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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
- 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