PHOTOLITHOGRAPHIC PATTERNING OF ORGANIC ELECTRONIC DEVICES

A method of making an OLED device includes providing a first undercut lift-off structure over the device substrate having a first array of bottom electrodes. Next, one or more first organic EL medium layers including at least a first light-emitting layer are deposited over the first undercut lift-of...

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Bibliographic Details
Main Authors BYRNE, Frank Xavier, DEFRANCO, John Andrew, O'TOOLE, Terrence Robert, FREEMAN, Diane Carol
Format Patent
LanguageEnglish
Published 09.01.2020
Subjects
ELECTRICITY
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Summary:A method of making an OLED device includes providing a first undercut lift-off structure over the device substrate having a first array of bottom electrodes. Next, one or more first organic EL medium layers including at least a first light-emitting layer are deposited over the first undercut lift-off structure and over the first array of bottom electrodes. The first undercut lift-off structure and overlying first organic EL medium layer(s) are removed by treatment with a first lift-off agent comprising a fluorinated solvent to form a first intermediate structure. The process is repeated using a second undercut lift-off structure to deposit one or more second organic EL medium layers over a second array of bottom electrodes. After removal of the second undercut lift-off structure, a common top electrode is provided in electrical contact with the first and second organic EL medium layers.
Bibliography:Application Number: US201916575973