Novel roll-to-roll lift-off patterned active-matrix display on flexible polymer substrate

C.-Y. Lo (Corresponding Author), Johanna Hiitola-Keinänen, Olli-Heikki Huttunen, Jarno Petäjä, Jukka Hast, Arto Maaninen, Harri Kopola, H. Fujita, H. Toshiyoshi

Research output: Contribution to journalArticleScientificpeer-review

34 Citations (Scopus)


A novel electrode patterning technique by using lift-off a sacrificial black ink layer on thin polymer substrate was performed on a roll-to-roll (reel-to-reel, R2R) printing system. An active-matrix display array was demonstrated by this technique with 2000 μm display pixels with concept of MEMS (micro electro mechanical system) etalon. The resolution of this flexography lift-off system was improved to 100 μm for pattern isolation from gravure printing. Compare to well-developed hot embossing or laser ablation for polymer substrate’s patterning, R2R lift-off provides a flat and smooth surface which is a must for multilayer stacking and reliability. This system also provides a high pattern integrity, low cost, large scale, and high throughput solution for electrode patterning on flexible polymer substrate.
Original languageEnglish
Pages (from-to)979-983
Number of pages5
JournalMicroelectronic Engineering
Issue number4-6
Publication statusPublished - 2009
MoE publication typeA1 Journal article-refereed


  • Fabry-Perot
  • Flexible display
  • MEMS
  • Roll-to-roll

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