Display unit
A display unit according to an embodiment of the disclosure includes a substrate, a wiring line and a light-emission section that are provided on the substrate, an insulating layer covering the wiring line and the light-emission section, and provided on an entire surface of the substrate, and a sealing layer provided on an entire surface of the insulating layer, and including a resin material having an oxygen transmission rate higher than a water-vapor transmission rate.
1. A display unit, comprising:
a substrate that comprises a base material;
a plurality of wiring lines on the substrate, wherein
a first wiring line of the plurality of wiring lines and a second wiring line of the plurality of wiring lines are on a front surface of the base material, and
a third wiring line of the plurality of wiring lines and a fourth wiring line of the plurality of wiring lines are on a back surface of the base material;
a first insulating layer between the first wiring line and the second wiring line;
a light-emission section on the substrate;
a second insulating layer on an entire surface of the substrate, wherein
the second insulating layer covers a fifth wiring line of the plurality of wiring lines and the light-emission section,
the fifth wiring line is on a portion of the second wiring line on the front surface,
the second insulating layer is in contact with the fifth wiring line, and
the second insulating layer comprises cresol novolac;
a third insulating layer between the fifth wiring line and the second wiring line,
wherein the third insulating layer comprises at least one of hafnium oxide, hafnium oxynitride, hafnium silicon oxynitride, or tantalum oxide;
a fourth insulating layer between the third wiring line and the fourth wiring line,
wherein each of the first insulating layer and the fourth insulating layer comprises a silicon nitride film and a silicon oxide film;
an intermediate layer on the second insulating layer; and
a sealing layer on an entire surface of the intermediate layer, wherein
the intermediate layer is one of an adhesive layer or a bonding layer configured to bond the sealing layer and the second insulating layer,
the second insulating layer is between the third insulating layer and the intermediate layer,
the sealing layer comprises a resin material having an oxygen transmission rate higher than a water-vapor transmission rate, and
the sealing layer has a moisture permeability less than ten times a moisture permeability of the substrate.
2. The display unit according to claim 1 , wherein a ratio of the oxygen transmission rate to the water-vapor transmission rate of the resin material is greater than 10 and less than or equal to 3520.
3. The display unit according to claim 1 , wherein the resin material comprises one of a cyclic olefin resin, a nylon resin, or a polyethylene resin.
4. The display unit according to claim 3 , wherein the cyclic olefin resin comprises one of an addition polymerization cycloolefin resin or a ring-opening polymerization cycloolefin resin.
5. The display unit according to claim 1 , wherein the fifth wiring line, the light-emission section, the second insulating layer, and the sealing layer constitute a layered structure that extends to an end face of the substrate.
6. The display unit according to claim 1 , wherein the light-emission section comprises a light-emitting diode.
7. The display unit according to claim 1 , wherein the base material is an organic base material.
8. The display unit according to claim 7 , wherein the organic base material comprises one of a polyester resin, an epoxy resin, or a polyimide resin.
9. The display unit according to claim 7 , wherein
the sealing layer extends to an end face of the substrate, and
a thickness of the sealing layer is between 10 μm and 300 μm.
10. The display unit according to claim 1 , wherein the third insulating layer is between the second insulating layer and the substrate.