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Epoxy Methacrylate Resin as Binder Polymer for Black Negative-Tone Photoresists
CCTech. Co. Ltd., Hwaseong, South Korea
School of Material Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, South Korea
Duksan Neolux Co., Ltd., Cheonan, South Korea
Duksan Neolux Co., Ltd., Cheonan, South Korea
CCTech. Co. Ltd., Hwaseong, South Korea
School of Material Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, South Korea
- 1 CCTech. Co. Ltd., Hwaseong, South Korea
- 2 School of Material Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, South Korea
- 3 Duksan Neolux Co., Ltd., Cheonan, South Korea
- 4 Duksan Neolux Co., Ltd., Cheonan, South Korea
- 5 CCTech. Co. Ltd., Hwaseong, South Korea
- 6 School of Material Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, South Korea
Materials Sciences and Applications·Volume 11 (2020)·Pages 285–295·Published 7 May 2020·DOI10.4236/msa.2020.115019
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Abstract
Epoxy acrylate (EA) resin, which originates from epoxides, has long been served as a photocurable coating and adhesive material owing to its double bonds. Specifically, alkaline-developable EA resins can be used as a binder polymer in negative-tone photoresists. In this work, we synthesized a series of acidic polyester-type epoxy methacrylate resins, characterized the intermediates and products, and tested their performance as a binder polymer for the photolithographic micro-patterning of the pixel-defining layer on organic light-emitting diodes in comparison to a widely used commercial binder polymer. Copolymer-type binder polymer BP-2-2 was produced excellent patterning with no residue due to its high compatibility with the black mill base.
KeywordsEpoxy Methacrylate ResinNegative-Tone PhotoresistBinder Polymer
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