Method of fabricating organic LED matrices
US5641611A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1995 |
| Grant date | Jun 24, 1997 |
| Priority date | — |
| Expiry date | Aug 21, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K71/166
Abstract
Items of material are patterned on a substrate by forming a layer of photoresist on the substrate and a layer of metal on the photoresist. The photoresist is patterned to define an opening exposing a portion of the substrate and the metal is patterned to define an aperture smaller than the opening so as to divide the exposed surface of the substrate into shadow areas and a non-shadow area. A first material system is evaporated generally perpendicular to the aperture to form a first organic light emitting diode on the surface of the substrate in the non-shadow area and second and third material systems are evaporated at angles to the aperture to form second and third organic light emitting diodes in the shadow areas. Passivation material is evaporated perpendicularly onto the first diode and at the angle onto the second diode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.