Substrate for light emitting device, light emitting device and process for production of light emitting device
US6762553B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 9, 2000 |
| Grant date | Jul 13, 2004 |
| Priority date | — |
| Expiry date | Oct 24, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/871
Abstract
There is provided a substrate for a light emitting device which includes an electrically conductive and transparent film which is in contact with a surface of a low refractive index member of which refractive index is greater than 1 and not greater than 1.30. In a preferable embodiment, the substrate further comprises a transparent member on its surface which is opposed to its surface which has the electrically conductive and transparent film. There is further provided a light emitting device which includes such substrate and a luminous layer, and the luminous layer is located on the electrically conductive and transparent film.With such light emitting device, a ratio of light which is withdrawn outside through the low refractive index member is increased, so that a coupling-out efficiency for surface emission of light withdrawn into the ambient air is increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.