Display process compatible accurate graphene patterning for OLED applications

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

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

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.

Original languageEnglish
Article number014003
Journal2D Materials
Volume5
Issue number1
DOIs
Publication statusPublished - 2018 Jan

Keywords

  • graphene
  • integrated module
  • liquid bridging
  • organic light emitting diode
  • patterning

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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