33.4L: <i>Late‐News Paper</i>: High Resolution Vacuum Patterning of Organic‐ and Metal‐Layers for Organic Electronic Devices

Burghart, Markus; Dutkowiak, Andreas; Tandler, Lutz; Richter, Jörk; Haasemann, Georg; Gross, Harald; Seyfert, Ulf; Strietzel, Thomas; Hecht, Christian

doi:10.1002/j.2168-0159.2013.tb06238.x

Cited by 2 publications

(1 citation statement)

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“…We reported capillary-induced ink sublimation transfer technology (CITECH) in order to achieve a breakthrough in technology capable of fabricating high-resolution full-color OLEDs [8]. This method differs from the technologies of flash mask transfer lithography (FMTL) [9] and laser-induced pattern-wise sublimation (LIPS) [10] because the patterns of the emitting layer (EML) are defined by capillary-induced solidified ink. As shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

P‐73: High‐Resolution Color Patterning of an OLED Device via Capillary‐Induced Ink Filling and a Sublimation Transfer Process

Cho

Jeong

Lee

et al. 2019

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We studied capillary‐induced ink transfer technology in order to achieve a breakthrough in relation to the fabrication of a high‐resolution color patterning for OLED display. In this approach, the selective surface treatment of a donor substrate, capillary‐induced ink filling, and a solidified ink sublimation transfer technique are important processes. We investigated the characteristics of ink as it was filled into microchannels and the sublimation transfer characteristics of EML films in accordance with the volume fraction of 1,2‐dichlorobenznene (oDCB) (oDCB/T) and the spin speeds. Through a selective surface treatment, red EML ink was successfully deposited into the microchannels using a conventional spin‐coating process. With the optimized ink filling properties and the sublimation transfer process, we fabricated phosphorescent OLED devices with striped EML patterns. Finally, we demonstrated that a red EML layer can be patterned with a width of 14 µm and pitch of 36.1 µm (700 ppi).

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Section: Introductionmentioning

confidence: 99%