3 , further comprising:
a thin film transistor layer, including a plurality of thin film transistors, and provided between the substrate layer and the light-emitting element layer,
wherein:
the thin film transistor layer includes a flattening film covering the plurality of thin film transistors,
the light-emitting element layer includes a plurality of electrodes and an edge cover sectioning the plurality of electrodes,
the first wall layer is formed of a same material, and on a same layer, as the flattening film, and
the second wall layer is formed of a same material, and on a same layer, as the edge cover.
6 . The display device according to claim 1 , further comprising:
a sealing film covering the plurality of light-emitting elements,
wherein;
the sealing film includes a first inorganic sealing layer, an organic sealing layer provided on the first inorganic sealing layer, and a second inorganic sealing layer provided on the organic sealing layer,
the wall body is provided in a frame-like shape surrounding the display region, and
the organic sealing layer is provided inside the wall body.
7 . The display device according to claim 1 ,
wherein each light-emitting element of the plurality of light-emitting elements is an organic electroluminescence element.
8 . A display device comprising:
a substrate layer;
a light-emitting element layer including a plurality of light-emitting elements and supported by the substrate layer;
a display region configured to display an image by light emission of the plurality of light-emitting elements, and
a frame region provided outside the display region,
wherein:
the frame region is provided with a wall body, that is supported by the substrate layer and that extends on an outer periphery of the display region, and a wiring line extending across the wall body from a display region side to an outside of the frame region,
the wall body includes a bank portion having a projecting shape and provided, in a part of the wall body where the wiring line extends, on at least one side of the wiring line in a direction in which the wiring line extends with respect to a top portion of the wall body,
the wall body includes a first wall layer supported by the substrate layer and a second wall layer provided on the first wall layer, the second wall layer forms the top portion of the wall body, and the first wall layer forms the bank portion,
the bank portion is lower than the top portion of the wall body and forms, between the bank portion and the top portion, a trap portion having a recessed shape, and
the bank portion surrounds the part of the wall body where the wiring line extends, and forms the trap portion in a recessed shape between the bank portion and the top portion.
9 . The display device according to claim 8 ,
wherein the bank portion is provided on both sides of the wiring line in the direction in which the wiring line extends with respect to the top portion of the wall body.
10 . The display device according to claim 8 , further comprising:
a thin film transistor layer, including a plurality of thin film transistors, and provided between the substrate layer and the light-emitting element layer,
wherein:
the thin film transistor layer includes a flattening film covering the plurality of thin film transistors,
the light-emitting element layer includes a plurality of electrodes, and an edge cover sectioning the plurality of electrodes,
the first wall layer is formed of a same material, and on a same layer, as the flattening film, and
the second wall layer is formed of a same material, and on a same layer, as the edge cover.
11 . The display device according to claim 8 , further comprising:
a sealing film covering the plurality of light-emitting elements,
wherein:
the sealing film includes a first inorganic sealing layer, an organic sealing layer provided on the first inorganic sealing layer, and a second inorganic sealing layer provided on the organic sealing layer,
the wall body is provided in a frame-like shape surrounding the display region, and
the organic sealing layer is provided inside the wall body.
12 . The display device according to claim 8 ,
wherein each light-emitting element of the plurality of light-emitting elements is an organic electroluminescence element.
13 . A display device comprising:
a substrate layer;
a light-emitting element layer including a plurality of light-emitting elements and supported by the substrate layer;
a display region configured to display an image by light emission of the plurality of light-emitting elements, and
a frame region provided outside the display region,
wherein:
the frame region is provided with a wall body, that is supported by the substrate layer and that extends on an outer periphery of the display region, and a wiring line extending across the wall body from a display region side to an outside of the frame region,
the wall body includes a bank portion having a projecting shape and provided, in a part of the wall body where the wiring line extends, on at least one side of the wiring line in a direction in which the wiring line extends with respect to a top portion of the wall body,
the wall body includes a first wall layer supported by the substrate layer, and a second wall layer provided on the first wall layer, and the second wall layer forms the top portion of the wall body and the bank portion,
the bank portion is lower than the top portion of the wall body and forms, between the bank portion and the top portion, a trap portion having a recessed shape, and
the bank portion surrounds the part of the wall body where the wiring line extends, and forms the trap portion in a recessed shape between the bank portion and the top portion.
14 . The display device according to claim 13 ,
wherein the bank portion is provided on both sides of the wiring line in the direction in which the wiring line extends with respect to the top portion of the wall body.
15 . The display device according to claim 13 , further comprising:
a thin film transistor layer, including a plurality of thin film transistors, and provided between the substrate layer and the light-emitting element layer,
wherein:
the thin film transistor layer includes a flattening film covering the plurality of thin film transistors,
the light-emitting element layer includes a plurality of electrodes, and an edge cover sectioning the plurality of electrodes,
the first wall layer is formed of a same material, and on a same layer, as the flattening film, and
the second wall layer is formed of a same material, and on a same layer, as the edge cover.
16 . The display device according to claim 13 , further comprising:
a sealing film covering the plurality of light-emitting elements,
wherein:
the sealing film includes a first inorganic sealing layer, an organic sealing layer provided on the first inorganic sealing layer, and a second inorganic sealing layer provided on the organic sealing layer,
the wall body is provided in a frame-like shape surrounding the display region, and
the organic sealing layer is provided inside the wall body.
17 . The display device according to claim 13 ,
wherein each light-emitting element of the plurality of light-emitting elements is an organic electroluminescence element.