Invention Grant
- Patent Title: Photolithographic patterning of organic electronic devices
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Application No.: US16575973Application Date: 2019-09-19
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Publication No.: US10854854B2Publication Date: 2020-12-01
- Inventor: John Andrew Defranco , Terrence Robert O'Toole , Frank Xavier Byrne , Diane Carol Freeman
- Applicant: ORTHOGONAL, INC.
- Applicant Address: US NY Rochester
- Assignee: Orthogonal, Inc.
- Current Assignee: Orthogonal, Inc.
- Current Assignee Address: US NY Rochester
- Agency: Merchant & Gould P.C.
- Main IPC: H01L21/00
- IPC: H01L21/00 ; H01L29/08 ; H01L51/56 ; H01L51/00 ; H01L27/32 ; H01L51/52 ; H01L51/50

Abstract:
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.
Public/Granted literature
- US20200013993A1 PHOTOLITHOGRAPHIC PATTERNING OF ORGANIC ELECTRONIC DEVICES Public/Granted day:2020-01-09
Information query
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