Process TAC Time Reduction Technology for Improving the Efficiency and Throughput of the PDP

PDP 효율 및 생산성 향상을 위한 공정단순화 기술

  • Kwon, Sang Jik (Department of Electronics Engineering, Gachon University)
  • Received : 2013.05.23
  • Accepted : 2013.06.17
  • Published : 2013.06.30

Abstract

This paper focuses on the fundamental issues for improving the efficiency and throughput of the AC PDP (Plasma Display Panel) manufacturing. The properties of the MgO protective layer affect the PDP efficiency. Especially, the secondary electron emission efficiency was affected on the deposition rate of MgO during the evaporation. In this study, the deposition rate of 5 $\AA$/s has given the maximum efficiency value of 0.05 It is demonstrated that the impurity gases such as $H_2O$, $CO_2$, CO or $N_2$, and $O_2$ can be remained inside the PDP panel before sealing and the amount of the impurity gases decreased rapidly as the base vacuum level increased, especially near $10^{-5}$ torr. The fundamental solution in order to overcome these problems is the vacuum in-line sealing process from the MgO evaporation to the final sealing of the panel without breaking the vacuum. We have demonstrated this fundamental process technology and shown the feasibility. The firing voltage was reduced down to 285 V at the base vacuum value of $10^{-6}$ torr, whreras it was about 328 V at the base vacuum value of $10^{-3}$ torr.

Keywords

References

  1. S. J. Kwon, and C. K. Jang, "Dependence of the Discharge Characteristics and Efficacy on the Base Vacuum Level for a High-Efficiency PDP", J. of the Korean Physical Society, Vol. 47, No.24, pp. 371-374, 2005.
  2. H. W. Choi, Y. J. Kim, and S. J.Kwon, "Dependence of the Material Properties and PDP Discharging Characteristics on the MgO Evaporation Rate", J. of the Korean Physical Society, Vol. 49, No.4, pp.1465-1469, 2006.
  3. G. Oversluizen, S. Zwart, M. F. Gillies, T. Dekker, and T. J. Vink, "The route towards a high efficacy PDP; influence of Xe partial pressure, protective layer, and phosphor saturation", Microelectronics J. 35, pp. 319- 324, 2004. https://doi.org/10.1016/S0026-2692(03)00237-4
  4. S. K. Lee,J. H. Kim, J. Lee, K. W. Whang, "Secondary electron ejection from the MgO protection layer in AC plasma display panels for low-energy noble ions", Thin Solid Films 435, 69-71, 2003. https://doi.org/10.1016/S0040-6090(03)00372-9
  5. Z. H. Li, and S. J. Kwon, "A study on the driving discharge characteristics of the AC PDP packaged with in-situ vacuum sealing with the MgO layer coated by optimum evaporation rate", Thin Solid Films, 517, 4082-4085, 2009. https://doi.org/10.1016/j.tsf.2009.01.178
  6. S. J. Kwon, and C. K. Jang, "Effect of Base Vacuum Level on Plasma Display Panel Discharge Characteristics and Efficacy" Vol. 45, No. 2A, 2006, pp. 804-809, 2006. https://doi.org/10.1143/JJAP.45.804
  7. S. H. Son, Y. S. Park, S. C. Bae, S. Y. Choi, and S. J. Park, "New Formation Technology of PDP Barrier- Rib Structures Using UV-LIGA and Roll-Pressing Processes", J. of the Korean Physical Society, Vol. 40, No. 1, pp. 30-33, 2002.
  8. S. J. Kwon, and J. H. Kim, "A Low-Temperature Vacuum In-Line Sealing Technology for a High- Performance Plasma Display Panel", J. of the Korean Physical Society, Vol. 45, No. 4, pp. 1109-1113, 2004.