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AMOLED Display Technologies and Recent Trends - Focusing on Flexible Display Technology -

AMOLED 디스플레이 주요 기술 및 최근 동향 - 플렉서블 디스플레이 기술 위주로 -

  • Kim, Kyoung-Bo (Department of Materials Science & Engineering, Inha Technical College) ;
  • Lee, Jongpil (Department of Electrical and Electronic Engineering, Jungwon University) ;
  • Kim, Moojin (Department of Electronic Engineering, Kangnam University)
  • 김경보 (인하공업전문대학 금속재료과) ;
  • 이종필 (중원대학교 전기전자공학과) ;
  • 김무진 (강남대학교 전자공학과)
  • Received : 2022.08.21
  • Accepted : 2022.09.13
  • Published : 2022.09.30

Abstract

Starting with cathode ray tubes, displays are forming markets in the order of active marix organic light emitting diode (AMOLED) after PDP (Plasma Display Panel) and LCD (Liquid Crystal Display). OLED is recognized as a key field for the development of each country preparing for the fourth industrial revolution, and especially Samsung Display and LG Display, which are the top industries in Korea, are leading the market with more than 90% of OLED shares. Currently, AMOLED has moved to the area that can be folded or bent. This technology is possible because TFT (Thin Film Transistor) and OLED may be formed on a flexible substrate. In the future, the technology will move to stretchable displays, and for this, the development of substrate materials is first, and then TFT and OLED devices should also be implemented with stretchable materials.

디스플레이는 브라운관을 시작으로 PDP(Plasma Display Panel), LCD(Liquid Crystal Display) 이후 AMOLED(Active Marix Organic Light Emitting Diode) 순으로 시장을 형성하고 있다. 유기발광다이오드 OLED는 4차 산업혁명을 준비하는 각 국가들의 발전을 위한 핵심 분야로 인정받고 있는 기술이며, 특히 국내 최고업계 삼성 디스플레이, LG디스플레이는 OLED의 90%이상의 점유율로 시장을 주도하고 있다. 현재 AMOLED는 접거나 휠 수 있는 영역으로 옮겨왔으며, 이와 같은 기술이 가능한 이유는 플렉서블 기판상에 TFT(Thin Film Transistor)와 OLED가 형성가능하기 때문이다. 향후 스트레처블 디스플레이로 그 기술은 이동할 것이며, 이를 위해서는 늘어나는 기판 소재 개발이 우선 진행되고, 다음으로 TFT, OLED 소자 역시 늘어날 수 있는 재료로 구현되어야 할 것이다.

Keywords

Acknowledgement

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2021R1F1A1046135).

References

  1. Kim, K. B., Lee, J. P., Kim, M. J. & Min, Y. S. (2019). Characteristics of Excimer Laser-Annealed Polycrystalline Silicon on Polymer layers. Journal of Convergence for Information Technology, 9(3), 75-81. DOI : 10.22156/CS4SMB.2019.9.3.075
  2. Kim, M. J., & Jin, G. H. (2009). ITO/AlNdN/Al contact process for active matrix OLED displays. Electronics Letters, 45(8), 421-423. DOI : 10.1049/el.2009.0037
  3. Diethelm, M., Penninck, L., Altazin, S., Hiestand, R., Kirsch, C., & Ruhstaller, B. (2018). Quantitative analysis of pixel crosstalk in AMOLED displays. Journal of Information Display, 19(2), 61-69. DOI : 10.1080/15980316.2018.1428232
  4. Rjoub, A., Tarawneh, B. & Alghsoon, R. (2019). Active matrix organic light emitting diode displays (AMOLED) new pixel design. Microelectronic Engineering, 212, 42-52. DOI : 10.1016/j.mee.2019.04.001
  5. Bender, V. C., Barth, N. D., Mendes, F. B., Pinto, R. A., Alonso, J. M. & Marchesan, T. B. (2018). A Hardware Emulator for OLED Panels Applied to Lighting Systems. IEEE Journal of Emerging and Selected Topics in Power Electronics, 6(3), 1252-1258. DOI : 10.1109/JESTPE.2018.2842157
  6. Kang, T. K., Liao, T. C., & Yang, Y. Y. (2012). Self-Heating and Kink Effects in SLS Single-Crystal-Like Nanowire Transistors. IEEE Transactions on Electron Devices, 59(10), 2787-2794. DOI : 10.1109/TED.2012.2210045
  7. Liao, C. Y., Chen, S. H., Huang, W. H., Shen, C. H., Shieh, J. M., & Cheng, H. C. (2018). High-Performance Recessed-Channel Germanium Thin-Film Transistors via Excimer Laser Crystallization. IEEE Electron Device Letters, 39(3), 367-370. DOI : 10.1109/LED.2018.2791506
  8. Kim, K. B., Lee, J. P., Kim, M. J., & Min, Y. S. (2019). Trend of Crystallization Technology and Large Scale Research for Fabricating Thin Film Transistors of AMOLED Displays. Journal of Convergence for Information Technology, 9(5), 117-124. DOI : 10.22156/CS4SMB.2019.9.5.117
  9. Kim, L. J., Jung, S. J., Kim, H. J., Kim, B. H., Kwon, K. J., Ha, Y. M., & Kim, H. J. (2022). Image quality enhancement in variable-refresh-rate AMOLED displays using a variable initial voltage compensation scheme. Scientific Reports, 12, 5977. DOI : 10.1038/s41598-022-09892-5
  10. Takeuchi, K., Fujino, M., Matsumoto, Y., & Suga, T. (2018). Room temperature bonding and debonding of polyimide film and glass substrate based on surface activate bonding method. Japanese Journal of Applied Physics, 57(2S1), 02BB05. DOI : 10.7567/JJAP.57.02BB05
  11. Gao, X., Lin, L., Liu, Y. & Huang, X. (2015). LTPS TFT Process on Polyimide Substrate for Flexible AMOLED. Journal of Display Technology, 11(8), 666-669. DOI : 10.1109/JDT.2015.2419656
  12. Pecora, A., Maiolo, L., Cuscuna, M., Simeone, D., Minotti, A., Mariucci, L., & Fortunato, G. (2008). Low-temperature polysilicon thin film transistors on polyimide substrates for electronics on plastic. Solid-State Electronics, 52(3), 348-352. DOI : 10.1016/j.sse.2007.10.041
  13. Jin, G. H., Cho, J. H., Lee, W. P., Mo, Y. G., Kim, H. D., Kim, S. S., Kim, M. J., & Song, J. H. (2011). Simple Fabrication of a Three-Dimensional CMOS Inverter Using p-Type Poly-Si and n-Type Amorphous Ga-In-Zn-O Thin-Film Transistors. IEEE Electron Device Letters, 32(9), 1236-1238. DOI : 10.1109/LED.2011.2161258