Light-emitting element including a charge injection transport layer that includes a dissolvable metal compound, and display device and method for manufacturing thereof
First Claim
Patent Images
1. A light emitter, comprising:
- a first electrode;
a charge injection transport layer;
a light-emitting layer; and
a second electrode, said first electrode, said charge injection transport layer, and said second electrode being layered in this order, at least said light-emitting layer being defined by a bank,wherein said charge injection transport layer includes;
a metal compound that is dissolvable by a predetermined solvent; and
a recessed portion where said metal compound has been dissolved by the predetermined solvent,said recessed portion of said charge injection transport layer including;
an inner bottom surface that is in contact with a bottom surface of said light-emitting layer; and
an inner side surface that is continuous with said inner bottom surface and in contact at least with a portion of a side surface of said light-emitting layer.
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Abstract
A light emitter and a method of manufacturing a light emitter. The light emitter includes a first electrode, a charge injection transport layer, a light-emitting layer, and a second electrode that are layered in this order. At least the light-emitting layer is defined by a bank that has at least one liquid-repellent surface. The charge injection transport layer is principally composed of a metal compound that is more liquid-philic than the surface of the bank. The charge injection transport layer includes a recessed structure so that in a region defined by the bank, the charge injection transport layer is lower than a bottom surface of the bank.
59 Citations
19 Claims
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1. A light emitter, comprising:
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a first electrode; a charge injection transport layer; a light-emitting layer; and a second electrode, said first electrode, said charge injection transport layer, and said second electrode being layered in this order, at least said light-emitting layer being defined by a bank, wherein said charge injection transport layer includes; a metal compound that is dissolvable by a predetermined solvent; and a recessed portion where said metal compound has been dissolved by the predetermined solvent, said recessed portion of said charge injection transport layer including; an inner bottom surface that is in contact with a bottom surface of said light-emitting layer; and an inner side surface that is continuous with said inner bottom surface and in contact at least with a portion of a side surface of said light-emitting layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A light emitter, comprising:
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a first electrode; a charge injection transport layer; an intermediate layer; a light-emitting layer; and a second electrode, said first electrode, said charge injection transport layer, said intermediate layer, said light-emitting layer, and said second electrode being layered in this order, at least said light-emitting layer being defined by a bank, wherein said charge injection transport layer is formed of a metal compound that is dissolvable by a predetermined solvent, said charge injection transport layer including a recessed portion in which said metal compound has been dissolved by the predetermined solvent, said recessed portion of said charge injection transport layer including an inner bottom surface that is in contact with a bottom surface of said intermediate layer, an inner side surface of said recessed portion being continuous with said inner bottom surface and in contact at least with a portion of a side surface of said intermediate layer. - View Dependent Claims (12, 13, 14, 15)
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16. A light emitter, comprising:
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a first electrode; a charge injection transport layer; a light-emitting layer; and a second electrode, said first electrode, said charge injection transport layer, said light-emitting layer and said second electrode being layered in this order, at least said light-emitting layer being defined by a bank, wherein said charge injection transport layer has a recessed structure including a recessed portion, said recessed portion of said charge injection transport layer including an inner bottom surface and an inner side surface being continuous with said inner bottom surface, and an ink material-containing layer is accumulated in said recessed portion and is in contact with said inner bottom surface and said inner side surface. - View Dependent Claims (17, 18, 19)
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Specification