Light source and device having the same
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorHideki Matsukura
Life of this patent
Estimating the term…
Abstract
Deterioration of the whole electroluminescence layer which is caused by moisture penetration through the electroluminescence layer because of a pinhole in an electrode is prevented. A plurality of island-shaped electroluminescence layers are provided. That is, an electroluminescence layer is divided into plural layers. In addition, the plurality of island-shaped electroluminescence layers are interposed between a pair of common electrodes. Accordingly, even when moisture penetrates into one of the island-shaped electroluminescence layers, moisture does not penetrate into another of the island-shaped electroluminescence layers.
Claims24
A light source comprising:
- a first electrode;
- a nonconductive layer over the first electrode, the nonconductive layer comprising a plurality of opening portions;
- a plurality of island-shaped light-emitting layers comprising a first island-shaped light-emitting layer and a second island-shaped light-emitting layer;
- and
- a second electrode covering the plurality of island-shaped light-emitting layers,
- wherein a center portion of the first island-shaped light-emitting layer is formed in one of the plurality of opening portions, and
- wherein an end portion of the first island-shaped light-emitting layer is formed outside the one of the plurality of opening portions over the nonconductive layer.
A light source comprising:
- a first electrode;
- a nonconductive layer comprising a plurality of opening portions and being formed by making the first electrode have an insulating surface;
- a plurality of island-shaped light-emitting layers comprising a first island-shaped light-emitting layer and a second island-shaped light-emitting layer;
- and
- a second electrode covering the plurality of island-shaped light-emitting layers,
- wherein a center portion of the first island-shaped light-emitting layer is formed in one of the plurality of opening portions, and
- wherein an end portion of the first island-shaped light-emitting layer is formed outside the one of the plurality of opening portions over the nonconductive layer.
A light source comprising:
- a first electrode;
- a plurality of island-shaped light-emitting layers comprising a first island-shaped light-emitting layer and a second island-shaped light-emitting layer over the first electrode;
- a nonconductive layer comprising a plurality of opening portions over the first electrode;
- and
- a second electrode over the nonconductive layer,
- wherein the second electrode is in contact with the first island-shaped light-emitting layer exposed in one of the plurality of opening portions, and
- wherein the nonconductive layer is formed to cover an end portion of the first island-shaped light-emitting layer outside the one of the plurality of opening portions.
Dependencies are inferred from the claim text.