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Synthesis of New Binder Polymers for Photolithographic Patterning of Black Pixel Define Layers of Organic Light Emitting Diode
CCTech. Co. Ltd, Hwaseong, Korea
School of Material Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea
Duksan Neolux Co., Ltd., Cheonan, Korea
Duksan Neolux Co., Ltd., Cheonan, Korea
CCTech. Co. Ltd, Hwaseong, Korea
School of Material Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea
- 1 CCTech. Co. Ltd, Hwaseong, Korea
- 2 School of Material Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea
- 3 Duksan Neolux Co., Ltd., Cheonan, Korea
- 4 Duksan Neolux Co., Ltd., Cheonan, Korea
- 5 CCTech. Co. Ltd, Hwaseong, Korea
- 6 School of Material Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea
Materials Sciences and Applications·Volume 10 (2019)·Pages 687–696·Published 29 October 2019·DOI10.4236/msa.2019.1011049
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Abstract
The fabrication of black pixel define layer (PDL) on the organic light emitting diode (OLED) panel has been developed actively by using negative-tone black photoresist which contain photoinitiator, photosensitizer, binder polymer, multifunctional monomer and black mill base in order to improve the outdoor visibility of OLEDs. Cardo type binder polymer containing bulky and rigid fluorene group has been widely used in the black photoresist formulation. However, the commercial cardo binder polymer has high cost and requires high UV dose for the fine patterning of PDL in the photolithographic process. In this study we designed and synthesized various non-cardo type binder polymers and evaluated the new binder polymers in comparison with the cardo binder polymer for the improved patterning of PDL on the OLED panel.
KeywordsOrganic Light Emitting DiodePixel Define LayerPhotolithographyOne-Pot Synthesis
- Grover, R., Srivastava, R., Rana, O., Mehta, D.S. and Kamalasanan, M.N. (2011) New Organic Thin-Film Encapsulation for Organic Light Emitting Diodes. Journal of Encapsulation and Adsorption Sciences, 1, 23-28. https://doi.org/10.4236/jeas.2011.12003
- Cosimbescu, L., Wang, L., Helm, M.L., Polikarpov, E., Swensen, J.S. and Padmaperuma, A.B. (2012) Electron Transport Materials: Synthesis, Properties and Device Performance. International Journal of Organic Chemistry, 2, 101-110. https://doi.org/10.4236/ijoc.2012.22016
- Liu, W., Jiang, C., Wang, D. and Li, Y. (2016) Organic Light-Emitting Diode (OLED) Display Panel, Pixel Define Layer (PDL) and Preparation Method Thereof. U.S. Patent 9373814-B2.
- Noda, M., Kobayashi, N., Katsuhara, M., Yumoto, A., Ushikura, S.I., Yasuda, R.I., Hirai. N., Yukawa, G., Yagi, I. and Nomoto, K. (2010) 47.3: A Rollable AM-OLED Display Driven by OTFTs. SID Symposium Digest of Technical Papers, 10, 710-713. https://doi.org/10.1889/1.3500568
- Woo, S., Kim, D.-H., Han, Y.S. and Choi, B.-D. (2011) Full-Color LCD Microdisplay System Based on OLED Backlight Unit and Field-Sequential Color Driving Method. International Journal of Photoenergy, 2011, Article ID: 602914. https://doi.org/10.1155/2011/602914
- Hsieh, C.-C. and Li, Y.-H. (2013) Optical Microstructure Design Optimization for Display Backlighting. Modern Mechanical Engineering, 3, 202-207. https://doi.org/10.4236/mme.2013.34027
- Defranco, J.A., Schmidt, B.S., Lipson, M. and Malliaras, G.G. (2006) Photolithographic Patterning of Organic Electronic Materials. Organic Electronics, 7, 22-28. https://doi.org/10.1016/j.orgel.2005.10.002
- Cok, R.S. and Arnold, A.D. (2007) P-155: Ambient Contrast for OLED Displays. SID Symposium Digest of Technical Papers, 7, 784-787. https://doi.org/10.1889/1.2785423
- Jang, S., Yoo, K.Y., Ahn, J. and Oh, C. (2019) 26-4: Late-News Paper: Development of Positive-Type Photoresists Based on Polyorganosilsesquioxanes for the Pixel Defining Layer (PDL) in OLED Structures. SID Symposium Digest of Technical Papers, 38, 367-370. https://doi.org/10.1002/sdtp.12933
- Shi, G., Park, J.W. and Park, L.S. (2018) Black Photoresist for Patterning Pixel Define Layer of Organic Light Emitting Diode with Polyimide as Thermal Stabilizer. Materials Sciences and Applications, 9, 554-564. https://doi.org/10.4236/msa.2018.96040
- Shi, G., Park, S.H., Kim, J., Kim, M. and Park, L.S. (2018) Side-Chain Polyimides as Binder Polymers for Photolithographic Patterning of a Black Pixel Define Layer for Organic Light Emitting Diode. International Journal of Polymer Science, 2018, Article ID: 3790834. https://doi.org/10.1155/2018/3790834