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Journal Article Display Process Compatible Accurate Graphene Patterning for OLED Applications
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Authors
Jin-Wook Shin, Jun-Han Han, Hyunsu Cho, Jaehyun Moon, Byoung-Hwa Kwon, Seungmin Cho, Taeshik Yoon, Taek-Soo Kim, Maki Suemitsu, Jeong-Ik Lee, Nam Sung Cho
Issue Date
2018-01
Citation
2D Materials, v.5, no.1, pp.1-9
ISSN
2053-1583
Publisher
Institute of Physics (IOP)
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1088/2053-1583/aa9cae
Project Code
17PB3300, Development of basic and applied technologies of graphene based transparent electrode and film encapsulation for flexible OLED device/panel applicatio, Lee Jeong Ik
Abstract
Graphene film can be used as transparent electrodes in display and optoelectronic applications. However, achieving residue free graphene film pixel arrays with geometrical precision on large area has been a difficult challenge. By utilizing the liquid bridging concept, we realized photolithographic patterning of graphene film with dimensional correctness and absence of surface contaminant. On a glass substrate of 100 × 100 mm2 size, we demonstrate our patterning method to fabricate an addressable two-color OLED module of which graphene film pixel size is 170 × 300 μm2. Our results strongly suggest graphene film as a serviceable component in commercial display products. The flexible and foldable display applications are expected to be main beneficiaries of our method.
KSP Keywords
Commercial Display, Display applications, Geometrical precision, Glass substrate, Liquid bridging, Optoelectronic applications, Photolithographic patterning, Pixel size, Two-color, graphene films, graphene patterning