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Optica Publishing Group
  • Journal of Display Technology
  • Vol. 3,
  • Issue 4,
  • pp. 386-391
  • (2007)

The Latest Plasma-Enhanced Chemical-Vapor Deposition Technology for Large-Size Processing

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Abstract

The thin-film transistor liquid crystal display (TFT-LCD) industry has in recent years demanded ever-larger-area substrate processing capability to keep up with consumer market demands for larger and larger displays. This paper discusses the latest plasma-enhanced chemical-vapor deposition (PECVD) system, the AKT 50K PECVD, which handles up to ${\hbox{2160}}\times {\hbox{2460}}\ {\hbox {mm}}^{2}$ substrates. As substrate size increases, lowering the processing temperature is getting even more important to improve production reliability and cost performance. The most commonly used process temperature for the so-called active layers of amorphous silicon (a-Si) TFTs is approximately 350 $^{\circ} {\hbox {C}}$. In this paper, a newly developed single-chamber low-temperature PECVD active-layers process is discussed. In particular, our low-temperature process maintains film performance at the same level as high-temperature active layers while also maintaining system productivity and throughput.

© 2007 IEEE

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