FLEXIBLE ORGANIC LIGHT EMITTING DEVICE INCLUDING BUCKLE STRUCTURE AND MANUFACTURING METHOD THEREOF

The present invention relates to a buckle structure formation technique for improving an optical extraction rate when light generated by a light emitting layer of a flexible organic light emitting device is extracted outside the device. The present invention forms a buckle structure autonomously and...

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Bibliographic Details
Main Author PARK, BYOUNG CHOO
Format Patent
LanguageEnglish
Korean
Published 24.07.2014
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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Summary:The present invention relates to a buckle structure formation technique for improving an optical extraction rate when light generated by a light emitting layer of a flexible organic light emitting device is extracted outside the device. The present invention forms a buckle structure autonomously and spontaneously with the thermally contracted shapes of an EL layer and a cathode layer using the difference between the thermal expansion coefficients of the EL layer and the cathode layer by thermally depositing and cooling a metal cathode in a process of manufacturing an FOLED having a PEDOT:PSS anode on a flexible substrate. This buckle structure can improve the outcoupling efficiency of a FOLED device.
Bibliography:Application Number: KR20140065382