OLED with color change media
US7057339B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2004 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | Apr 8, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/35
Abstract
A tuned OLED device includes a microcavity structure including a light-emitting layer for producing light, a semitransparent reflector, and a reflector layer disposed on opposite sides of the light-emitting layer, the microcavity structure enhancing on-axis light produced from the light-emitting layer in at least one particular wavelength to produce a desired on-axis viewed color while not substantially enhancing on-axis other wavelengths of such light; and a layer including a color change medium which is responsive to wavelengths of light shorter than the particular wavelength by absorbing such shorter wavelengths of light and emitting light corresponding in color to the particular wavelength, thereby improving the color of the light produced by the OLED device when viewed in an off-axis direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.