Controllably feeding organic material in making OLEDs
US7625601B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2005 |
| Grant date | Dec 1, 2009 |
| Priority date | — |
| Expiry date | Apr 2, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K71/40
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for metering powdered or granular material onto a heated surface to vaporize such material, includes providing a container with powdered or granular material having at least one component; providing a rotatable auger disposed in material receiving relationship with the container for receiving powdered or granular material from the container and as the auger rotates, such rotating auger translates such powdered or granular material along a feed path to a feeding location; and providing at least one opening at the feeding location such that the pressure produced by the rotating auger at the feeding location causes the powdered or granular material to be forced through the opening onto the heated surface in a controllable manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.