Light-Emitting Device and a Method of Manufacturing Light-Emitting Device

A light-emitting device comprising:

• a first light-emitting element including a first lower electrode layer, a first upper electrode layer over the first lower electrode layer, and a first layer including a light-emitting organic compound interposed between the first lower electrode layer and the first upper electrode layer;
• a second light-emitting element being adjacent to the first light-emitting element and including a second lower electrode layer, a second upper electrode layer over the second lower electrode layer, and a second layer including a light-emitting organic compound interposed between the second lower electrode layer and the second upper electrode layer;
• an insulating layer including a depression, the depression being between the first light-emitting element and the second light-emitting element;
• and
• a structural body,
• wherein at least an end of the structural body has an acute-angled shape,
• wherein the insulating layer covers at least an edge portion of the first lower electrode layer and an edge portion of the second lower electrode layer,
• wherein the end of the structural body is in contact with the insulating layer, and
• wherein the first upper electrode layer is formed in a same layer as the second upper electrode layer and is separated over the depression of the insulating layer from the second upper electrode layer by the structural body.

A method of forming a light-emitting device, comprising the steps of:

• forming an insulating layer;
• forming a layer including a light-emitting organic compound so that the layer including the light-emitting organic compound covers a first lower electrode layer, a second lower electrode layer, and the insulating layer;
• forming a conductive film over the layer including the light-emitting organic compound;
• and
• separating the conductive film over the insulating layer into a first upper electrode layer and a second upper electrode layer by a structural body,
• wherein the insulating layer covers at least an edge portion of the first lower electrode layer, an edge portion of the second lower electrode layer, and a region between the first lower electrode layer and the second lower electrode layer, and
• wherein at least an end of the structural body has an acute-angled shape.

A method of forming a light-emitting device, comprising the steps of:

• forming an insulating layer;
• forming a layer including a light-emitting organic compound so that the layer including the light-emitting organic compound covers a first lower electrode layer, a second lower electrode layer, and the insulating layer;
• forming a conductive film over the layer including the light-emitting organic compound;
• and
• bonding a second substrate provided with a structural body to a first substrate, thereby separating the conductive film over the insulating layer into a first upper electrode layer and a second upper electrode layer by the structural body,
• wherein the insulating layer covers at least an edge portion of the first lower electrode layer, an edge portion of the second lower electrode layer, and a region between the first lower electrode layer and the second lower electrode layer, and
• wherein at least an end of the structural body has an acute-angled shape.

A method of forming a light-emitting device, comprising the steps of:

• forming an insulating layer;
• forming a layer including a light-emitting organic compound so that the layer including the light-emitting organic compound covers a first lower electrode layer, a second lower electrode layer, and the insulating layer;
• forming a conductive film over the layer including the light-emitting organic compound;
• and
• pressing a separating instrument downward onto the insulating layer, thereby separating the conductive film over the insulating layer into a first upper electrode layer and a second upper electrode layer by the separating instrument,
• wherein the insulating layer covers at least an edge portion of the first lower electrode layer, an edge portion of the second lower electrode layer, and a region between the first lower electrode layer and the second lower electrode layer, and
• wherein at least an end of the separating instrument has an acute-angled shape.