Hostname: page-component-848d4c4894-wzw2p Total loading time: 0 Render date: 2024-06-08T13:00:02.502Z Has data issue: false hasContentIssue false
  • English
  • Français

Laser-Deposition Of High Luminance Thin Film Phosphors

Published online by Cambridge University Press:  15 February 2011

J. A. Greer ,
H. J. Van Hook ,
M. D. Tabat ,
H. Q. Nguyen ,
G. Gammie  and
P. F. Koufopoulos
J. A. Greer
Affiliation:
Research Division, Raytheon Company, Lexington, MA
H. J. Van Hook
Affiliation:
Research Division, Raytheon Company, Lexington, MA
M. D. Tabat
Affiliation:
Research Division, Raytheon Company, Lexington, MA
H. Q. Nguyen
Affiliation:
Research Division, Raytheon Company, Lexington, MA
G. Gammie
Affiliation:
Research Division, Raytheon Company, Lexington, MA
P. F. Koufopoulos
Affiliation:
Missile Systems Division, Raytheon Company, Quincy, MA
Get access

Abstract

High luminance (brightness) thin-film phosphor materials have potential use in a variety of applications including heads-up, helmet-mounted, and electroluminescent displays, as well as in emerging flat-panel displays based on field emitter technology. Phosphor materials in thin film form offer several advantages over conventional powder phosphor screens. Since the film is nearly fully dense and in intimate contact with the underlying substrate, thin film phosphors transfer heat to the face plate much quicker than conventional, more porous, powder phosphor materials. This allows thin film phosphor screens to be driven at higher power levels, and therefore produce higher luminance, assuming the efficiency of the powder and film are the same. Fully dense phosphor films have smaller surface area, and will outgas less than conventional powder phosphor materials. Thin film phosphors have smaller grain sizes than conventional powder phosphor materials which will provide for smaller spot size, and thus, higher resolution. Furthermore, in applications such as field-emitter displays, powder phosphor particles can be physically dislodged from the screen due to the high electric fields produced by the large potential difference between the anode screen and gate electrode (or cathode), or dislodged by arcing which may occur if a powder particle protrudes significantly above the screen surface. Dislodged particles or damage produced by arcing could degrade display performance. Dense, thin-film phosphor materials which are well adhered to transparent substrates will provide much smoother surface morphologies, and should be able to withstand significantly higher electric field strength without arcing or screen degradation due to the dislocation of particles.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 345: Symposium M – Flat Panel Display Materials , 1994 , 281
Copyright
Copyright © Materials Research Society 1994

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1) Shmulovich, J. and Kocian, D. F., Proceedings of SID, Vol.30/4, pps. 297–302, 1989.Google Scholar
2) Robertson, J. M. and Tol, M. W. van, Thin Solid Films, Vol.14, pp. 221, (1984).Google Scholar
3) McLauglin, M., Sakeek, H. F., Maguire, P., Grahm, W. G., Molloy, J., Morrow, T., Laverty, S., and Anderson, J., Appl. Phys. Lett., Vol.63 (14), pps. 1865–1867, 1993.Google Scholar
4) Greer, J. A., J. Vac. Sci. Technol., Vol.A 10(4), pps. 1821–1826, 1992.Google Scholar
5) “Pulsed Laser Deposition of Thin-films”, Ed. by Chrisey, D. B. and Hubler, G. K., John Wiley and Son, In press.Google Scholar
6) Greer, J. A. and Hook, H. J. Van, Mat. Res. Soc. Symp. Proc., Vol.191, pps. 171–176, 1990.Google Scholar
7) To be published in Proc. of SID, San Jose CA., June 1994.Google Scholar