Organic electroluminescence display panel with tungsten oxide containing hole injection layer that electrically connects electrode to auxiliary wiring, and organic electroluminescence display device
US8981361B2 · kind B2 · utility
3Cited by
11References
26Claims
0Family size
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Key dates
| Filing date | Nov 18, 2011 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Nov 18, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/80522
Abstract
A hole injection layer and a second electrode are both formed to be continuous above a first electrode and above an auxiliary wiring. The hole injection layer contains a tungsten oxide. An UPS spectrum, obtained from a UPS measurement, has a protrusion appearing near a Fermi surface and within a region corresponding to a binding energy range lower than a top of a valence band, and the tungsten oxide satisfies a condition, determined from an XPS measurement, that a ratio in a number density of atoms other than tungsten atoms and oxygen atoms to the tungsten atoms does not exceed 0.83.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.