Patent · US Active

Organic light emitting diodes with structured electrodes

US8324651B2 · kind B2 · utility

0Cited by

2References

4Claims

0Family size

Assignee

The Regents of the University of California · US

Inventors

Samuel S. Mao · Castro Valley, US
Gao Liu · Piedmont, US
Stephen Johnson · Georgetown, US

Key dates

Filing date	Apr 26, 2007
Grant date	Dec 4, 2012
Priority date	—
Expiry date	Dec 20, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24479
WIPO fieldMicro-structural and nano-technology
WIPO sectorChemistry

Abstract

A cathode that contain nanostructures that extend into the organic layer of an OLED has been described. The cathode can have an array of nanotubes or a layer of nanoclusters extending out from its surface. In another arrangement, the cathode is patterned and etched to form protruding nanostructures using a standard lithographic process. Various methods for fabricating these structures are provided, all of which are compatible with large-scale manufacturing. OLEDs made with these novel electrodes have greatly enhanced electron injection, have good environmental stability.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.