Organic EL display panel
View Patent ↗An organic electroluminescence (EL) display panel includes a multi-layered wiring laminate disposed on a substrate and including insulating layers and wiring disposed on at least one of the insulating layers and extending to a vicinity of an outer periphery of the wiring laminate; an organic EL element array disposed on the wiring laminate; a first inorganic insulating layer disposed on the array and extending outside the outer periphery of the wiring laminate in plan view; a resin sealing layer disposed on the first inorganic insulating layer, covering the array in plan view, and having an outer periphery above a resin insulating layer that is a highest layer among the insulating layers; a second inorganic insulating layer disposed on the resin sealing layer, extending outside the outer periphery of the resin sealing layer in plan view, and being in contact with the first inorganic insulating layer in a thickness direction.
1. An organic electroluminescence (EL) display panel, comprising:
a substrate;
a multi-layered wiring laminate disposed on the substrate and including wiring and a plurality of insulating layers, the wiring disposed on at least one of the insulating layers and extending to a vicinity of an outer periphery of the multi-layered wiring laminate;
an organic EL element array disposed on the multi-layered wiring laminate and including organic EL elements that are connected to the wiring;
a first inorganic insulating layer disposed at least on the organic EL element array and extending outside the outer periphery of the multi-layered wiring laminate in plan view;
a resin sealing layer disposed on the first inorganic insulating layer, the resin sealing layer covering the organic EL element array in plan view and having an outer periphery above a resin insulating layer that is a highest layer among the insulating layers; and
a second inorganic insulating layer disposed at least on the resin sealing layer, the second inorganic insulating layer extending outside the outer periphery of the resin sealing layer in plan view and being in contact with the first inorganic insulating layer in a thickness direction.
2. The organic EL display panel of claim 1 , wherein
the second inorganic insulating layer extends outside the outer periphery of the multi-layered wiring laminate in plan view and is in contact with the first inorganic insulating layer above the substrate.
3. The organic EL display panel of claim 1 , wherein
the multi-layered wiring laminate includes:
a first part on which the organic EL element array is disposed and in which a first portion of the resin insulating layer is present;
a second part that surrounds the first part in plan view and in which a second portion of the resin insulating layer having a bank-shape is present;
a third part that is between the first part and the second part in plan view and that has a shape of a circumferential groove in which the resin insulating layer is not present; and
a fourth part that surrounds the second part and in which the resin insulating layer is not present, wherein
the wiring extends from the first part to the fourth part in plan view,
the outer periphery of the resin sealing layer is in the second part in plan view, and
the first inorganic insulating layer and the second inorganic insulating layer extend to the fourth part in plan view and are in contact with each other outside the outer periphery of the resin sealing layer.
4. The organic EL display panel of claim 3 , wherein
the multi-layered wiring laminate further includes:
a fifth part that is not covered by the resin insulating layer, the fifth part surrounding the first part and being surrounded by the third part in plan view; and
a sixth part that is covered by the resin insulating layer, the sixth part surrounding the fifth part and being surrounded by the third part in plan view.
5. The organic EL display panel of claim 1 further comprising
a second resin sealing layer, wherein
the first inorganic insulating layer includes an upper layer and a lower layer, and
the second resin sealing layer is disposed between the upper layer and the lower layer above the organic EL element array in the first part of the multi-layered wiring laminate.
6. The organic EL display panel of claim 1 , wherein
the organic EL elements each include:
a light-emitting unit that includes a pixel electrode, a common electrode opposing the pixel electrode, and an organic light-emitting layer sandwiched between the pixel electrode and the common electrode; and
a transistor that is connected to the pixel electrode and that drives the light-emitting unit, and
the wiring is connected to: the common electrode; or sources, drains, gates, or power lines of the transistors of the organic EL elements.
7. The organic EL display panel of claim 1 , wherein
in the first part of the multi-layered wiring laminate, the first inorganic insulating layer covers the organic EL element array, the wiring, and the resin insulating layer.
8. The organic EL display panel of claim 1 , wherein
the substrate is a film including a flexible material.
9. The organic EL display panel of claim 1 , wherein
the substrate is light-transmissive.