Controllably feeding organic material in making OLEDs

Details Controllably feeding organic material in making OLEDs Controllably feeding organic material in making OLEDs

2005-02-04

2009-12-01

Meeks, Timothy H (Department: 1792)

Coating processes

Coating by vapor, gas, or smoke

C427S066000, C427S069000, C427S070000, C118S726000

Reexamination Certificate

active

07625601

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.

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