Organic light emitting diode structure and method of forming same
US10230071B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 27, 2017 |
| Grant date | Mar 12, 2019 |
| Priority date | — |
| Expiry date | Apr 27, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/351
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is provided organic light emitting diode (OLED) device that include an organic electroluminescent layer formed between a first electrode and a second electrode. The organic electroluminescent layer is formed of a photo-crosslinkable liquid having dichroic molecules therein, and has a grating pattern defined therein by exposure of regions of the organic electroluminescent layer to a light beam. The refractive index of the exposed regions of the organic electroluminescent layer varies across the grating pattern. A method for fabricating the OLED device is also provided that includes providing the organic electroluminescent layer and defining the grating pattern in the photo-crosslinkable liquid by illuminating regions of the organic electroluminescent layer with a light beam. The refractive index of the defined grating pattern is tuned by adjusting the dosage of light to which the photo-crosslinkable liquid is exposed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.