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Conference Paper
Low Fluorine Colorless Polyimide Substrate for Flexible OLED Display
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- Authors
- Yong-Hae Kim, Won-Jae Lee, Su-Jung Kim, Nam-Sung Cho, Dong-Min Kim, Gi Heon Kim
- Issue Date
- 2021-05
- Citation
- The Electrochemical Society (ECS) Meeting 2021, pp.1-19
- Publisher
- Electrochemical Society (ECS)
- Language
- English
- Type
- Conference Paper
- Abstract
- Flexible display has become the main stream for the next innovative display. To build the flexible electronics, polyimide varnish is usually coated on the carrier glass with the thickness of a few micrometer and various devices such as flexible solar cell, flexible display, flexible printed circuit board, flexible terahertz sensor, and smart window [1]. Currently available colorless polyimide varnish is usually made of fluorine contained 6-FDA, which has good characteristics such as high transmittance, low yellow index, excellent solubility, but also has bad characteristics such as low decomposition temperature, high coefficient of thermal expansion, high cost, and environmentally unfriendliness due to fluorine. In this study, we make low fluorine contained polyimide varnish by substituting 6-FDA to BPDA + ODPA.
- KSP Keywords
- Colorless polyimide, Decomposition temperature, Flexible printed circuit board, High coefficient of thermal expansion, High transmittance, Main stream, OLED display, Polyimide substrate, Yellow index, flexible OLED, flexible display