Sealing structure with barrier membrane for electronic element, display device, electronic apparatus, and fabrication method for electronic element
A sealing structure having a barrier membrane, with which the overall thickness of a display device can be reduced while ensuring sufficient barrier properties against water and oxygen so as to prevent deterioration of luminous layers. The sealing structure includes a multi-layered resin membrane for sealing an electronic element section disposed on a substrate, which is formed by alternately depositing flattening resin layers and barrier layers on the substrate. The flattening resin layers are formed inside a blocking region surrounding the electronic element section. A display device having the sealing structure, an electronic apparatus having the display device, and a fabrication method for the display device are also disclosed.
1. A sealing structure for an electronic element, comprising:
a first blocking region surrounding at least a portion of the electronic element;
a first flattening resin layer that is formed above a base member and that is delineated by the first blocking region formed on the base member;
a first barrier layer extending beyond the first flattening resin layer to cover a side of the first flattening resin layer and the first blocking region;
a second flattening resin layer disposed over the first barrier layer; and
a second barrier layer covering the second flattening resin layer and the first blocking region, wherein
the first barrier layer contacts the second barrier layer at an outside of the first blocking region.
2. A sealing structure for an electronic element according to claim 1 , wherein the base member comprises an inorganic insulating layer on which the first blocking region is formed.
3. A sealing structure for an electronic element according to claim 2 , wherein the inorganic insulating layer contacts both the first barrier layer and the second barrier layer.
4. A sealing structure for an electronic element according to claim 1 , further comprising a second blocking region disposed outside the first blocking region and delineating the second flattening resin layer.
5. A sealing structure for an electronic element according to claim 4 ,
wherein the first barrier layer is extended to cover the outside of the first blocking region, and
wherein the second barrier is extended to cover an outside of the second blocking region.
6. A sealing structure for an electronic element according to claim 1 , wherein a protruding member made of organic material is disposed at the first blocking region.
7. A sealing structure for an electronic element according to claim 1 , wherein a member including a liquid repelling group is disposed at the first blocking region.
8. A sealing structure for an electronic element according to claim 1 ,
wherein each of edge portions of the first flattening resin layer and the second flattening resin layer has a slope, and
wherein the slope of the second flattening resin layer is more gentle than the slope of the first flattening resin layer.
9. A display device comprising the sealing structure for an electronic element according to claim 1 , wherein the electronic element comprises a display element.
10. A display device according to claim 9 , wherein the display element comprises a plurality of light emitting elements.
11. A display device according to claim 10 ,
wherein the light emitting elements are delimited by banks being made of organic membranes, and
wherein the banks are disposed at the first blocking region.
12. An electronic apparatus comprising the display device according to claim 10 .
13. A sealing structure for an electronic element, comprising:
an inorganic insulating layer formed above a base member;
a first flattening resin layer disposed over the inorganic insulating layer and the electronic element;
a first barrier layer disposed over the first flattening resin layer;
a second flattening resin layer disposed over the first barrier layer; and
a second barrier layer disposed over the second flattening resin layer, wherein
the inorganic insulating layer contacts both the first barrier layer and the second barrier layer.
14. A sealing structure for an electronic element according to claim 13 , wherein a region in which the inorganic insulating layer contacts the first barrier layer and the second barrier layer surrounds the electronic element.
15. A sealing structure for an electronic element according to claim 13 ,
wherein each of edge portions of the first flattening resin layer and the second flattening resin layer has a slope, and
wherein the slope of the second flattening resin layer is more gentle than the slope of the first flattening resin layer.
16. A display device comprising the sealing structure for an electronic element according to claim 13 , wherein the electronic element comprises a display element.
17. A display device according to claim 16 , wherein the display element comprises a plurality of light emitting elements.
18. An electronic apparatus comprising the display device according to claim 16 .
19. A sealing structure for an electronic element, comprising:
a first flattening resin layer that is formed above an insulating layer and that comprises a first part and a second part surrounding the first part, the second part contacting the insulating layer;
a first barrier layer extending beyond the second part of the first flattening resin layer to cover an entirety of the second part of the first flattening resin layer;
a second flattening resin layer disposed over the first barrier layer; and
a second barrier layer covering the second flattening resin layer.
20. A sealing structure for an electronic element according to claim 19 , wherein the first part of the first flattening resin layer covers the electronic element.