Light-emitting element including EL layer, electrode which has high reflectance and a high work function, display device, electronic device, and lighting device
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United States of America Patent
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Jun 9, 2020
Grant Date -
May 12, 2016
app pub date -
Nov 4, 2015
filing date -
Nov 7, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A light-emitting element including a first electrode, a second electrode, and an EL layer provided between the first and second electrodes is provided. The first electrode includes a conductive layer, a first transparent conductive layer in contact with the conductive layer, and a second transparent conductive layer in contact with the first transparent conductive layer. The first transparent conductive layer contains a first oxide. The second transparent conductive layer contains a second oxide. The conductive layer has a function of reflecting light. The first oxide contains In and M (M represents Al, Si, Ti, Ga, Y, Zr, La, Ce, Nd, or Hf). The second oxide contains In. The resistivity of the second transparent conductive layer is lower than that of the first transparent conductive layer. The thickness of the second transparent conductive layer is greater than or equal to that of the first transparent conductive layer.
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Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- H01L Class
- 41.95 % this patent is cited more than
- 5 Age
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